CN110652779A

CN110652779A - Plate-and-frame filter press for wastewater treatment

Info

Publication number: CN110652779A
Application number: CN201911138493.4A
Authority: CN
Inventors: 苏子战; 史晓勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-20
Filing date: 2019-11-20
Publication date: 2020-01-07

Abstract

The invention discloses a plate-and-frame filter press for wastewater treatment, which comprises a pretreatment tank and a liquid collection tank A, the device comprises a liquid collecting box B, a first cross beam and a second cross beam, wherein the upper part of the inner wall of the left side of a pretreatment box is connected with a guide plate, the upper end of the guide plate is connected with a hook, an output shaft of a motor A arranged in the middle of the left end of the pretreatment box is connected with a stirring shaft A, an output shaft of a motor B arranged on the lower part of the right end of the pretreatment box is connected with a stirring shaft B, a connecting rod and a thrust plate are fixedly connected between the first cross beam and the second cross beam, the upper ends of the first cross beam and the second cross beam are connected with filter plates in a sliding manner, the free end of a piston rod of a hydraulic cylinder arranged at the upper end of the connecting rod is connected with the right end of a compression plate, the front end of the first cross beam; the invention has the advantages of pretreatment of sewage, regular cleaning of the filter plate, good treatment effect and low cost.

Description

Plate-and-frame filter press for wastewater treatment

Technical Field

The invention belongs to the technical field of wastewater treatment, and particularly relates to a plate-and-frame filter press for wastewater treatment.

Background

The plate-and-frame filter press is equipment for realizing solid-liquid separation in industrial production, and is applied to sewage treatment processes in various industries, wherein flocculent impurities in sewage influence feeding of the plate-and-frame filter press, and sewage is unevenly distributed to reduce the filter pressing effect; therefore, it is urgently needed to design a plate and frame filter press for wastewater treatment, which is used for pretreating sewage, pre-separating flocculent impurities, performing filter-pressing separation on the sewage uniformly stirred, uniformly performing filter-pressing, and transferring separated filter cakes in time, filtering and recycling separated filtrate, improving the resource utilization rate, reducing the treatment cost, cleaning the filter plates, improving the filter-pressing effect, prolonging the service life of the filter plates, and having strong applicability.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a plate-and-frame filter press for wastewater treatment, which is used for pretreating wastewater, uniformly filter-pressing and timely transferring separated filter cakes, filtering and recycling separated filtrate, reducing the treatment cost, cleaning filter plates, improving the filter-pressing effect and prolonging the service life of the filter plates.

The purpose of the invention is realized as follows: a plate-and-frame filter press for wastewater treatment comprises a pretreatment tank, a liquid collection tank A, a liquid collection tank B, a first cross beam and a second cross beam, wherein the upper end of the pretreatment tank is connected with a tank cover, the left side of the upper end of the tank cover is provided with a liquid inlet, the upper part of the inner wall of the left side of the pretreatment tank is fixedly connected with a guide plate, the upper end of the guide plate is fixedly connected with a hook, the middle part of the left end of the pretreatment tank is fixedly provided with a motor A, the output shaft of the motor A is connected with a stirring shaft A, the right end of the stirring shaft A is connected with the inner wall of the right side of the pretreatment tank through a bearing, the lower part of the right end of the pretreatment tank is fixedly provided with a motor B, the output shaft of the motor B is connected with a stirring shaft B, the left end of the stirring shaft, the lower extreme left and right sides of first crossbeam and second crossbeam all fixed mounting have the supporting leg, first crossbeam and second crossbeam between fixedly connected with connecting rod and thrust plate, first crossbeam and second crossbeam upper end sliding connection have the filter plate, the filter plate be located thrust plate right side, the filter plate around both ends upper portion all fixedly connected with connecting plate, the connecting plate lower extreme install the walking wheel, walking wheel and first crossbeam and second crossbeam upper end sliding connection, the filter plate right side be provided with the pressure strip, pressure strip front end and first crossbeam rear end sliding connection, pressure strip rear end and second crossbeam front end sliding connection, connecting rod upper end fixed mounting have the pneumatic cylinder, the free end and the pressure strip right-hand member middle part fixed connection of the piston rod of pneumatic cylinder, first crossbeam front end and second crossbeam rear end fixed connection have the support, the support is characterized in that a fixed plate is fixedly connected to the upper end of the support, a liquid separator is fixedly connected to the lower end of the fixed plate, nozzles are uniformly arranged at the lower end of the liquid separator, the nozzles are located above the filter plate, liquid inlet holes are formed in the middle parts of the connecting rod, the thrust plate and the filter plate, liquid outlet holes A are formed in the four corners of the thrust plate and the filter plate, the liquid inlet holes are connected with the lower part of the right end of the pretreatment tank through liquid inlet pipes, a liquid suction pump A is arranged on the liquid inlet pipes, the liquid outlet holes A are connected with the upper end of a liquid collection tank B through liquid outlet pipes, a filter screen A and a filter screen B are sequentially arranged in the liquid collection tank B from top to bottom, a liquid suction pipe is connected to the lower part of the left end of the liquid collection tank B, a liquid suction pump B is arranged on the liquid suction pipe, the other end of, the material collecting groove is arranged in a left-low-right high-inclination mode, baffles are fixedly connected to the front end, the rear end and the right end of the material collecting groove respectively, a liquid outlet hole B is formed in the material collecting groove, a material collecting box is arranged below the left end of the material collecting groove, and a liquid collecting box A is arranged below the material collecting groove.

