Self-cleaning device for ultrafiltration membrane assembly

Abstract

The invention relates to the field of filter membrane cleaning, in particular to an ultrafiltration membrane assembly self-cleaning device which comprises a clamping washing table, a sewage backflow groove detachably and fixedly installed on the edge of the bottom of the outer side of the clamping washing table, and washing arms movably adjusted on the surfaces of the two sides of the clamping washing table. The ultrafiltration membrane assembly is movably connected to the inner side wall face of the clamping washing table in a sleeving mode, a swing arm is connected to the surface of the top of the washing arm in a swinging mode, and a second motor is fixedly installed at the other end of the swing arm. At the moment, the surface of a rotating cylinder is in lap joint with the surfaces of the two sides of the ultrafiltration membrane assembly by twisting a swinging arm, and the rotating cylinder is rotated in cooperation with a second motor, so that a collision soft block at the output end of the rotating cylinder collides with the surface of the ultrafiltration membrane assembly, and an ultrafiltration membrane thin tube in the ultrafiltration membrane assembly swings and bends under the collision of the collision soft block; and the bending can deform impurities accumulated on the surface of the ultrafiltration membrane.

Description

Technical Field

[0001] The invention belongs to the technical field of filter membrane cleaning, in particular to a self-cleaning device for an ultrafiltration membrane assembly. Background Art

[0002] Ultrafiltration is a membrane separation technology that purifies and separates solutions. Driven by pressure difference, the ultrafiltration membrane only allows water, inorganic salts and small molecular organic matter in the solution to pass through, while retaining macromolecular substances such as suspended matter, colloids, proteins and microorganisms in the solution on the outer surface, thereby achieving the purpose of purification and separation. As the operation time increases, membrane contamination problems are bound to occur, so certain methods must be taken to remove pollutants on the membrane surface or in the membrane pores to restore water production.

[0003] A patent with publication number CN110559864B discloses an ultrafiltration membrane self-cleaning device, which includes a water inlet system, an ultrafiltration membrane system, a backwash system and a hydraulic automatic control system; the ultrafiltration membrane system includes an ultrafiltration membrane assembly, a water production pipe and a backwash drainage pipe, and the water inlet of the ultrafiltration membrane assembly is connected to the water inlet system; the backwash system includes a backwash water tank and a siphon breaking bucket arranged in the backwash water tank, an overflow port is provided on the upper part of the backwash water tank, a siphon pipe is provided between the siphon breaking bucket and the backwash water tank, and the other end of the water production pipe is connected to the backwash water tank; the hydraulic automatic control system includes a siphon outer sleeve, a siphon inner sleeve, a siphon auxiliary pipe, and a siphon breaking pipe. The ultrafiltration membrane self-cleaning device provided by the present invention can effectively clean the membrane filaments, reduce the use of valves and pumps, reduce energy consumption, and reduce operating costs.

[0004] In the current prior art, the existing ultrafiltration membranes are generally flushed by forward suction, backwashing and immersion, which can only clean out most of the impurities. However, some solid impurities remaining on the surface of the ultrafiltration membrane and impurities inside the membrane pores will increase the viscosity of the surface after being wetted, thereby making it impossible to effectively clean the impurities on the surface of the ultrafiltration membrane.

[0005] To this end, the present invention provides a self-cleaning device for an ultrafiltration membrane assembly. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: the self-cleaning device of an ultrafiltration membrane assembly described in the present invention comprises a clamping flushing platform and a sewage return trough detachably fixedly installed on the outer bottom edge position of the clamping flushing platform, a flushing arm movably adjusted on the two side surfaces of the clamping flushing platform, an ultrafiltration membrane assembly movably sleeved on the inner wall surface of the clamping flushing platform, a swing arm swingably connected to the top surface of the flushing arm, a motor 2 is fixedly installed on the other end of the swing arm, a rotating cylinder movably sleeved on the outer surface of the ultrafiltration membrane assembly is fixedly connected to the output end of the motor 2, an impact soft block is provided on the outer surface of the rotating cylinder, a support roller is fixedly installed on one end of the rotating cylinder, and a scraping and cleaning soft strip movably overlapped on the outer surface of the ultrafiltration membrane assembly is fixedly connected to the outer surface of the support roller.

