A backwashing mechanism for a filter cloth filter

Abstract

The utility model discloses a kind of backwashing mechanisms for filter cloth filter tank, belong to filter equipment technical field, including filter tank body, the inside upper end of filter tank body is fixedly connected with buffer water tank, the inside intermediate of filter tank body is movably connected with filter water pipeline, the surface of filter water pipeline is fixedly connected with several filter cloth tray, one end of filter water pipeline is equipped with driving device, the inside one side of filter tank body is fixedly connected with adjusting installation component, the bottom end of adjusting installation component is sealingly connected with several blowdown hose, one end of blowdown hose is connected with dirt collection component, and dirt collection component is sealingly installed with blowdown pump at one end;The utility model can conveniently and accurately position installation to the scraping frame by setting adjusting installation component, ensure the convenience of equipment use, adjust the position of limiting stopper manually at the same time, reduce the cost of adjustment, ensure the abutting strength of limiting stopper to scraping frame, improve the stability of equipment use.

Description

Technical Field

[0001] This utility model belongs to the field of filtration equipment technology, specifically relating to a backwashing mechanism for filter cloth filter beds. Background Technology

[0002] Cloth filters are an effective method for purifying water. They can effectively remove harmful substances from water, such as organic matter, heavy metals, and microorganisms, making the water cleaner. The working principle of a cloth filter is that water enters the filter bed through the filter cloth. Contaminants on the cloth are adsorbed. After the contaminants are adsorbed, the clean water continues to flow into the filter bed, where contaminants are intercepted by the cloth, and finally, clean water flows out of the filter bed. The advantages of cloth filters are simple installation, low operating and maintenance costs, and the ability to effectively remove harmful substances from water, such as organic matter, heavy metals, and microorganisms, resulting in cleaner water.

[0003] The existing backwashing mechanism for filter cloth filter tanks is inconvenient to disassemble and assemble during use, and it is impossible to quickly remove and replace the clogged scraper, which affects the cleaning quality of the filter cloth disc, reduces the working efficiency, and the position adjustment of the limit frame is costly and wasteful of resources. When dealing with scraped dirt, multiple sets of pipes are prone to blockage, resulting in low equipment sewage discharge efficiency and affecting cleaning efficiency. Utility Model Content

[0004] To address the problems mentioned in the background section, this invention provides a backwashing mechanism for filter cloth filter beds, which features convenient assembly and disassembly and high sewage discharge efficiency.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a backwashing mechanism for a filter cloth filter, comprising a filter body, a buffer water tank fixedly connected to the upper part of the filter body, a filter pipe movably connected to the middle of the filter body, a plurality of filter cloth discs fixedly connected to the surface of the filter pipe, a driving device installed at one end of the filter pipe, an adjustment and installation assembly fixedly connected to one side of the filter body, a plurality of sewage discharge hoses sealed to the bottom end of the adjustment and installation assembly, a sewage collection assembly connected to one end of the sewage discharge hoses, and a sewage pump sealed to one end of the sewage collection assembly; The adjustment and installation assembly includes a fixed support rod, which is fixedly connected to the middle of the interior of the filter body. Several limiting springs are sleeved on the surface of the fixed support rod, and positioning devices are connected to both ends of the limiting springs. An adjustment device is installed on one side of the filter body corresponding to the positioning device. A movable frame is fixedly connected to the upper end of the adjustment device, and an installation frame is fixed to the bottom end of the movable frame. Several limiting blocks are installed inside the installation frame.

[0006] Preferably, the mounting bracket has several threaded holes inside corresponding to the limiting blocks, and fastening bolts are threaded inside the threaded holes.

[0007] Preferably, the adjusting device includes a limiting frame, which is symmetrically fixed on one side surface of the filter body. A rack plate is movably connected inside the limiting frame. Limiting sliders are symmetrically fixed on both sides of the bottom end of the rack plate. A guide frame is fixed on one side of the limiting frame corresponding to the rack plate. An installation rod is connected inside the guide frame. A positioning spring is sleeved on the surface of the installation rod. A positioning tooth block is fixed at one end of the positioning spring.

[0008] Preferably, a movable shaft is installed at the end of the mounting rod away from the positioning tooth block, and a pull rod is fixed to the surface of the movable shaft.

[0009] Preferably, the limiting frame is configured as a U-shaped frame, with the two sides of the positioning teeth fitting against the inner wall surface of the guide frame.

