Resonance eliminating structure of gas one-way valve

Abstract

The utility model provides a resonance eliminating structure of a gas one-way valve in the field of valves of gas conveying systems. The resonance eliminating structure comprises a one-way valve main body, a one-way valve sub body, an inner sealing ring, a poppet head check block, a poppet head, a gas guide block, an outer sealing ring and a spring. An air guide block and a lifting head check block are arranged in the one-way valve main body and the one-way valve auxiliary body, and a lifting head and a spring are arranged in the air guide block and the lifting head. The lifting head and the lifting head check block jointly form an inner seal, the outer sealing component is located between the lifting head check block and the air guide block, the outer sealing component, the one-way valve son body and the one-way valve mother body jointly form an outer seal, air leakage is prevented, and a plurality of air guide grooves are evenly distributed in the air guide block. Under the action of the air guide block provided with the air guide groove in the one-way valve, airflow stably passes through the one-way valve by changing the displacement of the lifting head when passing through the one-way valve, and the resonance condition is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of valves for gas delivery systems, in particular to a resonance elimination structure for a one-way valve in a gas pipeline system. Background Art

[0002] A gas check valve is a crucial component of a gas delivery system, primarily used for pipeline transportation of high- and low-pressure gases. Between the gas source and gas-consuming equipment, when the carrier gas is changed, the check valve automatically closes and maintains a seal due to the inlet and outlet pressure differential and the action of a spring. A gas check valve typically consists of a check valve body, a check valve sub-body, a poppet, a spring, and a seal. The clearance between the poppet and the check valve sub-body provides guidance. Under certain nitrogen gas flows, the check valve will resonate. This means the poppet moves in a circular motion under the interaction of the gas flow and spring, producing a whistling sound and high-frequency, unstable airflow. This can even cause the poppet to heat up, potentially leading to spontaneous combustion of gas in the pipeline and seal failure, impacting the safety of experimental equipment, laboratories, and personnel.

[0003] The current solution to the one-way valve resonance phenomenon is to replace the spring that resonates under the corresponding airflow to change the corresponding resonant frequency to achieve an anti-vibration effect.

[0004] However, the above method still has problems. For example, it is not easy to replace the spring under actual conditions. Resonance cannot be avoided even if the spring is replaced at low pressure and low flow. In addition, the corresponding labor cost of replacing the spring is greatly increased. Summary of the Invention

[0005] In view of the shortcomings of existing products, the purpose of the utility model is to provide a gas one-way valve resonance elimination structure.

[0006] According to the utility model, a gas one-way valve resonance elimination structure is provided, which includes a one-way valve body, a one-way valve sub-body, a poppet, a poppet stopper, an air guide block, a spring, an inner sealing ring and an outer sealing ring;

[0007] The one-way valve body and the one-way valve sub-body are equipped with a poppet, a poppet stopper, a spring, an air guide block, an inner sealing ring, and an outer sealing ring. The air guide block is located between the poppet and the one-way valve sub-body. Strip-shaped air guide grooves are evenly distributed around the air guide block, and a limiting boss is designed at the air outlet end of the air guide block.

[0008] In some embodiments, both ends of the air guide groove or the air inlet end are designed to be arc-shaped structures.

[0009] In some embodiments, the air inlet end of the air guide groove is designed to be a V-shaped structure.

[0010] In some embodiments, the limiting boss may be designed as a separate part assembled to the inner side of the air guide block.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] The utility model adds an air guide block structure between the one-way valve core and the one-way valve sub-body, which changes the original airflow from the valve core through the way to the external flow channel, so that the airflow is dispersed between the valve core and the sub-body, achieving the purpose of suppressing resonance;

[0013] When gases of different flow rates pass through the one-way valve, the valve core moves differently due to the combined action of the spring and the vent hole in the external flow channel. In addition, the valve core has an arc or V-shaped structure at its initial opening position, which allows the gas to pass through the one-way valve smoothly without resonance.

