Anti-clogging valve for sewage treatment

Abstract

The application discloses a sewage treatment anti-clogging valve and relates to the valve field.The valve body is provided with two butt-joint pipes which are installed on the outer side of the valve body, one end of the butt-joint pipe is provided with a water pipe, the inner side of the valve body is slidably provided with a valve clack, the bottom inner wall of the valve body is transversely provided with a sealing column, and the bottom of the valve clack is provided with a circular-arc concave surface structure which corresponds to the sealing column; the application further comprises a dirt cleaning mechanism which is used for cleaning dirt on the outer side of the sealing column, the dirt cleaning mechanism is installed on the inner side of the valve body, and the dirt cleaning mechanism comprises a scraper which is installed on the bottom inner wall of the valve body; through the dirt cleaning mechanism, the sealing column can be in a rotating state during the downward movement of the valve clack, the dirt on the sealing column can be scraped off by the scraper and discharged along with water flow, the valve clack can be in contact with the cleaned sealing column, the problem of dirt blockage is solved, and the sealing and anti-clogging effect is achieved.

Description

Technical Field

[0001] This invention relates to the field of valves, specifically to an anti-clogging valve for wastewater treatment. Background Technology

[0002] Wastewater treatment plants are important locations where urban domestic sewage is treated by a series of treatment devices before being discharged into the environment. Valves are one of the key pieces of equipment in these plants. Gate valves are mainly used to control the flow of fluids in pipelines. During the wastewater treatment process, gate valves can shut off or open pipelines as needed to control the flow direction and flow rate of sewage, ensuring the smooth progress of the treatment process.

[0003] Existing gate valves control opening and closing by controlling the up and down movement of the valve disc. When the gate valve is closed, if particulate matter in the sewage settles directly below the valve disc, it can cause blockage in the flow channel at the bottom of the valve, preventing the valve disc from closing. To ensure normal valve closure, existing valves use multiple water spray heads to flush the sludge at the bottom of the valve disc during the valve closing process. However, this can only flush clumps of sludge. When there is a high oil content in the sewage, oily sludge will adhere to the flow channel at the bottom of the valve. The flushing method is insufficient to disperse the oily sludge, leaving a large amount of clumps of sludge, which will still result in the valve disc failing to close. Summary of the Invention

[0004] The purpose of this invention is to provide an anti-clogging valve for wastewater treatment to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A clogging-resistant valve for wastewater treatment includes: a valve body and two symmetrically fixed connecting pipes installed on the outside of the valve body; a water pipe is installed at the end of each connecting pipe away from the valve body, and the water pipe is connected to the connecting pipe by bolts; a valve disc is slidably installed on the inside of the valve body; a sealing post is horizontally placed on the bottom inner wall of the valve body, and the bottom of the valve disc has an arc-shaped concave surface structure corresponding to the sealing post; it also includes: a cleaning mechanism for cleaning dirt on the outside of the sealing post, the cleaning mechanism being installed on the inside of the valve body, the cleaning mechanism including components installed on the valve body. The bottom inner wall has a scraper for cleaning dirt from the surface of the sealing column; a crushing mechanism for breaking up particulate impurities accumulated on the scraper, the crushing mechanism being installed inside the scraper and including multiple metal blades equidistantly arranged inside the scraper, the metal blades being able to break up particulate impurities on the scraper; and a protective mechanism for protecting the bottom of the valve disc, the protective mechanism being installed on the top inner wall of the valve body, the protective mechanism including a protective baffle disposed on the top inner wall of the valve body, the protective baffle being able to prevent dirt from adhering to the bottom of the valve disc.

[0007] Preferably, the cleaning mechanism further includes a movable plate fixedly installed on the top of the valve disc; two screws are rotatably installed on the inner side of the valve body, and the movable plate is threaded between the two screws; an optical shaft for limiting the sliding of the movable plate is fixedly installed on the inner side of the valve body; mounting rods are fixedly installed at both ends of the sealing column, and the mounting rods are rotatably installed on the inner side of the valve body; two symmetrically distributed transmission rods are rotatably installed on the inner side of the valve body, and a first toothed belt is rotatably installed between the transmission rods and the mounting rods; a one-way gear is fixedly installed at the end of the transmission rod away from the first toothed belt; and two symmetrically distributed rack plates are fixedly installed at the bottom of the movable plate, with the two rack plates located directly above the two one-way gears.

