CN112407832B

CN112407832B - High-efficient intelligent sludge purification treatment production line

Info

Publication number: CN112407832B
Application number: CN202010713719.5A
Authority: CN
Inventors: 黄俊超; 史熙; 黄美华; 徐华进; 胡伟峰; 王春香; 申文平
Original assignee: Jiangsu Hualiang Machinery Co ltd
Current assignee: Jiangsu Hualiang Machinery Co ltd
Priority date: 2020-07-22
Filing date: 2020-07-22
Publication date: 2024-09-27
Anticipated expiration: 2040-07-22
Also published as: CN112407832A

Abstract

The invention discloses a high-efficiency intelligent sludge purification treatment production line, which comprises sludge drying equipment consisting of a dryer unit and a heat pump unit, a water filtering conveyor consisting of a water filtering conveyor shell comprising a plurality of fixed ring sheets and movable ring sheets which are arranged alternately, a coaxial double-auger temperature control conveyor which uses the heat pump unit as a heat source for carrying out material heating conveying, a mixer, sludge drying equipment, a distributing conveyor, a scraper conveyor with a cleaning scraper, a dry sludge bin and a temperature control screw conveyor which uses condensed water discharged by the heat pump unit for cooling are sequentially arranged, so that the sludge drying conveying production line from water-containing sludge water filtering to final drying sludge cooling output is formed.

Description

High-efficient intelligent sludge purification treatment production line

Technical Field

The invention relates to a drying conveying device, in particular to a sludge drying treatment conveying line.

Background

The sludge drying treatment is an environment-friendly and renewable sludge treatment mode, can be used as raw materials of building materials such as cement, glass ceramic and the like or used as auxiliary fuel for recycling after being dried, and is an advanced technology for replacing the traditional landfill, incineration and other treatment modes. The sludge drying treatment system is composed of sludge drying treatment equipment as a main body, and a previous sludge water filtering equipment, a conveying and feeding equipment and a subsequent conveying equipment.

In the sludge drying equipment, the heat pump is utilized to dehumidify and dry the sludge material, the energy saving and environment protection advantages are achieved, in the working process, the wet sludge material is operated in a closed dryer housing by a mesh chain conveyor, the heat pump unit provides dry hot air which passes through a conveying mesh chain to evaporate moisture in the sludge material on the conveying mesh chain, the temperature of the dry hot air is reduced and the humidity is increased after the dry hot air absorbs the moisture in the sludge material, the dry hot air enters the heat pump unit through a return air channel, the temperature is reduced and dehumidified through an evaporator in the heat pump unit to become dry air, a refrigerating medium in the heat pump unit absorbs heat in return air and is compressed by a compressor to be heated to become dry hot air after flowing through the condenser, and the dry hot air is conveyed into the dryer again by a fan to continuously dry the sludge material. Like this, the air medium that carries out the stoving to moist material is circulated the use always, can not produce the emission of waste gas, and the heat pump passes through the refrigerant and realizes the transfer of heat, and energy-conserving effect is obvious, and overall operation expense also greatly reduced. Since the hot air as a drying medium needs to pass through the conveying net chain to be in contact with the sludge material for drying, the meshes of the conveying net chain are required to be unobstructed, but for materials such as sludge, the meshes of the conveying net chain are extremely easy to be blocked, and the drying efficiency is reduced.

For sludge with extremely high water content, the drying treatment must be performed by filtering water before the sludge enters the drying treatment equipment, and filtering water in the sludge by using the filtering equipment is a common mode, but when the filtering equipment is used for filtering water, a filter screen is extremely easy to be blocked, cleaning is troublesome, and the water filtering and conveying are performed step by step, which inevitably results in low efficiency.

The sludge output from the water filtering equipment needs to be conveyed to the sludge drying equipment, in order to ensure the drying efficiency of the sludge drying equipment, the sludge material entering the drying equipment needs to have certain looseness, the water content of the sludge conveyed from the water filtering equipment is relatively high, and cannot reach a looseness state, the general solution is that a part of the dried sludge is taken out and stirred with the filtered sludge, the total water content of the stirred sludge material is reduced, the looseness is improved, and the efficient drying of the sludge drying equipment can be facilitated.

After sludge drying treatment, the sludge is required to be conveyed to a dry sludge bin, a scraper conveyor is usually adopted in the conveying process, long-distance airtight conveying can be guaranteed, the scraper conveyor is usually used for conveying loose granular materials, gaps are reserved between conveying scrapers on a scraper chain and the side wall of a trough, so that the conveying scrapers and the side wall of the trough are prevented from being rubbed, the gaps are reserved, the conveying of the loose granular materials is not affected, but if the sludge is used for conveying materials with viscosity such as sludge, the materials are often adhered to the inner wall of the trough, great resistance is brought to the operation of the scraper chain, and the conveying efficiency of the scraper conveyor is also affected.

The dried sludge entering the dried sludge bin is required to be conveyed to a dried sludge using place, and as the dried sludge discharged from the sludge drying equipment enters the dried sludge bin in a sealing way through the scraper conveyor, the temperature of the dried sludge is always kept higher, when the dried sludge is output from the dried sludge bin to a sludge using place, the higher temperature of the dried sludge cannot meet the using requirement, the dried sludge is often required to be subjected to cooling treatment, and the common conveying equipment cannot meet the cooling requirement, so that certain energy is consumed or a proper place or equipment is required.

Disclosure of Invention

Aiming at the defects existing in the prior art, the invention aims to provide an efficient intelligent sludge purification treatment production line. The device can keep clear meshes of a conveying net chain in the sludge drying equipment, can realize a water filtering function in the conveying process of the water filtering conveyor, can avoid blockage in the water filtering process, can effectively control the temperature of each conveyed material when the feeding conveying equipment of the sludge drying equipment conveys different materials, can timely clean adherents on the side wall of a trough by a scraper conveyor after the sludge drying equipment discharges, and can control the temperature of the finally output dry sludge; meanwhile, the whole drying treatment conveying line has obvious energy-saving effect and high production efficiency.

In order to solve the technical problems, the high-efficiency intelligent sludge purification treatment production line comprises sludge drying equipment, wherein the sludge drying equipment comprises a heat pump unit and a drying unit communicated with the heat pump unit, at least three groups of net chain conveyors are arranged in the drying unit, the net chain conveyors are staggered up and down at intervals, the conveying directions of adjacent net chain conveyors are opposite, a drying feed inlet of the drying unit corresponds to a feed end of an uppermost net chain conveyor, and a drying discharge outlet of the drying unit corresponds to a discharge end of a lowermost net chain conveyor; a cleaning roller is rotatably supported on the net chain conveyor, the cleaning roller is positioned at the inner side of the discharge end of the net chain conveyor, a plurality of cleaning convex columns are arranged on the surface of the cleaning roller, the cleaning convex columns are inserted into corresponding meshes on a conveying net chain in the net chain conveyor, and the cleaning roller is driven to rotate by the conveying net chain through the meshes and the cleaning convex columns; a hot air input hopper is arranged below a drying shell of the drying unit and is communicated with a hot air output port of the heat pump unit, a return air collecting hopper is arranged above the drying shell of the drying unit and is communicated with a return air suction port of the heat pump unit, and an opening of the hot air input hopper and an opening of the return air collecting hopper are opposite to the net chain conveyor; the heat pump unit comprises a heat pump unit shell, an evaporator, a compressor, an expansion valve, a condenser and a fan, wherein the evaporator, the compressor, the expansion valve and the condenser form a refrigerant working loop, a condensate water tank is arranged below the evaporator, the return air suction inlet is arranged on the heat pump unit shell and opposite to the evaporator, the fan is adjacent to the condenser, and the hot air outlet is arranged on the heat pump unit shell and communicated with a fan air outlet; a return air auxiliary suction inlet and a hot air auxiliary output port are also arranged on the heat pump unit shell of the heat pump unit, and a condensed water outlet communicated with the condensed water tank is also arranged on the heat pump unit shell of the heat pump unit;

The drying feed inlet is communicated with a mixing feed outlet of the mixer, the mixer is provided with two mixing feed inlets, and the two mixing feed inlets are respectively communicated with an outer auger discharge outlet and an inner auger discharge outlet on the coaxial double auger temperature control conveyor; the drying discharge port is communicated with the feed port of the distributing conveyor, one discharge port of the distributing conveyor is communicated with the feed port of the outer auger of the coaxial double auger temperature control conveyor, and the other discharge port of the distributing conveyor is communicated with the feed port of the scraper conveyor;