[0014] At the same time, a limiting boss is provided on the air guide block, which can suppress excessive displacement of the valve core and make the valve core reach an optimal position. At this time, the gas flow through the one-way valve is maximized, avoiding excessive valve core opening that affects the normal operation of the one-way valve, thereby ensuring the reliability of the one-way valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 This is a schematic cross-sectional view of the resonance elimination structure of a gas one-way valve of the utility model. Figure 2 It is a schematic diagram of the cross-sectional structure of the gas guide block.

[0017] Reference numerals:

[0018] One-way valve body 1

[0019] One-way valve body 2

[0020] Inner seal ring 3 Outer seal ring 7

[0021] Poppet stopper 4 Poppet 5

[0022] Gas block 6 Spring 8 DETAILED DESCRIPTION

[0023] The present invention is described in detail below with reference to specific implementations. The following implementations will help those skilled in the art further understand the present invention, but are not intended to limit the present invention in any way. It should be noted that a person skilled in the art may make various changes and improvements without departing from the concept of the present invention. These modifications and improvements fall within the scope of protection of the present invention.

[0024] like Figure 1As shown, the present invention comprises a check valve body 1, a check valve sub-body 2, an inner sealing ring 3, a poppet stopper 4, a poppet 5, an air guide block 6, an outer sealing ring 7, and a spring 8. The poppet stopper 2 and air guide block 6 are positioned within the check valve body 1 and the check valve sub-body 2. The poppet 5 is positioned within the air guide block 6, and a spring 8 is positioned within the poppet 5. The inner sealing ring 3 is positioned on the poppet 5, and the outer sealing ring 7 is positioned between the check valve sub-body 2 and the poppet stopper 4. The air guide block 6 has evenly distributed air guide grooves, with the inlet ends of the grooves being circular or V-shaped, and is provided with a boss. This invention can be applied to check valves used in various fields.

[0025] How it works

[0026] When air flows through the one-way valve, the poppet 5 forms a variable opening flow channel size according to the required air volume, the air guide groove on the air guide block 6 and the spring 8. When a small flow passes through the one-way valve, since the air inlet end of the air guide groove on the air guide block 6 is an arc-shaped or V-shaped structure, the poppet 6 can move smoothly, thereby avoiding the resonance caused by the fluctuating opening channel of the conventional one-way valve, and a limiting boss is provided on the air guide block 6 to prevent the poppet 5 from excessive displacement due to excessive airflow, thereby improving the overall stability and reliability of the one-way valve.

[0027] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the devices or elements referred to must be

[0028] It has a specific orientation, is constructed and operates in a specific orientation, and therefore should not be construed as limiting the present application.

[0029] The above describes specific embodiments of the present invention. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art may make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. The embodiments of this application and the features in the embodiments may be combined with each other in any manner unless there is a conflict.

Claims

1. A gas one-way valve resonance elimination structure, characterized in that: It comprises a one-way valve body (1), a one-way valve sub-body (2), an inner sealing ring (3), a poppet stopper (4), a poppet (5), an air guide block (6), an outer sealing ring (7) and a spring (8); The one-way valve main body (1) and the one-way valve sub-body (2), the poppet (5), the poppet stopper (4), the air guide block (6), the inner sealing ring (3) and the outer sealing ring (7); the air guide block (6) is located between the poppet (5) and the one-way valve sub-body (2); a section of the poppet (5) is connected to the inner sealing ring (3); a spring (8) is provided in the poppet (5); and a flow guide channel is provided on the air guide block (6).

2. The one-way valve resonance elimination structure according to claim 1, characterized in that: A limiting boss is provided on the air guide block (6), and a guide groove is provided on the air guide block (6).

3. The one-way valve resonance elimination structure according to claim 2, characterized in that: The guide grooves on the air guide block (6) are evenly distributed.

4. The one-way valve resonance elimination structure according to claim 3, characterized in that: The two ends of the guide groove on the air guide block (6) are arc-shaped structures, and the middle width of the guide groove is 2 to 5 mm.

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