Air-controlled water inlet valve for toilet and low water tank toilet

Abstract

The present invention discloses a pneumatically controlled water inlet valve for a toilet and a low-tank toilet, including a brush ring water inlet valve. The brush ring water inlet valve includes an air bag internally disposed therein, connected to an external inflatable structure via an inflation hole. The air bag includes an air release hole. The brush ring water inlet valve also includes an air release control structure that is controlled by changes in the liquid level within the toilet water tank and can act on the air release hole. The present invention utilizes an additional air release control structure to automatically release air from the air bag in the brush ring water inlet valve in response to changes in the liquid level within the toilet water tank during flushing, thereby closing the brush ring water inlet valve. This effectively avoids the problem of requiring a high air volume when using a small-hole air release mechanism, thereby reducing production and operating costs.

Description

Technical Field

[0001] The present invention relates to the technical field of toilets, and in particular to an air-controlled water inlet valve for toilets and a low water tank toilet. Background Art

[0002] Chinese document CN214884141U (application date: December 16, 2020) discloses a low water tank toilet. In this technical solution, the brush ring water inlet valve and the water tank drain valve are both air-controlled water valves. The controller is connected to the brush ring water inlet valve and the water tank drain valve through an air inlet pipe. The air inlet pipe can be connected to a manual or automatic or both manual and automatic controller to realize the air supply operation of the air inlet pipe to realize the control of the brush ring water inlet valve and the water tank drain valve. A deflation joint needs to be set on the air bag of the brush ring water inlet valve and the water tank drain valve. To ensure that the injected gas can be discharged, thereby preventing the brush ring water inlet valve and the water tank drain valve from continuously operating, an existing exhaust structure is to open a small exhaust hole in the airbag of the brush ring water inlet valve. When the brush ring water inlet valve needs to be opened, the controller continuously inflates the airbag of the brush ring water inlet valve to maintain the water flow state. When the brush ring water inlet valve does not need to be opened, the controller stops inflating the airbag of the brush ring water inlet valve, and the remaining gas in the airbag is discharged through the exhaust hole in the airbag, and the airbag is restored, thus returning the brush ring water inlet valve to a water-stopping state. However, this small hole exhaust structure causes the airbag to be simultaneously filled with air and exhausted, which requires a large amount of air to be inflated by the controller. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the present invention provides an air-controlled water inlet valve for a toilet, which mainly solves the technical problem that the existing air-controlled brush ring water inlet valve using small holes for exhaust has high requirements on the inflation volume.

[0004] To achieve the above object, the present invention is achieved through the following technical solutions:

[0005] When the air level in the toilet tank rises to above the preset water level line, the air float floats up and drives the air release lever to make the air release plug and the air release hole of the air bag fit together in a sealed manner; when the liquid level in the toilet tank rises to below the preset water level line, the air release float falls and drives the air release lever to move the air release plug away from the air release hole of the air bag.

[0006] Furthermore, a water inlet channel and a water outlet channel are provided in the brush ring water inlet valve, a water stop is provided between the water outlet of the water inlet channel and the water inlet of the water outlet channel, a back pressure cavity is formed on the back of the water stop, a drain hole is formed on the back pressure cavity, a drainage hole that can introduce water in the water inlet channel into the back pressure cavity is provided on the water stop between the back pressure cavity and the water inlet channel, and an air control component for switching the closed state of the back pressure cavity is also provided in the brush ring water inlet valve, the air control component includes an air bag and an elastic reset component for automatically resetting the air bag, an air cavity is formed inside the air bag, and the telescopic free end of the air bag A drain hole plug is provided on the top, which is arranged corresponding to the drain hole of the back pressure chamber. When the drain hole of the airbag is blocked and closed by the drain hole, air can be inflated from the inflation hole to the air cavity inside the airbag through the external inflation structure, thereby driving the drain hole plug away from the drain hole of the back pressure chamber. When the toilet is flushed and the liquid level in the water tank drops below the preset water level line for deflation, the deflation float falls and drives the deflation lever to move the deflation plug away from the drain hole of the airbag to deflate the airbag, thereby making the drain hole plug automatically block the drain hole of the back pressure chamber under the reset force of the elastic reset part to make the back pressure chamber airtight.

[0007] Furthermore, the water outlet of the water inlet channel and the water inlet of the water outlet channel are coaxially arranged in correspondence with each other.

