A membrane filtration device and system for wastewater in the production process of chloroprene rubber

Abstract

The invention relates to the technical field of water treatment membrane filtration, and in particular to a membrane filtration device and system for sewage in a chloroprene rubber production process; the device and system comprise a filter pool and an MBR membrane filtration unit arranged inside the filter pool, and also comprise a soaking and flushing unit arranged across the outside of the filter pool; the MBR membrane filtration unit comprises a supporting base and an MBR membrane filtration assembly arranged on the supporting base; the edge of the supporting base is a stepped structure; a monomer separation mechanism is arranged on the side of the filter pool; the invention solves the technical problem of how to realize independent cleaning of an MBR membrane filtration device without stopping the machine.

Description

Technical Field

[0001] The invention relates to the technical field of water treatment membrane filtration, and in particular to a membrane filtration device and system for sewage in a chloroprene rubber production process. Background Art

[0002] Sewage is generated during the production process of chloroprene rubber. Direct discharge of sewage without treatment will cause serious water pollution. The various pollutants contained in it will not only change the original material composition of the water, but also because the pollutants are also involved in the transformation and circulation of energy and matter, the original normal and fixed ecological chain will change to varying degrees, destroying the original ecosystem, thereby causing harm to the environment, people, industrial and agricultural production and even the natural environment.

[0003] Sewage treatment first removes suspended solids through filtration or sedimentation, generally using MBR membrane filtration equipment. For example, Chinese patent with authorization announcement number CN221319582U discloses MBR membrane filtration equipment with pretreatment function; MBR membrane filtration equipment can effectively remove suspended solids, suspended particles, biological sludge and organic matter in wastewater to produce high-quality effluent.

[0004] When the MBR membrane filtration equipment has been running continuously for about two months, it needs to be cleaned and maintained. The cleaning method of the MBR membrane filtration equipment is to dismantle, lift and remove the MBR membrane components, then soak them in chemical solution, and finally flush and clean them with a high-pressure water gun. To dismantle and clean the MBR membrane filtration equipment, the entire filtration equipment needs to be shut down.

[0005] Therefore, the problem existing in the prior art is: how to clean the MBR membrane filtration equipment separately without stopping the machine. Summary of the invention

[0006] The invention provides a membrane filtration device and system for sewage in a chloroprene rubber production process, aiming to solve the problem of how to achieve independent cleaning of MBR membrane filtration equipment without stopping the machine.

[0007] The technical solution used in the present invention is as follows:

[0008] In the first aspect of the present application, a membrane filtration device for wastewater in the production process of chloroprene rubber is proposed, comprising a filter tank and an MBR membrane filtration unit arranged inside the filter tank, and also comprising an immersion and flushing unit arranged across the outside of the filter tank; the MBR membrane filtration unit comprises a supporting base and an MBR membrane filtration assembly arranged on the supporting base; the edge of the supporting base is a stepped structure; a monomer separation mechanism is provided on the side of the filter tank; the monomer separation mechanism comprises a separation cylinder arranged on the side of the filter tank, a pusher head of the separation cylinder extends to the inside of the filter tank and is fixed to the monomer docking pressure plate, a docking head is provided on the outside of the docking pressure plate, and the docking head is used to contact and dock with the filter main pipe of the MBR membrane filtration unit; a drainage single tube is provided on the side of the filter tank; the vertical section of the drainage single tube is connected to the docking head through a drainage hose; the horizontal section of the drainage single tube extends to the outside of the filter tank and is connected to the branch pipe of the shunt pipe; a liquid pump is provided on the main pipe of the shunt pipe; a single-tube switch valve is provided on the horizontal section of the drainage single tube.

[0009] Furthermore, the soaking and flushing unit includes a two-axis moving mechanism relatively arranged on both sides of the filter tank and an soaking cover fixed to the execution end of the two-axis moving mechanism; the two-axis moving mechanism includes a transverse base fixed on the ground and a transverse frame arranged on the transverse base, and a transverse sliding shaft is fixed on the transverse frame through an axle seat; a transverse sliding sleeve is slidably matched on the transverse sliding shaft, and the transverse sliding plate is fixed on the transverse sliding sleeve; motor mounting plates are respectively provided on both sides of the transverse frame, and the transverse driving motor is installed on the lower side of the motor mounting plate, and the motor shaft of the transverse driving motor passes through the motor mounting plate and the transverse frame upward. The two horizontal driving gears are connected by a chain transmission; the lower side of the horizontal slide is fixed to the chain by a fixed block; a vertical frame is provided on the upper side of the horizontal slide, a mounting cross plate is horizontally provided on the lower side of the vertical frame, a vertical driving motor is provided on the lower side of the mounting cross plate, a motor shaft of the vertical driving motor passes through the mounting cross plate upward and is fixed to one end of the vertical lead screw by a coupling, the other end of the vertical lead screw is rotatably matched with the vertical frame through a bearing, and the vertical slide is threadedly matched with the vertical lead screw; both sides of the immersion hood are fixed to the vertical slide via immersion connecting plates.

[0010] Furthermore, a cleaning liquid delivery unit is provided on the transverse slide, and the cleaning liquid delivery unit is used to pump the soaking agent for cleaning the MBR membrane filter assembly into the soaking cover; a flushing unit is provided on the transverse slide on the opposite side of the cleaning liquid delivery unit, and the flushing unit is used to flush the MBR membrane filter assembly after soaking.

[0011] Furthermore, the cleaning liquid delivery unit includes a cleaning liquid tank; the bottom of the cleaning liquid tank is connected to one end of a cleaning liquid hose, and the other end of the cleaning liquid hose crosses the vertical slide and is fixed to the upper side of the immersion cover, and is connected to the interior of the immersion cover; the cleaning liquid hose is equipped with a cleaning liquid pump, and after the cleaning liquid pump is turned on, the cleaning liquid agent in the cleaning liquid tank is pumped into the interior of the immersion cover; under the cover setting of the immersion cover, the cleaning liquid gathers inside the immersion cover.

