An electric water valve

Abstract

The present application discloses an electric water valve, belonging to the technical field of fluid control. It includes a valve body, a sealing plate, and a gate plate. The sealing plate slides horizontally on the inner wall at the sealing port inside the valve body. A limiting block slides inside the valve body. A limiting groove for the insertion of the limiting block is provided on the sealing plate. An inclined surface is provided at one end of the limiting block close to the sealing plate, and the limiting block is in sliding fit with the sealing plate through the inclined surface. A sealing groove for the insertion of the sealing plate is provided on the gate plate. A plurality of first springs are provided inside the inner wall at the sealing port inside the valve body, and both ends of the first springs are fixedly arranged on the sealing plate and the inner wall of the valve body respectively. A first driving assembly for driving the movement of the limiting block and a resetting assembly for resetting the limiting block are provided inside the valve body, and a second driving assembly for driving the movement of the sealing plate is provided on the gate plate. The present application has the effect of reducing the friction between the gate plate and the sealing plate when the gate plate descends, thereby reducing the wear on the surfaces of the sealing plate and the gate plate, and further improving the overall sealing performance of the valve.

Description

Technical Field

[0001] The present application relates to the technical field of fluid control, and particularly to an electric water valve. Background Art

[0002] With the development of industrial automation and smart home, as an automatic control component, the electric water valve has been widely used in fields such as water supply systems, heating, ventilation and air conditioning, and irrigation systems. The electric water valve includes an electric gate valve, an electric ball valve, an electric butterfly valve, etc. Among them, due to its simple structure, convenient operation, and easy automatic control, the electric gate valve has been widely used in various industrial and civil occasions.

[0003] In the prior art, the electric gate valve includes a valve body, a gate plate, an electric device, and a transmission mechanism. Sealing plates are provided at both ends of the sealing port in the valve body. The opposite sides of the gate plate slide on the surfaces of the two sealing plates respectively. A valve stem is provided on the gate plate, and the valve stem moves up and down under the action of the electric device and the transmission mechanism. The up and down movement of the valve stem drives the up and down movement of the gate plate, thereby realizing the closing and opening of the valve.

[0004] However, when the gate plate descends to close, when the gate plate descends, the side wall of the gate plate will contact the surface of the sealing plate, thereby generating friction. However, long-term friction will cause wear on both the sealing plate and the surface of the gate plate, thereby affecting the overall sealing performance. Summary of the Invention

[0005] In order to reduce the friction between the gate plate and the sealing plate when the gate plate descends, thereby reducing the wear on the sealing plate and the surface of the gate plate, and further improving the overall sealing performance of the valve, the present application provides an electric water valve.

[0006] The electric water valve provided by the present application adopts the following technical solutions:

[0007] An electric water valve includes a valve body, a sealing plate, and a gate plate. The sealing plate horizontally slides on the inner wall of the sealing port in the valve body. A limiting block slides in the valve body. A limiting groove for inserting the limiting block is provided on the sealing plate. An inclined surface is provided at one end of the limiting block close to the sealing plate, and the limiting block is slidably matched with the sealing plate through the inclined surface; a sealing groove for inserting the sealing plate is provided on the gate plate; a plurality of first springs are provided in the inner wall of the sealing port in the valve body, and both ends of the first spring are fixedly provided on the sealing plate and the inner wall of the valve body respectively; a first driving component for driving the movement of the limiting block and a resetting component for resetting the limiting block are provided in the valve body, and a second driving component for driving the movement of the sealing plate is provided on the gate plate.

[0008] By adopting the above technical solution, when the staff drives the gate plate to move downward and before the gate plate is closed, at this time, the sealing plate is located inside the inner wall of the valve body sealing port, the first spring is in a compressed state, and the limiting block is inserted into the limiting groove on the sealing plate; when the gate plate moves downward to close the valve, the gate plate does not contact the sealing plate during the movement. Subsequently, when the gate plate moves downward to the bottom end of the sealing port in the valve body, the gate plate can trigger the first driving component, and the first driving component can drive the limiting block to move to a position away from the sealing plate. When the sealing groove on the gate plate corresponds to the sealing plate, the elastic force of the first spring can push the sealing plate to be inserted into the sealing groove, so as to seal the entire valve. At the same time, the limiting block can move to the initial position under the action of the reset component; when it is necessary to raise the gate plate to open it, the sealing plate can be first pushed outward from the gate plate by the second driving component until the sealing plate moves inside the inner wall of the valve body sealing port. During this period, the sealing plate contacts the limiting block and pushes the limiting block to move through the inclined surface on the limiting block. When the sealing plate moves to the position where the limiting groove corresponds to the limiting block, the limiting block can be inserted into the limiting groove on the sealing plate under the action of the reset component, so as to limit the sealing plate again, and then facilitate the rising and opening of the gate plate; the whole process reduces the friction between the gate plate and the sealing plate when the gate plate descends, thereby reducing the wear on the surfaces of the sealing plate and the gate plate, and further improving the overall sealing performance of the valve.

[0009] Preferably, the first driving component includes a scraping plate and a first pushing block. The scraping plate is fixedly arranged on the gate plate. The first pushing block slides horizontally on the limiting block, and the scraping plate abuts against the first pushing block; the scraping plate is slidably connected to the surface of the sealing plate.

[0010] By adopting the above technical solution, the arranged scraping plate can first scrape off the impurities on the surface of the sealing plate during the rising and falling processes, so as to improve the sealing performance between the sealing plate and the gate plate; at the same time, when the gate plate descends to the bottom end of the sealing port in the valve body, the scraping plate can contact the first pushing block and push the first pushing block to move downward. The first pushing block can drive the limiting block to move to a position away from the sealing plate, thereby reducing the difficulty of moving the limiting block.

[0011] Preferably, the reset component includes a second spring and a third spring. The two ends of the second spring are respectively fixedly arranged on the limiting block and the inner wall of the valve body; the two ends of the third spring are respectively fixedly arranged on the limiting block and the first pushing block. An abutting block is fixedly arranged on the first pushing block. A second pushing block is fixedly arranged on the inner wall of the valve body. The second pushing block is provided with an inclined surface, and the second pushing block is slidably matched with the abutting block through the inclined surface; the first pushing block is provided with an inclined surface at one end close to the scraping plate, and the first pushing block is slidably matched with the scraping plate through the inclined surface.

