A valve with an impurity filtering mechanism and its usage method

Abstract

The present invention discloses a valve with an impurity filtering mechanism and a using method, relating to the technical field of valves. The present invention includes a lower valve body and an upper valve body. The upper valve body is located at the top of the lower valve body and is fixedly connected by screws. A valve rod is threadedly penetrated through the inside of the upper valve body. A turntable is fixedly connected to the top of the valve rod. The bottom of the valve rod extends into the inside of the lower valve body and is fixedly connected to a valve flap. A second water inlet and a water outlet are respectively opened on both sides of the lower valve body. A connection groove is opened inside the lower valve body. By controlling the opening and closing of the valve, the present invention can drive the lifting of a push rod, and further drive the lifting of a plurality of bristles to clean the filter plate, avoiding the blockage of the filter plate, reducing the workload of workers. At the same time, it can also block the first water inlet, facilitating the cleaning of the impurities remaining inside the valve without disassembling the valve, easily removing the impurities, and being convenient for disassembly and installation, facilitating replacement, with simple operation.

Description

Technical Field

[0001] The present invention belongs to the technical field of valves, and particularly relates to a valve with an impurity filtering mechanism and a using method thereof. Background Art

[0002] A valve is a pipeline accessory used to open and close pipelines, control the flow direction, and adjust and control parameters (temperature, pressure, and flow rate) of the transported medium. According to its functions, it can be divided into a shut-off valve, a check valve, a regulating valve, etc. A valve is a control component in a fluid transportation system and has functions such as cutoff, regulation, diversion, prevention of backflow, pressure stabilization, flow splitting, or overflow pressure relief. Valves used in fluid control systems range from the simplest stop valve to various valves used in extremely complex automatic control systems, and their varieties and specifications are quite numerous.

[0003] When existing valves are in use, the following defects still exist:

[0004] 1. Since the valve does not have a device for filtering impurities by itself, the application scenario of the valve is limited. When transporting relatively turbid liquids, it is easy to be blocked.

[0005] 2. Some valves are provided with a filter screen inside for filtering impurities, but the impurities are difficult to clean. It is necessary to disassemble the valve, which is time-consuming and laborious, and the operation is inconvenient. Summary of the Invention

[0006] The purpose of the present invention is to provide a valve with an impurity filtering mechanism and a using method thereof. By driving the lifting of a push rod while controlling the opening and closing of the valve, multiple brush hairs can be driven to lift, thereby cleaning the filter plate, avoiding blockage of the filter plate, reducing the workload of workers, and at the same time, blocking the first water inlet, facilitating the cleaning of residual impurities inside the valve, without the need to disassemble the valve, easily removing the impurities, and the disassembly and installation are also very convenient, facilitating replacement, with simple operation, thus solving the existing technical problems.

[0007] To solve the above technical problems, the present invention is achieved through the following technical solutions:

[0008] A valve with an impurity filtering mechanism and its usage method, comprising: a lower valve body and an upper valve body, the upper valve body is located at the top of the lower valve body and is fixedly connected by screws, a valve stem passes through the interior of the upper valve body in a threaded manner, a turntable is fixedly connected to the top of the valve stem, the bottom of the valve stem extends into the interior of the lower valve body and is fixedly connected to a valve flap, second water inlets and a water outlet are respectively opened on both sides of the lower valve body, a connection groove is opened in the interior of the lower valve body, the connection groove is located between the second water inlets and the water outlet and is used to connect the second water inlets and the water outlet, the connection groove is used in cooperation with the valve flap, an installation groove communicating with the second water inlet is opened at the bottom of the lower valve body, a filtering box is arranged inside the installation groove, a second fixing plate and a first fixing plate are fixedly connected inside the filtering box, a plurality of filter plates are arranged between the first fixing plate and the second fixing plate, and a cleaning component for cleaning the filter plates is arranged above the second fixing plate;

[0009] A collecting component for collecting impurities is arranged on the bottom inner wall of the filtering box;

[0010] A first water inlet is opened on one side of the filtering box, and a sealing component for sealing the first water inlet is arranged on one side of the filtering box.

