CN112973243B

CN112973243B - Filtering device for industrial wastewater purification and use method thereof

Info

Publication number: CN112973243B
Application number: CN202110237982.6A
Authority: CN
Inventors: 熊伟; 黄国梁; 蔡战林
Original assignee: Zhejiang Huansen Environmental Technology Co ltd
Current assignee: Zhejiang Huansen Environmental Technology Co ltd
Priority date: 2021-03-04
Filing date: 2021-03-04
Publication date: 2022-04-22
Anticipated expiration: 2041-03-04
Also published as: CN112973243A

Abstract

The invention relates to the field of industrial wastewater purification equipment, in particular to a filtering device for purifying industrial wastewater and a using method thereof. This kind of filter equipment that industrial waste water purifies usefulness and application method thereof filters the waste water after the flocculation treatment through the mechanism drive filter mechanism of decontaminating to keep filtering the high efficiency of waste water, improve the treatment effeciency and the effect to waste water, need not to shut down, realize the continuity work of whole device, improve the treatment effeciency to waste water, and reduce the clearance degree of difficulty and intensity of labour to the flocculation thing.

Description

Filtering device for industrial wastewater purification and use method thereof

Technical Field

The invention relates to the field of industrial wastewater purification equipment, in particular to a filtering device for industrial wastewater purification and a using method thereof.

Background

In the process of purifying industrial wastewater by the flocculation precipitation method, flocs in the treated wastewater need to be filtered. In the existing device for filtering flocculates in wastewater, the filtering element surface is blocked after accumulating more flocculates, so that the passing performance is poor, the filtering efficiency is reduced, the flocculates accumulated on the filtering element surface need to be cleaned regularly, the filtering needs to be stopped regularly, the wastewater treatment efficiency is reduced, the flocculates are cleaned in a time-consuming and labor-consuming manner, the labor intensity is high, and therefore, the filtering device for purifying the industrial wastewater and the using method thereof are provided.

Disclosure of Invention

The present invention is directed to a filtering apparatus for industrial wastewater purification and a method of using the same, which solve the above problems of the background art. In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a filter equipment that industrial waste water purifies usefulness and application method thereof, includes the base, is provided with on the base to be used for carrying out filterable straining device to flocculate in the waste water, is provided with the mechanism of decontaminating on the base, and the mechanism of decontaminating is used for filtering flocculate suction discharge on the straining device, and the mechanism of decontaminating is connected with the straining device transmission, is provided with pump gas mechanism on the mechanism of decontaminating, and pump gas mechanism is used for adopting the mode clearance mediation of blowing to straining device, and the mechanism of decontaminating is connected with pump gas mechanism transmission.

Preferably, the filtering mechanism comprises a filtering cylinder, the central axis of the filtering cylinder is vertically arranged, the filtering cylinder is fixed on a first support, the first support is fixed on a base, the center of a base plate of the filtering cylinder penetrates through and is in fixed-axis rotation connection with a first rotating shaft, the lower end of the first rotating shaft is in fixed-axis rotation connection with the base, the first rotating shaft is in transmission connection with the dirt cleaning mechanism, a shaft sleeve is fixed on the bottom surface of the base plate of the filtering cylinder, the first rotating shaft is inserted in the shaft sleeve and can rotate in the shaft sleeve in a fixed-axis manner, the upper end of the first rotating shaft is vertical to and fixedly connected with the center of the bottom surface of the filtering screen, the filtering screen can rotate in a fixed-axis manner in the filtering cylinder, and the side edge of the filtering screen is attached to the inner wall of the filtering cylinder.

Preferably, a second support is fixed on the base, a water inlet pipe used for conveying the wastewater after flocculation treatment to the filter cylinder is fixed at the upper end of the second support, the water outlet end of the water inlet pipe is located above the filter screen, a water passing hole corresponding to the water outlet end of the water inlet pipe is formed in the bottom plate of the filter cylinder, the lower port of the water passing hole is fixed and communicated with the drainage pipe, a plurality of air holes are formed in the bottom plate of the filter cylinder, the air holes and the water passing hole are located on two sides of the first rotating shaft respectively, and the air holes are communicated with the air pumping mechanism.

