Water inlet valve easy to maintain

Abstract

The utility model discloses a water inlet valve easy to maintain, and relates to the technical field of water inlet valves, the water inlet valve is provided with a water inlet and a water outlet, the water inlet and the water outlet are communicated through a water passing cavity in the water inlet valve, a filter screen is arranged in the water passing cavity, and one end of the water passing cavity extends to the top side of the water inlet valve to enable the top side of the water inlet valve to be open. A sealing cover is detachably arranged on the opening, and the sealing cover is used for sealing, blocking or opening the opening; a valve seat is further arranged on the water inlet valve, the water outlet is located in the valve seat so that water filtered by the filter screen can flow into the valve seat, a back pressure pad is further arranged in the valve seat and used for blocking or opening the water outlet, a valve deck is detachably arranged on the valve seat and used for blocking or opening the valve seat, and the back pressure pad is arranged on the valve deck so that when the valve seat is blocked, the back pressure pad can be used for blocking or opening the water outlet. When the valve cover is detached from the valve seat, the back pressure pad can be installed in the valve seat, or when the valve cover is detached from the valve seat, the back pressure pad can be taken out from the valve seat at the same time. The water inlet valve is simple and convenient to maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of water inlet valves, and particularly relates to a water inlet valve which is easy to maintain. Background Art

[0002] For the current bottom water inlet back pressure type water inlet valve capable of filtering, when the service life is too long, the back pressure pad of the water inlet valve will age, making the water stop insensitive, and the internal filter screen will be blocked after long-term use, reducing the water output of the water inlet valve. However, due to the complex installation of the current back pressure pad and the water inlet valve, and the current water inlet filter screen is installed in the water inlet pipe, it is troublesome to disassemble the back pressure pad and the filter screen of the current water inlet valve, which is not convenient for the maintenance of the water inlet valve. Content of the Utility Model

[0003] The purpose of the utility model is to provide a water inlet valve which is easy to maintain, overcome the above defects, and is convenient for disassembling the back pressure pad and the filter screen, and is convenient for the maintenance of the water inlet valve.

[0004] To achieve the above purpose, the solution of the utility model is as follows:

[0005] A water inlet valve which is easy to maintain is used in the water tank of a toilet. The water inlet valve has a water inlet, a water outlet and a water passing cavity. The water inlet and the water outlet are communicated through the water passing cavity. A barrel-shaped filter screen is arranged in the water passing cavity. The filter screen is used to filter the water flowing from the water inlet into the water passing cavity. One end of the water passing cavity extends to the top side of the water inlet valve, so that an opening is formed on the top side of the water inlet valve. A sealing cover is detachably arranged on the opening. The sealing cover is used to seal and block or open the opening. When the opening is opened, the filter screen can be taken out from the water passing cavity. A valve seat is also arranged on the water inlet valve. The water outlet is located in the valve seat, so that the water filtered by the filter screen flows into the valve seat. A back pressure pad is also arranged in the valve seat. The back pressure pad is used to block or open the water outlet. A valve cover is detachably arranged on the valve seat. The valve cover is used to block or open the valve seat. The back pressure pad is arranged on the valve cover. When the valve cover blocks the valve seat, the back pressure pad can be installed in the valve seat, or when the valve cover is removed from the valve seat, the back pressure pad can be taken out from the valve seat at the same time.

[0006] Further, the bottom of the sealing cover is connected to the filter screen, so that when the sealing cover is opened, the filter screen can be taken out from the water passing cavity.

[0007] Further, the bottom of the sealing cover is detachably connected to the filter screen.

[0008] Further, the filter screen divides the water passing cavity into a water inlet cavity inside the filter screen and a water outlet cavity outside the filter screen. The water inlet cavity is communicated with the water inlet, and the water outlet cavity is communicated with the water outlet, so that the water flowing into the water inlet cavity can pass through the side wall of the filter screen and then enter the water outlet cavity.