[0012] By adopting the above technical solution, after the limiting block moves to a position away from the sealing plate, the scraper continues to push the first push block downward, the second spring is continuously compressed, the abutting block on the first push block can contact the second push block, and the second push block can push the abutting block and the first push block to move away from the scraper through the inclined surface, and the third spring is compressed. When the first push block moves to a position away from the scraper, at this time, the first push block is located above the scraper, and the third spring can push the first push block to move to a position directly above the scraper. At the same time, the elastic force of the second spring can push the limiting block to move upward to the initial position. Subsequently, when the gate rises and opens, the scraper can rise to push the first push block to move through the inclined surface on the first push block, and the third spring is compressed. When the scraper rises and moves to a position away from the first push block, the elastic force of the third spring can push the first push block to move to the initial position, thereby reducing the difficulty of the gate and the scraper moving upward.

[0013] Preferably, a first pressure relief hole is provided in the side wall of the valve body at the upstream part of the gate, a dredging pipe is provided on the valve body, one end of the dredging pipe communicates with the first pressure relief hole, and the other end of the dredging pipe communicates with the inner cavity of the valve body at the downstream part of the gate; a sealing plug is slidably arranged in the first pressure relief hole, and a third driving assembly for driving the sealing plug to move is arranged in the valve body.

[0014] By adopting the above technical solution, when the gate is quickly opened and closed, the fluid velocity in the pipeline will suddenly change, thereby generating a pressure wave and producing a "water hammer" effect, resulting in a local pressure increase, thereby increasing the impact of the fluid on the gate; therefore, when the gate is opened and closed and is in a static state, the sealing plug is inserted into the first pressure relief hole, and the pressure relief hole is sealed; when the gate is opened and closed, the gate can trigger the third driving assembly, and the third driving assembly can drive the sealing plug to move, thereby opening the first pressure relief hole. At this time, a part of the fluid upstream of the gate can flow through the dredging pipe to the downstream of the gate, indirectly increasing the fluid flow area and balancing the pressure upstream and downstream of the gate; providing a decompression channel for the fluid, reducing the "water hammer" effect, and further reducing the impact of the fluid on the valve components; after the opening and closing actions of the gate are completed, the third driving assembly can drive the sealing plug to be inserted into the first pressure relief hole again to seal the first pressure relief hole.

[0015] Preferably, the third driving assembly includes a rack and two first gears, and the rack is fixedly arranged on the gate;

[0016] The two first gears are respectively rotatably arranged on the upper and lower inner walls at the sealing port in the valve body; both of the two first gears are engaged with the rack;

[0017] A rotating plate is rotatably arranged inside the valve body. A driving block is fixedly arranged on the side wall of the rotating plate, and a push rod is fixedly arranged on the side wall of the sealing plug. The driving block abuts against the push rod. A roller one is fixedly arranged at the central axis of the rotating plate, and a roller two is fixedly arranged on each of the two gear ones. A belt is arranged between the roller one and the roller two, and the belt is driven by the roller one and the roller two.

[0018] By adopting the above technical solution, before the gate plate descends to close or ascends to open, the driving block on the rotating plate abuts against the push rod, the sealing plug is inserted into the first pressure relief hole, and the first pressure relief hole is in a sealed state; when the gate plate descends to close or ascends to open, the gate plate will drive the driving rod and the two racks to move together;

[0019] When the gate plate descends, the rack first pushes the gear one located at the top of the sealing port inside the valve body to rotate. The gear one drives the roller two to rotate. The roller two drives the roller one to rotate through the belt. The roller one drives the rotating plate to rotate. The rotating plate drives the driving block to move downward. At this time, the sealing plug can move downward under the action of its own gravity and the gravity of the fluid inside the valve body, so as to open the first pressure relief hole, and the fluid can flow out from the first pressure relief hole;

[0020] When the gate plate gradually moves to the bottom of the sealing port inside the valve body, at this time the rack can gradually drive the gear one located at the bottom of the sealing port inside the valve body to rotate. At this time, the gear one can continue to drive the rotating plate to rotate. The rotating plate drives the driving block to move upward. The driving block can push the push rod and the sealing plug to move upward until the sealing plug is inserted into the first pressure relief hole again to seal the first pressure relief hole; by the same principle, when the gate plate ascends to open, it can drive the sealing plug to descend to open. When the gate plate gradually moves to the top of the sealing port inside the valve body, it can gradually drive the sealing plug to ascend to close. During the whole process, the first pressure relief hole is opened while the gate plate ascends to open and descends to close, reducing the difficulty of the movement of the sealing plug.

[0021] Preferably, a buffer plate and a buffer spring are arranged at the bottom end of the sealing port inside the valve body. The buffer plate slides inside the valve body. The scraping plate abuts against the buffer plate. Two ends of the buffer spring are respectively fixedly arranged on the buffer plate and the inner wall of the valve body.

[0022] By adopting the above technical solution, when the gate plate moves downward to close, the scraping plate first contacts the buffer plate. Then the gate plate continues to move downward. The buffer plate can compress the buffer spring and move downward. The elastic force of the arranged buffer spring can push the buffer plate to buffer the scraping plate and the gate plate, which can absorb part of the kinetic energy, reduce the impact force when the gate plate contacts the bottom, protect the gate plate and the gate plate groove from being damaged, and extend the service life of the gate plate and related mechanical components; at the same time, it also reduces the noise generated when the gate plate closes and improves the comfort of the working environment.

[0023] Preferably, a first baffle slides inside the dredging pipe, and a first connecting rod slides inside the valve body. Two ends of the first connecting rod are respectively and fixedly arranged on the buffer plate and the first baffle.

[0024] By adopting the above technical solution, before the gate plate descends and closes, the dredging pipe is in an open state. When the gate plate descends and closes, the scraper pushes the buffer plate to move downward. The buffer plate can drive the first connecting rod and the first baffle to move downward at the same time. The first baffle gradually inserts into the inner cavity of the dredging pipe. When the gate plate stops moving and closes the valve body, at this time, the first baffle is completely inserted into the dredging pipe, so that the dredging pipe can be sealed, thereby improving the sealing performance of the dredging pipe, and further improving the overall sealing performance of the valve.