[0012] Furthermore, the flushing unit includes a water storage tank; the bottom of the water storage tank is connected to one end of the flushing hose, the other end of the flushing hose crosses the vertical slide and is connected to one end of the three-way pipe, the three-way pipe is fixed to the upper end of the immersion cover, and a flushing pump is provided on the flushing hose; the other two ends of the three-way pipe extend to the inner cavity of the immersion cover and are connected to the bellows flange; the upper end of the immersion cover is provided with a downward cylinder, and the push head of the downward cylinder extends downward to the inner side of the immersion cover and is connected to the flushing mechanism; the flushing mechanism includes a flushing base The flushing plate and the flushing diverter pipe are provided, and the push head of the downward cylinder is fixed to the side wall of the flushing base plate; a plurality of flushing ear plates are vertically arranged on the flushing base plate, and the flushing diverter pipe is fixed on the flushing ear plate. The flushing diverter pipe has a main pipeline and a plurality of branch pipelines, and the main pipeline is connected to the lower end flange of the corrugated pipe; mounting ears are arranged on the side of the dry flushing ear plate, and the swing plate is matched between the two mounting ears; a flushing nozzle is fixed on the swinging plate, and the flushing nozzle and the branch pipeline of the flushing diverter pipe are connected through a nozzle hose.

[0013] Furthermore, the swing plate is rotatably engaged between the two mounting ears through a rotating shaft; the upper side key of the rotating shaft is connected to a swing gear; swing bases are arranged opposite to each other on both sides of the inner cavity of the immersion hood, and the swing base is provided with a swing slideway, and a swing slide shaft is vertically arranged on the swing base, and a swing slide shaft is slidably engaged with a swing sleeve; a rack slide card is provided on the flushing ear plate, and a swing rack is slidably engaged with the rack slide card, and the swing rack is respectively engaged with the swing gear; a floating buffer mechanism is provided on one side of the swing rack, and a floating drive mechanism is provided on the other side of the swing rack; the floating buffer mechanism and the floating drive mechanism are fixed to the swing slideway and the swing sleeve.

[0014] Furthermore, the floating drive mechanism includes a driving push sleeve and a driving push column. One side of the driving push sleeve is fixed to the swing rack, and the other side of the driving push sleeve is provided with a push sleeve slide groove. One end of the driving push column passes through the swing slide and is fixed to the swing slide sleeve, and the other end of the driving push column is slidably matched in the push sleeve slide groove; a push sleeve spring is passed through the driving push column, and the push sleeve spring is clamped between the push sleeve slide groove and the end of the driving push column; two floating push plates are oppositely provided on the side of the swing base, the floating push plates are perpendicular to the side of the swing base, and the outer side of the floating push plates is wavy Structure; a floating push ring is provided on the outer edge of the end of the driving push sleeve; under the action of the push sleeve spring, the floating push ring is always in contact with the outer side of the floating push plate; the floating buffer mechanism includes a buffer sleeve and a buffer column, one end of the buffer sleeve passes through the swing slide and is fixed to the swing slide sleeve, and the other end of the buffer sleeve is provided with a shrink-shaped buffer groove; one side of the buffer column is fixed to the swing rack, and the other side of the buffer column is slidably matched with the buffer groove; a buffer push ring is provided on the outer edge of the buffer column, and a buffer spring is sleeved on the buffer column, and the buffer spring is clamped between the buffer push ring and the end of the buffer sleeve.

[0015] The second aspect of the present application proposes a filtration system for chloroprene rubber, comprising the membrane filtration device for chloroprene rubber of the above-mentioned embodiment, and also comprising an inlet pipe and a discharge pipe, wherein the inlet pipe and the discharge pipe are connected through a primary filtration unit, and the outflow side of the discharge pipe is connected to the filtration tank; a conduction switch valve is respectively provided on the inlet pipe and the discharge pipe.

[0016] Furthermore, the ends of the liquid inlet pipe and the liquid discharge pipe are respectively provided with a liquid inlet sleeve and a liquid discharge sleeve, and the liquid inlet sleeve is slidably fitted in the interior of the liquid inlet pipe; the liquid discharge sleeve is slidably fitted in the interior of the liquid discharge pipe; the ends of the liquid inlet sleeve and the liquid discharge sleeve are connected with the sealing head; the outer sides of the liquid inlet pipe and the liquid discharge pipe are respectively provided with mounting push rods, and the push heads of the mounting push rods are connected with the sealing head; a sealing ring convex is formed on the side of the sealing head, and the primary filter unit is located between the two sealing heads; the primary filter unit includes a primary filter bracket with an n-shaped cross-section, a filter plate cylinder is provided on the upper side of the filter bracket, and the push head of the filter plate cylinder extends downward to the inner side of the filter bracket and is connected to the fixed filter plate; a first filter is provided in the middle of the fixed filter plate A filter channel; the four corners of the fixed filter plate are respectively provided with filter plate matching grooves with a constricted mouth, and a movable filter plate is provided on the side of the fixed filter plate; a circular second filter channel is provided in the middle of the movable filter plate, and the four corners of the fixed filter plate are respectively provided with filter plate matching columns, and the filter plate matching columns are slidably matched in the filter plate matching grooves; an oscillation return spring is passed through the filter plate matching columns; a filter net is provided at the outer edge of the second filter channel; filter plate racks are oppositely provided on both sides of the movable filter plate; sealing recesses are respectively provided on the outer sides of the movable filter plate and the fixed filter plate, transverse sliding grooves are provided on both sides of the filter bracket, and a transverse push rod is provided on the side end of the filter bracket, and the push head of the transverse push rod extends into the transverse sliding groove and is connected with the scraper assembly.

[0017] Furthermore, the scraping assembly includes transverse sliding blocks relatively arranged on two sides, the transverse sliding blocks are respectively slidably engaged in the transverse sliding grooves on both sides, the push head of the transverse pushing rod is connected to the side of the transverse sliding block, the scraper pressure shaft is rotatably engaged with the transverse sliding blocks on both sides through bearings, the two sides of the scraper pressure shaft are respectively keyed with filter plate gears, and the filter plate gears are used to contact and engage with the filter plate rack; two ratchet gears are keyed on the scraper pressure shaft, and the ratchet gear is located between the two filter plate gears; a pressure sleeve is rotatably engaged on the scraper pressure shaft, and a scraping plate is provided on the lower side of the two pressure sleeves; a ratchet shaft is provided on the side of the pressure sleeve, and a ratchet card is rotatably engaged on the ratchet shaft through a torsion spring; the ratchet card is pressed onto the ratchet gear through the torsion spring; a magnet bracket is fixed between the two transverse sliding blocks, and two mounting frames are provided on the upper side of the magnet bracket, and the electromagnet is fixed on the mounting frame.