Preferably, the mechanism of decontaminating is including fixing the support three on the base, and the three vertical settings of support, and perpendicular and fixedly connected with guide bar on the support three, and the guide bar bottom is fixed with the motor, and perpendicular and dead axle rotation is connected with pivot four on the support three, and pivot four parallels with the guide bar, and the motor is connected with the transmission of pivot four.

Preferably, the third support is rotatably connected with a third rotating shaft through a fixed shaft, the third rotating shaft is located below the fourth rotating shaft, the third rotating shaft is parallel to the fourth rotating shaft, the fourth rotating shaft is in transmission connection with the third rotating shaft through a second belt pulley group, the third support is vertically and fixedly connected with a first cantilever, the first cantilever is rotatably connected with a second rotating shaft, the second rotating shaft is parallel to the first rotating shaft, the second rotating shaft is in transmission connection with the first rotating shaft through a first belt pulley group, and the second rotating shaft is in transmission connection with the third rotating shaft through a bevel gear group.

Preferably, sliding connection has the balladeur train on the guide bar, and the balladeur train is connected with the transmission of pump gas mechanism, and the lower extreme fixedly connected with platform of balladeur train, the platform is located the pivot four and between the guide bar, and the platform parallels with the guide bar, is fixed with the suction pump on the platform, and the inlet outlet end of suction pump is fixed respectively and is led to there are sewage suction pipe and blow off pipe, and the sewage suction pipe is used for taking away the flocculate of the position that the upper surface of filter screen corresponds with the gas pocket, and the flocculate of sewage suction pipe suction is discharged to the blow off pipe.

Preferably, a first vertical downward hanging bracket and a second vertical downward hanging bracket are fixed on the bottom surface of the platform, a lower end fixed shaft of the first hanging bracket is rotatably connected with a worm, a fourth rotating shaft shares a central axis with the worm and penetrates through two ends of the worm, convex edges moving along the central axis of the fourth rotating shaft are fixed on the side wall of the fourth rotating shaft, key grooves corresponding to the convex edges are formed in the inner side wall of the worm, the convex edges are inserted in the key grooves, the worm can slide on the fourth rotating shaft, the lower end fixed shaft of the second hanging bracket is rotatably connected with a turbine, the worm is meshed with the turbine and is vertically and fixedly connected with a second cantilever on a third support, the fixed shaft of the second cantilever is rotatably connected with one end of a connecting rod, and one end of the connecting rod, far away from the center of circle, of the turbine is rotatably connected with one end, far away from the center of the turbine.

Preferably, the pump gas mechanism includes the cylinder, and the one end of cylinder is vertical and fixed connection on support three, and the central axis and the guide bar of cylinder parallel, sliding connection has the piston board in the cylinder, and one side of piston board is vertical and fixed connection push rod, and the push rod is vertical and fixed connection with the balladeur train.

Preferably, the side wall of the cylinder barrel is fixedly communicated with a first check valve and an air pipe, the air pipe is fixedly communicated with the air holes, the conduction direction of the first check valve points to the inside of the cylinder barrel, and the conduction direction of the second check valve points to the air holes.

In addition, the application also provides a use method of the filtering device for purifying the industrial wastewater, which comprises the following steps:

the method comprises the following steps: the sewage disposal mechanism drives the filtering mechanism to filter the wastewater after flocculation treatment;

step two: the flocculate on the filtering mechanism is sucked and cleaned through the decontamination mechanism;

step three: the filtering mechanism is started to perform back-blowing cleaning by the dirt cleaning mechanism driving the air pumping mechanism.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, the sewage disposal mechanism drives the filtering mechanism to filter the flocculated wastewater, and the clean filtering area is positioned below the water inlet pipe in real time, so that the wastewater can be efficiently filtered, and the wastewater treatment efficiency and effect are improved;