[0008] Preferably, a clamping groove movably sleeved on the outer surface of the ultrafiltration membrane assembly is provided on the inner wall surfaces of the upper and lower sides of the clamping flushing station and at the middle position, and a diversion water groove is provided on the inner wall surface of the bottom of the clamping flushing station and at the edge positions of the clamping groove on both sides.

[0009] Preferably, multiple groups of snap-in grooves are provided on both side surfaces of the snap-in washing table, and a motor 1 is fixedly installed on the top surface of the snap-in washing table and at the top edge position of the snap-in grooves, and the output end of the motor 1 extends through the snap-in washing table to the inner wall surface of a group of snap-in grooves.

[0010] Preferably, a threaded rod movably sleeved on the inner wall of the clamping groove is fixedly installed on the output end of the motor one, and a limiting rod two is fixedly connected to the inner wall of another group of the clamping grooves, and the outer surfaces of the threaded rod and the limiting rod two are movably sleeved on the outer surface of the flushing arm.

[0011] Preferably, a limiting strip is fixedly connected to one side surface of the clamping washing station and at the edge position of the entrance of the clamping groove, an elastic wire is fixedly connected to the bottom inner wall of the limiting strip, and a downward pressure baffle fixedly connected to the top of the elastic wire is movably sleeved on the inner wall of the limiting strip.

[0012] Preferably, a retractable rod is movably sleeved on the bottom surface of the downward pressure baffle, a limiting rod is fixedly connected to one side surface of the clamping washing station, the other end of the retractable rod is movably sleeved on the outer surface of the limiting rod, and a pedal rod is fixedly connected to the outer surface of the retractable rod.

[0013] Preferably, a diversion chute is provided on the inner wall surface of the sewage return trough, a sewage filter circulator is fixedly installed on one side surface of the sewage return trough, and a reflux pipe arranged on the top surface of the flushing arm is fixedly connected to the output end of the sewage filter circulator.

[0014] Preferably, an elastic strip is fixedly connected to the outer surface of the rotating cylinder, and the other end of the elastic strip is fixedly connected to the outer surface of the impact soft block.

[0015] The beneficial effects of the present invention are as follows:

[0016] 1. The self-cleaning device of an ultrafiltration membrane assembly described in the present invention, at this time, the surface of the rotating drum is overlapped on the two side surfaces of the ultrafiltration membrane assembly by twisting the swing arm, and the rotating drum is rotated in cooperation with the motor two, so that the impact soft block on the output end of the rotating drum collides with the surface of the ultrafiltration membrane assembly, and under the impact of the impact soft block, the ultrafiltration membrane capillary inside the ultrafiltration membrane assembly will swing and bend, and the bending will cause the impurities accumulated on the surface of the ultrafiltration membrane to deform, thereby reducing the contact area between the impurities and the surface of the ultrafiltration membrane, and then under the impact of the chemical cleaning agent, the raised solid impurities are cleaned and peeled off, so as to achieve the effect of using the impact of the impact soft block to deform and bend the ultrafiltration membrane, and using the deformation and bending of the ultrafiltration membrane to deform with the impurities and then fall off the impurities, and under the flushing of the chemical cleaning agent, the impurities fall off;