[0008] Furthermore, a water outlet pipe is connected to the water outlet of the water outlet channel, and an ejector for flushing the brush ring is connected to the end of the water outlet pipe.

[0009] Furthermore, the external inflation structure connected to the airbag through the inflation hole is an electric pump and / or a manually press inflation structure.

[0010] Furthermore, a toilet tank water inlet valve is installed in the toilet tank, and the installation height of the deflation float on the brush ring water inlet valve in the toilet tank is slightly lower than the water inlet float on the toilet tank water inlet valve.

[0011] Furthermore, the toilet tank water inlet valve and the brush ring water inlet valve are integrated into an integrated air-controlled water inlet valve structure, so that the air-controlled water inlet valve structure can control the water inlet of the toilet tank through the toilet tank water inlet valve, and control the flushing of the toilet brush ring through the brush ring water inlet valve.

[0012] Based on the same inventive concept, the present invention also provides a low water tank toilet, comprising a water tank in which any of the above-mentioned air-controlled water inlet valves for toilets is installed.

[0013] The above technical solution has the following advantages or beneficial effects:

[0014] In the air-controlled water inlet valve and low water tank toilet for toilets described in the present invention, an air release hole is provided on the air bag of the brush ring water inlet valve, and an air release control structure is also provided on the brush ring water inlet valve. The air release control structure includes an air release lever connected to the brush ring water inlet valve and an air release float and an air release plug respectively connected to the two ends of the air release lever, and the air release plug is provided corresponding to the air release hole of the air bag, and the air bag is also connected to the external inflatable structure through the inflation hole. Under normal circumstances, the liquid level in the toilet water tank is high and can make the air release float of the air release control structure float up so that the air release plug on the other end of the air release lever blocks the air release hole of the air bag. Since there is no need to provide an exhaust hole structure on the air bag, when the air release plug blocks the air release hole of the air bag, the inside of the air bag is sealed. At this time, when it is necessary to open the brush ring water inlet When the valve is opened, it is only necessary to fill an appropriate amount of air into the airbag through the inflation hole through the external inflation structure. The gas filled in the airbag will remain in the airbag to keep the brush ring water inlet valve open to form a water-passing state. When the toilet is drained and the liquid level in the toilet tank is about to fall below the preset water level line for deflation, the deflation float of the deflation control structure will automatically fall so that the deflation plug is away from the deflation hole of the airbag, and the gas filled in the airbag will be discharged from the deflation hole to close the brush ring water inlet valve to form a water-stop state. Therefore, through the added deflation control structure, the airbag of the brush ring water inlet valve can be automatically controlled to deflate by the change of the liquid level in the toilet tank when the toilet is flushed, thereby closing the brush ring water inlet valve, effectively avoiding the problem of requiring a large amount of inflation due to the use of small holes for exhaust, which is beneficial to reducing production and use costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the air-controlled water inlet valve in the water-stop state according to an embodiment of the present invention.

[0016] Figure 2 It is a schematic diagram of the three-dimensional structure decomposition of an embodiment of the present invention.

[0017] Figure 3 It is a structural cross-sectional view of the air-controlled water inlet valve in the water-stop state according to an embodiment of the present invention.

[0018] Figure 4 It is a cross-sectional view of the structure of the air bag of the air-controlled water inlet valve after inflation according to an embodiment of the present invention.

[0019] Figure 5 It is a structural cross-sectional view of the air-controlled water inlet valve in the water-flowing state according to an embodiment of the present invention.

[0020] Figure 6 It is a schematic diagram of the three-dimensional structure of the air-controlled water inlet valve according to an embodiment of the present invention after the deflated float has fallen.

[0021] Figure 7 It is a structural cross-sectional view of the air-controlled water inlet valve according to an embodiment of the present invention after the deflation float of the air bag falls to open the deflation hole.

[0022] Figure 8 It is a structural cross-sectional view of the air-controlled water inlet valve according to an embodiment of the present invention when it returns to the water-stop state.

