Sewer sewage filter valve with self-switching filter screen

Abstract

The invention discloses a sewer sewage filter valve with a self-switching filter screen, and belongs to the technical field of sewer sewage filtration, the sewer sewage filter valve comprises a valve body, a water inlet pipe is fixed on one side of the valve body, a support shaft is rotatably arranged in the valve body, and a self-switching mechanism is arranged on the side of the filter screen; the movable shaft rotationally penetrates through the interior of the water inlet pipe, fixing blocks are arranged on the outer side of the movable shaft at equal angles, and the cleaning assembly is arranged at the top of the valve body; and the adjusting mechanism is arranged between the cleaning assembly and the valve body, and the adjusting mechanism is used for adjusting communication and plugging between the cleaning assembly and the valve body and between the water outlet pipe and the valve body. The filter screen self-switching type sewer sewage filter valve is provided with a filter screen self-switching structure, and the filter screen does not need to be manually detached for replacement, so that the phenomenon of poor sewage discharge effect caused by untimely replacement can be avoided, intercepted garbage can be conveniently cleaned out, and the influence of a large amount of residual garbage on subsequent sewage discharge smoothness is prevented.

Description

Technical Field

[0001] The invention relates to the technical field of sewer sewage filtering, in particular to a filter screen self-switching sewer sewage filtering valve. Background Art

[0002] A filter valve is usually arranged in the sewer to separate sewage and impurities. In order to ensure that the sewage can be discharged smoothly, after the filter screen intercepts the impurities, the filter screen needs to be replaced regularly to prevent the filter screen from being blocked by a large amount of garbage and affecting the sewage discharge efficiency. At the same time, the intercepted impurities need to be cleaned after the filter screen is replaced. For example, a sewer sewage filter valve with publication number CN116899310A includes a filter valve body, two groups of sewage pipes are fixedly arranged on both sides of the filter valve body, a filter assembly for filtering function is arranged on the lower side of the sewage pipe, a cleaning assembly for cleaning function is installed on the lower side of the filter assembly, and a control assembly for control function is arranged on the lower side of the cleaning assembly. The filter assembly includes a water pipe fixedly arranged on the lower side of a group of sewage pipes. Through the mutual cooperation between the filter assembly, the cleaning assembly and the control assembly, the double-layer arrangement can increase the filtering efficiency, reduce the passage of impurities, make cleaning more convenient, and reduce the replacement cycle of the filter screen; For example, a backwashing type sewer sewage filter valve with publication number CN117482617A. It includes a buffer shell, the buffer shell is fixedly connected to and connected with a first fixed pipe and a second fixed pipe, the first fixed pipe and the second fixed pipe are distributed in a mirror image, the first fixed pipe and the second fixed pipe are both fixedly connected to a liquid guide shell, a first sliding shell is slidably connected in the liquid guide shell close to the first fixed pipe, a second sliding shell is slidably connected in the liquid guide shell close to the second fixed pipe, and the buffer shell is slidably connected to a first filter plate that cooperates with the second fixed pipe. The flow path of the water flow is controlled by the movement of the first sliding shell and the second sliding shell, thereby achieving the effect of backwashing the impurities accumulated on the first filter plate, thereby improving the filtering efficiency of the device. However, the above-mentioned sewer sewage filter valve still has the following disadvantages during actual use: 1. Most traditional sewer sewage filter valves do not have a structure for automatic switching of the filter screen. Usually, the filter screen needs to be manually removed for cleaning, and then reinstalled or replaced with a new one. This is not only inefficient, but also leads to poor sewage discharge effects due to untimely replacement. 2. After the traditional sewer sewage filter valve intercepts the garbage, since the filter valve is set underground, it is not convenient to clean the intercepted garbage. Usually, the garbage is hooked out manually, so there is a lot of garbage remaining, which still affects the smoothness of subsequent sewage discharge.