[0009] Furthermore, an outlet channel is also provided inside the water inlet valve. The water inlet end of the outlet channel is located inside the valve seat, and the water outlet end of the outlet channel is located on the top side of the valve seat. When the back pressure pad opens the water outlet, the water inlet end of the outlet channel communicates with the water outlet cavity. When the back pressure pad seals the water outlet, the water inlet end of the outlet channel is separated from the water outlet cavity. One side of the back pressure pad faces the water outlet and is used to seal the water outlet. The other side forms a back pressure cavity with the valve cover. The back pressure cavity communicates with the water outlet, so that the water flow in the water outlet cavity enters the back pressure cavity. A pressure relief channel is also provided on the valve cover. The pressure relief channel communicates with the back pressure cavity and is used to drain the water in the back pressure cavity into the water tank. A plugging member is also provided on the valve cover. The plugging member is used to plug or open the pressure relief channel. A floating bucket is also provided on the water inlet valve in a lifting manner. The floating bucket is connected to the plugging member. When the floating bucket rises, it drives the plugging member to plug the pressure relief channel. When the floating bucket descends, it drives the plugging member to open the pressure relief channel.

[0010] Furthermore, the water inlet valve has a water outlet pipe. The water outlet pipe is arranged at the water outlet end of the outlet channel. The water outlet end of the water outlet pipe is located outside the valve seat. When the back pressure pad opens the water outlet, the water flow enters the water outlet pipe from the water outlet end of the outlet channel and flows into the water tank from the water outlet pipe.

[0011] Furthermore, the water inlet end of the water outlet pipe is horizontally rotatably arranged on the water outlet end of the outlet channel so as to be able to horizontally swing on the valve seat.

[0012] Furthermore, the water outlet end of the water outlet pipe is higher than the highest water level line in the water tank.

[0013] Furthermore, the valve seat is provided with a first clamping portion, and the valve cover is provided with a second clamping portion. The second clamping portion is used to be clamped or disengaged from the first clamping portion. When clamped, the back pressure pad is hermetically installed in the valve seat. When disengaged, the valve cover opens and the back pressure pad can be taken out.

[0014] Furthermore, the second clamping portion is a strip-shaped clamping block that extends circumferentially along the outer wall of the valve cover. The first clamping portion is a strip-shaped clamping groove that extends circumferentially along the inner wall of the valve seat. The back pressure pad is arranged on the valve cover and is located at the end of the valve cover close to the valve seat. When installing the back pressure pad, the valve cover together with the back pressure pad is put into the valve seat, and the valve cover is rotated so that the strip-shaped clamping block rotates and is clamped into the strip-shaped clamping groove.

[0015] After adopting the above scheme, the beneficial effects of the present utility model are as follows:

[0016] When maintaining the filter screen of the present utility model, the sealing cover is opened, and then the filter screen is taken out from the water passing cavity, and maintenance can be carried out. When maintaining the back pressure pad, the valve cover is opened, and the back pressure pad can be taken out at the same time. It is convenient for the maintenance of the filter and the back pressure pad, and is also convenient for the cleaning of the water passing cavity and the inside of the valve seat. Therefore, the water inlet valve of the present utility model is simple and convenient to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 is Figure 1 a disassembled schematic diagram of;

[0019] Figure 3 is a partial cross-sectional view of the present utility model;

[0020] Figure 4 is a schematic diagram of the overall structure of another embodiment of the present utility model;

[0021] Figure 5 is a cross-sectional view of another embodiment of the present utility model;

[0022] Figure 6 is Figure 5 a partially enlarged view of.

[0023] Reference numeral description: 1, water inlet valve; 10, water inlet; 11, water outlet; 12, water passage cavity; 121, water inlet cavity; 122, water outlet cavity; 13, filter screen; 131, fixing rod; 14, sealing cover; 141, fixing groove; 15, valve seat; 151, first clamping portion; 16, valve cover; 161, second clamping portion; 17, back pressure pad; 18, back pressure cavity; 19, floating bucket; 20, water outlet channel; 21, water outlet pipe; 22, water inlet pipe; 23, water receiving device; 231, sleeve; 2311, water passage gap; 2312, notch; 232, water receiving groove. Detailed implementation manners

[0024] The following describes the present utility model in detail with reference to the accompanying drawings and specific embodiments.