The guide plate is obliquely arranged in a left-high-right direction.

The box cover and the pretreatment box are detachably connected.

The directions of rotation of the stirring shaft A and the stirring shaft B are opposite.

The filter screen A and the filter screen B are detachably connected with the liquid collecting box B.

The diameter of the filter hole of the filter screen A is larger than that of the filter hole of the filter screen B.

The liquid outlet holes B are uniformly distributed on the material collecting groove.

The invention has the following beneficial effects: the invention discloses a plate-and-frame filter press for wastewater treatment, which comprises the following steps that firstly, sewage to be treated enters a pretreatment box through a liquid inlet, flocculent impurities in the sewage are hooked by a hook connected to the upper end of a guide plate in the downward flowing process of the sewage, the flocculent impurities are separated through the hook, a motor A and a motor B are started, spiral stirring blades arranged on a stirring shaft A and a stirring shaft B stir the sewage, so that the sewage is uniformly distributed, the rotation directions of the stirring shaft A and the stirring shaft B are opposite, and the sewage forms a vortex between the stirring shaft A and the stirring shaft B, so that the stirring effect is improved; then, the liquid pump A is opened, sewage which is uniformly stirred is fed into the filter plate through the liquid inlet pipe under the action of the liquid pump A, the hydraulic cylinder is opened, the piston rod of the hydraulic cylinder extends to drive the pressing plate to move leftwards, the sewage forms a filter cake in a filter chamber of the filter plate, the filter cake is uniformly formed through uniform filter pressing, filtrate separated in the filter pressing process flows into the liquid collecting box B through the liquid outlet pipe, the filter screen A and the filter screen B in the liquid collecting box B re-filter the filtrate, the diameter of a filter hole of the filter screen A is larger than that of the filter hole of the filter screen B, and the filter effect is improved through graded filtration; after filter pressing is completed, the hydraulic cylinder drives the piston rod to contract, the piston rod drives the pressing plate to move rightwards, the filter plate can be pushed manually to move rightwards on the first cross beam and the second cross beam, the pressing plate can also drive the filter plate to move rightwards on the first cross beam and the second cross beam by arranging the elastic connecting part on the front end surfaces of the thrust plate, the filter plate and the pressing plate, a filter cake formed in the filter chamber falls onto the collecting groove, the collecting groove is obliquely arranged in a manner of being low at the left side and high at the right side, the filter cake slides into a collecting box arranged below the left end of the collecting groove through the collecting groove, the separated filter cake is transferred in time, the filter pressing efficiency is improved, and the front end, the rear end and the right end of the collecting groove are fixedly connected with baffle plates to prevent the;

