An automatically closable water valve

Abstract

The application belongs to the technical field of water valves, and specifically discloses a water valve capable of being automatically closed, which comprises a valve shell with an open top end, a valve cover, a plugging mechanism and a driving mechanism arranged in the valve shell, a water outlet and a water inlet are arranged on the valve shell, a water inlet cavity is arranged on the side of the valve shell away from the water outlet, the water inlet cavity is communicated with the water inlet, the valve cover is bolted to the valve shell, the plugging mechanism comprises a connecting plate and a valve body, the connecting plate is slidingly connected to the valve shell, the valve body is opposite to the water outlet, a pin rod is movably connected to the valve body, a Z-shaped limiting rod and a U-shaped pull rod are movably connected to the pin rod respectively, a limiting block is arranged at the top end of the connecting plate, an opening assembly is movably connected to the U-shaped pull rod, a first spring is arranged between the Z-shaped limiting rod and the connecting plate, and the driving mechanism comprises a driving unit and a transmission unit for driving the driving unit to separate the Z-shaped limiting rod from the limiting block.

Description

Technical Field

[0001] This invention relates to the field of water valve technology, and more specifically to a water valve that can be automatically shut off. Background Technology

[0002] When workers shut off the water supply for maintenance, if the water valves in your home are left on, a large amount of water will accumulate in your home once the water is restored. Similarly, if a water pipe bursts due to aging, a large amount of water will also accumulate if not detected in time. Whether it's forgetting to turn off the water valve or a burst pipe, the leak can only be stopped once someone notices and turns off the valve. However, by the time people discover the leak, a large amount of water may have already accumulated in the home, damaging the furniture. Summary of the Invention

[0003] The purpose of this invention is to provide a water valve that can automatically shut off, so as to solve the problem that when tap water leaks in the home, it cannot automatically stop the leakage.

[0004] To achieve the above objectives, the basic solution provided by this invention is as follows: an automatically closing water valve, comprising a valve housing with an open top, a valve cover, and a sealing mechanism and a driving mechanism disposed inside the valve housing. The valve housing has an outlet on one side and an inlet chamber on the side away from the outlet. One end of the inlet chamber is connected to the inlet, and the other end is connected to the bottom of the valve housing. The valve cover is bolted to the valve housing. The sealing mechanism includes a connecting plate and a valve body. The connecting plate has two sliders on its side. The valve housing has a groove for slidingly connecting the sliders. The valve body faces the outlet... The valve body has a movably connected pin, to which a Z-shaped limiting rod and a U-shaped pull rod are movably connected respectively. A limiting block is provided at the top of the connecting plate. An opening component for driving the Z-shaped limiting rod to engage with the limiting block is movably connected to the U-shaped pull rod. A first spring is connected to the Z-shaped limiting rod, with the other end of the first spring connected to the connecting plate. The driving mechanism includes a toggle unit and a transmission unit for driving the toggle unit to separate the Z-shaped limiting rod from the limiting block. The transmission unit is located inside the valve body and below the connecting plate, while the toggle unit is located above the connecting plate.

[0005] The principle and beneficial effects of this invention are as follows: When using this automatic water valve, firstly connect the inlet of the automatic water valve to the outlet of the water meter, then connect the outlet of the automatic water valve to the inlet pipe entering the room. Then, the user uses the opening component to lock the Z-shaped limiting rod onto the limiting block, so that the valve body no longer blocks the outlet. When the tap water is connected, the tap water enters the inlet chamber from the inlet and flows into the bottom of the valve body. Under the action of the water flow, the transmission unit rotates, thereby driving the actuating unit to rotate. When the actuating unit touches the Z-shaped limiting rod during rotation, the Z-shaped limiting rod separates from the limiting block. Under the action of the first spring stress, the valve body moves towards the outlet, thereby blocking the outlet. At this time, the automatic water valve is closed, and tap water no longer enters the room. When it is necessary to open the automatic water valve, the user can use the opening component to drive the U-shaped pull rod to move away from the outlet, thereby driving the valve body away from the outlet until the Z-shaped limiting rod is locked onto the limiting block. Compared with existing technologies, this invention can automatically shut off the water valve when there is a leak in the home and the home is unoccupied for a long time, thereby preventing the home from being flooded.