[0025] As Figures 1 to 3 shown, the present utility model provides an easily maintainable water inlet valve 1, the water inlet valve 1 has a water inlet 10 and a water outlet 11, and the water inlet 10 and the water outlet 11 are conducted through a water passage cavity 12 in the water inlet valve 1.

[0026] Wherein, a barrel-shaped filter screen 13 is arranged in the water passage cavity 12, and the filter screen 13 is used for filtering the water flow flowing from the water inlet 10 into the water passage cavity 12. One end of the water passage cavity 12 extends to the top side of the water inlet valve 1, so that an opening is formed on the top side of the water inlet valve 1. A sealing cover 14 is detachably arranged on the opening, and the sealing cover 14 is used for sealing and plugging or opening the opening, so that when the opening is opened, the filter screen 13 can be taken out from the water passage cavity 12;

[0027] A valve seat 15 is also provided on the water inlet valve 1. The water outlet 11 is located within the valve seat 15 so that the water filtered by the filter screen 13 flows into the valve seat 15. A back-pressure pad 17 is also provided within the valve seat 15. The back-pressure pad 17 is used to block or open the water outlet 11. A valve cover 16 is detachably provided on the valve seat 15. The valve cover 16 is used to block or open the valve seat 15. The back-pressure pad 17 is provided on the valve cover 16 so that when the valve cover 16 blocks the valve seat 15, the back-pressure pad 17 can be installed within the valve seat 15, or when the valve cover 16 is removed from the valve seat 15, the back-pressure pad 17 can be taken out of the valve seat 15 simultaneously;

[0028] When maintaining the filter screen 13, open the sealing cover 14, and then take out the filter screen 13 from the water passing cavity 12 to perform the maintenance. When maintaining the back-pressure pad 17, open the valve cover 16, and then the back-pressure pad 17 can be taken out simultaneously, which is convenient for the maintenance of the filter screen 13 and the back-pressure pad 17, and also convenient for the cleaning of the water passing cavity 12 and the valve seat 15. Therefore, the water inlet valve 1 of the present utility model is simple and convenient to maintain;

[0029] Specifically, the water inlet valve 1 has a water inlet pipe 22. The water inlet 10 is located at the water outlet end of the water inlet pipe 22. The water passing cavity 12 and the water inlet pipe 22 are conducted through the water inlet 10. Specifically, the water inlet end of the water inlet pipe 22 is located at the bottom end of the water inlet pipe 22 and is connected to the domestic water network. The water outlet end of the water inlet pipe 22 is located at the top end of the water inlet pipe 22. The water passing cavity 12 is located at the top end of the water inlet pipe 22;

[0030] Further, the bottom of the sealing cover 14 is connected to the filter screen 13 so that when the sealing cover 14 is opened, the filter screen 13 can be taken out from the water passing cavity 12;

[0031] Further, the bottom of the sealing cover 14 is detachably connected to the filter screen 13 to facilitate the disassembly and installation of the sealing cover 14 and the filter screen 13. Specifically, the barrel opening of the barrel-shaped filter screen 13 is communicated with the water inlet 10. A fixing rod 131 is provided on the barrel bottom of the barrel-shaped filter screen 13. A fixing groove 141 is provided at the bottom of the sealing cover 14. The fixing rod 131 can be inserted into or pulled out of the fixing groove 141 to detachably connect the filter screen 13 to the sealing cover 14.

