A water purification device based on MBR flexible flat membrane permeation

Abstract

The present invention relates to the technical field of water purification, and discloses a water purification device based on MBR flexible flat membrane infiltration, including a purification pool, a clean water chamber and a purification chamber are provided on the purification pool, a membrane frame is placed inside the purification chamber, a membrane stack is placed on the membrane frame, and the membrane stack is used to perform infiltration filtration on sewage. Through the design of the purification mechanism, the membrane stack performs infiltration filtration on the sewage, and the infiltrated water enters the delivery pipe through the water collecting pipe, and then is pumped into the clean water chamber through the first pump body. During this period, if a single membrane stack needs to be replaced or repaired, after the magnetic difference between the metal frame on one side of the membrane stack and the corresponding first electromagnet is released, the positioning plate is controlled to leave the auxiliary plate on one side of the membrane stack, and the membrane stack can be quickly removed, thereby avoiding the troublesome situation of removing the entire membrane frame when replacing the membrane stack.

Description

Technical Field

[0001] The invention relates to the technical field of water purification, in particular to a water purification device based on MBR flexible flat membrane permeation. Background Art

[0002] MBR, also known as membrane bioreactor, is a new water treatment technology that combines activated sludge method with membrane separation technology. There are many types of membranes. According to the separation mechanism, there are reaction membranes, ion exchange membranes, osmosis membranes, etc.; according to the properties of the membranes, there are natural membranes and synthetic membranes; according to the structural type of the membrane, there are flat-plate type, tubular type, spiral type and hollow fiber type, etc. Compared with traditional flat-plate membranes, flexible MBR flat-plate membranes have good mechanical properties, and can also maintain stable operation of high flux at higher activated sludge concentrations, and correspondingly have superior anti-pollution performance.

[0003] The Chinese patent application with publication number CN218755153U proposes a flexible flat membrane sewage treatment membrane group, including a mounting frame and a clamping block, wherein the outer ends of the plurality of clamping blocks are fixedly connected to the mounting frame, the outer walls of the clamping blocks on both sides are slidably connected to the bracket, the left side of the mounting frame is fixedly connected to the filter plate, the interior of the clamping block is provided with a disassembly device, and the interior of the bracket is provided with a fixing device. Through the cooperation between the rolling ball, the conical block, the second screw and the slider, the user turns the second screw on any two sides with a hexagonal wrench, the second screw drives the conical block to move upward, and the conical block drives the slider to move upward along the slide groove of the clamping block, and when the conical block moves to the upper limit position, the rolling balls on both sides are released from the contact with the bracket groove, thereby solving the problem that the existing sewage treatment membrane group is not convenient for disassembling any flexible flat membrane and thus is not convenient for its maintenance and inspection.

[0004] The above device solves the problem that it is not convenient to disassemble any flexible flat membrane of the existing sewage treatment membrane group and thus it is not convenient to maintain and overhaul it. However, in actual water purification work, multiple flat membrane stacks are often required to be added to a treatment pool. The above device is similar to the existing structure and cannot flexibly replace a single flat membrane stack. Accordingly, when a single flat membrane stack is seriously blocked and needs to be replaced, the entire membrane frame can only be lifted up before it can be disassembled, which is not convenient enough to operate. Summary of the invention

[0005] In order to solve the above-mentioned problems, the present invention provides a water purification device based on MBR flexible flat membrane permeation.

[0006] The present invention provides a water purification device based on MBR flexible flat membrane permeation, which adopts the following technical solution:

[0007] A water purification device based on MBR flexible flat membrane permeation, comprising a purification tank, a clean water chamber and a purification chamber are provided on the purification tank, a membrane frame is placed inside the purification chamber, a membrane stack is placed on the membrane frame, the membrane stack is used for permeating and filtering sewage, a purification mechanism is provided on the membrane frame, a U-shaped plate is provided on the top of the purification tank, a grabbing mechanism is provided on the U-shaped plate, and the grabbing mechanism is used for grabbing the membrane stack for taking and placing;

[0008] The purification mechanism includes a delivery pipe, the delivery pipe is arranged at the top of the purification tank, a water collecting pipe is arranged inside the purification chamber, the water collecting pipe is fixedly connected to one side of the delivery pipe, a rectangular plate is arranged on the side of the water collecting pipe tending to the membrane stack, a telescopic pipe is arranged between the rectangular plate and the water collecting pipe, a sleeve and a first electromagnet are respectively fixedly connected to one side of the rectangular plate, a metal frame and a joint are fixedly connected to one side of the membrane stack, and the first electromagnet and the metal frame have different magnetic properties;

[0009] An L-shaped plate is fixedly connected to the top of the membrane frame, an auxiliary plate is fixedly connected to one side of the membrane stack, a positioning plate is arranged on the top of the L-shaped plate, the positioning plate passes through the top wall of the L-shaped plate, a through groove is opened on the auxiliary plate, and when the membrane stack is placed on the membrane frame, the positioning plate passes through the through groove and matches with the through groove.