[0025] Preferably, a filtering mechanism is arranged at the inlet of the valve body. The filtering mechanism includes a filtering box. Through holes are respectively formed in opposite sides of the filtering box. A flexible pipe is arranged inside the filtering box. Two ends of the flexible pipe are respectively communicated with the two through holes. The two through holes are respectively communicated with the inlet end of the valve body and the pipeline; a filter plate is installed at the through hole on the side of the filtering box close to the valve body. A cleaning plate is rotatably arranged inside the filtering box. The cleaning plate slides on the surface of the filter plate. A fourth driving component for driving the cleaning plate to rotate is arranged inside the filtering box.

[0026] By adopting the above technical solution, the arranged filtering mechanism can filter solid particle impurities in the fluid, thereby reducing the abrasion caused by solid particle impurities to the sealing plate, the gate plate or other components inside the valve body; when the solid particle impurities in the pipeline are too many and cause the filter plate to be blocked, the fluid pressure in the pipeline increases. At this time, the volume of the flexible pipe expands. At this time, the fourth driving component can be triggered to drive the cleaning plate to rotate, and the cleaning plate can clean the impurities on the surface of the filter plate, reducing the possibility of the sealing plate being blocked.

[0027] Preferably, the fourth driving component includes an annular gear, a third gear and a fourth spring. The annular gear and the third gear are both rotatably arranged on the inner wall of the filtering box. The filter plate is located in the central through hole of the annular gear. One end of the cleaning plate is fixedly arranged on the inner wall of the annular gear. The annular gear meshes with the third gear;

[0028] A driving plate slides inside the filtering box. The driving plate abuts against the outer side wall of the flexible pipe. A driving rod slides horizontally inside the filtering box. A top block is fixedly arranged on the driving plate. An inclined surface is arranged on the top block. The top block is in sliding fit with the driving plate through the inclined surface. A threaded rod is fixedly arranged on the driving plate. The threaded rod is in threaded fit with the third gear;

[0029] Two ends of the fourth spring are respectively fixedly arranged on the inner wall of the filtering box and the driving rod.

[0030] By adopting the above technical solution, the volume expansion of the hose can push the driving plate to move, the driving plate drives the top block to move, the top block can contact the driving rod, the top block gradually pushes the driving rod to move through the inclined surface, the driving rod drives the threaded rod to move, the threaded rod drives the third gear to rotate, and the third gear drives the ring gear to rotate; when the pressure in the pipeline decreases, the hose shrinks, and the elastic force of the fourth spring can push the driving rod and the threaded rod to move to the initial position, and the ring gear rotates in the reverse direction. Therefore, the driving rod drives the threaded rod to move reciprocally, so as to drive the ring gear to rotate reciprocally to drive the cleaning plate to rotate reciprocally, thereby reducing the difficulty of the cleaning plate rotating.

[0031] Preferably, a second pressure relief hole is provided in the inner wall of one side of the filter box upstream of the filter plate, a pressure relief pipe is communicated with the second pressure relief hole, a second baffle is slidably arranged at the second pressure relief hole, a second connecting rod is fixedly arranged on the driving rod, and one end of the second connecting rod is fixedly arranged on the second baffle.

[0032] By adopting the above technical solution, when the fluid in the pipeline flows normally, the second baffle is inserted into the pressure relief pipe and the pressure relief pipe is blocked; when the fluid in the pipeline continues to increase in pressure due to the blockage of the filter plate or other reasons, at this time, the hose continues to expand to push the driving plate to move. When the hose gradually expands to the limit position, the driving plate can gradually pull the second connecting rod to move; the second connecting rod pulls the second baffle to move, and the pressure relief pipe channel is gradually opened, and part of the fluid in the pipeline can flow out from the second pressure relief hole, so as to reduce the fluid pressure in the pipeline, and further reduce the damage caused by excessive water pressure to the pipeline or the components on the pipeline; when the fluid pressure in the pipeline decreases, the hose shrinks, and the elastic force of the fourth spring can push the driving rod to move to the initial position, and the driving rod drives the second baffle to move to the initial position, thereby sealing the pressure relief pipe again.

[0033] In summary, the present application includes at least one of the following beneficial technical effects:

[0034] Before the staff drives the gate plate to move downward and closes the gate plate, at this time, the sealing plate is located inside the inner wall of the valve body sealing port, the first spring is in a compressed state, and the limit block is inserted into the limit groove on the sealing plate; when the gate plate moves downward to close the valve, the gate plate does not contact the sealing plate during the movement, and then when the gate plate moves downward to the bottom end of the sealing port in the valve body, the gate plate can trigger the first driving component, and the first driving component can drive the limit block to move to a position away from the sealing plate. When the sealing groove on the gate plate corresponds to the sealing plate, the elastic force of the first spring can push the sealing plate to be inserted into the sealing groove, so as to seal the entire valve, and at the same time, the limit block can move to the initial position under the action of the reset component; when it is necessary to raise and open the gate plate, the second driving component can be used to first push the sealing plate to move outward from the gate plate until the sealing plate moves to the inner wall of the valve body sealing port. During this period, the sealing plate contacts the limit block and pushes the limit block to move through the inclined surface on the limit block. When the sealing plate moves to the position where the limit groove corresponds to the limit block, the limit block can be inserted into the limit groove on the sealing plate under the action of the reset component, so as to limit the sealing plate again, and then it is convenient for the gate plate to rise and open; the friction between the gate plate and the sealing plate is reduced during the rising and opening process of the gate plate, thereby improving the overall sealing performance of the valve; the set scraper can first scrape off the impurities on the surface of the sealing plate during the rising and falling processes, so as to improve the sealing performance between the sealing plate and the gate plate; at the same time, when the gate plate descends to the bottom end of the sealing port in the valve body, the scraper can contact the first push block and push the first push block to move downward, and the first push block can drive the limit block to move to a position away from the sealing plate, thereby reducing the difficulty of moving the limit block; after the limit block moves to a position away from the sealing plate, the scraper continues to push the first push block to move downward, the second spring is always compressed, the abutting block on the first push block can contact the second push block, and the second push block can push the abutting block and the first push block to move away from the scraper through the inclined surface, and the third spring is compressed. When the first push block moves to a position away from the scraper, at this time, the first push block is located above the scraper, and the third spring can push the first push block to move to directly above the scraper. At the same time, the elastic force of the second spring can push the limit block to move upward to the initial position. Subsequently, when the gate plate rises and opens, the rising scraper can push the first push block to move through the inclined surface on the first push block, and the third spring is compressed. When the scraper rises and moves to a position away from the first push block, the elastic force of the third spring can push the first push block to move to the initial position, thereby reducing the difficulty of moving the gate plate and the scraper upward. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is the overall structural schematic diagram of the embodiment of the present application;

[0036] Figure 2 is the structural schematic diagram highlighting the gate plate in the embodiment of the present application;

[0037] Figure 3 is Figure 2 the enlarged view of part A in;

[0038] Figure 4 is a structural schematic diagram highlighting the sealing plate in an embodiment of the present application;

[0039] Figure 5 is a structural schematic diagram highlighting the transfer plate in an embodiment of the present application;

[0040] Figure 6 is a schematic diagram of the structure of the hose highlighted in the embodiment of the present application;

[0041] Figure 7 It is a structural schematic diagram highlighting the filter plate in the embodiment of the present application.