[0006] Option 2, a preferred embodiment of the basic option, includes a rotating rod and a rotating handle. One end of the rotating rod has a U-shaped protrusion that fits inside a U-shaped pull rod and is movably connected to it. The other end of the rotating rod rotatably passes through the top of the valve cover and is connected to the rotating handle. A second spring is connected to the rotating handle, with its free end connected to the valve cover. When it is necessary to separate the valve body from the outlet, the user holds the rotating handle and rotates the rotating rod, causing the U-shaped protrusion to move the U-shaped pull rod away from the outlet, thereby disengaging the valve body from the outlet. Simultaneously, a Z-shaped limiting rod engages with a limiting block. When the user releases the rotating handle, the U-shaped protrusion and rotating rod return to their original positions under the stress of the second spring.

[0007] Option 3, a preferred embodiment of Option 2, comprises a support groove, a connecting groove, a support plate, a first transmission assembly, a second transmission assembly, a third transmission assembly, a fourth transmission assembly, a fifth transmission assembly, a sixth transmission assembly, a seventh transmission assembly, an eighth transmission assembly, a ninth transmission assembly, and a tenth transmission assembly. The support plate is slidably disposed within the valve housing and spaced apart from the inner side of the bottom end of the valve housing. Several water outlet grooves are formed on the inner wall of the valve housing where it abuts the support plate. The connecting groove is located at the top of the support plate, and a limiting ring is fitted around its periphery. The limiting ring is slidably connected to the inner wall of the valve housing. Several water inlet holes are provided on the periphery of the connecting groove below the limiting ring. Several water outlet holes are provided on the periphery above the position ring. The support groove is slidably disposed in the valve body and placed at the top of the connecting groove. The first transmission component includes a first rotating shaft. The bottom end of the first rotating shaft is rotatably connected to the bottom end of the connecting groove. The top end of the first rotating shaft passes through the bottom end of the connecting groove. An impeller is disposed on the first rotating shaft and located in the connecting groove. A first gear is connected to the top end of the first rotating shaft. The second transmission component, the third transmission component, the fourth transmission component, the fifth transmission component, the sixth transmission component, the eighth transmission component, the ninth transmission component, and the tenth transmission component are sequentially connected in transmission. The second transmission component is connected in transmission to the first gear, and the tenth transmission component is connected in transmission to the toggle unit.

[0008] When tap water enters the bottom of the valve body sequentially through the inlet and inlet chamber, the support plate is pushed upward along the valve body by the water pressure. This causes the connecting groove and support groove to move upward a certain distance. As the support groove moves upward, it pushes the connecting plate to slide upward along the inside of the valve body, thereby causing the tenth transmission component to move upward and engage with the actuating unit. Tap water flows out from the outlet groove and into the connecting groove through the inlet hole, then exits through the outlet hole and finally exits through the outlet. The tap water entering the connecting groove can drive the impeller to rotate. When the impeller rotates, it can drive the first gear to rotate. The rotation of the first gear can drive the second transmission component to rotate. When the second transmission component rotates, it can cause the third, fourth, fifth, sixth, eighth, ninth, and tenth transmission components to rotate sequentially. When the tenth transmission component rotates, it can drive the actuating unit to rotate.

[0009] Option 4, a preferred embodiment of Option 3, includes the second, third, fourth, fifth, seventh, eighth, and ninth transmission components, each comprising a second gear, a third gear, and a second rotating shaft for mounting the second and third gears. Each second rotating shaft is rotatably connected to the bottom end of the connecting plate and the support groove. The second and third gears of the second, third, fourth, and fifth transmission components are sequentially cross-meshed, and the first gear meshes with the second gear of the second transmission component. The sixth transmission component includes a fourth gear and a shaft for mounting the fourth gear. The third rotating shaft is rotatably connected to the bottom ends of the connecting plate and the support groove. The third gear of the fifth transmission assembly meshes with the fourth gear. The second gear of the seventh transmission assembly meshes with the fourth gear. The second gear and the first gear of the seventh, eighth, and ninth transmission assemblies mesh in a cross manner. The tenth transmission assembly includes a fourth rotating shaft and a fifth gear. The bottom end of the fourth rotating shaft is rotatably connected to the bottom end of the support groove. The fifth gear is sleeved on the fourth rotating shaft and meshes with the third gear of the ninth transmission assembly. The top end of the fourth rotating shaft is connected to a connector for connecting the toggle unit.

