Closestool flushing system

Abstract

The utility model belongs to the technical field of closestools, and particularly relates to a closestool flushing system which comprises a water tank body, the water tank body is connected with a water inlet valve, and the water inlet valve is provided with an air isolation valve arranged on the outer side of the water tank body. The closestool flushing system has the effect of preventing water in the water tank body from being sucked back to the water supply pipeline due to the negative pressure of the water supply pipeline, and prevents the water in the water tank body from being sucked back to pollute a water source.

Description

Technical Field

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

[0002] Toilets are common bathroom products and are increasingly widely used in people's daily lives. Existing toilet water tanks are mostly divided into open water tanks and sealed water tanks. Regardless of the open water tank or the sealed water tank, the existing water inlet valves are mostly installed inside the open water tank or the sealed water tank.

[0003] For an open water tank, when the water inlet valve fails, the water in the water tank can overflow from the top of the water tank, and the water will not flood the water inlet valve. However, for a sealed water tank, when the water inlet valve fails, the water will fill the water tank and flood the water inlet valve. If negative pressure occurs in the water supply pipe at this time, the water inside the sealed water tank will be sucked back, polluting the water source inside the water supply pipe.

[0004] When negative pressure appears in the water supply pipe of a sealed water tank, how to prevent the water in the sealed water tank from being sucked back is an urgent problem to be solved. Utility Model Content

[0005] In order to solve the problems in the above-mentioned background technology, the utility model provides a toilet flushing system. When the water inlet valve fails, the water tank body is filled with water. If negative pressure appears in the water supply pipe at this time, the water inlet valve is no longer filled with water. The air isolation valve is in an open state when there is no water pressure, and the inside of the water inlet valve is connected with the outside world. When the air isolation valve is in the open state, the negative pressure inside the water inlet valve can be balanced, which has the effect of preventing the water inside the water tank body from being sucked back into the water supply pipe due to the negative pressure of the water supply pipe, thereby preventing the water in the water tank body from being sucked back into the water supply pipe and polluting the water source.

[0006] The utility model provides a toilet flushing system, comprising a water tank body, the water tank body is connected with a water inlet valve, and the water inlet valve is provided with an air isolation valve arranged outside the water tank body.

[0007] By adopting the above technical scheme, the air isolation valve is placed on the outside of the water tank body, and the water supply pipe supplies water to the inside of the water tank body through the water inlet valve. The air isolation valve is in a closed state under the action of the water pressure inside the water inlet valve. When the water level inside the water tank reaches the preset water level, the water inlet valve is closed. When the water inlet valve is closed, the inside of the water inlet valve is no longer filled with water, and the air isolation valve is in an open state. When the water inlet valve fails, the water tank body is filled with water. If negative pressure appears in the water supply pipe at this time, the water inlet valve is no longer filled with water, and the air isolation valve is in an open state without water pressure. The inside of the water inlet valve is connected with the outside world. When the air isolation valve is in an open state, the negative pressure inside the water inlet valve can be balanced, which has the effect of preventing the water inside the water tank body from being sucked back into the water supply pipe due to the negative pressure of the water supply pipe, thereby preventing the water in the water tank body from being sucked back into the water supply pipe and polluting the water source.

[0008] Furthermore, the water tank body is equipped with a water level detector and a breathable check valve.

[0009] By adopting the above technical scheme, the water level detector is used for the water level inside the water tank body. When the water level detector detects that the water level of the water tank body reaches a preset height, the water inlet valve is closed and the water supply to the water tank body is stopped. When the water level in the water tank body does not reach the preset height, the water inlet valve is opened to supply water to the inside of the water tank body. The air-permeable check valve is used to maintain the air pressure balance inside and outside the water tank body during the process of water inlet and water outlet of the water tank body. When the water fills the entire water tank body, the air-permeable check valve is closed and the inside of the water tank body is a sealed environment.

[0010] Furthermore, a first connecting pipe is connected to the bottom of the water tank body, the first connecting pipe is connected to a water pump, the water pump is connected to a second connecting pipe, the end of the second connecting pipe away from the water pump is connected to a tee, and the tee is connected to a side flushing pipe and a bottom flushing pipe.

[0011] By adopting the above technical solution, when it is necessary to flush the toilet, the water pump pumps water from the water tank body, and the water in the water tank body passes through the first connecting pipe, the water pump, and the tee and is discharged from the side flushing pipe and the bottom flushing pipe respectively to flush the toilet. After the toilet is flushed, the water pump stops working. When the water inlet valve fails and the water tank body is filled with water, the air-permeable check valve is closed, and under the action of the water pressure of the water supply pipeline, the water inside the water tank body passes through the first connecting pipe, the water pump, and the tee and overflows through the side flushing pipe and the bottom flushing pipe respectively.