[0032] Specifically, the filter screen 13 divides the water passing cavity 12 into an inlet cavity 121 inside the filter screen 13 and an outlet cavity 122 outside the filter screen 13. The inlet cavity 121 communicates with the water inlet 10, and the outlet cavity 122 communicates with the water outlet 11, so that the water flowing into the inlet cavity 121 can pass through the side wall of the filter screen 13 and then enter the outlet cavity 122. Specifically, the shape of the water passing cavity 12 is "T-shaped" and has three ports. One port extends to the top side of the inlet valve 1 and forms an opening on the top side of the inlet valve 1. The filter screen 13 is placed into the water passing cavity 12 from the opening on the top side of the inlet valve 1. Another port is the water inlet 10 and is in communication with the inlet cavity 121. The other port is the water outlet 11 and is located inside the valve seat 15.

[0033] Specifically, an outlet channel 20 is further provided inside the inlet valve 1. The water inlet end of the outlet channel 20 is located inside the valve seat 15, and the water outlet end of the outlet channel 20 is located on the top side of the valve seat 15. When the back pressure pad 17 opens the water outlet 11, the water inlet end of the outlet channel 20 is in communication with the outlet cavity 122. When the back pressure pad 17 blocks the water outlet 11, the water inlet end of the outlet channel 20 is separated from the outlet cavity 122. One side of the back pressure pad faces the water outlet 11 and is used to block the water outlet 11. The other side forms a back pressure cavity 18 with the valve cover 16. The back pressure cavity 18 communicates with the water outlet 11, so that the water flow in the outlet cavity 122 enters the back pressure cavity 18. A pressure relief channel 152 is further provided on the valve cover 16, and the pressure relief channel 152 communicates with the back pressure cavity 18 to drain the water in the back pressure cavity 18 into the water tank. A blocking member is further provided on the valve cover 16, and the blocking member is used to block or open the pressure relief channel 152. A floating bucket 19 is further provided on the inlet valve 1 in a lifting manner. The floating bucket 19 is connected to the blocking member, so that when the floating bucket 19 rises, it drives the blocking member to block the pressure relief channel 152, and when the floating bucket 19 descends, it drives the blocking member to open the pressure relief channel 152.

[0034] Specifically, the inlet valve 1 has a water outlet pipe 21. The water outlet pipe 21 is provided at the water outlet end of the outlet channel 20, and the water outlet end of the water outlet pipe 21 is located outside the valve seat 15. When the back pressure pad 17 opens the water outlet 11, the water flow enters the water outlet pipe 21 from the water outlet end of the outlet channel 20 and flows into the water tank from the water outlet pipe 21.

[0035] Specifically, the water inlet end of the water outlet pipe 21 is horizontally rotatably arranged on the water outlet end of the water outlet channel 20 so as to be able to horizontally swing on the valve seat 15. When installing the inlet valve 1 into the water tank, by swinging the water outlet pipe 21, the narrow space inside the water tank can be reasonably utilized to prevent affecting other components inside the water tank, and the water outlet pipe 21 can be swung so that the water flow can avoid the inlet valve 1 and flow into the water tank. Moreover, the water outlet end of the water outlet pipe 21 is located above the highest water level line inside the water tank to prevent the occurrence of siphon phenomenon; specifically, the water inlet end of the water outlet pipe 21 is detachably clamped on the water outlet end of the water outlet channel 20 so as to be able to detach the water outlet pipe 21 for convenient maintenance or replacement of the water outlet pipe 21;

[0036] Further, the valve seat 15 is provided with a first clamping portion 151, and the valve cover 16 is provided with a second clamping portion 161. The second clamping portion 161 is used for clamping or loosening with the first clamping portion 151. When clamping, the back pressure pad 17 is installed inside the valve seat 15, or when disengaging, the valve cover 16 is opened and the back pressure pad 17 can be taken out;

[0037] Specifically, a guide post is provided on one side of the valve cover 16 facing the valve seat 15, and the back pressure pad 17 is sleeved on the guide post so that when the valve cover 16 is detached by disengaging the first clamping portion 151 and the second clamping portion 161, the back pressure pad 17 can be taken out at the same time;