[0018] The beneficial effects achieved by the present invention are as follows: a cleaning liquid delivery unit is provided on the transverse slide plate on one side, and the cleaning liquid delivery unit is used to pump a soaking agent for cleaning the MBR membrane filter assembly into the soaking cover; when the transverse slide plate drives the soaking cover to align with the MBR membrane filter unit to be cleaned in the left-right direction, the vertical drive motor is turned on, so that the vertical slide plate moves downward along the slide groove, thereby driving the soaking cover to move downward and contact with the supporting base of the MBR membrane filter unit, so that the MBR membrane filter assembly is covered inside the soaking cover; the cleaning liquid delivery unit is turned on to pump the cleaning liquid into the soaking cover, and under the covering of the soaking cover, the cleaning liquid gathers inside the soaking cover and will not overflow to reduce the concentration of the agent. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of a chloroprene rubber membrane filtration device of the present invention.

[0020] Figure 2 The monomer separation mechanism of the present invention is schematically shown in FIG. Figure 1 .

[0021] Figure 3 The monomer separation mechanism of the present invention is schematically shown in FIG. Figure 2 .

[0022] Figure 4 It is a schematic diagram of the structure of the immersion and flushing unit of the present invention.

[0023] Figure 5 It is a schematic diagram of the structure of the two-axis moving mechanism of the present invention.

[0024] Figure 6 It is a schematic diagram of the structure of the flushing unit of the present invention.

[0025] Figure 7 It is a schematic diagram of the connection between the downward moving cylinder and the flushing mechanism of the present invention.

[0026] Figure 8 It is a schematic diagram of the connection between the bellows and the flushing diverter pipe of the present invention.

[0027] Fig. 9 It is a schematic diagram of the structure of the flushing mechanism of the present invention.

[0028] Fig.10 It is a structural schematic diagram of the floating drive mechanism of the present invention.

[0029] Fig.11 It is a structural schematic diagram of the floating buffer mechanism of the present invention.

[0030] Fig.12 It is a cross-sectional schematic diagram of the floating buffer mechanism of the present invention.

[0031] Fig.13The present invention is a schematic diagram of the structure of a filtration system for chloroprene rubber.

[0032] Fig.14 It is a schematic diagram of the end structure of the liquid inlet pipe and the liquid discharge pipe of the present invention.

[0033] Fig.15 It is a schematic diagram of the structure of the primary filtration unit of the present invention.

[0034] Fig.16 It is a schematic diagram of the structure of the scraping component of the present invention.

[0035] Fig.17 It is a schematic diagram of the scraper structure of the present invention.

[0036] Fig.18 It is a structural schematic diagram of a fixed filter plate and a movable filter plate of the present invention.

[0037] Fig.19 It is a schematic diagram of the action of the scraping component of the present invention.

[0038] In the figure, 1, filter tank; 2, support base; 3, MBR membrane filter assembly; 4, separation cylinder; 5, single docking pressure plate; 6, docking joint; 7, drainage single tube; 8, drainage hose; 9, filter diversion pipe; 10, liquid pump; 11, single tube switch valve; 12, immersion cover; 13, horizontal base; 14, horizontal frame; 15, horizontal sliding shaft; 16, horizontal sliding sleeve; 17, horizontal slide plate; 18, motor mounting plate; 19, horizontal drive motor; 20, horizontal drive gear; 21, chain; 22, vertical frame; 23, installation horizontal plate; 24, vertical drive motor; 25, vertical lead screw; 26, vertical slide plate; 27, immersion connecting plate; 28, cleaning liquid tank; 29, cleaning liquid hose; 30, cleaning liquid pump; 31, water storage tank; 32, flushing hose; 33, flushing pump; 34, three-way pipe; 35, bellows; 36, downward cylinder; 37, flushing base plate; 38, flushing shunt pipe; 39, flushing ear plate; 40, mounting ear; 41, swing plate; 42, flushing nozzle; 43, nozzle hose; 44, swing gear; 45, swing base; 46, swing slide ;47, swing slide shaft;48, swing slide sleeve;49, rack slide card;50, swing rack;51, drive push sleeve;52, drive push column;53, push sleeve slide groove;54, push sleeve spring;55, floating push plate;56, floating push ring;57, buffer sleeve;58, buffer column;59, buffer groove;60, buffer push ring;61, buffer spring;62, liquid inlet pipe;63, liquid discharge pipe;64, conduction switch valve;65, liquid inlet sleeve;66, liquid discharge sleeve;67, sealing head;68, sealing ring convex;69, installation push rod;70, Initial filter bracket; 71, filter plate cylinder; 72, fixed filter plate; 73, first filter channel; 74, filter plate matching groove; 75, movable filter plate; 76, filter plate matching column; 77, second filter channel; 78, oscillation return spring; 79, filter screen; 80, filter plate rack; 81, transverse slide groove; 82, transverse push rod; 83, transverse slide block; 84, scraper pressure shaft; 85, filter plate gear; 86, ratchet gear; 87, pressing sleeve; 88, ratchet card; 89, magnet bracket; 90, mounting bracket; 91, electromagnet; 92, scraper plate. DETAILED DESCRIPTION

[0039] To facilitate those skilled in the art to understand the present invention, specific implementations of the present invention are described below with reference to the accompanying drawings.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two elements; for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood through specific circumstances.

[0041] like Figure 1 As shown, the present invention provides a membrane filtration device for wastewater in the production process of chloroprene rubber, comprising a filtration pool 1 and an MBR membrane filtration unit arranged inside the filtration pool 1, and also comprising an immersion and flushing unit arranged across the outside of the filtration pool 1; a plurality of MBR membrane filtration units can be provided (three are taken as an example in this application); the MBR membrane filtration unit comprises a support base 2 and an MBR membrane filtration assembly 3 arranged on the support base 2, the MBR membrane filtration assembly 3 is an existing curtain structure, having a plurality of groups of membranes, and filtering water through hollow fiber filaments on the membranes; the water filtered by each membrane is collected into a filtration main pipe for discharge; the edge of the support base 2 is a stepped structure; as shown Figure 2-3 As shown, a monomer separation mechanism is provided on the side of the filter tank 1, and the monomer separation mechanism is used to be detachably connected with the MBR membrane filtration unit; the monomer separation mechanism includes a separation cylinder 4 provided on the side of the filter tank 1, and the push head of the separation cylinder 4 extends inside the filter tank 1 and is fixed to the monomer docking pressure plate 5, and a docking joint 6 is provided on the outside of the docking pressure plate, and the docking joint 6 is used to contact and dock with the filtration main pipe of the MBR membrane filtration unit; a drainage single tube 7 of an L-shaped structure is provided on the side of the filter tank 1; the vertical section of the drainage single tube 7 is located inside the filter tank 1, and is connected to the docking joint 6 through a drainage hose 8; the horizontal section of the drainage single tube 7 extends outside the filter tank 1 and is connected to the branch pipe of the shunt pipe; a liquid pump 10 is provided on the main pipe of the shunt pipe, and the sewage filtered by the MBR membrane filtration unit is merged into the main pipe of the shunt pipe through the drainage hose 8 and the drainage single tube 7, and is transported to the next process for treatment through the main pipe; a single-tube switch valve 11 is provided on the horizontal section of the drainage single tube 7, and the single-tube switch valve 11 is used to control the opening and closing of the drainage single tube 7.