[0003] In view of the above problems, it is urgent to carry out innovative design based on the original sewage filter valve. Summary of the invention

[0004] The purpose of the present invention is to provide a self-switching sewer sewage filter valve with a filter screen to solve the problem that most of the traditional sewer sewage filter valves proposed in the above background technology do not have a structure for self-switching the filter screen, and usually require manual removal of the filter screen for cleaning, which is not only inefficient, but also leads to poor sewage discharge effect due to untimely replacement. Since the filter valve is set underground, it is not convenient to clean the intercepted garbage, and a large amount of garbage is likely to remain, which still affects the smoothness of subsequent sewage discharge.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a filter screen self-switching sewer sewage filter valve, comprising a valve body, a water inlet pipe is fixed on one side of the valve body, and a water outlet pipe is arranged at the other end of the valve body, a support shaft is arranged inside the valve body for rotation, and a filter screen is fixed at equal angles on the side of the support shaft, a self-switching mechanism is arranged on the side of the filter screen, and the self-switching mechanism is used for automatic switching of filter screens at different angles; It also includes: a movable shaft, which rotates and penetrates the inside of the water inlet pipe, a fixed block is arranged at an equal angle on the outside of the movable shaft, and the end of the movable shaft is connected to a cleaning component through a pulley mechanism, the cleaning component is arranged on the top of the valve body, and the cleaning component is used to discharge the garbage intercepted by the filter screen; The regulating mechanism is arranged between the cleaning component and the valve body, and is used to regulate the communication and blocking between the cleaning component and the water outlet pipe and the valve body.

[0006] Preferably, the self-switching mechanism includes a movable rod passing through the filter, and a connecting net is fixed to the end of the movable rod, and the movable rod and the filter are slidably connected. At the same time, the edges of the filter and the connecting net are in close contact with the inner wall of the valve body, and the filter and the connecting net are distributed at equal angles on the support shaft. When the garbage on the connecting net near the water inlet pipe is too heavy, the connecting net can be driven to descend and the movable rod can be driven to slide on the filter.

[0007] Preferably, the bottom of the movable rod near the inner wall of the valve body is fixedly connected to one end of the traction rope, and the other end of the traction rope is connected to the limit rod, and the limit rod slides through the edge of the filter. After the movable rod is lowered, the traction rope can be stretched, thereby pulling the limit rod to slide on the filter.

[0008] Preferably, one end of the limit rod is elastically connected to the inside of the filter through a spring, and the other end of the limit rod is snap-connected to the limit hole, and the limit hole is opened on the inner wall of the valve body. At the same time, the limit hole is arranged at a position close to the water inlet pipe. After the limit rod slides, it is separated from the limit hole, so that the filter and the connecting net can be driven to rotate by the impact of water flow to achieve self-switching.

[0009] Preferably, the cleaning assembly includes a transmission shaft that passes through a plate structure at the top of the fixed tube, and one end of the transmission shaft is connected to the end of the movable shaft through a pulley mechanism, and the other end of the transmission shaft is meshed and driven by a bevel gear set and a connecting shaft. At the same time, the transmission shaft is rotatably arranged at the top of the fixed tube. When the water flow impacts the fixed block, the movable shaft can be driven to rotate, and then the transmission of the pulley mechanism can drive the transmission shaft to rotate.

[0010] Preferably, the fixed tube is fixed to the top of the valve body, and an auger plate is fixedly installed on the outside of the connecting shaft, and the side of the fixed tube is fixedly connected to one end of the connecting tube, and at the same time, the bottom of the fixed tube is connected to the inside of the valve body. When the transmission shaft rotates, the connecting shaft can be driven to rotate through the meshing transmission of the bevel gear set, thereby driving the auger plate to rotate.

[0011] Preferably, the other end of the connecting pipe is connected to the water outlet pipe, and the fixed pipe is connected to the water outlet pipe through the connecting pipe, and the end of the connecting pipe close to the fixed pipe is grid-shaped, and an opening is provided on the top side of the fixed pipe. When the auger plate rotates, on the one hand, the garbage in the filter screen is transferred upward, and then the sewage can be transmitted from the connecting pipe to the water outlet pipe.

[0012] Preferably, the adjusting mechanism includes an adjusting rod arranged on the back side of the valve body, and the adjusting rod rotates and passes through the strip plate on the side of the fixed pipe, and the bottom of the adjusting rod is connected to the side of the disc through a worm gear mechanism. When the adjusting rod is rotated, the disc and the connecting plate can be driven to rotate synchronously through the transmission of the worm gear mechanism.

[0013] Preferably, the side of the disc fits and rotates on the back of the valve body, and a connecting plate is fixed at the edge of the disc, and the cross-section of the connecting plate is arc-shaped. At the same time, the inner wall of the connecting plate fits and slides with the outer wall of the valve body. After the connecting plate rotates, the fixed pipe can be connected to the valve body through the fixed hole, and the valve body and the water outlet pipe can be sealed.

