Flushing system of closestool

Abstract

The flushing system comprises a water tank installed in the closestool and a water pump arranged in an inner cavity of the water tank, and further comprises a flushing valve, a first water outlet and a second water outlet are formed in the flushing valve, a negative pressure cavity communicated with the second water outlet is formed in the flushing valve, the second water outlet is connected with the water inlet end of the water pump, and the first water outlet is connected with the water inlet end of the water pump. A water sealing lantern ring and a water control assembly for automatically or manually controlling the water sealing lantern ring to be sealed or conducted are formed on a water path communicated with the inner cavity of the water tank and the first water outlet. According to the utility model, the flushing system can be effectively optimized, the flushing amount can be supplemented, manual flushing can be realized, and the flushing device can be normally used in case of power failure.

Description

Technical Field

[0001] The utility model relates to the technical field of toilet flushing, in particular to a toilet flushing system. Background Art

[0002] With the application and promotion of toilets or smart toilets, more and more toilets or smart toilets are entering people's home bathroom equipment. An important system in a smart toilet or smart toilet is the flushing water system. The structure of the flushing system on the existing toilet is relatively complicated. If the flushing volume is insufficient, water cannot be replenished, and the flushing system cannot be used normally after a power outage. Utility Model Content

[0003] The utility model aims to provide a flushing system for a toilet, which can effectively optimize the flushing system, replenish the flushing water volume, and can be flushed manually and can be used normally even when there is a power outage.

[0004] In order to solve the above technical problems, the utility model adopts the following solutions:

[0005] A flushing system for a toilet comprises a water tank installed in the toilet and a water pump arranged in an inner cavity of the water tank, and also comprises a flushing valve, wherein the flushing valve is provided with a first water outlet and a second water outlet, a negative pressure chamber connected to the second water outlet is provided in the flushing valve, the second water outlet is connected to a water inlet end of the water pump, and a water sealing ring and a water control component which automatically or manually controls the sealing or conduction of the water channel at the water sealing ring are formed on the water channel connected to the inner cavity of the water tank and the first water outlet.

[0006] Due to the adoption of the above technical solution, a water tank is installed inside the toilet to store water required for flushing. The design of the inner cavity of the water tank needs to ensure smooth storage and flow of water. The flush valve is provided with a first water outlet and a second water outlet. A negative pressure chamber is provided inside the flush valve, which is connected to the second water outlet. A water sealing ring is provided on a water path connected to the inner cavity of the water tank and the first water outlet. The water control component is used to automatically or manually control the sealing or conduction of the water path at the water sealing ring. When the water control component is in a conducting state, water can flow out through the water sealing ring and the first water outlet for flushing; when the water control component is in a sealed state, water is sealed in the water tank and will not flow out. When flushing is required, the water pump works, the water in the negative pressure chamber is sucked away, and negative pressure is formed. The water control component automatically sets the water path at the water sealing ring to a conducting state, and water flows out from the inner cavity of the water tank through the water sealing ring and the first water outlet for flushing. The greater the negative pressure, the greater the amount of flushing. In the event of a power outage or other special circumstances, the water control component can be manually operated to set the water path at the water sealing ring to a conducting state, and water flows out directly through the water sealing ring and the first water outlet for flushing. At this time, the water pump does not work, but the system can still guarantee the basic flushing function. Through the cooperation of the water pump and the flushing valve, the optimization and supplement of the flushing volume are achieved. In the event of a power outage or other special circumstances, the basic flushing function can still be guaranteed. The system has a simple structure and is easy to install and maintain. Through reasonable design, the waste of water resources is reduced, meeting the requirements of energy conservation and environmental protection.

[0007] Optionally, the flushing valve includes a valve seat and a valve cover, the valve seat is fastened to the bottom plate of the water tank by a nut, the first water outlet is arranged in the valve seat and extends outside the water tank, the valve cover is sealingly connected to the upper end of the valve seat, the negative pressure chamber is formed between the valve cover and the valve seat, the second water outlet is arranged on the side wall of the valve cover, the side wall of the valve seat is provided with a side hole connected to the inner cavity of the water tank, the water sealing ring is arranged on the inner wall of the valve seat and is located at the upper end of the first water outlet, and the water control component is located on the inner side of the valve seat.

