CN1233440C - Propeller pressure type filter equipment - Google Patents
Propeller pressure type filter equipment Download PDFInfo
- Publication number
- CN1233440C CN1233440C CN 02141191 CN02141191A CN1233440C CN 1233440 C CN1233440 C CN 1233440C CN 02141191 CN02141191 CN 02141191 CN 02141191 A CN02141191 A CN 02141191A CN 1233440 C CN1233440 C CN 1233440C
- Authority
- CN
- China
- Prior art keywords
- mentioned
- pressure
- counterbalance valve
- aperture
- screw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B9/00—Presses specially adapted for particular purposes
- B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
- B30B9/12—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using pressing worms or screws co-operating with a permeable casing
- B30B9/14—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using pressing worms or screws co-operating with a permeable casing operating with only one screw or worm
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B9/00—Presses specially adapted for particular purposes
- B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
- B30B9/12—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using pressing worms or screws co-operating with a permeable casing
- B30B9/18—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using pressing worms or screws co-operating with a permeable casing with means for adjusting the outlet for the solid
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Sludge (AREA)
- Filtration Of Liquid (AREA)
Abstract
The present invention relates to a propeller pressure type filter. A propeller (4) is inserted into the inner side of a roughly cylindrical filtering body (10) in a rotatable mode, and a processing material which is supplied to the filtering body (10) from one end of the propeller (4) is conveyed to the other end through the rotation of the propeller (4); meanwhile, the processing material is filtered through the filtering body (10). The present invention has a back pressure valve (21), an air cylinder (22), an opening degree detection part (30) and a control part (40), wherein the back pressure valve (21) is arranged on an outlet (9) on the other end of the filtering body (10) and used for controlling the discharge of the filtered processing material; the air cylinder (22) is used for supplying the back pressure valve (21) with pressure for controlling the discharge of the processing material; the opening degree detection part (30) is used for detecting the opening degree of the outlet (9) and the back pressure valve (21); the control part (40) is used for controlling the air cylinder (22) according to the detection result of the opening degree detection part (30), so that the pressure corresponding to the opening degree is supplied to the back pressure valve (21). The water content of the discharged processing material can be kept constant by using the present invention when the processing amount is changed.
Description
Technical field
The present invention relates to a kind of, even the handled thing amount of change supplying with also makes the water content of the filter cake of discharge keep certain screw pressure type filter.
Background technology
The screw pressure type filter that past is utilized is, the handled things such as mud of high-moisture percentage are supplied with the cylindrical shape filtering bodies from supply port, and by being arranged at the screw of this cylinder filtering bodies inboard, the transport process thing filters to outlet and by this filtering bodies.
As above-mentioned, screw pressure type filter in the past is to be provided with control at outlet and to discharge the counterbalance valve of handled thing from outlet, and pass through drive unit, counterbalance valve is moved reciprocatingly to the axial direction of screw, and the pressure that makes the control handled thing discharge keeps constant.Thus, control keeps constant from the moisture content of the handled thing of outlet discharge.
But, above-mentioned screw pressure type filter according to conventional art is, when the quantity delivered of handled thing increases, be accompanied by the increase of handled thing quantity delivered, the pressure that squeezes handled thing to outlet also correspondingly increases, but because the pressure of counterbalance valve is constant, so, make the pressure of back pressure greater than counterbalance valve.Thus, when aperture opening ratio becomes big, accelerated filtration, the result reduces the moisture content of handled thing.
In addition, be, when the quantity delivered of handled thing reduces at the screw pressure type filter of conventional art, be accompanied by the handled thing quantity delivered and reduce, the pressure that squeezes handled thing to outlet also correspondingly reduces, but because the pressure of counterbalance valve is constant, so, make the pressure of back pressure less than counterbalance valve.Thus, even aperture opening ratio diminishes, but because of discharge handled thing from outlet under the inadequate state of filtration, the result increases the moisture content of handled thing.
As above-mentioned, in the screw pressure type filter of conventional art, there is change, the problem that the moisture content of the handled thing of discharging from outlet changes with the handled thing quantity delivered.
In addition, because the moisture content of the handled thing of discharging from outlet changes, when utilizing the handled thing of discharging to manufacture a product, there is uneven problem in the product, perhaps when burning the handled thing of discharging, in order to keep certain capacity of incinerator, existence must be controlled the problem of post processing troubles such as fuel feed accordingly with the moisture content of handled thing.