[0008] Preferably, the crushing mechanism further includes a mounting plate disposed below the scraper, the bottom of the metal blade is fixedly connected to the top of the mounting plate, push rods are rotatably mounted at both ends of the mounting plate, a connecting rod is rotatably mounted at the end of the push rod away from the mounting plate, an eccentric wheel is hinged to the end of the connecting rod away from the push rod, a sliding cavity is formed on the surface of the scraper for limiting the sliding of the metal blade, the side of the eccentric wheel away from the connecting rod is rotatably mounted on the inner side of the valve body, a synchronous belt is rotatably mounted between the eccentric wheel and the adjacent mounting rod, and the size of the transmission wheel on the eccentric wheel is smaller than that on the mounting rod.

[0009] Preferably, the protective mechanism further includes two positioning rods symmetrically fixedly installed at one end of the protective baffle. The positioning rods are installed on the inner side of the valve body via coil springs. A rubber pad is fixedly installed at the bottom of the valve disc. A first magnet plate is fixedly installed on the side of the protective baffle near the valve disc, and a second magnet plate is fixedly installed on the top inner wall of the valve body. A protective scraper is fixedly installed on the top inner wall of the valve body, and the outer side of the protective scraper contacts the end of the protective baffle near the positioning rod.

[0010] Preferably, a second toothed belt is rotatably mounted between the two screws, a handwheel is provided on the top of the valve body, and the bottom of the handwheel is fixedly connected to the top of the adjacent screw.

[0011] Preferably, two symmetrically distributed guide rods are fixedly installed on the inner side of the valve body, the guide rods pass through the movable plate, and the rack plate is sleeved on the outer side of the guide rods.

[0012] Preferably, both ends of the sealing column are fixedly installed with convex rings, and the inner side of the valve body is provided with an annular groove corresponding to the convex rings.

[0013] Preferably, a plurality of equally spaced fixing screws are installed on the side of the scraper away from the sealing column, and the bottom inner wall of the valve body is provided with mounting grooves corresponding to the fixing screws.

[0014] Preferably, a positioning frame is fitted on the outer side of the first toothed belt, and the positioning frame is fixedly installed on the inner side of the valve body.

[0015] Preferably, a rubber sleeve is provided on the outer side of the metal blade, and the rubber sleeve is fixedly installed on the bottom of the scraper.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The present invention uses a cleaning mechanism to make the sealing column rotate during the downward movement of the valve disc. The scraper can scrape off the dirt on the sealing column and discharge it with the water flow. The valve disc can then contact the cleaned sealing column to solve the problem of dirt blockage, thereby achieving the effect of sealing and preventing blockage.

[0018] 2. The present invention uses a crushing mechanism to move multiple metal blades up and down during the scraping process of removing dirt from the sealing column, thereby crushing the particulate impurities accumulated on the sealing column and preventing them from accumulating on the scraper, thus improving cleaning efficiency.

[0019] 3. The present invention, through a protective mechanism, can provide a shield to the bottom of the valve disc when the valve disc moves upward to open the valve body, preventing impurities in the water flow from adhering to the bottom of the valve disc, ensuring the cleanliness of the bottom of the valve disc, facilitating the sealing connection between the valve disc and the sealing column, and can also allow the first magnetic plate to be attracted to the outside of the valve disc when the valve disc moves downward, preventing impurities from adhering to the protective baffle, thereby achieving the effect of sealing and protection. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a partial cross-sectional view of the movable plate and the connecting pipe in this invention.

[0022] Figure 3 for Figure 2 Enlarged structural diagram of area A in the middle;

[0023] Figure 4 This is a schematic diagram of a partial cross-sectional structure of the valve disc and screw in this invention;

[0024] Figure 5 This is a schematic diagram of a partial cross-sectional structure of the sealing post and the convex ring in this invention;

[0025] Figure 6 This is a schematic diagram of the mounting plate and push rod structure in this invention;

[0026] Figure 7 This is a schematic diagram of a partial cross-sectional structure of the scraper and metal blade in this invention;

[0027] Figure 8 This is a partial cross-sectional structural diagram of the protective baffle and rubber pad in this invention.