The coaxial double-auger temperature-control conveyor comprises an auger shell fixedly connected to a machine base, an outer auger is arranged in the auger shell, outer auger blades of the outer auger are arranged on the periphery of an auger cylinder body, outer auger end covers are arranged at two ends of the auger shell, the auger cylinder body is movably inserted in the outer auger end covers in a sealing manner, an outer auger feed port and an outer auger discharge port are respectively arranged at two ends of the auger Long Jike, an inner auger is also arranged in the auger cylinder body, two ends of the auger cylinder body are movably connected with the inner auger end covers, the inner auger end covers are fixedly connected to the machine base, an inner auger feed port and an inner auger discharge port are respectively arranged on the peripheral side walls of the two inner auger end covers, an inner auger shaft of the inner auger is rotatably supported on the inner auger end covers, the outer auger and the inner auger are respectively in transmission connection with a corresponding driving device, the outer auger blades are of hollow structures, outer auger blade end covers are arranged at two ends of the outer auger blades of the hollow structures, outer auger communicating holes communicated with outer blade hollow cavities of the outer auger blades are arranged on the outer auger blade end covers, the outer auger blade end covers are in sealing movable connection with outer auger end covers at corresponding ends of the augers Long Jike, outer auger liquid through cavities are formed between the outer auger blade end covers and the outer auger end covers at corresponding ends of the augers Long Jike, outer auger liquid through joints are arranged on the outer auger end covers, and the outer auger liquid through joints are communicated with the outer auger liquid through cavities; the inner auger blade on the inner auger is of a hollow structure, inner auger blade end covers are arranged at two ends of the inner auger blade of the hollow structure, inner auger communication holes communicated with the inner blade hollow cavity of the inner auger blade are formed in the inner auger blade end covers, the inner auger blade end covers are in sealing movable connection with the inner auger end covers at the corresponding ends of the auger cylinder, an inner auger liquid through cavity is formed between the inner auger blade end covers and the inner auger end covers at the corresponding ends of the auger cylinder, and inner auger liquid through joints are arranged on the inner auger end covers and are communicated with the inner auger liquid through cavity; the outer auger liquid-passing connector and the inner auger liquid-passing connector at the discharge end are communicated with a hot air auxiliary output port of the heat pump unit, and the outer auger liquid-passing connector and the inner auger liquid-passing connector at the feed end are communicated with a return air auxiliary suction port of the heat pump unit; the feeding port of the inner auger is communicated with the discharging hopper of the drainage conveyor;

The water filtering conveyor comprises a feed hopper, the feed hopper is arranged on a water filtering conveyor shell, the water filtering conveyor shell comprises a feeding fixed ring piece for arranging the feed hopper and a discharging fixed ring piece positioned at an output end, a plurality of fixed ring pieces and movable ring pieces are alternately arranged between the feeding fixed ring piece and the discharging fixed ring piece, the inner side surface of the feeding fixed ring piece, the inner side surface of the discharging fixed ring piece and the two side surfaces of the fixed ring piece are attached to the side surfaces of the opposite movable ring pieces, the feeding fixed ring piece, the discharging fixed ring piece and the fixed ring pieces are connected through connecting rods, the movable ring piece is connected with a movable ring piece driving device, and the inner hole shape of the movable ring piece corresponds to that of the fixed ring piece; the feeding fixed ring piece, the discharging fixed ring piece and the inner holes of the fixed ring pieces form a working cavity of the drainage conveyor shell, a conveying pressing plate is arranged in the working cavity, the shape of the conveying pressing plate corresponds to the shape of the working cavity, and the conveying pressing plate is driven by a conveying driving device to reciprocate; a discharge end cover is hinged on the discharge fixed ring piece and is tightly attached to the outer side of the discharge fixed ring piece through an elastic device; the feeding fixed ring piece and the discharging fixed ring piece are fixedly connected to the water filtering conveying frame, a water collecting bucket is arranged on the water filtering conveying frame, an opening of the water collecting bucket faces to the lower part of the water filtering conveying shell, and the water collecting bucket is communicated with the water conveying pipe; the discharging hopper is arranged below the discharging fixed ring piece;

The scraper conveyor comprises a trough and a scraper chain, wherein conveying scrapers are arranged on the left side and the right side of the scraper chain, cleaning scrapers are arranged at the overhanging ends of the conveying scrapers on the scraper chain, the cleaning scrapers are hinged on cleaning scraper connecting seats, the cleaning scraper connecting seats are connected with the conveying scrapers, the overhanging direction of the cleaning scrapers is the advancing direction of the scraper chain, springs are arranged between the cleaning scrapers and the cleaning scraper connecting seats, and the overhanging ends of the cleaning scrapers are attached to the side walls of the trough through the springs; the discharge port of the scraper conveyor is communicated with the dry mud bin;

The utility model provides a dry mud feed bin, including the casing, control temperature screw conveyer includes casing and conveying screw, conveying screw includes screw axis and sets up at epaxial helical blade of screw, and this helical blade is hollow structure, and hollow structure's helical blade both ends are provided with the blade end cover, be equipped with the intercommunicating pore that communicates with helical blade's cavity spiral chamber on the blade end cover, the sealed swing joint of casing end cover and casing corresponding end forms logical liquid chamber between the casing of blade end cover and casing corresponding end, is equipped with logical liquid joint on the casing end cover, should lead to liquid joint and lead to liquid chamber to be linked together, and the logical liquid joint that is located control temperature screw conveyer discharge end is linked together with the comdenstion water outlet on the heat pump set.

By adopting the structure, the sludge to be dried on the upper-layer mesh chain conveyor in the drying unit in the sludge drying equipment is conveyed to the discharge end and then falls into the feed end of the adjacent lower-layer mesh chain conveyor, the sludge to be dried entering the drying unit is sequentially conveyed by the mesh chain conveyors and then is output from the drying discharge port of the drying unit, in the process, the drying hot air entering the drying unit from the heat pump unit is used for drying the sludge in drying on the mesh chain conveyors, the sludge in drying on the upper-layer mesh chain conveyor falls into the feed end of the adjacent lower-layer mesh chain conveyor from the discharge end, the sludge in drying automatically generates primary stirring and scattering, the sludge in drying after scattering is more beneficial to the infiltration of the drying, the drying process is easier to realize, the operation of stirring and scattering is performed more times when one group is added to at least three groups of mesh chain conveyors, and the drying efficiency is higher. The cleaning convex columns on the cleaning roller are inserted into the meshes of the conveying net chain, the sludge embedded into the meshes is ejected, the meshes are smooth, the cleaning convex columns are stirred by the conveying net chain in operation to generate a meshing effect similar to that of a gear rack, the cleaning roller can continuously rotate, the cleaning convex columns on the cleaning roller are also sequentially inserted into the corresponding meshes of the conveying net chain, all the meshes are cleaned, the cleaning process is not required to be driven by additional power, the cleaning process is continuously performed as long as the conveying net chain is in operation, each mesh can be cleaned once after the conveying net chain is in operation for each circle, the cleaning effect is obvious, the efficiency is high, the smoothness of the meshes of the conveying net chain is ensured, the ventilation property of the net chain conveyor is ensured to be good, the contact area between hot air and materials is increased, and the heat exchange efficiency is high. The heat pump unit in the sludge drying equipment can enable the moisture-containing air recovered from the interior of the drying unit to timely obtain dehumidification and drying through the evaporator, the moisture-containing air is heated through the condenser and timely conveyed into the drying unit by the fan, the fan provides circulating operation power for the air serving as a drying medium, the condensed water tank can collect all the moisture condensed from the moisture-containing air, the whole layout is reasonable, the sludge drying equipment adopts a closed treatment mode, external energy sources (steam, heat conducting oil and hot air) are not required to be introduced, no waste gas is discharged, no tail gas treatment system is required, no waste heat is discharged, the energy is fully utilized, the energy consumption is the power consumption input by the compressor, and the energy saving effect is obvious.

In the adopted coaxial double-auger temperature-control conveyor, an outer auger liquid-passing joint and an inner auger liquid-passing joint which are positioned at a discharge end are communicated with a hot air auxiliary outlet of a heat pump unit, and an outer auger liquid-passing joint and an inner auger liquid-passing joint which are positioned at a feed end are communicated with a return air auxiliary inlet of the heat pump unit, so that hot wind energy generated in the heat pump unit circulates through an outer blade hollow cavity of an outer auger blade and an inner blade hollow cavity of an inner auger blade, hot air can exchange heat with filtered sludge conveyed by the inner auger through the inner auger blade, the temperature of the filtered sludge is increased in the conveying process, and meanwhile, the heat energy is also used for preserving the dried sludge with a certain temperature conveyed by the outer auger through the outer auger blade, so that the filtered sludge and the dried sludge conveyed by the coaxial double-auger temperature-control conveyor can enter sludge drying equipment at a higher temperature, the sludge can be dried rapidly, and the drying efficiency is improved; the heat pump unit provides a heating source for sludge to be dried, and additional heating energy and equipment are not needed.

In the adopted water filtering conveyor, in a water filtering conveyor shell formed by a fixed ring piece, a movable ring piece and a feeding fixed ring piece and a discharging fixed ring piece which are arranged at two ends, the fixed ring piece and the movable ring piece are mutually spaced and attached to form a certain water filtering gap, so that water in the water-containing sludge can pass through the water filtering gap in the conveying process, solid components in the sludge are conveyed to a discharging end from a water filtering conveyor shell and are output from a discharging hopper, the movable ring piece is driven by a movable ring piece driving device to continuously move relative to the fixed ring piece, and solid components in the sludge embedded between the two fixed ring pieces are ejected into an inner hole, so that the water filtering function is realized in the conveying process and the blockage can be avoided; the sludge is conveyed by a conveying pressing plate which reciprocates in the working cavity, and the conveying pressing plate reciprocates once, so that the water filtering conveying of the primary sludge from the feeding end to the discharging end can be completed; the discharge end cover is tightly attached to the discharge fixed ring piece at the discharge end through the elastic device, so that the discharge end cover can be opened after the discharge hole on the discharge fixed ring piece is pushed away by a certain pressure, and the filtered sludge can be output, therefore, in the conveying process, the sludge in the working cavity is continuously extruded under the pushing of the conveying pressing plate, the moisture in the sludge is pushed to flow out from the water filtering gap between the fixed ring piece and the movable ring piece in an accelerating way, the water filtering efficiency in the conveying process is greatly improved, the pressure of the filtered sludge under the pushing of the conveying pressing plate is increased to overcome the pressure of the elastic device, and the discharge end cover is pushed away, so that the sludge is output from the discharge hole of the discharge fixed ring piece, and a good water filtering conveying effect is obtained; the water filtered in the sludge water filtering and conveying process is discharged from the water conveying pipe through the water collecting bucket, so that the cleaning of the conveying environment and the smooth running of the water filtering and conveying process are ensured.

