A toilet flushing system

Abstract

The utility model provides a kind of closestool flushing system, comprising: closestool, with bowl, the upper portion of bowl is equipped with upper flushing component, the lower portion of bowl is equipped with lower flushing component;Water tank, for storing cleaning water;Water pump, with water inlet and water outlet, the water inlet of water pump is connected with the inner chamber of water tank and communicates;Three-way, with import, first outlet, second outlet, the import of three-way is connected with the water outlet of water pump and communicates, the first outlet of three-way is connected with the upper flushing component of bowl and communicates, the second outlet of three-way is connected with the lower flushing component of bowl and communicates;First check valve, for preventing water in bowl from flowing back to water pump;Water pump outlet pipeline, one end is connected with the water outlet of water pump and communicates, other end is connected with the import of three-way and communicates, water pump outlet pipeline is equipped with anti-siphon mouth, anti-siphon mouth is connected with the air in the inner chamber of water tank and communicates.The scheme can effectively prevent the problem that sewage in bowl flows back into water tank due to siphon under the condition of bowl blockage, and the anti-backflow effect is more reliable.

Description

Technical Field

[0001] This utility model relates to a toilet flushing system. Background Technology

[0002] In existing toilet flushing systems that use a pump to draw water from a tank to flush the toilet bowl, when the bowl becomes clogged, the rising sewage may siphon back up to the pump and then into the tank. To prevent this backflow, a one-way valve is typically installed between the pump outlet and the toilet bowl's flushing inlet. This valve prevents the siphon backflow when the bowl is clogged. However, relying solely on a one-way valve to prevent backflow is not foolproof. If the valve malfunctions or fails to close properly, or if there is a seal problem, sewage can still siphon back into the tank, especially in cases where the tank and its outlet are positioned low. Utility Model Content

[0003] To solve the above-mentioned technical problems, the purpose of this utility model is to propose a toilet flushing system that can effectively prevent sewage in the toilet bowl from flowing back into the water tank due to siphon when the toilet bowl is blocked, and the anti-backflow effect is more reliable.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A toilet flushing system, comprising:

[0006] A toilet seat with a commode bowl, wherein the upper part of the commode bowl is provided with an upper flushing assembly and the lower part of the commode bowl is provided with a lower flushing assembly;

[0007] Water tank, used to store cleaning water;

[0008] A water pump has an inlet and an outlet, wherein the inlet of the water pump is connected to the inner cavity of the water tank;

[0009] The three-way valve has an inlet, a first outlet, and a second outlet. The inlet of the three-way valve is connected to the outlet of the water pump, the first outlet of the three-way valve is connected to the upper flushing assembly of the toilet bowl, and the second outlet of the three-way valve is connected to the lower flushing assembly of the toilet bowl.

[0010] A first check valve is used to prevent water in the toilet bowl from flowing back to the water pump;

[0011] The water pump outlet pipe has one end connected to the water pump outlet and the other end connected to the inlet of the tee. The water pump outlet pipe is equipped with an anti-siphon port, which is connected to the air inside the water tank.

[0012] In some preferred embodiments, an anti-siphon air supply pipe is also included, wherein the anti-siphon port is connected to the inner cavity of the water tank through the anti-siphon air supply pipe.

[0013] In some preferred embodiments, the water pump, tee, and anti-siphon air supply pipe are all located outside the water tank, and the water tank is provided with a perforation for the anti-siphon air supply pipe to pass through.

[0014] In some preferred embodiments, the water tank is provided with a connecting pipe that communicates with the perforation. A connector is fixed on the connecting pipe. A flow channel is provided inside the connector. One end of the flow channel is connected to the anti-siphon air supply pipe, and the other end is connected to the inner cavity of the water tank and is positioned above the working water level of the water tank.

[0015] In some preferred embodiments, the connector includes a fixedly connected C-shaped sleeve and a flow passage, wherein the C-shaped sleeve is elastically deformed and interference-fitted with the connecting pipe, and the flow passage is provided with a flow channel.

[0016] In some preferred embodiments, the flow passage includes a connecting post located within the C-shaped sleeve and an extension located outside the C-shaped sleeve. The inner cavity of the connecting post and the inner cavity of the extension form the flow channel. The end of the extension away from the connecting post opens downward toward the inner cavity of the water tank. The anti-siphon air supply pipe is connected to the connecting post.