when the plate-and-frame filter press is used for a period of time, the liquid suction pump B is opened, the filtered filtrate in the liquid collection tank B enters the liquid separator through the liquid suction pipe, the nozzles uniformly arranged at the lower end of the liquid separator spray liquid to the filter plate to wash the filter plate, so that the residual impurities on the filter plate are washed off and flow to the material collection tank along with the filtrate, the material collection tank is provided with a liquid outlet hole B, the impurities flow to the liquid collection tank A below the material collection tank along with the filtrate through the liquid outlet hole B, the filter plate is periodically cleaned, the filter pressing effect can be improved, the service life of the filter plate can be prolonged, the separated filtrate is filtered and recycled, the resource utilization rate is improved, and the treatment cost is;

the box cover is detachably connected with the pretreatment box, so that the pretreatment box can be conveniently opened to clean flocculent impurities hooked on the hook, and the pretreatment effect is improved; the filter screen A, the filter screen B and the liquid collecting box B are detachably connected, so that the filter screen A and the filter screen B are convenient to disassemble and replace, and the filter effect is prevented from being reduced due to the fact that the filter screen A and the filter screen B are blocked due to long filter time;

in summary, the invention has the advantages of pretreating sewage, uniformly filter-pressing, timely transferring separated filter cakes, filtering and recycling separated filtrate, reducing treatment cost, cleaning filter plates, improving filter-pressing effect and prolonging service life of the filter plates.

Drawings

Fig. 1 is a schematic structural diagram of a plate-and-frame filter press for wastewater treatment according to the present invention.

Fig. 2 is a left side view of fig. 1 with the pretreatment tank and the header tank B removed.

Fig. 3 is a top view of fig. 2 with the stent removed.

Fig. 4 is a schematic structural diagram of a filter plate in a plate-and-frame filter press for wastewater treatment according to the present invention.

In the figure: 1. the device comprises a liquid collecting box A2, a material collecting groove 3, supporting legs 4, a material collecting box 5, a liquid collecting box B6, a liquid pump A7, a motor B8, a pretreatment box 9, a spiral stirring blade 10, a stirring shaft B11, a motor A12, a stirring shaft A13, a hook 14, a liquid inlet 15, a box cover 16, a guide plate 17, a liquid pump B18, a liquid inlet pipe 19, a filter screen B20, a filter screen A21, a liquid pumping pipe 22, a liquid outlet pipe 23, a thrust plate 24, a filter plate 25, a fixing plate 26, a liquid distributor 27, a nozzle 28, a pressure plate 29, a support 30, a piston rod 31, a hydraulic cylinder 32, a first cross beam 33, a connecting plate 34, a travelling wheel 35, a second cross beam 36, a liquid outlet hole A37, a liquid inlet hole 38.