In the adopted scraper conveyor, the cleaning scraper can be arranged on the conveying scraper through the cleaning scraper connecting seat without influencing the original structure of the scraper conveyor, thereby being beneficial to improving the existing scraper conveyor; the cleaning scraping plate keeps being attached to the side wall of the trough under the action of spring force, so that the cleaning scraping plate can thoroughly clean the side wall of the trough, and under the condition that the side wall of the trough is firmly adhered to an adherend, the resistance born by the cleaning scraping plate can enable the cleaning scraping plate to temporarily avoid the elastic force of the spring, and the cleaning scraping plate is cleaned successively by the subsequent cleaning scraping plate, so that the normal operation of the conveyor is ensured; the cleaning work of cleaning scraper blade can be carried out at the in-process of scraper chain operation, need not to join in marriage in addition and clear up power device, and the cleaning work carries out simultaneously in the desiccation mud transportation process and can reduce the possibility of desiccation mud in the adhesion of silo lateral wall, therefore can in time clear up the adhesion thing on the silo lateral wall, guarantee the normal operating of scraper chain.

In the adopted temperature control screw conveyor, a liquid passing joint at the discharge end of the temperature control screw conveyor is communicated with a condensed water outlet on the heat pump unit, so that condensed water generated by dehumidifying and drying the wet air recovered from the drying unit in the heat pump unit can enter a hollow screw cavity in a screw blade of a hollow structure through the liquid passing joint, the condensed water has lower temperature, and the temperature of the dried sludge with higher temperature, which is hermetically conveyed by the temperature control screw conveyor, can be reduced while being conveyed, thereby facilitating the production and processing of the subsequent procedures.

The method is characterized in that the water-containing sludge is fed into a water filtering conveyor through a feed hopper of the water filtering conveyor, the water is filtered by a conveying pressing plate and conveyed to a discharge end, the water enters an inner auger feed port of a coaxial double-auger temperature-control conveyor from a discharge hopper, the outer auger feed port of the coaxial double-auger temperature-control conveyor inputs part of dried sludge output from a discharge port of a distributing conveyor below a drying discharge port, the filtered sludge and part of dried sludge are simultaneously and respectively sealed and heated to the discharge end by the coaxial double-auger temperature-control conveyor according to a certain proportion, and are simultaneously mixed in a mixer, so that the two sludge to be dried are uniformly mixed into relatively loose sludge with proper water content and timely enter a sludge drying device for drying treatment by a heat pump unit, the dried sludge is output from the drying discharge port and enters the distributing conveyor, a small part of the dried sludge is returned to the coaxial double-auger temperature-control conveyor, and most of the dried sludge is conveyed into a dry sludge bin by the scraper conveyor for temporary storage, and is cooled and output by the temperature-control screw conveyor.

The whole drying treatment conveying process can keep meshes of a conveying net chain in the sludge drying equipment smooth, can realize a water filtering function in the conveying process of the water filtering conveyor, can avoid blockage in the water filtering process, can effectively control the temperature of each conveyed material while conveying different materials by the feeding conveying equipment of the sludge drying equipment, can timely clean adherents on the side wall of a trough by a scraper conveyor after discharging of the sludge drying equipment, and can control the temperature of the finally output dry mud; meanwhile, the whole drying treatment conveying line has obvious energy-saving effect and high production efficiency.

According to a preferred embodiment of the invention, the cleaning convex columns on the cleaning roller are uniformly distributed and arranged into a plurality of rows along the circumferential direction, and the distance between two adjacent rows of cleaning convex columns corresponds to the distance between two adjacent rows of meshes along the length direction of the conveying net chain; the number and positions of the cleaning posts in each row of cleaning posts correspond to the number and positions of the meshes in the width direction of the conveyor chain. By adopting the embodiment, each mesh on the conveying net chain can be ensured to be cleaned by the corresponding cleaning convex column.

In another preferred embodiment of the invention, a transition hopper is arranged between the discharge end of the mesh chain conveyor and the feed end of the adjacent mesh chain conveyor below. By adopting the embodiment, the sludge subjected to drying treatment can be conveyed in place more accurately between two adjacent net chain conveyors.

In a further preferred embodiment of the invention, the outer auger blade comprises an outer auger main blade and an outer auger auxiliary blade, the outer periphery of the outer auger main blade is in sealing connection with the outer periphery of the outer auger auxiliary blade, the inner periphery of the outer auger main blade and the inner periphery of the outer auger auxiliary blade are in sealing connection with the auger barrel, and an outer blade hollow cavity is formed among the outer auger main blade, the outer auger auxiliary blade and the auger barrel; the inner auger blade comprises an inner auger main blade and an inner auger auxiliary blade, the outer periphery of the inner auger main blade is connected with the outer periphery of the inner auger auxiliary blade in a sealing way, the inner periphery of the inner auger main blade and the inner periphery of the inner auger auxiliary blade are connected with an inner auger shaft in a sealing way, and an inner blade hollow cavity is formed among the inner auger main blade, the inner auger auxiliary blade and the inner auger shaft. By adopting the embodiment, the hollow structure of the outer auger blade and the hollow structure of the inner auger blade can be formed more conveniently, the structure is simple, and the manufacture is convenient.

In a further preferred embodiment of the invention, an annular groove is arranged on the inner side surface of the outer auger end cover, a convex ring corresponding to the annular groove is arranged on the outer auger blade end cover, sealing oil seals are respectively arranged on an inner hole and an outer circle of the convex ring, and the convex ring is movably spliced in the annular groove in a sealing way through the sealing oil seals; an annular groove is formed in the inner cavity of the inner auger end cover, a convex ring corresponding to the annular groove is arranged on the inner auger blade end cover, sealing oil seals are respectively arranged on the inner hole and the outer circle of the convex ring, and the convex ring is movably inserted into the annular groove in a sealing mode through the sealing oil seals. By adopting the embodiment, the annular groove arranged on the inner side surface of the outer auger end cover can facilitate the formation of the outer auger liquid through cavity and is also convenient for the sealing and movable connection with the outer auger blade end cover through the corresponding convex ring; the annular groove arranged in the inner cavity of the inner auger end cover can be convenient for forming an inner auger liquid through cavity, and is also convenient for being in sealing and movable connection with the inner auger blade end cover through the corresponding convex ring.

In another further preferred embodiment of the invention, four connecting holes are arranged on the peripheries of the inner holes of the feeding fixed ring piece, the discharging fixed ring piece and the fixed ring piece, the diameters of the connecting holes correspond to the diameters of the connecting rods, four waist round holes are arranged on the periphery of the inner hole of the movable ring piece, the positions of the waist round holes correspond to the positions of the connecting holes, the widths of the waist round holes correspond to the diameters of the connecting rods, the length direction of each waist round hole is parallel to the left side and the right side of the movable ring piece, and the connecting rods are inserted into the connecting holes and the waist round holes; the movable ring piece driving device comprises an eccentric shaft, rectangular grooves are formed in the left side edge and the right side edge of the movable ring piece, the eccentric shaft is arranged in the rectangular grooves, two ends of the eccentric shaft are respectively rotatably supported on the feeding fixed ring piece and the discharging fixed ring piece through eccentric shaft supporting seats, and one end of the eccentric shaft is connected with the movable ring piece driving motor. By adopting the embodiment, the feeding fixed ring piece, the discharging fixed ring piece and the fixed ring piece can be well connected into a whole through the four connecting rods with the diameters corresponding to the connecting holes, the fixed ring piece cannot generate radial displacement, the stability of the working cavity is ensured, the movable ring piece can move in a certain range relative to the fixed ring piece along the length direction of the kidney-shaped hole under the limitation of the connecting rods, and the movable ring piece can play a corresponding anti-blocking function; the eccentric shaft can be driven to rotate by the movable ring piece driving motor, so that the movable ring piece is driven to move up and down by the rectangular groove on the movable ring piece, the movable stroke of the movable ring piece is determined by the eccentric distance of the eccentric shaft, the movable ring piece is ensured to continuously move, and the occurrence of blockage is avoided.

In a still further preferred embodiment of the present invention, the conveying driving device includes a screw rod fixedly connected to the conveying pressing plate, a nut matched with the screw rod is rotatably supported on a nut seat, the nut seat is mounted on the filtered water conveying frame, and the nut is in transmission connection with the conveying driving motor. With the adoption of the embodiment, the conveying pressing plate driving device is simple in structure and convenient to manufacture.

