1. A system for purifying electrophoretic processing waste liquid comprises a surface-adjusting phosphating waste liquid pool, a flocculation reaction device, a multi-medium mechanical filter and a plate-frame filter press; the surface-adjusting phosphating waste liquid pool is used for preliminarily removing metal ions and phosphate ions in the electrophoretic processing waste liquid; the flocculation reaction device removes most suspended matters and surfactants in the electrophoretic processing waste liquid by a mud-water separation method; the multi-medium mechanical filter is used for finely filtering the sewage after mud-water separation; the plate-and-frame filter press is used for dewatering the water sludge subjected to flocculation precipitation treatment;

the method is characterized in that: the plate-frame filter press comprises a mounting frame (1), a filter plate (2), a pulling mechanism (3), a pushing mechanism (4) and a controller; the filter plate (2) is connected to the upper end of the mounting frame (1) in a sliding manner, and the filter plate (2) comprises filter cloth (21), a filter plate groove (22), filter holes (23) and bulges (24); the filter cloth (21) is arranged in the filter plate groove (22); the bulges (24) are used for supporting the filter cloth (21); the filter hole (23) is positioned in the center of the filter plate (2), and the filter hole (23) is opposite to the feed port (11); a feed inlet (11) is formed in one end of the mounting frame (1); the pulling mechanism (3) is connected to two sides of the mounting frame (1) in a sliding mode, and the pulling mechanism (3) comprises a first electric push rod (31) and a support frame (32); a stop lever (33) is arranged on the inner wall of the support frame (32), and the lower end of the support frame (32) is fixedly connected with a second electric push rod (321); one end of the stop lever (33) is hinged with the support frame (32), and the other end of the stop lever is fixedly connected with the support frame (32) through a first spring (34); a first electromagnet (322) is arranged on the inner wall of the support frame (32); the first electromagnet (322) is positioned below the stop lever (33); the lower end of the second electric push rod (321) is fixedly connected with a push plate (5); the pushing mechanism (4) comprises a pressing plate (41) and a hydraulic cylinder (42); one end of the mounting rack (1) far away from the feed inlet (11) is fixedly connected with a hydraulic cylinder (42); one end of the hydraulic cylinder (42) is fixedly connected with the pressing plate (41); the controller is used for controlling the automatic operation of the plate and frame filter press.

2. The electrophoretic processing waste liquid purification system as claimed in claim 1, wherein: one end of the push plate (5) far away from the hydraulic cylinder (42) is provided with a first groove (51); a sliding plate (52) is connected in the first groove (51) in a sliding manner; a second spring (53) is arranged between the sliding plate (52) and the first groove (51); one end of the second spring (53) is fixedly connected with the sliding plate (52), and the other end of the second spring is fixedly connected with the bottom of the first groove (51).

3. The electrophoretic processing waste liquid purification system as claimed in claim 2, wherein: two ends of the sliding plate (52) are provided with a second groove (54); a sliding block (55) is connected in the second groove (54) in a sliding way; the sliding block (55) is fixedly connected with the groove bottom of the second groove (54) through a third spring (56).

4. The electrophoretic processing waste liquid purification system as claimed in claim 3, wherein: the upper end of the push plate (5) is provided with a rotating rod (6); one end of the rotating rod (6) is rotatably connected with the push plate (5) through a torsion spring (61), and the other end of the rotating rod is rotatably connected with a roller (62); the surface of the roller (62) is fixedly connected with bristles (621).

5. The electrophoretic processing waste liquid purification system as claimed in claim 4, wherein: the rotating rod (6) comprises a first straight rod (63) and a second straight rod (64); the first straight rod (63) is rotatably connected with the push plate (5) through a torsion spring (61), and a third groove (65) is formed in one end, far away from the push plate (5), of the first straight rod (63); the second straight rod (64) is connected in the third groove (65) in a sliding manner, and the second straight rod (64) is fixedly connected with the bottom of the third groove (65) through a fourth spring (66); the roller (62) is rotatably connected with the second straight rod (64).

6. The electrophoretic processing waste liquid purification system as claimed in claim 5, wherein: the groove bottom of the first groove (51) is fixedly connected with a second electromagnet (511).

Background

The electrophoresis production wastewater mainly comes from degreasing and cleaning water of workpieces; through flocculation and precipitation's mode mud-water separation to the water mud that will flocculate and precipitate the separation gets into through the feed inlet of plate and frame pressure filter, makes mud discharge to between two adjacent filter-pressing boards of plate and frame pressure filter, along with constantly discharging of water mud, sewage in the water mud filters through the filter cloth on the filter-pressing board, and mud is then retained between two adjacent filter cloth, forms and strains the mud cake, when pulling two adjacent filter plate separation, strains the mud cake and can drop under the effect of self gravity.

For example, a chinese patent with application number CN202020939378.9 discloses a plate and frame filter press, which uses a liquid collecting tank to allow water filtered by the filter press to enter the liquid collecting tank, so that a filter screen in the liquid collecting tank filters the liquid for the second time; thereby filtering and removing solid particles in the liquid, and leading the filtered liquid to enter a liquid accumulation groove for collection; further improving the quality of the recovered liquid; however, in the process of discharging the water sludge to the filter cloth, when the discharge amount of the water sludge is not enough to fill the gap between two adjacent filter cloths, the discharge amount of water sludge is small, so that the viscosity coefficient of the water sludge is increased, the sludge is adhered and accumulated on the surface of the filter cloth, and the limitation of the technical scheme is further caused.

In view of this, in order to overcome the above technical problems, the present invention provides an electrophoretic processing waste liquid purification system, which solves the above technical problems.