[0011] Optionally, the cleaning component includes a plurality of first vertical rods slidably penetrating through the second fixing plate, a cross plate is fixedly connected to one side of the first vertical rod, a plurality of brush hairs are fixedly connected to one side of the cross plate, a plurality of sieve holes are opened inside the filter plate, and the plurality of brush hairs are respectively located on both sides of the filter plate and are used in cooperation with the sieve holes.

[0012] Optionally, the tops of the plurality of first vertical rods are fixedly connected to the same sliding plate, a push rod is fixedly connected to the top of the sliding plate, the top of the push rod slidably penetrates through the filtering box and abuts against the bottom of the valve flap, and two symmetrically arranged springs are fixedly connected between the bottom of the sliding plate and the top of the second fixing plate.

[0013] Optionally, the collecting component includes an inclined plate fixedly connected to the bottom inner wall of the filtering box, a sewage discharge port is opened on one side of the lower valve body, a threaded plug is threadedly connected inside the sewage discharge port, a plurality of rectangular openings are opened inside the first fixing plate, a blocking block is fixedly connected to the bottom of the cross plate located below, and the blocking block is used in cooperation with the rectangular openings.

[0014] Optionally, the sealing component includes two symmetrically arranged baffles slidably connected to the inner wall of one side of the filtering box, a same tension spring is fixedly connected between the baffle and the inner wall of one side of the filtering box, the baffle is used in cooperation with the first water inlet, two symmetrically arranged second vertical rods are fixedly connected to the bottom of the sliding plate, the bottom of the second vertical rod slidably penetrates through the second fixing plate and is fixedly connected to a triangular plate, and the triangular plate is used in cooperation with the baffle.

[0015] Optionally, the bottom of the filter box is fixedly connected with a bottom plate, the bottom plate is located at the bottom of the lower valve body, both sides of the lower valve body are threaded through with fixing screws, and threaded grooves for cooperating with the fixing screws are opened at both ends of the bottom plate.

[0016] Optionally, round holes are opened inside both the second fixing plate and the filter box, and the same sleeve is fixedly connected inside the two round holes.

[0017] A method for using a valve with an impurity filtering mechanism specifically includes the following steps:

[0018] S1. When the water inlet is normal, water enters the inside of the lower valve body through the second water inlet, enters the inside of the filter box through the first water inlet, after being filtered by multiple filter plates, enters the inside of the connecting groove through the sleeve, and finally is discharged through the water outlet, and impurities remain inside the first fixing plate;

[0019] S2. When it is necessary to close the valve, rotate the turntable, the turntable drives the valve stem to rotate and move vertically downward, the valve stem drives the valve flap to move vertically downward, the valve flap blocks the connecting groove, and at the same time the valve flap pushes the push rod to move vertically downward, the push rod drives the sliding plate to move vertically downward, the sliding plate drives the second vertical rod to move vertically downward, the second vertical rod drives the triangular plate to move vertically downward, and the triangular plate drives the two baffles to approach each other. At this time, the baffles can block the first water inlet to prevent continuous water inlet, providing double insurance and improving the sealing performance of the device;

[0020] S3. During the downward movement of the sliding plate, it drives a plurality of first vertical rods to move vertically downward and compress the springs. The first vertical rods drive the cross plate to move vertically downward, and the cross plate drives the brush bristles to move vertically downward to brush the filter plates, preventing the filter plates from getting stuck. At the same time, the blocking block blocks the rectangular opening, and no longer allows the water inside the device to enter the bottom of the filter box;

[0021] S4. During reinstallation, the bottom plate is fixedly connected to the bottom of the lower valve body through two fixing screws. When the internal impurities accumulate to a certain extent, the threaded plug can be rotated, and the threaded plug is removed from the inside of the sewage outlet. The blocking of the baffle and the blocking of the rectangular opening can improve the sealing performance of the device, ensuring that only impurities and a small amount of water located below the first fixing plate are discharged, which is convenient to use.

[0022] The embodiments of the present invention have the following beneficial effects:

[0023] By controlling the opening and closing of the control valve, the push rod can be driven to rise and fall, and then multiple bristles can be driven to rise and fall to clean the filter plate, avoid blockage of the filter plate, reduce the workload of workers. At the same time, the first water inlet can be blocked, which is convenient for cleaning the impurities remaining inside the valve. There is no need to disassemble the valve, and the impurities can be easily taken out. At the same time, the disassembly and installation are also very convenient, which is convenient for replacement and has simple operation.