[0010] Preferably, the positioning device includes a movable seat, which is movably connected to the surface of the fixed support rod. A mounting column is fixed to the upper end of the movable seat, and a fixed spring is fixed inside the mounting column. A positioning block is fixed to one end of the fixed spring, and a sliding block is fixed to the upper end of the positioning block. A positioning plate is sleeved on the surface of the mounting column, and a scraping frame is fixed to one end of the positioning plate.

[0011] Preferably, one side of the movable seat is attached to the inner wall surface of the filter body, and a limiting groove is formed at the top of the mounting column corresponding to the sliding block.

[0012] Preferably, the waste collection assembly includes a collection box, which is fixed to the bottom of one side of the filter body. A collection frame is inserted into the inside of the collection box. A grid plate is fixed to both sides of the collection frame. A sealing cover is fixed to the top of the collection frame. A fixed shaft is fixed to the top of the sealing cover. A rotating frame is movably mounted on the surface of the fixed shaft. Guide columns are symmetrically fixed inside the rotating frame. A support spring is sleeved on the surface of the guide column. A movable slider is connected to one end of the support spring. A connecting block is fixed in the middle of the surface of the movable slider. A damping rotating shaft is installed at the bottom of the connecting block. A biting plate is fixed to the surface of the damping rotating shaft.

[0013] Preferably, the bite plate has a holding groove inside, and the bottom of the collection box is provided with a snap-fit ​​block corresponding to the bite plate.

[0014] Preferably, a sealing ring is bonded to the bottom edge of the sealing cap.

[0015] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model, by setting an adjustable installation component, allows for convenient and precise positioning and installation of the scraping frame, ensuring ease of use of the equipment. At the same time, the position of the limit block can be manually adjusted, reducing adjustment costs, ensuring the contact strength of the limit block with the scraping frame, and improving the stability of the equipment.

[0016] 2. This utility model, by setting up a waste collection component, allows waste to enter the collection rack inside the collection box from the drain hose at the bottom of the scraper for collection. The grid plate can filter and block the waste, ensuring the collection effect and preventing blockage. The sealing cover can be lifted to pull the collection rack out of the collection box for cleaning, ensuring the convenience of waste disposal and improving the quality of equipment use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the structure of this utility model; Figure 3 This is a schematic diagram of the adjustment and installation component structure of this utility model; Figure 4 This is a schematic diagram of the adjustment device structure of this utility model; Figure 5 This is a schematic diagram of the positioning device structure of this utility model; Figure 6 This is a schematic diagram of the waste collection component of this utility model.

[0018] In the diagram: 1. Filter body; 2. Sludge collection assembly; 20. Support spring; 21. Guide column; 22. Connecting block; 23. Damping shaft; 24. Engaging plate; 25. Movable slider; 26. Fixed shaft; 27. Sealing cover; 28. Collection rack; 29. ​​Grating plate; 210. Collection box; 211. Rotating frame; 3. Sludge pump; 4. Filter pipe; 5. Adjustment and installation assembly; 51. Movable frame; 52. Mounting frame; 53. Adjustment device; 531. Rack plate; 532. Guide frame; 533 534. Pull rod; 535. Mounting rod; 536. Positioning spring; 537. Limiting bracket; 538. Limiting slider; 54. Positioning tooth block; 55. Positioning device; 541. Scraping bracket; 542. Positioning plate; 543. Sliding block; 544. Positioning stop; 545. Movable seat; 546. Fixed spring; 547. Mounting column; 55. Limiting spring; 56. Fixed support rod; 57. Limiting stop; 58. Fastening bolt; 6. Filter cloth disc; 7. Buffer water tank; 8. Drive device; 9. Sewage discharge hose. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example 1 Please see Figure 1-6 The present invention provides the following technical solution: a backwashing mechanism for a filter cloth filter, comprising a filter body 1, a buffer water tank 7 fixedly connected to the upper end of the filter body 1, a filter water pipe 4 movably connected to the middle of the filter body 1, a plurality of filter cloth discs 6 fixedly connected to the surface of the filter water pipe 4, a driving device 8 installed at one end of the filter water pipe 4, an adjustment and installation assembly 5 fixedly connected to one side of the filter body 1, a plurality of sewage discharge hoses 9 sealed to the bottom end of the adjustment and installation assembly 5, a sewage collection assembly 2 connected to one end of the sewage collection assembly 9, and a sewage pump 3 sealed to one end of the sewage collection assembly 2; The adjustment and installation assembly 5 includes a fixed support rod 56, which is fixedly connected to the middle of the interior of the filter body 1. Several limiting springs 55 are sleeved on the surface of the fixed support rod 56. Positioning devices 54 are connected to both ends of the limiting springs 55. An adjustment device 53 is installed on one side of the filter body 1 corresponding to the positioning device 54. A movable frame 51 is fixedly connected to the upper end of the adjustment device 53. An installation frame 52 is fixed to the bottom end of the movable frame 51. Several limiting blocks 57 are installed inside the installation frame 52.

