Gas one-way valve
By designing a gas check valve with a detachable threaded connection, the problem of easy damage to the sealing ring during welding was solved, achieving efficient sealing and convenient replacement, and improving the service life of the check valve and the stability of gas flow.
Patent Information
- Application Number
- CN202520154977.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-23
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2035-01-23
AI Technical Summary
During the welding process of existing check valves, the sealing ring is easily affected by high temperatures due to its proximity to the welding point, resulting in uneven heating, which may cause cracking or damage, affecting the sealing effect.
Design a gas check valve with a detachable threaded connection between the valve seat and the valve nozzle. The valve core assembly includes a valve core body and a sealing ring. The sealing ring has an external fitting design, is welded and then assembled to avoid the influence of high temperature, and the sealing ring can be replaced separately.
It improves the service life and sealing effect of the check valve, reduces the risk of damage to the sealing ring, improves the stability and efficiency of gas flow, and facilitates the replacement of the sealing ring.
Smart Images
Figure CN223578969U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model mainly relates to the technical field of one-way valve, specifically a gas one-way valve. BACKGROUND
[0002] One-way valve is also called check valve or non-return valve, which is a kind of valve allowing fluid to flow in one direction. In gas control system, one-way valve plays a crucial role, which can effectively prevent gas backflow and protect stable operation of the system. One-way valve is mainly composed of valve body, valve seat, valve core and spring. Valve body is generally used to provide overall structural support and flow channel. Valve seat is sealing surface, which usually cooperates with valve core to realize sealing. Valve core is a key component, which is used to control one-way flow of fluid. Spring is used to assist valve core reset and keep closed state.
[0003] At present, there are some drawbacks in the process of machining and assembling of existing one-way valve. Since the inside of one-way valve is usually sealed by sealing gasket to control air inlet and air outlet, when welding, heat near the welding point will quickly spread to the surrounding, including the position of air inlet. Since the sealing ring at the air inlet is in close contact with the valve body, heat is easily transferred to the sealing ring. The temperature gradient near the welding area changes greatly, and the sealing ring may be unevenly heated. This uneven heating will cause thermal stress inside the sealing ring. When the thermal stress exceeds the ultimate strength of the material, the sealing ring will be broken or partially damaged, resulting in ineffective sealing of the sealing ring. UTILITY MODEL CONTENTS
[0004] The utility model technical scheme provides a solution significantly different from the prior art to solve the technical problem that the prior art solution is too single. Specifically, the utility model mainly provides a gas one-way valve to solve the technical problem that the sealing ring is easily deformed and damaged due to its proximity to the welding point during welding process.
[0005] The utility model solves the above technical problems by adopting the following technical scheme:
[0006] A gas one-way valve includes a valve body mechanism, which includes a valve seat and a valve nozzle. A valve core assembly is arranged in the space formed by the valve seat and the valve nozzle. The valve seat and the valve nozzle are detachably connected. The valve core assembly includes a valve core body. A sealing ring is arranged in the groove on the upper side of the valve core body, and the upper side of the sealing ring is in close contact with the upper side of the inner wall of the valve seat.
[0007] Further, the valve seat and the valve nozzle are threadedly connected.
[0008] Further, an air inlet is arranged at the center of the valve seat, and the sealing ring is pressed around the air inlet.
[0009] Further, the valve nozzle is internally provided with an air outlet, and the upper end of the air outlet is movably connected with the valve core body.
[0010] Further, the upper end of the air outlet is provided with a flow guide groove on both sides.
[0011] Further, the valve core body is further provided with a reset spring, and the reset spring is located on the upper side of the valve nozzle.
[0012] Compared with the prior art, the beneficial effects of the utility model are:
[0013] The utility model discloses a valve seat, air inlet, valve nozzle, air outlet, valve core body, sealing ring and reset spring are set up, can be welded first and then assembled when installing the one-way valve, effectively avoid the influence of the heat generated in the welding process to the sealing ring, improve the service life and sealing effect of the one-way valve, and the sealing ring is designed by the valve core outer adhesion, can effectively guarantee the uniform stress of the sealing ring while guaranteeing the sealing effect, reduce the damage of the sealing ring due to the frequent work of the one-way valve, further improve the sealing effect, since the gas may produce turbulence in the flow process, the movable connection between the valve core body and the air outlet in the application is located at the center position, can effectively avoid the increase of the gas energy loss due to the eccentric force of the sealing ring, reduce the impact and corrosion to the internal structure of the valve body, improve the turbulence produced near the valve core when the gas flows in the valve, improve the stability and efficiency of the gas flow, and when the gas leakage is found, the sealing ring can be replaced alone without disassembling the welding position, and the utility model has the advantages of simple and flexible, high operability and certain practical value.
[0014] The utility model will be explained in detail in combination with the specific embodiment and the accompanying drawings. DRAWINGS
[0015] Fig. 1 It is the whole structure schematic diagram of the utility model;
[0016] Fig. 2 It is the whole structure exploded schematic diagram of the utility model;
[0017] Fig. 3 It is the whole structure cross section schematic diagram of the utility model.
[0018] In the drawing: 1, valve body mechanism;11, valve seat;111, air inlet;12, valve nozzle;121, air outlet;122, flow guide groove;13, valve core assembly;131, valve core body;132, sealing ring;133, reset spring. PREFERRED EMBODIMENT
[0019] For the convenience of understanding the utility model, the utility model will be described more comprehensively below with reference to relevant drawings, and the drawings show several embodiments of the utility model, but the utility model can be realized in different forms and is not limited to the embodiments described in the text, on the contrary, these embodiments are provided to make the disclosed content of the utility model more thorough and comprehensive.
[0020] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can be a middle element, and when an element is referred to as being "connected to" another element, it can be directly connected to the other element or there can be a middle element, and the terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.
[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs, and the terms used in the specification of the utility model herein are for the purpose of describing specific embodiments and are not intended to limit the utility model, and the term "and / or" used herein includes any and all combinations of one or more relevant listed items.
[0022] Please refer to the drawings Figs. 1-3 A gas check valve, comprising a valve body mechanism 1, the valve body mechanism 1 comprises a valve seat 11 and a valve nozzle 12, a valve core assembly 13 is arranged in the space formed by the valve seat 11 and the valve nozzle 12, the valve seat 11 and the valve nozzle 12 are detachably connected, the valve core assembly 13 comprises a valve core body 131, a sealing ring 132 is arranged in the groove on the upper side of the valve core body 131, and the upper side of the sealing ring 132 is in close contact with the upper side of the inner wall of the valve seat 11.
[0023] Through the above structure, when the check valve is installed, it can be welded first and then assembled, which effectively avoids the influence of heat generated in the welding process on the sealing ring 132, improves the service life and sealing effect of the check valve, improves the stability and efficiency of gas flow when the gas flows in the valve, and improves the stability and efficiency of gas flow when the gas flows in the valve, and the sealing ring 132 can be replaced separately without welding, which has certain practical value.
[0024] The specific operation is as follows: first, the valve nozzle 12 is welded to the reserved hole on the pipeline, then the reset spring 133, the valve core body 131 and the sealing ring 132 in the valve core assembly 13 are installed on the valve nozzle 12 in sequence, and the sealing ring 132 is installed in sequence, which can avoid deformation and damage of the sealing ring 132 due to high temperature during welding, and the sealing effect is lost, and then the valve seat 11 is screwed on the valve nozzle 12.
[0025] Please refer to the attached drawings Fig. 2 and the attached drawings Fig. 3 , the valve seat 11 and the valve nozzle 12 are threadedly connected, facilitating the installation of the valve body, avoiding the damage of the sealing ring 132 caused by high temperature during welding, the center of the valve seat 11 is provided with an air inlet 111, the sealing ring 132 is pressed around the air inlet 111, the valve nozzle 12 is internally provided with an air outlet 121, and the upper end of the air outlet 121 is movably connected with the valve core body 131, the fluid is guided into and out of the valve through the cooperation between the air inlet 111 and the air outlet 121, the two sides of the upper end of the air outlet 121 are provided with flow guide grooves 122, the flow guide grooves 122 are beneficial to the flow of the fluid into the air outlet 121, the valve core body 131 is further provided with a reset spring 133, and the reset spring 133 is located on the upper side of the valve nozzle 12, the reset spring 133 resets the valve core body 131, so that the sealing ring 132 on the valve core body 131 is pressed around the air inlet 111.
[0026] The utility model is described above in conjunction with the drawings, and obviously, the specific implementation of the utility model is not limited by the above method, as long as the method concept and technical scheme of the utility model are adopted for non-essential improvement or the concept and technical scheme of the utility model are directly applied to other occasions without improvement, which are all within the protection scope of the utility model.
Claims
1. A gas check valve, comprising a valve body mechanism (1), the valve body mechanism (1) comprising a valve seat (11) and a valve nozzle (12), wherein a valve core assembly (13) is disposed within the space formed by the valve seat (11) and the valve nozzle (12), characterized in that, The valve seat (11) and the valve nozzle (12) are detachably connected. The valve core assembly (13) includes a valve core body (131). A sealing ring (132) is provided in the groove on the upper side of the valve core body (131), and the upper side of the sealing ring (132) is in close contact with the upper side of the inner wall of the valve seat (11).
2. A gas check valve according to claim 1, characterized in that, The valve seat (11) and the valve nozzle (12) are connected by a thread.
3. A gas check valve according to claim 2, characterized in that, An air inlet (111) is provided at the center of the valve seat (11), and a sealing ring (132) is pressed around the air inlet (111).
4. A gas check valve according to claim 2, characterized in that, The valve nozzle (12) has an air outlet (121) inside, and the upper end of the air outlet (121) and the valve core body (131) are movably connected.
5. A gas check valve according to claim 4, characterized in that, The air outlet (121) is provided with guide grooves (122) on both sides of the upper end.
6. A gas check valve according to claim 1, characterized in that, The valve core body (131) is also provided with a reset spring (133), and the reset spring (133) is located on the upper side of the valve nozzle (12).