[0008] Optionally, the water control component includes a valve stem, a return spring, a sealing gasket and a U-shaped pressure plate, the pressure plate is arranged around the valve stem, and the bottom of the pressure plate is provided with a water hole connected to the negative pressure chamber and the side hole, the sealing gasket is arranged at the bottom of the pressure plate, the upper end of the valve stem is slidably connected to the inner wall of the valve cover, the valve cover is provided with an atmospheric hole connected to the atmosphere, the return spring is located in the negative pressure chamber, one end of the return spring acts on the inner wall of the valve cover, and the other end acts on the top wall of the pressure plate, and the pressure plate constitutes a water control component that automatically or manually controls the sealing or conduction of the water channel at the water sealing ring under the joint action of atmospheric pressure, the pressure in the negative pressure chamber and the return spring.

[0009] Optionally, a first sealing ring is embedded on the side wall of the valve stem, a first downward extending tube is provided on the inner top wall of the valve cover, the first extending tube is slidably sleeved with the valve stem, and the first sealing ring is pressed between the first extending tube and the valve stem.

[0010] Optionally, a second sealing ring is pressed between the valve cover and the valve seat, and a fourth sealing ring is pressed between the valve seat and the bottom plate.

[0011] Optionally, a second upward extension tube is provided on the top of the valve cover, the upper end of the second extension tube is closed, a large air hole is opened on the top of the second extension tube, the upper end of the valve stem is slidably sleeved in the second extension tube, a third sealing ring is embedded in the top side wall of the valve stem, and a water inlet pipe which is higher than the liquid level in the water tank is provided on the side wall of the second extension tube, the water inlet of the water inlet pipe is connected to the water outlet end of the water pump, and a water outlet channel connected to the water inlet and the first water outlet is provided in the valve stem, and the water outlet channel is used to supplement the water output of the first water outlet.

[0012] Optionally, the top of the valve stem is closed, and the inner wall of the valve stem is provided with a water channel for connecting the water inlet and the water outlet.

[0013] Optionally, a pull wire is provided on the top of the valve stem to manually move the valve stem up and down, and the upper end of the pull wire extends to the outside of the water tank through a large air hole.

[0014] Optionally, an upward exhaust port is provided on the side wall of the water inlet pipe, and the exhaust port is connected to the float valve in the toilet via a thin tube.

[0015] Optionally, the float valve is installed on the bottom plate of the water tank, and the bottom plate is provided with an assembly port adapted to the float valve. The float valve is provided with a water inlet hole and a water outlet hole, and the water outlet hole is connected to the inner cavity of the water tank.

[0016] The utility model has the beneficial effects:

[0017] 1. In the utility model, the optimization and supplement of flushing water volume are realized through the cooperation of water pump and flushing valve. In the case of power outage or other special circumstances, the basic flushing function can still be guaranteed. The system structure is simple and easy to install and maintain. Through reasonable design, the waste of water resources is reduced, which meets the requirements of energy conservation and environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the cross-sectional structure after the flush valve and the water tank are assembled;

[0019] Figure 2 This is the structural diagram of the flushing system.

[0020] Figure markings: 01-first water outlet, 02-water outlet channel, 03-nut, 04-assembly port, 05-water hole, 06-side hole, 07-pressure plate, 08-second sealing ring, 09-valve cover, 10-reset spring, 11-second water outlet, 12-water tank, 13-water inlet, 14-exhaust port, 15-water trough, 16-third sealing ring, 17-pull wire, 18-inner cavity of water tank, 19-first sealing ring, 20-negative pressure cavity, 21-sealing pad, 22-water sealing ring, 23-fourth sealing ring, 24-bottom plate, 25-valve seat, 26-water inlet, 27-float valve, 28-thin tube, 29-first extension tube, 30-flushing valve, 31-water inlet pipe, 32-water pump, 33-water outlet, 34-valve stem, 35-second extension tube, 36-large air hole. DETAILED DESCRIPTION

[0021] The present invention will be further described in detail below in conjunction with the embodiments and drawings, but the implementation manner of the present invention is not limited thereto.

[0022] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inside", "outside", "front", "back", "top", "bottom", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0023] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "open", "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] Example

[0025] A flushing system for a toilet includes a water tank 12 installed in the toilet and a water pump 32 arranged in an inner cavity 18 of the water tank, and also includes a flushing valve 30. The flushing valve 30 is provided with a first water outlet 01 and a second water outlet 11. A negative pressure chamber 20 connected to the second water outlet 11 is provided in the flushing valve 30. The second water outlet 11 is connected to the water inlet end of the water pump 32. A water sealing ring 22 and a water control component that automatically or manually controls the sealing or conduction of the water circuit at the water sealing ring 22 are formed on the water path connected to the inner cavity 18 of the water tank and the first water outlet 01.