[0021] Specifically, the mounting bracket 52 has several threaded holes corresponding to the limit stop 57 inside, and fastening bolts 58 are threaded inside the threaded holes.

[0022] By adopting the above technical solution, the limit block 57 can be easily disassembled and replaced, ensuring the convenience of equipment maintenance.

[0023] Specifically, the adjusting device 53 includes a limiting frame 536, which is symmetrically fixed on one side surface of the filter body 1. A rack plate 531 is movably connected inside the limiting frame 536. Limiting sliders 537 are symmetrically fixed on both sides of the bottom end of the rack plate 531. A guide frame 532 is fixed on one side of the limiting frame 536 corresponding to the rack plate 531. An installation rod 534 is connected inside the guide frame 532. A positioning spring 535 is sleeved on the surface of the installation rod 534. A positioning tooth block 538 is fixed to one end of the positioning spring 535.

[0024] By adopting the above technical solution, pulling the pull rod 533 drives the mounting rod 534 and the positioning tooth block 538 to move. At the same time, the positioning spring 535 is compressed. Then, the rack plate 531 slides down along the inside of the limiting frame 536, causing the movable frame 51 at the top of the rack plate 531 to descend. The limiting block 57 at the bottom of the movable frame 51 moves down and abuts against one side of the movable seat 545. The movable seat 545 moves along the fixed support rod 56 under force, and the limiting spring 55 is compressed under force, causing the scraping frame 541 to be pressed against the surface of the filter cloth disc 6. After the scraping frame 541 is fixed, the pull rod 533 is released, allowing the positioning spring 535 to return to its original position. This causes the positioning tooth block 538 to engage with one side of the rack plate 531 to limit its movement, ensuring the stability of the limiting block 57. Then, the drive device 8 is turned on to drive the water filter pipe 4 and the filter cloth disc 6 on its surface to rotate, so that the scraping frame 541 scrapes and cleans the surface of the filter cloth disc 6, ensuring the quality of equipment use.

[0025] Specifically, a movable shaft is installed at the end of the mounting rod 534 away from the positioning tooth block 538, and a pull rod 533 is fixed on the surface of the movable shaft.

[0026] By adopting the above technical solution, the lever 533 can be hung down when not in use, preventing accidental loosening.

[0027] Specifically, the limiting frame 536 is configured as a U-shaped frame, and the positioning teeth 538 are attached to the inner wall surface of the guide frame 532 on both sides.

[0028] By adopting the above technical solution, the limit slider 537 can move easily, ensuring the limiting quality of the equipment and preventing the limit slider 537 from disengaging.

[0029] Specifically, the positioning device 54 includes a movable seat 545, which is movably connected to the surface of the fixed support rod 56. A mounting post 547 is fixed to the upper end of the movable seat 545. A fixing spring 546 is fixed inside the mounting post 547. A positioning block 544 is fixed to one end of the fixing spring 546. A sliding block 543 is fixed to the upper end of the positioning block 544. A positioning plate 542 is sleeved on the surface of the mounting post 547. A scraper 541 is fixed to one end of the positioning plate 542.

[0030] By adopting the above technical solution, when backwashing the filter body 1, a scraper 541 can be installed on the upper end of the movable seat 545 for use. The positioning plate 542 is inserted into the mounting column 547. The positioning block 544 is subjected to force, which compresses the fixing spring 546. When the positioning plate 542 is attached to the upper surface of the movable seat 545, the fixing spring 546 resets and pushes the positioning block 544 out of the mounting column 547. The positioning block 544 limits the positioning plate 542, preventing the scraper 541 from loosening and falling, ensuring the convenience of installing the scraper 541 and improving the efficiency of the equipment.