[0017] In some preferred embodiments, the top of the water tank is provided with a horizontally arranged step, the perforation passes through the step vertically, an installation space is reserved below the step, and the connecting pipe is provided on the upper surface of the step and extends vertically upward.

[0018] In some preferred embodiments, the highest point of the water pump outlet pipe is higher than the water level line of the water seal in the toilet bowl, and the anti-siphon outlet is located at the highest point of the water pump outlet pipe.

[0019] In some preferred embodiments, the first check valve is located between the inlet of the tee and the outlet of the water pump; or, there are two first check valves, one of which is located between the first outlet of the tee and the upper flushing assembly, and the other is located between the second outlet of the tee and the lower flushing assembly.

[0020] In some preferred embodiments, a second one-way valve is provided at the anti-siphon port, the second one-way valve controlling the air in the water tank to enter the water pump outlet pipe in one direction through the anti-siphon port.

[0021] Compared with the prior art, the beneficial effects of this utility model include at least the following:

[0022] This invention features a first-level one-way valve to prevent water from flowing back into the water pump from the toilet bowl, providing a first layer of backflow prevention. Secondly, an anti-siphon port is installed on the water pump's outlet pipe, connecting it to the air inside the water tank. If a siphon occurs in the water pump-to-toilet pipe due to a blockage, air from the water tank can enter the pump's outlet pipe through the anti-siphon port, breaking the negative pressure in the water pump-to-toilet pipe and blocking the siphon, thus providing a second layer of backflow prevention. This invention, through its dual anti-backflow function, effectively prevents sewage from flowing back into the water tank due to siphoning in cases of toilet blockage, making the backflow prevention effect more reliable.

[0023] In addition, by connecting the anti-siphon inlet to the inner cavity of the water tank, a small portion of the water flowing out of the anti-siphon inlet can flow directly back into the water tank during rinsing. This eliminates the need for a one-way valve at the anti-siphon inlet to allow air to enter and prevent water from flowing out, thus reducing costs and simplifying the structure. Attached Figure Description

[0024] The accompanying drawings, which are provided to further illustrate the present invention and constitute a part of the present invention, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0025] in:

[0026] Figure 1 This is one of the perspective views of a toilet flushing system according to an embodiment of the present utility model;

[0027] Figure 2 This is a second perspective view of a toilet flushing system according to an embodiment of the present invention (the base of the cover above the water tank is hidden).

[0028] Figure 3 This is a third perspective view of a toilet flushing system according to an embodiment of the present invention (the base of the cover above the water tank is hidden).

[0029] Figure 4 This is a partial assembly drawing of a toilet flushing system according to an embodiment of the present invention;

[0030] Figure 5 yes Figure 4 A diagram from another angle;

[0031] Figure 6 This is one perspective view of a connector according to an embodiment of the present invention;

[0032] Figure 7 This is one of the exploded views of the connector of an embodiment of this utility model;

[0033] Figure 8 This is a second exploded view of the connector according to an embodiment of the present invention;

[0034] Figure 9 This is a cross-sectional view of a connector according to an embodiment of the present invention.

[0035] The attached figures are labeled as follows:

[0036] 10-Toilet seat; 11-Urine bowl; 111-Upper flush assembly; 112-Lower flush assembly; 12-Suit container;

[0037] 20-Water tank; 21-Connecting pipe; 22-Connector; 221-C-shaped socket; 222-Flow passage; 2221-Connecting column; 2222-Extension section; 23-Step; 231-Perforation; 24-Water tank outlet; 241-Water pump inlet pipe;

[0038] 30 - Water pump; 31 - Water pump inlet; 32 - Water pump outlet;

[0039] 40 - Tee; 41 - Tee entrance; 42 - First exit; 43 - Second exit;

[0040] 50 - First check valve;

[0041] 60 - Water pump outlet pipe; 61 - Anti-siphon inlet;

[0042] 70-Anti-siphon air supply tube;

[0043] 80-Cover plate base. Detailed Implementation

[0044] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0045] Please see Figures 1 to 9 This utility model provides a preferred embodiment of a toilet flushing system, including a toilet seat 10, a water tank 20, a water pump 30, a three-way valve 40, a first one-way valve 50, a water pump outlet pipe 60, an anti-siphon air supply pipe 70, and other components.