[0010] Option 5, which is a preferred embodiment of Option 4, includes a sleeve and a connecting rod. The sleeve is equipped with a toggle block. The bottom end of the sleeve is open and faces the top end of the connector. The top end of the sleeve is closed and is fixedly connected to the bottom end of the connecting rod. The top end of the connecting rod movably passes through the valve cover. The top end of the connecting rod is connected to an adjustment unit for setting the water flow rate at the outlet. The total water volume entering the room from the outlet is set by adjusting the travel of the toggle block to the Z-shaped limit rod via the adjustment unit. When the total water volume discharged from the outlet reaches the set value, the toggle block can just squeeze the Z-shaped limit rod, causing the Z-shaped limit rod to disengage from the limit block. At this time, the valve body can block the outlet, while the support plate, connecting groove, and connecting plate move downward as a whole, thereby separating the connector on the fourth rotating shaft from the sleeve. When water leakage occurs in the house, the toggle block continuously moves closer to the Z-shaped limit rod. When the Z-shaped limit rod is squeezed and separates from the limit block, the valve body can block the outlet, thereby stopping the water leakage in the house.

[0011] Option 6, a preferred embodiment of Option 5, includes a third spring and a limiting plate. The limiting plate is fixed to the top of the connecting rod and has several connecting holes for connecting the third spring. The free end of the third spring is connected to the valve cover. Rotating the limiting plate rotates the sleeve, thereby causing the actuating block to rotate. When the actuating block rotates to the point where the Z-shaped limiting rod's stroke meets the requirements, the user can connect the third spring to the corresponding connecting hole of the limiting plate. This allows the actuating block to reset after the sleeve and connecting piece are separated.

[0012] Option 7, a preferred embodiment of Option 6, has a connector for connecting a water pipe bolted to the water outlet. The connector at the water outlet facilitates connection to the indoor water inlet pipe.

[0013] Option 8, a preferred embodiment of Option 7, features a slot at the top of the valve cover, into which a support block is movably inserted. When the valve body needs to be kept open, the user can place the support block under the limit plate, preventing the connector from connecting to the sleeve and thus avoiding rotation of the actuating block.

[0014] Option 9, which is a preferred embodiment of Option 8, includes a limiting plate and a plug rod. The limiting plate is fixed to the top of the fourth rotating shaft and located below the connecting plate. The plug rod is fixed to the top of the limiting plate. The plug rod has raised patterns, and the sleeve has a groove for engaging the raised patterns.

[0015] Option 10, which is a preferred embodiment of Option 9, has two sleeves at the top of the connecting plate, each sleeve being fitted with a fourth spring, the top of the fourth spring abutting against the bottom of the valve cover; a groove is provided at the connection between the valve body and the valve cover, and an O-ring is provided in the groove; an observation window is provided at the top of the valve cover. Attached Figure Description

[0016] Figure 1 This is a perspective view of an automatically closing water valve according to the present invention;

[0017] Figure 2 This is a front view of a water valve that can be automatically shut off according to the present invention;

[0018] Figure 3 This is a right view of a water valve that can be automatically shut off according to the present invention;

[0019] Figure 4 This is a perspective view of the internal structure of an automatically closing water valve according to the present invention;

[0020] Figure 5 This is a rear view of the internal structure of an automatically closing water valve according to the present invention;

[0021] Figure 6 This is a right view of the internal structure of an automatically closing water valve according to the present invention;

[0022] Figure 7 This is a top view of the internal structure of an automatically closing water valve according to the present invention;

[0023] Figure 8 This is a perspective view of the internal structure of an automatically closing water valve according to the present invention, excluding the connecting plate and the support groove.