[0026] In this embodiment, the water tank 12 is installed inside the toilet to store water required for flushing. The design of the water tank inner cavity 18 needs to ensure smooth storage and flow of water. The flush valve 30 is provided with a first water outlet 01 and a second water outlet 11. A negative pressure chamber 20 is provided inside the flush valve 30, and the negative pressure chamber 20 is connected to the second water outlet 11. A water sealing ring 22 is arranged on the water path connected to the water tank inner cavity 18 and the first water outlet 01. The water control component is used to automatically or manually control the sealing or conduction of the water path at the water sealing ring 22. When the water control component is in a conducting state, water can flow out through the water sealing ring 22 and the first water outlet 01 for flushing; when the water control component is in a sealed state, the water is sealed in the water tank 12 and will not flow out. When flushing is required, the water pump 32 works, the water in the negative pressure chamber 20 is sucked away, forming a negative pressure, and the water control component automatically sets the water path at the water sealing ring 22 to a conducting state, and water flows out from the water tank cavity 18 through the water sealing ring 22 and the first water outlet 01 to perform flushing. The greater the negative pressure, the greater the amount of flushing. In the event of a power outage or other special circumstances, the water control component can be manually operated to set the water path at the water sealing ring 22 to a conducting state, and water flows out directly through the water sealing ring 22 and the first water outlet 01 to perform flushing. At this time, the water pump 32 does not work, but the system can still guarantee the basic flushing function. Through the cooperation of the water pump 32 and the flushing valve 30, the optimization and supplement of the flushing volume are achieved. In the event of a power outage or other special circumstances, the basic flushing function can still be guaranteed. The system has a simple structure, is easy to install and maintain, and through reasonable design, reduces the waste of water resources, meeting the requirements of energy conservation and environmental protection.

[0027] Furthermore, the flushing valve 30 includes a valve seat 25 and a valve cover 09. The valve seat 25 is fastened to the bottom plate 24 of the water tank 12 by a nut 03. The first water outlet 01 is arranged in the valve seat 25 and extends to the outside of the water tank 12. The valve cover 09 is sealed and connected to the upper end of the valve seat 25. The negative pressure chamber 20 is formed between the valve cover 09 and the valve seat 25. The second water outlet 11 is arranged on the side wall of the valve cover 09. The side wall of the valve seat 25 is provided with a side hole 06 connected to the water tank cavity 18. The water sealing ring 22 is arranged on the inner wall of the valve seat 25 and is located at the upper end of the first water outlet 01. The water control component is located on the inner side of the valve seat 25.

[0028] Specifically, the flushing valve 30 includes a valve seat 25, a valve cover 09 and a water control component. The valve seat 25 is fastened to the bottom plate 24 of the water tank 12 by a nut 03 to ensure that the flushing valve 30 is firmly installed in the water tank 12. The first water outlet 01 is arranged inside the valve seat 25 and extends to the outside of the water tank 12, and is used to discharge the water in the water tank 12 for flushing. The second water outlet 11 is arranged on the side wall of the valve cover 09 and is connected to the water inlet end of the water pump 32, and is used for the water pump 32 to absorb water in the negative pressure chamber 20. A channel is provided so that a certain negative pressure is formed in the negative pressure chamber 20. The valve cover 09 is sealed and connected to the upper end of the valve seat 25, and a negative pressure chamber 20 is formed between the valve seat 25. The negative pressure chamber 20 is connected to the second water outlet 11. A side hole 06 is provided on the side wall of the valve seat 25. The side hole 06 is connected to the inner cavity 18 of the water tank to ensure that the water in the water tank 12 can be smoothly flushed out from the first water outlet 01. The water sealing ring 22 is arranged on the inner wall of the valve seat 25, located at the upper end of the first water outlet 01, and the water sealing ring The function of the ring 22 is to cooperate with the water control component to control the sealing or conduction of the water path. The water control component is located on the inner side of the valve seat 25, and can automatically or manually control the sealing or conduction of the water path at the water sealing ring 22. When the water control component is in a conducting state, water can flow out through the water sealing ring 22 and the first water outlet 01 for flushing; when the water control component is in a sealed state, the water is sealed in the water tank 12 and will not flow out. The flush valve 30 achieves precise control of the toilet flushing process through its unique structure and water control component. Whether it is normal flushing, manual flushing or replenishing flushing volume, it can ensure smooth and stable water flow, and at the same time ensure the sealing of each water outlet. The cooperation between the water sealing ring 22 and the water control component enables the flush valve 30 to open and close the water path as needed, thereby achieving the effect of water saving and energy saving. The flush valve 30 of this design is not only compact in structure, easy to install and maintain, but also powerful in function and flexible in use, and can meet the needs and scenarios of different users.