[0012] During the flushing process of the toilet, the water pump provides power for the water in the water tank body. Compared with the existing open water tank gravity flushing, when the water in the water tank body overflows, the overflow is achieved through the bottom flush pipe and the side flush pipe, and there is no need to set an overflow port at the top. It can improve the flushing effect of the toilet while reducing the installation height of the water tank body, thereby saving space.

[0013] Furthermore, the position height of the tee is higher than the preset water level height inside the water tank body.

[0014] By adopting the above technical solution, the water supply pipe supplies water to the inside of the water tank body through the water inlet valve. When the water level detector detects that the water level reaches a preset height, the water inlet valve stops supplying water. At this time, the second connecting pipe is connected to the water tank body through the water pump and the first connecting pipe, and the water level in the second connecting pipe is consistent with the water level in the water tank body.

[0015] Furthermore, the position height of the tee is higher than the highest water storage height inside the toilet.

[0016] By adopting the above technical solution, when the toilet is blocked and filled with dirt, the liquid level in the bottom flush pipe and the side flush pipe is flush with the liquid level in the toilet, and the position height of the tee is higher than the liquid level inside the toilet, which can effectively reduce the possibility of dirt in the toilet flowing back into the water tank body.

[0017] Furthermore, a first valve capable of allowing liquid to flow in one direction is connected between the three-way connection and the second connecting pipe. The first valve is a one-way valve or a flap check valve.

[0018] By adopting the above technical solution, the first valve can only allow the water in the second connecting pipe to flow into the tee, and the water in the tee cannot flow back into the second connecting pipe. The first valve reduces the possibility of waste in the toilet flowing back into the water tank body, and at the same time can block the siphon phenomenon caused by the backflow of liquid in the bottom flush pipe and the side flush pipe.

[0019] Furthermore, a water supply pipe is connected between the water inlet valve and the tee.

[0020] By adopting the above technical solution, after the toilet is flushed, the water inlet valve supplies water to the inside of the water tank body, and at the same time the water supply pipe replenishes water to the bottom flush pipe and the side flush pipe, and the water flows into the inside of the toilet, achieving the effect of water sealing at the bottom of the toilet.

[0021] Furthermore, the water supply pipe is installed with a second valve that enables the liquid to flow in one direction, and the second valve is a one-way valve or a flap check valve.

[0022] By adopting the above technical solution, the second valve can only allow water in the water supply pipe to flow into the tee, and the water in the tee cannot flow back into the water supply pipe. The second valve reduces the possibility of waste in the toilet flowing back into the water supply pipe.

[0023] Furthermore, the water supply pipe is connected to an elbow pipe, and the elbow pipe is located at a height higher than the highest water storage height inside the toilet.

[0024] By adopting the above technical solution, when the toilet is blocked and filled with dirt, the elbow pipe is located higher than the liquid level inside the toilet, which can effectively reduce the possibility of dirt in the toilet flowing back into the water supply pipe.

[0025] Furthermore, the side flush pipe is equipped with a water volume regulating valve.

[0026] By adopting the above technical solution, the amount of side flushing water flowing out of the side flushing pipe is regulated by the water volume regulating valve, thereby reducing the possibility of splashing when flushing the side flushing pipe.

[0027] Furthermore, the water inlet valve is a water inlet valve with flow stabilization and filtering functions.

[0028] By adopting the above technical solution, the water pressure is stabilized when the water inlet valve supplies water to the inside of the water tank body and the impurities in the inlet water are filtered out.

[0029] Compared with the prior art, the beneficial effects of the utility model are:

[0030] (1) The air isolation valve is placed on the outside of the water tank body. The water supply pipeline supplies water to the inside of the water tank body through the water inlet valve. The air isolation valve is in a closed state under the action of the water pressure inside the water inlet valve. When the water volume inside the water tank reaches the preset water level, the water inlet valve is closed. After the water inlet valve is closed, the inside of the water inlet valve is no longer filled with water, and the air isolation valve is in an open state. When the water inlet valve fails, the water tank body is filled with water. If negative pressure appears in the water supply pipeline at this time, the water inlet valve is no longer filled with water. The air isolation valve is in an open state without water pressure, and the inside of the water inlet valve is connected to the outside world. When the air isolation valve is in an open state, the negative pressure inside the water inlet valve can be balanced, which has the effect of preventing the water inside the water tank body from being sucked back into the water supply pipeline due to the negative pressure of the water supply pipeline, thereby preventing the water in the water tank body from being sucked back into the water supply pipeline and polluting the water source.

