CN115367984B

CN115367984B - Filter pressing device for sludge treatment

Info

Publication number: CN115367984B
Application number: CN202211306425.6A
Authority: CN
Inventors: 张兴瑞; 王瑞平; 张娟; 于克铖; 隋鹏; 孙鹏举
Original assignee: Cecep Runda Yantai Environmental Protection Co ltd
Current assignee: Cecep Runda Yantai Environmental Protection Co ltd
Priority date: 2022-10-25
Filing date: 2022-10-25
Publication date: 2023-01-20
Anticipated expiration: 2042-10-25
Also published as: CN115367984A

Abstract

The invention belongs to the technical field of sludge treatment, and discloses a filter pressing device for sludge treatment, which comprises a first support frame, wherein a first connecting piece is fixedly arranged in the middle of the first support frame, supporting rods are fixedly connected to both sides of the first connecting piece, transverse grooves are formed in the middle of two groups of supporting rods, a second connecting piece is fixedly connected to the other end of each supporting rod, a second support frame is fixedly connected to one end of each second connecting piece, a fixed pressing plate is fixedly connected to the other end of each second connecting piece, and a hydraulic cylinder is fixedly arranged in the middle of the first connecting piece. Guarantee that the filter cloth is unlikely to laminate filter tank inner wall completely when carrying out the filter-pressing, influence the filter-pressing effect, can increase the water pressure that the feed liquor pipe pump went into the cavity simultaneously for water pressure opens the check pressure valve, can wash the filter cloth from the reverse side of filter cloth, and the filter cloth of being convenient for openly is stained with the coming off of attaching mud impurity, and washing effect is better.

Description

Filter pressing device for sludge treatment

Technical Field

The invention belongs to the technical field of sludge treatment, and particularly relates to a filter pressing device for sludge treatment.

Background

The plate-and-frame filter press is a machine for sludge dewatering. The filter cake has the advantages of large filtration driving force, high solid content of the filter cake, clear filtrate, high solid recovery rate and the like, and is still widely applied to some small sewage plants. The filter is formed by alternately arranging plates and frames, filter cloth is covered on two sides of a filter plate, and the plates and the frames are pressed by a pressing device, namely a filter pressing chamber is formed between the plates and the frames. Small holes are formed in the same positions of the middle of the upper ends of the plate and the frame, a channel is formed after the small holes are tightly pressed, sludge pressurized to 0.2-0.4 MPa enters a filter pressing chamber through the channel, grooves are carved on the surface of a filter plate, a pore channel for discharging filtrate is drilled at the lower end of the filter plate, and the filtrate is discharged out of a filter machine along the grooves and the pore channel through filter cloth under pressure, so that the sludge is dewatered.

However, the plate and frame filter press in the prior art still has the following disadvantages in the practical use process: firstly, in the prior art, after filter pressing is completed, the mud cake on each filter plate needs to be knocked and the like by pulling each filter plate once to make the mud cake fall off, and the working mode is slow in speed and low in efficiency; secondly, because the filter cloth is generally located between filter plate and the filter frame, the filter cloth need wash every time the work to get rid of the surperficial residue, but the conventional washing generally washes the filter surface of filter cloth, therefore not only the cleaning performance is general, when positive cleaning filter cloth moreover, to the less damage that appears on the filter cloth, is difficult to in time, effectual discovery.

Disclosure of Invention

The invention aims to provide a filter pressing device for sludge treatment, which aims to solve the problems in the background technology.

In order to achieve the above purpose, the invention provides the following technical scheme: the utility model provides a filter pressing device for sludge treatment, includes first support frame, the middle part fixed mounting of first support frame has first connecting piece, the equal fixedly connected with bracing piece in both sides of first connecting piece, the cross slot has all been seted up at the middle part of two sets of bracing pieces, the other end fixedly connected with second connecting piece of bracing piece, the one end fixedly connected with second support frame of second connecting piece, the other end fixedly connected with fixed plate of second connecting piece, the middle part fixed mounting of first connecting piece has the pneumatic cylinder, the output fixedly connected with movable clamp plate of pneumatic cylinder, the middle part at both ends is all fixedly connected with around movable clamp plate and the cross slot activity cup joints the movable slide block, be provided with the multiunit filter between movable clamp plate and the fixed clamp plate, the middle part at both ends all fixedly connected with in the middle part of filter and the cross slot activity cup joints the movable slide block, be provided with coupling spring between movable slide block and two liang of being adjacent, the middle part fixedly connected with feed liquid section of thick bamboo of filter, the filter cell has all been seted up in the outside at filter both ends middle part, seted up the discharge opening between filter liquid groove and the section of thick bamboo, and the filter cloth's inside fixed mounting has the filter cloth, the bottom of filter cell is seted up the apopore that is in the filter cloth inboard.