[0029] Furthermore, the water control component includes a valve stem 34, a return spring 10, a sealing gasket 21 and a U-shaped pressure plate 07. The pressure plate 07 is arranged around the valve stem 34, and the bottom of the pressure plate 07 is provided with a water hole 05 connected to the negative pressure chamber 20 and the side hole 06. The sealing gasket 21 is arranged at the bottom of the pressure plate 07. The upper end of the valve stem 34 is slidably connected to the inner wall of the valve cover 09. The valve cover 09 is provided with an atmospheric hole 36 connected to the atmosphere. The return spring 10 is located in the negative pressure chamber 20. One end of the return spring 10 acts on the inner wall of the valve cover 09, and the other end acts on the top wall of the pressure plate 07. Under the joint action of atmospheric pressure, the pressure in the negative pressure chamber 20 and the return spring 10, the pressure plate 07 constitutes a water control component that automatically or manually controls the sealing or conduction of the water path at the water sealing ring 22.

[0030] Specifically, the water control component is mainly composed of a valve stem 34, a reset spring 10, a sealing gasket 21 and a U-shaped pressure plate 07. The pressure plate 07 is arranged on the circumference of the valve stem 34, and a water hole 05 connected to the negative pressure chamber 20 and the side hole 06 is provided at the bottom thereof. The water hole 05 allows water to flow from the water tank cavity 18 into the negative pressure chamber 20 through the side hole 06. The aperture of the water hole 05 is small. The sealing gasket 21 is arranged at the bottom of the pressure plate 07 to form a seal between the pressure plate 07 and the valve seat 25 or the water sealing ring 22 to prevent water from leaking when not flushing. The upper end of the valve cover 09 is slidably connected to the inner wall of the valve cover 09, allowing the valve stem 34 to move up and down inside the valve cover 09. The sealing or conduction state between the pressure plate 07 and the water sealing ring 22 can be controlled by the up and down movement of the valve stem 34. The valve cover 09 is provided with an atmospheric hole 36 connected to the atmosphere, which is used to balance the pressure in the negative pressure chamber 20 when necessary, so that the pressure plate 07 can move under the combined action of the atmospheric pressure, the pressure in the negative pressure chamber 20 and the return spring 10. The return spring 10 is located in the negative pressure chamber 20, one end of which acts on the inner wall of the valve cover 09, and the other end of which acts on the inner wall of the valve cover 09. The end acts on the top wall of the pressure plate 07, and the elastic force of the return spring 10 can ensure that after the flushing is completed, the pressure plate 07 can automatically reset and return to the position sealed with the water sealing ring 22. During normal flushing, the water pump 32 works to suck away the water in the negative pressure chamber 20, so that a certain vacuum degree is formed in the negative pressure chamber 20. The sum of the pressure in the negative pressure chamber 20, the elastic force of the return spring 10 and the atmospheric pressure is less than the water pressure on the bottom of the pressure plate 07. At this time, the pressure plate 07 moves up and compresses the return spring 10. The water path at the water sealing ring 22 is connected, and the water in the water tank 12 is Water enters the first water outlet 01 through the side hole 06, and the toilet starts to flush. When the water pump 32 is working, the pressure in the negative pressure chamber 20 drops, forming a negative pressure, which helps to absorb water from the water tank cavity 18 through the water hole 05. After the flushing is completed, the water pump 32 stops, and the water in the water tank 12 enters the negative pressure chamber 20 through the water hole 05. The pressure in the negative pressure chamber 20 increases, and the sum of the pressure in the negative pressure chamber 20, the elastic force of the return spring 10 and the atmospheric pressure is greater than the water pressure on the bottom of the pressure plate 07. At this time, the pressure plate 07 moves down and compresses and seals the water channel at the water sealing ring 22.

[0031] Furthermore, a first sealing ring 19 is embedded on the side wall of the valve stem 34 , and a downward first extension tube 29 is provided on the inner top wall of the valve cover 09 . The first extension tube 29 is slidably connected with the valve stem 34 , and the first sealing ring 19 is pressed between the first extension tube 29 and the valve stem 34 .