[0042] The soaking and flushing unit is used to soak and flush the membrane on the soaking and flushing unit separately without affecting the normal operation of the other MBR membrane filtration units in the filtration tank 1; Figure 4As shown, the soaking and flushing unit includes a two-axis moving mechanism relatively arranged on both sides of the filter tank 1 and an soaking cover 12 fixed to the execution end of the two-axis moving mechanism; the two-axis moving mechanism includes a transverse base 13 fixed on the ground and a transverse frame 14 arranged on the transverse base 13, and two transverse sliding shafts 15 are fixed on the transverse frame 14 through an axle seat; four transverse sliding sleeves 16 are slidably matched on the transverse sliding shaft 15, and a transverse slide plate 17 is fixed on the transverse sliding sleeve 16, and the transverse slide plate 17 can slide left and right along the transverse sliding shaft 15; two sides of the transverse frame 14 are respectively provided with The motor mounting plate 18, the transverse drive motor 19 is mounted on the lower side of the motor mounting plate 18, the motor shaft of the transverse drive motor 19 passes through the motor mounting plate 18 upward and is key-connected with the transverse drive gear 20, and the two transverse drive gears 20 are connected by a chain 21; the lower side of the transverse slide plate 17 is fixed to the chain 21 by a fixing block; when in use, the transverse drive motor 19 is turned on to drive the chain 21 to drive, so that the transverse slide plate 17 changes position along the transfer slide shaft, so that the immersion cover 12 is aligned with the MBR membrane filtration unit to be cleaned in the left and right directions; Figure 5 As shown, a vertical frame 22 of an n-shaped structure is provided on the upper side of the horizontal slide 17, a mounting horizontal plate 23 is horizontally provided on the lower side of the vertical frame 22, a vertical drive motor 24 is provided on the lower side of the mounting horizontal plate 23, a motor shaft of the vertical drive motor 24 passes through the mounting horizontal plate 23 and is fixed to one end of a vertical lead screw 25 through a coupling, the other end of the vertical lead screw 25 is rotatably matched with the vertical frame 22 through a bearing, a vertical slide 26 is threadedly matched on the vertical lead screw 25, a slide groove is relatively provided on the inner side of the vertical section of the vertical frame 22, and both sides of the vertical slide 26 are slidably matched in the slide groove; both sides of the immersion hood 12 are fixed to the vertical slide 26 through an L-shaped immersion connecting plate 27; a horizontal slide 17 on one side is provided There is a cleaning liquid delivery unit, which is used to pump the soaking agent for cleaning the MBR membrane filter assembly 3 into the soaking hood 12; when the horizontal slide 17 drives the soaking hood 12 to align with the MBR membrane filter unit to be cleaned in the left and right directions, the vertical drive motor 24 is turned on, so that the vertical slide 26 moves downward along the slide groove, thereby driving the soaking hood 12 to move downward and contact with the supporting base 2 of the MBR membrane filter unit, so that the MBR membrane filter assembly 3 is covered inside the soaking hood 12; the cleaning liquid delivery unit is turned on to send the cleaning liquid pump 30 to the inside of the soaking hood 12. Under the covering of the soaking hood 12, the cleaning liquid gathers inside the soaking hood 12 and will not overflow to reduce the concentration of the agent.

[0043] like Figure 5As shown, the cleaning liquid delivery unit includes a cleaning liquid tank 28, the upper side of the cleaning liquid tank 28 is provided with a filling port, and the filling port is threaded with a detachable cover; the bottom of the cleaning liquid tank 28 is connected to one end of a cleaning liquid hose 29, and the other end of the cleaning liquid hose 29 crosses the vertical slide 26 and is fixed to the upper side of the immersion cover 12, and is connected to the interior of the immersion cover 12; the cleaning liquid hose 29 is equipped with a cleaning liquid pump 30, and when the cleaning liquid pump 30 is turned on, the cleaning liquid agent in the cleaning liquid tank 28 is pumped into the interior of the immersion cover 12.

[0044] After the MBR membrane filter assembly 3 is soaked in the cleaning liquid agent inside the soaking hood 12 for two hours, the surface of the MBR membrane filter assembly 3 needs to be manually flushed through a water pipe to flush away the residual impurities on the MBR membrane filter assembly 3; the present application further provides a flushing unit to flush the soaked MBR membrane filter assembly 3; Figure 6 As shown, a flushing unit is provided on the horizontal slide 17 on the side opposite to the cleaning liquid delivery unit, and the flushing unit includes a water storage tank 31, and a water injection port is provided on the upper side of the water storage tank 31, and a detachable cover is threadedly matched on the water injection port; the bottom of the water storage tank 31 is connected to one end of a flushing hose 32, and the other end of the flushing hose 32 crosses the vertical slide 26 and is connected to one end of a three-way pipe 34, and the three-way pipe 34 is fixed to the upper end of the immersion cover 12, and a flushing pump 33 is provided on the flushing hose 32; Figure 7-8 As shown, the other two ends of the three-way pipe 34 extend into the inner cavity of the soaking hood 12 and are connected to the flange of the bellows 35; a downward cylinder 36 is provided at the upper end of the soaking hood 12, and a push head of the downward cylinder 36 extends downward to the inner side of the soaking hood 12 and is connected to the flushing mechanism; the downward cylinder 36 can drive the flushing mechanism to move in the vertical direction; Figure 8-9 As shown, the flushing mechanism includes a flushing base plate 37 and a flushing shunt pipe 38. The push head of the downward cylinder 36 is fixed to the side wall of the flushing base plate 37. A plurality of flushing ear plates 39 are vertically arranged on the flushing base plate 37. The flushing shunt pipe 38 is fixed on the flushing ear plate 39. The flushing shunt pipe 38 has a main pipe and a plurality of branch pipes. The main pipe is connected to the lower end flange of the bellows 35. The side of the dry flushing ear plate 39 is relatively provided with a mounting ear 40, and the swing plate 41 cooperates with between the two mounting ears 40; a flushing nozzle 42 is fixed on the swing plate 41, and the flushing nozzle 42 is connected to the branch pipe of the flushing diversion pipe 38 through a nozzle hose 43; after the flushing pump 33 is turned on, the water inside the water storage tank 31 is pumped to the flushing diversion pipe 38 through the flushing hose 32, the three-way pipe 34, and the bellows 35, and is discharged from the flushing nozzle 42; the downward cylinder 36 is extended and shortened to realize the flushing and cleaning of the MBR membrane filtration component 3.