[0023] Description of labels:

[0024] 1. Brush ring water inlet valve, 2. Toilet tank water inlet valve, 11. Air bag, 12. Deflation control structure, 13. Water inlet channel, 14. Water outlet channel, 15. Water stop, 16. Back pressure chamber, 17. Elastic reset member, 18. Drain hole plug, 19. Water outlet pipe, 21. Water inlet float, 111. Inflating hole, 112. Deflation hole, 121. Deflation lever, 122. Deflation plug, 123. Deflation float, 151. Drainage hole, 161. Drain hole, 191. Ejector. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0027] Please refer to the attached Figure 1 To the attached Figure 8One embodiment of the present invention provides a pneumatically controlled water inlet valve for a toilet, which is installed in a toilet water tank and includes a brush ring water inlet valve 1. The brush ring water inlet valve 1 is provided with an air bag 11 connected to an external inflatable structure through an inflation hole 111. The air bag 11 is provided with an air release hole 112. The brush ring water inlet valve 1 is also provided with an air release control structure 12 that is controlled by changes in the liquid level in the toilet water tank and can act on the air release hole 112. The air release control structure 12 includes an air release lever 121, an air release plug 122, and an air release float 123. The air release float 123 is connected to the air release hole 112. At one end of the lever 121, the air release plug 122 is connected to the other end of the air release lever 121 and is arranged corresponding to the air release hole 112 of the air bag 11, so that when the liquid level in the toilet water tank rises to above the preset air release water level line, the air release float 123 floats up and drives the air release lever 121 to make the air release plug 122 and the air release hole 112 of the air bag 11 sealed together, and when the liquid level in the toilet water tank drops below the preset air release water level line, the air release float 123 falls and drives the air release lever 121 to make the air release plug 122 move away from the air release hole 112 of the air bag 11. It can be understood that in this embodiment, an air release hole 112 is provided on the air bag 11 of the brush ring water inlet valve 1, and an air release control structure 12 is also provided on the brush ring water inlet valve 1. The air release control structure 12 includes an air release lever 121 connected to the outer shell structure of the brush ring water inlet valve 1 and an air release float 123 and an air release plug 122 respectively connected to both ends of the air release lever 121, and the air release plug 122 corresponds to the air release hole 112 of the air bag 11. The airbag 11 is also connected to the external inflatable structure through the inflation hole 111. Under normal circumstances, the liquid level in the toilet tank is high and can make the deflation float 123 of the deflation control structure 12 float up to make the deflation plug 122 on the other end of the deflation lever 121 block the deflation hole 112 of the airbag 11. Since there is no need to open a small exhaust hole structure on the airbag 11, when the deflation plug 122 blocks the deflation hole 112 of the airbag 11, the inside of the airbag 11 is sealed. At this time, when it is necessary to open the brush ring water inlet valve 1, it is only necessary to fill an appropriate amount of air into the air bag 11 through the external inflation structure from the inflation hole 111. The gas filled in the air bag 11 will remain in the air bag 11 to keep the brush ring water inlet valve 1 open to form a water-passing state. When the toilet is drained and the liquid level in the toilet tank is about to reach below the preset deflation water level line, the deflation float 123 of the deflation control structure 12 will automatically fall so that the deflation plug 122 is away from the air bag 1. 1, the gas filled in the air bag 11 will be discharged from the air hole 112 to close the brush ring water inlet valve 1 to form a water-stop state. Therefore, through the added air release control structure 12, the air bag 11 of the brush ring water inlet valve 1 can be automatically controlled to release air according to the change of the liquid level in the toilet water tank when the toilet is flushed, thereby closing the brush ring water inlet valve 1, effectively avoiding the problem of requiring a large amount of inflation due to the use of small holes for exhaust, which is conducive to reducing production and use costs.

[0028] Please refer to the attached Figure 1 To the attached Figure 8 In one preferred embodiment, a water inlet channel 13 and a water outlet channel 14 are provided in the brush ring water inlet valve 1, and a water stop 15 is provided between the water outlet of the water inlet channel 13 and the water inlet of the water outlet channel 14. A back pressure cavity 16 is formed on the back of the water stop 15, and a drain hole 161 is formed on the back pressure cavity 16. A drainage hole 151 that can introduce water in the water inlet channel 13 into the back pressure cavity 16 is provided on the water stop 15 between the back pressure cavity 16 and the water inlet channel 13. The brush ring water inlet valve 1 is also provided with an air control component for switching the closed state of the back pressure cavity 16. The air control component includes an air bag 11 and an elastic reset component 17 for automatically resetting the air bag 11. An air cavity is formed inside the air bag 11, and the telescopic free end of the air bag 11 A drain hole plug 18 is provided on it corresponding to the drain hole 161 of the back pressure chamber 16, and when the drain hole 112 of the airbag 11 is blocked and closed by the drain hole 112, the external inflation structure can inflate the air cavity inside the airbag 11 from the inflation hole 111 to drive the drain hole plug 18 away from the drain hole 161 of the back pressure chamber 16, and when the toilet is flushed and the liquid level in the water tank drops below the preset water level line for deflation, the deflation float 123 falls and drives the deflation lever 121 to move the deflation plug 122 away from the drain hole 112 of the airbag 11 to deflate the airbag 11, and then the drain hole plug 18 automatically blocks the drain hole 161 of the back pressure chamber 16 under the reset force of the elastic reset member 17 to make the back pressure chamber 16 airtight.