[0017] 2. The self-cleaning device of an ultrafiltration membrane assembly described in the present invention clamps the ultrafiltration membrane assembly into the inside of the clamping groove so that the upper and lower side surfaces of the ultrafiltration membrane assembly are completely limited, and a pair of threaded rods are rotated in cooperation with a motor, thereby driving the flushing arms on the outer surfaces of the threaded rods to slide up and down on the two side surfaces of the clamping flushing platform, and at the same time, the position of the flushing arms is limited in cooperation with the limiting rods to reduce the excessive pressure of the threaded rods. At this time, the chemical cleaning agent is injected into the return pipe in cooperation with the sewage filter circulator. When the chemical cleaning agent enters the inside of the flushing arm, it will be directly sprayed onto the surface of the ultrafiltration membrane assembly. The chemical cleaning agent will dilute the sludge and solid impurities adhered to the surface of the ultrafiltration membrane assembly. Under the impact of the liquid of the chemical cleaning agent, the diluted and cleaned sludge impurities on the filter membrane surface inside the ultrafiltration membrane assembly are flushed down, achieving the effect of promoting the cleaning of sludge solid impurities by the chemical reaction between the chemical cleaning agent and the sludge impurities;

[0018] 3. The self-cleaning device of an ultrafiltration membrane assembly described in the present invention, when the ultrafiltration membrane inside the ultrafiltration membrane assembly has cleaned up impurities, the employee cooperates with the employee to step on the pedal rod downward, and the two ends of the contraction rod are respectively arranged on the surface of the limit rod 1 and the downward pressure baffle, so that when the contraction rod is pressed down with the limit rod 1 as the center point, the contraction rod will contract, and the contracted contraction rod will drive the downward pressure baffle to move downward on the inner wall surface of the limit strip. At this time, the surface of the downward pressure baffle will be withdrawn from the surface of the ultrafiltration membrane assembly. When one side surface of the ultrafiltration membrane assembly is no longer limited, after the ultrafiltration membrane assembly inside the clamping groove is replaced, after the pedal rod is released, the downward pressure baffle will be moved back to the entrance edge position of the clamping groove under the push of the elastic wire to seal it, thereby redefining the position of the ultrafiltration membrane assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 is a stereogram of the present invention;

[0021] Figure 2 It is a three-dimensional diagram of the rising flushing arm in the present invention;

[0022] Figure 3 It is a partial cutaway stereoscopic view of the sewage return tank in the present invention;

[0023] Figure 4 It is a three-dimensional diagram of the clamping washing station in the present invention;

[0024] Figure 5 It is a partial cutaway stereoscopic view of the rotating drum in the present invention;

[0025] Figure 6 It is a three-dimensional diagram of the downward pressure baffle in the present invention.

[0026] In the figure: 11, clamping flushing station; 111, clamping groove; a1, limit strip; a2, elastic wire; a3, downward pressure baffle; a4, retracting rod; a5, limit rod 1; a6, pedal rod; 112, motor 1; 113, threaded rod; 114, limit rod 2; 115, diversion trough; 116, clamping groove; 12, sewage return trough; 121, diversion chute; 122, sewage filter circulator; 123, return pipe; 13, flushing arm; 131, swing arm; 132, motor 2; 133, rotating drum; 134, elastic strip; 135, impact soft block; 136, support roller; 137, scraping and cleaning soft strip; 14, ultrafiltration membrane assembly. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0028] like Figures 1 to 5 As shown, an ultrafiltration membrane assembly self-cleaning device according to an embodiment of the present invention comprises a clamping flushing platform 11 and a sewage return trough 12 detachably fixedly mounted on the outer bottom edge of the clamping flushing platform 11, a flushing arm 13 movably adjusted on the two side surfaces of the clamping flushing platform 11, an ultrafiltration membrane assembly 14 movably sleeved on the inner wall surface of the clamping flushing platform 11, a swing arm 131 is swingably connected to the top surface of the flushing arm 13, a motor 132 is fixedly mounted on the other end of the swing arm 131, and an output of the motor 132 is output. A rotating cylinder 133 movably sleeved on the outer surface of the ultrafiltration membrane assembly 14 is fixedly connected to the outlet end, and an impact soft block 135 is provided on the outer surface of the rotating cylinder 133. A supporting roller 136 is fixedly installed on one end of the rotating cylinder 133, and a scraping and cleaning soft strip 137 movably overlapped on the outer surface of the ultrafiltration membrane assembly 14 is fixedly connected to the outer surface of the rotating cylinder 133. An elastic strip 134 is fixedly connected to the outer surface of the rotating cylinder 133, and the other end of the elastic strip 134 is fixedly connected to the outer surface of the impact soft block 135.