[0045] The flushing area of ​​a single flushing nozzle 42 is limited, and it is impossible to achieve comprehensive flushing of the MBR membrane filtration group alone. In order to solve this problem; Fig. 9As shown, the swing plate 41 is rotated and matched between the two mounting ears 40 through a rotating shaft; the upper side key of the rotating shaft is connected to a swing gear 44; a swing base 45 with an n-shaped cross-section is arranged on both sides of the inner cavity of the soaking hood 12, and a swing slide 46 is arranged on the swing base 45, and a swing slide shaft 47 is vertically arranged on the swing base 45, and a swing slide sleeve 48 is slidably matched on the swing slide shaft 47; a rack slide card 49 with an n-shaped cross-section is arranged on the flushing ear plate 39, and a swing rack 50 is slidably matched in the rack slide card 49, and the swing rack 50 is respectively meshed with the swing gear 44; a floating buffer mechanism is arranged on one side of the swing rack 50, and the swing rack 50 is meshed with the swing gear 44. 0 is provided with a floating drive mechanism on the other side; the floating buffer mechanism and the floating drive mechanism are fixed through the swing slide 46 and the swing sleeve 48; when in use, the downward cylinder 36 is extended to drive the flushing base plate 37 to move downward, and the swing sleeve 48 slides downward along the swing slide shaft 47, and under the action of the floating buffer mechanism and the floating drive mechanism, the swing rack 50 slides back and forth; because the swing rack 50 is meshed with the swing gear 44, the swing gear 44 will drive the swing plate 41 to reciprocate along the mounting ear 40, so that the flushing nozzle 42 swings left and right during the downward movement, thereby realizing comprehensive flushing of the MBR membrane filtration group.

[0046] like Fig.10 As shown, the floating drive mechanism includes a driving push sleeve 51 and a driving push column 52. One side of the driving push sleeve 51 is fixed to the swing rack 50, and the other side of the driving push sleeve 51 is provided with a shrink-shaped push sleeve slot 53. One end of the driving push column 52 passes through the swing slide 46 and is fixed to the swing slide sleeve 48, and the other end of the driving push column 52 is slidably matched in the push sleeve slot 53; the end of the driving push column 52 has an anti-slip structure to prevent the driving push column 52 from slipping out of the push sleeve slot 53, and the driving push column 52 is penetrated by a push sleeve spring 54, and the push sleeve spring 54 is stuck between the push sleeve slot 53 and the end of the driving push column 52; Two floating push plates 55 are arranged opposite to each other on the side of the swing base 45. The floating push plates 55 are perpendicular to the side of the swing base 45, and the outer side of the floating push plates 55 is a wave-shaped structure. A floating push ring 56 is arranged on the outer edge of the end of the driving push sleeve 51. Under the action of the push sleeve spring 54, the floating push ring 56 is always in contact with the outer side of the floating push plate 55. When the downward cylinder 36 extends and drives the flushing base plate 37 to move downward, the swing sleeve 48 will slide downward along the swing slide shaft 47, and the floating push plate 55 will force the driving push sleeve 51 to swing back and forth, thereby driving the swing rack 50 to swing back and forth. Figure 11-12As shown, the floating buffer mechanism includes a buffer sleeve 57 and a buffer column 58. One end of the buffer sleeve 57 passes through the swing slide 46 and is fixed to the swing slide sleeve 48, and the other end of the buffer sleeve 57 is provided with a shrink-shaped buffer groove 59; one side of the buffer column 58 is fixed to the swing rack 50, and the other side of the buffer column 58 is slidably matched with the buffer groove 59, and the end of the buffer column 58 has an anti-slip structure to prevent the buffer column 58 from slipping out of the buffer groove 59; a buffer push ring 60 is provided on the outer edge of the buffer column 58, and a buffer spring 61 is sleeved on the buffer column 58, and the buffer spring 61 is stuck between the buffer push ring 60 and the end of the buffer sleeve 57. When the swing rack 50 swings back and forth under the action of the floating drive mechanism, the buffer column 58 slides left and right along the buffer sleeve 57 to perform swing compensation.

[0047] A second aspect of the present invention provides a filtration system for chloroprene rubber, such as Fig.13 As shown, the membrane filtration device for chloroprene rubber includes the above-mentioned embodiment, and also includes an inlet pipe 62 and a discharge pipe 63. The inlet pipe 62 and the discharge pipe 63 are connected through a primary filtration unit, and the outflow side of the discharge pipe 63 is connected to the filter tank 1; the inlet pipe 62 and the discharge pipe 63 are respectively provided with a conduction switch valve 64, which can be any one of a manual valve and an electric valve, for controlling the opening and closing of the inlet pipe 62 and the discharge pipe 63 respectively; the primary filtration unit is used to filter out large particles of impurities in sewage.