[0031] Specifically, one side of the movable seat 545 is attached to the inner wall surface of the filter body 1, and the top of the mounting column 547 has a limiting groove corresponding to the sliding block 543.

[0032] By adopting the above technical solution, the movement of the movable seat 545 is ensured to be stable, preventing rotation and guaranteeing its support effect on the scraping frame 541.

[0033] In this embodiment, when backwashing the filter body 1, a scraper 541 can be installed on the upper end of the movable seat 545. The positioning plate 542 is inserted into the mounting column 547. The positioning block 544 is subjected to force, which compresses the fixing spring 546. When the positioning plate 542 is attached to the upper surface of the movable seat 545, the fixing spring 546 returns to its original position and pushes the positioning block 544 out of the mounting column 547. The positioning block 544 limits the positioning plate 542, preventing the scraper 541 from loosening and falling, ensuring the convenience of installing the scraper 541 and improving the efficiency of the equipment. Then, pull rod 533 is pulled to move mounting rod 534 and positioning tooth block 538. At the same time, positioning spring 535 is compressed. Then, rack plate 531 slides down along the inside of limit frame 536, causing movable frame 51 at the top of rack plate 531 to descend. Limiting block 57 at the bottom of movable frame 51 moves down and abuts against one side of movable seat 545. Movable seat 545 moves along fixed support rod 56 under force and limiting spring 55 is compressed, causing scraper 541 to adhere to the surface of filter cloth disc 6. After scraper 541 is fixed, pull rod 533 is released to reset positioning spring 535, so that positioning tooth block 538 is engaged with one side of rack plate 531 to limit it, ensuring the stability of limiting block 57. Then, drive device 8 is turned on to drive water filter pipe 4 and filter cloth disc 6 on its surface to rotate, so that scraper 541 scrapes and cleans the surface of filter cloth disc 6, ensuring the quality of equipment use.

[0034] Example 2 The difference between this embodiment and embodiment 1 is that, specifically, the waste collection assembly 2 includes a collection box 210, which is fixedly connected to the bottom of one side of the filter body 1. A collection rack 28 is inserted inside the collection box 210. A grid plate 29 is fixedly connected to both sides of the collection rack 28. A sealing cover 27 is fixedly connected to the top of the collection rack 28. A fixed shaft 26 is fixedly connected to the top of the sealing cover 27. A rotating frame 211 is movably mounted on the surface of the fixed shaft 26. A guide column 21 is symmetrically fixed inside the rotating frame 211. A support spring 20 is sleeved on the surface of the guide column 21. A movable slider 25 is connected to one end of the support spring 20. A connecting block 22 is fixed in the middle of the surface of the movable slider 25. A damping rotating shaft 23 is installed at the bottom of the connecting block 22. A biting plate 24 is fixedly connected to the surface of the damping rotating shaft 23.

[0035] By adopting the above technical solution, the scraped dirt enters the scraper frame 541 for collection, and at the same time, the sewage pump 3 is turned on to perform sewage suction. The dirt enters the collection rack 28 inside the collection box 210 from the sewage hose 9 at the bottom of the scraper frame 541 for collection. The grid plate 29 can filter and block the dirt, ensuring the collection effect and preventing blockage. When it is necessary to process the dirt in the collection rack 28, the movable slider 25 moves down along the guide column 21, which compresses the support spring 20 and disengages the biting plate 24 at the bottom of the connecting block 22 from the locking block. The biting plate 24 is rotated along the damping shaft 23 so that it is no longer located at the bottom of the collection box 210. The movable slider 25 is released, which resets the support spring 20. Then, the sealing cover 27 can be lifted to pull the collection rack 28 out of the collection box 210 for cleaning, ensuring the convenience of dirt processing, improving the quality of equipment use, and preventing pipe blockage.

[0036] Specifically, the bite plate 24 has a holding groove inside, and the bottom of the collection box 210 is provided with a snap-fit ​​block corresponding to the bite plate 24.

[0037] By adopting the above technical solution, it is convenient for staff to hold the interlocking plate 24 and take out the sealing cover 27.

[0038] Specifically, a sealing ring is bonded to the bottom edge of the sealing cap 27.