[0038] Specifically, the second clamping portion 161 is a strip-shaped clamping block that extends circumferentially along the outer wall of the valve cover 16, and the first clamping portion 151 is a strip-shaped clamping groove that extends circumferentially along the inner wall of the valve seat 15. The back pressure pad 17 is arranged on the valve cover 16 and is located at one end of the valve cover 16 close to the valve seat 15. When installing the back pressure pad 17, the valve cover 16 together with the back pressure pad 17 is placed into the valve seat 15, and the valve cover 16 is rotated so that the strip-shaped clamping block is rotated and clamped into the strip-shaped clamping groove;

[0039] Specifically, there are two strip-shaped clamping blocks, and there is a gap between the two strip-shaped clamping blocks. There are also two strip-shaped clamping grooves, and there is a gap between the two strip-shaped clamping grooves. When placing the valve cover 16 into the valve seat 15, the strip-shaped clamping grooves are aligned with the gap between the two strip-shaped clamping blocks. When the valve cover 16 is placed in place, the valve cover 16 is rotated so that the two strip-shaped clamping blocks are respectively clamped into the two strip-shaped clamping grooves.

[0040] As Figures 4 to 6As shown, this is another embodiment of the present utility model. The difference from the previous embodiment is that the water outlet end of the water outlet channel 20 is located at the bottom side of the valve seat 15, and water flows out from the bottom side of the valve seat 15. The position where the water outlet pipe 21 was connected in the previous embodiment is blocked. A water receiving device 23 is provided below the water outlet end of the water outlet channel 20. The water receiving device 23 includes a water receiving tank 232 and a sleeve 231. The sleeve 231 is sleeved on the water inlet pipe 22 of the water inlet valve 1, and there is a water passing gap 2311 between the sleeve 231 and the water inlet pipe 22 of the water inlet valve 1. The water receiving tank 232 is located below the water outlet end of the water outlet channel 20 to catch the water flowing out from the water outlet channel 20, and the water receiving tank 232 is communicated with the water passing gap 2311 to introduce the water in the water receiving tank 232 into the water passing gap 2311. A notch 2312 is provided at the bottom of the sleeve 231, and the water in the water passing gap 2311 flows downward and finally flows into the water tank from the notch 2312.

[0041] To further illustrate the embodiments, the present invention provides drawings. These drawings are a part of the disclosure of the present invention, mainly used to illustrate the embodiments, and can be used to explain the operating principle of the embodiments in conjunction with the relevant descriptions in the specification. With reference to these contents, those of ordinary skill in the art should be able to understand other possible implementation manners and the advantages of the present invention. The components in the drawings are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0042] At the same time, the front, rear, left, right and other orientations involved in this embodiment are only for reference of an orientation and do not represent the orientation in actual use. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0043] The above is only the preferred embodiment of the present utility model, and does not limit the design of this case. All equivalent changes made according to the key design of this case fall within the protection scope of this case.

Claims

1. An easily maintainable water inlet valve, which is used to be arranged in the water tank of a toilet, and is characterized in that: The water inlet valve has a water inlet, a water outlet and a water passage cavity. The water inlet and the water outlet are communicated through the water passage cavity. A barrel-shaped filter screen is arranged in the water passage cavity. The filter screen is used to filter the water flowing from the water inlet into the water passage cavity. One end of the water passage cavity extends to the top side of the water inlet valve, so that an opening is formed on the top side of the water inlet valve. A sealing cover is detachably arranged on the opening. The sealing cover is used to seal or open the opening, so that when the opening is opened, the filter screen can be taken out of the water passage cavity. A valve seat is also arranged on the water inlet valve. The water outlet is located in the valve seat, so that the water filtered by the filter screen flows into the valve seat. A back pressure pad is also arranged in the valve seat. The back pressure pad is used to block or open the water outlet. A valve cover is detachably arranged on the valve seat. The valve cover is used to block or open the valve seat. The back pressure pad is arranged on the valve cover, so that when the valve cover blocks the valve seat, the back pressure pad can be installed in the valve seat, or when the valve cover is removed from the valve seat, the back pressure pad can be taken out of the valve seat at the same time.