[0024] Of course, it is not necessary for any product implementing the present invention to achieve all the above advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0026] Figure 1 Three-dimensional structure schematic diagram of an embodiment of the present invention;

[0027] Figure 2 Three-dimensional sectional structure schematic diagram of an embodiment of the present invention;

[0028] Figure 3 Three-dimensional sectional structure schematic diagram of removing the filter box in an embodiment of the present invention;

[0029] Figure 4 Three-dimensional sectional structure schematic diagram of the filter box in an embodiment of the present invention;

[0030] Figure 5 Structure schematic diagram of the filter box in an embodiment of the present invention;

[0031] Figure 6 Structure schematic diagram of the second fixing plate and the first fixing plate in an embodiment of the present invention.

[0032] Reference numerals: 1, lower valve body; 2, upper valve body; 3, valve rod; 4, turntable; 5, valve flap; 6, fixing screw; 7, filter box; 8, bottom plate; 9, installation groove; 10, push rod; 11, sliding plate; 12, sleeve; 13, first fixing plate; 14, threaded plug; 15, inclined plate; 16, filter plate; 17, second fixing plate; 18, first water inlet; 19, baffle; 20, tension spring; 21, sewage outlet; 22, round hole; 23, spring; 24, first vertical rod; 25, second vertical rod; 26, triangular plate; 27, cross plate; 28, sieve hole; 29, bristle; 30, blocking block; 31, rectangular opening; 32, second water inlet; 33, connecting groove; 34, water outlet. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] Next, in combination with the accompanying drawings in the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0034] In the description of the present invention, it should be understood that the terms "opening", "upper", "middle", "length", "inner", etc. indicating the orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0035] In order to keep the following description of the embodiments of the present invention clear and concise, the detailed description of known functions and known components is omitted in the present invention.

[0036] Embodiment 1

[0037] Please refer to Figures 1-6 As shown, in this embodiment, a valve with an impurity filtering mechanism and its usage method are provided, including: a lower valve body 1 and an upper valve body 2. The upper valve body 2 is located at the top of the lower valve body 1 and is fixedly connected by screws. A valve rod 3 penetrates through the interior of the upper valve body 2 in a threaded manner. A turntable 4 is fixedly connected to the top of the valve rod 3. The bottom of the valve rod 3 extends into the interior of the lower valve body 1 and is fixedly connected to a valve flap 5. Second water inlets 32 and a water outlet 34 are respectively opened on both sides of the lower valve body 1. A connecting groove 33 is opened inside the lower valve body 1. The connecting groove 33 is located between the second water inlets 32 and the water outlet 34 and is used to connect the second water inlets 32 and the water outlet 34. The connecting groove 33 is used in cooperation with the valve flap 5. An installation groove 9 communicating with the second water inlets 32 is opened at the bottom of the lower valve body 1. A filtering box 7 is arranged inside the installation groove 9. Second fixing plates 17 and a first fixing plate 13 are fixedly connected inside the filtering box 7. A plurality of filter plates 16 are arranged between the first fixing plate 13 and the second fixing plates 17. Above the second fixing plates 17, a cleaning assembly for cleaning the filter plates 16 is provided;

[0038] A collecting assembly for collecting impurities is arranged on the bottom inner wall of the filtering box 7;

[0039] A first water inlet 18 is opened on one side of the filtering box 7. A sealing assembly for sealing the first water inlet 18 is arranged on one side of the filtering box 7.

[0040] In one aspect of this embodiment, as Figures 1-4As shown, the cleaning assembly includes a plurality of first vertical rods 24 that slide through the second fixed plate 17. One side of the first vertical rod 24 is fixedly connected to a cross plate 27. One side of the cross plate 27 is fixedly connected to a plurality of bristles 29. A plurality of sieve holes 28 are formed inside the filter plate 16. The plurality of bristles 29 are respectively located on both sides of the filter plate 16 and are used in cooperation with the sieve holes 28. Optionally, the tops of the plurality of first vertical rods 24 are fixedly connected to the same sliding plate 11. The top of the sliding plate 11 is fixedly connected to a push rod 10. The top of the push rod 10 slides through the filter tank 7 and abuts against the bottom of the valve flap 5. Two symmetrically arranged springs 23 are fixedly connected between the bottom of the sliding plate 11 and the top of the second fixed plate 17. This application is not limited thereto;