Detailed Description

Example 1

As shown in fig. 1-4, a plate-and-frame filter press for wastewater treatment comprises a pretreatment tank 8, a liquid collection tank a1, a liquid collection tank B5, a first beam 32 and a second beam 35, wherein the upper end of the pretreatment tank 8 is connected with a tank cover 15, a liquid inlet 14 is arranged on the left side of the upper end of the tank cover 15, a guide plate 16 is fixedly connected to the upper part of the inner wall of the left side of the pretreatment tank 8, a hook 13 is fixedly connected to the upper end of the guide plate 16, a motor a11 is fixedly installed in the middle of the left end of the pretreatment tank 8, an output shaft of a motor a11 is connected with a stirring shaft a12, the right end of the stirring shaft a12 is connected with the inner wall of the right side of the pretreatment tank 8 through a bearing, a motor B7 is fixedly installed on the lower part of the right end of the pretreatment tank 8, an output shaft of a motor B7 is connected with a stirring shaft B10, (mixing) shaft A12 and (mixing) shaft B10 on equal fixed mounting have spiral stirring leaf 9, the equal fixed mounting in lower extreme left and right sides of first crossbeam 32 and second crossbeam 35 have supporting leg 3, first crossbeam 32 and second crossbeam 35 between fixed connection have connecting rod 38 and thrust plate 23, first crossbeam 32 and second crossbeam 35 upper end sliding connection have filter plate 24, filter plate 24 be located thrust plate 23 right side, filter plate 24 around the equal fixedly connected with connecting plate 33 in both ends upper portion, connecting plate 33 lower extreme install walking wheel 34, walking wheel 34 and first crossbeam 32 and second crossbeam 35 upper end sliding connection, filter plate 24 right side be provided with pressure strip 28, pressure strip 28 front end and first crossbeam 32 rear end sliding connection, pressure strip 28 rear end and second crossbeam 35 front end sliding connection, connecting rod 38 upper end fixed mounting have pneumatic cylinder 31, free end and the 28 right-hand member middle part fixed connection of pressure strip of the piston rod 30 of pneumatic cylinder 31, first crossbeam 32 front end and second crossbeam 35 rear end fixed connection have support 29, support 29 upper end fixedly connected with fixed plate 25, fixed plate 25 lower extreme fixedly connected with knockout 26, knockout 26 lower extreme evenly install nozzle 27, nozzle 27 be located filter plate 24 top, connecting rod 38, thrust plate 23 and filter plate 24 middle part all be provided with feed liquor hole 37, thrust plate 23 and filter plate 24's four corners all be provided with drain hole A36, feed liquor hole 37 pass through feed liquor pipe 18 and pretreatment tank 8's right-hand member lower part and link to each other, feed liquor pipe 18 on install drawing liquid pump A6, drain hole A36 pass through drain pipe 22 and collection liquid tank B5 upper end and link to each other, collection liquid tank B5 in from top to bottom install filter screen A20 and filter screen B19 in proper order, liquid collection box B5 left end sub-unit connection have liquid suction pipe 21, liquid suction pipe 21 on install drawing liquid pump B17, the other end of drawing liquid pipe 21 run through fixed plate 25 and be linked together with knockout 26 upper end, supporting leg 3 between fixedly connected with collection silo 2, collection silo 2 be the high inclined setting in the low right side in a left side, collection silo 2 around both ends and the equal fixedly connected with baffle 29 of right-hand member, collection silo 2 on be provided with liquid outlet B40, 2 left end below in collection silo be provided with collection case 4, collection silo 2 below be provided with collection liquid tank A1.

Firstly, sewage to be treated enters a pretreatment tank through a liquid inlet, flocculent impurities in the sewage are hooked by a hook connected to the upper end of a guide plate in the downward flowing process of the sewage, the flocculent impurities are separated through the hook, a motor A and a motor B are started, and spiral stirring blades arranged on a stirring shaft A and a stirring shaft B stir the sewage to ensure that the sewage is uniformly distributed; then, the liquid pump A is opened, sewage which is uniformly stirred is fed into the filter plate through the liquid inlet pipe under the action of the liquid pump A, the hydraulic cylinder is opened, the piston rod of the hydraulic cylinder extends to drive the pressing plate to move leftwards, the sewage forms a filter cake in the filter chamber of the filter plate, the filter cake is uniformly formed through uniform filter pressing, filtrate separated in the filter pressing process flows into the liquid collecting box B through the liquid outlet pipe, and the filter screen A and the filter screen B in the liquid collecting box B perform refiltering on the filtrate, so that the filtering effect is improved; after filter pressing is completed, the hydraulic cylinder drives the piston rod to contract, the piston rod drives the pressing plate to move rightwards, the filter plate can be pushed manually to move rightwards on the first cross beam and the second cross beam, the pressing plate can also drive the filter plate to move rightwards on the first cross beam and the second cross beam by arranging the elastic connecting part on the front end surfaces of the thrust plate, the filter plate and the pressing plate, a filter cake formed in the filter chamber falls onto the collecting groove, the collecting groove is obliquely arranged in a manner of being low at the left side and high at the right side, the filter cake slides into a collecting box arranged below the left end of the collecting groove through the collecting groove, the separated filter cake is transferred in time, the filter pressing efficiency is improved, and the front end, the rear end and the right end of the collecting groove are fixedly connected with baffle plates to prevent the; after the plate-and-frame filter press is used for a period of time, a liquid suction pump B is opened, filtered filtrate in a liquid collection tank B enters a liquid separator through a liquid suction pipe, nozzles uniformly installed at the lower end of the liquid separator spray the filter plates to wash the filter plates, residual impurities on the filter plates are washed off and flow to a material collection tank along with the filtrate, a liquid outlet hole B is formed in the material collection tank, the impurities flow to the liquid collection tank A below the material collection tank along with the filtrate through the liquid outlet hole B, the filter plates are periodically cleaned, the filter pressing effect can be improved, the service life of the filter plates can be prolonged, the separated filtrate is filtered and recycled, the resource utilization rate is improved, and the treatment cost is reduced.