Summary of the invention
The present invention has used for reference the problems referred to above, even its purpose is to provide under the situation that treating capacity changes, also can make the handled thing moisture content of discharge keep constant screw pressure type filter.
In order to solve above-mentioned purpose, screw pressure type filter of the present invention is to insert screw in the inboard of cylindric filtering bodies, and can rotate, and the rotation by this screw, the handled thing that will supply with to above-mentioned filtering bodies from an end of above-mentioned screw is transported to the other end, filter by above-mentioned filtering bodies simultaneously, it is characterized in that having, be arranged at the outlet of the other end of above-mentioned filtering bodies and the counterbalance valve that the discharge of the handled thing after filtering is controlled; Supply with the pressing mechanism of the above-mentioned handled thing discharge pressure of control to above-mentioned counterbalance valve; Detect the aperture testing agency of above-mentioned outlet and above-mentioned counterbalance valve aperture and, control above-mentioned pressing mechanism, make controlling organization corresponding to the above-mentioned counterbalance valve of pressure feed of above-mentioned aperture according to the testing result of aperture testing agency.
In addition, in the screw pressure type filter of the invention described above, above-mentioned controlling organization is characterised in that, result according to the detection of above-mentioned testing agency, setting aperture when above in the aperture of above-mentioned counterbalance valve, the pressure that reduction is supplied with to above-mentioned counterbalance valve, and setting aperture when following when the aperture of above-mentioned counterbalance valve, increase pressure to above-mentioned counterbalance valve supply.
In addition, the screw pressure type filter of the invention described above is characterised in that, have and detect the pressure detecting mechanism that above-mentioned pressing mechanism is supplied with the pressure of above-mentioned counterbalance valve, and above-mentioned controlling organization is, control the pressure of above-mentioned counterbalance valve, the value that makes the product of the testing result of the testing result of above-mentioned aperture testing agency and above-mentioned pressure detecting mechanism equal to stipulate.
In addition, the screw pressure type filter of the invention described above is characterised in that above-mentioned pressing mechanism is a cylinder.
In addition, screw pressure type filter method of the present invention is to insert screw in the inboard of the filtering bodies of approximate circle tubular, and it can be rotated, and from an end of above-mentioned screw, the handled thing that to supply with to above-mentioned filtering bodies from an end of above-mentioned screw, be transported to the other end, filter with above-mentioned filtering bodies simultaneously, it is characterized in that, the discharge of controlled filter post processing thing by the counterbalance valve that is arranged at above-mentioned filtering bodies opposite side outlet, detect the aperture of above-mentioned outlet and above-mentioned counterbalance valve, and according to its testing result, to the pressure of above-mentioned counterbalance valve supply corresponding to above-mentioned aperture.
In addition, the recording medium of record controls program of the present invention is to insert screw in the inboard of the filtering bodies of approximate circle tubular, and it can be rotated, and the rotation by this screw, the handled thing that to supply with to above-mentioned filtering bodies from an end of above-mentioned screw, be transported to the other end, simultaneously in the screw pressure type filter that filters with above-mentioned filtering bodies, it is characterized in that, carry out following steps promptly with computer, the step of the discharge of controlled filter post processing thing by the counterbalance valve that is arranged at above-mentioned filtering bodies opposite side outlet; Detect above-mentioned outlet and above-mentioned counterbalance valve aperture step and according to the testing result that detects above-mentioned aperture, supply with the step of controlling corresponding to the pressure of above-mentioned valve degree to above-mentioned counterbalance valve.
Description of drawings
Fig. 1 is the schematic block diagram of the structure of the screw pressure type filter of this inventive embodiments of expression;
The figure of Fig. 2 for concerning between expression aperture and back pressure product and the filter cake moisture content;
Fig. 3 is the flow chart that is used to illustrate the work of screw pressure type filter.
Among the figure, 4-screw, 9-outlet, 10-filtering bodies, 21-counterbalance valve, 22-cylinder, 22A-piston rod, 23-pressure detecting portion, 24-cylinder control part, 30-aperture test section, 40-control part, 50-drive division.