In a further preferred embodiment of the present invention, the elastic device includes a torsion spring, the torsion spring is mounted on the discharge fixing ring piece through a torsion spring seat, one end of the torsion spring is adjustably fixed on the torsion spring seat, and the other end of the torsion spring is pressed on the discharge end cover; and a sealing ring is arranged on the inner side surface of the discharge end cover, which is tightly attached to the outer side of the discharge fixing ring piece. By adopting the embodiment, the elastic device has a simple structure, can adapt to the opening and closing of the discharge end cover, can adjust the acting force of the elastic device on the discharge end cover, is convenient to use and adjust, and can prevent materials from seeping out from a gap between the discharge end cover and the discharge fixing ring piece by the sealing ring arranged on the inner side surface of the discharge end cover, so that the pressure in the material conveying process is ensured, and the water filtering function is ensured.

In another still further preferred embodiment of the present invention, the helical blade includes a main blade and an auxiliary blade, the outer periphery of the main blade is in sealing connection with the outer periphery of the auxiliary blade, the inner periphery of the main blade and the inner periphery of the auxiliary blade are in sealing connection with the helical shaft, and a hollow helical cavity is formed among the main blade, the auxiliary blade and the helical shaft. By adopting the embodiment, the hollow structure of the helical blade can be conveniently formed, the structure is simple, and the manufacture is convenient.

In a still further preferred embodiment of the present invention, the inner side surface of the shell end cover is provided with an annular groove, the blade end cover is provided with a convex ring corresponding to the annular groove, the inner hole and the outer circle of the convex ring are respectively provided with a framework oil seal, and the convex ring is movably inserted into the annular groove in a sealing manner through the framework oil seal. By adopting the embodiment, the annular groove arranged on the inner side surface of the shell end cover can be convenient for forming a liquid through cavity and is also convenient for being in sealing and movable connection with the blade end cover through the corresponding convex ring.

Drawings

The efficient intelligent sludge purification treatment production line of the invention is further described in detail below with reference to the accompanying drawings and specific examples.

FIG. 1 is a schematic diagram of a specific embodiment of a high-efficiency intelligent sludge purification treatment line of the present invention;

FIG. 2 is a schematic view of the structure of the drainage conveyor in the structure shown in FIG. 1;

FIG. 3 is a schematic illustration of the structure of the drainage conveyor housing of the structure of FIG. 2;

FIG. 4 is a cross-sectional view of the structure shown in FIG. 3 at the A-A position;

FIG. 5 is an enlarged view of a portion of the structure of FIG. 2 at location I;

FIG. 6 is a schematic view of the structure of the coaxial double-auger temperature-controlled conveyor of FIG. 1;

FIG. 7 is a schematic view of the outer auger blade of the structure of FIG. 6;

FIG. 8 is a schematic view of the structure of the inner auger blade in the structure of FIG. 6;

FIG. 9 is an enlarged view of a portion of the structure of FIG. 6 at location II;

FIG. 10 is a schematic view of the sludge drying apparatus in the structure shown in FIG. 1;

FIG. 11 is an enlarged view of a portion of the structure of FIG. 10 at location III;

FIG. 12 is a top view of FIG. 11;

FIG. 13 is a schematic view of the flight conveyor of the configuration of FIG. 1;

FIG. 14 is a partial view in the B-direction of the portion of the scraper chain and trough in the structure of FIG. 13;

FIG. 15 is a cross-sectional view of the portion C-C of FIG. 14;

FIG. 16 is a schematic view of the temperature controlled screw conveyor of the structure of FIG. 1;

FIG. 17 is a schematic view of the conveyor screw of the structure of FIG. 16;

fig. 18 is an enlarged view of a portion of the IV site in the structure shown in fig. 16.

In the figure: 1-drainage conveyor, 2-coaxial double auger temperature control conveyor, 3-feed divider conveyor, 4-blendor, 5-sludge drying equipment, 6-scraper conveyor, 7-temperature control screw conveyor, 8-dry mud feed bin.

101-Water conveying pipe, 102-screw rod, 103-drainage conveying rack, 104-conveying driving device, 105-nut, 106-conveying driving motor, 107-nut seat, 108-drainage conveying shell, 109-movable ring piece driving device, 110-feed hopper, 111-feeding fixed ring piece, 112-movable ring piece, 113-fixed ring piece, 114-conveying pressing plate, 115-water collecting bucket, 116-discharging fixed ring piece, 117-elastic device, 118-discharging end cover, 119-sealing ring, 120-discharging hopper, 121-movable ring piece driving motor, 122-eccentric shaft supporting seat, 123-eccentric shaft, 124-connecting rod, 125-connecting hole, 126-waist round hole, 127-rectangular groove, 128-torsion spring seat and 129-torsion spring.

201-Engine base, 202-inner auger end cover, 203-inner auger liquid passing joint, 204-inner auger liquid passing cavity, 205-inner auger blade end cover, 206-inner auger communicating hole, 207-inner auger feed inlet, 208-auger cylinder, 209-auger shell, 210-outer auger feed inlet, 211-shell insulation layer, 212-outer auger, 213-outer auger blade, 214-inner auger, 215-inner auger blade, 216-inner auger shaft, 217-outer auger discharge port, 218-outer auger liquid passing joint, 219-outer auger blade end cover, 220-outer auger communicating hole, 221-outer auger liquid passing cavity, 222-outer auger end cover, 223-sealing oil seal, 224-inner auger discharge port, 225-inner vane hollow cavity, 226-inner auger auxiliary blade, 227-inner auger main blade, 228-outer auger blade, 229-outer vane hollow cavity, 230-outer auger main blade.

501-Stoving feed inlet, 502-stoving unit, 503-stoving discharge gate, 504-net chain conveyer, 505-return air collection fill, 506-hot air input fill, 507-wind-guiding division board, 508-cleaning roller, 509-transition hopper, 510-stoving casing, 511-compressor, 512-heat pump unit casing, 513-heat pump unit, 514-hot air delivery outlet, 515-fan, 516-evaporator, 517-hot air auxiliary delivery outlet, 518-condenser, 519-return air suction inlet, 520-condensate tank, 521-return air auxiliary suction inlet, 522-expansion valve, 523-condensate outlet, 524-conveying net chain, 525-mesh, 526-cleaning convex column.

601-Trough, 602-scraper chain, 603-conveying scraper, 604-cleaning scraper connecting seat, 605-spring, 606-isolation cover, 607-cleaning scraper, 608-set screw, 609-connecting clamping groove, 610-cleaning scraper hinged support and 611-hinge pin.

701-Shell end cover, 702-liquid passing joint, 703-communication hole, 704-liquid passing cavity, 705-blade end cover, 706-shell, 707-conveying screw, 708-screw shaft, 709-screw blade, 710-heat preservation layer, 711-skeleton oil seal, 712-main blade, 713-auxiliary blade and 714-hollow screw cavity.

Detailed Description

In the efficient intelligent sludge purification treatment production line shown in fig. 1, a water filtering conveyor 1, a coaxial double-auger temperature control conveyor 2, a mixer 4, a sludge drying device 5, a distributing conveyor 3, a scraper conveyor 6, a dry sludge bin 8 and a temperature control screw conveyor 7 are sequentially connected to form a sludge drying treatment conveying production line from water-containing sludge filtering to final dried sludge output.

Wherein, as shown in fig. 2, the drainage conveyor 1 comprises a feed hopper 110, the feed hopper 110 is arranged on a drainage conveyor shell 108, the drainage conveyor shell 108 comprises a feeding fixed ring piece 111 for arranging the feed hopper 110 and a discharging fixed ring piece 116 positioned at an output end, a plurality of fixed ring pieces 113 and movable ring pieces 112 are arranged between the feeding fixed ring piece 111 and the discharging fixed ring piece 116 at intervals, so that the drainage conveyor shell 108 forms a hollow cylindrical shell member, the fixed ring pieces 113 and the movable ring pieces 112 are rectangular annular sheets, the inner side surface of the feeding fixed ring piece 111, the inner side surface of the discharging fixed ring piece 116 and the two side surfaces of the fixed ring piece 113 are all attached to the side surfaces of the opposite movable ring piece 112, the feeding fixed ring piece 111, the discharging fixed ring piece 116 and each fixed ring piece 113 are connected through connecting rods 124 and nuts at rod ends, the connecting rod 124 may adopt a structure similar to an axial bolt, the middle part of the connecting rod is an optical axis, the length of the optical axis part ensures that the movable ring piece 112 is attached to adjacent components, has a proper water filtering gap, can move freely and is not compressed axially, as a preferred embodiment, four connecting holes 125 are arranged at the peripheries of the inner holes of the feeding fixed ring piece 111, the discharging fixed ring piece 116 and the fixed ring piece 113, the diameter of the connecting holes 125 corresponds to the diameter of the connecting rod 124, four waist round holes 126 are arranged at the periphery of the inner hole of the movable ring piece 112, the positions of the waist round holes 126 correspond to the positions of the connecting holes 125, the width of the waist round holes 126 corresponds to the diameter of the connecting rod 124, the length direction of each waist round hole 126 is parallel to the left side and the right side of the movable ring piece 112, each connecting rod 124 is inserted into the corresponding connecting holes 125 and waist round holes 126, so that the connecting holes 125 and the connecting rod 24 maintain a centering connection state, also allowing movable ring segment 112 to move up and down within the length of kidney-shaped aperture 126; the movable ring piece 112 is connected with the movable ring piece driving device 109, and as a preferred embodiment, the movable ring piece driving device 109 comprises an eccentric shaft 123, rectangular grooves 127 are formed on the left side edge and the right side edge of the movable ring piece 112, the eccentric shaft 123 is installed in the rectangular grooves 127, two ends of the eccentric shaft 123 are respectively rotatably supported on the feeding fixed ring piece 111 and the discharging fixed ring piece 116 through eccentric shaft supporting seats 122, and one end of the eccentric shaft 123 is connected with a movable ring piece driving motor 121.