[0010] Preferably, a first electric push rod is fixedly connected to the top of the L-shaped plate, and the top of the first electric push rod is fixedly connected to the top of the inner side of the positioning plate. A bracket and a fixed plate are fixedly connected to the purification tank, and the delivery pipe passes through the fixed plate and is fixedly connected to the fixed plate. A first pump body is fixedly connected to the top of the bracket, and the input end of the first pump body is fixedly connected to the delivery pipe, and the output end of the first pump body is fixedly connected to a drain pipe, and the drain pipe extends to the inside of the clean water chamber. A first solenoid valve is provided on the delivery pipe.

[0011] The sleeve is connected with the telescopic tube, the first electromagnet is arranged outside the telescopic tube, a limit rod is fixedly connected inside the purification chamber, the limit rod passes through the rectangular plate, and a spring is fixedly connected between the rectangular plate and the water collecting pipe.

[0012] Preferably, metal plug plates are fixedly connected to the front and rear sides of the membrane frame, cross plates are fixedly connected to the front and rear side walls of the inner cavity of the purification chamber, a second electromagnet is fixedly connected inside the cross plate, the metal plug plate passes through the cross plate, and the second electromagnet has different magnetic properties from the metal plug plate.

[0013] Preferably, an air pump is fixedly connected to the top of the bracket, a mounting tube is rotatably connected to the output end of the air pump, an air supply pipe is fixedly connected to the membrane frame, the air supply pipe is threadedly connected to the mounting tube, and an exhaust hole is opened on the air supply pipe.

[0014] Preferably, two strong exhaust pipes are fixedly connected to the front side of the purification tank, and control valves are arranged on the two strong exhaust pipes. The two strong exhaust pipes are respectively connected to the clean water chamber and the purification chamber.

[0015] Preferably, the purification mechanism includes a backwash component, which is used to clean the membrane stack. The backwash component includes a liquid storage tank, which is arranged on one side of the purification tank. A second pump body is arranged at the bottom of the liquid storage tank. The input end of the second pump body is connected to the bottom of the liquid storage tank through a pipeline. The output end of the second pump body is fixedly connected with a backwash pipe, which is fixedly connected to a water collecting pipe. A second solenoid valve is arranged on the backwash pipe, and the backwash pipe passes through a fixed plate and is fixedly connected to the fixed plate.

[0016] Preferably, a support frame is fixedly connected to the outer side of the liquid storage tank, the second pump body is fixedly connected to the inner side of the support frame, and a feed hopper is fixedly connected to the top of the liquid storage tank.

[0017] Preferably, the gripping mechanism comprises a moving block, which is arranged on the inner side of the U-shaped plate, and a sleeve is rotatably connected on the moving block, and the sleeve passes through the moving block, and a threaded lifting rod is arranged inside the sleeve, and the threaded lifting rod passes through the sleeve and is connected to the sleeve by a thread, and a limiting rod is fixedly connected to the top of the moving block, and the limiting rod slides with the U-shaped plate and the limiting rod passes through the top wall of the U-shaped plate, and a limiting groove is opened on the threaded lifting rod, and the limiting rod extends into the limiting groove and slides with the inner wall of the limiting groove, and the bottom of the threaded lifting rod is fixedly connected to a supporting plate, and a pressing plate is arranged above the supporting plate, and a threaded adjusting rod is rotatably connected to the inner side of the U-shaped plate, and the front side of the U-shaped plate is fixedly connected to the first motor, and the first motor is fixedly connected to the threaded adjusting rod through an output shaft, and the threaded adjusting rod passes through the moving block and is connected to the moving block by a thread, and a stabilizing rod is fixedly connected to the inner side of the U-shaped plate, and the stabilizing rod passes through the moving block.