The specific embodiment
Below, with reference to the screw pressure type filter of description of drawings one embodiment of the invention.Fig. 1 is the structural representation of the screw pressure type filter apparatus configuration of expression one embodiment of the invention.In the figure, screw 4 is to be the center with the axes O, at the periphery helically formation propeller blade 4B of rotating shaft 4A, and can be supported in rotatably on the bearing 5,5.End by the helical axis 4A of bearing 5 supports of these screw 4 opposite sides is provided with the drive division 50 that makes screw 4 rotations.
By this drive division 50 is connected in helical axis 4A, screw 4 can rotate around axes O, and the handled thing of supplying with from a side is transported to opposite side.This drive division 50 for example is a motor.
Helical angle and external diameter to the propeller blade 4B of screw 4, can be certain, also can be in the part that is provided with propeller blade 4B, the outer circumference diameter of helical axis 4A keeps constant from an end to the P position range, and becomes big gradually from the external diameter of P position helical axis 4A on filtering bodies 10 other end directions.Thus, make helical axis 4A periphery and and the propeller blade 4B of axes O direction adjacency between the space, the other end is less than an end.In addition, alternative as above-mentioned, make the diameter of helical axis 4A become big method at the other end, also can be by diameter with certain helical axis 4A, and the method that reduces the pitch of propeller blade 4B on the direction that the other end advances gradually reduces above-mentioned space.Perhaps, by increasing the pitch that in the external diameter of other end helical axis 4A, reduces propeller blade 4B, above-mentioned space is diminished at the other end.
Filtering bodies 10 is similar cylindric, and above-mentioned screw is inserted in this filtering bodies 10.Thus, in the process that handled thing is from one end to the other side carried by screw 4, utilize this filtering bodies 10 to dewater, obtain filtration.In addition, be provided with the supply unit 13 of the pipe shape of supplying with handled thing at an end of this filtering bodies 10.
At the outlet 9 of the other end of this filtering bodies 10, the handled thing after filtering is discharged as filter cake.
Counterbalance valve 21 is arranged at outlet 9, and the discharge of control filter cake.This counterbalance valve 21 is circular, can be to the axes O extraterrestrial outlet that is embedded in of advancing and retreat.In addition, the external diameter of this counterbalance valve 21 greater than, discharge filter cake when being used for inserting logical screw 4, thus the internal diameter of the outlet 9 that forms in the end 8 of opposite side, and this counterbalance valve 21 is the circular corresponding outer circumferential side of front end face and forms the conical surface of inclination to the opposite side of screw 4.
In addition, above-mentioned another side at this counterbalance valve 21, be connected and installed in the piston rod 22A of the cylinder 22 of above-mentioned end 8, and pass through, with axes O abreast to a side this piston rod 22A that advances and retreat, and the method that counterbalance valve 21 is advanced and retreat suitably is provided with the interval between this counterbalance valve 21 and the end 8A, can adjust from the discharge rate of the filter cake of outlet 9.Here, by this counterbalance valve 21, the handled thing applied pressure in filtering bodies 10 is called the pressure of counterbalance valve, and the suffered pressure of handled thing in the filtering bodies 10 is called back pressure.
Cylinder 22 is by piston rod 22A, to produce the pressure (pressure of counterbalance valve) that the control handled thing is discharged in counterbalance valve 21.By this cylinder 22 is used as above-mentioned pressing mechanism, can easily control.
Aperture test section 30 is, detect and the end 8A of filtering bodies 10 between distance, and, detect the aperture of outlet 9 and counterbalance valve 21 according to this testing result, and this testing result as counterbalance valve aperture 1, to control part 40 outputs.
Cylinder control part 24 is according to the control signal from control part 40, to be controlled at the pressure that cylinder 22 produces.
Pressure detecting portion 23 is to detect the pressure of the counterbalance valve of counterbalance valve 21 generations, and testing result is exported to control part 40 as back pressure detected value p.Here, look by the handled thing applied pressure of counterbalance valve 21 in filtering bodies 10 and be approximately equal to the suffered pressure of handled thing in the filtering bodies 10, the counterbalance valve pressure that counterbalance valve 21 is produced is as back pressure detected value p, to control part 40 outputs.
Secondly, control part 40 is described.Control part 40 is according to the testing result of aperture test section 30, to cylinder control part 24 output control signals, to make from cylinder 22 to the pressure of counterbalance valve 21 supplies corresponding to aperture.