The feeding fixed ring piece 111, the discharging fixed ring piece 116 and the inner holes of the fixed ring pieces 113 form a working cavity of the water filtering conveyer shell 108, the shape of the inner hole of the movable ring piece 112 corresponds to that of the inner hole of the fixed ring piece 113, and the size is slightly larger, so that the movable ring piece 112 cannot interfere with the conveying pressing plate 114 in the working cavity in the up-down motion process, the conveying pressing plate 114 is arranged in the working cavity, the shape of the conveying pressing plate 114 corresponds to that of the working cavity, the conveying pressing plate 114 is driven by the conveying driving device 104 to reciprocate, the conveying driving device 104 comprises a screw rod 102 fixedly connected with the conveying pressing plate 114, a nut 105 matched with the screw rod 102 is rotatably supported on a nut seat 107, the nut seat 107 is mounted on the water filtering conveyer shell 103, and the nut 105 is in transmission connection with the conveying driving motor 106 through a chain transmission pair or a gear transmission pair or a toothed belt transmission pair and other transmission mechanisms.

A discharge end cover 118 is hinged on the discharge fixed ring piece 116, the discharge end cover 118 is tightly attached to the outer side of the discharge fixed ring piece 116 through an elastic device 117, and referring to fig. 5, the elastic device 117 comprises a torsion spring 129, the torsion spring 129 is arranged on the discharge fixed ring piece 116 through a torsion spring seat 128, one end of the torsion spring 129 is adjustably fixed on the torsion spring seat 128, and the other end of the torsion spring 129 is pressed on the discharge end cover 118; a sealing ring 119 is arranged on the inner side surface of the discharging end cover 118, which is tightly attached to the outer side of the discharging fixing ring piece 116.

The feeding fixing ring piece 111 and the discharging fixing ring piece 116 are fixedly connected to the water filtering conveyer frame 103, so that the water filtering conveyer shell 108 is installed and supported on the water filtering conveyer frame 103, a water collecting bucket 115 is arranged in the water filtering conveyer frame 103, an opening of the water collecting bucket 115 faces to the lower side of the water filtering conveyer shell 108, and the water collecting bucket 115 is communicated with the water conveying pipe 101; a discharge hopper 120 is mounted on the filtered water conveying frame 103, and the discharge hopper 120 is positioned below the discharge fixing ring piece 116.

The coaxial double-auger temperature-control conveyor 2 is shown in fig. 6, and comprises an auger Long Jike 209 fixedly connected to a machine base 201, a machine shell insulation layer 211 is arranged on the periphery of the auger machine shell 209, an outer auger 212 is arranged in the auger machine shell 209, outer auger blades 213 of the outer auger 212 are arranged on the periphery of an auger cylinder 208, outer augers Long Duangai 222 are arranged at two ends of the auger Long Jike 209, the auger cylinder 208 is movably inserted into the outer auger end cover 222 in a sealing mode, an outer auger feed port 210 and an outer auger discharge port 217 are respectively arranged at two ends of the auger Long Jike 209, an inner auger 214 is further arranged in the auger cylinder 208, two ends of the auger cylinder 208 are movably connected with the inner auger end cover 202, inner auger end covers 202 at two ends are fixedly connected to the machine base 201, an inner auger feed port 207 and an inner auger discharge port 224 are respectively arranged on the peripheral side walls of the two inner auger end covers 202, an inner auger shaft 216 of the inner auger 214 is rotatably supported on the inner auger end cover 202, the outer auger 212 is in transmission connection with a driving motor output shaft 216 through a transmission piece fixedly connected to the auger cylinder 208, and the inner auger shaft 216 is correspondingly connected with the inner auger shaft 216 and the outer auger end 214 in a transmission speed-adjusting mode, and the speed is correspondingly controlled to the inner auger end of the auger end 212 is respectively.

Referring to fig. 7 and 9, the outer packing auger blade 213 is of a hollow structure, the outer packing auger blade 213 includes an outer packing auger main blade 230 and an outer packing auger auxiliary blade 228, the outer periphery of the outer packing auger main blade 230 is welded and sealed with the outer periphery of the outer packing auger auxiliary blade 228, the inner periphery of the outer packing auger main blade 230 and the inner periphery of the outer packing auger auxiliary blade 228 are welded and sealed with the packing auger cylinder 208, an outer packing auger hollow cavity 229 is formed among the outer packing auger main blade 230, the outer packing auger auxiliary blade 228 and the packing auger cylinder 208, outer packing auger blade end covers 219 are arranged at two ends of the outer packing auger blade 213 of the hollow structure, an outer packing auger communication hole 220 communicated with the outer packing auger hollow cavity 229 of the outer packing auger blade 213 is arranged on the outer packing auger blade end covers 219, the outer auger blade end cover 219 is in welded sealing connection with the outer auger main blade 230, the outer auger auxiliary blade 228 and the auger barrel 208, the outer auger blade end cover 219 is in sealed movable connection with the outer auger end cover 222 at the corresponding end of the auger shell 209, as a preferred embodiment, an annular groove is formed in the inner side surface of the outer auger end cover 222, a convex ring corresponding to the annular groove is formed in the outer auger blade end cover 219, a sealing oil seal 223 is respectively installed on an inner hole and an outer circle of the convex ring, the convex ring is in sealed movable connection in the annular groove through the sealing oil seal 223, and the sealing oil seal 223 can be a general framework oil seal. An outer auger liquid through cavity 221 is formed between the outer auger blade end cover 219 and an outer auger end cover 222 at the corresponding end of the auger casing 209, an outer auger liquid through connector 218 is arranged on the outer auger end cover 222, and the outer auger liquid through connector 218 is communicated with the outer auger liquid through cavity 221.

Referring to fig. 8 and 9, the inner packing auger blade 215 on the inner packing auger 214 is of a hollow structure, the inner packing auger blade 215 comprises an inner packing auger main blade 227 and an inner packing auger auxiliary blade 226, the outer periphery of the inner packing auger main blade 227 is connected with the outer periphery of the inner packing auger auxiliary blade 226 in a sealing way, the inner periphery of the inner packing auger main blade 227 and the inner periphery of the inner packing auger auxiliary blade 226 are connected with the inner packing auger shaft 216 in a sealing way, an inner packing auger hollow cavity 225 is formed among the inner packing auger main blade 227, the inner packing auger auxiliary blade 226 and the inner packing auger shaft 216, inner packing auger blade end covers 205 are arranged at two ends of the inner packing auger blade 215 of the hollow structure, an inner packing auger communication hole 206 communicated with the inner packing auger hollow cavity 225 of the inner packing auger blade 215 is arranged on the inner packing auger blade end covers 205, the inner auger blade end cover 205 is welded and sealed and fixedly connected with the inner auger main blade 227, the inner auger auxiliary blade 226 and the inner auger shaft 216, the inner auger blade end cover 205 is in sealed and movable connection with the inner auger end cover 202 at the corresponding end of the auger barrel 208, as a preferred embodiment, an annular groove is arranged in the inner cavity of the inner auger end cover 202, a convex ring corresponding to the annular groove is arranged on the inner auger blade end cover 205, a sealing oil seal 223 is respectively arranged on the inner hole and the outer circle of the convex ring, the convex ring is in sealed and movable connection with the annular groove through the sealing oil seal 223, the sealing oil seal 223 can adopt a general framework oil seal, and a bearing is also arranged in the convex ring inner hole on the inner auger blade end cover 205 at the tail end of the inner auger shaft 216, so that the tail end of the inner auger shaft 216 is supported by the inner auger end cover 202. An inner auger liquid passing cavity 204 is formed between an inner auger blade end cover 205 and an inner auger end cover 202 at the corresponding end of the auger barrel 208, an inner auger liquid passing connector 203 is arranged on the inner auger end cover 202, and the inner auger liquid passing connector 203 is communicated with the inner auger liquid passing cavity 204.

The outer auger liquid-passing connector 218 and the inner auger liquid-passing connector 203 which are positioned at the discharging end are communicated with the hot air auxiliary output port 517 of the heat pump unit 513 through an air pipe, the outer auger liquid-passing connector 218 and the inner auger liquid-passing connector 203 which are positioned at the feeding end are communicated with the return air auxiliary suction port 521 of the heat pump unit 513 through an air pipe, and the inner auger feeding port 207 is communicated with the discharging hopper 120 of the water filtering conveyer 1.