[0032] Specifically, the first sealing ring 19 is embedded in the side wall of the valve stem 34 and is usually made of rubber or similar materials to ensure a good seal between the valve stem 34 and the first extension tube 29. The first extension tube 29 is a tubular structure extending downward from the inner top wall of the valve cover 09, and is slidably sleeved with the valve stem 34, which means that the valve stem 34 can move up and down inside the first extension tube 29 without generating excessive friction or leakage. When the valve stem 34 slides inside the first extension tube 29, the first sealing ring 19 is pressed between the first extension tube 29 and the valve stem 34. This pressing action forms a sealing interface to prevent water or other liquids from leaking from the gap between the valve stem 34 and the first extension tube 29. The design of the first sealing ring 19 and the first extension tube 29 ensures that the water control component is in the valve stem 34. It can still maintain its sealing performance when moving up and down, which is very important for preventing the water in the water tank 12 from leaking to the outside of the toilet when flushing is not needed. The material of the first sealing ring 19 is usually soft and wear-resistant, such as rubber or silicone. The choice of this material ensures that the sealing ring can maintain its elasticity and sealing performance after long-term use. The first sealing ring 19 is usually pre-embedded in the side wall of the valve stem 34, and then installed in conjunction with the first extension tube 29. During normal use, the first sealing ring 19 is generally not required to be maintained, but if the sealing ring is found to be damaged or aged during inspection, it should be replaced in time to ensure the sealing performance of the system. Through this design, the water control component can effectively prevent water leakage while ensuring the normal operation of the flushing system, thereby improving the overall performance and reliability of the toilet flushing system.

[0033] Furthermore, a second sealing ring 08 is pressed between the valve cover 09 and the valve seat 25 , and a fourth sealing ring 23 is pressed between the valve seat 25 and the bottom plate 24 .

[0034] Specifically, the second sealing ring 08 is located between the valve cover 09 and the valve seat 25. When the valve cover 09 and the valve seat 25 are connected by bolts or other fastening methods, the second sealing ring 08 is pressed between the two to form a sealing interface, which ensures that no leakage occurs at the connection between the valve cover 09 and the valve seat 25. The fourth sealing ring 23 is located between the valve seat 25 and the bottom plate 24. When the valve seat 25 is installed on the bottom plate 24 of the toilet tank 12, the fourth sealing ring 23 is pressed between them to form a sealing interface as well, which ensures that the water in the water tank 12 will not leak out from the gap between the valve seat 25 and the bottom plate 24. By arranging the second sealing ring 08 and the fourth sealing ring 23 between the valve cover 09 and the valve seat 25, and between the valve seat 25 and the bottom plate 24, respectively The sealing performance of the toilet flushing system has been greatly improved, which can not only prevent water from leaking when flushing is not needed, but also ensure the stability of water pressure and water volume during the flushing process, and improve the flushing effect. The second sealing ring 08 and the fourth sealing ring 23 are usually made of elastic materials such as rubber or silicone. These materials have good sealing performance and wear resistance, and can maintain a good sealing effect after long-term use. During installation, ensure that the second sealing ring 08 and the fourth sealing ring 23 are correctly placed and pressed to ensure their sealing performance. At the same time, during regular inspections, if the sealing ring is found to be damaged or aged, it should be replaced in time. The design of this sealing structure makes the toilet flushing system safer and more reliable during use, and also extends the service life of the system.

[0035] Furthermore, a second extension tube 35 pointing upward is provided on the top of the valve cover 09, the upper end of the second extension tube 35 is closed, and an air hole 36 is opened on the top of the second extension tube 35. The upper end of the valve stem 34 is slidably sleeved in the second extension tube 35, and a third sealing ring 16 is embedded in the top side wall of the valve stem 34. The side wall of the second extension tube 35 is provided with a water inlet pipe 31 which is higher than the liquid level of the water tank 12, and the water inlet 13 of the water inlet pipe 31 is connected to the water outlet end of the water pump 32. A water outlet channel 02 connected to the water inlet 13 and the first water outlet 01 is provided in the valve stem 34, and the water outlet channel 02 is used to supplement the water output of the first water outlet 01.

[0036] Specifically, the second extension tube 35 is located at the top of the valve cover 09, extending upward and closing its upper end. This structure provides a sliding space for the valve stem 34. The large air hole 36 is opened at the top of the second extension tube 35. The upper end of the valve stem 34 is slidably sleeved in the second extension tube 35, allowing the valve stem 34 to move up and down in the second extension tube 35. The third sealing ring 16 is embedded in the top side wall of the valve stem 34 and contacts the inner wall of the second extension tube 35. When the valve stem 34 slides in the second extension tube 35, the third sealing ring 16 ensures that no leakage occurs between the two. The water inlet pipe 31 is arranged on the side wall of the second extension tube 35, and its position is higher than the liquid level of the water tank 12. The water inlet 13 of the water inlet pipe 31 is connected to the water outlet end of the water pump 32, so as to provide additional water to the system when needed.