according to the invention, the cleaning mechanism is used for automatically sucking and cleaning flocculates on the filtering mechanism in real time, so that the high-efficiency filtering effect of the filtering net is kept in real time, the machine does not need to be stopped, the continuous work of the whole device is realized, the treatment efficiency of the waste water is improved, and the cleaning difficulty and the labor intensity of the flocculates are reduced;

according to the invention, the cleaning mechanism drives the air pumping mechanism to start the back-blowing cleaning of the filtering mechanism, and the flocculate blocked in the pores of the filtering screen is blown out, so that the cleaning mechanism can thoroughly suck the flocculate on the filtering screen, the cleaning effect of the filtering screen is improved, the efficient filtering effect of the filtering screen is maintained, the treatment efficiency of wastewater is improved, and the cleaning difficulty and labor intensity of the flocculate are reduced.

Drawings

FIG. 1 is a first schematic view of an assembly structure according to the present invention;

FIG. 2 is a second schematic view of the final assembly structure of the present invention;

FIG. 3 is a schematic cross-sectional view of the cylinder barrel of the present invention;

FIG. 4 is a schematic view of a fourth embodiment of the present invention;

fig. 5 is a side view of the worm structure of the present invention.

In the figure: 1. a base; 2. a first bracket; 3. a filter cartridge; 4. a shaft sleeve; 5. a first rotating shaft; 6. a filter screen; 7. water passing holes; 8. a drain pipe; 9. a second bracket; 10. a water inlet pipe; 11. air holes; 12. a second one-way valve; 13. a first belt pulley group; 14. a first cantilever; 15. a second rotating shaft; 16. a bevel gear set; 17. a rotating shaft III; 18. a third bracket; 19. a second belt pulley group; 20. a guide bar; 21. a motor; 22. a carriage; 23. a platform; 24. a suction pump; 25. a sewage suction pipe; 26. a blow-off pipe; 27. a rotating shaft IV; 28. a rib; 29. a worm; 30. a first hanging bracket; 31. a second hanging bracket; 32. a turbine; 33. a connecting rod; 34. a second cantilever; 35. a cylinder barrel; 36. a piston plate; 37. a push rod; 38. a one-way valve I; 39. a keyway; 40. the trachea.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Referring to fig. 1 to 5, the present invention provides a technical solution:

the utility model provides a filter equipment that industrial waste water purifies usefulness, includes base 1, is provided with on the base 1 to be used for carrying out filterable straining device to flocculate in the waste water, is provided with the mechanism of decontaminating on the base 1, and the mechanism of decontaminating is used for to straining device on filterable flocculate suction discharge, and the mechanism of decontaminating is connected with the straining device transmission, is provided with pump gas mechanism in the mechanism of decontaminating, and pump gas mechanism is used for adopting the mode clearance mediation of blowing to straining device, and the mechanism of decontaminating is connected with pump gas mechanism transmission.

In this embodiment, as shown in fig. 1 and 2, the filtering mechanism includes a filter cartridge 3, a central axis of the filter cartridge 3 is vertically disposed, the filter cartridge 3 is fixed on a first support 2, the first support 2 is fixed on a first base 1, a central portion of a bottom plate of the filter cartridge 3 penetrates through and is connected with a first rotating shaft 5 in a fixed-axis rotating manner, a lower end of the first rotating shaft 5 is connected to the first base 1 in a fixed-axis rotating manner, the first rotating shaft 5 is connected with the dirt removing mechanism in a driving manner, a shaft sleeve 4 is fixed on a bottom surface of the bottom plate of the filter cartridge 3, the first rotating shaft 5 is inserted into the shaft sleeve 4 and can rotate in the shaft sleeve 4 in a fixed-axis manner, an upper end of the first rotating shaft 5 is vertical to and is fixedly connected with a center of a bottom surface of the filter screen, the filter screen can rotate in a fixed-axis manner in the filter cartridge 3, and a side edge of the filter screen is attached to an inner wall of the filter cartridge 3.