[0028] In the diagram: 1. Valve body; 2. Connecting pipe; 3. Water pipe; 4. Valve disc; 5. Sealing column; 6. Scraper; 7. Metal blade; 8. Protective baffle; 9. Moving plate; 10. Screw; 11. Mounting rod; 12. Transmission rod; 13. First toothed belt; 14. One-way gear; 15. Rack plate; 16. Mounting plate; 17. Push rod; 18. Connecting rod; 19. Eccentric wheel; 20. Synchronous belt; 21. Positioning rod; 22. Rubber pad; 23. First magnet plate; 24. Second magnet plate; 25. Protective scraper; 26. Second toothed belt; 27. Handwheel; 28. Guide rod; 29. ​​Convex ring; 30. Fixing screw; 31. Positioning sleeve; 32. Rubber sleeve; 33. Coil spring. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Example 1: Please refer to Figures 1-8 The diagram shows an anti-clogging valve for sewage treatment, comprising a valve body 1 and two symmetrically fixed connecting pipes 2 installed on the outside of the valve body 1. A water pipe 3 is installed at the end of the connecting pipe 2 away from the valve body 1, and the water pipe 3 is connected to the connecting pipe 2 by bolts, improving the convenience of connecting the connecting pipe 2 and the water pipe 3. A valve disc 4 is slidably installed on the inner side of the valve body 1, and a sealing column 5 is horizontally placed on the bottom inner wall of the valve body 1. The bottom of the valve disc 4 has an arc concave surface structure corresponding to the sealing column 5, so that when the bottom of the valve disc 4 contacts the sealing column 5, the arc concave surface of the bottom of the valve disc 4 can abut against the outside of the sealing column 5, thereby achieving sealing and interception of the valve body 1.

[0031] The cleaning mechanism includes a scraper 6 installed on the inner wall of the bottom of the valve body 1. The scraper 6 can clean the dirt on the surface of the sealing column 5. The cleaning mechanism also includes a movable plate 9 fixedly installed on the top of the valve disc 4. Two screws 10 are rotatably installed on the inner side of the valve body 1, and the movable plate 9 is threaded between the two screws 10. A light shaft for limiting the sliding of the movable plate 9 is fixedly installed on the inner side of the valve body 1, so that when the two screws 10 rotate, they can drive the movable plate 9 to move perpendicularly along the outer side of the light shaft and the inner side of the valve body 1. The movable plate 9 can then drive the valve disc 4 to move downward, thereby achieving sealing and throttling of the valve body 1. Mounting rods 11 are fixedly installed at both ends of the sealing column 5. The mounting rod 11 is rotatably mounted on the inner side of the valve body 1. Two symmetrically distributed transmission rods 12 are rotatably mounted on the inner side of the valve body 1. A first toothed belt 13 is rotatably mounted between the transmission rods 12 and the mounting rod 11, so that when the transmission rods 12 rotate, they can drive the mounting rods 11 to rotate via the first toothed belt 13. A one-way gear 14 is fixedly mounted on the end of the transmission rod 12 away from the first toothed belt 13. Two symmetrically distributed rack plates 15 are fixedly mounted on the bottom of the moving plate 9. The two rack plates 15 are respectively located directly above the two one-way gears 14, so that when the moving plate 9 moves downwards, it can drive the one-way gears 14 to rotate via the rack plates 15, thus driving the one-way gears 14 to rotate. When the transmission rod 12 rotates, it drives the mounting rod 11 to rotate via the first toothed belt 13. This causes the mounting rod 11 to rotate the sealing column 5 clockwise. The scraper 6 scrapes away the dirt on the sealing column 5 and discharges it with the water flow. The valve disc 4 then contacts the cleaned sealing column 5 to resolve the problem of dirt blockage. The pulleys fixed on the two screws 10 are engaged with the outer sides of the second toothed belt 26. A handwheel 27 is provided on the top of the valve body 1, and the bottom of the handwheel 27 is fixedly connected to the top of the adjacent screw 10. When the handwheel 27 is rotated, it drives the corresponding screw 10 to rotate, causing the screw 10 to drive the other screw 10 to rotate synchronously via the second toothed belt 26. The valve body 1 has two symmetrically distributed guide rods 28 fixedly installed on its inner side. The guide rods 28 pass through the moving plate 9, and the rack plate 15 is sleeved on the outer side of the guide rods 28, so that the rack plate 15 can move along the outer side of the guide rods 28, providing support for the rack plate 15 and improving the smoothness of the movement of the rack plate 15. Both ends of the sealing column 5 are fixedly installed with convex rings 29, and the inner side of the valve body 1 is provided with an annular groove corresponding to the convex rings 29. The outer diameter of the convex rings 29 is larger than the outer diameter of the sealing column 5, so that the convex rings 29 can abut in the annular groove, providing support and positioning for both ends of the sealing column 5, and ensuring that the sealing column 5 is aligned with the valve disc 4.