Example 2

As shown in fig. 1-4, a plate-and-frame filter press for wastewater treatment comprises a pretreatment tank 8, a liquid collection tank a1, a liquid collection tank B5, a first beam 32 and a second beam 35, wherein the upper end of the pretreatment tank 8 is connected with a tank cover 15, a liquid inlet 14 is arranged on the left side of the upper end of the tank cover 15, a guide plate 16 is fixedly connected to the upper part of the inner wall of the left side of the pretreatment tank 8, a hook 13 is fixedly connected to the upper end of the guide plate 16, a motor a11 is fixedly installed in the middle of the left end of the pretreatment tank 8, an output shaft of a motor a11 is connected with a stirring shaft a12, the right end of the stirring shaft a12 is connected with the inner wall of the right side of the pretreatment tank 8 through a bearing, a motor B7 is fixedly installed on the lower part of the right end of the pretreatment tank 8, an output shaft of a motor B7 is connected with a stirring shaft B10, (mixing) shaft A12 and (mixing) shaft B10 on equal fixed mounting have spiral stirring leaf 9, the equal fixed mounting in lower extreme left and right sides of first crossbeam 32 and second crossbeam 35 have supporting leg 3, first crossbeam 32 and second crossbeam 35 between fixed connection have connecting rod 38 and thrust plate 23, first crossbeam 32 and second crossbeam 35 upper end sliding connection have filter plate 24, filter plate 24 be located thrust plate 23 right side, filter plate 24 around the equal fixedly connected with connecting plate 33 in both ends upper portion, connecting plate 33 lower extreme install walking wheel 34, walking wheel 34 and first crossbeam 32 and second crossbeam 35 upper end sliding connection, filter plate 24 right side be provided with pressure strip 28, pressure strip 28 front end and first crossbeam 32 rear end sliding connection, pressure strip 28 rear end and second crossbeam 35 front end sliding connection, connecting rod 38 upper end fixed mounting have pneumatic cylinder 31, free end and the 28 right-hand member middle part fixed connection of pressure strip of the piston rod 30 of pneumatic cylinder 31, first crossbeam 32 front end and second crossbeam 35 rear end fixed connection have support 29, support 29 upper end fixedly connected with fixed plate 25, fixed plate 25 lower extreme fixedly connected with knockout 26, knockout 26 lower extreme evenly install nozzle 27, nozzle 27 be located filter plate 24 top, connecting rod 38, thrust plate 23 and filter plate 24 middle part all be provided with feed liquor hole 37, thrust plate 23 and filter plate 24's four corners all be provided with drain hole A36, feed liquor hole 37 pass through feed liquor pipe 18 and pretreatment tank 8's right-hand member lower part and link to each other, feed liquor pipe 18 on install drawing liquid pump A6, drain hole A36 pass through drain pipe 22 and collection liquid tank B5 upper end and link to each other, collection liquid tank B5 in from top to bottom install filter screen A20 and filter screen B19 in proper order, the lower part of the left end of the liquid collecting tank B5 is connected with a liquid pumping pipe 21, the liquid pumping pipe 21 is provided with a liquid pumping pump B17, the other end of the liquid pumping pipe 21 penetrates through a fixing plate 25 and is communicated with the upper end of a liquid distributor 26, a material collecting groove 2 is fixedly connected between the supporting legs 3, the material collecting groove 2 is arranged in a left-low right inclined type, the front end, the rear end and the right end of the material collecting groove 2 are fixedly connected with baffle plates 29, the material collecting groove 2 is provided with a liquid outlet hole B40, a material collecting tank 4 is arranged below the left end of the material collecting groove 2, a liquid collecting tank A1 is arranged below the material collecting groove 2, the guide plate 16 is arranged in a left-high right inclined type, the tank cover 15 is detachably connected with the pretreatment tank 8, the turning directions of the stirring shaft A12 and the stirring shaft B10 are opposite, and the filter screen A20 and the filter screen B19 are detachably connected with the liquid collecting, the diameter of the filter holes of the filter screen A20 is larger than that of the filter holes of the filter screen B19, and the liquid outlet holes B40 are uniformly distributed on the material collecting groove 2.