[0037] The water outlet channel 02 is located inside the valve stem 34 and is connected to the water inlet 13 and the first water outlet 01. When the valve stem 34 is in a specific position (such as during flushing), the water outlet channel 02 allows the water flowing in from the water inlet pipe 31 to flow to the first water outlet 01 through the valve stem 34, thereby replenishing the water output of the first water outlet 01. During normal flushing, the water pump 32 works, and the water cup in the negative pressure chamber 20 is sucked away to form a certain negative pressure. The pressure plate 07 drives the valve stem 34 to move upward, and the water path at the water sealing ring 22 between the side hole 06 and the first water outlet 01 is opened. The water in the water tank 12 flows out through the water sealing ring 22 and the first water outlet 01 for flushing. When the flushing volume needs to be supplemented, the water sucked away from the negative pressure chamber 20 by the water pump 32 The water is fed into the water outlet channel 02 in the valve stem 34 through the water inlet pipe 31, and then flows to the first water outlet 01, thereby increasing the total water volume of the flushing. After the flushing is completed, the water pump 32 stops, the reset spring 10 pushes the pressure plate 07 to reset, and the water sealing ring 22 is re-sealed to prevent water from continuing to flow out. By setting the water inlet pipe 31 and the water outlet channel 02, the toilet flushing system can provide additional flushing water volume when needed, thereby improving the flushing effect. The design of the third sealing ring 16 and the valve stem 34 ensures the sealing between the water inlet pipe 31 and the water outlet channel 02, thereby preventing water leakage. The design of the second extension tube 35 and the large air hole 36 allows the internal pressure of the system to be balanced when needed, thereby ensuring the smooth movement of the valve stem 34 and the pressure plate 07.

[0038] Furthermore, the top of the valve stem 34 is closed, and a water channel 15 for connecting the water inlet 13 and the water outlet channel 02 is provided on the inner wall of the valve stem 34.

[0039] Specifically, the top of the valve stem 34 is designed to be closed, which means that water will not flow in or out directly from the top of the valve stem 34. The water groove 15 is located on the inner side wall of the valve stem 34 and extends downward for a section. The water groove 15 is used to connect the water path between the water inlet 13 and the water outlet channel 02. When the water pump 32 is working, water flows in from the water inlet 13, passes through the water groove 15, and then flows to the water outlet channel 02, and finally reaches the first water outlet 01. The water inlet 13 is located at the second extension. The side wall of the extension tube 35 is higher than the liquid level of the water tank 12 and is connected to the water outlet end of the water pump 32. This can prevent the water in the water tank 12 from entering the water inlet pipe 31 and then flowing to the first water outlet 01 to cause the toilet to leak. The water outlet channel 02 is located inside the valve stem 34, one end of which is connected to the water inlet 13 through the water groove 15, and the other end is connected to the first water outlet 01. The water pump 32 starts working and pumps water from the water inlet 13. The water flows into the valve stem 34 through the water groove 15. Water finally flows to the first water outlet 01 through the water outlet channel 02, and flushes together with the water in the water tank 12. Since the top of the valve stem 34 is closed, and the third sealing ring 16 is embedded between the top side wall of the valve stem 34 and the inner wall of the second extension tube 35, the sealing between the valve stem 34 and the second extension tube 35 is ensured, and water leakage is prevented. By setting the water trough 15, the water connection between the water inlet 13 and the water outlet channel 02 is realized, so that the system can provide additional flushing volume when needed. The design of the closed top of the valve stem 34 and the third sealing ring 16 ensures the sealing of the system and prevents water leakage. The design of the valve stem 34 takes sealing and functionality into consideration. The water connection between the water inlet 13 and the water outlet channel 02 is realized through the water trough 15, providing the system with the ability to supplement the flushing volume. At the same time, the closed top of the valve stem 34 and the third sealing ring 16 ensure the sealing of the system and prevent water leakage.

[0040] Furthermore, a pull wire 17 is provided on the top of the valve stem 34 to manually move the valve stem 34 up and down, and the upper end of the pull wire 17 extends to the outside of the water tank 12 through the large air hole 36.