[0032] Example 2: Please refer to Figures 2-7This embodiment further illustrates Example 1. The crushing mechanism shown in the figure includes multiple metal blades 7 equidistantly arranged inside the scraper 6. The metal blades 7 can crush particulate impurities on the scraper 6. The crushing mechanism also includes a mounting plate 16 disposed below the scraper 6. The bottom of the metal blades 7 is fixedly connected to the top of the mounting plate 16. Push rods 17 are rotatably mounted on both ends of the mounting plate 16. A connecting rod 18 is rotatably mounted on the end of the push rod 17 away from the mounting plate 16. An eccentric wheel 19 is hinged to the end of the connecting rod 18 away from the push rod 17. A sliding cavity is opened on the surface of the scraper 6 for the metal blades 7 to slide in a limited position. When the eccentric wheel 19 rotates, it can push the push rod 17 to move through the connecting rod 18. The push rod 17 drives the mounting plate 16 to move, causing the mounting plate 16 to drive the multiple metal blades 7 to move up and down reciprocally along the sliding cavity of the scraper 6, crushing the particulate impurities on the scraper 6, making it easier for the water to discharge the impurities. The side of the eccentric wheel 19 away from the connecting rod 18 is rotatably mounted inside the valve body 1. A synchronous belt 20 is rotatably mounted between the eccentric wheel 19 and the adjacent mounting rod 11. The size of the transmission wheel on the eccentric wheel 19 is smaller than that on the mounting rod 11, so that when the mounting rod 11 rotates, it can drive the eccentric wheel 19 to rotate through the synchronous belt 20. The rotation speed of the eccentric wheel 19 is greater than that of the mounting rod 11. Multiple equally spaced fixing screws 30 are installed on the side of the scraper 6 away from the sealing column 5. The bottom inner wall of the valve body 1 is provided with mounting grooves corresponding to the fixing screws 30, which facilitates the assembly, disassembly and replacement of the scraper 6. A positioning sleeve 31 is fitted on the outer side of the first toothed belt 13 and is fixedly installed on the inner side of the valve body 1, so that the positioning sleeve 31 provides auxiliary positioning for the inner side of the first toothed belt 13. A rubber sleeve 32 is fitted on the outer side of the metal blade 7 and is fixedly installed on the bottom of the scraper 6, so that the metal blade 7 can move along the inner side of the rubber sleeve 32, so that the rubber sleeve 32 provides a seal between the metal blade 7 and the inner side of the sliding cavity of the scraper 6.