In addition, control part 40 is performed such control, that is, the product that makes the testing result-valve opening 1 of aperture test section 30 and the testing result of pressure detecting portion 23-back pressure detected value p equals moisture content according to the rules and the dewatered sludge moisture content k that sets, the pressure of increase and decrease counterbalance valve 21.In addition, control part 40 is, is under 0 the situation, in order to reach the pressure of the counterbalance valve of predesignating, to cylinder control part 24 output control signals in valve opening 1.
Here, dewatered sludge moisture content k is to set according to the kind and the desirable moisture content of handled thing.
Below, the relation between the moisture content of the product of aperture and back pressure and filter cake is described with Fig. 2.The figure that concerns between the moisture content of Fig. 2 for the product of expression aperture and back pressure and filter cake.As shown in this Fig, corresponding to aperture and back pressure product, the moisture content of the filter cake relation of being inversely proportional to.For example, fixing back pressure, when strengthening aperture, the water content of the filter cake of discharging from outlet 9 reduces, and is same, fixing back pressure, the moisture content of filter cake rising when reducing aperture.
On the one hand, fixing aperture, when strengthening back pressure, the water content of filter cake reduces, and fixing aperture, when reducing back pressure, the rising of the water content of filter cake.
In addition, draw by experiment, the relation between the moisture content of represented in the figure aperture and the product of back pressure and filter cake does not rely on treating capacity.
Below, the work of the screw pressure type filter with Fig. 1 structure is described with Fig. 1, Fig. 3.Fig. 3 is, is used to illustrate the flow chart of the work of screw pressure type filter.
Propeller type forcing press filter begins dehydration, promptly carries out before the dehydration of handled thing, and the state of counterbalance valve 21 is, with in advance according to the pressure of the counterbalance valve of desirable moisture content regulation when being connected to end 8.
At first, the rotation of drive division 50 reaches propeller blade 4A, supplies with handled thing in order from supply unit 13.
Then, the handled thing by supply unit 13 is supplied with flows into the space that is formed by filtering bodies 10, propeller blade 4B and helical axis 4A, and the rotation by screw 4, be delivered to the other end from an end of filtering bodies 10, simultaneously dwindling by above-mentioned space, slowly dehydration is filtered.Then,, but, do not open outlet 9 because this moment even handled thing arrives the end 8 of filtering bodies 10, thus arrive the handled thing of end 8 be accumulated in outlet 9 near.Then, in the time of from supply unit 13 transport process things, near the back pressure the outlet 9 raises, and further handled thing is filtered.And, pressure from handled thing to the other end of filtering bodies 10 that extrude increases, when back pressure is higher than the pressure of counterbalance valve 21, extrude counterbalance valve 21 from filtering bodies 10, and the handled thing that is filtered is discharged from the outlet between filtering bodies 10 and the counterbalance valve 21 9 as the filter cake with expectation moisture content.
Discharge after the filter cake,, detect the aperture of counterbalance valve 21 by aperture test section 30, and with its testing result as valve opening 1, when being transported to control part 40, the pressure of the counterbalance valve that will detect by pressure detecting portion 23 is transported to control part 40 (step S1) as back pressure detected value p.Control part 40 is to calculate from the valve opening 1 of aperture test section 30 conveyings with from the product between the back pressure detected value p of pressure detecting portion 23 conveyings, and this result of calculation and dewatered sludge moisture content coefficient k are compared.
In result relatively, product between valve opening 1 and back pressure p is during greater than dewatered sludge moisture content coefficient k (step S2), the control signal that control part 40 reduces counterbalance valve pressure to 24 outputs of cylinder control part, back pressure is equaled corresponding to the back pressure that has valve opening 1 now, that is, make it equal the back pressure (step 3) that calculates according to dewatered sludge moisture content coefficient k and valve opening 1.Cylinder control part 24 is, according to the control signal from control part 40 outputs, control cylinder 22 reduces the pressure of counterbalance valve.
Thus, even with the supply of handled thing, it is big that the aperture of counterbalance valve 21 becomes, but the reduction of control counterbalance valve pressure makes handled thing reach certain moisture content,, and, make the moisture content of the filter cake of discharge keep constant by said method.
Here, when the quantity delivered of the handled thing of supplying with from supply unit 13 is one regularly, becomes in the ratio between the discharge rate of the quantity delivered of handled thing and filter cake on the position of that certain aperture valve 1 constantly and keep counterbalance valve 21.