[0014] Preferably, two fixing holes are provided on the connecting plate, and the two fixing holes are alternately connected to the fixed pipe and the water outlet pipe respectively, and the rotation range of the connecting plate is 0-45°. At the same time, limit blocks are fixed on the valve bodies at both ends of the connecting plate. When cleaning the garbage inside the valve body, the water flow channel can be switched without affecting the discharge of sewage.

[0015] Compared with the prior art, the beneficial effects of the present invention are: the filter screen self-switching sewer sewage filter valve has a structure for self-switching the filter screen, and there is no need to manually remove the filter screen for replacement, so it can avoid the phenomenon of poor sewage discharge effect due to untimely replacement, and it is also convenient to clean up the intercepted garbage, preventing a large amount of garbage residue from affecting the smoothness of subsequent sewage discharge. The specific contents are as follows: 1. After being intercepted, the garbage in the sewage can fall on the connecting net. When the garbage on the connecting net gradually increases, pressure is applied to it, thereby driving the movable rod to slide on the filter. After the movable rod descends, it pulls the traction rope and drives the limit rod to slide on the filter, so that the limit rod is separated from the limit hole. Then, the filter is impacted by water flow, which can drive multiple filter screens to rotate through the support shaft, and then the limit rod is re-engaged with the limit hole to limit the filter after rotating 90°, so as to realize the self-switching of the filter; 2. Turn the adjusting rod to drive the disc and the connecting plate to rotate synchronously through the transmission of the worm gear mechanism. After rotating 45°, the connecting plate blocks the outlet pipe and the valve body, so that the fixed pipe is connected to the inside of the valve body through the fixed hole. In this way, the sewage entering the valve body from the water inlet pipe will no longer be discharged from the outlet pipe, but will be transmitted to the fixed pipe. After the garbage is cleaned, turn the adjusting rod in the opposite direction to block the fixed pipe again, so that the valve body 1 can be connected with the outlet pipe. 3. Sewage continuously enters from the water inlet pipe and first contacts with the fixed block to drive it to rotate. Then, the connection shaft is driven to rotate through the transmission of the pulley mechanism and the bevel gear set. The connection shaft can drive the auger plate to rotate in the fixed pipe. At this time, the sewage entering the valve body can push the garbage inside the filter into the fixed pipe, and through the rotation of the auger plate, the garbage and sewage are synchronously transmitted upward. During the transmission process, the sewage can enter the outlet pipe from the connecting pipe and finally be discharged. Due to the interception of the grid structure, the garbage can continue to be transmitted upward through the auger plate and finally be discharged; Furthermore, after the upper filter is rotated to the bottom, the sewage can be continuously discharged to backwash the filter, thereby extending the service life of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the front cross-section structure of the present invention; Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle; Figure 4 This is a schematic diagram of the cross-sectional structure of the valve body of the present invention; Figure 5 For the present invention Figure 4 The enlarged structural diagram at B in the middle; Figure 6 This is a schematic diagram of the cross-sectional structure of the fixed pipe of the present invention; Figure 7 This is a front view structural diagram of the fixing block of the present invention; Figure 8 It is a schematic diagram of the back structure of the present invention; Fig. 9 This is a schematic diagram of the structure of the connecting plate of the present invention; Fig.10 It is a schematic diagram of the structure after the connecting plate of the present invention is rotated.

[0017] In the figure: 1. valve body; 2. water inlet pipe; 3. water outlet pipe; 4. supporting shaft; 5. filter screen; 6. movable rod; 7. connecting net; 8. traction rope; 9. limit rod; 10. limit hole; 11. movable shaft; 12. fixed block; 13. transmission shaft; 14. bevel gear set; 15. connecting shaft; 16. auger plate; 17. fixed pipe; 18. connecting pipe; 19. adjusting rod; 20. worm gear mechanism; 21. disc; 22. connecting plate; 23. fixed hole; 24. limit block. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-Figure 10 , the present invention provides the following technical solutions: Embodiment 1: In order to solve the problems existing in the prior art, the present embodiment adopts the following technical scheme: a filter self-switching sewer sewage filter valve, comprising a valve body 1, a water inlet pipe 2 is fixed on one side of the valve body 1, and a water outlet pipe 3 is arranged at the other end of the valve body 1, a support shaft 4 is rotatably arranged inside the valve body 1, and a filter 5 is fixed at equal angles on the side of the support shaft 4, a self-switching mechanism is arranged on the side of the filter 5, and the self-switching mechanism is used for automatic switching of the filter 5 at different angles; it also includes: a movable shaft 11, which rotates and passes through the inside of the water inlet pipe 2, a fixed block 12 is arranged at equal angles on the outside of the movable shaft 11, and the end of the movable shaft 11 is connected by a leather The pulley mechanism is connected to the cleaning component, the cleaning component is arranged on the top of the valve body 1, and the cleaning component is used to discharge the garbage intercepted by the filter 5; the adjusting mechanism is arranged between the cleaning component and the valve body 1, and the adjusting mechanism is used to adjust the connection and blockage between the cleaning component and the outlet pipe 3 and the valve body 1; first, the sewage in the sewer enters the inside of the valve body 1 from the water inlet pipe 2, and then is filtered through the filter 5, and can finally be discharged from the outlet pipe 3, intercepting the garbage on the filter 5, and then the filter 5 is automatically switched, which on the one hand ensures the smoothness of sewage discharge, and on the other hand facilitates the cleaning of the intercepted garbage, and at the same time can also clean out the garbage intercepted on the filter 5.

