Backflow prevention side water inlet valve

Abstract

The utility model discloses an anti-backflow side water inlet valve, which relates to the technical field of water inlet valves, and comprises a valve body, the side wall of the valve body is fixedly connected with a concentric-square-shaped pipe, one end of the concentric-square-shaped pipe is fixedly connected with a water inlet pipe, the pipe wall of the valve body is fixedly sleeved with a connecting body, the inner walls of the two sides of the connecting body are both provided with open grooves, and the open grooves are communicated with the water inlet pipe. The device comprises a valve body, two open grooves are formed in the valve body, a connecting plate is movably sleeved with the two open grooves, springs are fixedly connected between the inner walls of the two open grooves and one end of the surface of the connecting plate, a first fixing rod is fixedly connected to the bottom of the connecting plate, a valve element is fixedly connected to the rod wall of one end of the first fixing rod, and the pipe wall of the valve body is fixedly sleeved with a treatment bin. When the valve element is blocked, the pressing block is pressed to enable the valve element to move downwards to the treatment bin through the connecting rod, the valve element is opened, blockages are taken away through impact of water flow, and the blockages in the valve body can be conveniently cleaned.

Description

Technical Field

[0001] The utility model relates to the technical field of water inlet valves, in particular to a water inlet valve on the anti - reflux side. Background Art

[0002] The anti - reflux water inlet valve is a device used to prevent the reverse flow of water. It is usually installed at key positions in the household water pipe system, such as the water inlet pipes of kitchens, toilets, and water heaters, to prevent sewage or unqualified water from flowing back into the drinking water system. The design of this valve aims to protect the safety of household drinking water and ensure that family members are not threatened by health problems due to accidentally drinking unhygienic water.

[0003] The existing water inlet valves on the anti - reflux side generally use pressure - type water - stop valves to solve the problem of sewer backflow. This pressure - type water - stop valve automatically opens or closes through the force of water flow to make water flow unidirectionally. When used in the kitchen, kitchen waste is likely to flow into the pipeline during cleaning, causing the pressure - type water - stop valve to be blocked, making the water inlet valve on the anti - reflux side unable to be used normally and inconvenient to clean the pressure - type water - stop valve. Summary of the Invention

[0004] In view of the problems existing in the above - mentioned existing water inlet valves on the anti - reflux side, the present utility model is proposed.

[0005] Therefore, the purpose of the present utility model is to provide a water inlet valve on the anti - reflux side, which solves the problems that when used in the kitchen, kitchen waste is likely to flow into the pipeline during cleaning, causing the pressure - type water - stop valve to be blocked, making the water inlet valve on the anti - reflux side unable to be used normally and inconvenient to clean the pressure - type water - stop valve.

[0006] To achieve the above purpose, the present utility model provides the following technical solution: A water inlet valve on the anti - reflux side includes a valve body. A return pipe is fixedly connected to the side wall of the valve body. One end of the return pipe is fixedly connected to a water inlet pipe. A connecting body is fixedly sleeved on the pipe wall of the valve body. Open slots are provided on both inner walls of the connecting body. A connecting plate is movably sleeved inside the two open slots. Springs are fixedly connected between the inner walls of the two open slots and the surface of one end of the connecting plate. A first fixing rod is fixedly connected to the bottom of the connecting plate. A valve core is fixedly connected to the rod wall of one end of the first fixing rod. A treatment chamber is fixedly sleeved on the pipe wall of the valve body. The valve core movably passes through the inside of the valve body and the inside of the treatment chamber through two springs. A connecting rod is fixedly connected to the surface of the connecting plate. One end of the connecting rod penetrates through the side wall of the valve body and is fixedly connected to a pressing block.

[0007] Preferably, a first sealing gasket is fixedly connected to the side wall of the pressing block. A limiting plate is fixedly sleeved on the rod wall of the connecting rod. A second sealing gasket is fixedly connected to the side wall of the limiting plate.

[0008] Preferably, a second fixing rod is fixedly connected between the inner walls on both sides of the valve body. A limiting sleeve is fixedly sleeved inside the second fixing rod, and the rod wall of the connecting rod is movably sleeved inside the limiting sleeve.

[0009] Preferably, baffle plates are respectively fixedly connected to the inner walls on both sides of the treatment chamber.

[0010] Furthermore, a plurality of water flow holes are formed in the surfaces of the two baffle plates.