[0048] like Fig.14 As shown, the ends of the liquid inlet pipe 62 and the liquid discharge pipe 63 are respectively provided with a liquid inlet sleeve 65 and a liquid discharge sleeve 66, the liquid inlet sleeve 65 is slidably matched with the inside of the liquid inlet pipe 62 (sealed sleeve structure, slidably matched inner sleeve and outer sleeve structure, sealed by a rubber ring), and the liquid discharge sleeve 66 is slidably matched with the inside of the liquid discharge pipe 63; the ends of the liquid inlet sleeve 65 and the liquid discharge sleeve 66 are connected with a sealing head 67; the outer sides of the liquid inlet pipe 62 and the liquid discharge pipe 63 are respectively provided with a mounting push rod 69, and the push head of the mounting push rod 69 is connected with the sealing head 67; the side of the sealing head 67 is formed with a sealing ring protrusion 68, and the primary filter unit is located between the two sealing heads 67; as shown Fig.15 As shown, the primary filter unit includes a primary filter support 70 with an n-shaped cross section, a filter plate cylinder 71 is provided on the upper side of the filter support, and a push head of the filter plate cylinder 71 extends downward to the inner side of the filter support and is connected to a fixed filter plate 72; Fig.18As shown, the fixed filter plate 72 has a square cross section, and a circular first filter channel 73 is provided in the middle of the fixed filter plate 72; the four corners of the fixed filter plate 72 are respectively provided with filter plate matching grooves 74 with a constricted mouth, and the side of the fixed filter plate 72 is provided with a movable filter plate 75, and the movable filter plate 75 is a square cross section corresponding to the fixed filter plate 72; a circular second filter channel 77 is provided in the middle of the movable filter plate 75, and the four corners of the fixed filter plate 72 are respectively provided with filter plate matching columns 76, and the filter plate matching columns 76 are slidably matched in the filter plate matching grooves 74, and the sliding ends of the filter plate matching columns 76 have an anti-slip structure; the filter plate An oscillation return spring 78 is passed through the matching column 76, and the oscillation return spring 78 is clamped between the end of the filter plate matching column 76 and the end of the filter plate matching groove 74, so that the movable filter plate 75 is in contact with the fixed filter plate 72, and the first filter channel 73 and the second filter channel 77 form a whole; the outer edge of the second filter channel 77 is provided with a filter screen 79; filter plate racks 80 are provided on both sides of the movable filter plate 75; the outer sides of the movable filter plate 75 and the fixed filter plate 72 are respectively provided with sealing recesses. When installing, the sealing ring protrusion 68 of the sealing head 67 is clamped in the sealing recess for clamping and sealing; Fig.15 As shown, transverse sliding grooves 81 are provided on both sides of the filter bracket, and a transverse pushing rod 82 is provided at the side end of the filter bracket. The push head of the transverse pushing rod 82 extends into the transverse sliding groove 81 and is connected to the scraping component.

[0049] like Fig.16 As shown, the scraping assembly includes transverse sliding blocks 83 arranged on both sides relatively, and the transverse sliding blocks 83 are respectively slidably matched in the transverse sliding grooves 81 on both sides, and the push head of the transverse push rod 82 is connected to the side of the transverse sliding block 83, and the scraper pressure shaft 84 is rotationally matched with the transverse sliding blocks 83 on both sides through bearings. The two sides of the scraper pressure shaft 84 are respectively keyed with filter plate gears 85, and the filter plate gears 85 are used to contact and match with the filter plate rack 80; the scraper pressure shaft 84 is keyed with two ratchet gears 86 (that is, when the scraper pressure shaft 84 rotates, the ratchet gear 86 will rotate synchronously), and the ratchet gear 86 is located between the two filter plate gears 85; as shown in FIG. Fig.17 As shown, a pressing sleeve 87 is rotatably engaged on the scraper pressure shaft 84, and a scraping plate 92 is provided on the lower side of the two pressing sleeves 87; a ratchet shaft is provided on the side of the pressing sleeve 87, and a ratchet card 88 is rotatably engaged on the ratchet shaft through a torsion spring (the torsion spring is not shown in the figure); the ratchet card 88 is pressed onto the ratchet gear 86 through the torsion spring, so that when the scraper pressure shaft 84 rotates, the pressing sleeve 87 can be forced to produce a reverse trend, so that the scraping plate 92 is pressed and contacted with the movable filter plate 75; a magnet bracket 89 is fixed between the two transverse sliding blocks 83, and two mounting frames 90 are provided on the upper side of the magnet bracket 89, and the electromagnet 91 is fixed on the mounting frame 90.

[0050] like Fig.16 , 19As shown, when in use, the filter screen 79 on the movable filter plate 75 blocks and filters large particles of impurities. When the filter screen 79 needs to be cleaned, the installation push rod 69 is retracted, so that the two sealing heads 67 move to both sides respectively; the filter plate cylinder 71 is retracted so that the fixed filter plate 72 and the movable filter plate 75 move upward as a whole, and the filter plate rack 80 contacts and cooperates with the filter plate gear 85; during the upward movement of the filter plate rack 80, the filter plate gear 85 rotates in the direction a1, and the ratchet gear 86 rotates relative to the pressing sleeve 87, forcing the pressing sleeve 87 to have a tendency to rotate in the direction a2, so that the scraper plate 92 is pressed and contacted with the movable filter plate 75, and the impurities on the filter screen 79 are removed by the scraper plate 92. The impurities on the filter screen 79 are initially scraped off; when the fixed filter plate 72 and the movable filter plate 75 move to the upper side of the scraping plate 92, the transverse push rod 82 extends, causing the transverse slide block 83 to slide laterally along the transverse slide groove 81, and the electromagnet 91 contacts the lower side of the movable filter plate 75; the electromagnet 91 is turned on, the transverse push rod 82 is retracted, and the transverse slide block 83 moves to the end of the transverse slide groove 81 to separate the movable filter plate 75 from the fixed filter plate 72; the filter plate matching column 76 slides along the filter plate matching groove 74, and the oscillation return spring 78 is squeezed; the electromagnet 91 is turned off, the movable filter plate 75 is instantly released, and the movable filter plate 75 generates an oscillation impact after contacting the fixed filter plate 72, and the impurities remaining on the filter screen 79 are removed by oscillation.

[0051] If the fixing method is not separately introduced above, the general technical means used by technicians in the industry are used, such as welding, nesting, or threaded fixing.

[0052] The following points need to be explained:

[0053] (1) The drawings of the embodiments of the present invention only relate to the structures related to the embodiments of the present invention, and other structures may refer to the general design.

[0054] (2) For the sake of clarity, in the drawings used to describe the embodiments of the present invention, the thickness of the layers or regions is exaggerated or reduced, that is, these drawings are not drawn according to the actual scale. It is understood that when an element such as a layer, film, region or substrate is referred to as being "on" or "under" another element, the element may be "directly" "on" or "under" the other element or there may be intermediate elements.