Firstly, sewage to be treated enters a pretreatment tank through a liquid inlet, flocculent impurities in the sewage are hooked by a hook connected with the upper end of a guide plate in the downward flowing process of the sewage, the flocculent impurities are separated through the hook, a motor A and a motor B are started, spiral stirring blades arranged on a stirring shaft A and a stirring shaft B stir the sewage, so that the sewage is uniformly distributed, the rotation directions of the stirring shaft A and the stirring shaft B are opposite, and the sewage forms a vortex between the stirring shaft A and the stirring shaft B, so that the stirring effect is improved; then, the liquid pump A is opened, sewage which is uniformly stirred is fed into the filter plate through the liquid inlet pipe under the action of the liquid pump A, the hydraulic cylinder is opened, the piston rod of the hydraulic cylinder extends to drive the pressing plate to move leftwards, the sewage forms a filter cake in a filter chamber of the filter plate, the filter cake is uniformly formed through uniform filter pressing, filtrate separated in the filter pressing process flows into the liquid collecting box B through the liquid outlet pipe, the filter screen A and the filter screen B in the liquid collecting box B re-filter the filtrate, the diameter of a filter hole of the filter screen A is larger than that of the filter hole of the filter screen B, and the filter effect is improved through graded filtration; after filter pressing is completed, the hydraulic cylinder drives the piston rod to contract, the piston rod drives the pressing plate to move rightwards, the filter plate can be pushed manually to move rightwards on the first cross beam and the second cross beam, the pressing plate can also drive the filter plate to move rightwards on the first cross beam and the second cross beam by arranging the elastic connecting part on the front end surfaces of the thrust plate, the filter plate and the pressing plate, a filter cake formed in the filter chamber falls onto the collecting groove, the collecting groove is obliquely arranged in a manner of being low at the left side and high at the right side, the filter cake slides into a collecting box arranged below the left end of the collecting groove through the collecting groove, the separated filter cake is transferred in time, the filter pressing efficiency is improved, and the front end, the rear end and the right end of the collecting groove are fixedly connected with baffle plates to prevent the; when the plate-and-frame filter press is used for a period of time, the liquid suction pump B is opened, the filtered filtrate in the liquid collection tank B enters the liquid separator through the liquid suction pipe, the nozzles uniformly arranged at the lower end of the liquid separator spray liquid to the filter plate to wash the filter plate, so that the residual impurities on the filter plate are washed off and flow to the material collection tank along with the filtrate, the material collection tank is provided with a liquid outlet hole B, the impurities flow to the liquid collection tank A below the material collection tank along with the filtrate through the liquid outlet hole B, the filter plate is periodically cleaned, the filter pressing effect can be improved, the service life of the filter plate can be prolonged, the separated filtrate is filtered and recycled, the resource utilization rate is improved, and the treatment cost is; the box cover is detachably connected with the pretreatment box, so that the pretreatment box can be conveniently opened to clean flocculent impurities hooked on the hook, and the pretreatment effect is improved; the filter screen A, the filter screen B and the liquid collecting box B are detachably connected, so that the filter screen A and the filter screen B are convenient to disassemble and replace, and the filter effect is prevented from being reduced due to the fact that the filter screen A and the filter screen B are blocked due to long filter time; in summary, the invention has the advantages of pretreating sewage, uniformly filter-pressing, timely transferring separated filter cakes, filtering and recycling separated filtrate, reducing treatment cost, cleaning filter plates, improving filter-pressing effect and prolonging service life of the filter plates.