[0042] Description of reference numerals:

[0043] 1. Valve body; 2. Sealing plate; 3. Gate plate; 4. Limit block; 5. Guide rod 1; 7. Sealing groove; 8. Spring 1; 9. First drive assembly; 91. Scraper; 92. Push block 1; 93. Guide rod 2; 10. Reset assembly; 101. Spring 2; 102. Spring 3; 103. Abutment block; 104. Push block 2; 11. Second drive assembly; 111. Push plate; 112. Cylinder; 113. Connecting rod; 12. Pressure relief hole 1; 13. Dredge pipe; 14. Sealing plug; 15. Guide rod 3; 16. Third drive assembly; 17. Belt; 18. Gear 1; 19. Rack; 20. Turn plate; 21. Drive block; 22. Push rod; 23 , roller one; 24, roller two; 25, buffer plate; 26, buffer spring; 27, baffle one; 28, connecting rod one; 29, filtering mechanism; 291, filter box; 292, through hole; 293, hose; 294, filter plate; 295, cleaning plate; 296, fourth drive assembly; 2961, ring gear; 2962, gear three; 2963, drive plate; 2964, telescopic rod; 2965, reset spring; 2966, drive rod; 2967, guide rod four; 2968, top block; 2969, threaded rod; 2970, spring four; 30, pressure relief hole two; 31, pressure relief pipe; 32, baffle two; 33, connecting rod two. DETAILED DESCRIPTION

[0044] The following is combined with Figure 1-7 This application is described in further detail.

[0045] The present application embodiment discloses an electric water valve, such as Figure 1 , Figure 2 and Figure 3 As shown, it includes a valve body 1, a sealing plate 2 and a gate plate 3. The sealing plate 2 slides horizontally on the inner wall at the sealing port of the valve body 1. The inner wall of the valve body 1 below the sealing plate 2 slides vertically with a limiting block 4. The inner wall of the valve body 1 below the sealing plate 2 is vertically provided with two guide rods 5, and the bottom end of the guide rod 5 is fixedly provided on the inner wall of the valve body 1.

[0046] As Figure 1 、 Figure 2 and Figure 3 shown, the limit block 4 vertically slides on the first guide rod 5. A limit groove for inserting the limit block 4 is formed at the bottom of the sealing plate 2. An inclined surface is provided on one side of the top end of the limit block 4 close to the gate plate 3. The limit block 4 is slidably engaged with the sealing plate 2 through the inclined surface. A sealing groove 7 for inserting the sealing plate 2 is formed on the side wall of the gate plate 3. The sealing groove 7 extends in the horizontal direction. A plurality of first springs 8 are provided inside the inner wall at the sealing port in the valve body 1. The first springs 8 are horizontally arranged, and both ends of the first springs 8 are fixedly provided on the sealing plate 2 and the inner wall of the valve body 1 respectively. A first driving assembly 9 for driving the limit block 4 to move and a reset assembly 10 for resetting the limit block 4 are provided in the valve body 1.

[0047] As Figure 2 and Figure 4 shown, a second driving assembly 11 for driving the sealing plate 2 to move is provided on the gate plate 3. The second driving assembly 11 includes a push plate 111, a cylinder 112 and a connecting rod 113. The push plate 111 horizontally slides in the sealing groove 7, and the push plate 111 abuts against the sealing plate 2. The cylinder 112 is arranged on the top of the gate plate 3. Both ends of the connecting rod 113 are fixedly provided on the piston rod of the cylinder 112 and the push plate 111 respectively.

[0048] As Figure 1 、 Figure 2 、 Figure 3 and Figure 4 shown, before the staff drives the gate plate 3 to move downward to close the gate plate 3, at this time the sealing plate 2 is located inside the inner wall at the sealing port of the valve body 1, the first spring 8 is in a compressed state, and the limit block 4 is inserted into the limit groove on the sealing plate 2. When the gate plate 3 moves downward to close the valve, the gate plate 3 does not contact the sealing plate 2 during the movement. Subsequently, when the gate plate 3 moves downward to the bottom end of the sealing port in the valve body 1, the gate plate 3 can trigger the first driving assembly 9, and the first driving assembly 9 can drive the limit block 4 to move to a position away from the sealing plate 2. When the sealing groove 7 on the gate plate 3 corresponds to the sealing plate 2, the elastic force of the first spring 8 can push the sealing plate 2 to be inserted into the sealing groove 7, so as to seal the entire valve, and at the same time the limit block 4 can move to the initial position under the action of the reset assembly 10.

[0049] As Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown in the figure, when it is necessary to raise and open the gate plate 3, the cylinder 112 can be opened. The cylinder 112 can push the connecting rod 113 and the push plate 111 to move outward of the gate plate 3. The push plate 111 can push the sealing plate 2 out of the outside of the gate plate 3 until the sealing plate 2 moves into the inner wall at the sealing port of the valve body 1. During this period, the sealing plate 2 contacts the limit block 4 and pushes the limit block 4 to move through the inclined surface on the limit block 4. When the sealing plate 2 moves to the position corresponding to the limit groove and the limit block 4, the limit block 4 can be inserted into the limit groove on the sealing plate 2 under the action of the reset assembly 10, so as to limit the sealing plate 2 again, and then facilitate the raising and opening of the gate plate 3; the friction between the gate plate 3 and the sealing plate 2 is reduced during the rising and opening processes of the gate plate 3, thereby improving the overall sealing performance of the valve.