[0033] Example 3: Please refer to Figures 2-8This embodiment further illustrates other embodiments. The protective mechanism shown in the figure includes a protective baffle 8 disposed on the inner wall of the top of the valve body 1. The protective baffle 8 can prevent dirt from adhering to the bottom of the valve disc 4. The protective mechanism also includes two positioning rods 21 symmetrically fixedly installed at one end of the protective baffle 8. The positioning rods 21 are installed on the inner side of the valve body 1 through coil springs 33. Utilizing the elasticity of the coil springs 33, the positioning rods 21 drive the protective baffle 8 to swing upward, so that the protective baffle 8 blocks the bottom of the valve disc 4. A rubber pad 22 is fixedly installed at the bottom of the valve disc 4, so that the valve disc 4 can contact the sealing column 5 through the rubber pad 22, thereby improving the sealing performance between the valve disc 4 and the sealing column 5. A first magnet plate 23 is fixedly installed on the side of the protective baffle 8 near the valve disc 4, and a second magnet plate 23 is fixedly installed on the inner wall of the top of the valve body 1. Two magnetic plates 24 are used to ensure that when the protective baffle 8 provides cover for the bottom of the valve disc 4, the first magnetic plate 23 can contact the second magnetic plate 24, allowing the protective baffle 8 to adhere to the top inner wall of the valve body 1, preventing impurities in the water from contacting the bottom of the valve disc 4. When the valve disc 4 moves downward, the protective baffle 8 can be pushed to swing downward with the positioning rod 21 as the fulcrum, causing the first magnetic plate 23 to separate from the second magnetic plate 24, and causing the first magnetic plate 23 to be adsorbed on the outside of the valve disc 4, preventing impurities from accumulating between the first magnetic plate 23 and the valve disc 4. A protective scraper 25 is fixedly installed on the top inner wall of the valve body 1, and the outer side of the protective scraper 25 contacts the end of the protective baffle 8 near the positioning rod 21, so that the protective scraper 25 provides cover for one end of the protective baffle 8, preventing impurities from affecting the normal swing of the protective baffle 8.