[0046] The toilet seat 10 has a toilet bowl 11. The upper part of the toilet bowl 11 is provided with an upper flushing assembly 111, and the lower part of the toilet bowl 11 is provided with a lower flushing assembly 112. The water flowing out from the upper flushing assembly 111 is used to flush the inner wall of the toilet bowl 11, and the water flowing out from the lower flushing assembly 112 is used to flush the bottom of the toilet bowl 11.

[0047] The water tank 20 is used to store cleaning water, and the bottom of the water tank 20 is provided with a water outlet 24;

[0048] The water pump 30 has an inlet 31 and an outlet 32, and the inlet 31 of the water pump 30 is connected to the inner cavity of the water tank 20.

[0049] The three-way valve 40 has an inlet 41, a first outlet 42, and a second outlet 43. The inlet 41 of the three-way valve 40 is connected to the outlet 32 ​​of the water pump 30. The first outlet 42 of the three-way valve 40 is connected to the upper flushing assembly 111 of the toilet bowl 11. The second outlet 43 of the three-way valve 40 is connected to the lower flushing assembly 112 of the toilet bowl 11.

[0050] The first check valve 50 is used to prevent water in the toilet bowl 11 from flowing back to the water pump 30;

[0051] One end of the water pump outlet pipe 60 is connected to the outlet 32 ​​of the water pump 30, and the other end is connected to the inlet 41 of the tee 40. The water pump outlet pipe 60 is equipped with an anti-siphon port 61 (see...). Figure 4 The anti-siphon port 61 is connected to the air inside the water tank 20.

[0052] In the above solution, on the one hand, a first one-way valve 50 is installed to prevent water in the toilet bowl 11 from flowing back to the water pump 30, thus providing the first layer of backflow prevention. On the other hand, an anti-siphon port 61 is installed on the water pump outlet pipe 60, connecting the anti-siphon port 61 to the air inside the water tank 20. Once a siphon occurs in the pipe from the water pump 30 to the toilet bowl 11 due to blockage of the toilet bowl 11, the air in the water tank 20 can enter the water pump outlet pipe 60 through the anti-siphon port 61, thereby breaking the negative pressure in the pipe from the water pump 30 to the toilet bowl 11 and blocking the siphon, thus providing the second layer of backflow prevention. Through this dual backflow prevention function, the problem of sewage in the toilet bowl 11 flowing back into the water tank 20 due to siphon in the event of blockage of the toilet bowl 11 can be effectively prevented, making the backflow prevention effect more reliable.

[0053] In addition, by connecting the anti-siphon port 61 to the inner cavity of the water tank 20, a small portion of the water flowing out of the anti-siphon port 61 can flow directly back into the water tank 20 during rinsing. This eliminates the need for a one-way valve at the anti-siphon port 61 to allow air to enter and prevent water from flowing out, thus reducing costs and simplifying the structure.

[0054] Preferably, in this embodiment, an anti-siphon air supply pipe 70 is also included, and the anti-siphon port 61 is connected to the inner cavity of the water tank 20 through the anti-siphon air supply pipe 70. The anti-siphon air supply pipe 70 is preferably made of silicone tubing.

[0055] In this embodiment, the water pump 30, the tee 40, and the anti-siphon air supply pipe 70 are all located outside the water tank 20. The water tank 20 is provided with a through hole 231 for the anti-siphon air supply pipe 70 to pass through, and the anti-siphon air supply pipe 70 extends into the inner cavity of the water tank 20 through the through hole 231. It can be understood that in other embodiments, the water pump 30 and the tee 40 can also be located inside the water tank 20. In this case, the anti-siphon air supply pipe 70 can be omitted, and the anti-siphon port 61 is located inside the water tank 20 and directly communicates with the inner cavity of the water tank 20. The water pump 30 and the tee 40 are located outside the water tank 20, which does not occupy the internal volume of the water tank 20. The water tank 20 can be designed to be smaller, and it is convenient to replace and repair the water pump 30.