[0039] By adopting the above technical solution, the sealing strength of the sealing cover 27 after installation is guaranteed, air leakage of the collection box 210 is prevented, and the suction strength of the waste is improved.

[0040] In this embodiment, during use: the scraped dirt enters the scraper frame 541 for collection, while the sewage pump 3 is turned on to perform suction. The dirt enters the collection rack 28 inside the collection box 210 from the sewage hose 9 at the bottom of the scraper frame 541 for collection. The grid plate 29 filters and blocks the dirt, ensuring the collection effect and preventing blockage. When it is necessary to process the dirt in the collection rack 28, the movable slider 25 moves down along the guide column 21, causing the support spring 20 to be compressed. The biting plate 24 at the bottom of the connecting block 22 disengages from the locking block. The biting plate 24 is rotated along the damping shaft 23 so that it is no longer at the bottom of the collection box 210. The movable slider 25 is released, allowing the support spring 20 to return to its original position. Then, the sealing cover 27 can be lifted to pull the collection rack 28 out of the collection box 210 for cleaning. This ensures the convenience of dirt processing, improves the quality of equipment use, and prevents pipe blockage.

[0041] The structure and operating principle of the filter body 1, sewage pump 3, water filtration pipe 4, filter cloth disc, buffer water tank 7 and driving device 8 in this utility model have been disclosed in a backwashing mechanism for a filter cloth filter in Chinese patent application No. 202323398170.3.

[0042] The working principle and usage process of this utility model are as follows: When backwashing the filter body 1, a scraper 541 can be installed on the upper end of the movable seat 545. The positioning plate 542 is inserted into the mounting column 547. The positioning block 544 is subjected to force, which compresses the fixing spring 546. When the positioning plate 542 is attached to the upper surface of the movable seat 545, the fixing spring 546 resets and pushes the positioning block 544 out of the mounting column 547. The positioning block 544 limits the positioning plate 542, preventing the scraper 541 from loosening and falling, ensuring the convenience of installing the scraper 541 and improving the efficiency of the equipment. Then, pull the lever 533 to move the mounting rod 534 and the positioning tooth block 538. At the same time, the positioning spring 535 is compressed. Then, the rack plate 531 slides down along the inside of the limiting frame 536, so that the movable frame 51 at the top of the rack plate 531 descends. The limiting block 57 at the bottom of the movable frame 51 moves down and abuts against one side of the movable seat 545. The movable seat 545 moves along the fixed support rod 56 under force and the limiting spring 55 is compressed under force, so that the scraping frame 541 is pressed against the surface of the filter cloth disc 6. After the scraping frame 541 is fixed, release the lever 533 to reset the positioning spring 535, so that the positioning tooth block 538 is engaged with one side of the rack plate 531 to limit it and ensure the stability of the limiting block 57. Then, turn on the drive device 8 to drive the water filter pipe 4 and the filter cloth disc 6 on its surface to rotate, so that the scraping frame 541 scrapes and cleans the surface of the filter cloth disc 6, ensuring the quality of equipment use. The scraped-off dirt enters the scraper frame 541 for collection. Simultaneously, the sewage pump 3 is activated to suction the dirt. The dirt enters the collection rack 28 inside the collection box 210 through the sewage hose 9 at the bottom of the scraper frame 541. The grid plate 29 filters and blocks the dirt, ensuring effective collection and preventing blockages. When it is necessary to process the dirt in the collection rack 28, the movable slider 25 moves down along the guide column 21, compressing the support spring 20. The biting plate 24 at the bottom of the connecting block 22 disengages from the locking block. The biting plate 24 is rotated along the damping shaft 23 so that it is no longer at the bottom of the collection box 210. The movable slider 25 is released, allowing the support spring 20 to return to its original position. Then, the sealing cover 27 can be lifted to remove the collection rack 28 from the collection box 210 for cleaning. This ensures convenient dirt processing, improves the quality of equipment use, and prevents pipe blockages.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A backwashing mechanism for a filter cloth filter bed, comprising a filter bed body (1), wherein a buffer water tank (7) is fixedly connected to the upper end of the filter bed body (1), a filter water pipe (4) is movably connected to the middle of the filter bed body (1), a plurality of filter cloth discs (6) are fixedly connected to the surface of the filter water pipe (4), and a driving device (8) is installed at one end of the filter water pipe (4), characterized in that: An adjustment and installation assembly (5) is fixedly connected to one side of the filter body (1). Several sewage hoses (9) are sealed and connected to the bottom of the adjustment and installation assembly (5). One end of the sewage hoses (9) is connected to a sewage collection assembly (2). A sewage pump (3) is sealed and installed at one end of the sewage collection assembly (2). The adjustment and installation assembly (5) includes a fixed support rod (56), which is fixedly connected to the middle of the inside of the filter body (1). Several limiting springs (55) are sleeved on the surface of the fixed support rod (56). The two ends of the limiting springs (55) are connected to positioning devices (54). An adjustment device (53) is installed on one side of the filter body (1) corresponding to the positioning device (54). A movable frame (51) is fixedly connected to the upper end of the adjustment device (53). An installation frame (52) is fixed to the bottom end of the movable frame (51). Several limiting blocks (57) are installed inside the installation frame (52).