[0011] Preferably, a water outlet pipe is fixedly connected to the bottom of the treatment chamber.

[0012] In the above technical solution, the technical effects and advantages provided by the present utility model are as follows:

[0013] In the present utility model, water flows into the valve body through the return pipe. The water pressure impact causes the valve core to move downward into the treatment chamber, stretching the two side springs. The water flows out through the treatment chamber from the water outlet pipe. When the water pressure cannot push open the valve core, the valve core moves inward into the valve body through the two side springs to block the water flow. A small amount of water flow will be blocked on the upper surface of the valve core, preventing the gas below from entering the room. When the valve core is blocked, by pressing the pressing block, the valve core is moved downward into the treatment chamber through the connecting rod. The valve core is opened, and the blockage is carried away by the impact of the water flow, facilitating the cleaning of the blockage inside the valve body.

[0014] In the present utility model, when the valve core is opened, the connecting rod drives the pressing block to move downward, making the first sealing pad fit with the upper surface of the valve body. When the valve core is closed, the connecting rod drives the limiting plate to move upward, making the second sealing pad fit with the inner wall of the valve body, further preventing the gas below the valve body from being discharged.

[0015] In the present utility model, during backflow, the two baffle plates are used to block the impact of the water flow, so that the water flow passes through the water flow holes to reduce the impact force of the water flow, preventing the water flow from directly impacting the valve core and causing damage to the valve core. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

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

[0018] Figure 2 is Figure 1 a top view structural cross-sectional view of the treatment chamber in

[0019] Figure 3 isFigure 1 Schematic enlarged view of part A in the middle.

[0020] Explanation of reference numerals in the drawings:

[0021] 1. Valve body; 2. Return pipe; 3. Water inlet pipe; 4. Connecting body; 5. Groove; 6. Connecting plate; 7. Spring; 8. First fixing rod; 9. Valve core; 10. Processing chamber; 11. Connecting rod; 12. Pressing block; 13. First sealing gasket; 14. Limiting plate; 15. Second sealing gasket; 16. Second fixing rod; 17. Limiting sleeve; 18. Baffle plate; 19. Water flow hole; 20. Water outlet pipe. Specific implementation manner

[0022] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be further introduced in detail below in conjunction with the accompanying drawings.

[0023] The embodiment of the present utility model discloses an anti-backflow side water inlet valve.

[0024] The present utility model provides an anti-backflow side water inlet valve as shown in Figures 1-3 , including a valve body 1. A return pipe 2 is fixedly connected to the side wall of the valve body 1. One end of the return pipe 2 is fixedly connected to a water inlet pipe 3. A connecting body 4 is fixedly sleeved on the pipe wall of the valve body 1. Grooves 5 are formed in the inner walls on both sides of the connecting body 4. A connecting plate 6 is movably sleeved inside the two grooves 5. Springs 7 are fixedly connected between the inner walls of the two grooves 5 and the surface end of the connecting plate 6. A first fixing rod 8 is fixedly connected to the bottom of the connecting plate 6. One end of the rod wall of the first fixing rod 8 is fixedly connected to a valve core 9. A processing chamber 10 is fixedly sleeved on the pipe wall of the valve body 1. The valve core 9 movably passes through the inside of the valve body 1 and the inside of the processing chamber 10 through the two springs 7. A connecting rod 11 is fixedly connected to the surface of the connecting plate 6. One end of the connecting rod 11 penetrates through the side wall of the valve body 1 and is fixedly connected to a pressing block 12. A water outlet pipe 20 is fixedly connected to the bottom of the processing chamber 10.

[0025] By providing the return pipe 2, a upward force is generated when the water flow passes through the return pipe 2, thereby preventing the gas and bugs below from entering the room. The water flow enters the inside of the valve body 1 through the return pipe 2. Using the impact of the water pressure, the valve core 9 moves downward into the inside of the processing chamber 10 to stretch the two springs 7 on both sides. The water flow passes through the processing chamber 10 and is discharged from the water outlet pipe 20. When the water pressure cannot push open the valve core 9, the valve core 9 moves toward the inside of the valve body 1 through the two springs 7 to block the water flow. The valve core 9 will block a small amount of water flow on the upper surface of the valve core 9 to prevent the gas below from entering the room. When the valve core 9 is blocked, by pressing the pressing block 12, the valve core 9 is moved downward into the processing chamber 10 through the connecting rod 11. Manually open the valve core 9, and the blocking object is taken away by the impact of the water flow, which is convenient for cleaning the blocking object inside the valve body 1.