[0029] Please refer to the attached Figure 1 , Attachment Figure 2 In one preferred embodiment, the water outlet of the water inlet channel 13 and the water inlet of the water outlet channel 14 are coaxially arranged inside and outside. In this embodiment, preferably, the water outlet of the water outlet channel 14 is connected to a water outlet pipe 19, and the end of the water outlet pipe 19 is connected to an ejector 191 for flushing the brush ring.

[0030] Please refer to the attached Figure 1 , Attachment Figure 2 In one preferred embodiment, the external inflatable structure connected to the airbag 11 through the inflation hole 111 is an electric pump and / or a manually press-type inflatable structure. Preferably, since the brush ring water inlet valve 1 is additionally provided with a deflation control structure 12 that is controlled by the change in the liquid level in the toilet water tank and can act on the deflation hole 112 on the airbag 11, the inflation amount requirement for the external inflatable structure is relatively low. The external inflatable structure only needs to provide a small amount of air to the airbag to open the brush ring water inlet valve 1. Therefore, when the external inflatable structure needs to be manually pressed, a manually press-type inflatable bag structure similar to inflating a balloon can be used to inflate the airbag 11 in the brush ring water inlet valve 1. Its structure is simple, easy to use and low in price.

[0031] Please refer to the attached Figure 1 , Attachment Figure 6 In one preferred embodiment, a toilet tank inlet valve 2 is installed in the toilet tank, and the installation height of the deflation float 123 on the brush ring inlet valve 1 in the toilet tank is slightly lower than the water inlet float 21 on the toilet tank inlet valve 2.

[0032] Please refer to the attached Figure 1 , Attachment Figure 2 , Attachment Figure 6 In one preferred embodiment, the toilet tank inlet valve 2 and the brush ring inlet valve 1 are integrated into an integrated pneumatically controlled inlet valve structure, so that the pneumatically controlled inlet valve structure can control both water inflow to the toilet tank through the toilet tank inlet valve 2 and flushing of the toilet brush ring through the brush ring inlet valve 1. The inlet float 21 of the toilet tank inlet valve 2 can automatically control water inflow to the toilet tank independently of the brush ring inlet valve 1. The overall structure of the toilet tank inlet valve 2 can refer to the conventional toilet tank inlet valve structure in the prior art. Its specific structure and principle are prior art and will not be elaborated here.

[0033] An embodiment of the present invention further provides a low water tank toilet, comprising a water tank in which the air-controlled water inlet valve for a toilet as described in any of the above embodiments is installed.

[0034] In addition, it can be understood that since the back pressure chamber 16 introduces the water flow in the water inlet channel 13 through the drainage hole 151 on the water stop 15, the drainage hole 151 has a small aperture and is a small hole for drainage. Figure 7 , Attachment Figure 8 As shown, when the toilet is flushed and the liquid level in the toilet tank drops below the preset water level line for deflation, although the deflation hole 112 of the airbag 11 opens quickly to deflate, causing the deflation hole plug 18 to quickly block the deflation hole 161 of the back pressure chamber 16 to seal the back pressure chamber 16, but since the back pressure chamber 16 needs a certain amount of time to completely introduce the water flow in the water inlet channel 13 through the small-aperture drainage hole 151 and then push the water stop 15 to seal and block the water outlet channel 14 to form a water-stop state, therefore, when the liquid level in the bucket tank drops to the preset water level line for deflation, causing the airbag 11 to deflate, the brush ring water inlet valve 1 has a certain delayed water flow effect, and will not be immediately closed to form a water-stop state as soon as the liquid level in the toilet tank drops to the preset water level line for deflation. By reasonably designing the small hole diameter of the drainage hole 151, the brush ring water inlet valve 1 can produce a delayed water flow effect of 2S to 3S.

[0035] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of the present invention. Therefore, all other embodiments obtained by those skilled in the art without making any creative work shall fall within the scope of protection of the present invention.