[0041] Specifically, the pull wire 17 is located at the top of the valve stem 34 and is connected to the valve stem 34. The pull wire 17 is used to manually control the up and down movement of the valve stem 34. The user can pull the pull wire 17 outside the water tank 12 to make the valve stem 34 move up and down inside the water tank 12, thereby controlling the flushing process. The air hole 36 is located at the upper end of the pull wire 17, passes through the wall of the water tank 12, and extends the pull wire 17 to the outside of the water tank 12. The air hole 36 ensures that the pull wire 17 will not be obstructed by water when passing through the wall of the water tank 12, and allows air to pass through to prevent negative pressure from being generated inside the water tank 12. When a power outage occurs, the water pump 32 When the water tank 12 cannot work and the user needs to flush, the user can pull the pull wire 17 outside the water tank 12 to move the valve stem 34 upward. The upward movement of the valve stem 34 will open the water path at the water sealing ring 22, allowing the water in the water tank 12 to flow out through the first water outlet 01 for flushing. After the flushing is completed, the user can loosen the pull wire 17, and the reset spring 10 will push the valve stem 34 to move downward, so that the water sealing ring 22 is re-closed to prevent water from continuing to flow out. By setting the pull wire 17 and the large air hole 36, the user can conveniently control the up and down movement of the valve stem 34 outside the water tank 12, thereby controlling the flushing process.

[0042] Furthermore, an upward exhaust port 14 is provided on the side wall of the water inlet pipe 31 , and the exhaust port 14 is connected to the float valve 27 in the toilet via a thin tube 28 .

[0043] Specifically, an upward exhaust port 14 is provided on the side wall of the water inlet pipe 31. The main function of the exhaust port 14 is to allow air to enter the water inlet pipe 31, thereby preventing negative pressure or vacuum from being generated during the process of pumping or replenishing water, and ensuring smooth water flow. The exhaust port 14 is connected to the float valve 27 in the toilet through a capillary tube 28. When water enters the water inlet pipe 31, water can be prevented from flowing out of the exhaust port 14 to the outside of the toilet.

[0044] Furthermore, the float valve 27 is installed on the bottom plate 24 of the water tank 12, and the bottom plate 24 is provided with an assembly port 04 adapted to the float valve 27. The float valve 27 is provided with a water inlet hole 26 and a water outlet hole 33, and the water outlet hole 33 is connected to the inner cavity 18 of the water tank.

[0045] Specifically, the float valve 27 is installed on the bottom plate 24 of the water tank 12. The bottom plate 24 is provided with an assembly port 04 adapted to the float valve 27 to ensure that the float valve 27 can be firmly installed on the bottom plate 24. The float valve 27 is provided with a water inlet hole 26, which is usually connected to a water inlet pipe 31 for supplying water to the water tank 12. The float valve 27 is also provided with a water outlet hole 33, which is connected to the inner cavity 18 of the water tank. Under normal circumstances, the water outlet hole 33 is However, when the water level in the water tank 12 drops to a certain level, the float valve 27 will automatically open the water outlet 33, allowing water to flow from the water inlet pipe 31 into the water tank 12, thereby replenishing the water. When the water level in the water tank 12 is normal, the float (or float ball) of the float valve 27 rises due to buoyancy, closing the water outlet 33 and preventing water from flowing from the water inlet pipe 31 into the water tank 12. When the water level in the water tank 12 drops (such as due to flushing), , the buoyancy of the float decreases, and the water outlet hole 33 of the float valve 27 opens automatically, allowing water to flow from the water inlet pipe 31 into the water tank 12 until the water level rises to a normal level again. Before installing the float valve 27, it should be ensured that the assembly port 04 on the bottom plate 24 is fully compatible with the size and shape of the float valve 27 to ensure the stability and sealing of the installation. During the installation process, attention should be paid to the directions of the water inlet hole 26 and the water outlet hole 33 of the float valve 27 to ensure that they can be correctly connected to the water inlet pipe 31 and the inner cavity 18 of the water tank. After the installation is completed, the float valve 27 should be tested to ensure that it can work normally and automatically open and close the water outlet hole 33 when the water level in the water tank 12 changes. The size of the float valve 27 (such as the diameter of the float, the diameter of the valve, etc.) should be selected and calculated according to the design of the water tank 12 and the performance of the water pump 32 to ensure that it can effectively control the water level in the water tank 12.

[0046] The above is only a preferred embodiment of the utility model and does not limit the utility model in any form. According to the technical essence of the utility model, within the spirit and principles of the utility model, any simple modification, equivalent replacement and improvement made to the above embodiment still falls within the protection scope of the technical solution of the utility model.

Claims

1. A flushing system for a toilet, comprising a water tank (12) installed in the toilet and a water pump (32) arranged in an inner cavity (18) of the water tank, characterized in that: The flushing valve (30) is also included. The flushing valve (30) is provided with a first water outlet (01) and a second water outlet (11). A negative pressure chamber (20) connected to the second water outlet (11) is provided in the flushing valve (30). The second water outlet (11) is connected to the water inlet end of a water pump (32). A water sealing ring (22) and a water control component for automatically or manually controlling the sealing or conduction of the water channel at the water sealing ring (22) are formed on the water channel connected to the water tank cavity (18) and the first water outlet (01).