Then, if the quantity delivered of the handled thing of supplying with from supply unit 13 increases, the handled thing amount of carrying by screw 4 also increases, and also becomes big to the pressure that outlet 9 is extruded handled thing.In addition, if pressure from handled thing to outlet 9 that extrude becomes big, the back pressure of the handled thing in the filtering bodies 10 rises.In addition, if back pressure greater than the pressure of counterbalance valve 21, by back pressure, to extruding counterbalance valve 21 away from the direction of outlet 9, makes valve opening 1 become big.
At this moment, control part 40 is, read valve opening 1 of carrying from aperture test section 30 and the back pressure detected value p (step S1) that carries from pressure efferent 23, and calculate the product between this valve opening of reading 1 and the back pressure detected value p, and result of calculation and dewatered sludge moisture content coefficient k are compared.At this moment, because valve opening 1 becomes big, so can detect result of calculation greater than dewatered sludge moisture content coefficient k (step S2).
If detect result of calculation greater than dewatered sludge moisture content coefficient k, the control signal that control part 40 reduces counterbalance valve pressure to 24 outputs of cylinder control part, back pressure is become corresponding to the back pressure that has valve opening 1 now, that is, equal the back pressure (step 3) that calculates according to dewatered sludge moisture content coefficient k and valve opening 1.
Thus, correspondingly big even the aperture of counterbalance valve 21 becomes if increase the quantity delivered of handled thing, control makes the pressure of counterbalance valve reduce, and obtains certain water content, and by said method, makes the moisture content of the filter cake of discharge keep constant.
Then, if reduce the quantity delivered of the handled thing of supplying with from supply unit 13, in the time of the handled thing amount minimizing of carrying by screw 4, pressure from handled thing to outlet 9 that extrude also reduces.In addition, if pressure from handled thing to outlet 9 that extrude reduces, the back pressure of the handled thing in the filtering bodies 10 also reduces, and thus, if back pressure less than the pressure of counterbalance valve 21, counterbalance valve 21 is subjected to the pressure of piston rod 22A, counterbalance valve 21 is squeezed get back to the direction that approaches outlet, valve opening 1 diminishes.
At this moment, control part 40 is read valve opening 1 of carrying from aperture test section 30 and the back pressure detected value p (step S1) that carries from pressure efferent 23, calculate the product between this valve opening of reading 1 and the back pressure detected value p, and result of calculation and dewatered sludge moisture content coefficient k are compared.At this moment, because counterbalance valve 21 squeezes back to the direction that approaches outlet, valve opening 1 diminishes, and thus, can detect result of calculation less than dewatered sludge moisture content coefficient k (step S4).
If detect result of calculation less than dewatered sludge moisture content coefficient k, the control signal that control part 40 increases counterbalance valve pressure to 24 outputs of cylinder control part, back pressure is equaled corresponding to the back pressure that has valve opening 1 now, that is, equal the back pressure (step 5) that calculates according to dewatered sludge moisture content coefficient k and valve opening 1.
Thus, with the minimizing of the quantity delivered of handled thing, even the aperture of counterbalance valve 21 diminishes, but increase counterbalance valve pressure, reach certain water content ground and control, and thus, it is constant that the moisture content of the filter cake of discharge keeps.
As implied above, according to the foregoing description, because can make the moisture content of filter cake keep certain, when utilizing the handled thing of discharging to make goods, can prevent from goods, to produce uneven phenomenon, in addition, when burning the fuel of discharging, because can make the moisture content of handled thing keep constant, thereby can control easily, the quantity delivered of the fuel in burning disposal thus, can be simplified post processing.
In addition, use air pump to be illustrated as the situation of the pressing mechanism of the foregoing description, but, also can use air pump mechanism in addition to the counterbalance valve supply pressure.
In addition, in the above-described embodiment, control part 40 is that the situation of controlling as follows illustrates, promptly, the pressure of increase and decrease counterbalance valve 21, make the product of valve opening 1 and detected value p equal dewatered sludge moisture content coefficient k, and in advance the aperture of setting according to the kind or the desirable moisture content of handled thing-setting aperture a is remembered control part 40.And, control part 40 also can be exported control signals to the cylinder control part 24 of cylinder 22 in the following manner, promptly, valve opening 1 and remember the setting aperture a of control part 40 in advance relatively, when valve opening 1 is bigger than setting valve degree a, reduce the pressure of supplying with counterbalance valve 21, and work as valve opening 1 than setting valve degree a hour, the pressure of the counterbalance valve 21 of increasing supply.