[0024] Figure 9This is a top view of the internal structure of an automatically closing water valve according to the present invention, excluding the connecting plate and support groove;

[0025] Figure 10 This is a top view of the valve housing in an automatically closing water valve according to the present invention;

[0026] Figure 11 yes Figure 10 Sectional view of AA;

[0027] Figure 12 yes Figure 10 Sectional view of BB;

[0028] Figure 13 yes Figure 10 A sectional view of CC. Detailed Implementation

[0029] The present invention will be further described in detail below through specific embodiments:

[0030] The reference numerals in the accompanying drawings include: valve housing 1, valve cover 2, inlet 3, outlet 4, connector 5, inlet chamber 6, valve body 7, pin 8, Z-shaped limit rod 9, U-shaped pull rod 10, limit block 11, connecting plate 12, first spring 13, rotating rod 14, U-shaped protrusion 15, rotating handle 16, sleeve rod 17, fourth spring 18, sleeve 19, actuating block 20, connecting rod 21, limit plate 22, connecting hole 23, third spring 24, slide groove 25, slider 26, second spring 27, support block 28, observation window 29, support groove 3 0. Support plate 31. Connecting groove 32. Water inlet hole 33. Water outlet hole 34. First rotating shaft 35. Impeller 36. First gear 37. Second gear 38. Third gear 39. Second transmission assembly 40. Third transmission assembly 41. Fourth transmission assembly 42. Fifth transmission assembly 43. Second rotating shaft 44. Third rotating shaft 45. Fourth gear 46. Seventh transmission assembly 47. Eighth transmission assembly 48. Ninth transmission assembly 49. Fourth rotating shaft 50. Fifth gear 51. Limiting plate 52. Insert rod 53. Limiting ring 54. Water outlet groove 55. Groove 56.

[0031] like Figures 1 to 13As shown: An automatically closing water valve includes a valve housing 1 with an open top, a valve cover 2, and a sealing mechanism and a driving mechanism disposed inside the valve housing 1. A water outlet 4 is provided on one side of the valve housing 1, and a connector 5 is bolted to the water outlet 4, allowing a water pipe entering the room to be connected via the connector 5. A water inlet chamber 6 is provided on the side of the valve housing 1 away from the water outlet 4, with one end of the water inlet chamber 6 connected to a water inlet 3, and the other end of the water inlet chamber 6 connected to the bottom end of the valve housing 1. The water inlet 3 is used to connect to the outlet end of a water meter. The valve cover 2 is bolted to the valve housing 1, and a slot is provided at the top of the valve cover 2, into which a support block 28 is movably inserted. A groove 56 is provided at the connection between the valve housing 1 and the valve cover 2, and an O-ring is provided within the groove 56. An observation window 29 is provided at the top of the valve cover 2.

[0032] The sealing mechanism includes a connecting plate 12 and a valve body 7. Two sliders 26 are provided on the side of the connecting plate 12. A groove 25 for sliding connection of the sliders 26 is provided inside the valve body 1. The valve body 7 faces the outlet 4. A pin 8 is movably connected to the valve body 7. A ZZ-shaped limiting rod 9 and a UU-shaped pull rod 10 are movably connected to the pin 8. A limiting block 11 is provided at the top of the connecting plate 12. A first spring 13 is connected to the ZZ-shaped limiting rod 9, and the other end of the first spring 13 is connected to the connecting plate 12. An opening for driving the ZZ-shaped limiting rod 9 to engage with the limiting block 11 is movably connected to the UU-shaped pull rod 10. The opening assembly includes a rotating rod 14 and a rotating handle 16. A U-shaped protrusion 15 is fixedly connected to the bottom end of the rotating rod 14. The U-shaped protrusion 15 is sleeved inside the U-shaped pull rod 10 and is movably connected to the U-shaped pull rod 10. The other end of the rotating rod 14 rotates through the top end of the valve cover 2 and is fixedly connected to the rotating handle 16. A second spring 27 is connected to the rotating handle 16. The free end of the second spring 27 is fixedly connected to the valve cover 2. The top end of the connecting plate 12 is provided with two sleeve rods 17. A fourth spring 18 is sleeved on each sleeve rod 17. The top end of the fourth spring 18 abuts against the bottom end of the valve cover 2.