[0018] Preferably, a second motor is fixedly connected to the moving block, and the second motor is fixedly connected to the first gear through an output shaft. The second gear is fixedly connected to the outside of the sleeve, and the first gear is arranged on one side of the second gear, and the first gear is meshed with the second gear. A guide plate is fixedly connected to the top of the support plate, and the guide plate passes through a pressure plate. A second electric push rod is fixedly connected to the top of the pressure plate, and the top of the second electric push rod is fixedly connected to the inner side of the guide plate.

[0019] Preferably, the front and rear sides of the purification tank are fixedly connected to track frames, the bottom of the U-shaped plate is fixedly connected to two sliders, the two sliders are respectively slidably connected to the inside of the two track frames, a connecting plate is provided on one side of the purification tank, the connecting plate extends into the inside of the track frame and is fixedly connected to the sliders, a third electric push rod is fixedly connected to one side of the purification tank, and one end of the third electric push rod is fixedly connected to the inner side of the connecting plate.

[0020] In summary, the present invention includes the following beneficial technical effects:

[0021] A water purification device based on MBR flexible flat membrane permeation. Through the design of the purification mechanism, the membrane stack permeates and filters the sewage. The permeated water enters the delivery pipe through the water collecting pipe and is then pumped into the clean water chamber through the first pump body. During this period, if a single membrane stack needs to be replaced or repaired, the magnetic difference between the metal frame on one side of the membrane stack and the corresponding first electromagnet is released, and the positioning plate is controlled to leave the auxiliary plate on one side of the membrane stack, so that the membrane stack can be quickly removed, thereby avoiding the troublesome situation of taking out the entire membrane frame when replacing the membrane stack.

[0022] A water purification device based on MBR flexible flat membrane permeation can flexibly adjust the gripping position through the design of the gripping mechanism to facilitate the removal of membrane stacks at different positions. Compared with manual disassembly, this type of gripping saves more manpower and has higher flexibility, thereby achieving the purpose of convenient replacement of the membrane stack.

[0023] A water purification device based on MBR flexible flat membrane permeation. Through the design of the backwash component, when the membrane stack is heavily polluted due to purification work, the second pump body reversely pumps the cleaning solution in the storage tank into the membrane stack, thereby achieving the purpose of reverse cleaning and effectively ensuring the water purification efficiency of the membrane stack. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the present invention;

[0025] Figure 2 is a cross-sectional view of the structure of the present invention;

[0026] Figure 3 A top view of the structure of the present invention;

[0027] Figure 4 for Figure 3 A in the enlarged view;

[0028] Figure 5 for Figure 3 The enlarged view of point B in the figure;

[0029] Figure 6 It is a structural schematic diagram of the membrane frame of the present invention;

[0030] Figure 7 for Figure 6 The enlarged view of point C in the figure;

[0031] Figure 8 It is a schematic diagram of the structure of the rectangular plate in the present invention;

[0032] Fig. 9 This is a disassembled diagram of the membrane stack and the membrane frame in the present invention;

[0033] Fig.10 It is a structural schematic diagram of the U-shaped plate in the present invention.

[0034] Explanation of the reference numerals: 1, purification tank; 11, clean water chamber; 12, purification chamber; 2, U-shaped plate; 3, purification mechanism; 31, delivery pipe; 32, water collecting pipe; 33, rectangular plate; 34, telescopic pipe; 35, sleeve; 36, first electromagnet; 37, metal frame; 38, joint; 39, L-shaped plate; 391, auxiliary plate; 392, positioning plate; 393, through groove; 394, first electric push rod; 395, bracket; 396, fixing plate; 397, first pump body; 398, drain pipe; 399, first solenoid valve; 381, limit rod; 382, ​​spring; 383, metal plug plate; 384, horizontal plate; 385, second electromagnet; 386, air pump; 387, Mounting pipe; 388, air supply pipe; 389, exhaust hole; 371, forced exhaust pipe; 372, liquid storage tank; 373, second pump body; 374, backwash pipe; 375, second solenoid valve; 376, support frame; 4, membrane frame; 5, membrane stack; 6, grabbing mechanism; 61, moving block; 62, sleeve; 63, threaded lifting rod; 64, limiting rod; 65, support plate; 66, pressure plate; 67, threaded adjustment rod; 68, first motor; 69, stabilizing rod; 691, second motor; 692, first gear; 693, second gear; 694, guide plate; 695, second electric push rod; 696, track frame; 697, slider; 698, connecting plate; 699, third electric push rod. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-10 The present invention is described in further detail.