[0056] In this embodiment, the water outlet 24 of the water tank is located at the bottom of the side wall of the water tank 20. A water pump inlet pipe 241 is connected to the water outlet 24 of the water tank. The water outlet 24 of the water tank is connected to the water inlet 31 of the water pump 30 through the water pump inlet pipe 241.

[0057] In order to fix the anti-siphon air supply pipe 70 that extends into the inner cavity of the water tank 20, in this embodiment, it is preferable to set a connecting pipe 21 that communicates with the perforation 231 in the water tank 20. A connector 22 is fixed on the connecting pipe 21. A flow channel is provided in the connector 22. One end of the flow channel is connected to the anti-siphon air supply pipe 70, and the other end is connected to the inner cavity of the water tank 20 and is positioned higher than the working water level of the water tank 20, thereby ensuring that the anti-siphon air supply pipe 70 is kept in communication with the air in the water tank 20 and is not blocked by the water in the water tank.

[0058] To simplify the connection structure between connector 22 and connecting pipe 21, see... Figures 6-9 In this embodiment, the connector 22 includes a fixedly connected C-shaped sleeve portion 221 and a flow passage portion 222. The C-shaped sleeve portion 221 is elastically deformed and interference-fitted with the connecting pipe 21, and the flow passage portion 222 has a flow channel inside. The fixed connection between the connector 22 and the connecting pipe 21 can be achieved by directly fitting the C-shaped sleeve portion 221 into the connecting pipe 21, which is simple in structure and easy to assemble.

[0059] For more details, see Figure 8 and Figure 9In this embodiment, the flow passage 222 includes a connecting post 2221 located within the C-shaped sleeve 221 and an extension section 2222 located outside the C-shaped sleeve 221. The inner cavity of the connecting post 2221 and the inner cavity of the extension section 2222 form a flow channel. The end of the extension section 2222 away from the connecting post 2221 opens downward toward the inner cavity of the water tank 20. The anti-siphon air supply pipe 70 is connected to the connecting post 2221. Air in the water tank 20 sequentially flows through the inner cavity of the extension section 2222, the inner cavity of the connecting post 2221, and the anti-siphon air supply pipe 70 to connect with the water pump outlet pipe 60. The end of the extension section 2222 away from the connecting post 2221 opens downward toward the inner cavity of the water tank 20, so that during the rinsing process, a small portion of the water flow can flow downward into the water tank 20 from the end of the extension section 2222 away from the connecting post 2221, thereby preventing backflow water from splashing randomly.

[0060] In this embodiment, the top of the water tank 20 is provided with a horizontally arranged step 23, and a through hole 231 extends vertically through the step 23. An installation space is reserved below the step 23 to facilitate the upward insertion of the anti-siphon air supply pipe 70 into the through hole 231. A connecting pipe 21 is located on the upper surface of the step 23 and extends vertically upward. This arrangement of the step 23, through hole 231, and connecting pipe 21 allows the anti-siphon air supply pipe 70 to be easily inserted into the water tank 20 from bottom to top.

[0061] In this embodiment, the highest point of the water pump outlet pipe 60 is higher than the water level line of the water seal in the toilet bowl 11, and the anti-siphon port 61 is located at the highest point of the water pump outlet pipe 60. This design can further reduce the risk of sewage backflow in the toilet bowl 11.

[0062] In this embodiment, two first one-way valves 50 are provided. One first one-way valve 50 is located between the first outlet 42 of the tee 40 and the upper flushing assembly 111, and the other first one-way valve 50 is located between the second outlet 43 of the tee 40 and the lower flushing assembly 112. It is understood that only one first one-way valve 50 can be provided, preferably located between the inlet 41 of the tee 40 and the outlet 32 ​​of the water pump 30, thus saving one first one-way valve. The first one-way valve 50 only allows cleaning water to flow unidirectionally from the water pump outlet pipe 60 into the toilet bowl 11.

[0063] In this embodiment, the toilet seat 10 has a cavity 12 at its rear. The water tank 20 is independently formed and installed in this cavity 12. The top opening of the cavity 12 is covered by a cover plate base 80. It is understood that the water tank 20 can also be integrally formed with the toilet seat 10. The water pump 30 and the tee 40 are also installed in the cavity 12, resulting in a compact overall structure and a simple appearance. The water tank 20 is also equipped with an inlet valve, which controls the replenishment of water to the tank 20.