The mixer 4 can adopt a structure of a mixer adopted in an invention patent 'efficient conveying mixer set' with a patent number of CN201821767332.2, the mixer 4 is provided with two mixing feed inlets, and the two mixing feed inlets are respectively communicated with an outer auger discharge port 217 and an inner auger discharge port 224 on the coaxial double-auger temperature-control conveyor 2, and the mixing discharge port of the mixer 4 is communicated with a drying feed port 501 of the sludge drying equipment 5.

The sludge drying device 5 is shown in fig. 10, and comprises a heat pump unit 513 and a drying unit 502 which is communicated with the heat pump unit 513, wherein at least three groups of net chain conveyors 504 are arranged in the drying unit 502, four groups of net chain conveyors 504 are shown in the drawing, the net chain conveyors 504 are staggered up and down at intervals, the conveying directions of adjacent net chain conveyors 504 are opposite, a transition hopper 509 is arranged between the discharging end of the upper net chain conveyor 504 and the feeding end of the lower adjacent net chain conveyor 504, the drying feeding port 501 of the drying unit 502 corresponds to the feeding end of the uppermost net chain conveyor 504, and the drying discharging port 503 of the drying unit 502 corresponds to the discharging end of the lowermost net chain conveyor 504.

A cleaning roller 508 is rotatably supported on the mesh chain conveyor 504, the cleaning roller 508 is positioned at the inner side of the discharge end of the mesh chain conveyor 504, as shown in fig. 11 and 12, a plurality of cleaning convex columns 526 are arranged on the surface of the cleaning roller 508, the cleaning convex columns 526 on the cleaning roller 508 are uniformly distributed and arrayed into a plurality of rows along the circumferential direction, and the distance between two adjacent rows of cleaning convex columns 526 corresponds to the distance between two adjacent rows of meshes 525 of the conveying mesh chain 524 along the length direction; the number and position of cleaning studs 526 in each row of cleaning studs 526 corresponds to the number and position of the openings 525 in the width direction of the conveyor chain 524, the cleaning studs 526 are inserted into corresponding openings 525 in the conveyor chain 524 in the chain conveyor 504, and the cleaning roller 508 is driven in rotation by the conveyor chain 524 through the openings 525 and the cleaning studs 526.

A hot air input hopper 506 is arranged below a drying shell 510 of the drying unit 502, the hot air input hopper 506 is communicated with a hot air output port 514 of the heat pump unit 513, a return air collecting hopper 505 is arranged above the drying shell 510 of the drying unit 502, air guide partition plates 507 which enable air flow to be uniformly distributed are arranged in the hot air input hopper 506 and the return air collecting hopper 505, the return air collecting hopper 505 is communicated with a return air suction inlet 519 of the heat pump unit 513, and an opening of the hot air input hopper 506 and an opening of the return air collecting hopper 505 are opposite to the mesh chain conveyor 504.

The heat pump unit 513 comprises a heat pump unit shell 512, an evaporator 516, a compressor 511, an expansion valve 522, a condenser 518 and a fan 515, wherein the evaporator 516, the compressor 511, the expansion valve 522 and the condenser 518 form a refrigerant working loop, a condensate tank 520 is arranged below the evaporator 516, a return air suction inlet 519 is arranged on the heat pump unit shell 512 and opposite to the evaporator 516, the fan 515 is adjacent to the condenser 518, and a hot air outlet 514 is arranged on the heat pump unit shell 512 and communicated with an air outlet of the fan 515; the return air auxiliary inlet 521 and the hot air auxiliary outlet 517 are both disposed on the heat pump unit casing 512 of the heat pump unit 513, the return air auxiliary inlet 521 is adjacent to the return air inlet 519, the hot air auxiliary outlet 517 is adjacent to the hot air outlet 514, and a condensate outlet 523 communicating with the condensate tank 520 is also disposed on the heat pump unit casing 512.

The material distributing conveyor 3 may be a pushing material distributing device in the "pushing material distributing scraper conveyor set" of the invention with the patent number CN201821767631.6, and the material distributing driving device drives the material distributing block disposed in the material distributing box to move left and right, so that the material to be distributed is conveyed to two discharge ports, or of course, other forms of material distributing conveying devices may be adopted, where a discharge port of the material distributing conveyor 3 is communicated with the drying discharge port 503, a discharge port of the material distributing conveyor 3 is communicated with the outer auger feed port 210 of the coaxial double-auger temperature-controlled conveyor 2, and according to the layout of the production site, a discharge port of the material distributing conveyor 3 may be directly communicated with the outer auger feed port 210 of the coaxial double-auger temperature-controlled conveyor 2, or another discharge port of the material distributing conveyor 3 may be communicated with the feed port of the scraper conveyor 6 by using a scraper conveyor or a temperature-controllable screw conveyor.

The scraper conveyor 6 is shown in fig. 13, and comprises a trough 601 and a scraper chain 602, wherein the scraper chain 602 is driven by a scraper conveying motor to run in the trough 601 through scraper chain sprockets, conveying scrapers 603 are arranged on the left side and the right side of the scraper chain 602, as shown in fig. 14 and 15, cleaning scrapers 607 are arranged at the overhanging ends of the conveying scrapers 603 on the scraper chain 602, cleaning scrapers 607 are arranged on each conveying scraper 603 of the scraper chain 602 at intervals, and a cleaning scraper 607 can be arranged on each conveying scraper 603 at intervals of five to ten conveying scrapers 603, and the cleaning scrapers 607 are arranged at the overhanging ends of the left conveying scraper 603 and the right conveying scraper 603 at the same position in the length direction of the scraper chain 602; the cleaning scraper 607 is hinged on the cleaning scraper connecting seat 604, and as a preferred embodiment, a cleaning scraper hinged support 610 is arranged on the cleaning scraper connecting seat 604, and the cleaning scraper 607 is hinged on the cleaning scraper hinged support 610 at the upper end and the lower end of the cleaning scraper connecting seat 604 through a hinge pin 611; the cleaning scraper connecting seat 604 is connected with the conveying scraper 603, and as a preferred embodiment, a connecting clamping groove 609 is formed in the cleaning scraper connecting seat 604, the width of the connecting clamping groove 609 corresponds to the thickness of the conveying scraper 603, a set screw 608 is arranged on the side wall of the connecting clamping groove 609, so that the cleaning scraper connecting seat 604 is in clamping connection with the conveying scraper 603 through the clamping groove 609 and is firmly connected through the set screw 608, and the extending direction of the cleaning scraper 607 is the advancing direction of the scraper chain 602; a spring 605 is arranged between the cleaning scraper 607 and the cleaning scraper connecting seat 604, the overhanging end of the cleaning scraper 607 is attached to the side wall of the trough 601 through the spring 605, and as a preferable implementation mode, the spring 605 is a torsion spring which is sleeved on a chain pin 611, one overhanging end of the torsion spring is propped against the cleaning scraper connecting seat 604, the other overhanging end is clamped on the cleaning scraper 607, and the acting force of the torsion spring enables the cleaning scraper 607 to be outwards opened and attached to the side wall of the trough 601; a shielding cover 606 is arranged on the outer side of the spring 605, and the shielding cover 606 is arranged on the cleaning scraping plate 607; the discharge port of the scraper conveyor 6 is communicated with a dry mud bin 8.

The dry mud bin 8 can be a conventional bucket-shaped container with a cover, and a discharge hole at the lower part of the dry mud bin 8 is communicated with a feed hole of the temperature-control screw conveyor 7.

The temperature-controlled screw conveyer 7 is shown in fig. 16, and comprises a casing 706 and a conveying screw 707, wherein a heat insulation layer 710 is arranged on the periphery of the casing 706, the conveying screw 707 comprises a screw shaft 708 and a screw blade 709 arranged on the screw shaft 708, the screw blade 709 is of a hollow structure, the screw blade 709 comprises a main blade 712 and an auxiliary blade 713, the periphery of the main blade 712 is in welding sealing connection with the periphery of the auxiliary blade 713, the inner periphery of the main blade 712 and the inner periphery of the auxiliary blade 713 are both in welding sealing connection with the screw shaft 708, a hollow screw cavity 714 is formed between the main blade 712, the auxiliary blade 713 and the screw shaft 708, two ends of the screw blade 709 of the hollow structure are provided with blade end covers 705, communication holes 703 communicated with the hollow screw cavity 714 of the screw blade 709 are formed in the blade end covers 705, the blade end covers 705 are in welding sealing connection with the main blade 712, the auxiliary blade 713 and the screw shaft 708, the blade end covers 705 are in sealing connection with the casing 701 at the corresponding ends of the casing 706, as a preferable embodiment, annular grooves are formed on the inner sides of the casing 701, a raised ring corresponding to the annular grooves are formed on the end covers, and a raised ring is arranged on the annular ring is arranged on the end covers 708, and a flange is arranged on the inner ring of the flange seal is arranged on the flange bearings of the flange shafts, and the flange bearings are arranged on the flange bearings, and the flange bearings. A liquid passing cavity 704 is formed between the blade end cover 705 and the shell end cover 701 at the corresponding end of the shell 706, a liquid passing connector 702 is arranged on the shell end cover 701, the liquid passing connector 702 is communicated with the liquid passing cavity 704, the liquid passing connector 702 at the discharge end of the temperature control screw conveyor 7 is communicated with a condensate outlet 523 on the heat pump unit 513, the condensate outlet 723 and the liquid passing connector 702 can be directly connected through a pipeline according to the layout of a production site, or can be directly discharged by means of a booster pump, and the liquid passing connector 702 at the feed end of the temperature control screw conveyor 7 can be returned to the liquid passing connector 702 at the discharge end of the temperature control screw conveyor 7 by the booster pump for recycling.