In this embodiment, as shown in fig. 1 and 2, a second bracket is fixed on the base 1, a water inlet pipe 10 for conveying flocculated wastewater into the filter cartridge 3 is fixed at the upper end of the second bracket, a water outlet end of the water inlet pipe 10 is located above the filter screen, a water through hole corresponding to the water outlet end of the water inlet pipe 10 is formed in a bottom plate of the filter cartridge 3, a lower port of the water through hole is fixed and communicated with the drainage pipe, a plurality of air holes 11 are formed in the bottom plate of the filter cartridge 3, the air holes 11 and the water through hole are respectively located on two sides of the first rotating shaft 5, and the air holes 11 are communicated with the air pumping mechanism.

In this embodiment, as shown in fig. 1 and 2, the trash cleaning mechanism includes a third bracket 18 fixed on the base 1, the third bracket 18 is vertically disposed, a guide rod 20 is vertically and fixedly connected to the third bracket 18, a motor 21 is fixed at the bottom of the guide rod 20, a fourth rotating shaft 27 is vertically and rotatably connected to the third bracket 18 in a fixed-axis manner, the fourth rotating shaft 27 is parallel to the guide rod 20, and the motor 21 is in transmission connection with the fourth rotating shaft 27.

In this embodiment, as shown in fig. 1 and fig. 2, a third rotating shaft 17 is rotatably connected to the third support 18 in a fixed axis manner, the third rotating shaft 17 is located below the fourth rotating shaft 27, the third rotating shaft 17 is parallel to the fourth rotating shaft 27, the fourth rotating shaft 27 is in transmission connection with the third rotating shaft 17 through a second pulley set 19, a first cantilever 14 is vertically and fixedly connected to the third support 18, a second rotating shaft 15 is rotatably connected to the first cantilever 14 in a fixed axis manner, the second rotating shaft 15 is parallel to the first rotating shaft 5, the second rotating shaft 15 is in transmission connection with the first rotating shaft 5 through a first pulley set 13, and the second rotating shaft 15 is in transmission connection with the third rotating shaft 17 through a bevel gear set 16.

In this embodiment, as shown in fig. 1 and 2, a sliding frame 22 is slidably connected to the guide rod 20, the sliding frame 22 is in transmission connection with the air pumping mechanism, a platform 23 is fixedly connected to the lower end of the sliding frame 22, the platform 23 is located between the four rotating shafts 27 and the guide rod 20, the platform 23 is parallel to the guide rod 20, a suction pump 24 is fixed to the platform 23, a suction pipe 25 and a drainage pipe 26 are respectively fixed and communicated to the inlet and outlet ends of the suction pump 24, the drainage pipe 25 is used for pumping away flocs on the upper surface of the filter screen at the position corresponding to the air hole 11, and the drainage pipe 26 discharges the flocs pumped by the suction pipe 25.

In this embodiment, as shown in fig. 1, fig. 2, fig. 4, and fig. 2, a first vertical downward hanger 30 and a second vertical downward hanger 31 are fixed on a bottom surface of the platform 23, a worm 29 is connected to a lower end of the first hanger 30 in a fixed-axis manner, the fourth rotating shaft 27 and the worm 29 share a central axis and penetrate through two ends of the worm 29, a rib 28 extending along the central axis of the fourth rotating shaft 27 is fixed on a side wall of the fourth rotating shaft 27, a key groove 39 corresponding to the rib 28 is formed on an inner side wall of the worm 29, the rib 28 is inserted into the key groove 39, the worm 29 can slide on the fourth rotating shaft 27, the lower end of the second hanger 31 is connected to a worm wheel 32 in a fixed-axis manner, the worm 29 is connected to the worm wheel 32 in a meshed manner, a second cantilever 34 is fixed on the third bracket 18 in a vertical manner, one end of the second cantilever 34 is connected to a fixed-axis manner, and one end of the connecting rod 33 is connected to an end of the second cantilever 34 in a fixed-axis manner, and one end of the connecting rod 33 is connected to an end of the worm wheel 32 far away from a center of the center.