[0050] As Figure 2 and Figure 3 shown in the figure, the first driving assembly 9 includes a scraping plate 91 and a first pushing block 92. The scraping plate 91 is fixedly arranged at the bottom end of the side wall of the gate plate 3. The first pushing block 92 slides horizontally on the side of the limit block 4 close to the gate plate 3. There are two second guide rods 93 arranged on the side of the limit block 4 close to the gate plate 3. The two second guide rods 93 are horizontally arranged on the opposite sides of the pushing block respectively. One end of the second guide rod 93 is fixedly arranged on the limit block 4. The pushing block slides horizontally on the second guide rod 93. The scraping plate 91 abuts against the top of the first pushing block 92; the scraping plate 91 is vertically slidably connected to the surface of the sealing plate 2.

[0051] As Figure 2 and Figure 3 shown in the figure, the arranged scraping plate 91 can scrape off the impurities on the surface of the sealing plate 2 during the rising and falling processes, so as to improve the sealing performance between the sealing plate 2 and the gate plate 3; at the same time, when the gate plate 3 descends to the bottom end at the sealing port in the valve body 1, the scraping plate 91 can contact the first pushing block 92 and push the first pushing block 92 to move downward. The first pushing block 92 can drive the limit block 4 to move away from the sealing plate 2, thereby reducing the difficulty of moving the limit block 4.

[0052] As Figure 2 and Figure 3As shown in the figure, the reset assembly 10 includes a second spring 101 and a third spring 102. There are two second springs 101, both of which are vertically arranged. The two second springs 101 are respectively sleeved on two first guide rods 5. The two ends of the second spring 101 are respectively fixedly arranged on the limiting block 4 and the inner wall of the valve body 1. There are two third springs 102, both of which are horizontally arranged. The two third springs 102 are respectively sleeved on two second guide rods 93. The two ends of the third spring 102 are respectively fixedly arranged on the limiting block 4 and the first push block 92. A contact block 103 is fixedly arranged at the bottom of the first push block 92. On the inner wall of the valve body 1 at the position below the contact block 103 at the sealing port of the valve body 1, a second push block 104 is fixedly arranged. The top end of the second push block 104 is provided with an inclined surface. The second push block 104 is slidably matched with the contact block 103 through the inclined surface. One end of the first push block 92 close to the scraping plate 91 is provided with an inclined surface. The first push block 92 is slidably matched with the scraping plate 91 through the inclined surface.

[0053] As Figure 2 and Figure 3 shown in the figure, when the limiting block 4 moves to a position away from the sealing plate 2, the scraping plate 91 continues to push the first push block 92 downward. The second spring 101 is always compressed. The contact block 103 on the first push block 92 can contact the second push block 104. The second push block 104 can push the contact block 103 and the first push block 92 to move away from the scraping plate 91 through the inclined surface. The third spring 102 is compressed. When the first push block 92 moves to a position away from the scraping plate 91, at this time, the first push block 92 is located above the scraping plate 91. The third spring 102 can push the first push block 92 to move to a position directly above the scraping plate 91. At the same time, the elastic force of the second spring 101 can push the limiting block 4 to move upward to the initial position. Subsequently, when the gate 3 rises and opens, the scraping plate 91 can rise and push the first push block 92 to move through the inclined surface on the first push block 92. The third spring 102 is compressed. When the scraping plate 91 rises and moves away from the first push block 92, the elastic force of the third spring 102 can push the first push block 92 to move to the initial position, thereby reducing the difficulty of the gate 3 and the scraping plate 91 moving upward.

[0054] As Figure 2 , Figure 3 and Figure 5 shown in the figure, a first pressure relief hole 12 is opened on the bottom side wall of the upstream part of the gate 3 in the valve body 1. A dredging pipe 13 is arranged at the bottom of the valve body 1. One end of the dredging pipe 13 is communicated with the first pressure relief hole 12, and the other end of the dredging pipe 13 is communicated with the inner cavity of the downstream part of the gate 3 in the valve body 1. A sealing plug 14 is vertically slidably arranged in the first pressure relief hole 12. A plurality of third guide rods 15 are vertically and fixedly arranged on the inner wall of the dredging pipe 13. The sealing plug 14 is vertically slidably arranged on the third guide rods 15. A third driving assembly 16 for driving the sealing plug 14 to move is arranged in the valve body 1.

[0055] As Figure 2 , Figure 3 and Figure 5As shown in the figure, when the gate plate 3 is opened and closed quickly, the fluid velocity in the pipeline will change suddenly, generating a pressure wave and causing a "water hammer" effect, resulting in a local pressure increase, thereby increasing the impact of the fluid on the gate plate 3. Therefore, before the gate plate 3 is opened and closed and when it is in a static state, the sealing plug 14 is inserted into the first pressure relief hole 12, and the first pressure relief hole 12 is sealed. When the gate plate 3 is opened and closed, the gate plate 3 can trigger the third driving assembly 16, and the third driving assembly 16 can drive the sealing plug 14 to move, thereby opening the first pressure relief hole 12. At this time, a part of the fluid upstream of the gate plate 3 can flow through the dredging pipe 13 to the downstream of the gate plate 3, indirectly increasing the fluid flow area and balancing the pressure upstream and downstream of the gate plate 3. A pressure relief channel is provided for the fluid, reducing the "water hammer" effect, and thus reducing the impact of the fluid on the valve components. After the opening and closing actions of the gate plate 3 are completed, the third driving assembly 16 can drive the sealing plug 14 to be inserted into the first pressure relief hole 12 again to seal the first pressure relief hole 12.

[0056] As Figure 2 and Figure 3 shown, the third driving assembly 16 includes a rack 19 and two first gears 18. The rack 19 is vertically arranged and fixedly arranged on the side wall of the gate plate 3.

[0057] As Figure 2 and Figure 3 shown, the two first gears 18 are respectively rotatably arranged on the upper and lower inner walls at the sealing port in the valve body 1; the two first gears 18 are respectively meshed with the rack 19.

[0058] As Figure 2 , Figure 3 and Figure 5 shown, a rotating plate 20 is rotatably arranged in the dredging pipe 13 in the valve body 1. The central axis of the rotating plate 20 is parallel to the horizontal direction. A driving block 21 is fixedly arranged on the side of the rotating plate 20 close to the sealing plug 14. A push rod 22 is fixedly arranged on the side wall of the sealing plug 14. The driving block 21 abuts against the bottom of the push rod 22. A first roller 23 is fixedly arranged at the central axis of the rotating plate 20. The first roller 23 is coaxial with the rotating plate 20. Second rollers 24 are fixedly arranged on both of the two first gears 18. A belt 17 is arranged between the first roller 23 and the second rollers 24, and the belt 17 is driven by the first roller 23 and the second rollers 24.