Disclosure of Invention

In order to make up for the defects of the prior art, the invention provides an electrophoresis processing waste liquid purification system, through the arrangement of a push plate, the push plate can push sludge to fall off from the surface of a filter plate, so that the sludge adhered to the surface of filter cloth is reduced, on one hand, the sludge is prevented from accumulating on the surface of the filter cloth, and the filtering effect of the filter cloth is improved, on the other hand, bacteria in the sludge are prevented from accumulating on the surface of the filter cloth along with the sludge, so that the bacteria corrode the filter cloth, and the service life of the filter cloth is prolonged.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to an electrophoretic processing waste liquid purification system which comprises a surface-adjusting phosphating waste liquid pool, a flocculation reaction device, a multi-medium mechanical filter and a plate-frame type filter press, wherein the surface-adjusting phosphating waste liquid pool is used for preliminarily removing metal ions and phosphate radical ions in electrophoretic processing waste liquid; the flocculation reaction device removes most suspended matters and surfactants in the electrophoretic processing waste liquid by a mud-water separation method; the multi-medium mechanical filter is used for finely filtering the sewage after mud-water separation; the plate-and-frame filter press is used for dewatering the water sludge subjected to flocculation precipitation treatment;

the plate-frame filter press comprises a mounting frame, a filter plate, a pulling mechanism, a pushing mechanism and a controller; the filter plate is connected to the upper end of the mounting frame in a sliding manner and comprises filter cloth, a filter plate groove, filter holes and bulges; the filter cloth is arranged in the filter plate groove; the bulges are used for supporting the filter cloth; the filter hole is positioned in the center of the filter plate and is opposite to the feed inlet; a feed inlet is formed in one end of the mounting rack; the pulling mechanism is connected to two sides of the mounting frame in a sliding mode and comprises a first electric push rod and a support frame; the inner wall of the support frame is provided with a stop lever, and the lower end of the support frame is fixedly connected with a second electric push rod; one end of the stop lever is hinged with the support frame, and the other end of the stop lever is fixedly connected with the support frame through a first spring; the inner wall of the support frame is provided with a first electromagnet; the first electromagnet is positioned below the stop lever; the lower end of the second electric push rod is fixedly connected with a push plate; the pushing mechanism comprises a pressing plate and a hydraulic cylinder; one end of the mounting frame, which is far away from the feed inlet, is fixedly connected with a hydraulic cylinder; one end of the hydraulic cylinder is fixedly connected with the pressing plate; the controller is used for controlling the plate-frame filter press to automatically operate;

in the prior art, as sludge is discharged between two filter cloths, the filter cloths deform under the extrusion of the sludge, and the filter cloths sink towards the direction of a filter plate; therefore, the gap between the two filter cloths is enlarged, and when the discharge amount of sludge cannot be accumulated between the two adjacent filter cloths to form sludge cakes, the filtering effect of the filter cloths on the sludge is weakened; when the pulling mechanism pulls the filter plate to be far away, sludge around the filter holes can be adhered to the surface of the filter cloth due to much moisture and cannot fall off, so that the filter holes on the surface of the filter cloth are blocked, the filtering effect of the filter cloth is influenced, and the sludge contains microorganisms such as bacteria and the like, so that the sludge corrodes the filter cloth, and the service life of the filter cloth is influenced;

when the device works, the controller controls the hydraulic cylinder to extend out, so that the pressing plate pushes the filter plates at the upper end of the mounting frame to abut against each other, water sludge is introduced from the feed port, the water sludge is enabled to flow into the space between two adjacent filter cloths from the filter holes, water in the water sludge is enabled to flow out from the liquid outlet hole after being filtered by the filter cloths, and residual sludge is accumulated between the two filter cloths to form a sludge cake; after the filtration is finished, stopping introducing the water sludge, and controlling the hydraulic cylinder to withdraw by the controller; the controller controls the first electric push rod to extend out, so that the first electric push rod pushes the support frame to extend out, when the support frame is positioned at a first filter plate, a stop lever on the inner wall of the support frame is extruded by protrusions at two ends of the filter plate, so that the stop lever compresses a first spring and rotates and contracts in a direction away from the filter plate, when the support frame passes through the first filter plate, the stop lever resets under the action of the first spring, and at the moment, the first electric push rod is controlled to pull the support frame to return, so that the stop lever pushes the first filter plate to be separated from a second filter plate; when sludge is adhered to the surface of the filter cloth, a user controls the first electric push rod to extend out, so that the first electric push rod pushes the mounting frame to be positioned between the two filter plates, controls the second electric push rod to extend out, enables the second electric push rod to push the push plate to the position of the filter plate groove, controls the first electric push rod to extend, enables the mounting frame to drive the push plate to extend into the filter plate groove, controls the second electric push rod to continue to extend out, and enables the second electric push rod to drive the push plate to push the sludge on the surface of the filter cloth to fall; when the sludge falls, the controller controls the first electric push rod to contract, so that the push plate is far away from the filter plate, and the second electric push rod is controlled to drive the push plate to reset; repeating the steps until the sludge is cleaned; at the moment, the worker controls the first electromagnet to be electrified through the controller, so that the first electromagnet attracts the stop lever, the stop lever rotates to contract, the first electric push rod is controlled to contract, and the first electric push rod drives the support frame to reset;

according to the invention, through the arrangement of the push plate, the push plate can push sludge to fall off from the surface of the filter plate, so that the sludge adhered to the surface of the filter cloth is reduced, on one hand, the sludge is prevented from accumulating on the surface of the filter cloth, thereby improving the filtering effect of the filter cloth, on the other hand, bacteria in the sludge are prevented from accumulating on the surface of the filter cloth along with the sludge, so that the bacteria corrode the filter cloth, and further the service life of the filter cloth is prolonged.