In this embodiment, as shown in fig. 1, 2 and 3, the pumping mechanism includes a cylinder 35, one end of the cylinder 35 is vertically and fixedly connected to the third bracket 18, a central axis of the cylinder 35 is parallel to the guide rod 20, a piston plate 36 is slidably connected to the cylinder 35, one side of the piston plate 36 is vertically and fixedly connected to a push rod 37, and the push rod 37 is vertically and fixedly connected to the carriage 22.

In this embodiment, as shown in fig. 1, 2 and 3, a first check valve 38 and an air pipe 40 are fixed and communicated on a side wall of the cylinder 35, the air pipe 40 is fixed and communicated with the plurality of air holes 11, a conducting direction of the first check valve 38 points to the inside of the cylinder 35, and a conducting direction of the second check valve 12 points to the air holes 11.

The use method and the advantages of the invention are as follows: when the filtering device for purifying industrial wastewater is used, the working process is as follows:

the method comprises the following steps: as shown in fig. 1, fig. 2, fig. 4 and fig. 5, the flocculated wastewater is output into the filter cartridge 3 through the water inlet pipe 10 and filtered by the filter screen 6 to block flocculates on the filter screen 6, and the filtered water enters the drain pipe 8 through the corresponding water through holes 7 and is discharged through the drain pipe 8, so that the flocculates in the flocculated wastewater are filtered;

the motor 21 and the suction pump 24 are started to work while the filter screen 6 filters, the motor 21 drives the rotating shaft IV 27 to rotate after working, so that the fourth rotating shaft 27 drives the third rotating shaft 17 to rotate through the second belt pulley set 19, the third rotating shaft 17 drives the second rotating shaft 15 to rotate through the bevel gear set 16, so that the second rotating shaft 15 drives the first rotating shaft 5 to rotate through the first belt pulley set 13, the rotation of the first rotating shaft 5 synchronously drives the filter screen 6 to rotate, the rotation of the filter screen 6 causes the filter area with flocculate reserved at the corresponding position of the water through hole 7 to move to the air hole 11, so that the cleaning mechanism sucks and discharges the flocculate and moves the cleaned filtering area to the water through hole 7, thereby realizing the filtration of flocculate in the wastewater after flocculation treatment and positioning a clean filtration area below the water inlet pipe 10 in real time, so as to keep the efficient filtration of the wastewater and improve the treatment efficiency and effect of the wastewater;

step two: as shown in the first step, the rotation of the fourth shaft 27 drives the worm 29 to rotate synchronously through the matching transmission of the protruding ridge 28 and the key groove 39, the rotation of the worm 29 drives the turbine 32 to rotate synchronously, the rotation of the turbine 32 applies pushing or pulling force to the second cantilever 34 through the connecting rod 33, so that the turbine 32 approaches or separates from the second cantilever 34 relative to the second cantilever 34, further the turbine 32 drives the platform 23, the first hanger 30, the worm 29 and the carriage 22 to approach or separate from the second cantilever 34 synchronously through the second hanger 31, the platform 23 drives the suction pump 24 to approach or separate from the second cantilever 34 synchronously in the process of approaching or separating from the second cantilever 34, further the suction pump 24 sucks flocs on the filter screen 6 through the suction pipe 25 and discharges the flocs through the sewage discharge pipe 26, and simultaneously the filter screen 6 rotates continuously, so that the suction pipe 25 sucks the flocs on the filter screen 6 clean and discharges the flocs through the sewage discharge pipe 26 continuously in real time, the efficient filtering effect of the filter screen 6 is maintained in real time, flocs on the filter screen 6 are automatically cleaned without stopping the machine, the continuous work of the whole device is realized, the treatment efficiency of wastewater is improved, and the cleaning difficulty and labor intensity of the flocs are reduced;