[0059] As Figure 2 , Figure 3 and Figure 5As shown, before the gate plate 3 descends to close or ascends to open, the driving block 21 on the turning plate 20 abuts against the push rod 22, the sealing plug 14 is inserted into the first pressure relief hole 12, and the first pressure relief hole 12 is in a sealed state; when the gate plate 3 descends to close or ascends to open, the gate plate 3 will drive the rack 19 to move. When the gate plate 3 descends, the rack 19 first pushes the first gear 18 located at the top of the sealing port in the valve body 1 to rotate. The first gear 18 drives the second roller 24 to rotate. The second roller 24 drives the first roller 23 to rotate through the belt 17. The first roller 23 drives the turning plate 20 to rotate. The turning plate 20 drives the driving block 21 to move downward. At this time, the sealing plug 14 can move downward under the action of its own gravity and the gravity of the fluid in the valve body 1, so as to open the first pressure relief hole 12, and the fluid can flow out from the first pressure relief hole 12.

[0060] As Figure 2 , Figure 3 and Figure 5 shown, when the gate plate 3 gradually moves to the bottom of the sealing port in the valve body 1, at this time the rack 19 can gradually drive the first gear 18 located at the bottom of the sealing port in the valve body 1 to rotate. At this time, the first gear 18 can continue to drive the turning plate 20 to rotate. The turning plate 20 drives the driving block 21 to move upward. The driving block 21 can push the push rod 22 and the sealing plug 14 to move upward until the sealing plug 14 is inserted into the first pressure relief hole 12 again to seal the first pressure relief hole 12; by the same principle, when the gate plate 3 ascends to open, it can drive the sealing plug 14 to descend to open. When the gate plate 3 gradually moves to the top of the sealing port in the valve body 1, it can gradually drive the sealing plug 14 to ascend to close. During the whole process, the first pressure relief hole 12 is opened while the gate plate 3 ascends to open and descends to close, reducing the difficulty of the movement of the sealing plug 14.

[0061] As Figure 2 and Figure 3 shown, a buffer plate 25 and a buffer spring 26 are arranged at the bottom end of the sealing port in the valve body 1. The buffer plate 25 slides vertically in the valve body 1, and the scraping plate 91 abuts against the buffer plate 25; the buffer spring 26 is arranged vertically, and both ends of the buffer spring 26 are fixedly arranged on the buffer plate 25 and the inner wall of the valve body 1 respectively.

[0062] As Figure 2 and Figure 3 shown, when the gate plate 3 moves downward to close, the scraping plate 91 first contacts the buffer plate 25. Then the gate plate 3 continues to move downward, and the buffer plate 25 can compress the buffer spring 26 to move downward. The elastic force of the arranged buffer spring 26 can push the buffer plate 25 to buffer the scraping plate 91 and the gate plate 3, which can absorb part of the kinetic energy, reduce the impact force when the gate plate 3 contacts the bottom, protect the gate plate 3 from damage, and extend the service life of the gate plate 3 and related mechanical components; at the same time, it also reduces the noise generated when the gate plate 3 closes and improves the comfort of the working environment.

[0063] As Figure 2 andFigure 3 As shown, a first baffle 27 slides vertically within the dredging pipe 13, and a first connecting rod 28 slides vertically within the valve body 1. The two ends of the first connecting rod 28 are respectively fixedly arranged at the bottom of the buffer plate 25 and the first baffle 27.

[0064] As Figure 2 and Figure 3 shown, before the gate plate 3 descends and closes, the dredging pipe 13 is in an open state. When the gate plate 3 descends and closes, the scraping plate 91 pushes the buffer plate 25 downward. The buffer plate 25 can simultaneously drive the first connecting rod 28 and the first baffle 27 downward. The first baffle 27 gradually inserts into the inner cavity of the dredging pipe 13. When the gate plate 3 stops moving and closes the valve body 1, at this time, the first baffle 27 is completely inserted into the dredging pipe 13, thereby sealing the dredging pipe 13, improving the sealing performance of the dredging pipe 13, and further improving the overall valve sealing performance.

[0065] As Figure 1 、 Figure 6 and Figure 7 shown, a filtering mechanism 29 is provided at the inlet of the valve body 1. The filtering mechanism 29 includes a filtering box 291. Through holes 292 are opened on opposite sides of the filtering box 291. A flexible pipe 293 is provided inside the filtering box 291. The two ends of the flexible pipe 293 are respectively communicated with the two through holes 292. The two through holes 292 are respectively communicated with the inlet end of the valve body 1 and the pipeline; a filter plate 294 is installed at the through hole 292 on the side of the filtering box 291 close to the valve body 1. A cleaning plate 295 is rotatably arranged inside the filtering box 291. The cleaning plate 295 slides on the surface of the filter plate 294. A fourth driving component 296 for driving the cleaning plate 295 to rotate is provided inside the filtering box 291.

[0066] As Figure 1 、 Figure 6 and Figure 7 shown, the provided filtering mechanism 29 can filter solid particle impurities in the fluid, thereby reducing the wear caused by solid particle impurities to the sealing plate 2, the gate plate 3 or other components inside the valve body 1; when the solid particle impurities in the pipeline are too many and cause the filter plate 294 to be blocked, the fluid pressure in the pipeline increases. At this time, the volume of the flexible pipe 293 expands. At this time, the fourth driving component 296 can be triggered to drive the cleaning plate 295 to rotate. The cleaning plate 295 can clean the impurities on the surface of the filter plate 294, reducing the possibility of the sealing plate 2 being blocked.

[0067] As Figure 1 、 Figure 6 and Figure 7As shown, the fourth driving component 296 includes a ring gear 2961 and a third gear 2962. Both the ring gear 2961 and the third gear 2962 are rotatably arranged on the inner wall of the filter box 291. The filter plate 294 is located in the central through hole of the ring gear 2961, and one end of the cleaning plate 295 is fixedly arranged on the inner wall of the ring gear 2961. The ring gear 2961 meshes with the third gear 2962.