[0034] Working principle: When sealing and shutting off the valve body 1, the operator rotates the handwheel 27, causing the corresponding screw 10 to rotate. This screw 10, through the second toothed belt 26, drives another screw 10 to rotate synchronously. The two screws 10 drive the moving plate 9 to move downward along the outer side of the optical axis. This causes the moving plate 9 to drive the valve disc 4 and the two rack plates 15 to move downward synchronously. The valve disc 4 pushes the top of the protective baffle 8, causing the protective baffle 8 to swing downward around the positioning rod 21 as the fulcrum. The first magnet at the top of the protective baffle 8... The iron plate 23 detaches from the second magnetic plate 24 on the inner wall of the top of the valve body 1, causing the protective baffle 8 to be attracted to the outside of the valve disc 4 via the first magnetic plate 23. Simultaneously, the two rack plates 15 drive the two one-way gears 14 to rotate, which in turn drive the transmission rod 12 to rotate. This transmission rod 12, via the first toothed belt 13, drives the mounting rod 11 to rotate. The mounting rod 11 then drives the sealing column 5 to rotate clockwise, causing the scraper 6 to scrape away dirt from the outside of the sealing column 5. Simultaneously, the mounting rod 11 drives the eccentric wheel 19 to rotate via the synchronous belt 20. The eccentric wheel 19 drives the connecting rod 18 to perform a circular motion, which in turn pushes the push rod 17 to move. The push rod 17 then moves the mounting plate 16, causing the mounting plate 16 to push multiple metal blades 7 along the sliding cavity inside the scraper 6. As the eccentric wheel 19 rotates, the metal blades 7 move up and down reciprocally within the sliding cavity of the scraper 6. The metal blades 7 can cut apart the particulate impurities at the top of the scraper 6, which are then quickly discharged through the water flow inside the valve body 1. Finally, the rubber pad 22 at the bottom of the valve disc 4 contacts the outer side of the sealing column 5. By utilizing the concave arc structure at the bottom of the valve disc 4, the valve disc 4 can abut against the outside of the cleaned sealing column 5, thereby achieving a sealing and flow-blocking effect on the valve body 1. This solves the problem of traditional valves easily causing dirt blockage on the bottom inner wall. Furthermore, after long-term use, the scraper 6 can be replaced by disassembling the water pipe 3 on the right side of the valve body 1 and removing the fixing screw 30 from the scraper 6. This improves the convenience of disassembling, replacing, and assembling the scraper 6, thus achieving the effect of cleaning and preventing blockage, and ensuring the normal sealing of the valve body 1.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A clogging-preventing valve for wastewater treatment, characterized in that, The utility model provides a valve body and two butt -joint pipes installed on the outside of valve body, and the one end of butt -joint pipe is equipped with the water pipe, and the inside of valve body is equipped with the valve clapper of sliding installation, and the bottom inner wall of valve body is equipped with the sealing column, and the bottom of valve clapper is the circular arc concave surface structure of corresponding sealing column, Further comprising: The cleaning mechanism is used for cleaning dirt outside the sealing column, and the cleaning mechanism is installed on the inner side of the valve body. The cleaning mechanism includes a scraper installed on the bottom inner wall of the valve body. The scraper can clean the dirt on the surface of the sealing column. A moving plate is installed on the top of the valve clapper. Two screw rods are rotatably installed on the inner side of the valve body. The moving plate is threadedly assembled between the two screw rods. A guide shaft is fixedly installed on the inner side of the valve body to limit the sliding of the moving plate. Two mounting rods are installed at both ends of the sealing column, and the mounting rods are rotatably installed on the inner side of the valve body. Two transmission rods are rotatably installed on the inner side of the valve body, and a first toothed belt is rotatably installed between the transmission rods and the mounting rods. A one-way gear is fixedly installed at one end of the transmission rod. Two rack plates are installed at the bottom of the moving plate, and the two rack plates are located directly above the two one-way gears, respectively. The broken material mechanism is used for cutting the accumulated particle impurities on the scraper. The broken material mechanism is installed on the inner side of the scraper. The broken material mechanism includes a plurality of metal blades that are equidistantly arranged on the inner side of the scraper. The metal blades can break the particle impurities on the scraper. An installation plate is arranged below the scraper. The bottom of the metal blade is fixedly connected to the top of the installation plate. A push rod is rotatably installed at both ends of the installation plate. A connecting rod is rotatably installed at one end of the push rod. An eccentric wheel is hingedly assembled at one end of the connecting rod. A sliding cavity is formed on the surface of the scraper to limit the sliding of the metal blade. The eccentric wheel is rotatably installed on the inner side of the valve body. A synchronous belt is rotatably installed between the eccentric wheel and the adjacent mounting rod. The transmission wheel on the eccentric wheel is smaller in size than the transmission wheel on the mounting rod. The protection mechanism is used for protecting the bottom of the valve clapper. The protection mechanism is installed on the top inner wall of the valve body. The protection mechanism includes a protection baffle arranged on the top inner wall of the valve body. The protection baffle can prevent dirt from adhering to the bottom of the valve clapper. Two positioning rods are installed at one end of the protection baffle. The positioning rods are installed on the inner side of the valve body through a coil spring. A rubber pad is installed at the bottom of the valve clapper. A first magnet plate is fixedly installed on one side of the protection baffle. A second magnet plate is fixedly installed on the top inner wall of the valve body. A protection scraping strip is fixedly installed on the top inner wall of the valve body, and the outer side of the protection scraping strip is in contact with one end of the protection baffle. A second toothed belt is rotatably installed between the two screw rods. A hand wheel is arranged on the top of the valve body, and the bottom of the hand wheel is fixedly connected to the top end of the adjacent screw rod.

2. The anti-fouling valve for sewage treatment according to claim 1, characterized in that: Two guide rods are installed on the inner side of the valve body. The guide rods penetrate the moving plate, and the rack plates are sleeved on the outer side of the guide rods.

3. The anti-fouling valve for sewage treatment according to claim 1, characterized in that: Convex rings are installed at both ends of the sealing column, and annular grooves corresponding to the convex rings are formed on the inner side of the valve body.

4. The anti-fouling valve for sewage treatment according to claim 1, characterized in that: A plurality of fixed screws are installed on one side of the scraper, and installation grooves corresponding to the fixed screws are formed on the bottom inner wall of the valve body.

5. The anti-fouling valve for sewage treatment according to claim 1, characterized in that: A positioning sleeve frame is sleeved on the outer side of the first toothed belt, and the positioning sleeve frame is installed on the inner side of the valve body.

6. The anti-fouling valve for sewage treatment according to claim 1, characterized in that: ​ 7. The anti-fouling valve for sewage treatment according to claim 1, characterized in that: The outer side of the metal blade is sleeved with a rubber sleeve, and the rubber sleeve is installed at the bottom of the scraper.

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