Preferably, the filter plate is internally provided with a cavity, the movable plates are movably sleeved on two sides of the interior of the cavity and connected with each other through a plurality of groups of supporting springs, the movable plates are fixedly connected with a plurality of groups of spray heads movably sleeved with the filter liquid tank at one ends, which are far away from each other, of the movable plates, the limiting ring is fixedly mounted on the inner side of the cavity, and the middle of the upper end of the filter plate is fixedly connected with a liquid inlet pipe communicated with the interior of the cavity.

Preferably, the nozzle comprises a main body fixedly connected with the movable plate, a one-way pressure valve with a one-way flow direction from the inside of the cavity to the inside of the main body is arranged in the main body, one end of the main body facing the filter cloth is arc-shaped, a plurality of groups of spray holes are formed in one end of the main body facing the filter cloth, and the spray holes are arranged in a large-outside and small-inside mode.

Preferably, the filter cloth comprises a frame and filtrate cloth, the upper end and the bottom end of the filtrate tank are both provided with limiting devices, each limiting device comprises a groove, a return spring is fixedly mounted inside the groove, and one end of each return spring is fixedly connected with a clamping block movably sleeved with the groove.

Preferably, the bottoms of the movable sliding block and the sliding block are provided with cylindrical rollers.

The invention has the following beneficial effects:

1. according to the invention, through the arrangement of the connecting spring, the cavity and the spray heads, after the filter pressing work is finished, the hydraulic cylinder retracts, the movable pressing plate and each filter plate are automatically separated to form a certain interval under the resilience action of the connecting spring at the moment, so that mud cakes can fall off conveniently, meanwhile, the supporting spring can be automatically opened under the self resilience action, so that the spray heads are ejected out towards two sides to push the mud cakes, clear water can be pumped in through the liquid inlet pipe, and the spray heads at two sides are further ejected out when the water pressure is smaller than the threshold value of the one-way pressure valve, so that the mud cakes can automatically fall off.

2. According to the invention, through the arrangement of the cavity, the liquid inlet pipe, the movable plate and the spray head, the filter cloth can be supported, the filter cloth is prevented from completely adhering to the inner wall of the filter liquid tank when being subjected to filter pressing, the filter pressing effect is influenced, meanwhile, when the filter cloth needs to be cleaned, the water pressure pumped into the cavity by the liquid inlet pipe can be increased, so that the one-way pressure valve is opened by the water pressure, the filter cloth can be washed from the reverse side of the filter cloth, the washing effect is better, the front side of the filter cloth is convenient to be adhered with sludge impurities to fall off, meanwhile, because the filter cloth is flushed from the inner side, a worker can judge the integrity of the filter cloth by directly ejecting water flow out from the outer side of the filter cloth, and the filter cloth can be timely replaced when being damaged.

3. According to the filter cloth, the filter cloth and the limiting device are arranged, the filter cloth is arranged into the frame and the filter cloth, so that a better supporting force can be provided for the filter cloth, the filter cloth can be quickly taken out by pressing the clamping block towards the inside of the groove when the filter cloth is damaged, and when a new filter cloth is replaced, the frame of the filter cloth and the filter cloth can be clamped inside the filter tank only by directly pressing the filter cloth towards the inside of the filter tank, so that the filter pressing work is facilitated.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a schematic view of the interior of the filter plate according to the present invention;

FIG. 3 is an enlarged view of the point A in FIG. 2 according to the present invention;

FIG. 4 is a schematic view of the structural support spring distribution of the present invention;

FIG. 5 is a schematic view of the interior of the showerhead according to the present invention.