[0033] The driving mechanism includes a toggle unit, an adjustment unit, and a transmission unit for driving the toggle unit to separate the ZZ-shaped limiting rod 9 from the limiting block 11. The transmission unit is located inside the valve housing 1 and below the connecting plate 12, while the toggle unit is located above the connecting plate 12. The toggle unit includes a sleeve 19 and a connecting rod 21. A toggle block 20 is fixedly connected to the sleeve 19. The bottom end of the sleeve 19 is open, and the top end of the sleeve 19 is closed and fixedly connected to the bottom end of the connecting rod 21. The top end of the connecting rod 21 movably passes through the valve cover 2. The adjustment unit includes a third spring 24 and a limiting plate 22. The limiting plate 22 is fixedly connected to the top end of the connecting rod 21. The limiting plate 22 has several connecting holes 23 for connecting the third spring 24. The free end of the third spring 24 is connected to the valve cover 2.

[0034] The transmission unit includes a support groove 30, a connecting groove 32, a support plate 31, a first transmission assembly, a second transmission assembly 40, a third transmission assembly 41, a fourth transmission assembly 42, a fifth transmission assembly 43, a sixth transmission assembly, a seventh transmission assembly 47, an eighth transmission assembly 48, a ninth transmission assembly 49, and a tenth transmission assembly. The support plate 31 is slidably disposed inside the valve housing 1 and spaced apart from the inner side of the bottom end of the valve housing 1. Several water outlet grooves 55 are provided on the inner wall of the valve housing 1 that abuts against the support plate 31. The connecting groove 32 is located at the top of the support plate 31. A limiting ring 54 is sleeved on the periphery of the connecting groove 32. The limiting ring 54 is slidably connected to the inner wall of the valve housing 1. Several water inlet holes 33 are provided on the periphery of the connecting groove 32 below the limiting ring 54, and several water outlet holes 34 are provided on the periphery of the connecting groove 32 above the limiting ring 54. The support groove 30 is slidably disposed inside the valve housing 1 and is located at the top of the connecting groove 32.

[0035] The first transmission assembly includes a first rotating shaft 35, the bottom end of which is rotatably connected to the bottom end of a connecting groove 32, and the top end of which passes through the bottom end of the connecting groove 32. An impeller 36 is mounted on the first rotating shaft 35 and located within the connecting groove 32. A first gear 37 is connected to the top end of the first rotating shaft 35. The second, third, fourth, fifth, seventh, eighth, and ninth transmission assemblies 40, 41, 42, 43, 47, 48, and 49 each include a second gear 38, a third gear 39, and a second rotating shaft 44 for mounting the second gear 38 and the third gear 39. Each second rotating shaft 44 is rotatably connected to the bottom end of a connecting plate 12 and a support groove 30. The second gears 38 and 39 of the second, third, fourth, and fifth transmission assemblies 40 and 43 are sequentially cross-meshed. The first gear 37 meshes with the second gear 38 of the second transmission assembly 40. The sixth transmission assembly includes a fourth gear 46 and a first gear 37 for mounting the fourth gear 46. The third shaft 45 is rotatably connected to the bottom ends of the connecting plate 12 and the support groove 30, respectively. The third gear 39 of the fifth transmission assembly 43 meshes with the fourth gear 46. The second gear 38 of the seventh transmission assembly 47 meshes with the fourth gear 46. The second gear 38 and the first gear 37 of the seventh transmission assembly 47, the eighth transmission assembly 48, and the ninth transmission assembly 49 mesh alternately in sequence. The tenth transmission assembly includes a fourth shaft 50 and a fifth gear 51. The bottom end of the fourth shaft 50 rotates with the bottom end of the support groove 30. The fifth gear 51 is sleeved on the fourth rotating shaft 50 and meshes with the third gear 39 of the ninth transmission assembly 49. The top end of the fourth rotating shaft 50 is connected to a connector for connecting the actuating unit. The connector includes a limiting plate 52 and a plug rod 53. The limiting plate 52 is fixed to the top end of the fourth rotating shaft 50 and is located below the connecting plate 12. The plug rod 53 is fixed to the top end of the limiting plate 52. The plug rod 53 is provided with raised patterns. The sleeve 19 is provided with a slot for engaging the raised patterns. The plug rod 53 is directly opposite the opening of the sleeve 19.