[0041] During the downward movement of the sliding plate 11, it drives the plurality of first vertical rods 24 to move vertically downward and compress the springs 23. The first vertical rods 24 drive the cross plate 27 to move vertically downward. The cross plate 27 drives the bristles 29 to move vertically downward and brush the filter plate 16 to prevent the filter plate 16 from getting stuck. At the same time, the blocking block 30 blocks the rectangular opening 31, and no longer allows the water inside the device to enter the bottom of the filter tank 7.

[0042] In one aspect of this embodiment, as Figures 1-3 shown, the collection assembly includes an inclined plate 15 fixedly connected to the inner wall of the bottom of the filter tank 7. A sewage discharge port 21 is formed on one side of the lower valve body 1. A threaded plug 14 is threadedly connected inside the sewage discharge port 21. A plurality of rectangular openings 31 are formed inside the first fixed plate 13. A blocking block 30 is fixedly connected to the bottom of the lower cross plate 27. The blocking block 30 is used in cooperation with the rectangular opening 31;

[0043] During reinstallation, the bottom plate 8 is fixedly connected to the bottom of the lower valve body 1 through two fixing screws 6. When the internal impurities accumulate to a certain extent, the threaded plug 14 can be rotated, and the threaded plug 14 is removed from the inside of the sewage discharge port 21. The sealing of the baffle 19 and the rectangular opening 31 can improve the sealing performance of the device, ensuring that only impurities and a small amount of water located below the first fixed plate 13 are discharged, which is convenient to use.

[0044] In another aspect of this embodiment, as Figures 1-4 shown, the sealing assembly includes two symmetrically arranged baffles 19 slidably connected to the inner wall of one side of the filter tank 7. The same tension spring 20 is fixedly connected between the baffle 19 and the inner wall of one side of the filter tank 7. The baffle 19 is used in cooperation with the first water inlet 18. Two symmetrically arranged second vertical rods 25 are fixedly connected to the bottom of the sliding plate 11. The bottom of the second vertical rod 25 slides through the second fixed plate 17 and is fixedly connected to a triangular plate 26. The triangular plate 26 is used in cooperation with the baffle 19;

[0045] When the valve needs to be closed, rotate the turntable 4. The turntable 4 drives the valve stem 3 to rotate and move vertically downward. The valve stem 3 drives the valve flap 5 to move vertically downward. The valve flap 5 blocks the connecting groove 33. At the same time, the valve flap 5 pushes the push rod 10 to move vertically downward. The push rod 10 drives the sliding plate 11 to move vertically downward. The sliding plate 11 drives the second vertical rod 25 to move vertically downward. The second vertical rod 25 drives the triangular plate 26 to move vertically downward. The triangular plate 26 drives the two baffles 19 to approach each other. At this time, the baffles 19 can block the first water inlet 18 to prevent further water inflow, providing double insurance and improving the sealing performance of the device.

[0046] Embodiment 2

[0047] Improved on the basis of Embodiment 1: Refer to the appendix Figures 5-6 , a bottom plate 8 is fixedly connected to the bottom of the filter box 7. The bottom plate 8 is located at the bottom of the lower valve body 1. Fixing screws 6 are threadedly penetrated through both sides of the lower valve body 1. Threaded grooves for cooperating with the fixing screws 6 are provided at both ends of the bottom plate 8. When the water enters normally, the water enters the interior of the lower valve body 1 through the second water inlet 32, and enters the interior of the filter box 7 through the first water inlet 18. After being filtered by a plurality of filter plates 16, it enters the interior of the connecting groove 33 through the sleeve 12, and finally is discharged through the water outlet 34. The impurities remain inside the first fixing plate 13.

[0048] Embodiment 3

[0049] Improved on the basis of Embodiment 1: Refer to the appendix Figures 1-2 , round holes 22 are provided inside both the second fixing plate 17 and the filter box 7. The same sleeve 12 is fixedly connected inside the two round holes 22.