[0029] At this time, the swing arm 131 is twisted to overlap the surface of the rotating cylinder 133 on the two side surfaces of the ultrafiltration membrane assembly 14, and the motor 2 132 is used to rotate the rotating cylinder 133, so that the impact soft block 135 on the output end of the rotating cylinder 133 collides with the surface of the ultrafiltration membrane assembly 14. Under the impact of the impact soft block 135, the ultrafiltration membrane capillary inside the ultrafiltration membrane assembly 14 will swing and bend, and the bending will cause the impurities accumulated on the surface of the ultrafiltration membrane to deform, thereby reducing the contact area between the impurities and the surface of the ultrafiltration membrane, and under the impact of the chemical cleaning agent, the raised solid impurities are cleaned and peeled off, so that the ultrafiltration membrane is deformed and bent by the impact of the impact soft block 135, and the ultrafiltration membrane under the deformation and bending is used. It will deform with the impurities and then fall off the impurities, and under the flushing of chemical cleaning agents, the impurities will fall off, and while the rotating cylinder 133 is rotating, it will drive the scraping and cleaning soft strip 137 on the outer surface of the supporting roller 136 to repeatedly impact the surface of the ultrafiltration membrane, and the scraping and cleaning soft strip 137 will repeatedly impact with the ultrafiltration membrane. Under the repeated impacts, the scraping and cleaning soft strip 137 will rub the surface of the ultrafiltration membrane, and each friction will scrape off part of the impurities on the surface of the ultrafiltration membrane, and driven by the threaded rod 113, the flushing arm 13 moves up and down on the two side surfaces of the clamped flushing station 11, thereby cleaning the impurities of the ultrafiltration membrane on the surface of the ultrafiltration membrane assembly 14 in all directions.

[0030] like Figure 1 to Figure 2 and Figure 4As shown, a clamping groove 116 movably sleeved on the outer surface of the ultrafiltration membrane assembly 14 is provided on the inner wall surface of the upper and lower sides of the clamping flushing station 11 and located in the middle position, a diversion groove 115 is provided on the inner wall surface of the bottom of the clamping flushing station 11 and located on the edge positions of the two sides of the clamping groove 116, a plurality of groups of clamping grooves 111 are provided on the two side surfaces of the clamping flushing station 11, a motor 112 is fixedly installed on the top surface of the clamping flushing station 11 and located at the top edge position of the clamping groove 111, the output end of the motor 112 passes through the clamping flushing station 11 and extends to the inner wall surface of one group of clamping grooves 111, a threaded rod 113 movably sleeved on the inner wall surface of the clamping groove 111 is fixedly installed on the output end of the motor 112, and a limiting rod 2 114 is fixedly connected to the inner wall surface of the other group of clamping grooves 111, and the outer surfaces of the threaded rod 113 and the limiting rod 2 114 are movably sleeved on the outer surface of the flushing arm 13.

[0031] The ultrafiltration membrane assembly 14 is clamped into the inside of the clamping groove 116 so that the upper and lower side surfaces of the ultrafiltration membrane assembly 14 are completely fixed, and the threaded rod 113 is rotated in cooperation with the motor 112, thereby driving the flushing arm 13 on the outer surface of the threaded rod 113 to slide up and down on the two side surfaces of the clamping flushing platform 11, and at the same time, the position of the flushing arm 13 is limited in cooperation with the limit rod 2 114 to reduce the excessive pressure of the threaded rod 113, and at this time, the return pipe 123 is infused with chemical cleaning agents in cooperation with the sewage filter circulator 122. When the chemical cleaning agents enter the inside of the flushing arms 13, they will be directly sprayed onto the surface of the ultrafiltration membrane assembly 14, and the chemical cleaning agents will dilute the sludge and solid impurities adhered to the surface of the ultrafiltration membrane assembly 14. Under the impact of the liquid of the chemical cleaning agents, the sludge impurities diluted and cleaned on the filter membrane surface inside the ultrafiltration membrane assembly 14 are flushed down, thereby achieving the effect of promoting the cleaning of sludge solid impurities by the chemical reaction between the chemical cleaning agents and the sludge impurities.