Preferably, one end of the push plate, which is far away from the hydraulic cylinder, is provided with a first groove; a sliding plate is connected in the first groove in a sliding manner; a second spring is arranged between the sliding plate and the first groove; one end of the second spring is fixedly connected with the sliding plate, and the other end of the second spring is fixedly connected with the bottom of the first groove; when the filter plate is in work, when sludge is adhered to the surface of the filter cloth, the controller controls the first electric push rod to extend, so that the sliding plate is positioned at the upper end of the filter plate under the pushing of the first electric push rod, the controller controls the second electric push rod to extend, so that the second electric push rod pushes the sliding plate to move towards the direction of the filter plate, when the sliding plate is contacted with the filter plate, the sliding plate is extruded by the filter plate, so that the sliding plate extrudes the second spring to slide towards the first groove, along with the continuous movement of the second electric push rod, the sliding plate is pushed by the second electric push rod to slide along the surface of the filter plate until the sliding plate is positioned at the upper end of the filter plate groove, the sliding plate is not extruded by the filter plate, so that the sliding plate is reset under the pushing of the second spring, the sliding plate extends into the filter plate groove and is contacted with the filter cloth, so that the sliding plate pushes the filter cloth to be contacted with the bulges on the filter plate and tightened under the bulges, when the filter cloth is tightened, the sliding plate is blocked by the filter cloth and extrudes the second spring to move in the first groove; with the downward movement of the second electric push rod, the second spring pushes the sliding plate to be in close contact with the filter cloth, so that the sliding plate pushes the sludge on the surface of the filter cloth to fall off; according to the invention, the sliding plate is matched with the second spring, so that the sliding plate pushes the filter cloth to be tightened under the action of the restoring force of the second spring, the sliding plate is tightly contacted with the filter cloth, the cleaning effect of the sliding plate on the sludge adhered to the surface of the filter cloth is improved, and the actual application effect of the invention is improved.

Preferably, two ends of the sliding plate are provided with a second groove; a sliding block is connected in the second groove in a sliding manner; the sliding block is fixedly connected with the bottom of the second groove through a third spring; when the sludge cleaning device works, sludge is continuously accumulated between two adjacent filter cloths, so that the sludge pushes the filter cloths to be tightened, the tightened filter cloths move in a direction close to a filter plate under the extrusion of the sludge, the filter cloths deform and loosen, when the sliding plate is in contact with the loosened filter cloths, the sliding plate pushes the loosened filter cloths to move in the direction of the filter plate, the loosened filter cloths are sunk between bulges and tightened, in the process that the sliding plate pushes the sludge on the surfaces of the loosened filter cloths to fall off, the sliding blocks at the two ends of the sliding plate can push the loosened filter cloths to be in contact with the surfaces of the bulges, so that the sliding blocks at the two ends of the sliding plate are blocked by the bulges to compress the third spring, the sliding blocks continuously move into the second groove, and at the moment, one end, far away from the third spring, of the sliding block can be; according to the invention, the slide block and the third spring are mutually matched, so that the slide block can clean the loose filter cloth attached to the outer wall of the bulge under the pushing action of the third spring, thereby preventing sludge from accumulating on the surface of the loose filter cloth, improving the filtering effect of the loose filter cloth and further prolonging the service life of the filter cloth.

Preferably, the upper end of the push plate is provided with a rotating rod; one end of the rotating rod is rotatably connected with the push plate through a torsion spring, and the other end of the rotating rod is rotatably connected with a roller; the surface of the roller is fixedly connected with bristles; when the filter plate cleaning machine works, when the sliding plate slides along the surface of the filter plate under the pushing of the second electric push rod, the rotating rod at the upper end of the push plate is blocked by the filter plate, so that the rotating rod overcomes the torsion force of the torsion spring and rotates towards the direction far away from the filter plate, the roller rolls along the surface of the filter plate along with the extension of the second electric push rod until the sliding plate enters the filter plate groove and contacts with the filter cloth, so that the sludge on the surface of the filter cloth is pushed to fall off by the sliding plate, the roller moves to the position of the filter plate groove, the roller is not blocked by the filter plate, so that the roller rotates towards the direction close to the filter cloth under the restoring force of the torsion spring until the roller contacts with the tightened filter cloth, the roller rolls along the surface of the filter cloth along with the continuous extension of the second electric push rod, so that the bristles on the surface of the roller clean the sludge remained on the surface of the filter cloth, when the sliding plate is driven by the second electric push rod to ascend, the roller rolls upwards along the surface of the filter cloth, until the roller contacts with the upper wall of the filter plate groove, the second electric push rod is controlled to stop, and the first electric push rod contracts to enable the first electric push rod to pull the roller to move away from the filter plate, so that the roller cleans the upper wall of the filter plate groove; until the first electric push rod extends out of the filter plate groove under the driving of the roller, the second electric push rod is controlled to reset; according to the invention, through the matching between the roller and the bristles, the bristles can clean the sludge remained on the surface of the filter cloth along with the rolling of the roller, so that the residue of the sludge on the surface of the filter cloth is reduced, the filtering effect of the filter cloth is improved, and the practical application effect of the invention is improved.