[0068] As Figure 1 , Figure 6 and Figure 7 shown, two driving plates 2963 are vertically arranged and slidably arranged in the filter box 291. A plurality of telescopic rods 2964 are arranged between the driving plates 2963 and the inner wall of the filter box 291. Both ends of the telescopic rods 2964 are fixedly arranged on the driving plates 2963 and the inner wall of the filter box 291 respectively; a return spring 2965 is sleeved on the telescopic rods 2964. Both ends of the return spring 2965 are fixedly arranged on the driving plates 2963 and the inner wall of the filter box 291 respectively; the driving plates 2963 are in the shape of arc plates, and the driving plates 2963 abut against the outer side wall of the hose 293. A driving rod 2966 is horizontally slidably arranged in the filter box 291 along the fluid flow direction. A fourth guide rod 2967 is horizontally arranged in the filter box 291. The end of the fourth guide rod 2967 is fixedly arranged on the inner wall of the filter box 291. The fourth guide rod 2967 penetrates and slides in the driving rod 2966. The driving rod 2966 is in a ring shape; a top block 2968 is fixedly arranged on the driving plate 2963. A slope is arranged on one side of the top block 2968 close to the driving rod 2966. The top block 2968 is slidably matched with the driving plate 2963 through the slope. A threaded rod 2969 is fixedly arranged on the driving plate 2963. The threaded rod 2969 is horizontally arranged. The threaded rod 2969 penetrates through the third gear 2962 and is in threaded cooperation with the third gear 2962.

[0069] As Figure 1 , Figure 6 and Figure 7 shown, spring fours 2970 are sleeved on both opposite ends of the driving rod 2966 on the fourth guide rod 2967, and both ends of the spring fours 2970 are fixedly arranged on the inner wall of the filter box 291 and the driving rod 2966 respectively.

[0070] As Figure 1 , Figure 6 and Figure 7As shown, the volume expansion of the hose 293 can push the drive plate 2963 to move. The drive plate 2963 drives the top block 2968 to move. The top block 2968 can contact the drive rod 2966. The top block 2968 gradually pushes the drive rod 2966 to move through the inclined plane. The drive rod 2966 drives the threaded rod 2969 to move. The threaded rod 2969 drives the third gear 2962 to rotate. The third gear 2962 drives the ring gear 2961 to rotate. When the pressure in the pipeline decreases, the hose 293 contracts. The elastic force of the fourth spring 2970 can push the drive rod 2966 and the threaded rod 2969 to move to the initial position. The ring gear 2961 rotates in the reverse direction. Therefore, the drive rod 2966 drives the threaded rod 2969 to reciprocate, so as to drive the ring gear 2961 to rotate reciprocally to drive the cleaning plate 295 to rotate reciprocally, thereby reducing the difficulty of the cleaning plate 295 rotating.

[0071] As Figure 1 , Figure 6 and Figure 7 As shown, at the bottom inner wall of the filter box 291 upstream of the filter plate 294, a second pressure relief hole 30 is opened. A pressure relief pipe 31 is connected to the second pressure relief hole 30 through a flexible pipe. A second baffle 32 slides horizontally at the second pressure relief hole 30. A second connecting rod 33 is fixedly arranged on the drive rod 2966. One end of the second connecting rod 33 is fixedly arranged on the second baffle 32.

[0072] As Figure 1 , Figure 6 and Figure 7 As shown, when the fluid in the pipeline flows normally, the second baffle 32 is inserted into the pressure relief pipe 31, and the pressure relief pipe 31 is blocked. When the pressure of the fluid in the pipeline continues to increase due to the blockage of the filter plate 294 or other reasons, at this time, the hose 293 continuously expands to push the drive plate 2963 to move. When the hose 293 gradually expands to the limit position, the drive plate 2963 can gradually pull the second connecting rod 33 to move. The second connecting rod 33 pulls the second baffle 32 to move, and the channel of the pressure relief pipe 31 gradually opens. Part of the fluid in the pipeline can flow out from the second pressure relief hole 30, so as to reduce the fluid pressure in the pipeline, and further reduce the damage caused by excessive water pressure to the pipeline or the components on the pipeline. When the fluid pressure in the pipeline decreases, the hose 293 contracts. The elastic force of the fourth spring 2970 can push the drive rod 2966 to move to the initial position. The drive rod 2966 drives the second baffle 32 to move to the initial position, thereby sealing the pressure relief pipe 31 again.

[0073] The implementation principle of the embodiment of this application is as follows: The staff drives the gate 3 to move downward. Before the gate 3 is closed, at this time, the sealing plate 2 is located inside the inner wall of the sealing port of the valve body 1, the first spring 8 is in a compressed state, and the limit block 4 is inserted into the limit groove on the sealing plate 2; when the gate 3 moves downward to close the valve, the gate 3 does not contact the sealing plate 2 during the movement. Subsequently, when the gate 3 moves downward to the bottom end of the sealing port in the valve body 1, the gate 3 can trigger the first driving assembly 9, and the first driving assembly 9 can drive the limit block 4 to move to a position away from the sealing plate 2. When the sealing groove 7 on the gate 3 corresponds to the sealing plate 2, the elastic force of the first spring 8 can push the sealing plate 2 to be inserted into the sealing groove 7, thereby closing and sealing the entire valve. At the same time, the limit block 4 can move to the initial position under the action of the reset assembly 10; when it is necessary to raise and open the gate 3, the second driving assembly 11 can be first used to push the sealing plate 2 to move outward from the gate 3 until the sealing plate 2 moves to the inside of the inner wall of the sealing port of the valve body 1. During this period, the sealing plate 2 contacts the limit block 4 and pushes the limit block 4 to move through the inclined surface on the limit block 4. When the sealing plate 2 moves to a position where the limit groove corresponds to the limit block 4, the limit block 4 can be inserted into the limit groove on the sealing plate 2 under the action of the reset assembly 10, thereby limiting the sealing plate 2 again, and thus facilitating the raising and opening of the gate 3; the friction between the gate 3 and the sealing plate 2 is reduced during the rising and opening process of the gate 3, thereby improving the overall sealing performance of the valve.