The method is characterized in that the water-containing sludge is fed into the water filtering conveyor 1 through a feed hopper 110 of the water filtering conveyor 1, the water is filtered and conveyed to a discharge end by a conveying pressing plate 114, the water enters an inner auger feed port 207 of the coaxial double-auger temperature-control conveyor 2 from a discharge hopper 120, the outer auger feed port 210 of the coaxial double-auger temperature-control conveyor 2 is used for inputting part of the dried sludge output from a discharge port of the separating conveyor 3 below a drying discharge port 503, the filtered sludge and part of the dried sludge are respectively sealed and heated to the discharge end according to a certain proportion by the coaxial double-auger temperature-control conveyor 2, and simultaneously enter a mixer 4 for mixing, so that the two sludge to be dried are uniformly mixed into relatively loose sludge with proper water content and enter a sludge drying device 5 in time for drying treatment by using a heat pump unit 513, the dried sludge is output from the drying discharge port 503 and enters the separating conveyor 3, a small part of the dried sludge is returned and conveyed to the coaxial double-auger temperature-control conveyor 2 from a discharge port of the separating conveyor 3, and most of the dried sludge is conveyed to a dry sludge storage bin 8 by the scraper conveyor 6 for temporary storage, and the dried sludge is conveyed by the spiral temperature control conveyor 7, and the temperature of the dried sludge is cooled.

In the whole process flow, the water filtering conveyor 1 can realize the water filtering function in the conveying process and can avoid blockage in the water filtering process, the coaxial double-auger temperature-control conveyor 2 can simultaneously convey the sludge after water filtering and the dried sludge for adjusting the water content of the sludge to be dried, the heat source in the heat pump unit 513 can be utilized to effectively raise the temperature of the two conveyed materials, so that the sludge to be dried can enter the sludge drying equipment at a higher temperature, the drying efficiency is improved, the temperature control efficiency is high, the energy-saving effect is good, the sludge drying equipment 5 can utilize the heat pump unit 513 to realize environmental protection and energy saving in the sludge drying process, the smoothness of meshes 525 in the conveying net chain 524 can be kept, the drying efficiency is improved, the scraper conveyor 6 can timely clean the adhered substances on the side wall of the trough 601, the high-efficiency normal operation of the scraper chain 602 is ensured, the temperature-control screw conveyor 7 can utilize the waste condensed water in the heat pump unit 513 to control the temperature of the finally output dried sludge, and the whole drying treatment conveying line has obvious energy-saving effect and high production efficiency.

The foregoing is merely illustrative of some preferred embodiments of the present invention, but the invention is not limited thereto and many modifications and variations are possible. Any modifications or variations which are based on the basic principles of the present invention should be considered as falling within the scope of the present invention.

Claims

1. The utility model provides a high-efficient intelligent sludge purification treatment production line, includes sludge drying equipment (5), its characterized in that: the sludge drying equipment (5) comprises a heat pump unit (513) and a drying unit (502) communicated with the heat pump unit (513), wherein a net chain conveyor (504) is operated in the drying unit (502), the net chain conveyors (504) are provided with at least three groups, the net chain conveyors (504) are staggered up and down at intervals, the conveying directions of adjacent net chain conveyors (504) are opposite, a drying feed inlet (501) of the drying unit (502) corresponds to the feed end of the uppermost net chain conveyor (504), and a drying discharge outlet (503) of the drying unit (502) corresponds to the discharge end of the lowermost net chain conveyor (504); a cleaning roller (508) is rotatably supported on the mesh chain conveyor (504), the cleaning roller (508) is positioned at the inner side of the discharge end of the mesh chain conveyor (504), a plurality of cleaning convex columns (526) are arranged on the surface of the cleaning roller (508), the cleaning convex columns (526) are inserted into corresponding meshes (525) on a conveying mesh chain (524) in the mesh chain conveyor (504), and the cleaning roller (508) is driven to rotate by the conveying mesh chain (524) through the meshes (525) and the cleaning convex columns (526); a hot air input hopper (506) is arranged below a drying shell (510) of the drying unit (502), the hot air input hopper (506) is communicated with a hot air output port (514) of the heat pump unit (513), a return air collecting hopper (505) is arranged above the drying shell (510) of the drying unit (502), the return air collecting hopper (505) is communicated with a return air suction inlet (519) of the heat pump unit (513), and an opening of the hot air input hopper (506) and an opening of the return air collecting hopper (505) are opposite to the net chain conveyor (504); the heat pump unit (513) comprises a heat pump unit shell (512), an evaporator (516), a compressor (511), an expansion valve (522), a condenser (518) and a fan (515), wherein the evaporator (516), the compressor (511), the expansion valve (522) and the condenser (518) form a refrigerant working loop, a condensate tank (520) is arranged below the evaporator (516), a return air suction inlet (519) is formed in the heat pump unit shell (512) and is opposite to the evaporator (516), the fan (515) is adjacent to the condenser (518), and a hot air outlet (514) is formed in the heat pump unit shell (512) and is communicated with an air outlet of the fan (515); a return air auxiliary suction inlet (521) and a hot air auxiliary output port (517) are also arranged on a heat pump unit shell (512) of the heat pump unit (513), and a condensate water outlet (523) communicated with the condensate water tank (520) is also arranged on the heat pump unit shell;

the drying feed inlet (501) is communicated with a mixing feed outlet of the mixer (4), the mixer (4) is provided with two mixing feed inlets, and the two mixing feed inlets are respectively communicated with an outer auger feed outlet (217) and an inner auger feed outlet (224) on the coaxial double auger temperature control conveyor (2); the drying discharge port (503) is communicated with a feed port of the distributing conveyor (3), one discharge port of the distributing conveyor (3) is communicated with an outer auger feed port (210) of the coaxial double auger temperature control conveyor (2), and the other discharge port of the distributing conveyor (3) is communicated with a feed port of the scraper conveyor (6);

The coaxial double-auger temperature-control conveyor (2) comprises an auger Long Jike (209) fixedly connected to a machine base (201), an outer auger (212) is arranged in the auger Long Jike (209), outer auger blades (213) of the outer auger (212) are arranged on the periphery of an auger cylinder (208), outer auger end covers (222) are arranged at two ends of the auger Long Jike (209), the auger cylinder (208) is movably inserted in the outer auger end covers (222) in a sealing manner, an outer auger feed port (210) and an outer auger discharge port (217) are respectively arranged at two ends of the auger Long Jike (209), an inner auger (214) is also arranged in the auger cylinder (208), two ends of the auger cylinder (208) are movably connected with the inner auger end covers (202), the inner auger end covers (202) are fixedly connected to the machine base (201), an inner auger feed port (207) and an inner auger discharge port (224) are respectively arranged on the peripheral side walls of the two inner auger end covers (202), an inner auger shaft (216) of the inner auger (214) is rotatably supported on the inner auger end covers (202), an outer auger (212) and the inner auger (214) are respectively in transmission connection with corresponding driving devices, the outer auger blades (213) are of hollow structures, outer auger blade end covers (219) are arranged at two ends of the outer auger blades (213) of the hollow structures, An outer auger communication hole (220) communicated with an outer vane hollow cavity (229) of the outer auger vane (213) is formed in the outer auger vane end cover (219), the outer auger vane end cover (219) is movably connected with an outer auger end cover (222) at the corresponding end of the auger Long Jike (209) in a sealing mode, an outer auger liquid through cavity (221) is formed between the outer auger vane end cover (219) and the outer auger end cover (222) at the corresponding end of the auger Long Jike (209), an outer auger liquid through joint (218) is arranged on the outer auger end cover (222), and the outer auger liquid through joint (218) is communicated with the outer auger liquid through cavity (221); The inner auger blade (215) on the inner auger (214) is of a hollow structure, inner auger blade end covers (205) are arranged at two ends of the inner auger blade (215) of the hollow structure, inner auger communication holes (206) communicated with inner blade hollow cavities (225) of the inner auger blade (215) are arranged on the inner auger blade end covers (205), the inner auger blade end covers (205) are movably connected with inner auger end covers (202) at corresponding ends of the auger cylinder (208) in a sealing way, inner auger liquid through cavities (204) are formed between the inner auger blade end covers (205) and the inner auger end covers (202) at corresponding ends of the auger cylinder (208), An inner auger liquid-passing connector (203) is arranged on the inner auger end cover (202), and the inner auger liquid-passing connector (203) is communicated with an inner auger liquid-passing cavity (204); The outer auger liquid passing connector (218) and the inner auger liquid passing connector (203) which are positioned at the discharging end are communicated with a hot air auxiliary output port (517) of the heat pump unit (513), and the outer auger liquid passing connector (218) and the inner auger liquid passing connector (203) which are positioned at the feeding end are communicated with a return air auxiliary suction port (521) of the heat pump unit (513); the inner auger feed inlet (207) is communicated with a discharge hopper (120) of the drainage conveyor (1);