Preferably, the rotating rod comprises a first straight rod and a second straight rod; the first straight rod is rotatably connected with the push plate through a torsion spring, and a third groove is formed in one end, far away from the push plate, of the first straight rod; the second straight rod is connected in the third groove in a sliding mode, and the second straight rod is fixedly connected with the bottom of the third groove through a fourth spring; the roller is rotationally connected with the second straight rod; when the filter plate is in work, when the second electric push rod pushes the second straight rod to be in contact with the filter plate, the filter plate blocks the second straight rod, the second straight rod is enabled to push the first straight rod to overcome the torsion of the torsion spring and rotate towards the direction away from the filter plate, the second straight rod drives the roller to roll on the surface of the filter plate along with the continuous extension of the second electric push rod, the roller rolls to the groove of the filter plate until the roller rolls, the roller is enabled to be in contact with the tightened filter cloth, the roller is squeezed by the tightened filter cloth, the roller is enabled to push the second straight rod to squeeze the fourth spring to slide in the third groove, the roller is pushed by the fourth spring to be in contact with the filter cloth, and the brush bristles are enabled to improve the cleaning effect of the brush bristles on the filter cloth.

Preferably, the groove bottom of the first groove is fixedly connected with a second electromagnet; when the filter plate is in work, when the sliding plate pushes sludge in the filter plate groove to fall off, the sludge is blocked by the lower end of the sliding plate to separate from the filter cloth, and the lower end of the sliding plate is directly contacted with the sludge, so that the sludge is adhered to the lower end of the sliding plate, and when the sludge on the surface of the filter cloth is completely separated under the pushing of the sliding plate; at the moment, the second electromagnet is controlled to be electrified, so that the second electromagnet adsorbs the sliding plate, the sliding plate extrudes the second spring to slide into the first groove, sludge at the lower end of the sliding plate is separated from the lower end of the sliding plate under the blocking of the push plate along with the sliding of the sliding plate into the first groove, and the cleanness of the lower end surface of the sliding plate is ensured, so that the practical application effect of the invention is improved.

The invention has the following beneficial effects:

1. according to the invention, through the arrangement of the push plate, the push plate can push sludge to fall off from the surface of the filter plate, so that the sludge adhered to the surface of the filter cloth is reduced, on one hand, the sludge is prevented from accumulating on the surface of the filter cloth, thereby improving the filtering effect of the filter cloth, on the other hand, bacteria in the sludge are prevented from accumulating on the surface of the filter cloth along with the sludge, so that the bacteria corrode the filter cloth, and further the service life of the filter cloth is prolonged.

2. According to the invention, the sliding plate is matched with the second spring, so that the sliding plate pushes the filter cloth to be tightened under the action of the restoring force of the second spring, the sliding plate is tightly contacted with the filter cloth, the cleaning effect of the sliding plate on the sludge adhered to the surface of the filter cloth is improved, and the actual application effect of the invention is improved.

3. According to the invention, the slide block and the third spring are mutually matched, so that the slide block can clean the loose filter cloth attached to the outer wall of the bulge under the pushing action of the third spring, thereby preventing sludge from accumulating on the surface of the loose filter cloth, improving the filtering effect of the loose filter cloth and further prolonging the service life of the filter cloth.

Drawings

The invention is further described with reference to the following figures and embodiments.

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

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a cross-sectional view taken at A-A of FIG. 2;

FIG. 4 is an enlarged view at B in FIG. 3;

FIG. 5 is an enlarged view at C in FIG. 3;

FIG. 6 is a perspective view of a push plate according to the present invention;

FIG. 7 is a cross-sectional view taken at D-D of FIG. 6;

in the figure: 1. a mounting frame; 11. a feed inlet; 2. filtering the plate; 21. filtering cloth; 22. a filter plate groove; 221. a liquid outlet hole; 23. filtering holes; 24. a protrusion; 3. a pulling mechanism; 31. a first electric push rod; 32. a support frame; 321. a second electric push rod; 322. an electromagnet; 33. a stop lever; 34. a first spring; 4. a pushing mechanism; 41. a compression plate; 42. a hydraulic cylinder; 5. pushing the plate; 51. a first groove; 511. a second electromagnet; 52. a slide plate; 53. a second spring; 54. a second groove; 55. a slider; 56. a third spring; 6. a rotating rod; 61. a torsion spring; 62. a roller; 621. brushing; 63. a first straight rod; 64. a second straight rod; 65. a groove III; 66. and a fourth spring.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 7, the system for purifying waste liquid from electrophoretic processing of the present invention comprises a surface-controlled phosphating waste liquid pool, a flocculation reaction device, a multi-media mechanical filter, and a plate-and-frame filter press, wherein the surface-controlled phosphating waste liquid pool is used for preliminarily removing metal ions and phosphate ions from waste liquid from electrophoretic processing; the flocculation reaction device removes most suspended matters and surfactants in the electrophoretic processing waste liquid by a mud-water separation method; the multi-medium mechanical filter is used for finely filtering the sewage after mud-water separation; the plate-and-frame filter press is used for dewatering the water sludge subjected to flocculation precipitation treatment;