[0020] Most of the existing waterway sewage filter valves do not have a structure for automatically switching the filter screen 5. Usually, the filter screen 5 needs to be manually removed for cleaning, and then installed again or replaced with a new filter screen 5. This is not only inefficient, but also leads to poor sewage discharge effects due to untimely replacement. Figure 1-Figure 2 and Figure 4-Figure 5 As shown, the self-switching mechanism includes a movable rod 6 that passes through the filter 5, and a connecting net 7 is fixed to the end of the movable rod 6, and the movable rod 6 and the filter 5 are slidably connected, and the edges of the filter 5 and the connecting net 7 are in close contact with the inner wall of the valve body 1, and the filter 5 and the connecting net 7 are distributed at equal angles on the support shaft 4; the bottom of the movable rod 6 close to the inner wall of the valve body 1 is fixedly connected to one end of a traction rope 8, and the other end of the traction rope 8 is connected to a limiting rod 9, and the limiting rod 9 slides through the edge of the filter 5; one end of the limiting rod 9 is elastically connected to the inside of the filter 5 through a spring, and the other end of the limiting rod 9 is snap-fitted to the limiting hole 10, and the limiting hole 10 is opened on the inner wall of the valve body 1, and the limiting hole 10 is arranged at a position close to the water inlet pipe 2.

[0021] When sewage enters the valve body 1 from the water inlet pipe 2, impurities and garbage in the sewage can be intercepted by the vertical filter screen 5 above, and the garbage is located close to the water inlet pipe 2 and will not affect the discharge of sewage. The intercepted garbage can fall on the connecting net 7 horizontally distributed on the left side. When the garbage on the connecting net 7 gradually increases, pressure is applied to it, thereby driving the movable rod 6 to slide on the filter screen 5, so that the connecting net 7 approaches the filter screen 5. After the movable rod 6 drops, it pulls the traction rope 8, driving the limit rod 9 to slide on the filter screen 5, so that the limit rod 9 is separated from the limit hole 10, and then the water flow impacts the vertical filter screen 5 above, which can drive multiple filter screens 5 to pass through the support The shaft 4 rotates to push the garbage intercepted in the upper left corner to the upper right corner of the valve body 1, and then the vertical filter 5 below rotates to the left side to be horizontal. At this time, the connecting net 7 on the filter 5 is not pushed by the garbage, and the limit rod 9 contracted in the filter 5 can be pushed out through the elasticity of the spring and engaged with the limit hole 10 on the left side, so that multiple filter screens 5 can stop rotating. On the one hand, it will not affect the normal discharge of sewage, and on the other hand, it is convenient to clean up the garbage in the upper right corner of the valve body 1. Therefore, as long as the amount of garbage on the connecting net 7 reaches the limit, the filter 5 can be self-switched. Since there is only one limit hole 10, other filter screens 5 will not be limited when rotating.