[0026] To prevent the gas below the valve body 1 from discharging, as Figure 1 shown, a first sealing gasket 13 is fixedly connected to the side wall of the pressing block 12, a limiting plate 14 is fixedly sleeved on the rod wall of the connecting rod 11, and a second sealing gasket 15 is fixedly connected to the side wall of the limiting plate 14.

[0027] When the valve core 9 is opened, the connecting rod 11 drives the pressing block 12 to move downward, so that the first sealing gasket 13 fits on the upper surface of the valve body 1. When the valve core 9 is closed, the connecting rod 11 drives the limiting plate 14 to move upward, so that the second sealing gasket 15 fits on the inner wall of the valve body 1, further preventing the gas below the valve body 1 from discharging.

[0028] And to prevent the connecting rod 11 from shaking during movement, as Figure 1 and 3 shown, a second fixing rod 16 is fixedly connected between the inner walls on both sides of the valve body 1. A limiting sleeve 17 is fixedly sleeved inside the second fixing rod 16, and the rod wall of the connecting rod 11 is movably sleeved inside the limiting sleeve 17.

[0029] By providing the limiting sleeve 17, the connecting rod 11 is prevented from shaking during movement, thereby preventing the valve body 1 and the valve core 9 from being misaligned during movement.

[0030] Finally, to prevent the water flow from directly impacting the valve core 9, as Figure 1 and 2 shown, baffle plates 18 are respectively fixedly connected to the inner walls on both sides of the treatment chamber 10, and a plurality of water flow holes 19 are formed on the surfaces of the two baffle plates 18.

[0031] During backflow, the two baffle plates 18 are used to block the water flow impact, so that the water flow passes through the water flow holes 19 to reduce the impact force of the water flow, preventing the water flow from directly impacting the valve core 9 and causing damage to the valve core 9.

[0032] Only some exemplary embodiments of the present invention are described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present invention.

Claims

1. A backflow prevention side water inlet valve, comprising a valve body (1), characterized in that: The side wall of the valve body (1) is fixedly connected to a return pipe (2), one end of the return pipe (2) is fixedly connected to a water inlet pipe (3), the pipe wall of the valve body (1) is fixedly sleeved with a connector (4), both inner walls of the connector (4) are provided with grooves (5), the insides of the two grooves (5) are movably sleeved with connecting plates (6), the inner walls of the two grooves (5) are fixedly connected to one end of the surface of the connecting plate (6) with a spring (7), the bottom of the connecting plate (6) is A first fixing rod (8) is fixedly connected, one end of the first fixing rod (8) is fixedly connected to a valve core (9), the tube wall of the valve body (1) is fixedly sleeved with a processing chamber (10), the valve core (9) is movably inserted into the interior of the valve body (1) and the interior of the processing chamber (10) via springs (7) on both sides, the surface of the connecting plate (6) is fixedly connected to a connecting rod (11), one end of the connecting rod (11) passes through the side wall of the valve body (1) and is fixedly connected to a pressing block (12).

2. The backflow prevention side water inlet valve according to claim 1, characterized in that: A first sealing gasket (13) is fixedly connected to the side wall of the pressing block (12), a limit plate (14) is fixedly sleeved on the rod wall of the connecting rod (11), and a second sealing gasket (15) is fixedly connected to the side wall of the limit plate (14).

3. The backflow prevention side water inlet valve according to claim 1, characterized in that: A second fixing rod (16) is fixedly connected between the inner walls on both sides of the valve body (1), the interior of the second fixing rod (16) is fixedly sleeved with a limiting sleeve (17), and the rod wall of the connecting rod (11) is movably sleeved with the interior of the limiting sleeve (17).

4. The backflow prevention side water inlet valve according to claim 1, characterized in that: Flow baffles (18) are fixedly connected to inner walls on both sides of the processing chamber (10).

5. The backflow prevention side water inlet valve according to claim 4, characterized in that: A plurality of water flow holes (19) are provided on the surfaces of the two baffle plates (18).

6. The backflow prevention side water inlet valve according to claim 1, characterized in that: A water outlet pipe (20) is fixedly connected to the bottom of the processing bin (10).

Images