[0050] A method for using a valve with an impurity filtering mechanism specifically includes the following steps:

[0051] S1. When the water enters normally, the water enters the interior of the lower valve body 1 through the second water inlet 32, and enters the interior of the filter box 7 through the first water inlet 18. After being filtered by a plurality of filter plates 16, it enters the interior of the connecting groove 33 through the sleeve 12, and finally is discharged through the water outlet 34. The impurities remain inside the first fixing plate 13;

[0052] S2. When the valve needs to be closed, rotate the turntable 4. The turntable 4 drives the valve stem 3 to rotate and move vertically downward. The valve stem 3 drives the valve flap 5 to move vertically downward. The valve flap 5 blocks the connecting groove 33. At the same time, the valve flap 5 pushes the push rod 10 to move vertically downward. The push rod 10 drives the sliding plate 11 to move vertically downward. The sliding plate 11 drives the second vertical rod 25 to move vertically downward. The second vertical rod 25 drives the triangular plate 26 to move vertically downward. The triangular plate 26 drives the two baffles 19 to approach each other. At this time, the baffles 19 can block the first water inlet 18 to avoid continuous water inflow, providing double insurance and improving the sealing performance of the device.

[0053] S3. During the downward movement of the sliding plate 11, it drives a plurality of first vertical rods 24 to move vertically downward and compress the springs 23. The first vertical rods 24 drive the cross plate 27 to move vertically downward. The cross plate 27 drives the brush hairs 29 to move vertically downward to brush the filter plate 16, preventing the filter plate 16 from getting stuck. At the same time, the blocking block 30 blocks the rectangular opening 31, and no longer allows the water inside the device to enter the bottom of the filter tank 7.

[0054] S4. During reinstallation, fix the bottom plate 8 to the bottom of the lower valve body 1 through two fixing screws 6. When the internal impurities accumulate to a certain extent, the threaded plug 14 can be rotated and removed from the inside of the sewage outlet 21. The blocking of the baffle 19 and the blocking of the rectangular opening 31 can improve the sealing performance of the device, ensuring that only impurities and a small amount of water located below the first fixing plate 13 are discharged, which is convenient to use.

[0055] It should be noted that in the description of this specification, descriptions such as "first", "second", etc. are only used to distinguish each feature, and do not have an actual order or directional meaning. This application is not limited thereto.

[0056] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0057] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not elaborate on all the details, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the relevant technical fields can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A valve with an impurity filtering mechanism, characterized in that, Including: A lower valve body (1) and an upper valve body (2), the upper valve body (2) is located at the top of the lower valve body (1) and is fixedly connected by screws. A valve stem (3) passes through the internal thread of the upper valve body (2). The top of the valve stem (3) is fixedly connected with a turntable (4). The bottom of the valve stem (3) extends into the internal part of the lower valve body (1) and is fixedly connected with a valve flap (5). Second water inlets (32) and a water outlet (34) are respectively formed on both sides of the lower valve body (1). A connecting groove (33) is formed inside the lower valve body (1). The connecting groove (33) is located between the second water inlets (32) and the water outlet (34) and is used to connect the second water inlets (32) and the water outlet (34). The connecting groove (33) is used in cooperation with the valve flap (5). An installation groove (9) communicating with the second water inlets (32) is formed at the bottom of the lower valve body (1). A filter box (7) is arranged inside the installation groove (9). A second fixing plate (17) and a first fixing plate (13) are fixedly connected inside the filter box (7). A plurality of filter plates (16) are arranged between the first fixing plate (13) and the second fixing plate (17). A cleaning assembly for cleaning the filter plates (16) is arranged above the second fixing plate (17); A collecting assembly for collecting impurities is arranged on the bottom inner wall of the filter box (7); A first water inlet (18) is formed on one side of the filter box (7). A sealing assembly for sealing the first water inlet (18) is arranged on one side of the filter box (7); The cleaning assembly includes a plurality of first vertical rods (24) slidably penetrating through the second fixing plate (17). A cross plate (27) is fixedly connected to one side of the first vertical rods (24). A plurality of bristles (29) are fixedly connected to one side of the cross plate (27). A plurality of sieve holes (28) are formed inside the filter plates (16). The plurality of bristles (29) are respectively located on both sides of the filter plates (16) and are used in cooperation with the sieve holes (28); The tops of the plurality of first vertical rods (24) are fixedly connected to the same sliding plate (11). A push rod (10) is fixedly connected to the top of the sliding plate (11). The top of the push rod (10) slidably penetrates through the filter box (7) and abuts against the bottom of the valve flap (5). Symmetrically arranged two springs (23) are fixedly connected between the bottom of the sliding plate (11) and the top of the second fixing plate (17).