[0074] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. An electric water valve, comprising a valve body (1), a sealing plate (2) and a gate plate (3), characterized in that: The sealing plate (2) slides horizontally on the inner wall at the sealing port inside the valve body (1). A limiting block (4) is slidably arranged inside the valve body (1). A limiting groove for inserting the limiting block (4) is formed at the bottom of the sealing plate (2). An inclined surface is provided at one end of the limiting block (4) close to the sealing plate (2). The limiting block (4) is slidably engaged with the sealing plate (2) through the inclined surface. A sealing groove (7) for inserting the sealing plate (2) is formed on the gate plate (3). A plurality of first springs (8) are arranged inside the inner wall at the sealing port of the valve body (1). Two ends of each first spring (8) are fixedly arranged on the sealing plate (2) and the inner wall of the valve body (1) respectively. A first driving assembly (9) for driving the limiting block (4) to move and a reset assembly (10) for resetting the limiting block (4) are arranged inside the valve body (1). A second driving assembly (11) for driving the sealing plate (2) to move is arranged on the gate plate (3). The first driving assembly (9) includes a scraper (91) and a first pushing block (92). The scraper (91) is fixedly arranged on the gate plate (3). The first pushing block (92) slides horizontally on the limiting block (4). The scraper (91) abuts against the first pushing block (92). The scraper (91) is slidably engaged with the surface of the sealing plate (2). An inclined surface is provided at one end of the first pushing block (92) close to the scraper (91). The first pushing block (92) is slidably engaged with the scraper (91) through the inclined surface. The first pushing block (92) can drive the limiting block (4) to move away from the sealing plate (2). The second driving assembly (11) includes a pushing plate (111), a cylinder (112) and a connecting rod (113). The pushing plate (111) slides horizontally in the sealing groove (7) and abuts against the sealing plate (2). The cylinder (112) is arranged on the top of the gate plate (3). Two ends of the connecting rod (113) are fixedly arranged on the piston rod of the cylinder (112) and the pushing plate (111) respectively.

2. The electric water valve according to claim 1, wherein: The reset assembly (10) includes a second spring (101) and a third spring (102). Two ends of the second spring (101) are fixedly arranged on the limiting block (4) and the inner wall of the valve body (1) respectively. Two ends of the third spring (102) are fixedly arranged on the limiting block (4) and the first pushing block (92) respectively. An abutting block (103) is fixedly arranged on the first pushing block (92). A second pushing block (104) is fixedly arranged on the inner wall of the valve body (1). An inclined surface is provided on the second pushing block (104). The second pushing block (104) is slidably engaged with the abutting block (103) through the inclined surface.

3. An electric water valve according to claim 1, characterized in that: A pressure relief hole one (12) is provided in the side wall of the valve body (1) at the upstream part of the gate plate (3). A dredging pipe (13) is provided on the valve body (1). One end of the dredging pipe (13) communicates with the pressure relief hole one (12), and the other end of the dredging pipe (13) communicates with the inner cavity of the valve body (1) at the downstream part of the gate plate (3); A sealing plug (14) slides in the pressure relief hole one (12), and a third driving component (16) for driving the sealing plug (14) to move is provided in the valve body (1).

4. An electric water valve according to claim 3, characterized in that: The third driving component (16) includes a rack (19) and two first gears (18), and the rack (19) is fixedly arranged on the gate plate (3); The two first gears (18) are respectively rotatably arranged on the upper and lower inner walls at the sealing port in the valve body (1); Both of the two first gears (18) are engaged with the rack (19); A rotating plate (20) is rotatably arranged in the valve body (1). A driving block (21) is fixedly arranged on the side wall of the rotating plate (20). A push rod (22) is fixedly arranged on the side wall of the sealing plug (14). The driving block (21) abuts against the push rod (22); A first roller (23) is fixedly arranged at the central axis of the rotating plate (20). A second roller (24) is fixedly arranged on each of the two first gears (18). A belt (17) is arranged between the first roller (23) and the second roller (24), and the belt (17) is driven by the first roller (23) and the second roller (24); The rotating plate (20) can drive the driving block (21) to move up or down.

5. The electric water valve according to claim 3, wherein: A buffer plate (25) and a buffer spring (26) are arranged at the bottom end of the sealing port in the valve body (1). The buffer plate (25) slides in the valve body (1). The scraping plate (91) abuts against the buffer plate (25), and the two ends of the buffer spring (26) are respectively fixedly arranged on the buffer plate (25) and the inner wall of the valve body (1).

6. The electric water valve according to claim 5, characterized in that: A first baffle (27) slides in the dredging pipe (13). A first connecting rod (28) slides in the valve body (1). The two ends of the first connecting rod (28) are respectively fixedly arranged on the buffer plate (25) and the first baffle (27).

7. The electric water valve according to claim 1, characterized in that: A filtering mechanism (29) is provided at the inlet of the valve body (1). The filtering mechanism (29) includes a filtering box (291). Through holes (292) are formed on opposite sides of the filtering box (291). A hose (293) is disposed inside the filtering box (291). Two ends of the hose (293) are respectively communicated with the two through holes (292). The two through holes (292) are respectively communicated with the inlet end of the valve body (1) and a pipeline. A filter plate (294) is installed at the through hole (292) on the side of the filtering box (291) close to the valve body (1). A cleaning plate (295) is rotatably disposed inside the filtering box (291). The cleaning plate (295) slides on the surface of the filter plate (294). A fourth driving assembly (296) for driving the cleaning plate (295) to rotate is disposed inside the filtering box (291).

8. An electric water valve according to claim 7, characterized in that: The fourth driving assembly (296) includes an annular gear (2961), a third gear (2962), and a fourth spring (2970). The annular gear (2961) and the third gear (2962) are both rotatably disposed on the inner wall of the filtering box (291). The filter plate (294) is located in the central through hole of the annular gear (2961). One end of the cleaning plate (295) is fixedly disposed on the inner wall of the annular gear (2961). The annular gear (2961) meshes with the third gear (2962). A driving plate (2963) slides inside the filtering box (291). The driving plate (2963) abuts against the outer sidewall of the hose (293). A driving rod (2966) horizontally slides inside the filtering box (291). A top block (2968) is fixedly disposed on the driving plate (2963). An inclined surface is provided on the top block (2968). The top block (2968) slidably cooperates with the driving plate (2963) through the inclined surface. A threaded rod (2969) is fixedly disposed on the driving plate (2963). The threaded rod (2969) is in threaded cooperation with the third gear (2962). Two ends of the fourth spring (2970) are respectively fixedly disposed on the inner wall of the filtering box (291) and the driving rod (2966).

9. An electric water valve according to claim 8, characterized in that: A second pressure relief hole (30) is formed on the inner wall of one side of the filtering box (291) upstream of the filter plate (294). A pressure relief pipe (31) is communicated with the second pressure relief hole (30). A second baffle (32) slides at the second pressure relief hole (30). A second connecting rod (33) is fixedly disposed on the driving rod (2966). One end of the second connecting rod (33) is fixedly disposed on the second baffle (32).

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