[0036] The present invention discloses a water purification device based on MBR flexible flat membrane permeation. Figure 1-10 A water purification device based on MBR flexible flat membrane permeation comprises a purification tank 1, a clean water chamber 11 and a purification chamber 12 are provided on the purification tank 1, a membrane frame 4 is placed inside the purification chamber 12, a membrane stack 5 is placed on the membrane frame 4, the membrane stack 5 is used for permeating and filtering sewage, a purification mechanism 3 is arranged on the membrane frame 4, a U-shaped plate 2 is arranged on the top of the purification tank 1, a grabbing mechanism 6 is arranged on the U-shaped plate 2, and the grabbing mechanism 6 is used for grabbing the membrane stack 5 for taking and placing;

[0037] The purification mechanism 3 includes a delivery pipe 31, which is arranged at the top of the purification tank 1. A plurality of water collecting pipes 32 are arranged inside the purification chamber 12. The plurality of water collecting pipes 32 are fixedly connected to one side of the delivery pipe 31. A rectangular plate 33 is arranged on the side of the water collecting pipe 32 tending to the membrane stack 5. A telescopic pipe 34 is arranged between the rectangular plate 33 and the water collecting pipe 32. Both ends of the telescopic pipe 34 are respectively fixedly connected to the rectangular plate 33 and the water collecting pipe 32. A sleeve 35 and a first electromagnet 36 are fixedly connected to one side of the rectangular plate 33. A metal frame 37 and a joint 38 are fixedly connected to one side of the membrane stack 5. The first electromagnet 36 and the metal frame 37 have different magnetic properties.

[0038] Among them, the membrane frame 4 is provided with a mounting frame adapted to the external dimensions of the membrane stack 5, and the mounting frames are distributed in a linear array. When multiple membrane stacks 5 are placed in the mounting frame on the membrane frame 4, the first electromagnet 36 is energized and attracted to the metal frame 37, and at this time, the connector 38 on the membrane stack 5 can be inserted into the corresponding sleeve 35;

[0039] An L-shaped plate 39 is fixedly connected to the top of the membrane frame 4, an auxiliary plate 391 is fixedly connected to one side of the membrane stack 5, a positioning plate 392 is arranged on the top of the L-shaped plate 39, the positioning plate 392 slides through the top wall of the L-shaped plate 39, a through slot 393 is opened on the auxiliary plate 391, when the membrane stack 5 is placed in the installation frame on the membrane frame 4, the positioning plate 392 penetrates the through slot 393 and matches the through slot 393, a first electric push rod 394 is fixedly connected to the top of the L-shaped plate 39, the top of the first electric push rod 394 is fixedly connected to the top of the inner side of the positioning plate 392, a bracket 395 and a fixed plate 396 are fixedly connected to the purification tank 1, the delivery pipe 31 penetrates the fixed plate 396 and is fixedly connected to the fixed plate 396, a first pump body 397 is fixedly connected to the top of the bracket 395, the input end of the first pump body 397 is fixedly connected to the delivery pipe 31, and the output end of the first pump body 397 is fixedly connected to a drain pipe 398, and the drain pipe 398 extends to the inside of the clean water chamber 11;

[0040] A first solenoid valve 399 is provided on the delivery pipe 31. After the sewage is injected into the purification chamber 12, the membrane stack 5 performs infiltration filtration on the sewage. The infiltrated water enters the delivery pipe 31 through the water collecting pipe 32, and is then pumped into the clean water chamber 11 through the first pump body 397. During this period, if it is necessary to replace or repair a single membrane stack 5, after the attraction between the metal frame 37 on one side of the membrane stack 5 and the corresponding first electromagnet 36 is released, the positioning plate 392 is controlled to leave the auxiliary plate 391 on one side of the membrane stack 5, and the membrane stack 5 can be quickly removed, thereby avoiding the troublesome situation of taking out the entire membrane frame 4 when replacing the membrane stack 5.

