An intake check valve

Abstract

This utility model relates to the field of check valve technology, and provides an intake check valve, including a valve seat, a spring, a valve, an intake valve cylinder, an intake filter, an intake retainer, a right-angle elbow, and a return oil pipe. The valve seat is disposed on one side of the intake valve cylinder, the valve is disposed inside the intake valve cylinder, and the valve is connected to the intake valve. An elastic element is disposed between the valve seat and the valve cylinder. The intake retainer is disposed on the other side of the intake valve cylinder. The intake filter is disposed on the side of the intake valve cylinder near the intake retainer. A first O-ring is provided on the valve, and second O-rings are provided on both sides of the intake valve cylinder between the valve seat and the intake retainer. This application forms a three-stage line seal by setting the first O-ring and two second O-rings, which not only ensures the gas sealing performance of the system in the closed state, but also enhances the reliability and service life of the system, and provides reliable sealing performance.

Description

Technical Field

[0001] This utility model relates to the field of check valve technology, specifically to an intake check valve. Background Technology

[0002] In the prior art, the intake check valve, as a key component of pneumatic systems, is widely used in various industrial equipment and mechanical systems. Its main function is to prevent the backflow of gas in the system, thereby ensuring the normal operation and safety of the system. Traditional intake check valve designs typically employ a distributed component structure, and generally, check valves are single-stage planar seals with weak sealing performance. Leakage of the check valve can easily cause accidents, and planar seals require large pressure springs, making operation extremely inconvenient. Therefore, this application is hereby proposed. Utility Model Content

[0003] This application proposes an intake check valve to solve the technical problem that existing check valves are single-stage planar seals with weak sealing performance, and leakage can easily cause accidents. The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0004] An intake check valve includes a valve seat, a spring, a valve, an intake valve cylinder, an intake filter, an intake retainer, a right-angle elbow, and a return oil pipe. The valve seat is disposed on one side of the intake valve cylinder, the valve is disposed inside the intake valve cylinder, the valve is connected to the valve seat, an elastic element is disposed between the valve seat and the valve, the intake retainer is disposed on the other side of the intake valve cylinder, the intake filter is disposed on the side of the intake valve cylinder near the intake retainer, the valve is provided with a first O-ring, and second O-rings are provided on both sides of the intake valve cylinder between the valve seat and the intake retainer.

[0005] Furthermore, the intake valve cylinder is provided with a right-angle bend.

[0006] Furthermore, the right-angle bend is equipped with an oil return pipe.

[0007] Furthermore, the intake cover and the intake valve cylinder are connected by an internal hex screw.

[0008] Furthermore, a spring washer is provided between the hexagonal socket screw and the air intake cover.

[0009] Furthermore, the elastic element is a spring.

[0010] Furthermore, the return oil pipe is a Teflon pipe.

[0011] Compared with the prior art, the beneficial effects of this utility model include:

[0012] This application forms a three-stage line seal by setting a first O-ring and two second O-rings, which not only ensures the gas tightness of the system in the closed state, but also enhances the reliability and service life of the system, and the sealing performance is reliable.

[0013] This application adopts an integrated and modular design. The intake check valve integrates multiple components such as valve seat, spring, valve, intake valve cylinder, intake filter, intake cover, right angle elbow and return oil pipe, forming a complete and fully functional system. This facilitates installation, maintenance and replacement of parts, and improves the overall reliability and maintainability of the equipment.

[0014] By placing the intake filter on the side of the intake valve cylinder near the intake cover, the air entering the valve can be effectively filtered, preventing impurities and particles from damaging the valve and valve seat, thereby extending the service life of the equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] In the diagram: 1. Valve seat; 2. Spring; 3. Valve; 4. Intake valve cylinder; 5. Intake filter; 6. Intake cover; 7. Right angle elbow; 8. Oil return pipe; 9. First O-ring; 10. Second O-ring; 11. Socket head screw; 12. Spring washer. Detailed Implementation

[0017] 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.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0020] Please see the appendix Figure 1 An intake check valve includes a valve seat 1, a spring 2, a valve 3, an intake valve cylinder 4, an intake filter 5, an intake retainer 6, a right-angle elbow 7, and a return oil pipe 8. The valve seat 1 is located on one side of the intake valve cylinder 4, and the valve 3 is located inside the intake valve cylinder 4 and connected to the valve seat 1. An elastic element, which is a spring 2, is located between the valve seat 1 and the valve 3. The intake retainer 6 is located on the other side of the intake valve cylinder 4, and the intake filter 5 is located on the side of the intake valve cylinder 4 near the intake retainer 6. The right-angle elbow 7 is located on the intake valve cylinder 4, and the return oil pipe 8 is located on the right-angle elbow 7. A first O-ring 9 is provided on the valve 3, and second O-rings 10 are provided on both sides of the intake valve cylinder 4 between the valve seat 1 and the intake retainer 6.