[0055] (3) In the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to obtain new embodiments.

[0056] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. The protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A membrane filtration device for wastewater in the production process of chloroprene rubber, characterized in that: The invention comprises a filter tank (1) and an MBR membrane filtration unit arranged inside the filter tank (1), and also comprises a soaking and flushing unit arranged across the outside of the filter tank (1); the MBR membrane filtration unit comprises a support base (2) and an MBR membrane filtration assembly (3) arranged on the support base (2); the edge of the support base (2) is a stepped structure; a monomer separation mechanism is arranged on the side of the filter tank (1); the monomer separation mechanism comprises a separation cylinder (4) arranged on the side of the filter tank (1), and a pusher head of the separation cylinder (4) extends inside the filter tank (1). The single drainage pipe (7) is fixed to the single-body docking plate (5), and a docking joint (6) is provided on the outer side of the docking plate. The docking joint (6) is used to contact and dock with the filtration main pipe of the MBR membrane filtration unit; a drainage single pipe (7) is provided on the side of the filtration tank (1); the vertical section of the drainage single pipe (7) is connected to the docking joint (6) through a drainage hose (8); the horizontal section of the drainage single pipe (7) extends outside the filtration tank (1) and is connected to the branch pipe of the diversion pipe; a liquid pump (10) is provided on the main pipe of the diversion pipe; and a single-pipe switch valve (11) is provided on the horizontal section of the drainage single pipe (7); The soaking and flushing unit comprises a two-axis moving mechanism arranged on both sides of the filter tank (1) and a soaking cover (12) fixed to the execution end of the two-axis moving mechanism; A downward moving cylinder (36) is provided at the upper end of the soaking hood (12), and a pusher head of the downward moving cylinder (36) extends downward from the inner side of the soaking hood (12) and is connected to a flushing mechanism; the flushing mechanism comprises a flushing base plate (37) and a flushing shunt pipe (38), and the pusher head of the downward moving cylinder (36) is fixed to the side wall of the flushing base plate (37); a plurality of flushing ear plates (39) are vertically provided on the flushing base plate (37), and the flushing shunt pipe (38) is fixed to the flushing ear plates (39), the flushing diversion pipe (38) has a main pipeline and a plurality of branch pipelines, and the main pipeline is connected to the lower end flange of the bellows (35); the side of the flushing ear plate (39) is oppositely provided with mounting ears (40), and the swing plate (41) is matched between the two mounting ears (40); a flushing nozzle (42) is fixed on the swing plate (41), and the flushing nozzle (42) and the branch pipeline of the flushing diversion pipe (38) are connected through a nozzle hose (43).

2. A membrane filtration device for wastewater in the production process of chloroprene rubber according to claim 1, characterized in that: The two-axis moving mechanism comprises a transverse base (13) fixed on the ground and a transverse frame (14) arranged on the transverse base (13); a transverse sliding shaft (15) is fixed on the transverse frame (14) via an axle seat; a transverse sliding sleeve (16) is slidably matched on the transverse sliding shaft (15); a transverse sliding plate (17) is fixed on the transverse sliding sleeve (16); motor mounting plates (18) are respectively provided on both sides of the transverse frame (14); a transverse driving motor (19) is mounted on the lower side of the motor mounting plate (18); a motor shaft of the transverse driving motor (19) passes through the motor mounting plate (18) upwardly and is key-connected to a transverse driving gear (20); a chain (21) is connected between the two transverse driving gears (20). ) transmission connection; the lower side of the horizontal slide plate (17) is fixed to the chain (21) by a fixing block; a vertical frame (22) is provided on the upper side of the horizontal slide plate (17), a mounting cross plate (23) is horizontally provided on the lower side of the vertical frame (22), a vertical drive motor (24) is provided on the lower side of the mounting cross plate (23), a motor shaft of the vertical drive motor (24) passes through the mounting cross plate (23) and is fixed to one end of the vertical lead screw (25) by a coupling, the other end of the vertical lead screw (25) is rotatably matched with the vertical frame (22) by a bearing, and a vertical slide plate (26) is threadedly matched on the vertical lead screw (25); both sides of the immersion hood (12) are fixed to the vertical slide plate (26) by immersion connecting plates (27).

3. A membrane filtration device for wastewater in the production process of chloroprene rubber according to claim 2, characterized in that: The transverse slide plate (17) is provided with a cleaning liquid delivery unit, which is used to pump a soaking agent for cleaning the MBR membrane filter assembly (3) into the soaking cover (12); and the transverse slide plate (17) on the side opposite to the cleaning liquid delivery unit is provided with a flushing unit, which is used to flush the MBR membrane filter assembly (3) after soaking.

4. A membrane filtration device for wastewater in the production process of chloroprene rubber according to claim 3, characterized in that: The cleaning liquid delivery unit comprises a cleaning liquid tank (28); the bottom of the cleaning liquid tank (28) is connected to one end of a cleaning liquid hose (29); the other end of the cleaning liquid hose (29) crosses the vertical slide plate (26) and is fixed to the upper side of the soaking cover (12), and is communicated with the interior of the soaking cover (12); the cleaning liquid hose (29) is equipped with a cleaning liquid pump (30); when the cleaning liquid pump (30) is turned on, the cleaning liquid agent in the cleaning liquid tank (28) is pumped into the interior of the soaking cover (12); under the cover of the soaking cover (12), the cleaning liquid is collected in the interior of the soaking cover (12).

5. A membrane filtration device for wastewater in the production process of chloroprene rubber according to claim 3, characterized in that: The flushing unit comprises a water storage tank (31); the bottom of the water storage tank (31) is connected to one end of a flushing hose (32); the other end of the flushing hose (32) crosses the vertical slide plate (26) and is connected to one end of a three-way pipe (34); the three-way pipe (34) is fixed to the upper end of the soaking hood (12); a flushing pump (33) is provided on the flushing hose (32); the other two ends of the three-way pipe (34) extend into the inner cavity of the soaking hood (12) and are flange-connected to a bellows (35).