the plate-and-frame filter press comprises a mounting frame 1, a filter plate 2, a pulling mechanism 3, a pushing mechanism 4 and a controller; the filter plate 2 is connected to the upper end of the mounting frame 1 in a sliding manner, and the filter plate 2 comprises filter cloth 21, a filter plate groove 22, filter holes 23 and bulges 24; the filter cloth 21 is arranged in the filter plate groove 22; the protrusions 24 are used for supporting the filter cloth 21; the filter hole 23 is positioned in the center of the filter plate 2, and the filter hole 23 is opposite to the feed inlet 11; a feed inlet 11 is formed in one end of the mounting rack 1; the pulling mechanism 3 is connected to two sides of the mounting frame 1 in a sliding manner, and the pulling mechanism 3 comprises a first electric push rod 31 and a support frame 32; a stop lever 33 is arranged on the inner wall of the support frame 32, and the lower end of the support frame 32 is fixedly connected with a second electric push rod 321; one end of the stop lever 33 is hinged with the support frame 32, and the other end of the stop lever is fixedly connected with the support frame 32 through a first spring 34; a first electromagnet 322 is arranged on the inner wall of the support frame 32; the first electromagnet 322 is positioned below the stop lever 33; the lower end of the second electric push rod 321 is fixedly connected with a push plate 5; the pushing mechanism 4 comprises a pressing plate 41 and a hydraulic cylinder 42; one end of the mounting rack 1, which is far away from the feed inlet 11, is fixedly connected with a hydraulic cylinder 42; one end of the hydraulic cylinder 42 is fixedly connected with the pressing plate 41; the controller is used for controlling the plate-frame filter press to automatically operate;

in the prior art, as the sludge is discharged between the two filter cloths 21, the filter cloths 21 are deformed by the extrusion of the sludge, so that the filter cloths 21 are sunken towards the direction of the filter plate 2; therefore, the gap between the two filter cloths 21 is enlarged, and when the discharge amount of sludge cannot be accumulated between the two adjacent filter cloths 21 to form sludge cakes, the filtering effect of the filter cloths 21 on the sludge is weakened; when the pulling mechanism 3 pulls the filter plate 2 away, sludge around the filter holes 23 can be adhered to the surface of the filter cloth 21 due to much moisture and cannot fall off, so that the filter holes 23 on the surface of the filter cloth 21 are blocked, the filtering effect of the filter cloth 21 is influenced, and the sludge contains microorganisms such as bacteria, so that the sludge corrodes the filter cloth 21 and the service life of the filter cloth 21 is influenced;

when the device works, the controller controls the hydraulic cylinder 42 to extend out, so that the pressing plate 41 pushes the filter plates 2 at the upper ends of the mounting frames 1 to abut against each other, water sludge is introduced from the feed port 11 at the moment, the water sludge is enabled to flow into the space between two adjacent filter cloth 21 from the filter holes 23, water in the water sludge is enabled to flow out from the liquid outlet hole 221 after being filtered by the filter cloth 21, and residual sludge is accumulated between the two filter cloth 21 to form a sludge cake; after the filtration is finished, stopping introducing the water sludge, and controlling the hydraulic cylinder 42 to withdraw by the controller; at the moment, the controller controls the first electric push rod 31 to extend out, so that the first electric push rod 31 pushes the support frame 32 to extend out, when the support frame 32 is positioned at the first filter plate 2, the stop lever 33 on the inner wall of the support frame 32 is pressed by the protrusions at the two ends of the filter plate 2, so that the stop lever 33 compresses the first spring 34 to rotate and contract in the direction away from the filter plate 2, when the support frame 32 passes over the first filter plate 2, the stop lever 33 is reset under the action of the first spring 34, and at the moment, the first electric push rod 31 is controlled to pull the support frame 32 to return, so that the stop lever 33 pushes the first filter plate 2 to be separated from the second filter plate 2; when sludge is adhered to the surface of the filter cloth 21, a user controls the first electric push rod 31 to extend out, so that the first electric push rod 31 pushes the mounting frame 1 to be positioned between two filter plates 2, controls the second electric push rod 321 to extend out, so that the second electric push rod 321 pushes the push plate 5 to a position of a filter plate groove 22, and controls the first electric push rod 31 to extend, so that the mounting frame 1 drives the push plate 5 to extend into the filter plate groove 22, controls the second electric push rod 321 to continue to extend out, and causes the second electric push rod 321 to drive the push plate 5 to push the sludge on the surface of the filter cloth 21 to fall; when the sludge falls, the controller controls the first electric push rod 31 to contract, so that the push plate 5 is far away from the filter plate 2, and the second electric push rod 321 is controlled to drive the push plate 5 to reset; repeating the steps until the sludge is cleaned; at the moment, the worker controls the first electromagnet 322 to be electrified through the controller, so that the first electromagnet 322 attracts the stop lever 33, the stop lever 33 rotates to contract, the first electric push rod 31 is controlled to contract, and the first electric push rod 31 drives the support frame 32 to reset;

according to the invention, through the arrangement of the push plate 5, the push plate 5 can push sludge to fall off from the surface of the filter plate 2, so that the sludge adhered to the surface of the filter cloth 21 is reduced, on one hand, the sludge is prevented from accumulating on the surface of the filter cloth 21, thereby improving the filtering effect of the filter cloth 21, on the other hand, bacteria in the sludge are prevented from continuously accumulating on the surface of the filter cloth 21 along with the sludge, so that the bacteria corrode the filter cloth 21, and further the service life of the filter cloth 21 is prolonged.