[0032] like Figure 1 - Figure 2 , Figure 4 and Figure 6 As shown, a limit strip a1 is fixedly connected to one side surface of the clamping washing station 11 and at the edge position of the entrance of the clamping groove 116, an elastic wire a2 is fixedly connected to the inner wall surface of the bottom of the limit strip a1, a downward pressure baffle a3 fixedly connected to the top of the elastic wire a2 is movably sleeved on the inner wall surface of the limit strip a1, a retracting rod a4 is movably sleeved on the bottom surface of the downward pressure baffle a3, a limit rod a5 is fixedly connected to one side surface of the clamping washing station 11, the other end of the retracting rod a4 is movably sleeved on the outer surface of the limit rod a5, and a pedal rod a6 is fixedly connected to the outer surface of the retracting rod a4.

[0033] After the ultrafiltration membrane inside the ultrafiltration membrane assembly 14 has been cleaned of impurities, the employee cooperates with the employee to step on the pedal rod a6 downwards, and the two ends of the contraction rod a4 are respectively arranged on the surfaces of the limit rod a5 and the downward pressure baffle a3, so that when the contraction rod a4 is pressed downward with the limit rod a5 as the center point, the contraction rod a4 will contract, and the contracted contraction rod a4 will drive the downward pressure baffle a3 to move downward on the inner wall surface of the limit strip a1. At this time, the surface of the downward pressure baffle a3 will be peeled off from the surface of the ultrafiltration membrane assembly 14. When one side surface of the ultrafiltration membrane assembly 14 is no longer limited, after the ultrafiltration membrane assembly 14 inside the clamping groove 116 is replaced, after the pedal rod a6 is released, the downward pressure baffle a3 will be moved back to the entrance edge position of the clamping groove 116 under the push of the elastic wire a2, and it will be closed, thereby redefining the position of the ultrafiltration membrane assembly 14.

[0034] like Figures 1 to 3 As shown, a guide chute 121 is arranged on the inner wall surface of the sewage return groove 12, a sewage filter circulator 122 is fixedly installed on one side surface of the sewage return groove 12, and a reflux pipe 123 arranged on the top surface of the flushing arm 13 is fixedly connected to the output end of the sewage filter circulator 122.

[0035] The fallen chemical cleaning agent will flow along the diversion trough 115 toward the two side surfaces of the clamping rinsing table 11, and cooperate with the sewage return trough 12 to recover the fallen chemical cleaning agent. At the same time, the diversion chute 121 on the inner wall of the sewage return trough 12 will divert the chemical cleaning agent, and the chemical cleaning agent will be recovered and filtered through the sewage filter circulator 122, and then recycled through the reflux pipe 123.

[0036] Working principle: The ultrafiltration membrane assembly 14 is clamped into the inside of the clamping groove 116, so that the upper and lower side surfaces of the ultrafiltration membrane assembly 14 are completely fixed, and the motor 112 is used to rotate the threaded rod 113, thereby driving the flushing arm 13 on the outer surface of the threaded rod 113 to slide up and down on the two side surfaces of the clamping flushing platform 11, and the limit rod 2 114 is used to limit the position of the flushing arm 13 to reduce the excessive pressure of the threaded rod 113. At this time, the sewage filter circulator 122 is used to infuse the return pipe 123 with chemical cleaning agents. When the chemical cleaning agents enter the inside of the flushing arms 13, they will be directly sprayed onto the surface of the ultrafiltration membrane assembly 14. The chemical cleaning agents will dilute the sludge and solid impurities adhered to the surface of the ultrafiltration membrane assembly 14. Under the impact of the liquid of the chemical cleaning agents, the diluted and cleaned sludge impurities on the filter membrane surface of the ultrafiltration membrane assembly 14 are flushed down, achieving the effect of using the chemical reaction between the chemical cleaning agents and the sludge impurities to promote the cleaning of sludge solid impurities;