In the figure: 1. a first support frame; 2. a first connecting member; 3. a support bar; 4. a transverse groove; 5. a second connecting member; 6. a second support frame; 7. a hydraulic cylinder; 8. a movable pressing plate; 9. a movable slide block; 10. a filter plate; 11. a slider; 12. a connecting spring; 13. fixing a pressure plate; 14. a feed liquid cylinder; 15. a filtrate tank; 16. a discharge hole; 17. filtering cloth; 18. a water outlet hole; 19. a cavity; 20. a movable plate; 21. a support spring; 22. a spray head; 221. a main body; 222. a one-way pressure valve; 223. spraying a hole; 23. a limiting ring; 24. a liquid inlet pipe; 25. a limiting device; 251. a groove; 252. a return spring; 253. and (6) clamping blocks.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 3, an embodiment of the present invention provides a filter pressing device for sludge treatment, including a first support frame 1, a first connecting member 2 is fixedly installed in the middle of the first support frame 1, support rods 3 are fixedly connected to both sides of the first connecting member 2, transverse grooves 4 are formed in the middle of the two sets of support rods 3, a second connecting member 5 is fixedly connected to the other end of each support rod 3, a second support frame 6 is fixedly connected to one end of each second connecting member 5, a fixed pressure plate 13 is fixedly connected to the other end of each second connecting member 5, a hydraulic cylinder 7 is fixedly installed in the middle of the first connecting member 2, a movable pressure plate 8 is fixedly connected to the output end of the hydraulic cylinder 7, movable sliding blocks 9 movably sleeved with the transverse grooves 4 are fixedly connected to the middle of the movable pressure plate 8 and the middle of the fixed pressure plate 13, a plurality of sets of filter plates 10 are arranged between the movable pressure plate 8 and the fixed pressure plate 13, sliding blocks 11 movably sleeved with the transverse grooves 4 are fixedly connected to the middle of the front and rear ends of the filter plates 10, connecting springs 12 are arranged between the movable sliding blocks 9 and the sliding blocks 11, a feed liquid cylinder 14 is fixedly connected to the middle of the filter plate 10, outer sides of the middle of the two ends of the filter plates 10 are respectively provided with feed liquid cylinders 15, filter plates 15 and filter cloth holes 16 are arranged on the inner sides of the filter liquid tanks 17, and filter cloth grooves 17 are arranged at the filter plates 17, and the inner sides of the filter liquid tanks 17.

As shown in fig. 2 to 4, a cavity 19 is provided inside the filter plate 10, movable plates 20 are movably sleeved on both sides inside the cavity 19, the two movable plates 20 are connected through a plurality of sets of supporting springs 21, a plurality of sets of spray heads 22 movably sleeved with the filtrate tank 15 are fixedly connected to one ends of the two movable plates 20, which are far away from each other, a limiting ring 23 is fixedly mounted on the inner side of the cavity 19, a liquid inlet pipe 24 communicated with the cavity 19 is fixedly connected to the middle of the upper end of the filter plate 10, the limiting ring 23 is arranged to ensure that the distance between the movable plates 20 on both sides moving towards the inner side is uniform, and the spray heads 22 can be indirectly controlled to stretch into the minimum length of the filtrate tank 15, so that the filter cloth 17 can be supported well to ensure that the filtrate can be rapidly left from the water outlet 18 on the bottom after being filtered, and the filter cloth can not repeatedly enter into sludge.

As shown in fig. 5, the nozzle 22 includes a main body 221 fixedly connected to the movable plate 20, a one-way pressure valve 222 is disposed inside the main body 221, and a one-way flow direction is from inside the cavity 19 to inside the main body 221, one end of the main body 221 facing the filter cloth 17 is arc-shaped, and one end of the main body 221 facing the filter cloth 17 is provided with a plurality of sets of nozzle holes 223, the nozzle holes 223 are arranged in a large-outside and small-inside manner, the nozzle 22 can support the filter cloth 17, and ensure that the filter cloth 17 is not completely attached to the inner wall of the filter liquid tank 15 during filter pressing, thereby affecting the filter pressing effect, and can remove the mud cake under the dual actions of water pressure and the support spring 21, so as to facilitate automatic dropping of the mud cake.

Wherein, the filter cloth 17 comprises a frame and filtrate cloth, the upper end and the bottom of the filtrate tank 15 are both provided with a limiting device 25, the limiting device 25 comprises a groove 251, the inside fixed mounting of the groove 251 is provided with a return spring 252, one end of the return spring 252 is fixedly connected with a clamping block 253 movably sleeved with the groove 251, the filter cloth 17 is made into the frame and the filtrate cloth, not only a better supporting force can be given to the filtrate cloth, but also when the filtrate cloth is damaged, the clamping block 253 can be pressed towards the inside of the groove 251, the filter cloth 17 can be taken out quickly, when a new filter cloth 17 is replaced, the filter cloth 17 only needs to be directly pressed towards the inside of the filtrate tank 15, the frame of the filter cloth 17 and the filtrate cloth can be clamped inside the filtrate tank 15, and filter pressing work is facilitated.

Wherein, the bottom of moving slider 9 and sliding block 11 all is provided with cylindrical roller, reduces the frictional force between activity clamp plate 8 and filter 10 and the cross slot 4, is convenient for separate under the rebound effect of coupling spring 12 between activity clamp plate 8 and each filter 10 automatically, and the mud cake of being convenient for drops.