In addition, also can export control signals to the cylinder control part 24 of cylinder 22 in the following manner, promptly, set aperture higher limit b and aperture lower limit c as above-mentioned setting aperture a, when the opening ratio aperture higher limit b of counterbalance valve 21 is big, the pressure that reduction is supplied with to counterbalance valve 21, and, increase the pressure of supplying with to counterbalance valve 21 when the opening ratio aperture higher limit of counterbalance valve 21 b hour.
In addition also can, by being used for realizing, the control part 40 in Fig. 1, cylinder control part 24 functional programs record in the record carrier that computer can understand, and the program that is write down by this record carrier is read in computer system, carry out dehydration procedure.In addition, said here " computer system " is to comprise hardware such as OS or surrounding devices.
In addition, " record carrier that computer can be understood " is meant, floppy disk, CD, ROM, CD-ROM etc. can remove medium and be installed on the memory storages such as hard disk of computer system.In addition, " record carrier that computer can be understood " also comprises, as send the communication line of program by communication lines such as network such as internet or telephone wires, short time dynamically keeps the device of program and as the volatile memory of the inside computer system of being made up of service station or client under this situation, keeps the device of certain hour program.In addition, said procedure is, can be used to realize the part of above-mentioned functions, even also can realize above-mentioned functions by the combination of the program that write down by computer system.
More than, with reference to accompanying drawing, describe embodiments of the invention in detail, but concrete structure is not limited to this embodiment, be also included within the design etc. in the scope that does not break away from aim of the present invention.
As mentioned above, according to the present invention, at the outlet of the other end of filtering bodies control is set and discharges the counterbalance valve that filters the post processing thing, and the aperture of detection outlet and counterbalance valve, the control counterbalance valve, make it equal pressure corresponding to detected aperture, so, the effect of the moisture content that can keep constant handled thing of discharging from outlet had.In addition, because moisture content that can the constant process thing, thus character that also can the constant process thing, and can simplify post processing.
In addition, according to the present invention, pressure-detecting device is set, be used to detect the pressure that pressue device is supplied with counterbalance valve, and because the pressure of control counterbalance valve, make the result of aperture testing result device detection and the detected result's of pressure-detecting device product reach the value of regulation, thus can more accurately reach the constant moisture content of handled thing, and have the effect that can compatibly keep discharge function.
Claims (4)
1, a kind of screw pressure type filter, inboard in cylindric filtering bodies can be inserted screw rotatably, and the rotation by this screw, the handled thing of supplying with to above-mentioned filtering bodies from an end of above-mentioned screw, be transported to the other end, filter by above-mentioned filtering bodies simultaneously, it is characterized in that, described screw pressure type filter has, the counterbalance valve that is arranged on the outlet of the other end of above-mentioned filtering bodies and the discharge of the handled thing after filtering is controlled; Supply with the pressing mechanism of the pressure of the above-mentioned handled thing discharge of control to above-mentioned counterbalance valve; Detect the aperture testing agency of above-mentioned outlet and above-mentioned counterbalance valve aperture; According to the testing result of aperture testing agency, control above-mentioned pressing mechanism, make controlling organization corresponding to the above-mentioned counterbalance valve of pressure feed of above-mentioned aperture; With detect above-mentioned pressing mechanism and supply with the pressure detecting mechanism of the pressure of above-mentioned counterbalance valve, above-mentioned controlling organization is, control the pressure of above-mentioned counterbalance valve, the value that makes the product of the testing result of the testing result of above-mentioned aperture testing agency and above-mentioned pressure detecting mechanism equal to stipulate.
2, screw pressure type filter according to claim 1, it is characterized in that, above-mentioned controlling organization is, result according to the detection of above-mentioned testing agency, setting aperture when above, reduce the pressure of supplying with to above-mentioned counterbalance valve in the aperture of above-mentioned counterbalance valve, and when the aperture of above-mentioned counterbalance valve when the setting aperture is following, the pressure that increase is supplied with to above-mentioned counterbalance valve, and control above-mentioned pressing mechanism by above method.
3, screw pressure type filter according to claim 1 and 2 is characterized in that, above-mentioned pressing mechanism is a cylinder.