The water filtering conveyor (1) comprises a feed hopper (110), the feed hopper (110) is arranged on a water filtering conveyor shell (108), the water filtering conveyor shell (108) comprises a feeding fixed ring piece (111) for arranging the feed hopper (110) and a discharging fixed ring piece (116) arranged at an output end, a plurality of fixed ring pieces (113) and movable ring pieces (112) are alternately arranged between the feeding fixed ring piece (111) and the discharging fixed ring piece (116), the inner side surface of the feeding fixed ring piece (111), the inner side surface of the discharging fixed ring piece (116) and the two side surfaces of the fixed ring piece (113) are respectively attached to the side surfaces of the opposite movable ring pieces (112), the feeding fixed ring piece (111), the discharging fixed ring piece (116) and each fixed ring piece (113) are connected through a connecting rod (124), the movable ring piece (112) is connected with a movable ring piece driving device (109), and the inner hole shape of the movable ring piece (112) corresponds to the inner hole shape of the fixed ring piece (113). The feeding fixed ring piece (111), the discharging fixed ring piece (116) and the inner holes of the fixed ring pieces (113) form a working cavity of the water filtering conveyor shell (108), a conveying pressing plate (114) is arranged in the working cavity, the shape of the conveying pressing plate (114) corresponds to the shape of the working cavity, and the conveying pressing plate (114) is driven by a conveying driving device (104) to reciprocate; a discharge end cover (118) is hinged on the discharge fixed ring piece (116), and the discharge end cover (118) is tightly attached to the outer side of the discharge fixed ring piece (116) through an elastic device (117); the feeding fixed ring piece (111) and the discharging fixed ring piece (116) are fixedly connected to the water filtering conveying frame (103), a water collecting bucket (115) is arranged on the water filtering conveying frame (103), an opening of the water collecting bucket (115) faces to the lower part of the water filtering conveying shell (108), and the water collecting bucket (115) is communicated with the water conveying pipe (101); the discharging hopper (120) is arranged below the discharging fixed ring piece (116);

The scraper conveyor (6) comprises a trough (601) and scraper chains (602), conveying scrapers (603) are arranged on the left side and the right side of each scraper chain (602), cleaning scrapers (607) are arranged at the extending ends of the conveying scrapers (603) on each scraper chain (602), the cleaning scrapers (607) are hinged to cleaning scraper connecting seats (604), the cleaning scraper connecting seats (604) are connected with the conveying scrapers (603), the extending direction of the cleaning scrapers (607) is the advancing direction of each scraper chain (602), springs (605) are arranged between the cleaning scrapers (607) and the cleaning scraper connecting seats (604), and the extending ends of the cleaning scrapers (607) are attached to the side walls of the trough (601) through the springs (605); the discharge port of the scraper conveyor (6) is communicated with a dry mud bin (8);

The device comprises a dry sludge bin (8), a temperature control screw conveyor (7), a shell (706) and a conveying screw (707), wherein the conveying screw (707) comprises a screw shaft (708) and a screw blade (709) arranged on the screw shaft (708), the screw blade (709) is of a hollow structure, two ends of the screw blade (709) of the hollow structure are provided with blade end covers (705), communication holes (703) communicated with the hollow screw cavity (714) of the screw blade (709) are formed in the blade end covers (705), the blade end covers (705) are in sealing movable connection with the shell end covers (701) at the corresponding ends of the shell (706), a liquid communication cavity (704) is formed between the blade end covers (705) and the shell end covers (701), a liquid communication joint (702) is arranged on the shell end covers (701), the liquid communication joint (702) is communicated with the liquid communication cavity (704), and a heat pump set (523) at the discharging end of the temperature control screw conveyor (7) is communicated with the condensed water outlet (523);

the cleaning convex columns (526) on the cleaning roller (508) are uniformly distributed and arranged into a plurality of rows along the circumferential direction, and the distance between two adjacent rows of cleaning convex columns (526) corresponds to the distance between two adjacent rows of meshes (525) of the conveying net chain (524) along the length direction; the number and positions of the cleaning posts (526) in each row of cleaning posts (526) correspond to the number and positions of the meshes (525) in the width direction of the conveying net chain (524);

A transition hopper (509) is arranged between the discharge end of the mesh chain conveyor (504) and the feed end of the adjacent mesh chain conveyor (504) below.

2. The efficient and intelligent sludge purification treatment production line according to claim 1, wherein: the outer auger blade (213) comprises an outer auger main blade (230) and an outer auger auxiliary blade (228), the outer periphery of the outer auger main blade (230) is connected with the outer periphery of the outer auger auxiliary blade (228) in a sealing way, the inner periphery of the outer auger main blade (230) and the inner periphery of the outer auger auxiliary blade (228) are connected with the auger cylinder (208) in a sealing way, and an outer blade hollow cavity (229) is formed among the outer auger main blade (230), the outer auger auxiliary blade (228) and the auger cylinder (208); the inner auger blade (215) comprises an inner auger main blade (227) and an inner auger auxiliary blade (226), the outer periphery of the inner auger main blade (227) is connected with the outer periphery of the inner auger auxiliary blade (226) in a sealing way, the inner periphery of the inner auger main blade (227) and the inner periphery of the inner auger auxiliary blade (226) are connected with the inner auger shaft (216) in a sealing way, and an inner blade hollow cavity (225) is formed among the inner auger main blade (227), the inner auger auxiliary blade (226) and the inner auger shaft (216).

3. The efficient and intelligent sludge purification treatment production line according to claim 1, wherein: an annular groove is formed in the inner side surface of the outer auger end cover (222), a convex ring corresponding to the annular groove is arranged on the outer auger blade end cover (219), a sealing oil seal (223) is respectively arranged on an inner hole and an outer circle of the convex ring, and the convex ring is movably spliced in the annular groove in a sealing mode through the sealing oil seal (223); an annular groove is formed in the inner cavity of the inner auger end cover (202), a convex ring corresponding to the annular groove is arranged on the inner auger blade end cover (205), sealing oil seals (223) are respectively arranged on the inner holes and the outer circles of the convex ring, and the convex ring is movably spliced in the annular groove in a sealing mode through the sealing oil seals (223).

4. The efficient and intelligent sludge purification treatment production line according to claim 1, wherein: four connecting holes (125) are formed in the peripheries of inner holes of the feeding fixed ring piece (111), the discharging fixed ring piece (116) and the fixed ring piece (113), the diameters of the connecting holes (125) correspond to the diameters of the connecting rods (124), four waist round holes (126) are formed in the periphery of the inner hole of the movable ring piece (112), the positions of the waist round holes (126) correspond to the positions of the connecting holes (125), the width of the waist round holes (126) corresponds to the diameters of the connecting rods (124), the length direction of each waist round hole (126) is parallel to the left side edge and the right side edge of the movable ring piece (112), and the connecting rods (124) are inserted into the connecting holes (125) and the waist round holes (126); the movable ring piece driving device (109) comprises an eccentric shaft (123), rectangular grooves (127) are formed in the left side edge and the right side edge of the movable ring piece (112), the eccentric shaft (123) is arranged in the rectangular grooves (127), two ends of the eccentric shaft (123) are respectively rotatably supported on the feeding fixed ring piece (111) and the discharging fixed ring piece (116) through eccentric shaft supporting seats (122), and one end of the eccentric shaft (123) is connected with a movable ring piece driving motor (121).

5. The efficient and intelligent sludge purification treatment production line according to claim 1, wherein: the conveying driving device (104) comprises a screw (102) fixedly connected with a conveying pressing plate (114), a nut (105) matched with the screw (102) is rotatably supported on a nut seat (107), the nut seat (107) is mounted on the water filtering conveying frame (103), and the nut (105) is in transmission connection with a conveying driving motor (106).

6. The efficient and intelligent sludge purification treatment production line according to claim 1, wherein: the elastic device (117) comprises a torsion spring (129), the torsion spring (129) is arranged on the discharge fixing ring piece (116) through a torsion spring seat (128), one end of the torsion spring (129) is adjustably fixed on the torsion spring seat (128), and the other end of the torsion spring (129) is pressed on the discharge end cover (118); and a sealing ring (119) is arranged on the inner side surface of the discharging end cover (118) which is tightly attached to the outer side of the discharging fixed ring piece (116).

7. The efficient and intelligent sludge purification treatment production line according to claim 1, wherein: the spiral blade (709) comprises a main blade (712) and an auxiliary blade (713), the outer periphery of the main blade (712) is connected with the outer periphery of the auxiliary blade (713) in a sealing way, the inner periphery of the main blade (712) and the inner periphery of the auxiliary blade (713) are connected with the spiral shaft (708) in a sealing way, and a hollow spiral cavity (714) is formed among the main blade (712), the auxiliary blade (713) and the spiral shaft (708).

8. The efficient and intelligent sludge purification treatment production line according to claim 1, wherein: the inner side surface of the shell end cover (701) is provided with an annular groove, the blade end cover (705) is provided with a convex ring corresponding to the annular groove, the inner hole and the outer circle of the convex ring are respectively provided with a framework oil seal (711), and the convex ring is movably spliced in the annular groove in a sealing way through the framework oil seal (711).