2. The backwashing mechanism for a filter cloth filter bed according to claim 1, characterized in that: The mounting bracket (52) has several threaded holes corresponding to the limiting block (57) inside, and fastening bolts (58) are threaded inside the threaded holes.

3. The backwashing mechanism for a filter cloth filter bed according to claim 1, characterized in that: The adjustment device (53) includes a limiting frame (536), which is symmetrically fixed on one side surface of the filter body (1). A rack plate (531) is movably connected inside the limiting frame (536). Limiting sliders (537) are symmetrically fixed on both sides of the bottom end of the rack plate (531). A guide frame (532) is fixed on one side of the limiting frame (536) corresponding to the rack plate (531). An installation rod (534) is connected inside the guide frame (532). A positioning spring (535) is sleeved on the surface of the installation rod (534). A positioning tooth block (538) is fixed at one end of the positioning spring (535).

4. The backwashing mechanism for a filter cloth filter bed according to claim 3, characterized in that: The mounting rod (534) has a movable shaft mounted at the end away from the positioning tooth block (538), and a pull rod (533) is fixed on the surface of the movable shaft.

5. The backwashing mechanism for a filter cloth filter bed according to claim 3, characterized in that: The limiting frame (536) is configured as a U-shaped frame, and the positioning teeth (538) are attached to the inner wall surface of the guide frame (532) on both sides.

6. The backwashing mechanism for a filter cloth filter bed according to claim 1, characterized in that: The positioning device (54) includes a movable seat (545), which is movably connected to the surface of the fixed support rod (56). The upper end of the movable seat (545) is fixed with a mounting column (547), and a fixing spring (546) is fixed inside the mounting column (547). One end of the fixing spring (546) is fixed with a positioning block (544), and the upper end of the positioning block (544) is fixed with a sliding block (543). A positioning plate (542) is sleeved on the surface of the mounting column (547), and one end of the positioning plate (542) is fixed with a scraper (541).

7. A backwashing mechanism for a filter cloth filter bed according to claim 6, characterized in that: One side of the movable seat (545) is attached to the inner wall surface of the filter body (1), and the top of the mounting column (547) is provided with a limiting groove corresponding to the sliding block (543).

8. The backwashing mechanism for a filter cloth filter bed according to claim 1, characterized in that: The waste collection assembly (2) includes a collection box (210), which is fixed to the bottom of one side of the filter body (1). A collection frame (28) is inserted inside the collection box (210). A grid plate (29) is fixed to both sides of the collection frame (28). A sealing cover (27) is fixed to the top of the collection frame (28). A fixed shaft (26) is fixed to the top of the sealing cover (27). A rotating frame (211) is movably mounted on the surface of the fixed shaft (26). A guide column (21) is symmetrically fixed inside the rotating frame (211). A support spring (20) is sleeved on the surface of the guide column (21). A movable slider (25) is connected to one end of the support spring (20). A connecting block (22) is fixed in the middle of the surface of the movable slider (25). A damping shaft (23) is installed at the bottom of the connecting block (22). A biting plate (24) is fixed to the surface of the damping shaft (23).

9. A backwashing mechanism for a filter cloth filter bed according to claim 8, characterized in that: The bite plate (24) has a holding groove inside, and the bottom of the collection box (210) is provided with a snap-fit ​​block corresponding to the bite plate (24).

10. A backwashing mechanism for a filter cloth filter bed according to claim 8, characterized in that: A sealing ring is bonded to the bottom edge of the sealing cap (27).

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