4, a kind of filter method in screw pressure type filter, inboard in filtering bodies cylindraceous can be inserted screw rotatably, and the rotation by this screw, the handled thing that to supply with to above-mentioned filtering bodies from an end of above-mentioned screw, be transported to the other end, filter with above-mentioned filtering bodies simultaneously, it is characterized in that, the discharge of controlled filter post processing thing by the counterbalance valve that is arranged at above-mentioned filtering bodies opposite side outlet, detect the aperture of above-mentioned outlet and above-mentioned counterbalance valve, detect above-mentioned pressing mechanism and supply with the pressure of above-mentioned counterbalance valve, and control the pressure of above-mentioned counterbalance valve, the value that makes the product of the testing result of the testing result of above-mentioned aperture testing agency and above-mentioned pressure detecting mechanism equal to stipulate.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001002623A JP3576492B2 (en) | 2001-01-10 | 2001-01-10 | Screw press type filtration device |
| US10/185,581 US20040000509A1 (en) | 2001-01-10 | 2002-06-28 | Screw pressing type filtering apparatus |
| CN 02141191 CN1233440C (en) | 2002-07-08 | 2002-07-08 | Propeller pressure type filter equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02141191 CN1233440C (en) | 2002-07-08 | 2002-07-08 | Propeller pressure type filter equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1467012A CN1467012A (en) | 2004-01-14 |
| CN1233440C true CN1233440C (en) | 2005-12-28 |
Family
ID=34147738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02141191 Expired - Lifetime CN1233440C (en) | 2001-01-10 | 2002-07-08 | Propeller pressure type filter equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1233440C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102949877A (en) * | 2011-08-24 | 2013-03-06 | 江苏洁净环境科技有限公司 | Waste oil cleaning machine |
| CN104879514B (en) * | 2015-04-27 | 2017-05-10 | 上海同臣环保有限公司 | Sludge discharge adjusting valve |
| CN108995273A (en) * | 2018-08-29 | 2018-12-14 | 陕西云沃环保科技有限公司 | Kitchen garbage spiral extrusion separator step by step |
| CN109534419A (en) * | 2018-12-25 | 2019-03-29 | 南昌航空大学 | A kind of effluent filter of efficient removal ammonia nitrogen |
-
2002
- 2002-07-08 CN CN 02141191 patent/CN1233440C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CN1467012A (en) | 2004-01-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1242879C (en) | Screw press | |
| CN1676307A (en) | Conical twin-screw extruder and dehydrator | |
| CN1112523A (en) | Sludge dehydrating press and method for treating sludge | |
| CN108585432B (en) | Integrated screw press sludge dewatering machine | |
| CN1233440C (en) | Propeller pressure type filter equipment | |
| JP2018158309A (en) | Centrifugal dehydrator | |
| CN114988661B (en) | Sewage treatment equipment for sludge dewatering | |
| CN211366286U (en) | Prevent material loading machine of jam | |
| CN206318850U (en) | The variable inorganic sludge concentration and dewatering all-in-one of gap | |
| CN116553800A (en) | Sludge dewatering and drying treatment equipment and treatment method | |
| CN1551825A (en) | Press for dehumidifying moist material, in particular residual waste | |
| CN112358151A (en) | Silt collection device for river channel dredging | |
| CN106621522A (en) | Vacuum spiral dewatering device | |
| US20040000509A1 (en) | Screw pressing type filtering apparatus | |
| CN219297355U (en) | Sludge dewatering pretreatment mechanism | |
| CN210193648U (en) | Sludge dewatering device for sewage treatment | |
| JP2807867B2 (en) | Screw type pressurized waste mud solid-liquid separator | |
| CN209869475U (en) | Rubbish preprocessor equipment with screw extrusion mechanism | |
| CN206535280U (en) | A kind of vacuum screw dehydration device | |
| CN210238621U (en) | Dredging device for hydraulic engineering | |
| CN106242227A (en) | Variable gap inorganic sludge concentration and dewatering all-in-one | |
| CN210560022U (en) | Novel sludge distributing device | |
| CN211620338U (en) | Sludge solid-liquid separation device | |
| JP3124997B2 (en) | Screen residue dewatering device | |
| JP3142466B2 (en) | Screw dehydrator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20051228 |
|
| CX01 | Expiry of patent term |