[0031] (2) During the flushing process of the toilet, the water pump provides power for the water in the water tank body. Compared with the existing open water tank gravity flushing, when the water in the water tank body overflows, the overflow is achieved through the bottom flushing pipe and the side flushing pipe, and there is no need to set an overflow port on the top. This can improve the flushing effect of the toilet and reduce the installation height of the water tank body, thereby saving space.

[0032] (3) The first valve can only allow the water in the second connecting pipe to flow into the tee, and the water in the tee cannot flow back into the second connecting pipe. The first valve reduces the possibility of waste in the toilet flowing back into the water tank body, and at the same time can block the siphon phenomenon caused by the backflow of liquid in the bottom flush pipe and the side flush pipe.

[0033] (4) After the toilet is flushed, the water inlet valve supplies water to the inside of the water tank body, and at the same time, the water supply pipe supplies water to the bottom flush pipe and the side flush pipe, and the water flows into the inside of the toilet, which has the effect of achieving a water seal at the bottom of the toilet.

[0034] (5) The water volume regulating valve is used to adjust the side flushing water volume flowing out of the side flushing pipe to reduce the possibility of splashing when flushing the side flushing pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 This is a schematic diagram of the structure of Example 1 of the present application;

[0037] Figure 2 This is a schematic diagram of the structure of the water level detector in Example 1;

[0038] Figure 3 This is a schematic diagram of the structure of the first connecting pipe in Example 1;

[0039] Figure 4 This is a structural diagram of Example 2 of the present application.

[0040] Explanation of the accompanying drawings: 1. Water tank body; 11. Water level detector; 12. Air-permeable check valve; 2. Water inlet valve; 21. Air isolation valve; 3. First connecting pipe; 4. Water pump; 5. Second connecting pipe; 6. Tee; 61. Side flush pipe; 62. Bottom flush pipe; 63. First valve; 64. Water volume regulating valve; 7. Water supply pipe; 71. Second valve; 72. Elbow pipe. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the utility model.

[0042] The following is combined with Figure 1 To Attachment Figure 4 And specific embodiments describe the present invention in detail.

[0043] The embodiment of the present application discloses a toilet flushing system.

[0044] Example 1

[0045] like Figures 1 to 3 As shown, a toilet flushing system includes a water tank body 1, a water level detector 11 and a breathable check valve 12 are installed on the top of the water tank body 1, the water level detector 11 is used to detect the water level in the water tank body 1, and the breathable check valve 12 is used to maintain the air pressure balance inside and outside the water tank body 1 during the process of water inlet and outlet of the water tank body 1. When the water fills the entire water tank body 1, the breathable check valve 12 is closed, and the interior of the water tank body 1 is a sealed environment.

[0046] The top of the water tank body 1 is fixedly connected with a water inlet valve 2, on which an air isolation valve 21 is installed. The water inlet valve 2 is used to supply water to the inside of the water tank body 1, and the air isolation valve 21 is placed outside the water tank body 1. The water level detector 11 is electrically connected to the water inlet valve 2, and the water supply pipeline supplies water to the inside of the water tank body 1 through the water inlet valve 2. When the water level detector 11 detects that the water level of the water tank body 1 reaches a preset height, the water inlet valve 2 is closed, and the water supply to the water tank body 1 is stopped.

[0047] When the water supply pipe supplies water to the water tank body 1 through the water inlet valve 2, the air isolation valve 21 is in a closed state due to the water pressure inside the water inlet valve 2. When the water inlet valve 2 is closed, the inside of the water inlet valve 2 is no longer filled with water, and the air isolation valve 21 is in an open state.

[0048] The bottom of the side wall of the water tank body 1 is fixedly connected with a first connecting pipe 3, and the end of the first connecting pipe 3 away from the water tank body 1 is connected to a water pump 4, and the first connecting pipe 3 is connected to the water inlet of the water pump 4. The water outlet of the water pump 4 is connected to a second connecting pipe 5, and the end of the second connecting pipe 5 away from the water pump 4 is connected to a tee 6, and the height of the tee 6 is higher than the set water level inside the water tank body 1. One of the outlets of the tee 6 is connected to a side flush pipe 61, and the side flush pipe 61 is connected to the side of the toilet, and the other outlet of the tee 6 is connected to a bottom flush pipe 62, and the bottom flush pipe 62 is connected to the bottom of the toilet.