[0041] The sleeve 35 is connected to the telescopic tube 34, the first electromagnet 36 is arranged on the outside of the telescopic tube 34, the limit rod 381 is fixedly connected to the inside of the purification chamber 12, the limit rod 381 slides through the rectangular plate 33, and a spring 382 is fixedly connected between the rectangular plate 33 and the water collecting pipe 32. The elastic force of the spring 382 pulls the rectangular plate 33 away from the membrane stack 5. When the membrane stack 5 is placed in the installation frame on the membrane frame 4, the first electromagnet 36 is powered off and there is no suction between it and the metal frame 37, and the spring 382 can pull the first electromagnet The iron 36 is away from the membrane stack 5, and then the joint 38 on the membrane stack 5 is separated from the corresponding sleeve 35; the front and rear sides of the membrane frame 4 are fixedly connected with metal plug-in plates 383, and the front and rear side walls of the inner cavity of the purification chamber 12 are fixedly connected with transverse plates 384, and the interior of the transverse plate 384 is fixedly connected with a second electromagnet 385, and the metal plug-in plate 383 penetrates the transverse plate 384, and the second electromagnet 385 has different magnetic properties from the metal plug-in plate 383. After the metal plug-in plate 383 penetrates the transverse plate 384, the second electromagnet 385 is attracted to the metal plug-in plate 383 after being energized;

[0042] An air pump 386 is fixedly connected to the top of the bracket 395, and a mounting pipe 387 is rotatably connected to the output end of the air pump 386. An air supply pipe 388 is fixedly connected to the membrane frame 4. The air supply pipe 388 is threadedly connected to the mounting pipe 387. An exhaust hole 389 is provided on the air supply pipe 388. After the air pump 386 delivers gas to the inside of the air supply pipe 388, the gas is discharged from the exhaust hole 389, thereby causing the flexible flat membrane in the membrane stack 5 to swing and avoid clogging to a certain extent. Two forced exhaust pipes 371 are fixedly connected to the front side of the purification tank 1. Control valves are provided on the two forced exhaust pipes 371. The two forced exhaust pipes 371 are respectively connected to the clean water chamber 11 and the purification chamber 12. The moisture inside the clean water chamber 11 and the purification chamber 12 can be discharged to the outside through the forced exhaust pipes 371.

[0043] The purification mechanism 3 includes a backwash component, which is used to clean the membrane stack 5. The backwash component includes a liquid storage tank 372, which is arranged on one side of the purification tank 1. A second pump body 373 is arranged at the bottom of the liquid storage tank 372. The input end of the second pump body 373 is connected to the bottom of the liquid storage tank 372 through a pipeline. The output end of the second pump body 373 is fixedly connected to a backwash pipe 374, which is fixedly connected to the water collecting pipe 32. A second solenoid valve 375 is arranged on the backwash pipe 374. The backwash pipe 374 passes through the fixed plate 396 and is fixedly connected to the fixed plate 396. The backwash pipe 374 is used to reversely transport the cleaning solution in the liquid storage tank 372 to the inside of the membrane stack 5, and then the membrane stack 5 can be cleaned. A support frame 376 is fixedly connected to the outside of the liquid storage tank 372, and the second pump body 373 is fixedly connected to the inside of the support frame 376. A feed hopper is fixedly connected to the top of the liquid storage tank 372, and the solution inside the liquid storage tank 372 can be injected through the feed hopper.

[0044] The grabbing mechanism 6 includes a moving block 61, which is arranged on the inner side of the U-shaped plate 2. A sleeve 62 is rotatably connected to the moving block 61, and the sleeve 62 passes through the moving block 61. A threaded lifting rod 63 is arranged inside the sleeve 62, and the threaded lifting rod 63 passes through the sleeve 62 and is connected to the sleeve 62 by threads. A limiting rod 64 is fixedly connected to the top of the moving block 61, and the limiting rod 64 is slidably matched with the U-shaped plate 2 and the limiting rod 64 passes through the top wall of the U-shaped plate 2. A limiting groove is opened on the threaded lifting rod 63, and the limiting rod 64 extends into the limiting groove and slidably matches the inner wall of the limiting groove. A support plate 65 is fixedly connected to the bottom of the threaded lifting rod 63, a pressure plate 66 is arranged above the support plate 65, a threaded adjustment rod 67 is rotatably connected to the inner side of the U-shaped plate 2, a first motor 68 is fixedly connected to the front side of the U-shaped plate 2, the first motor 68 is fixedly connected to the threaded adjustment rod 67 through an output shaft, the threaded adjustment rod 67 penetrates the moving block 61 and is connected to the moving block 61 through a thread, a stabilizing rod 69 is fixedly connected to the inner side of the U-shaped plate 2, the stabilizing rod 69 penetrates the moving block 61, and the stabilizing rod 69 provides a limit to the moving block 61 to prevent the moving block 61 from rotating with the threaded adjustment rod 67;