step three: as shown in step two, in the process that the carriage 22 approaches or leaves the cantilever two 34, the push rod 37 applies a pushing force or a pulling force to the piston plate 36, as shown in fig. 1, fig. 2 and fig. 3, so that the push rod 37 drives the piston plate 36 to move to the right or to the left in the cylinder 35, when the piston plate 36 moves to the right in the cylinder 35, the air in the cylinder 35 is compressed, since the conducting direction of the check valve one 38 points to the inside of the cylinder 35, and the conducting direction of the check valve two 12 points to the air hole 11, the compressed air enters the air hole 11 through the air pipe 40 and the check valve two 12, and is blown out upwards from the bottom of the filter screen 6 through the air hole 11, the bottom of the blown air flow filter screen 6 blows out flocs blocked in the pores of the filter screen 6, thereby playing a role of pneumatic back-blowing cleaning to the filter screen 6, so that the cleaning mechanism can more thoroughly suck the flocs on the filter screen 6, the cleaning effect of the filter screen 6 is improved, the efficient filtering effect of the filter screen 6 is kept, the treatment efficiency of the wastewater is improved, and the cleaning difficulty and the labor intensity of flocculate are reduced;

when the piston plate 36 moves to the left in the cylinder 35, a suction force is generated in the cylinder 35, the conduction direction of the first check valve 38 points to the inside of the cylinder 35, and the conduction direction of the second check valve 12 points to the air hole 11, so that the suction force sucks external air into the cylinder 35 through the first check valve 38, automatic supplement of air is realized, the reciprocating is performed, the filter screen 6 is cleaned by pneumatic back blowing continuously, the suction force is prevented from generating downward suction force on the filter screen 6 through the air hole 11 by the action of the second check valve 12, and flocculate can be sucked cleanly by the floc suction pipe 25 more easily.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Claims

