Nitrogen spring vent valve structure

Abstract

The utility model relates to the technical field of gas valve, and disclose a nitrogen gas spring air release valve structure, including valve sleeve, valve seat, valve needle and rotating handle, the valve sleeve outside is equipped with the screw thread for installing, the valve sleeve outside is equipped with ED washer and realizes end face sealing through ED washer, the valve sleeve inside is equipped with the step hole, and the step hole is equipped with O ring, and the O ring is equipped with the gasket, the valve needle is installed in the valve seat, the valve seat is installed with the valve sleeve, the rotating handle is installed in the valve sleeve outside, the rotating handle outside is equipped with the snap ring for fixed, the rotating handle is equipped with the shock absorbing pad, the valve needle front end is equipped with the gradient, and the gradient is used for leading in O ring, makes the valve needle smooth slip and is closely matched with O ring. The nitrogen gas spring air release valve structure can realize firm stable sealing effect, and the anti -jarring effect is obvious, can reduce sealing element abrasion and deformation, reduces the air leakage, and the structure production processing cost is low, and the installation is simple and easy to use.

Description

Technical Field

[0001] This utility model relates to the field of gas valve technology, specifically a nitrogen spring relief valve structure. Background Technology

[0002] A nitrogen spring is a precision industrial component that uses high-pressure nitrogen gas as a working medium to achieve controllable elastic force output through the storage and release of energy by compressing the gas. Its development is deeply rooted in modern industry's pursuit of efficient, stable, and predictable power sources, and is a product of the interdisciplinary evolution of mechanical engineering, materials science, and fluid mechanics.

[0003] Nitrogen springs can be connected in series to form a piping system. Many manufacturers have realized the advantages of connecting nitrogen springs in mold applications. The piping system allows users to easily monitor, control and adjust the external pressure of the mold. At the same time, there are various types of connectors, hoses and control templates for inflation / deflation valves, and users can easily configure the piping system.

[0004] The mold generates large or high-frequency vibrations during the production process, which makes the vent valve unstable and prone to loosening in actual use. After a period of use, it is easy for air to leak, and the seals are easily worn, often becoming the key location for air leakage in the pipeline system.

[0005] To address this issue, we propose a nitrogen spring relief valve structure. Utility Model Content

[0006] The purpose of this invention is to provide a nitrogen spring relief valve structure that solves the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a nitrogen spring relief valve structure, comprising a valve sleeve, a valve seat, a valve needle, and a rotating handle; the valve sleeve is provided with threads for installation on its exterior, and an ED washer is installed on the exterior of the valve sleeve, achieving end face sealing through the ED washer; the valve sleeve is provided with a stepped hole inside, an O-ring is installed on the stepped hole, and a gasket is provided on the O-ring; the valve needle is installed inside the valve seat, and the valve seat is fitted with the valve sleeve; the rotating handle is installed outside the valve sleeve, a retaining ring is provided on the exterior of the rotating handle for fixing, and a shock-absorbing pad is installed on the rotating handle.

[0008] Preferably, the valve needle has a bevel at its front end, which is used to guide the O-ring so that the valve needle slides in smoothly and fits tightly with the O-ring.

[0009] Preferably, the ED gasket is fitted onto the outside of the valve sleeve near the mounting end, achieving end-face sealing by fitting against the mounting surface.

[0010] Preferably, the shock-absorbing pad is installed on the side of the rotating handle facing the valve sleeve to form a buffer between the rotating handle and the valve sleeve, preventing the valve needle from loosening.

[0011] Preferably, the retaining ring is embedded in the annular groove on the outer circumference of the rotary handle, and the inner diameter of the retaining ring is smaller than the outer diameter of the valve sleeve at the corresponding position, so as to restrict the axial movement of the rotary handle.

[0012] Preferably, the cross-sectional diameter of the O-ring is larger than the step height of the stepped hole inside the valve sleeve, the gasket is made of metal, the thickness of the gasket is 0.5-2mm, and the stepped surface of the valve needle is in contact with the side of the gasket away from the O-ring so as to press the gasket and fix the O-ring by the step of the valve needle.

[0013] This invention provides a nitrogen spring vent valve structure. This nitrogen spring vent valve structure has the following advantages:

[0014] This nitrogen spring relief valve structure achieves a reliable and stable sealing effect, has a significant anti-vibration effect, reduces wear and deformation of the seals, reduces air leakage, and has low manufacturing and processing costs, making it simple and easy to install. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a nitrogen spring relief valve according to the present invention.

[0016] Figure 2 This is a schematic diagram of the valve needle structure in a nitrogen spring relief valve according to the present invention.

[0017] In the diagram: 1. O-ring; 2. Gasket; 3. Valve needle; 4. Valve sleeve; 5. Valve seat; 6. Rotary handle; 7. Snap ring; 8. ED washer; 9. Shock-absorbing pad. Detailed Implementation

[0018] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.

[0019] like Figure 1-2As shown, this utility model provides a technical solution: a nitrogen spring relief valve structure, including a valve sleeve 4, a valve seat 5, a valve needle 3, and a rotating handle 6; the valve sleeve 4 has threads for installation on its exterior, and an ED washer 8 is installed on the exterior of the valve sleeve 4, achieving end-face sealing through the ED washer 8. The ED washer 8 is located on the exterior of the valve sleeve 4 near the installation end, achieving end-face sealing by fitting against the installation surface; the valve sleeve 4 has a stepped hole inside, on which an O-ring 1 is installed, and a gasket 2 is provided on the O-ring 1; the valve needle 3 is installed inside the valve seat 5, and the front end of the valve needle 3 has an inclination, which is used to guide the O-ring 1, allowing the valve needle 3 to slide smoothly into and tightly fit with the O-ring 1; the valve seat 5 is installed and fitted with the valve sleeve 4; the rotating handle 6 is installed on the valve... The outer side of the sleeve 4 and the outer side of the rotating handle 6 are provided with a retaining ring 7 for fixing. The retaining ring 7 is embedded in the annular groove on the outer circumference of the rotating handle 6, and the inner diameter of the retaining ring 7 is smaller than the outer diameter of the corresponding position of the valve sleeve 4, so as to restrict the axial movement of the rotating handle 6. A shock-absorbing buffer pad 9 is installed on the rotating handle 6. The shock-absorbing buffer pad 9 is installed on the side of the rotating handle 6 facing the valve sleeve, so as to form a buffer between the rotating handle 6 and the valve sleeve 4 and prevent the valve needle 3 from loosening. The cross-sectional diameter of the O-ring 1 is larger than the step height of the step hole inside the valve sleeve 4. The gasket 2 is made of metal and the thickness of the gasket 2 is 0.5-2mm. The step surface of the valve needle 3 is in contact with the side of the gasket 2 away from the O-ring 1, so as to press the gasket 2 and fix the O-ring 1 through the step of the valve needle 3.

[0020] When in use, the nitrogen spring relief valve allows gas to pass through the inner hole of the valve sleeve 4 and the vent hole of the valve seat 5 in sequence during the venting state, and finally be discharged through the exhaust hole of the valve sleeve 4, thus achieving the venting function. In the sealing state, the valve needle 3 is pushed forward by rotating the handle 6. Because the front end of the valve needle 3 is inclined, it can smoothly guide the O-ring 1 and fit tightly with it. At the same time, the stepped surface of the valve needle 3 presses on the gasket 2, and the O-ring 1 is fixed and pressed by the gasket 2 to prevent gas from passing through and achieve sealing. In addition, the shock-absorbing pad 9 installed on the rotating handle 6 can effectively prevent the valve needle 3 from loosening, further ensuring the stability of the seal and avoiding air leakage caused by loosening.

[0021] The above description is merely an illustrative embodiment of this utility model and is not intended to limit the scope of this utility model. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of this utility model should fall within the protection scope of this utility model. Furthermore, it should be noted that the components of this utility model are not limited to the overall application described above. Each technical feature described in the specification of this utility model can be used individually or in combination as needed. Therefore, this utility model naturally covers other combinations and specific applications related to the points of this utility model.

Claims

1. A nitrogen spring relief valve structure, characterized in that, The valve includes a valve sleeve (4), a valve seat (5), a valve needle (3), and a rotating handle (6). The valve sleeve (4) has threads for installation on its exterior, and an ED washer (8) is installed on the exterior of the valve sleeve (4) to achieve end face sealing. The valve sleeve (4) has a stepped hole inside, and an O-ring (1) is installed on the stepped hole. A gasket (2) is provided on the O-ring (1). The valve needle (3) is installed inside the valve seat (5), and the valve seat (5) is installed in conjunction with the valve sleeve (4). The rotating handle (6) is installed on the exterior of the valve sleeve (4), and a retaining ring (7) for fixing is provided on the exterior of the rotating handle (6). A shock-absorbing pad (9) is installed on the rotating handle (6).

2. The nitrogen spring relief valve structure according to claim 1, characterized in that, The valve needle (3) has an angle at the front end, which is used to guide the O-ring (1) so that the valve needle (3) can slide in smoothly and fit tightly with the O-ring (1).

3. The nitrogen spring relief valve structure according to claim 1, characterized in that, The ED gasket (8) is fitted onto the outside of the valve sleeve (4) near the mounting end, and achieves end face sealing by fitting against the mounting surface.

4. The nitrogen spring relief valve structure according to claim 1, characterized in that, The shock-absorbing pad (9) is installed on the side of the rotating handle (6) facing the valve sleeve, and is used to form a buffer between the rotating handle (6) and the valve sleeve (4) to prevent the valve needle (3) from coming loose.

5. The nitrogen spring relief valve structure according to claim 1, characterized in that, The retaining ring (7) is embedded in the annular groove on the outer circumference of the rotating handle (6), and the inner diameter of the retaining ring (7) is smaller than the outer diameter of the valve sleeve (4) at the corresponding position, so as to restrict the axial movement of the rotating handle (6).

6. The nitrogen spring relief valve structure according to claim 1, characterized in that, The cross-sectional diameter of the O-ring (1) is greater than the step height of the step hole inside the valve sleeve (4). The gasket (2) is made of metal and has a thickness of 0.5-2mm. The step surface of the valve needle (3) is in contact with the side of the gasket (2) away from the O-ring (1) so as to press the gasket (2) and fix the O-ring (1) through the step of the valve needle (3).

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