[0049] like Figures 1 to 3 As shown, the water supply pipeline supplies water to the inside of the water tank body 1 through the water inlet valve 2. When the water level detector 11 detects that the water level reaches a preset height, the water inlet valve 2 stops supplying water. At this time, the second connecting pipe 5 is connected to the water tank body 1 through the water pump 4 and the first connecting pipe 3, and the water level in the second connecting pipe 5 is consistent with the water level in the water tank body 1. When it is necessary to flush the toilet, the water pump 4 pumps water to the water tank body 1, and the water in the water tank body 1 passes through the first connecting pipe 3, the water pump 4, and the tee 6 and is discharged from the side flushing pipe 61 and the bottom flushing pipe 62 respectively to flush the toilet. After the toilet is flushed, the water pump 4 stops working. When the water level detector 11 detects that the water level in the water tank body 1 does not reach the preset height, the water supply pipeline supplies water to the water tank body 1 through the water inlet valve 2 until the water level in the water tank body 1 reaches the preset height.

[0050] When the water inlet valve 2 fails, the water inlet valve 2 continuously supplies water to the water tank body 1. When the water tank body 1 is full of water, the air-permeable check valve 12 is closed. Under the action of the water pressure in the water supply pipeline, the water inside the water tank body 1 passes through the first connecting pipe 3, the water pump 4, and the tee 6 and overflows through the side flushing pipe 61 and the bottom flushing pipe 62 respectively.

[0051] After the water inlet valve 2 fails, the water tank body 1 is filled with water. If negative pressure appears in the water supply pipe at this time, the water inlet valve 2 is no longer filled with water. The air isolation valve 21 is in an open state when there is no water pressure, and the inside of the water inlet valve 2 is connected to the outside. The air isolation valve 21 can balance the negative pressure inside the water inlet valve 2 in the open state, thereby preventing the water inside the water tank body 1 from being sucked back into the water supply pipe due to the negative pressure in the water supply pipe, thereby preventing the water in the water tank body 1 from being sucked back and polluting the water source.

[0052] During the process of flushing the toilet, the water pump 4 provides power for the water in the water tank body 1, and when the water in the water tank body 1 overflows, overflow is achieved through the bottom flush pipe 62 and the side flush pipe 61. Compared with the existing open water tank gravity flushing, there is no need to set an overflow port at the top, which can improve the flushing effect of the toilet while reducing the installation height of the water tank body 1, thereby saving space.

[0053] The height of the tee 6 is higher than the highest water storage height inside the toilet. When the toilet is blocked and filled with dirt, the liquid level in the bottom flush pipe 62 and the side flush pipe 61 is flush with the liquid level in the toilet. The height of the tee 6 is higher than the liquid level in the toilet, which can effectively reduce the possibility of dirt in the toilet flowing back into the water tank body 1.

[0054] A first valve 63 that enables liquid to flow in only one direction is connected between the water inlet end of the tee 6 and the second connecting pipe 5. The first valve 63 is a first one-way valve and may also be replaced by a flap check valve or other valves that enable liquid to flow in only one direction. The first valve 63 can only allow water in the second connecting pipe 5 to flow into the tee 6, and the water in the tee 6 cannot flow back into the second connecting pipe 5. The first valve 63 further reduces the possibility of waste in the toilet flowing back into the water tank body 1, and at the same time can block the siphon phenomenon caused by the backflow of liquid in the bottom flush pipe 62 and the side flush pipe 61.

[0055] A water volume regulating valve 64 is installed in the side flushing pipe 61 , and the water volume regulating valve 64 is used to regulate the amount of side flushing water flowing out of the side flushing pipe 61 , thereby reducing the possibility of splashing when flushing water in the side flushing pipe 61 .

[0056] The water inlet valve 2 is a water inlet valve 2 with flow stabilization and filtering functions, which has the effect of ensuring the stability of water pressure when the water inlet valve 2 supplies water to the inside of the water tank body 1 and the effect of filtering impurities inside the inlet water.

[0057] The water inlet valve 2 is connected to a water supply pipe 7, and one end of the water supply pipe 7 away from the water inlet valve 2 is connected to the tee 6. After the toilet is flushed, the water inlet valve 2 supplies water to the inside of the water tank body 1, and the water supply pipe 7 supplies water to the bottom flushing pipe 62 and the side flushing pipe 61, and the water flows into the inside of the toilet to achieve a water seal effect at the bottom of the toilet.

[0058] A second valve 71 is installed on the water supply pipe 7, which can allow liquid to flow in only one direction. The second valve 71 is a one-way valve, which can also be replaced by a flap check valve or other valves that can allow liquid to flow in only one direction. The second valve 71 can only allow water in the water supply pipe 7 to flow into the tee 6, and the water in the tee 6 cannot flow back into the water supply pipe 7. The second valve 71 further reduces the possibility of waste in the toilet flowing back into the water supply pipe 7.