[0045] A second motor 691 is fixedly connected to the moving block 61, and the second motor 691 is fixedly connected to the first gear 692 through the output shaft. A second gear 693 is fixedly connected to the outside of the sleeve 62, and the first gear 692 is arranged on one side of the second gear 693, and the first gear 692 is meshed with the second gear 693. A guide plate 694 is fixedly connected to the top of the support plate 65, and the guide plate 694 slides through the pressure plate 66. A second electric push rod 695 is fixedly connected to the top of the pressure plate 66, and the top of the second electric push rod 695 is fixedly connected to the inner side of the guide plate 694. The guide plate 694 can provide a vertical limit for the pressure plate 66, so that the pressure plate 66 can move up and down stably vertically.

[0046] Track frames 696 are fixedly connected on both the front and rear sides of the purification tank 1, two sliders 697 are fixedly connected to the bottom of the U-shaped plate 2, and the two sliders 697 are respectively slidably connected to the inside of the two track frames 696, and a connecting plate 698 is provided on one side of the purification tank 1. The connecting plate 698 extends into the inside of the track frame 696 and is fixedly connected to the sliders 697. A third electric push rod 699 is fixedly connected on one side of the purification tank 1, and one end of the third electric push rod 699 is fixedly connected to the inner side of the connecting plate 698. After the connecting plate 698 moves, it can drive the two sliders 697 to move synchronously.

[0047] In the actual operation process, the device is first connected to the power supply, and the sewage to be purified can be injected into the purification chamber 12. The membrane stack 5 is composed of a stack of flexible flat membranes, which is an existing structure and will not be described in detail. The membrane stack 5 performs permeation purification on the sewage, and the first pump body 397 works. The permeated water enters the delivery pipe 31 through the water collecting pipe 32, and enters the clean water chamber 11 through the drainage pipe 398 after passing through the first pump body 397 for storage. During this period, the air pump 386 works to deliver air to the air delivery pipe 388, and finally discharges air through the exhaust hole 389 on the air delivery pipe 388 to form bubbles. The addition of bubbles can form a stirring effect on the sewage, and can also cause the flexible flat membrane in the membrane stack 5 to swing, thereby slowing down the blockage caused by the attachment of pollutants, thereby ensuring the water purification performance;

[0048] The liquid storage tank 372 can be injected with a solution for cleaning the membrane stack 5. When the membrane stack 5 is heavily contaminated due to purification work, the second pump body 373 reversely pumps the cleaning solution in the liquid storage tank 372 into the membrane stack 5, thereby achieving the purpose of reverse cleaning, further ensuring the water purification efficiency of the membrane stack 5.

[0049] When it is necessary to replace a single membrane stack 5 at a certain place, first, after the first electric push rod 394 works, it pushes the positioning plate 392 to the auxiliary plate 391 away from the side of the membrane stack 5, and then the third electric push rod 699 works to push and pull the connecting plate 698, and the connecting plate 698 drives the two sliders 697 to move, and the slider 697 drives the U-shaped plate 2 to move. It can be seen from the above connection relationship that the horizontal grabbing position can be adjusted at this time. After the first motor 68 works, it drives the threaded adjustment rod 67 to rotate, and the threaded adjustment rod 67 drives the moving block 61 to move back and forth, so as to adjust the longitudinal grabbing position, and after the second motor 691 works, it can drive the first gear 692 to rotate, the first gear 692 drives the second gear 693 to rotate, and the second gear 693 drives the sleeve 62 to rotate. Since the limiting rod 64 provides a limit for the threaded lifting rod 63, the threaded lifting rod 63 cannot rotate synchronously with the sleeve 62, so after the sleeve 62 rotates, it drives the threaded lifting rod 63 to be raised and lowered, and the grabbing height can be adjusted accordingly.