As an embodiment of the present invention, one end of the push plate 5 away from the hydraulic cylinder 42 is provided with a first groove 51; a sliding plate 52 is connected in the first groove 51 in a sliding manner; a second spring 53 is arranged between the sliding plate 52 and the first groove 51; one end of the second spring 53 is fixedly connected with the sliding plate 52, and the other end of the second spring is fixedly connected with the bottom of the first groove 51; when the filter cloth drying machine works, when sludge is adhered to the surface of the filter cloth 21, the controller controls the first electric push rod 31 to extend, so that the sliding plate 52 is positioned at the upper end of the filter plate 2 under the pushing of the first electric push rod 31, the controller controls the second electric push rod 321 to extend, so that the second electric push rod 321 pushes the sliding plate 52 to move towards the direction of the filter plate 2, when the sliding plate 52 is contacted with the filter plate 2, the sliding plate 52 is extruded by the filter plate 2, so that the sliding plate 52 extrudes the second spring 53 to slide towards the first groove 51, the sliding plate 52 is pushed by the second electric push rod 321 to slide along the surface of the filter plate 2 along with the continuous movement of the second electric push rod 321, until the sliding plate 52 is positioned at the upper end of the filter plate groove 22, because the sliding plate 52 is not extruded by the filter plate 2, the sliding plate 52 is reset under the pushing of the second spring 53, so that the sliding plate 52 extends into the filter plate groove 22 and is contacted with the filter cloth 21, so that the sliding plate 52 pushes the filter cloth 21 to be contacted with the bulge 24 on the filter plate 2, and tightened under the support of the bulge 24, when the filter cloth 21 is tightened, the sliding plate 52 is blocked by the filter cloth 21 and presses the second spring 53 to move in the first groove 51; with the downward movement of the second electric push rod 321, the second spring 53 pushes the sliding plate 52 to be in close contact with the filter cloth 21, so that the sliding plate 52 pushes the sludge on the surface of the filter cloth 21 to fall off; according to the invention, the sliding plate 52 is matched with the second spring 53, so that the sliding plate 52 pushes the filter cloth 21 to be tightened under the restoring force of the second spring 53, the sliding plate 52 is tightly contacted with the filter cloth 21, the cleaning effect of the sliding plate 52 on the sludge adhered to the surface of the filter cloth 21 is improved, and the actual application effect of the invention is improved.

As an embodiment of the present invention, two ends of the sliding plate 52 are provided with a second groove 54; a sliding block 55 is connected in the second groove 54 in a sliding manner; the sliding block 55 is fixedly connected with the bottom of the second groove 54 through a third spring 56; when in work, the sludge is continuously accumulated between two adjacent filter cloth 21, so that the sludge pushes the filter cloth 21 to be tightened, the tightened filter cloth 21 moves towards the direction close to the filter plate 2 under the extrusion of the sludge, thereby causing the filter cloth 21 to be deformed and loosened, and when the slide plate 52 comes into contact with the loosened filter cloth 21, the slide plate 52 pushes the loose filter cloth 21 to move towards the direction of the filter plate 2, so that the loose filter cloth 21 is trapped between the protrusions 24 and tightened, in the process that the slide plate 52 pushes the sludge on the surface of the loose filter cloth 21 to fall off, the slide blocks 55 at the two ends of the slide plate 52 can push the loose filter cloth 21 to contact with the surface of the bulge 24, so that the sliders 55 at both ends of the slide plate 52 are blocked by the protrusions 24 to compress the third spring 56, the sliding block 55 is further enabled to continuously move into the second groove 54, and at the moment, one end of the sliding block 55 far away from the third spring 56 can clean the loose filter cloth 21 attached to the outer wall of the bulge 24; according to the invention, the slide block 55 and the third spring 56 are matched with each other, so that the slide block 55 can clean the loose filter cloth 21 attached to the outer wall of the bulge 24 under the pushing action of the third spring 56, thereby preventing sludge from accumulating on the surface of the loose filter cloth 21, improving the filtering effect of the loose filter cloth 21 and further prolonging the service life of the filter cloth 21.

As an embodiment of the invention, the upper end of the push plate 5 is provided with a rotating rod 6; one end of the rotating rod 6 is rotatably connected with the push plate 5 through a torsion spring 61, and the other end of the rotating rod is rotatably connected with a roller 62; the surface of the roller 62 is fixedly connected with bristles 621; when the filter cloth cleaning device works, when the sliding plate 52 slides along the surface of the filter plate 2 under the pushing of the second electric push rod 321, the rotating rod 6 at the upper end of the push plate 5 is blocked by the filter plate 2, so that the rotating rod 6 overcomes the torsion force of the torsion spring 61 and rotates towards the direction far away from the filter plate 2, along with the extension of the second electric push rod 321, the roller 62 rolls along the surface of the filter plate 2 until the sliding plate 52 enters the filter plate groove 22 and contacts with the filter cloth 21, so that the sliding plate 52 pushes the sludge on the surface of the filter cloth 21 to fall off, at the moment, the roller 62 moves to the filter plate groove 22, at the moment, the roller 62 is not blocked by the filter plate 2, so that the roller 62 rotates towards the direction close to the filter cloth 21 under the restoring force of the torsion spring 61 until the roller 62 contacts with the tightened filter cloth 21, along with the continuous extension of the second electric push rod 321, the roller 62 rolls along the surface of the filter cloth 21, so that the bristles 621 on the surface of the roller 62 cleans the sludge remaining on the surface of the filter cloth 21, when the second electric push rod 321 drives the sliding plate 52 to ascend, the roller 62 is driven by the second electric push rod 321 to roll upwards along the surface of the filter cloth 21 until the roller 62 contacts with the upper wall of the filter plate groove 22, at this time, the second electric push rod 321 is controlled to stop, the first electric push rod 31 contracts, so that the first electric push rod 31 pulls the roller 62 to move away from the filter plate 2, and the roller 62 cleans the upper wall of the filter plate groove 22; until the first electric push rod 31 extends out of the filter plate groove 22 under the driving of the roller 62, the second electric push rod 321 is controlled to reset; according to the invention, through the matching between the roller 62 and the brush 621, the brush 621 can clean the sludge remained on the surface of the filter cloth 21 along with the rolling of the roller 62, so that the residue of the sludge on the surface of the filter cloth 21 is reduced, the filtering effect of the filter cloth 21 is improved, and the practical application effect of the invention is improved.