[0021] Using the above technical solution, when gas enters the intake valve cylinder 4 through the intake filter 5, if the gas pressure is high enough, it will push the valve 3 to overcome the resistance of the spring 2 and open, allowing gas to enter the system through the right-angle bend 7. When the gas pressure decreases or disappears, the spring 2 will pull the valve 3 back onto the valve seat 1 to form a seal and prevent gas backflow. The intake filter 5 prevents impurities from entering the intake valve cylinder 4 and protects the system from damage. The right-angle bend 7 changes the direction of gas flow to adapt to the needs of the system layout. The return oil pipe 8 is used to recover or discharge liquid in the system to ensure smooth gas flow.

[0022] The first O-ring 9 provides an additional sealing effect. When the valve 3 is closed and contacts the valve seat 1, the first O-ring 9 is compressed and forms a tight line seal, which can effectively prevent gas from leaking out from the tiny gap between the valve 3 and the valve seat 1, thereby ensuring the gas tightness of the system in the closed state, ensuring that there is no gas leakage between the valve 3 and the valve seat 1 when the valve is closed, and increasing the sealing performance and reliability of the system.

[0023] The second O-ring 10 ensures that there is no gas leakage at the connection between the intake valve cylinder 4 and the valve seat 1 and the intake cover 6, further enhancing the system's sealing performance and preventing performance degradation or safety hazards due to gas leakage.

[0024] In some embodiments, the intake manifold 6 and the intake valve cylinder 4 are connected by an Allen screw 11. The Allen screw 11 provides a robust connection, ensuring that the intake manifold 6 is securely fixed to the intake valve cylinder 4. This connection method is easy to disassemble and maintain, while providing sufficient strength and stability.

[0025] In some embodiments, a spring washer 12 is provided between the hex socket screw 11 and the intake cap 6. The spring washer 12 provides additional cushioning and sealing, ensuring that the hex socket screw 11 will not damage the intake cap 6 or cause gas leakage when tightened, and helps to disperse the pressure generated when the screw is tightened, thereby extending the service life of the component.

[0026] In some embodiments, the return oil pipe 8 is a Teflon tube. Teflon tubes are corrosion-resistant, high-temperature resistant, and chemically resistant, making them ideal for use in the return oil pipe 8. They can withstand fluctuations in liquid pressure and temperature within the system while maintaining the integrity and sealing of the pipeline. Teflon tubes are also easy to bend and install, adapting to different system layouts and installation requirements.

[0027] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. An intake check valve, characterized in that, The device includes a valve seat, an elastic element, a valve, an intake valve cylinder, an intake filter, an intake retainer, a right-angle elbow, and a return oil pipe. The elastic element is a spring. The valve seat is located on one side of the intake valve cylinder, the valve is located inside the intake valve cylinder, and the valve is connected to the valve seat. The elastic element is located between the valve seat and the valve. The intake retainer is located on the other side of the intake valve cylinder. The intake filter is located on the side of the intake valve cylinder near the intake retainer. The valve is provided with a first O-ring, and second O-rings are provided on both sides of the intake valve cylinder between the valve seat and the intake retainer.

2. The intake check valve according to claim 1, characterized in that, The intake valve cylinder is equipped with a right-angle bend.

3. The intake check valve according to claim 1, characterized in that, The right-angle bend is equipped with an oil return pipe.

4. An intake check valve according to claim 1, characterized in that, The intake cover and the intake valve cylinder are connected by an internal hex screw.

5. An intake check valve according to claim 4, characterized in that, A spring washer is provided between the hex socket screw and the air intake cover.

6. An intake check valve according to claim 1, characterized in that, The return oil pipe is a Teflon pipe.

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