1. The utility model provides a filter equipment of industrial waste water purification usefulness, includes base (1), its characterized in that: the sewage treatment device is characterized in that a filtering mechanism used for filtering flocculates in wastewater is arranged on the base (1), a cleaning mechanism is arranged on the base (1) and used for sucking and discharging the filtered flocculates on the filtering mechanism, the cleaning mechanism is in transmission connection with the filtering mechanism, an air pumping mechanism is arranged on the cleaning mechanism and used for cleaning and dredging the filtering mechanism in an air blowing mode, the cleaning mechanism is in transmission connection with the air pumping mechanism, the filtering mechanism comprises a filter cylinder (3), the central axis of the filter cylinder (3) is vertically arranged, the center of a bottom plate of the filter cylinder (3) penetrates through and is in fixed-axis rotation connection with a first rotating shaft (5), the lower end of the first rotating shaft (5) is in fixed-axis rotation connection with the base (1), the first rotating shaft (5) is in transmission connection with the cleaning mechanism, and the upper end of the first rotating shaft (5) is vertically and fixedly connected with the center of the bottom surface of the filter screen (6), the filter screen (6) can rotate in the filter cartridge (3) in a fixed axis manner, the side edge of the filter screen (6) is attached to the inner wall of the filter cartridge (3), a second support (9) is fixed on the base (1), an inlet pipe (10) for conveying flocculated wastewater into the filter cartridge (3) is fixed at the upper end of the second support (9), the water outlet end of the inlet pipe (10) is positioned above the filter screen (6), a water through hole (7) corresponding to the water outlet end of the inlet pipe (10) is formed in the bottom plate of the filter cartridge (3), the lower port of the water through hole (7) is fixed and communicated with the drainage pipe (8), a plurality of air holes (11) are formed in the bottom plate of the filter cartridge (3), the air holes (11) and the water through hole (7) are respectively positioned on two sides of the first rotating shaft (5), the air holes (11) are communicated with the air pumping mechanism, the sewage cleaning mechanism comprises a third support (18) fixed on the base (1), a guide rod (20) is vertically and fixedly connected to the third support (18), a motor (21) is fixed at the bottom of the guide rod (20), a rotating shaft four (27) is vertically and fixedly connected to the third support (18) in a rotating manner, the rotating shaft four (27) is parallel to the guide rod (20), the motor (21) is in transmission connection with the rotating shaft four (27), a rotating shaft three (17) is rotatably connected to the third support (18) in a fixed shaft manner, the rotating shaft three (17) is located below the rotating shaft four (27), the rotating shaft three (17) is parallel to the rotating shaft four (27), the rotating shaft four (27) is in transmission connection with the rotating shaft three (17) through a belt pulley set two (19), a cantilever one (14) is vertically and fixedly connected to the third support (18), a rotating shaft two (15) is rotatably connected to the cantilever one (14), and the rotating shaft two (15) is parallel to the rotating shaft one (5), the second rotating shaft (15) is in transmission connection with the first rotating shaft (5) through the first belt pulley group (13), the second rotating shaft (15) is in transmission connection with the third rotating shaft (17) through the bevel gear group (16), the guide rod (20) is connected with the sliding frame (22) in a sliding mode, the sliding frame (22) is in transmission connection with the air pumping mechanism, the lower end of the sliding frame (22) is fixedly connected with the platform (23), the suction pump (24) is fixed on the platform (23), the inlet and outlet ends of the suction pump (24) are respectively fixed and communicated with a sewage suction pipe (25) and a sewage discharge pipe (26), the sewage suction pipe (25) is used for pumping away flocculates on the upper surface of the filter screen (6) at the position corresponding to the air hole (11), and the sewage discharge pipe (26) discharges flocculates pumped by the sewage suction pipe (25); a first vertical downward hanging bracket (30) and a second vertical downward hanging bracket (31) are fixed on the bottom surface of the platform (23), a worm (29) is connected to the lower end of the first hanging bracket (30) in a fixed-shaft rotating mode, the fourth rotating shaft (27) and the worm (29) share the central axis and penetrate through two ends of the worm (29), a convex rib (28) along the central axis of the fourth rotating shaft (27) is fixed on the side wall of the fourth rotating shaft (27), a key groove (39) corresponding to the convex rib (28) is formed in the inner side wall of the worm (29), the convex rib (28) is inserted into the key groove (39), the worm (29) can slide on the fourth rotating shaft (27), the lower end of the second hanging bracket (31) is connected with a turbine (32) in a fixed-shaft rotating mode, the worm (29) is connected with the turbine (32) in a meshed mode, the third bracket (18) is vertically fixed with the second cantilever (34), and the second cantilever (34) is connected with one end of a connecting rod (33) in a fixed-shaft rotating mode, one end, far away from the second cantilever (34), of the connecting rod (33) is fixedly connected to one end, far away from the center of a circle, of the turbine (32) in a fixed-shaft rotating mode, the air pumping mechanism comprises a cylinder barrel (35), one end of the cylinder barrel (35) is vertically and fixedly connected to the third support (18), a piston plate (36) is connected to the cylinder barrel (35) in a sliding mode, one side of the piston plate (36) is vertically and fixedly connected with a push rod (37), the push rod (37) is perpendicular and fixedly connected with the sliding frame (22), a first check valve (38) and an air pipe (40) are fixed and communicated to the side wall of the cylinder barrel (35), the air pipe (40) is fixed and communicated with the air holes (11), the conducting direction of the first check valve (38) points to the inside of the cylinder barrel (35), and the conducting direction of the second check valve (12) points to the air holes (11);