[0036] The implementation method of this embodiment is as follows: When using the automatic water valve, firstly connect the inlet 3 of the automatic water valve to the outlet of the water meter, then connect the outlet 4 of the automatic water valve to the inlet pipe entering the room. When tap water enters the bottom of the valve body 1 through the inlet 3 and the inlet chamber 6 in sequence, under the action of water pressure, the support plate 31 is pushed upward along the valve body 1, thereby causing the connecting groove 32, the support groove 30, and the connecting plate 12 to move upward a certain distance. After the connecting plate 12 moves upward along the valve body 1, the insertion rod 53 will be inserted into the sleeve 19. The water entering the valve body 1 will exit through the outlet groove 55 and then enter the connecting groove 32 through the inlet hole 33, and then be discharged from the outlet hole 34, and finally be discharged from the automatic water valve through the outlet 4. When the tap water enters the connecting groove 32, it will drive the impeller 36 to rotate. When the impeller 36 rotates, it will drive the first gear 37 to rotate. This will drive the second transmission component 40 to rotate. When the second transmission component 40 rotates, the third transmission component 41, the fourth transmission component 42, the fifth transmission component 43, the sixth transmission component, the eighth transmission component 48, the ninth transmission component 49, and the tenth transmission component will rotate in sequence. When the tenth transmission component rotates, it will drive the sleeve 19 to rotate, thereby driving the actuating block 20 to rotate. When the actuating block 20 rotates and touches and squeezes the ZZ-shaped limiting rod 9, the ZZ-shaped limiting rod 9 will separate from the limiting block 11. Under the stress of the first spring 13, the valve body 7 will move towards the water outlet 4, thereby blocking the water outlet 4. At this time, the automatic water valve will close, and tap water will no longer enter the room. The support plate 31, the connecting groove 32, the support groove 30, and the connecting plate 12 will move downward as a whole, thereby separating the insert rod 53 from the sleeve 19. The actuating block 20 will reset under the stress of the third spring 24.

[0037] When the automatic water valve needs to be opened, the user holds the rotating handle 16 and rotates the rotating rod 14, causing the UU-shaped protrusion 15 to drive the UU-shaped pull rod 10 to move away from the water outlet 4, thereby causing the valve body 7 to disengage from the water outlet 4. At the same time, the ZZ-shaped limit rod 9 is engaged with the limit block 11. When the user releases the rotating handle 16, the UU-shaped protrusion 15 and the rotating rod 14 return to their original positions under the stress of the second spring 27.

[0038] In this scheme, the greater the stroke of the toggle block 20 to the ZZ-shaped limit rod 9, the longer the transmission unit needs to rotate, thus resulting in a larger total amount of tap water discharged from the outlet 4, and vice versa.

[0039] The above descriptions are merely embodiments of the present invention, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A water valve that can be automatically shut off, characterized in that, The device includes a valve housing with an open top, a valve cover, and a sealing mechanism and a driving mechanism located inside the valve housing. The valve housing has an outlet on one side and an inlet chamber on the side away from the outlet. One end of the inlet chamber is connected to the inlet, and the other end is connected to the bottom of the valve housing. The valve cover is bolted to the valve housing. The sealing mechanism includes a connecting plate and a valve body. The connecting plate has two sliders on its side. The valve housing has a groove for slidingly connecting the sliders. The valve body faces the outlet, and a pin is movably connected to the valve body. A Z-shaped limiting rod and a U-shaped pull rod are movably connected to the pin rod respectively. A limiting block is provided at the top of the connecting plate. An opening component for driving the Z-shaped limiting rod to engage with the limiting block is movably connected to the U-shaped pull rod. A first spring is connected to the Z-shaped limiting rod, and the other end of the first spring is connected to the connecting plate. The driving mechanism includes a toggle unit and a transmission unit for driving the toggle unit to separate the Z-shaped limiting rod from the limiting block. The transmission unit is located inside the valve body and below the connecting plate, while the toggle unit is located above the connecting plate. The opening assembly includes a rotating rod and a rotating handle. One end of the rotating rod has a U-shaped protrusion, which is fitted inside a U-shaped pull rod and movably connected to the U-shaped pull rod. The other end of the rotating rod rotates through the top of the valve cover and is connected to the rotating handle. A second spring is connected to the rotating handle, and the free end of the second spring is connected to the valve cover. The transmission unit includes a support groove, a connecting groove, a support plate, a first transmission assembly, a second transmission assembly, a third transmission assembly, a fourth transmission assembly, a fifth transmission assembly, a sixth transmission assembly, a seventh transmission assembly, an eighth transmission assembly, a ninth transmission assembly, and a tenth transmission assembly. The support plate is slidably disposed within the valve housing and spaced apart from the inner side of the bottom end of the valve housing. Several water outlet grooves are formed on the inner wall of the valve housing where it abuts the support plate. The connecting groove is located at the top of the support plate, and a limiting ring is fitted around its periphery. The limiting ring is slidably connected to the inner wall of the valve housing. Several water inlet holes are provided on the periphery of the connecting groove below the limiting ring, and several water inlet holes are provided on the periphery of the connecting groove above the limiting ring. The valve has several water outlet holes on its side. The support groove is slidably disposed in the valve housing and placed at the top of the connecting groove. The first transmission component includes a first rotating shaft. The bottom end of the first rotating shaft is rotatably connected to the bottom end of the connecting groove. The top end of the first rotating shaft passes through the bottom end of the connecting groove. An impeller is provided on the first rotating shaft and is located in the connecting groove. A first gear is connected to the top end of the first rotating shaft. The second, third, fourth, fifth, sixth, eighth, ninth, and tenth transmission components are sequentially connected in a transmission manner. The second transmission component is connected in a transmission manner to the first gear, and the tenth transmission component is connected in a transmission manner to the actuating unit.