[0022] Embodiment 2: After the existing sewer sewage filter valve intercepts the garbage, since the filter valve is set underground, it is not convenient to clean the intercepted garbage. Usually, the garbage is hooked out manually, so there is a lot of garbage remaining, which still affects the smoothness of subsequent sewage discharge. Therefore, this embodiment adopts the following technical solutions, such as Figure 2 , Figure 6-Figure 7 and Fig.10As shown, the cleaning assembly includes a transmission shaft 13 that passes through a plate structure at the top of a fixed tube 17, and one end of the transmission shaft 13 is interconnected with the end of a movable shaft 11 through a pulley mechanism, and the other end of the transmission shaft 13 is meshed and driven by a bevel gear set 14 and a connecting shaft 15, and the transmission shaft 13 is rotatably set at the top of the fixed tube 17; the fixed tube 17 is fixed to the top of the valve body 1, and an auger plate 16 is fixedly installed on the outside of the connecting shaft 15, and the side of the fixed tube 17 is fixedly connected to one end of a connecting tube 18, and the bottom of the fixed tube 17 is connected to the inside of the valve body 1; the other end of the connecting tube 18 is interconnected with the water outlet pipe 3, and the fixed tube 17 is connected to the water outlet pipe 3 through the connecting tube 18, and the end of the connecting tube 18 close to the fixed tube 17 is grid-shaped, and an opening is provided on the top side of the fixed tube 17.

[0023] When cleaning the garbage in the valve body 1, sewage continuously enters from the water inlet pipe 2. First, the sewage contacts the fixed block 12, and the fixed block 12 pushes the movable shaft 11 to rotate. The movable shaft 11 drives the transmission shaft 13 to rotate through the pulley mechanism, and then the transmission shaft 13 drives the connecting shaft 15 to rotate through the meshing transmission of the bevel gear set 14. The connecting shaft 15 can drive the auger plate 16 to rotate in the fixed pipe 17. At this time, the sewage entering the valve body 1 can push the garbage inside the filter screen 5 into the fixed pipe 17, and through the rotation of the auger plate 16, the garbage and sewage are pushed together. The garbage can be transported upward in steps. During the transport process, the sewage can enter the outlet pipe 3 from the connecting pipe 18 and be finally discharged. Due to the interception of the grid structure, the garbage can continue to be transported upward through the auger plate 16 and finally be discharged from the top side of the fixed pipe 17, thereby realizing the automatic cleaning and output of the garbage. At the same time, it does not hinder the continuous discharge of sewage, reduces the residual impurities on the filter screen 5, and facilitates the subsequent interception of the garbage. After the upper filter screen 5 rotates to the bottom, it can also backwash the filter screen 5 through the continuous discharge of sewage, thereby extending the service life of the filter screen 5.

[0024] like Figure 2-Figure 3 and Figure 8-Figure 10 As shown, the regulating mechanism includes an regulating rod 19 arranged on the back of the valve body 1, and the regulating rod 19 rotates and penetrates the strip plate on the side of the fixed pipe 17, and the bottom of the regulating rod 19 is connected to each other through the worm gear mechanism 20 and the side of the disc 21; the side of the disc 21 fits and rotates on the back of the valve body 1, and a connecting plate 22 is fixed at the edge of the disc 21, and the cross-section of the connecting plate 22 is arc-shaped, and the inner wall of the connecting plate 22 fits and slides with the outer wall of the valve body 1; two fixing holes 23 are opened on the connecting plate 22, and the two fixing holes 23 are alternately connected to the fixed pipe 17 and the water outlet pipe 3 respectively, and the rotation range of the connecting plate 22 is 0-45°, and the valve body 1 at both ends of the connecting plate 22 is fixed with a limit block 24.

[0025] The initial position of the connecting plate 22 can block the fixed pipe 17, and realize the connection between the water outlet pipe 3 and the inside of the valve body 1 through the fixed hole 23, so that the sewage can be discharged smoothly. When the garbage in the valve body 1 needs to be cleaned, the adjusting rod 19 can be rotated to drive the disc 21 to rotate synchronously through the transmission of the worm gear mechanism 20, and the disc 21 drives the connecting plate 22 to rotate synchronously. After rotating 45°, it is limited by the limit block 24 and stops rotating. At this time, the connecting plate 22 blocks the water outlet pipe 3 and the valve body 1, and realizes the connection between the fixed pipe 17 and the inside of the valve body 1 through the fixed hole 23. In this way, the sewage entering the valve body 1 from the water inlet pipe 2 is no longer discharged from the water outlet pipe 3, but is transmitted to the fixed pipe 17. After completing the garbage cleaning, the adjusting rod 19 is rotated in the opposite direction to block the fixed pipe 17 again, so as to realize the connection between the valve body 1 and the water outlet pipe 3.