[0037] At this time, the swing arm 131 is twisted to overlap the surface of the rotating cylinder 133 on the two side surfaces of the ultrafiltration membrane assembly 14, and the motor 2 132 is used to rotate the rotating cylinder 133, so that the impact soft block 135 on the output end of the rotating cylinder 133 collides with the surface of the ultrafiltration membrane assembly 14. Under the impact of the impact soft block 135, the ultrafiltration membrane capillary inside the ultrafiltration membrane assembly 14 will swing and bend, and the bending will cause the impurities accumulated on the surface of the ultrafiltration membrane to deform, thereby reducing the contact area between the impurities and the surface of the ultrafiltration membrane, and under the impact of the chemical cleaning agent, the raised solid impurities are cleaned and peeled off, so that the ultrafiltration membrane is deformed and bent by the impact of the impact soft block 135, and the ultrafiltration membrane under the deformation and bending is used. The impurities will be deformed and fall off, and the impurities will fall off under the flushing of the chemical cleaning agent. While the rotating cylinder 133 is rotating, the scraping and cleaning soft strip 137 on the outer surface of the supporting roller 136 will be driven to repeatedly hit the surface of the ultrafiltration membrane, and the scraping and cleaning soft strip 137 will be repeatedly hit against the ultrafiltration membrane. Under the repeated impacts, the scraping and cleaning soft strip 137 will rub the surface of the ultrafiltration membrane, and each friction will scrape off part of the impurities on the surface of the ultrafiltration membrane. Driven by the threaded rod 113, the flushing arm 13 moves up and down on the two side surfaces of the clamping flushing station 11, thereby cleaning the impurities of the ultrafiltration membrane on the surface of the ultrafiltration membrane assembly 14 in all directions.

[0038] The fallen chemical cleaning agent will flow down along the diversion water trough 115 toward the two side surfaces of the clamping rinsing table 11, and cooperate with the sewage return trough 12 to recover the fallen chemical cleaning agent, and cooperate with the diversion chute 121 on the inner wall of the sewage return trough 12 to guide the chemical cleaning agent, and recover and filter the chemical cleaning agent through the sewage filter circulator 122, and then recycle it through the return pipe 123;

[0039] After the ultrafiltration membrane inside the ultrafiltration membrane assembly 14 has been cleaned of impurities, the employee cooperates with the employee to step on the pedal rod a6 downwards, and the two ends of the contraction rod a4 are respectively arranged on the surfaces of the limit rod a5 and the downward pressure baffle a3, so that when the contraction rod a4 is pressed downward with the limit rod a5 as the center point, the contraction rod a4 will contract, and the contracted contraction rod a4 will drive the downward pressure baffle a3 to move downward on the inner wall surface of the limit strip a1. At this time, the surface of the downward pressure baffle a3 will be peeled off from the surface of the ultrafiltration membrane assembly 14. When one side surface of the ultrafiltration membrane assembly 14 is no longer limited, after the ultrafiltration membrane assembly 14 inside the clamping groove 116 is replaced, after the pedal rod a6 is released, the downward pressure baffle a3 will be moved back to the entrance edge position of the clamping groove 116 under the push of the elastic wire a2, and it will be closed, thereby redefining the position of the ultrafiltration membrane assembly 14.