2. The valve with an impurity filtering mechanism as claimed in claim 1, wherein, The collecting assembly includes an inclined plate (15) fixedly connected to the bottom inner wall of the filter box (7). A sewage outlet (21) is formed on one side of the lower valve body (1). A threaded plug (14) is threadedly connected inside the sewage outlet (21). A plurality of rectangular openings (31) are formed inside the first fixing plate (13). A blocking block (30) is fixedly connected to the bottom of the lower cross plate (27). The blocking block (30) is used in cooperation with the rectangular openings (31).

3. The valve with an impurity filtering mechanism according to claim 2, characterized in that, The sealing assembly includes two symmetrically arranged baffles (19) slidably connected to the inner wall of one side of the filter box (7). A same tension spring (20) is fixedly connected between the baffle (19) and the inner wall of one side of the filter box (7). The baffle (19) is used in cooperation with the first water inlet (18). The bottom of the sliding plate (11) is fixedly connected with two symmetrically arranged second vertical rods (25). The bottom of the second vertical rod (25) slidably penetrates through the second fixing plate (17) and is fixedly connected with a triangular plate (26). The triangular plate (26) is used in cooperation with the baffle (19).

4. The valve with an impurity filtering mechanism according to claim 3, characterized in that, The bottom of the filter box (7) is fixedly connected with a bottom plate (8). The bottom plate (8) is located at the bottom of the lower valve body (1). Fixing screws (6) are threadedly penetrated through both sides of the lower valve body (1). Thread grooves for cooperating with the fixing screws (6) are formed at both ends of the bottom plate (8).

5. The valve with an impurity filtering mechanism according to claim 4, wherein Round holes (22) are formed inside both the second fixing plate (17) and the filter box (7). A same sleeve (12) is fixedly connected inside the two round holes (22).

6. The usage method of a valve with an impurity filtering mechanism as described in claim 5, characterized in that, Specifically, it includes the following steps: S1. When normal water inlet occurs, water enters the inside of the lower valve body (1) through the second water inlet (32), enters the inside of the filter box (7) through the first water inlet (18), after being filtered by multiple filter plates (16), enters the inside of the connecting groove (33) through the sleeve (12), and is finally discharged through the water outlet (34). The impurities remain inside the first fixing plate (13). S2. When it is necessary to close the valve, rotate the turntable (4). The turntable (4) drives the valve stem (3) to rotate and move vertically downward. The valve stem (3) drives the valve flap (5) to move vertically downward. The valve flap (5) blocks the connecting groove (33). At the same time, the valve flap (5) pushes the push rod (10) to move vertically downward. The push rod (10) drives the sliding plate (11) to move vertically downward. The sliding plate (11) drives the second vertical rod (25) to move vertically downward. The second vertical rod (25) drives the triangular plate (26) to move vertically downward. The triangular plate (26) drives the two baffles (19) to approach each other. At this time, the baffle (19) can block the first water inlet (18) to avoid continuous water inlet, providing double insurance and improving the sealing performance of the device. S3. During the downward movement of the sliding plate (11), it drives multiple first vertical rods (24) to move vertically downward and compress the spring (23). The first vertical rod (24) drives the cross plate (27) to move vertically downward. The cross plate (27) drives the brush bristles (29) to move vertically downward and brush the filter plate (16) to prevent the filter plate (16) from getting stuck. At the same time, the blocking block (30) blocks the rectangular opening (31) to prevent the water inside the device from entering the bottom of the filter box (7). S4. During installation, the bottom plate (8) is fixedly connected to the bottom of the lower valve body (1) by two fixing screws (6). When the internal impurities accumulate to a certain extent, the threaded plug (14) can be rotated, and the threaded plug (14) is removed from the inside of the sewage outlet (21). The sealing of the baffle (19) and the rectangular opening (31) can improve the sealing performance of the device, ensuring that only impurities and a small amount of water located below the first fixing plate (13) are discharged, which is convenient to use.

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