2. The water valve that can be automatically closed according to claim 1, characterized in that, The second, third, fourth, fifth, seventh, eighth, and ninth transmission components each include a second gear, a third gear, and a second rotating shaft for mounting the second and third gears. Each second rotating shaft is rotatably connected to the bottom end of a connecting plate and a support groove. The second and third gears of the second, third, fourth, and fifth transmission components are sequentially and cross-meshed. The first gear and the second gear of the second transmission component mesh. The sixth transmission component includes a fourth gear and a third rotating shaft for mounting the fourth gear. The third rotating shaft is rotatably connected to the bottom ends of the connecting plate and the support groove, respectively. The third gear of the fifth transmission assembly meshes with the fourth gear, and the second gear of the seventh transmission assembly meshes with the fourth gear. The second gear and the first gear of the seventh, eighth, and ninth transmission assemblies mesh in a cross manner. The tenth transmission assembly includes a fourth rotating shaft and a fifth gear. The bottom end of the fourth rotating shaft is rotatably connected to the bottom end of the support groove. The fifth gear is sleeved on the fourth rotating shaft and meshes with the third gear of the ninth transmission assembly. The top end of the fourth rotating shaft is connected to a connector for connecting the actuating unit.

3. The water valve that can be automatically closed according to claim 2, characterized in that... The actuating unit includes a sleeve and a connecting rod. The sleeve is provided with an actuating block. The bottom end of the sleeve is open and faces the top end of the connector. The top end of the sleeve is closed and is fixedly connected to the bottom end of the connecting rod. The top end of the connecting rod movably passes through the valve cover. The top end of the connecting rod is connected to an adjustment unit for setting the water flow rate at the outlet.

4. The water valve that can be automatically closed according to claim 3, characterized in that, The adjustment unit includes a third spring and a limiting plate. The limiting plate is fixed to the top of the connecting rod. The limiting plate has several connecting holes for connecting the third spring. The free end of the third spring is connected to the valve cover.

5. The water valve that can be automatically closed according to claim 4, characterized in that, The outlet is bolted with a connector for connecting a water pipe.

6. The water valve that can be automatically closed according to claim 5, characterized in that, The valve cover has a slot at its top, and a support block is movably inserted into the slot.

7. The water valve that can be automatically closed according to claim 6, characterized in that, The connector includes a limiting plate and a plug rod. The limiting plate is fixed to the top of the fourth rotating shaft and located below the connecting plate. The plug rod is fixed to the top of the limiting plate. The plug rod has raised patterns, and the sleeve has a slot for engaging the raised patterns.

8. The water valve that can be automatically closed according to claim 7, characterized in that, The top of the connecting plate is provided with two sleeve rods, and a fourth spring is fitted on each sleeve rod. The top of the fourth spring abuts against the bottom of the valve cover. A groove is provided at the connection between the valve body and the valve cover, and an O-ring is provided in the groove. An observation window is provided at the top of the valve cover.

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