2. A toilet flushing system according to claim 1, characterized in that: The flushing valve (30) comprises a valve seat (25) and a valve cover (09); the valve seat (25) is fastened to a bottom plate (24) of a water tank (12) by a nut (03); a first water outlet (01) is arranged in the valve seat (25) and extends to the outside of the water tank (12); the valve cover (09) is sealingly connected to the upper end of the valve seat (25); the negative pressure chamber (20) is formed between the valve cover (09) and the valve seat (25); a second water outlet (11) is arranged on a side wall of the valve cover (09); a side hole (06) connected to an inner chamber (18) of the water tank is provided on the side wall of the valve seat (25); a water sealing ring (22) is arranged on an inner wall of the valve seat (25) and is located at an upper end of the first water outlet (01); and a water control component is located on the inner side of the valve seat (25).

3. A toilet flushing system according to claim 2, characterized in that: The water control component comprises a valve stem (34), a return spring (10), a sealing gasket (21) and a U-shaped pressure plate (07). The pressure plate (07) is arranged in the circumference of the valve stem (34), and the bottom of the pressure plate (07) is provided with a water hole (05) connected to the negative pressure chamber (20) and the side hole (06). The sealing gasket (21) is arranged at the bottom of the pressure plate (07). The upper end of the valve stem (34) is slidably connected to the inner wall of the valve cover (09), and the valve cover (09) is provided with an atmospheric hole (36) connected to the atmosphere. The return spring (10) is located in the negative pressure chamber (20), one end of the return spring (10) acts on the inner wall of the valve cover (09), and the other end acts on the top wall of the pressure plate (07). Under the joint action of atmospheric pressure, the pressure in the negative pressure chamber (20) and the return spring (10), the pressure plate (07) forms a water control component that automatically or manually controls the sealing or conduction of the water path at the water sealing ring (22).

4. A toilet flushing system according to claim 3, characterized in that: A first sealing ring (19) is embedded in the side wall of the valve stem (34), and a first extending tube (29) is provided downwardly on the inner top wall of the valve cover (09). The first extending tube (29) is slidably sleeved with the valve stem (34), and the first sealing ring (19) is pressed between the first extending tube (29) and the valve stem (34).

5. A toilet flushing system according to claim 3, characterized in that: A second sealing ring (08) is pressed tightly between the valve cover (09) and the valve seat (25), and a fourth sealing ring (23) is pressed tightly between the valve seat (25) and the bottom plate (24).

6. A toilet flushing system according to claim 3, characterized in that: The top of the valve cover (09) is provided with a second extension tube (35) pointing upwards, the upper end of the second extension tube (35) is closed, an air hole (36) is opened at the top of the second extension tube (35), the upper end of the valve stem (34) is slidably sleeved in the second extension tube (35), the top side wall of the valve stem (34) is embedded with a third sealing ring (16), the side wall of the second extension tube (35) is provided with a water inlet pipe (31) higher than the liquid level of the water tank (12), the water inlet (13) of the water inlet pipe (31) is connected to the water outlet end of the water pump (32), and the valve stem (34) is provided with a water outlet channel (02) connected to the water inlet (13) and the first water outlet (01), and the water outlet channel (02) is used to supplement the water output of the first water outlet (01).

7. A toilet flushing system according to claim 6, characterized in that: The top of the valve stem (34) is closed, and a water channel (15) for connecting the water inlet (13) and the water outlet channel (02) is provided on the inner side wall of the valve stem (34).

8. A toilet flushing system according to claim 6, characterized in that: A pull wire (17) is provided at the top of the valve stem (34) for manually moving the valve stem (34) up and down, and the upper end of the pull wire (17) extends to the outside of the water tank (12) through the large air hole.

9. A toilet flushing system according to claim 6, characterized in that: An upwardly directed exhaust port (14) is provided on the side wall of the water inlet pipe (31), and the exhaust port (14) is connected to a float valve (27) in the toilet via a thin tube (28).

10. A toilet flushing system according to claim 9, characterized in that: The float valve (27) is mounted on a bottom plate (24) of the water tank (12); an assembly port (04) adapted to the float valve (27) is provided on the bottom plate (24); a water inlet hole (26) and a water outlet hole (33) are provided on the float valve (27); and the water outlet hole (33) is connected to the inner cavity (18) of the water tank.

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