Claims

1. A pneumatically controlled water inlet valve for a toilet, installed in a toilet water tank, comprising a brush ring water inlet valve (1), wherein an air bag (11) is provided inside the brush ring water inlet valve (1) and is connected to an external inflatable structure through an inflation hole (111), and characterized in that: The air bag (11) is provided with an air release hole (112), and the brush ring water inlet valve (1) is also provided with an air release control structure (12) which is controlled by the change of the liquid level in the toilet water tank and can act on the air release hole (112). The air release control structure (12) includes an air release lever (121), an air release plug (122) and an air release float (123). The air release float (123) is connected to one end of the air release lever (121), and the air release plug (122) is connected to the other end of the air release lever (121) and is connected to the air bag (11). ) is provided correspondingly to the air leakage hole (112) of the air bag (11), so that when the liquid level in the toilet water tank rises to above the preset air leakage water level line, the air leakage float (123) floats up and drives the air leakage lever (121) to make the air leakage plug (122) and the air leakage hole (112) of the air bag (11) tightly fitted together, and when the liquid level in the toilet water tank drops below the preset air leakage water level line, the air leakage float (123) falls and drives the air leakage lever (121) to make the air leakage plug (122) away from the air leakage hole (112) of the air bag (11); The external inflation structure connected to the airbag (11) through the inflation hole (111) is an electric pump and / or a manually press inflation structure.

2. The air-controlled water inlet valve for a toilet according to claim 1, characterized in that: A water inlet channel (13) and a water outlet channel (14) are provided in the brush ring water inlet valve (1), a water stopper (15) is provided between the water outlet of the water inlet channel (13) and the water inlet of the water outlet channel (14), a back pressure cavity (16) is formed on the back of the water stopper (15), a water drain hole (161) is formed on the back pressure cavity (16), a drainage hole (151) capable of introducing water in the water inlet channel (13) into the back pressure cavity (16) is provided on the water stopper (15) between the back pressure cavity (16) and the water inlet channel (13), and an air control component for switching the closed state of the back pressure cavity (16) is also provided in the brush ring water inlet valve (1), the air control component comprises an air bag (11) and an elastic reset component (17) for automatically resetting the air bag (11), an air cavity is formed inside the air bag (11), and a retractable free end of the air bag (11) is provided with a The drain hole plug (18) is provided corresponding to the drain hole (161) of the back pressure chamber (16), and when the drain hole (112) of the air bag (11) is blocked and sealed by the drain plug (122), the external inflatable structure can inflate the air from the inflatable hole (111) to the air cavity inside the air bag (11), thereby driving the drain hole plug (18) away from the drain hole (161) of the back pressure chamber (16), and when the toilet is flushed, the water tank is filled with water. When the internal liquid level drops below the preset deflation water level line, the deflation float (123) falls and drives the deflation lever (121) to move the deflation plug (122) away from the deflation hole (112) of the airbag (11) to deflate the airbag (11), thereby causing the deflation hole plug (18) to automatically block the deflation hole (161) of the back pressure chamber (16) under the action of the reset force of the elastic reset member (17) to seal the back pressure chamber (16).

3. The air-controlled water inlet valve for a toilet according to claim 2, characterized in that: The water outlet of the water inlet channel (13) and the water inlet of the water outlet channel (14) are coaxially arranged inside and outside correspondingly.

4. The air-controlled water inlet valve for a toilet according to claim 3, characterized in that: The water outlet of the water outlet channel (14) is connected to a water outlet pipe (19), and the end of the water outlet pipe (19) is connected to an ejector (191) for flushing the brush ring.

5. The air-controlled water inlet valve for a toilet according to any one of claims 1 to 4, characterized in that: A toilet tank inlet valve (2) is installed in the toilet tank, and the installation height of the deflation float (123) on the brush ring inlet valve (1) in the toilet tank is slightly lower than the water inlet float (21) on the toilet tank inlet valve (2).

6. The air-controlled water inlet valve for a toilet according to claim 5, characterized in that: The toilet tank water inlet valve (2) and the brush ring water inlet valve (1) are integrated into an integrated pneumatically controlled water inlet valve structure, so that the pneumatically controlled water inlet valve structure can control the water inlet of the toilet tank through the toilet tank water inlet valve (2) and can also control the flushing of the toilet brush ring through the brush ring water inlet valve (1).

7. A low water tank toilet, characterized by: The utility model comprises a water tank, in which the air-controlled water inlet valve for a toilet according to any one of claims 1 to 6 is installed.

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