One-way valve with cut-off function

Abstract

The utility model belongs to the technical field of one-way valves, and particularly relates to a one-way valve with a stop function, which comprises a valve body, and a liquid inlet pipe and an outflow pipe are respectively arranged at two ends of the valve body. A baffle of an annular structure and a fixing plate of a strip-shaped structure are arranged in the valve body in the direction from the liquid inlet pipe to the outflow pipe, a push rod is movably connected to the fixing plate in an inserted mode, a push plate used for blocking the baffle is fixedly connected to one end of the push rod, a spring arranged on the push rod in a sleeving mode is arranged between the push plate and the fixing plate, and a sliding block is arranged at the other end, away from the baffle, of the push rod. A cam in sliding contact with the sliding block is further movably arranged in the valve body, and a driving assembly is arranged on the inner wall of the valve body and used for driving the cam.

Description

Technical Field

[0001] This utility model belongs to the field of one-way valve technology, specifically referring to a one-way valve with a shut-off function. Background Technology

[0002] One-way valves are widely used in fluid transport systems in industrial production and daily life. Their function is to ensure that fluid can flow in only one direction and prevent backflow.

[0003] However, in real-world applications, it is often necessary to completely shut off the fluid flow when needed. In such cases, traditional check valves cannot meet the requirements, and shut-off valves must be installed. This not only increases system costs but also makes the pipeline layout more complex, occupies more space, and increases the workload of installation and maintenance. Utility Model Content

[0004] The technical problem this invention aims to solve is that existing one-way valves require additional valves when it is necessary to completely block fluid flow, which increases investment costs and is inconvenient to use.

[0005] To achieve the above functions, the technical solution adopted by this utility model is as follows: a one-way valve with a shut-off function, including a valve body, wherein an inlet pipe and an outlet pipe are respectively provided at both ends of the valve body;

[0006] The valve body is provided with an annular baffle and a strip-shaped fixing plate from the inlet pipe to the outlet pipe. A push rod is movably inserted into the fixing plate. One end of the push rod is fixed to a push plate for blocking the baffle. A spring is provided between the push plate and the fixing plate and sleeved on the push rod. The other end of the push rod, away from the baffle, is provided with a slider. The valve body is also provided with a cam that slides in contact with the slider. A drive assembly is provided on the inner wall of the valve body for driving the cam.

[0007] Furthermore, the drive assembly includes an adjustment shaft and a knob. The adjustment shaft is damped and rotates on the inner wall of the valve body and passes through a cam. One end of the adjustment shaft passes through the side wall of the valve body and extends outward. The knob is fixed to the extended end of the adjustment shaft.

[0008] Furthermore, the push plate is provided with a rubber sealing gasket.

[0009] Furthermore, a limiting block is provided on the outer side wall of the valve body near the adjusting shaft, and a fixing block is fixedly connected to the side wall of the adjusting shaft, which is limited by the limiting block.

[0010] Preferably, the inlet pipe is threaded with a connecting pipe, and a filter screen is installed inside the connecting pipe.

[0011] The beneficial effects achieved by adopting the above-described structure are as follows:

[0012] 1. By setting a cam and a slider, the push rod can be pushed towards the baffle, which in turn drives the push plate and the sealing gasket to block the baffle, thus completing the shut-off of the one-way valve. The structure is simple and the operation is convenient.

[0013] 2. By setting up connecting pipes and filters, impurities in the liquid can be filtered out, preventing some impurities from remaining between the sealing gasket and the baffle, which could cause poor sealing and leakage. Attached Figure Description

[0014] Figure 1 This is an overall structural diagram of a one-way valve with a shut-off function proposed in this utility model;

[0015] Figure 2 A cross-sectional view of a one-way valve with a shut-off function proposed in this utility model;

[0016] Figure 3 This is a structural diagram of the connecting pipe of a one-way valve with a shut-off function proposed in this utility model;

[0017] Figure 4 for Figure 1 Enlarged view of a portion of point A in the middle.

[0018] The components are as follows: 1. Valve body, 2. Inlet pipe, 3. Outlet pipe, 4. Baffle, 5. Fixing plate, 6. Push rod, 7. Push plate, 8. Spring, 9. Slider, 10. Cam, 11. Drive assembly, 12. Adjusting shaft, 13. Knob, 14. Sealing gasket, 15. Limiting block, 16. Fixing block, 17. Connecting pipe, 18. Filter screen. Detailed Implementation

[0019] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The utility model will be further described in detail below with reference to the accompanying drawings.