6. A membrane filtration device for wastewater in the production process of chloroprene rubber according to claim 5, characterized in that: The swing plate (41) is rotatably engaged between the two mounting ears (40) via a rotating shaft; a swing gear (44) is connected to the upper side key of the rotating shaft; swing bases (45) are arranged opposite to each other on both sides of the inner cavity of the soaking hood (12); a swing slideway (46) is arranged on the swing base (45); a swing slide shaft (47) is vertically arranged on the swing base (45); a swing slide sleeve (48) is slidably engaged with the swing slide shaft (47); a rack slide card (49) is arranged on the flushing ear plate (39); a swing rack (50) is slidably engaged with the rack slide card (49); the swing rack (50) is respectively meshed with the swing gear (44); a floating buffer mechanism is arranged on one side of the swing rack (50); a floating drive mechanism is arranged on the other side of the swing rack (50); the floating buffer mechanism and the floating drive mechanism are fixed to the swing slide sleeve (48) through the swing slideway (46).

7. A membrane filtration device for wastewater in the production process of chloroprene rubber according to claim 6, characterized in that: The floating drive mechanism comprises a driving push sleeve (51) and a driving push column (52), one side of the driving push sleeve (51) is fixed to the swing rack (50), the other side of the driving push sleeve (51) is provided with a push sleeve sliding groove (53) with a constricted opening, one end of the driving push column (52) passes through the swing slideway (46) and is fixed to the swing slide sleeve (48), and the other end of the driving push column (52) is slidably matched in the push sleeve sliding groove (53); a push sleeve spring (54) is passed through the driving push column (52), and the push sleeve spring (54) is stuck between the push sleeve sliding groove (53) and the end of the driving push column (52); two floating push plates (55) are oppositely provided on the side of the swing base (45), the floating push plates (55) are perpendicular to the side of the swing base (45), and the outer side of the floating push plates (55) is a wave-shaped structure; the driving A floating push ring (56) is provided at the outer edge of the end of the push sleeve (51); under the action of the push sleeve spring (54), the floating push ring (56) is always in contact with the outer side of the floating push plate (55); the floating buffer mechanism comprises a buffer sleeve (57) and a buffer column (58); one end of the buffer sleeve (57) passes through the swing slideway (46) and is fixed to the swing slide sleeve (48), and the other end of the buffer sleeve (57) is provided with a shrink-shaped buffer groove (59); one side of the buffer column (58) is fixed to the swing rack (50), and the other side of the buffer column (58) is slidably matched with the buffer groove (59); a buffer push ring (60) is provided at the outer edge of the buffer column (58), and a buffer spring (61) is sleeved on the buffer column (58), and the buffer spring (61) is clamped between the buffer push ring (60) and the end of the buffer sleeve (57).

8. A filtration system for chloroprene rubber, characterized in that: The invention comprises a membrane filtration device for chloroprene rubber as claimed in claim 1, and further comprises a liquid inlet pipe (62) and a liquid discharge pipe (63), wherein the liquid inlet pipe (62) and the liquid discharge pipe (63) are connected via a primary filtration unit, and the outflow side of the liquid discharge pipe (63) is connected to the filtration tank (1); and a conduction switch valve (64) is provided on the liquid inlet pipe (62) and the liquid discharge pipe (63), respectively.

9. A filtration system for chloroprene rubber according to claim 8, characterized in that: The ends of the liquid inlet pipe (62) and the liquid discharge pipe (63) are respectively provided with a liquid inlet sleeve (65) and a liquid discharge sleeve (66); the liquid inlet sleeve (65) is slidably fitted inside the liquid inlet pipe (62); the liquid discharge sleeve (66) is slidably fitted inside the liquid discharge pipe (63); the ends of the liquid inlet sleeve (65) and the liquid discharge sleeve (66) are connected to a sealing head (67); the outer sides of the liquid inlet pipe (62) and the liquid discharge pipe (63) are respectively provided with mounting push rods (69); A push head of a push rod (69) is connected to a sealing head (67); a sealing ring protrusion (68) is formed on the side of the sealing head (67); the primary filter unit is located between the two sealing heads (67); the primary filter unit comprises a primary filter support (70) with an n-shaped cross section, a filter plate cylinder (71) is provided on the upper side of the filter support, and a push head of the filter plate cylinder (71) extends downward to the inner side of the filter support and is connected to a fixed filter plate (72); a first filter plate (72) is provided in the middle of the fixed filter plate (72). a filter channel (73); four corners of the fixed filter plate (72) are respectively provided with filter plate matching grooves (74) with a constricted mouth; a side of the fixed filter plate (72) is provided with a movable filter plate (75); a circular second filter channel (77) is provided in the middle of the movable filter plate (75); four corners of the fixed filter plate (72) are respectively provided with filter plate matching columns (76), and the filter plate matching columns (76) are slidably matched in the filter plate matching grooves (74); an oscillation return spring (78) is passed through the filter plate matching columns (76); a filter net (79) is provided at the outer edge of the second filter channel (77); filter plate racks (80) are provided on both sides of the movable filter plate (75) facing each other; sealing recesses are respectively provided on the outer sides of the movable filter plate (75) and the fixed filter plate (72); transverse sliding grooves (81) are provided on both sides of the filter bracket; a transverse push rod (82) is provided at the side end of the filter bracket, and a push head of the transverse push rod (82) extends into the transverse sliding groove (81) and is connected to a scraping component.

10. The filtration system for chloroprene rubber according to claim 9, characterized in that: The scraping assembly comprises transverse sliding blocks (83) arranged on both sides, the transverse sliding blocks (83) are respectively slidably matched in the transverse sliding grooves (81) on both sides, the push head of the transverse pushing rod (82) is connected to the side of the transverse sliding block (83), the scraper pressing shaft (84) is rotationally matched with the transverse sliding blocks (83) on both sides through bearings, and the two sides of the scraper pressing shaft (84) are respectively key-connected with filter plate gears (85), and the filter plate gears (85) are used to contact and match with the filter plate rack (80); the scraper pressing shaft (84) is key-connected with two ratchet gears (86), and the ratchet gears (86) are connected to the filter plate rack (80). ) is located between the two filter plate gears (85); a pressure sleeve (87) is rotatably engaged on the scraper pressure shaft (84), and a scraping plate (92) is provided on the lower side of the two pressure sleeves (87); a ratchet shaft is provided on the side of the pressure sleeve (87), and a ratchet clamp (88) is rotatably engaged on the ratchet shaft through a torsion spring; the ratchet clamp (88) is pressed onto the ratchet gear (86) through the torsion spring; a magnet bracket (89) is fixed between the two transverse sliding blocks (83), and two mounting frames (90) are provided on the upper side of the magnet bracket (89), and the electromagnet (91) is fixed on the mounting frame (90).

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