[0040] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A self-cleaning device for an ultrafiltration membrane assembly, comprising a clamping flushing platform (11) and a sewage return trough (12) detachably fixedly mounted on the outer bottom edge of the clamping flushing platform (11), a flushing arm (13) movably adjusted on both side surfaces of the clamping flushing platform (11), and an ultrafiltration membrane assembly (14) movably sleeved on the inner side wall of the clamping flushing platform (11), characterized in that: A swing arm (131) is swingably connected to the top surface of the flushing arm (13), a motor 2 (132) is fixedly mounted on the other end of the swing arm (131), a rotating cylinder (133) movably sleeved on the outer surface of the ultrafiltration membrane assembly (14) is fixedly connected to the output end of the motor 2 (132), an impact soft block (135) is provided on the outer surface of the rotating cylinder (133), a supporting roller (136) is fixedly mounted on one end of the rotating cylinder (133), and a scraping and cleaning soft strip (137) movably overlapped on the outer surface of the ultrafiltration membrane assembly (14) is fixedly connected to the outer surface of the supporting roller (136).

2. The ultrafiltration membrane assembly self-cleaning device according to claim 1, characterized in that: A clamping groove (116) movably sleeved on the outer surface of the ultrafiltration membrane assembly (14) is provided on the inner wall surfaces of the upper and lower sides of the clamping flushing platform (11) and located in the middle position, and a diversion water groove (115) is provided on the inner wall surface of the bottom of the clamping flushing platform (11) and located at the edge positions of both sides of the clamping groove (116).

3. The ultrafiltration membrane assembly self-cleaning device according to claim 2, characterized in that: The two side surfaces of the clamping flushing platform (11) are provided with a plurality of groups of clamping grooves (111); a motor 1 (112) is fixedly mounted on the top surface of the clamping flushing platform (11) and at the top edge of the clamping grooves (111); an output end of the motor 1 (112) passes through the clamping flushing platform (11) and extends to the inner wall surface of a group of clamping grooves (111).

4. The ultrafiltration membrane assembly self-cleaning device according to claim 3, characterized in that: A threaded rod (113) is fixedly mounted on the output end of the motor 1 (112) and is movably sleeved on the inner wall surface of the clamping groove (111); a limiting rod 2 (114) is fixedly connected to the inner wall surface of another group of the clamping grooves (111); and the outer surfaces of the threaded rod (113) and the limiting rod 2 (114) are movably sleeved on the outer surface of the flushing arm (13).

5. The ultrafiltration membrane assembly self-cleaning device according to claim 1, characterized in that: A limiting strip (a1) is fixedly connected to a side surface of the clamping flushing station (11) and at an edge position at the entrance of the clamping groove (116); an elastic wire (a2) is fixedly connected to the inner wall surface of the bottom of the limiting strip (a1); and a downward pressure baffle (a3) ​​fixedly connected to the top of the elastic wire (a2) is movably sleeved on the inner wall surface of the limiting strip (a1).

6. The ultrafiltration membrane assembly self-cleaning device according to claim 5, characterized in that: A retractable rod (a4) is movably sleeved on the bottom surface of the downward pressure baffle (a3), a limiting rod (a5) is fixedly connected to a side surface of the clamping washing table (11), the other end of the retractable rod (a4) is movably sleeved on the outer surface of the limiting rod (a5), and a pedal rod (a6) is fixedly connected to the outer surface of the retractable rod (a4).

7. The ultrafiltration membrane assembly self-cleaning device according to claim 1, characterized in that: A diversion chute (121) is provided on the inner wall surface of the sewage return groove (12), a sewage filter circulator (122) is fixedly installed on one side surface of the sewage return groove (12), and a return pipe (123) provided on the top surface of the flushing arm (13) is fixedly connected to the output end of the sewage filter circulator (122).

8. The ultrafiltration membrane assembly self-cleaning device according to claim 1, characterized in that: An elastic strip (134) is fixedly connected to the outer surface of the rotating cylinder (133), and the other end of the elastic strip (134) is fixedly connected to the outer surface of the impact soft block (135).

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