[0050] After the support plate 65 is positioned directly below the auxiliary plate 391 on the side of the membrane stack 5 to be removed and contacts the bottom of the auxiliary plate 391 through the above adjustment steps, the second electric push rod 695 pushes the pressing plate 66 downward, and the pressing plate 66 moves downward to be inserted into the through slot 393 on the auxiliary plate 391 and squeezes the auxiliary plate 391 between the pressing plate 66 and the support plate 65, the above adjustment steps can be repeated to pull the membrane stack 5 out of the membrane frame 4, and convenient loading and unloading adjustment can be performed accordingly, the operation process is more flexible, and there is no need for excessive manual participation, avoiding the troublesome situation of taking out the entire membrane frame 4 during traditional operation;

[0051] When the above operation is to place the membrane stack 5 in the membrane frame 4, after the membrane stack 5 is placed, the positioning plate 392 is controlled to be inserted into the through slot 393 on the auxiliary plate 391, so that the membrane stack 5 can be limited, and the first electromagnet 36 is energized to adsorb the metal frame 37, so that the rectangular plate 33 moves toward the membrane stack 5. When the first electromagnet 36 adsorbs the metal frame 37, the joint 38 on the membrane stack 5 is inserted into the sleeve 35, and the water in the membrane stack 5 that has been purified by penetration can enter the water collecting pipe 32.

[0052] Finally, when the membrane frame 4 in the device needs to be taken out as a whole, the installation tube 387 is rotated to release the connection between the air supply pipe 388 and the installation tube 387, and the second electromagnet 385 is powered off to give up the adsorption of the metal plug plate 383, and then the membrane frame 4 can be taken out from the purification tank 1.

[0053] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A water purification device based on MBR flexible flat membrane permeation, comprising a purification tank (1), characterized in that: The purification tank (1) is provided with a clean water chamber (11) and a purification chamber (12); a membrane frame (4) is placed inside the purification chamber (12); a membrane stack (5) is placed on the membrane frame (4); the membrane stack (5) is used for permeating and filtering sewage; a purification mechanism (3) is provided on the membrane frame (4); a U-shaped plate (2) is provided on the top of the purification tank (1); a grabbing mechanism (6) is provided on the U-shaped plate (2); the grabbing mechanism (6) is used for grabbing the membrane stack (5) for taking and placing; The purification mechanism (3) comprises a delivery pipe (31), the delivery pipe (31) is arranged at the top of the purification tank (1), a water collecting pipe (32) is arranged inside the purification chamber (12), the water collecting pipe (32) is fixedly connected to one side of the delivery pipe (31), a rectangular plate (33) is arranged on the side of the water collecting pipe (32) tending to the membrane stack (5), a telescopic tube (34) is arranged between the rectangular plate (33) and the water collecting pipe (32), a sleeve (35) and a first electromagnet (36) are respectively fixedly connected to one side of the rectangular plate (33), a metal frame (37) and a joint (38) are fixedly connected to one side of the membrane stack (5), and the first electromagnet (36) and the metal frame (37) have different magnetic properties; An L-shaped plate (39) is fixedly connected to the top of the membrane frame (4), an auxiliary plate (391) is fixedly connected to one side of the membrane stack (5), a positioning plate (392) is arranged on the top of the L-shaped plate (39), the positioning plate (392) passes through the top wall of the L-shaped plate (39), a through groove (393) is provided on the auxiliary plate (391), and when the membrane stack (5) is placed on the membrane frame (4), the positioning plate (392) passes through the through groove (393) and matches with the through groove (393); A first electric push rod (394) is fixedly connected to the top of the L-shaped plate (39), and the top of the first electric push rod (394) is fixedly connected to the top of the inner side of the positioning plate (392). A bracket (395) and a fixing plate (396) are fixedly connected to the purification tank (1). The delivery pipe (31) passes through the fixing plate (396) and is fixedly connected to the fixing plate (396). A first pump body (397) is fixedly connected to the top of the bracket (395). The input end of the first pump body (397) is fixedly connected to the delivery pipe (31). The output end of the first pump body (397) is fixedly connected to a drain pipe (398), and the drain pipe (398) extends to the inside of the clean water chamber (11). A first solenoid valve (399) is provided on the delivery pipe (31); The sleeve (35) is connected to the telescopic tube (34), the first electromagnet (36) is arranged on the outside of the telescopic tube (34), a limit rod (381) is fixedly connected inside the purification chamber (12), the limit rod (381) passes through the rectangular plate (33), and a spring (382) is fixedly connected between the rectangular plate (33) and the water collecting pipe (32); The grabbing mechanism (6) comprises a moving block (61), the moving block (61) is arranged on the inner side of the U-shaped plate (2), the moving block (61) is rotatably connected with a sleeve (62), the sleeve (62) passes through the moving block (61), a threaded lifting rod (63) is arranged inside the sleeve (62), the threaded lifting rod (63) passes through the sleeve (62) and is connected to the sleeve (62) by a thread, a limiting rod (64) is fixedly connected to the top of the moving block (61), the limiting rod (64) is slidably matched with the U-shaped plate (2) and the limiting rod (64) passes through the top wall of the U-shaped plate (2), a limiting groove is opened on the threaded lifting rod (63), and the limiting groove is The control rod (64) extends into the limiting groove and is slidably matched with the inner wall of the limiting groove. The bottom of the threaded lifting rod (63) is fixedly connected to a support plate (65). A pressure plate (66) is arranged above the support plate (65). The inner side of the U-shaped plate (2) is rotatably connected to a threaded adjustment rod (67). The front side of the U-shaped plate (2) is fixedly connected to a first motor (68). The first motor (68) is fixedly connected to the threaded adjustment rod (67) via an output shaft. The threaded adjustment rod (67) passes through the moving block (61) and is connected to the moving block (61) via threads. The inner side of the U-shaped plate (2) is fixedly connected to a stabilizing rod (69). The stabilizing rod (69) passes through the moving block (61). The moving block (61) is fixedly connected to a second motor (691), the second motor (691) is fixedly connected to a first gear (692) via an output shaft, the sleeve (62) is externally fixedly connected to a second gear (693), the first gear (692) is arranged on one side of the second gear (693), and the first gear (692) is meshed with the second gear (693), the top of the support plate (65) is fixedly connected to a guide plate (694), the guide plate (694) passes through the pressure plate (66), the top of the pressure plate (66) is fixedly connected to a second electric push rod (695), and the top of the second electric push rod (695) is fixedly connected to the inner side of the guide plate (694); The front and rear sides of the purification tank (1) are fixedly connected to a track frame (696); the bottom of the U-shaped plate (2) is fixedly connected to two sliders (697); the two sliders (697) are respectively slidably connected to the inside of the two track frames (696); a connecting plate (698) is provided on one side of the purification tank (1); the connecting plate (698) extends into the inside of the track frame (696) and is fixedly connected to the sliders (697); a third electric push rod (699) is fixedly connected to one side of the purification tank (1); one end of the third electric push rod (699) is fixedly connected to the inner side of the connecting plate (698).