2. The easy-to-maintain water inlet valve according to claim 1, wherein: The bottom of the sealing cover is connected to the filter screen, so that when the sealing cover is opened, the filter screen can be taken out of the water passage cavity.

3. The easy-to-maintain water inlet valve according to claim 2, wherein: The bottom of the sealing cover is detachably connected to the filter screen.

4. The easy-to-maintain water inlet valve according to claim 1, wherein: The filter screen divides the water passage cavity into a water inlet cavity inside the filter screen and a water outlet cavity outside the filter screen. The water inlet cavity is communicated with the water inlet, and the water outlet cavity is communicated with the water outlet, so that the water flowing into the water inlet cavity can pass through the side wall of the filter screen and then enter the water outlet cavity.

5. The easy-to-maintain water inlet valve according to claim 4, characterized in that: An outlet passage is also arranged in the water inlet valve. The water inlet end of the outlet passage is located in the valve seat, and the water outlet end of the outlet passage is located on the top side of the valve seat. When the back pressure pad opens the water outlet, the water inlet end of the outlet passage is communicated with the water outlet cavity. When the back pressure pad blocks the water outlet, the water inlet end of the outlet passage is separated from the water outlet cavity. One side of the back pressure pad faces the water outlet and is used to block the water outlet. The other side forms a back pressure cavity with the valve cover. The back pressure cavity is communicated with the water outlet, so that the water flow in the water outlet cavity enters the back pressure cavity. A pressure relief passage is also arranged on the valve cover. The pressure relief passage is communicated with the back pressure cavity and is used to discharge the water in the back pressure cavity into the water tank. A blocking member is also arranged on the valve cover. The blocking member is used to block or open the pressure relief passage. A floating bucket is also arranged on the water inlet valve in a lifting manner. The floating bucket is connected to the blocking member, so that when the floating bucket rises, it drives the blocking member to block the pressure relief passage, and when the floating bucket descends, it drives the blocking member to open the pressure relief passage.

6. The easy-to-maintain water inlet valve according to claim 5, characterized in that: The water inlet valve has a water outlet pipe. The water outlet pipe is arranged at the water outlet end of the outlet passage. The water outlet end of the water outlet pipe is located outside the valve seat. When the back pressure pad opens the water outlet, the water flow enters the water outlet pipe from the water outlet end of the outlet passage and flows into the water tank from the water outlet pipe.

7. The water inlet valve that is easy to maintain according to claim 6, characterized in that: The water inlet end of the water outlet pipe is horizontally rotatably arranged on the water outlet end of the outlet passage, so that it can swing horizontally on the valve seat.

8. The easy-to-maintain water inlet valve according to claim 7, characterized in that: The water outlet end of the water outlet pipe is higher than the highest water level line in the water tank.

9. The easy-to-maintain water inlet valve according to claim 1, characterized in that: The valve seat is provided with a first clamping portion, and the valve cover is provided with a second clamping portion. The second clamping portion is used to be clamped or disengaged from the first clamping portion, so that when clamped, the back pressure pad is sealed and installed in the valve seat, or when disengaged, the valve cover is opened and the back pressure pad can be taken out.

10. The water inlet valve that is easy to maintain according to claim 9, wherein: The second clamping portion is a strip-shaped clamping block, and the strip-shaped clamping block extends circumferentially along the outer side wall of the valve cover. The first clamping portion is a strip-shaped clamping groove, and the strip-shaped clamping groove extends circumferentially along the inner wall of the valve seat. The back pressure pad is arranged on the valve cover and is located at one end of the valve cover close to the valve seat. When installing the back pressure pad, the valve cover together with the back pressure pad is placed into the valve seat, and the valve cover is rotated so that the strip-shaped clamping block rotates and snaps into the strip-shaped clamping groove.

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