[0059] The implementation principle of a toilet flushing system in Example 1 is as follows: the water supply pipeline supplies water to the inside of the water tank body 1 through the water inlet valve 2. When the water level detector 11 detects that the water level reaches a preset height, the water inlet valve 2 stops supplying water. When the toilet needs to be flushed, the water pump 4 pumps water from the water tank body 1. The water in the water tank body 1 passes through the first connecting pipe 3, the water pump 4, and the tee 6 and is discharged from the side flushing pipe 61 and the bottom flushing pipe 62 respectively to flush the toilet. After the toilet is flushed, the water pump 4 stops working.

[0060] When the water level detector 11 detects that the water level in the water tank body 1 has not reached the preset height, the water supply pipe supplies water to the water tank body 1 through the water inlet valve 2 until the water level in the water tank body 1 reaches the preset height. At the same time, the water supply pipe 7 replenishes water to the bottom flush pipe 62 and the side flush pipe 61, and the water flows into the inside of the toilet to seal the bottom of the toilet.

[0061] When the water inlet valve 2 fails, water is continuously supplied to the water tank body 1. When the water tank body 1 is filled with water, the air-permeable check valve 12 is closed, and the water inside the water tank body 1 overflows through the side flushing pipe 61 and the bottom flushing pipe 62 after passing through the first connecting pipe 3, the water pump 4, and the tee 6. If negative pressure occurs in the water supply pipeline at this time, the water inlet valve 2 is no longer filled with water, and the air isolation valve 21 is in an open state without water pressure. The inside of the water inlet valve 2 is connected to the outside world. The air isolation valve 21 can balance the negative pressure inside the water inlet valve 2 when it is open, thereby preventing the water inside the water tank body 1 from being sucked back into the water supply pipeline due to the negative pressure of the water supply pipeline.

[0062] Example 2

[0063] like Figure 4 As shown, the difference between this embodiment and embodiment 1 is that an elbow pipe 72 is installed on the water supply pipe 7, and the position height of the elbow pipe 72 is higher than the highest water storage height inside the toilet. When the toilet is blocked and filled with dirt, the position height of the elbow pipe 72 is higher than the liquid level inside the toilet, which can effectively reduce the possibility of dirt in the toilet flowing back into the water supply pipe 7.

[0064] The utility model is further described above with the help of specific embodiments, but it should be understood that the specific description here should not be construed as limiting the essence and scope of the utility model. Various modifications made to the above embodiments by ordinary technicians in this field after reading this specification are all within the scope of protection of the utility model.

Claims

1. A toilet flushing system, characterized in that: The invention comprises a water tank body (1), wherein the water tank body (1) is connected to a water inlet valve (2), wherein the water inlet valve (2) is provided with an air isolation valve (21) arranged outside the water tank body (1), and wherein the water tank body (1) is provided with a water level detector (11) and a breathable check valve (12). When the water fills the entire water tank body (1), the breathable check valve (12) is closed, and the interior of the water tank body (1) is a sealed environment.

2. A toilet flushing system according to claim 1, characterized in that: The bottom of the water tank body (1) is connected to a first connecting pipe (3), the first connecting pipe (3) is connected to a water pump (4), the water pump (4) is connected to a second connecting pipe (5), the end of the second connecting pipe (5) away from the water pump (4) is connected to a tee (6), and the tee (6) is connected to a side flushing pipe (61) and a bottom flushing pipe (62).

3. A toilet flushing system according to claim 2, characterized in that: The position height of the three-way connection (6) is higher than the preset water level height inside the water tank body (1).

4. A toilet flushing system according to claim 2, characterized in that: The position height of the three-way connection (6) is higher than the highest water storage height inside the toilet.

5. A toilet flushing system according to claim 2, characterized in that: A first valve (63) capable of allowing liquid to flow in one direction is connected between the three-way connection (6) and the second connecting pipe (5), and the first valve (63) is a one-way valve or a flap check valve.

6. A toilet flushing system according to claim 2, characterized in that: A water supply pipe (7) is connected between the water inlet valve (2) and the tee (6).

7. A toilet flushing system according to claim 6, characterized in that: The water supply pipe (7) is provided with a second valve (71) capable of enabling the liquid to flow in one direction, and the second valve (71) is a one-way valve or a flap check valve.

8. A toilet flushing system according to claim 6, characterized in that: The water supply pipe (7) is connected to an elbow pipe (72), and the elbow pipe (72) is located at a height higher than the highest water storage height inside the toilet.

9. A toilet flushing system according to claim 2, characterized in that: The side flush pipe (61) is equipped with a water volume regulating valve (64).

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