[0064] In some other implementations, a second one-way valve (not shown) can be installed at the anti-siphon port 61. The second one-way valve is used to control the air in the water tank 20 to enter the water pump outlet pipe 60 in one direction through the anti-siphon port 61, while the water in the water pump outlet pipe 60 will not enter the water tank 20. This ensures that when the toilet is flushed, all the water drawn by the water pump 30 can be used to flush the toilet bowl, and no small part will flow back into the water tank 20 through the anti-siphon port 61. This results in a larger flushing volume and a better flushing effect.

[0065] Understandably, by setting an anti-siphon port 61 on the water pump outlet pipe 60, this utility model can also effectively prevent water in the water tank 20 from siphoning into the toilet bowl when there is negative pressure in the pipe between the water tank 20 and the toilet bowl 11, thus avoiding the waste of water resources.

[0066] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A toilet flushing system, characterized in that, include: A toilet seat with a commode bowl, wherein the upper part of the commode bowl is provided with an upper flushing assembly and the lower part of the commode bowl is provided with a lower flushing assembly; Water tank, used to store cleaning water; A water pump has an inlet and an outlet, wherein the inlet of the water pump is connected to the inner cavity of the water tank; The three-way valve has an inlet, a first outlet, and a second outlet. The inlet of the three-way valve is connected to the outlet of the water pump, the first outlet of the three-way valve is connected to the upper flushing assembly of the toilet bowl, and the second outlet of the three-way valve is connected to the lower flushing assembly of the toilet bowl. A first check valve is used to prevent water in the toilet bowl from flowing back to the water pump; The water pump outlet pipe has one end connected to the water pump outlet and the other end connected to the inlet of the tee. The water pump outlet pipe is equipped with an anti-siphon port, which is connected to the air inside the water tank.

2. The toilet flushing system according to claim 1, characterized in that, It also includes an anti-siphon air supply pipe, and the anti-siphon port is connected to the inner cavity of the water tank through the anti-siphon air supply pipe.

3. The toilet flushing system according to claim 2, characterized in that, The water pump, tee, and anti-siphon air supply pipe are all located outside the water tank, and the water tank is provided with a perforation for the anti-siphon air supply pipe to pass through.

4. The toilet flushing system according to claim 3, characterized in that, The water tank is equipped with a connecting pipe that communicates with the perforation. A connector is fixed on the connecting pipe. A flow channel is provided inside the connector. One end of the flow channel is connected to the anti-siphon air supply pipe, and the other end is connected to the inner cavity of the water tank and is positioned higher than the working water level of the water tank.

5. The toilet flushing system according to claim 4, characterized in that, The connector includes a fixedly connected C-shaped sleeve and a flow passage. The C-shaped sleeve is elastically deformed and fits into the connecting pipe with an interference fit. The flow passage is provided inside the flow passage.

6. The toilet flushing system according to claim 5, characterized in that, The flow passage includes a connecting post located inside the C-shaped sleeve and an extension section located outside the C-shaped sleeve. The inner cavity of the connecting post and the inner cavity of the extension section form the flow passage. The end of the extension section away from the connecting post opens downward toward the inner cavity of the water tank. The anti-siphon air supply pipe is connected to the connecting post.

7. The toilet flushing system according to claim 4, characterized in that, The top of the water tank is provided with a horizontal step, the perforation runs through the step from top to bottom, the bottom of the step is reserved for installation space, and the connecting pipe is provided on the upper surface of the step and extends vertically upward.

8. The toilet flushing system according to claim 1, characterized in that, The highest point of the water pump outlet pipe is higher than the water level line of the water seal in the toilet bowl, and the anti-siphon outlet is located at the highest point of the water pump outlet pipe.

9. The toilet flushing system according to claim 1, characterized in that, The first check valve is located between the inlet of the tee and the outlet of the water pump; or, there are two first check valves, one of which is located between the first outlet of the tee and the upper flushing assembly, and the other is located between the second outlet of the tee and the lower flushing assembly.

10. The toilet flushing system according to claim 1, characterized in that, A second one-way valve is provided at the anti-siphon port, which controls the air in the water tank to enter the water pump outlet pipe in one direction through the anti-siphon port.

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