Claims

1. The utility model provides a filter press for waste water treatment, it includes pretreatment tank, collection liquid tank A, collection liquid tank B, first crossbeam and second crossbeam, its characterized in that: the pretreatment tank upper end is connected with a tank cover, the tank cover upper end left side is provided with a liquid inlet, the pretreatment tank left side inner wall upper portion is fixedly connected with a guide plate, the guide plate upper end is fixedly connected with a hook, the pretreatment tank left end middle portion is fixedly provided with a motor A, an output shaft of the motor A is connected with a stirring shaft A, the right end of the stirring shaft A is connected with the pretreatment tank right side inner wall through a bearing, the pretreatment tank right end lower portion is fixedly provided with a motor B, an output shaft of the motor B is connected with a stirring shaft B, the left end of the stirring shaft B is connected with the pretreatment tank left side inner wall through a bearing, the stirring shaft A and the stirring shaft B are both fixedly provided with a spiral stirring blade, the left side and the right side of the lower ends of the first cross beam and the second cross beam are both fixedly provided with supporting legs, and the first cross beam and the, the upper ends of the first cross beam and the second cross beam are slidably connected with filter plates, the filter plates are positioned on the right side of the thrust plate, the upper parts of the front and the rear ends of the filter plates are fixedly connected with connecting plates, the lower ends of the connecting plates are provided with walking wheels, the walking wheels are slidably connected with the upper ends of the first cross beam and the second cross beam, the right side of the filter plates is provided with a pressure plate, the front end of the pressure plate is slidably connected with the rear end of the first cross beam, the rear end of the pressure plate is slidably connected with the front end of the second cross beam, the upper ends of the connecting rods are fixedly provided with hydraulic cylinders, the free ends of piston rods of the hydraulic cylinders are fixedly connected with the middle part of the right end of the pressure plate, the front end of the first cross beam and the rear end of the second cross beam are fixedly connected with a support, the upper end of, the spray nozzle is positioned above the filter plate, the middle parts of the connecting rod, the thrust plate and the filter plate are all provided with liquid inlet holes, the four corners of the thrust plate and the filter plate are all provided with liquid outlet holes A, the liquid inlet holes are connected with the lower part of the right end of the pretreatment tank through liquid inlet pipes, the liquid inlet pipes are provided with liquid pumps A, the liquid outlet holes A are connected with the upper end of a liquid collecting tank B through liquid outlet pipes, a filter screen A and a filter screen B are sequentially arranged in the liquid collecting tank B from top to bottom, the lower part of the left end of the liquid collecting tank B is connected with a liquid pumping pipe, the liquid pumping pipe is provided with a liquid pumping pump B, the other end of the liquid pumping pipe penetrates through a fixed plate and is communicated with the upper end of a liquid distributor, the supporting legs are fixedly connected with a material collecting tank which is arranged in a high inclined mode from low left to right, the, the liquid collecting device is characterized in that a liquid outlet hole B is formed in the material collecting groove, a material collecting box is arranged below the left end of the material collecting groove, and a liquid collecting box A is arranged below the material collecting groove.

2. The filter press for wastewater treatment according to claim 1, wherein: the guide plate is obliquely arranged in a left-high-right direction.

3. The filter press for wastewater treatment according to claim 1, wherein: the box cover and the pretreatment box are detachably connected.

4. The filter press for wastewater treatment according to claim 1, wherein: the directions of rotation of the stirring shaft A and the stirring shaft B are opposite.

5. The filter press for wastewater treatment according to claim 1, wherein: the filter screen A and the filter screen B are detachably connected with the liquid collecting box B.

6. The filter press for wastewater treatment according to claim 1, wherein: the diameter of the filter hole of the filter screen A is larger than that of the filter hole of the filter screen B.

7. The filter press for wastewater treatment according to claim 1, wherein: the liquid outlet holes B are uniformly distributed on the material collecting groove.