As an embodiment of the present invention, the rotating rod 6 includes a first straight rod 63 and a second straight rod 64; the first straight rod 63 is rotatably connected with the push plate 5 through a torsion spring 61, and a third groove 65 is formed in one end, far away from the push plate 5, of the first straight rod 63; the second straight rod 64 is connected in the third groove 65 in a sliding manner, and the second straight rod 64 is fixedly connected with the groove bottom of the third groove 65 through a fourth spring 66; the roller 62 is rotatably connected with a second straight rod 64; when the filter plate works, when the second electric push rod 321 pushes the second straight rod 64 to contact with the filter plate 2, the filter plate 2 blocks the second straight rod 64, so that the second straight rod 64 pushes the first straight rod 63 to rotate in a direction away from the filter plate 2 against the torsion of the torsion spring 61, and along with the continuous extension of the second electric push rod 321, the second straight rod 64 drives the roller 62 to roll on the surface of the filter plate 2 until the roller 62 rolls to the filter plate groove 22, so that the roller 62 contacts with the tightened filter cloth 21, and the roller 62 is extruded by the tightened filter cloth 21, so that the roller 62 pushes the second straight rod 64 to extrude the fourth spring 66 to slide in the third groove 65, and the roller 62 drives the brush bristles 621 to closely contact with the filter cloth 21 under the pushing of the restoring force of the fourth spring 66, and further improves the cleaning effect of the brush bristles 621 on the filter cloth 21.

As an embodiment of the present invention, a second electromagnet 511 is fixedly connected to the bottom of the first groove 51; when the filter screen is in operation, when the sliding plate 52 pushes the sludge in the filter screen groove 22 to fall off, the sludge is blocked by the lower end of the sliding plate 52 and is separated from the filter screen 21, at the moment, the lower end of the sliding plate 52 is in direct contact with the sludge, so that the sludge is adhered to the lower end of the sliding plate 52, and when the sludge on the surface of the filter screen 21 is completely separated under the pushing of the sliding plate 52; at this time, the second electromagnet 511 is controlled to be electrified, so that the second electromagnet 511 adsorbs the sliding plate 52, the sliding plate 52 extrudes the second spring 53 to slide into the first groove 51, and along with the sliding plate 52 sliding into the first groove 51, sludge at the lower end of the sliding plate 52 is separated from the lower end of the sliding plate 52 under the blocking of the push plate 5, so that the cleanness of the lower end surface of the sliding plate 52 is ensured, and the practical application effect of the invention is improved.

The specific working process is as follows:

the controller controls the hydraulic cylinder 42 to extend out, so that the pressing plate 41 pushes the filter plates 2 at the upper end of the mounting frame 1 to abut against each other, water sludge is introduced from the feed port 11 at the moment, the water sludge is enabled to flow into the space between two adjacent filter cloths 21 from the filter holes 23, water in the water sludge is enabled to flow out from the liquid outlet hole 221 after being filtered by the filter cloths 21, and residual sludge is accumulated between the two filter cloths 21 to form a sludge cake; after the filtration is finished, stopping introducing the water sludge, and controlling the hydraulic cylinder 42 to withdraw by the controller; at the moment, the controller controls the first electric push rod 31 to extend out, so that the first electric push rod 31 pushes the support frame 32 to extend out, when the support frame 32 is positioned at the first filter plate 2, the stop lever 33 on the inner wall of the support frame 32 is pressed by the protrusions at the two ends of the filter plate 2, so that the stop lever 33 compresses the first spring 34 to rotate and contract in the direction away from the filter plate 2, when the support frame 32 passes over the first filter plate 2, the stop lever 33 is reset under the action of the first spring 34, and at the moment, the first electric push rod 31 is controlled to pull the support frame 32 to return, so that the stop lever 33 pushes the first filter plate 2 to be separated from the second filter plate 2; when sludge is adhered to the surface of the filter cloth 21, a user controls the first electric push rod 31 to extend out, so that the first electric push rod 31 pushes the mounting frame 1 to be positioned between two filter plates 2, controls the second electric push rod 321 to extend out, so that the second electric push rod 321 pushes the push plate 5 to a position of a filter plate groove 22, and controls the first electric push rod 31 to extend, so that the mounting frame 1 drives the push plate 5 to extend into the filter plate groove 22, controls the second electric push rod 321 to continue to extend out, and causes the second electric push rod 321 to drive the push plate 5 to push the sludge on the surface of the filter cloth 21 to fall; when the sludge falls, the controller controls the first electric push rod 31 to contract, so that the push plate 5 is far away from the filter plate 2, and the second electric push rod 321 is controlled to drive the push plate 5 to reset; repeating the steps until the sludge is cleaned; at the moment, the worker controls the first electromagnet 322 to be electrified through the controller, so that the first electromagnet 322 attracts the stop lever 33, the stop lever 33 rotates to contract, the first electric push rod 31 is controlled to contract, and the first electric push rod 31 drives the support frame 32 to reset; when sludge is adhered to the surface of the filter cloth 21, the controller controls the first electric push rod 31 to extend, so that the sliding plate 52 is positioned at the upper end of the filter plate 2 under the pushing of the first electric push rod 31, the controller controls the second electric push rod 321 to extend, so that the second electric push rod 321 pushes the sliding plate 52 to move towards the direction of the filter plate 2, when the sliding plate 52 is contacted with the filter plate 2, the sliding plate 52 is pressed by the filter plate 2, so that the sliding plate 52 presses the second spring 53 to slide into the first groove 51, the sliding plate 52 slides along the surface of the filter plate 2 under the pushing of the second electric push rod 321 along with the continuous movement of the second electric push rod 321, until the sliding plate 52 is positioned at the upper end of the filter plate groove 22, because the sliding plate 52 is not pressed by the filter plate 2, the sliding plate 52 is reset under the pushing of the second spring 53, so that the sliding plate 52 extends into the filter plate groove 22 and is contacted with the filter cloth 21, so that the sliding plate 52 pushes the filter cloth 21 to be contacted with the bulge 24 on the filter plate 2, and tightened under the support of the bulge 24, when the filter cloth 21 is tightened, the sliding plate 52 is blocked by the filter cloth 21 and presses the second spring 53 to move in the first groove 51; with the downward movement of the second electric push rod 321, the second spring 53 pushes the sliding plate 52 to be in close contact with the filter cloth 21, so that the sliding plate 52 pushes the sludge on the surface of the filter cloth 21 to fall off; along with the continuous accumulation of the sludge between two adjacent filter cloths 21, the sludge pushes the filter cloths 21 to be tightened, so that the tightened filter cloths 21 move towards the direction close to the filter plates 2 under the extrusion of the sludge, thereby causing the filter cloth 21 to be deformed and loosened, and when the slide plate 52 comes into contact with the loosened filter cloth 21, the slide plate 52 pushes the loose filter cloth 21 to move towards the direction of the filter plate 2, so that the loose filter cloth 21 is trapped between the protrusions 24 and tightened, in the process that the slide plate 52 pushes the sludge on the surface of the loose filter cloth 21 to fall off, the slide blocks 55 at the two ends of the slide plate 52 can push the loose filter cloth 21 to contact with the surface of the bulge 24, so that the sliders 55 at both ends of the slide plate 52 are blocked by the protrusions 24 to compress the third spring 56, the sliding block 55 is further enabled to continuously move into the second groove 54, and at the moment, one end of the sliding block 55 far away from the third spring 56 can clean the loose filter cloth 21 attached to the outer wall of the bulge 24; when the sliding plate 52 slides along the surface of the filter plate 2 under the pushing of the second electric push rod 321, the rotating rod 6 at the upper end of the push plate 5 is blocked by the filter plate 2, so that the rotating rod 6 rotates in a direction away from the filter plate 2 against the torsion force of the torsion spring 61, the roller 62 rolls along the surface of the filter plate 2 along with the extension of the second electric push rod 321, until the sliding plate 52 enters the filter plate groove 22 and contacts with the filter cloth 21, so that the sliding plate 52 pushes the sludge on the surface of the filter cloth 21 to fall off, at this time, the roller 62 moves to the filter plate groove 22, at this time, the roller 62 is not blocked by the filter plate 2, so that the roller 62 rotates in a direction close to the filter cloth 21 under the restoring force of the torsion spring 61 until the roller 62 contacts with the tightened filter cloth 21, and as the second electric push rod 321 continues to extend, the roller 62 rolls along the surface of the filter cloth 21, so that the bristles 621 on the surface of the roller 62 cleans the sludge remaining on the surface of the filter cloth 21, when the second electric push rod 321 drives the sliding plate 52 to ascend, the roller 62 is driven by the second electric push rod 321 to roll upwards along the surface of the filter cloth 21 until the roller 62 contacts with the upper wall of the filter plate groove 22, at this time, the second electric push rod 321 is controlled to stop, the first electric push rod 31 contracts, so that the first electric push rod 31 pulls the roller 62 to move away from the filter plate 2, and the roller 62 cleans the upper wall of the filter plate groove 22; until the first electric push rod 31 extends out of the filter plate groove 22 under the driving of the roller 62, the second electric push rod 321 is controlled to reset; when the second electric push rod 321 pushes the second straight rod 64 to contact the filter plate 2, the filter plate 2 blocks the second straight rod 64, so that the second straight rod 64 pushes the first straight rod 63 to rotate in a direction away from the filter plate 2 by overcoming the torsion of the torsion spring 61, and along with the continuous extension of the second electric push rod 321, the second straight rod 64 drives the roller 62 to roll on the surface of the filter plate 2 until the roller 62 rolls to the position of the filter plate groove 22, so that the roller 62 contacts the tightened filter cloth 21, at the moment, the roller 62 is extruded by the tightened filter cloth 21, so that the roller 62 pushes the second straight rod 64 to extrude the fourth spring 66 to slide in the third groove 65, and at the moment, the roller 62 is pushed by the restoring force of the fourth spring 66, so that the roller 62 drives the brush 621 to tightly contact the filter cloth 21; when the sliding plate 52 pushes the sludge in the filter plate groove 22 to fall off, the sludge is blocked by the lower end of the sliding plate 52 and is separated from the filter cloth 21, at the moment, the lower end of the sliding plate 52 is in direct contact with the sludge, so that the sludge is adhered to the lower end of the sliding plate 52, and when the sludge on the surface of the filter cloth 21 is completely separated under the pushing of the sliding plate 52; at this time, the second electromagnet 511 is controlled to be electrified, so that the second electromagnet 511 adsorbs the sliding plate 52, the sliding plate 52 extrudes the second spring 53 to slide into the first groove 51, and as the sliding plate 52 slides into the first groove 51, sludge at the lower end of the sliding plate 52 is separated from the lower end of the sliding plate 52 under the blocking of the push plate 5.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.