[0026] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A filter screen self-switching sewer sewage filter valve, comprising a valve body (1), a water inlet pipe (2) being fixed to one side of the valve body (1), and a water outlet pipe (3) being arranged at the other end of the valve body (1), a support shaft (4) being rotatably arranged inside the valve body (1), and a filter screen (5) being fixed at equal angles on the side of the support shaft (4), a self-switching mechanism being arranged on the side of the filter screen (5), and the self-switching mechanism being used for automatically switching the filter screen (5) at different angles; It is characterized in that Also includes: A movable shaft (11) is rotatably inserted into the water inlet pipe (2), a fixed block (12) is arranged at an equal angle on the outer side of the movable shaft (11), and the end of the movable shaft (11) is connected to a cleaning component via a pulley mechanism, the cleaning component is arranged on the top of the valve body (1), and is used to discharge garbage intercepted by the filter screen (5); The regulating mechanism is arranged between the cleaning component and the valve body (1), and is used to regulate the communication and blocking between the cleaning component and the water outlet pipe (3) and the valve body (1).

2. The filter screen self-switching sewer sewage filter valve according to claim 1, characterized in that: The self-switching mechanism comprises a movable rod (6) penetrating the filter screen (5), and a connecting net (7) is fixed to the end of the movable rod (6), and the movable rod (6) and the filter screen (5) are slidably connected, and the edges of the filter screen (5) and the connecting net (7) are in close contact with the inner wall of the valve body (1), and the filter screen (5) and the connecting net (7) are distributed at equal angles on the support shaft (4).

3. The filter screen self-switching sewer sewage filter valve according to claim 2, characterized in that: The bottom of the movable rod (6) close to the inner wall of the valve body (1) is fixedly connected to one end of the traction rope (8), and the other end of the traction rope (8) is connected to a limit rod (9), and the limit rod (9) slides through the edge of the filter screen (5).

4. The filter screen self-switching sewer sewage filter valve according to claim 3, characterized in that: One end of the limit rod (9) is elastically connected to the inside of the filter screen (5) via a spring, and the other end of the limit rod (9) is snap-fitted to the limit hole (10), and the limit hole (10) is formed on the inner wall of the valve body (1), and the limit hole (10) is arranged at a position close to the water inlet pipe (2).

5. The filter screen self-switching sewer sewage filter valve according to claim 1, characterized in that: The cleaning assembly comprises a transmission shaft (13) penetrating a plate structure at the top of a fixed tube (17), one end of the transmission shaft (13) being connected to the end of a movable shaft (11) via a pulley mechanism, and the other end of the transmission shaft (13) being meshed and driven by a bevel gear set (14) and a connecting shaft (15), while the transmission shaft (13) is rotatably arranged at the top of the fixed tube (17).

6. The filter screen self-switching sewer sewage filter valve according to claim 5, characterized in that: The fixed pipe (17) is fixed to the top of the valve body (1), and a auger plate (16) is fixedly mounted on the outside of the connecting shaft (15), and the side of the fixed pipe (17) is fixedly connected to one end of the connecting pipe (18), while the bottom of the fixed pipe (17) is connected to the inside of the valve body (1).

7. The filter screen self-switching sewer sewage filter valve according to claim 6, characterized in that: The other end of the connecting pipe (18) and the water outlet pipe (3) are connected to each other, and the fixed pipe (17) and the water outlet pipe (3) are connected to each other through the connecting pipe (18), and one end of the connecting pipe (18) close to the fixed pipe (17) is in a grid shape, and an opening is provided on the top side of the fixed pipe (17).

8. The filter screen self-switching sewer sewage filter valve according to claim 1, characterized in that: The regulating mechanism comprises an regulating rod (19) arranged on the back side of the valve body (1), and the regulating rod (19) rotates and penetrates the strip plate on the side of the fixed pipe (17), and the bottom of the regulating rod (19) is connected to the side of the disc (21) through a worm gear mechanism (20).

9. The filter screen self-switching sewer sewage filter valve according to claim 8, characterized in that: The side surface of the disk (21) fits and rotates on the back surface of the valve body (1), and a connecting plate (22) is fixed at the edge of the disk (21). The cross section of the connecting plate (22) is arc-shaped, and the inner wall of the connecting plate (22) fits and slides with the outer wall of the valve body (1).

10. The filter screen self-switching sewer sewage filter valve according to claim 9, characterized in that: The connecting plate (22) is provided with two fixing holes (23), and the two fixing holes (23) are alternately connected to the fixing pipe (17) and the water outlet pipe (3), respectively. The connecting plate (22) has a rotation range of 0-45 degrees, and limit blocks (24) are fixed to the valve bodies (1) at both ends of the connecting plate (22).

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