The working principle and the using process are as follows:

when filter pressing is carried out, the hydraulic cylinder 7 pushes the movable pressing plate 8 and the filter plate 10 to be contacted and tightened with each other, sludge feed liquid is introduced from the feed liquid cylinder 14, and the sludge feed liquid enters the filtrate tank 15 from the discharge hole 16 to carry out filter pressing; after the filter-pressing work is completed, the hydraulic cylinder 7 retracts, at the moment, the movable pressing plate 8 and each filter plate 10 are automatically separated to form a certain interval under the rebounding effect of the connecting spring 12, the mud cakes can fall off conveniently, meanwhile, the supporting spring 21 can be automatically opened under the rebounding effect of the supporting spring 21, the spray heads 22 are ejected towards two sides, the mud cakes are pushed, clear water can be pumped into the clean water through the liquid inlet pipe 24, the spray heads 22 on two sides are further ejected when the water pressure is smaller than the threshold value of the one-way pressure valve 222, and the mud cakes can automatically fall off.

After the filter-pressing work, when the filter cloth 17 needs to be cleaned after the mud cake falls off, the water pressure of the liquid inlet pipe 24 pumped into the cavity 19 can be increased, so that the one-way pressure valve 222 is opened by the water pressure, the filter cloth 17 can be washed from the reverse side of the filter cloth 17, the washing effect is better, the filter cloth 17 is convenient to be adhered with the falling of sludge impurities on the front side, meanwhile, the working personnel can directly jet water through the outer side of the filter cloth 17 or not by flushing the filter cloth 17 from the inner side, the integrity of the filter cloth 17 is judged, and the filter cloth 17 can be replaced in time when being damaged.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a filter pressing device for sludge treatment, including first support frame (1), the middle part fixed mounting of first support frame (1) has first connecting piece (2), the equal fixedly connected with bracing piece (3) in both sides of first connecting piece (2), horizontal groove (4) have all been seted up at the middle part of two sets of bracing pieces (3), the other end fixedly connected with second connecting piece (5) of bracing piece (3), the one end fixedly connected with second support frame (6) of second connecting piece (5), the other end fixedly connected with holding plate (13) of second connecting piece (5), the middle part fixed mounting of first connecting piece (2) has pneumatic cylinder (7), the output fixedly connected with activity clamp plate (8) of pneumatic cylinder (7), the equal fixedly connected with in middle part at both ends around activity clamp plate (8) and holding plate (13) moves slider (9) that cup joints with horizontal groove (4) activity, a serial communication port: a plurality of groups of filter plates (10) are arranged between the movable pressing plate (8) and the fixed pressing plate (13), sliding blocks (11) movably sleeved with the transverse grooves (4) are fixedly connected to the middle parts of the front end and the rear end of each filter plate (10), connecting springs (12) are arranged between every two adjacent movable sliding blocks (9) and sliding blocks (11), a material liquid cylinder (14) is fixedly connected to the middle part of each filter plate (10), filtrate tanks (15) are arranged on the outer sides of the middle parts of the two ends of each filter plate (10), discharge holes (16) are formed between each filtrate tank (15) and the material liquid cylinder (14), and filter cloth (17) is fixedly arranged in the filtrate tanks (15), apopore (18) that are in filter cloth (17) inboard are seted up to the bottom in filtrate groove (15), cavity (19) have been seted up to the inside of filter (10), fly leaf (20) have all been cup jointed in the equal activity in both sides of cavity (19) inside, and are two sets of connect through multiunit supporting spring (21) between fly leaf (20), and are two sets of equal fixedly connected with multiunit shower nozzle (22) that cup joint with filtrate groove (15) activity of one end that fly leaf (20) kept away from each other, shower nozzle (22) are including main part (221) with fly leaf (20) fixed connection, the inside of main part (221) is provided with one-way circulation direction from cavity (19) inside to main part (221) ) Inside one-way pressure valve (222), main part (221) are circular-arcly towards the one end of filter cloth (17), and main part (221) have seted up multiunit orifice (223) towards the one end of filter cloth (17), orifice (223) are big-end-up inside setting, the inboard fixed mounting of cavity (19) has spacing ring (23), middle part fixedly connected with and the inside feed liquor pipe (24) that are linked together of cavity (19) of filter (10) upper end.

2. A filter-pressing device for sludge treatment according to claim 1, wherein: the filter cloth (17) comprises a frame and filter cloth, the upper end and the bottom end of the filter liquid tank (15) are respectively provided with a limiting device (25), each limiting device (25) comprises a groove (251), a return spring (252) is fixedly mounted inside each groove (251), and one end of each return spring (252) is fixedly connected with a clamping block (253) movably sleeved with each groove (251).

3. A filter-pressing device for sludge treatment according to claim 1, wherein: the bottoms of the movable sliding block (9) and the sliding block (11) are provided with cylindrical rollers.