2. A water purification device based on MBR flexible flat membrane permeation according to claim 1, characterized in that: The front and rear sides of the membrane frame (4) are fixedly connected with metal plug plates (383), the front and rear side walls of the inner cavity of the purification chamber (12) are fixedly connected with cross plates (384), the interior of the cross plate (384) is fixedly connected with a second electromagnet (385), the metal plug plate (383) passes through the cross plate (384), and the second electromagnet (385) and the metal plug plate (383) have different magnetic properties.

3. A water purification device based on MBR flexible flat membrane permeation according to claim 1, characterized in that: An air pump (386) is fixedly connected to the top of the bracket (395), and a mounting tube (387) is rotatably connected to the output end of the air pump (386). An air supply pipe (388) is fixedly connected to the membrane frame (4), and the air supply pipe (388) is connected to the mounting tube (387) by threads. An exhaust hole (389) is provided on the air supply pipe (388).

4. A water purification device based on MBR flexible flat membrane permeation according to claim 1, characterized in that: Two forced discharge pipes (371) are fixedly connected to the front side of the purification pool (1), and control valves are arranged on the two forced discharge pipes (371). The two forced discharge pipes (371) are respectively connected to the clean water chamber (11) and the purification chamber (12).

5. A water purification device based on MBR flexible flat membrane permeation according to claim 1, characterized in that: The purification mechanism (3) includes a backwash component, which is used to clean the membrane stack (5). The backwash component includes a liquid storage tank (372). The liquid storage tank (372) is arranged on one side of the purification tank (1). A second pump body (373) is arranged at the bottom of the liquid storage tank (372). The input end of the second pump body (373) is connected to the bottom of the liquid storage tank (372) through a pipeline. The output end of the second pump body (373) is fixedly connected with a backwash pipe (374). The backwash pipe (374) is fixedly connected to the water collecting pipe (32). A second solenoid valve (375) is arranged on the backwash pipe (374). The backwash pipe (374) passes through the fixed plate (396) and is fixedly connected to the fixed plate (396).

6. A water purification device based on MBR flexible flat membrane permeation according to claim 5, characterized in that: The outer side of the liquid storage tank (372) is fixedly connected to a support frame (376), the second pump body (373) is fixedly connected to the inner side of the support frame (376), and the top of the liquid storage tank (372) is fixedly connected to a feed hopper.

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