[0021] Example 1

[0022] like Figure 1-4 As shown, the present invention proposes a one-way valve with a shut-off function, including a valve body 1, with an inlet pipe 2 and an outlet pipe 3 respectively provided at both ends of the valve body 1 for liquid inflow and outflow.

[0023] Inside the valve body 1, from the inlet pipe 2 to the outlet pipe 3, there are a ring-shaped baffle 4 and a strip-shaped fixing plate 5. A push rod 6 is movably inserted into the fixing plate 5. One end of the push rod 6 is fixedly connected to a push plate 7 for blocking the baffle 4. The push plate 7 is provided with a rubber sealing gasket 14 to increase the sealing effect. A spring 8 is provided between the push plate 7 and the fixing plate 5 and sleeved on the push rod 6. The other end of the push rod 6, which is away from the baffle 4, is provided with a slider 9. A cam 10 is also movably provided inside the valve body 1 and slides in contact with the slider 9. A drive assembly 11 is provided on the inner wall of the valve body 1 for driving the cam 10. The drive assembly 11 includes an adjusting shaft 12 and a knob 13. The adjusting shaft 12 is damped and rotates on the inner wall of the valve body 1 and passes through the cam 10. One end of the adjusting shaft 12 passes through the side wall of the valve body 1 and extends out. The knob 13 is fixedly connected to the extended end of the adjusting shaft 12.

[0024] During the liquid inlet process, the liquid passes through the gap in the middle of the annular baffle 4, pushing the push plate 7 to overcome the elastic force of the spring 8, causing the push plate 7 to move towards the outlet pipe 3, so that the through hole in the middle of the baffle 4 is no longer blocked, realizing the one-way flow of the liquid. If the liquid is to be shut off, turn the knob 13 to drive the adjusting shaft 12 to rotate. The adjusting shaft 12 drives the cam 10 to rotate, and the cam 10 pushes the slider 9 to the left, thereby driving the push rod 6 and the push plate 7 to move. The push plate 7 blocks the hole in the middle of the baffle 4. The damping rotation of the adjusting shaft 12 ensures that the cam 10 will not be pushed back, thus achieving complete shut-off of the liquid.

[0025] like Figure 4 As shown, a limiting block 15 is provided on the outer side wall of the valve body 1 near the adjusting shaft 12. A fixing block 16 is fixedly connected to the side wall of the adjusting shaft 12 and is limited by the limiting block 15. The limiting block 15 limits the fixing block 16 so that the adjusting shaft 12 can rotate within a certain range and prevent the cam 10 from rotating excessively.

[0026] Example 2

[0027] like Figure 1 and 3 As shown, a connecting pipe 17 is threaded onto the inlet pipe 2. A filter screen 18 is installed inside the connecting pipe 17 to filter the flowing liquid and prevent impurities from accumulating between the sealing gasket 14 and the baffle 4, which would cause poor sealing.

[0028] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A one-way valve with a shut-off function, characterized in that: It includes a valve body (1), and the valve body (1) is provided with an inlet pipe (2) and an outlet pipe (3) at its two ends respectively; The valve body (1) has an annular baffle (4) and a strip-shaped fixing plate (5) arranged in the direction from the inlet pipe (2) to the outlet pipe (3). A push rod (6) is movably inserted into the fixing plate (5). One end of the push rod (6) is fixedly connected to a push plate (7) for blocking the baffle (4). A spring (8) is provided between the push plate (7) and the fixing plate (5) and sleeved on the push rod (6). The other end of the push rod (6) away from the baffle (4) is provided with a slider (9). A cam (10) is also movably arranged in the valve body (1) and slides in contact with the slider (9). A drive assembly (11) is provided on the inner wall of the valve body (1) for driving the cam (10).

2. A one-way valve with a shut-off function according to claim 1, characterized in that: The drive assembly (11) includes an adjustment shaft (12) and a knob (13). The adjustment shaft (12) is damped and rotates on the inner wall of the valve body (1) and passes through the cam (10). One end of the adjustment shaft (12) passes through the side wall of the valve body (1) and extends out. The knob (13) is fixed to the extended end of the adjustment shaft (12).

3. A one-way valve with a shut-off function according to claim 2, characterized in that: The push plate (7) is provided with a rubber sealing gasket (14).

4. A one-way valve with a shut-off function according to claim 3, characterized in that: The valve body (1) has a limiting block (15) near the adjusting shaft (12) on its outer side wall, and a fixing block (16) that is limited by the limiting block (15) is fixedly connected to the side wall of the adjusting shaft (12).

5. A one-way valve with a shut-off function according to claim 4, characterized in that: The inlet pipe (2) is threaded with a connecting pipe (17), and a filter screen (18) is installed inside the connecting pipe (17).

Images