when in work, the first step is as follows: the wastewater after flocculation treatment is output into the filter cylinder (3) through the water inlet pipe (10) and filtered by the filter screen (6) to stop flocculates on the filter screen (6), and the filtered water liquid enters the drain pipe (8) through the corresponding water through holes (7) and is discharged through the drain pipe (8); simultaneously starting a motor (21) and a suction pump (24) to work, driving a rotating shaft four (27) to rotate after the motor (21) works, driving a rotating shaft three (17) to rotate through a belt pulley group two (19), driving a rotating shaft two (15) to rotate through a bevel gear group (16) by the rotation of the rotating shaft three (17), driving a rotating shaft one (5) to rotate through a belt pulley group one (13) by the rotating shaft two (15), synchronously driving a filter screen (6) to rotate through the rotation of the rotating shaft one (5), enabling a filter area with flocculates reserved at the corresponding position of a water through hole (7) to move to an air hole (11) through the rotation of the filter screen (6), sucking and discharging the flocculates through a decontamination mechanism, and moving the cleaned filter area to the water through hole (7); step two: as shown in the first step, the rotation of the rotating shaft four (27) enables the rotating shaft four (27) to synchronously drive the worm (29) to rotate through the matching transmission of the convex ribs (28) and the key grooves (39), the rotation of the worm (29) synchronously drives the turbine (32) to rotate, the rotation of the turbine (32) applies pushing force or pulling force to the cantilever two (34) through the connecting rod (33), the turbine (32) approaches or separates from the cantilever two (34) relative to the cantilever two, the turbine (32) drives the platform (23), the hanger one (30), the worm (29) and the sliding frame (22) to approach or separate from the cantilever two (34) synchronously through the hanger two (31), the platform (23) drives the suction pump (24) to approach or separate from the cantilever two (34) synchronously in the process of approaching or separating from the cantilever two (34), the suction pump (24) sucks flocculate on the filter screen (6) through the sewage suction pipe (25) and discharges the flocculate from the sewage pipe (26), meanwhile, the filter screen (6) rotates continuously, and the sewage suction pipe (25) sucks flocculate on the filter screen (6) clean continuously in real time and discharges the flocculate from the sewage discharge pipe (26); step three: as shown in the second step, in the process that the sliding frame (22) approaches to or leaves the cantilever II (34), the push rod (37) applies pushing force or pulling force to the piston plate (36), the push rod (37) drives the piston plate (36) to move to the right or left in the cylinder barrel (35), when the piston plate (36) moves to the right in the cylinder barrel (35), air in the cylinder barrel (35) is compressed, the conduction direction of the one-way valve I (38) points to the inside of the cylinder barrel (35), the conduction direction of the one-way valve II (12) points to the air hole (11), the compressed air enters the air hole (11) through the air pipe (40) and the one-way valve II (12), and is blown out upwards from the bottom of the filter screen (6) through the air hole (11), and the bottom of the blown air flow filter screen (6) blocks flocs blown out in the air hole of the filter screen (6); when the piston plate (36) moves left in the cylinder barrel (35), suction force is generated in the cylinder barrel (35), the conduction direction of the one-way valve I (38) points to the inside of the cylinder barrel (35), the conduction direction of the one-way valve II (12) points to the air hole (11), external air is sucked into the cylinder barrel (35) through the one-way valve I (38) by the suction force, automatic supplement of air is achieved, and the filter screen (6) is cleaned in a pneumatic back-blowing mode repeatedly in the way.

2. A filtering apparatus for purifying industrial wastewater according to claim 1, characterized in that: the filter cartridge (3) is fixed on the first support (2), and the first support (2) is fixed on the base (1).

3. A filtering apparatus for purifying industrial wastewater according to claim 2, characterized in that: a shaft sleeve (4) is fixed on the bottom surface of the bottom plate of the filter cartridge (3), and the first rotating shaft (5) is inserted into the shaft sleeve (4) and can rotate in the shaft sleeve (4) in a fixed shaft mode.

4. A filtering apparatus for purifying industrial wastewater according to claim 3, characterized in that: the third bracket (18) is vertically arranged.

5. The filtering apparatus for purifying industrial wastewater according to claim 4, wherein: the platform (23) is positioned between the four rotating shafts (27) and the guide rod (20), and the platform (23) is parallel to the guide rod (20).

6. The filtering apparatus for purifying industrial wastewater according to claim 5, wherein: the central axis of the cylinder barrel (35) is parallel to the guide rod (20).

7. The use of a filtering device for industrial wastewater purification according to any one of claims 3 to 6, characterized in that: the method comprises the following steps: