Precise high-pressure gas reducing valve for gas gun

Abstract

The utility model relates to the technical field of gas pressure reduction, in particular to a precise high-pressure gas pressure reducing valve for a gas gun. The check valve comprises a valve body, the device further comprises a piston, a check ring and a spring. The check ring is arranged at one end of the valve body and located in the valve body. The piston is arranged in the valve body and located in a space formed between the check ring and the valve body. And the spring is arranged in a space formed between the valve body and the piston. According to the pressure reducing valve, the valve body is directly connected with the output end of high-pressure bottled gas, so that air in a high-pressure gas bottle is output from the check ring after being decompressed through the piston, and the problems that an existing pressure reducing valve is poor in universality and the pressure reducing adjusting method of the existing pressure reducing valve is complex are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas pressure reduction, and particularly relates to a precision high-pressure gas pressure reducing valve for an air gun. Background Art

[0002] With the continuous development of industrial technology, gases are increasingly widely used in various fields, and the safety and stability of high-pressure gas pipelines are crucial for the operation of the entire system. As a device specifically used to reduce the working pressure of pipelines, the main function of a high-pressure gas pressure reducing valve is to reduce and stabilize the high-pressure gas to a set value to meet the gas pressure requirements of different systems.

[0003] In the prior art, it is often necessary to specifically design a gas pressure reducing valve for a pipeline, so that a gas pressure reducing valve can only be applied to one pipeline, with poor versatility, and the pressure reduction adjustment method is complex and the learning cost is relatively high. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art, adapt to the actual needs, and provide a precision high-pressure gas pressure reducing valve for an air gun, so as to solve the problems that the existing gas pressure reducing valve can only be applied to one pipeline, with poor versatility, and the pressure reduction adjustment method is complex and the learning cost is relatively high.

[0005] In order to achieve the purpose of the utility model, the technical scheme adopted by the utility model is as follows:

[0006] Design a precision high-pressure gas pressure reducing valve for an air gun, including a valve body; also including a piston, a retaining ring, and a spring; the retaining ring is arranged at one end of the valve body and inside the valve body; the piston is arranged inside the valve body and in the space formed between the retaining ring and the valve body; the spring is arranged in the space formed between the valve body and the piston

[0007] Preferably, the valve body includes: an input space, a first gas transmission channel, and a pressure reduction space; the input space is a space formed by the inward depression at one end of the valve body; the pressure reduction space is a space formed by the inward depression at the other end of the valve body; the first gas transmission channel is a channel formed by the gap at the central axis of the valve body for conveying air, and the input space and the pressure reduction space are interconnected through the first gas transmission channel.

[0008] Preferably, the piston includes a piston rod and a gasket; the piston rod is disposed inside the valve body, the piston rod is sealingly connected to the valve body, and the piston rod is located within the pressure reduction space; a gasket is disposed on one side of the piston rod, the gasket is adhesively connected to the piston rod, and the gasket is in contact with one end of the first air delivery channel; the spring is disposed within the space formed between the piston rod and the valve body, and the spring is press-fitted to the piston rod and the valve body.

[0009] Preferably, a second air delivery channel is provided at the central axis of the piston rod, the second air delivery channel is a channel formed by the internal void of the piston rod capable of delivering air, and one side of the second air delivery channel communicates with the pressure reduction space; an air inlet hole communicating the second air delivery channel and the first air delivery channel is provided on the other side of the piston rod, and the pressure reduction space communicates with the first air delivery channel and the input space through the second air delivery channel and the air inlet hole provided on the piston rod.

[0010] Preferably, the retaining ring is disposed inside the valve body, and the retaining ring is located within the pressure reduction space, and the retaining ring is joined to the valve body.

[0011] Preferably, a standard 0.825 - 14 NGO thread is provided at one end of the valve body, and the standard 0.825 - 14 NGO thread is provided on the inner wall of the input space.

[0012] Preferably, an external thread is provided at one end of the valve body within the pressure reduction space, and the external thread is provided on the outer side of the valve body.

[0013] Advantages of the present utility model:

[0014] 1. By connecting high-pressure bottled gas through the standard 0.825 - 14 NGO thread provided on the inner wall of the input space of the valve body, and by docking with different product structures through the external thread provided on the outer side of one end of the pressure reduction space of the valve body, the problem that the existing precision high-pressure gas pressure reducing valve for air guns can only be applied to one type of pipeline and has poor versatility is solved;

[0015] 2. By inputting high-pressure air from the input space, reaching the pressure reduction space after passing through the first air delivery channel, and then reducing the air pressure through the piston and spring within the pressure reduction space and outputting it from the retaining ring, the problem that the existing precision high-pressure gas pressure reducing valve for air guns has a complex pressure reduction adjustment method is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a three-dimensional structural schematic diagram of the present utility model;

[0017] Figure 2The following shows a schematic side three-dimensional structure diagram of the present utility model;

[0018] Figure 3 The following shows a schematic cross-sectional structure diagram of the present utility model;

[0019] Figure 4 The following shows a schematic cross-sectional structure diagram of the piston of the present utility model.

[0020] The reference signs in the drawings are: 1, valve body; 2, piston; 3, retaining ring; 4, spring; 101, input space; 102, first air delivery channel; 103, pressure reduction space; 201, piston rod; 202, gasket; 203, second air delivery channel. Detailed implementation manners

[0021] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0022] Please refer to Figures 1-4 , the present utility model provides an embodiment: a precision high-pressure gas pressure reducing valve for an air gun, including a valve body 1; further including a piston 2, a retaining ring 3, and a spring 4; the retaining ring 3 is arranged at one end of the valve body 1 and inside the valve body 1; the piston 2 is arranged inside the valve body 1 and in the space formed between the retaining ring 3 and the valve body 1; the spring 4 is arranged in the space formed between the valve body 1 and the piston 2.

[0023] Please refer to Figure 3 , in this embodiment, the valve body 1 includes an input space 101, a first air delivery channel 102, and a pressure reduction space 103; the input space 101 is a space formed by inward depression at one end of the valve body 1; the pressure reduction space 103 is a space formed by inward depression at the other end of the valve body 1; the first air delivery channel 102 is a channel formed by a gap at the central axis of the valve body 1 for delivering air, and the input space 101 and the pressure reduction space 103 are interconnected through the first air delivery channel 102.

[0024] Please refer to Figure 3 and Figure 4 , in this embodiment, the piston 2 includes a piston rod 201 and a gasket 202; the piston rod 201 is arranged inside the valve body 1, the piston rod 201 is sealingly connected to the valve body 1, and the piston rod 201 is located in the pressure reduction space 103; a gasket 202 is arranged on one side of the piston rod 201, the gasket 202 is adhesively connected to the piston rod 201, and the gasket 202 is in contact with one end of the first air delivery channel 102; the spring 4 is arranged in the space formed between the piston rod 201 and the valve body 1, and the spring 4 is press-fittedly connected to the piston rod 201 and the valve body 1.

[0025] Please refer to FIGS. 3 and Figure 4 In this embodiment, a second air delivery channel 203 is provided at the central axis of the piston rod 201. The second air delivery channel 203 is a channel formed by the internal void of the piston rod 201 capable of delivering air. One side of the second air delivery channel 203 is communicated with the pressure reduction space 103; an air inlet hole communicating the second air delivery channel 203 and the first air delivery channel 102 is opened on the other side of the piston rod 201. The pressure reduction space 103 is communicated with the first air delivery channel 102 and the input space 101 through the second air delivery channel 203 and the air inlet hole opened on the piston rod 201; the retaining ring 3 is disposed inside the valve body 1, and the retaining ring 3 is located in the pressure reduction space 103, and the retaining ring 3 is joined and connected to the valve body 1; one end of the valve body 1 is provided with a standard 0.825 - 14 NGO thread, and the standard 0.825 - 14 NGO thread is opened on the inner wall of the input space 101; the valve body 1 is provided with an external thread at one end of the pressure reduction space 103, and the external thread is opened on the outside of the valve body 1.

[0026] During operation, first connect the high-pressure bottled gas to the standard 0.825 - 14 NGO thread on the inner wall of the input space 101 provided on the valve body 1, and then dock the different product structures that need to use high-pressure gas with the external thread on the outside of one end of the pressure reduction space 103 provided on the valve body 1. The gas in the high-pressure bottled gas passes through the input space 101, the first air delivery channel 102, the gasket 202, and the second air delivery channel 203 and is output from the retaining ring 3;

[0027] When the gas pressure in the precision high-pressure gas pressure reducing valve for air guns exceeds the set value, the pressure above the piston 2 will push the piston 2 towards the retaining ring 3, compressing the spring 4, increasing the gas chamber on one side of the piston 2, reducing the gas flow rate, so that the pressure is maintained within the set range;

[0028] When the gas pressure in the precision high-pressure gas pressure reducing valve for air guns is lower than the set value, due to the reduction of the pressure on the piston 2, the spring 4 releases the stored energy, pushing the piston 2 towards the first air delivery channel 102, reducing the volume of the gas chamber on one side of the piston 2, increasing the gas flow rate. By reducing the flow cross-sectional area and increasing the flow rate, excessive gas can be quickly released to reduce the pressure, so as to adjust to the set pressure.

[0029] Connect the high-pressure bottled gas through the standard 0.825-14 NGO thread opened on the inner wall of the input space on the valve body, and dock with different product structures through the external thread opened on the outside of one end of the pressure reduction space on the valve body, so as to solve the problem that the existing precision high-pressure gas pressure reducing valve for air guns can only be applied to one kind of pipeline and has poor versatility. By inputting high-pressure air from the input space, reaching the pressure reduction space after passing through the first gas transmission channel, and then reducing the air pressure through the piston and spring in the pressure reduction space and outputting it from the retaining ring, the problem that the existing precision high-pressure gas pressure reducing valve for air guns has a complex pressure reduction adjustment method is solved.

[0030] Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A precision high-pressure gas pressure reducing valve for an air gun, comprising a valve body (1), characterized in that: It also includes a piston (2), a retaining ring (3), and a spring (4); the retaining ring (3) is arranged at one end of the valve body (1) and is located inside the valve body (1); the piston (2) is arranged inside the valve body (1) and is located in a space formed between the retaining ring (3) and the valve body (1); and the spring (4) is arranged in a space formed between the valve body (1) and the piston (2).

2. The precision high-pressure gas pressure reducing valve for an airgun according to claim 1, characterized in that: The valve body (1) comprises: an input space (101), a first air delivery channel (102), and a decompression space (103); the input space (101) is a space formed by one end of the valve body (1) being recessed inwardly; the decompression space (103) is a space formed by the other end of the valve body (1) being recessed inwardly; the first air delivery channel (102) is a channel capable of conveying air formed by a gap at the central axis of the valve body (1), and the input space (101) and the decompression space (103) are connected to each other via the first air delivery channel (102).

3. The precision high-pressure gas pressure reducing valve for an airgun according to claim 2, characterized in that: The piston (2) comprises: a piston rod (201) and a sealing gasket (202); the piston rod (201) is arranged inside the valve body (1), the piston rod (201) is sealedly connected to the valve body (1), and the piston rod (201) is located in the decompression space (103); the sealing gasket (202) is arranged on one side of the piston rod (201), the sealing gasket (202) is adhesively connected to the piston rod (201), and the sealing gasket (202) is in contact with one end of the first gas transmission channel (102); the spring (4) is arranged in the space formed between the piston rod (201) and the valve body (1), and the spring (4) is press-fittedly connected to the piston rod (201) and the valve body (1).

4. The precision high-pressure gas pressure reducing valve for an airgun according to claim 3, characterized in that: A second air delivery channel (203) is provided at the central axis of the piston rod (201); the second air delivery channel (203) is a channel capable of delivering air formed by the internal gap of the piston rod (201); one side of the second air delivery channel (203) is connected to the decompression space (103); an air inlet hole connecting the second air delivery channel (203) and the first air delivery channel (102) is provided on the other side of the piston rod (201); the decompression space (103) is connected to the first air delivery channel (102) and the input space (101) via the second air delivery channel (203) and the air inlet hole provided on the piston rod (201).

5. The precision high-pressure gas pressure reducing valve for air gun according to claim 2, characterized in that: The retaining ring (3) is arranged inside the valve body (1), and the retaining ring (3) is located in the decompression space (103), and the retaining ring (3) is joined and connected to the valve body (1).

6. The precision high-pressure gas pressure reducing valve for an airgun according to claim 2, characterized in that: One end of the valve body (1) is provided with a standard 0.825-14NGO thread, and the standard 0.825-14NGO thread is provided on the inner wall of the input space (101).

7. The precision high-pressure gas pressure reducing valve for an airgun according to claim 2, characterized in that: The valve body (1) is provided with an external thread at one end of the decompression space (103), and the external thread is provided on the outside of the valve body (1).

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