Pressure reducing valve of an air gun and air gun

Abstract

The utility model discloses a pressure reducing valve and air gun of air gun, including valve body and valve core subassembly, and valve core subassembly includes adjusting part, pressure regulating spring, return spring, valve core and sealing block, is provided with installation cavity and air inlet cavity in the valve body, and the piston part of valve core is assembled in the installation cavity and forms low pressure gas chamber, and the wall of low pressure gas chamber is equipped with air inlet channel and air outlet channel, and the push rod part of valve core is through air inlet channel in clearance fit, and extends into the air inlet cavity, and is assembled with sealing block, and sealing block is slidably assembled in the air inlet cavity, and adjusting part is assembled in the one end of installation cavity away from air inlet channel, and pressure regulating spring is set between adjusting part and piston part, and adjusting part is used for adjusting the pre -tightening force of pressure regulating spring, to adjust the air pressure in low pressure gas chamber, and then realizes the air pressure of the output of air outlet formation adjustable, so can under the premise of whole not to open, initiatively adjust the pressure value of color bomb emission, to guarantee the convenience of routine maintenance.

Description

Technical Field

[0001] This utility model relates to the field of air gun technology, and in particular to a pressure reducing valve and an air gun. Background Technology

[0002] Paintball guns, as a type of air gun, use a pressure reducing valve to reduce and stabilize the high-pressure gas at a pressure value suitable for firing paintballs, ensuring that the paintball gun can fire paintballs safely, stably, and accurately.

[0003] Most paintball guns on the market use pressure relief valves that control pressure based on the dynamic balance between the disc spring force and the gas pressure. However, after a period of use, the disc spring will become less elastic due to metal fatigue, which will affect the firing of paintballs. If the pressure relief valve needs to be disassembled and a new disc spring is replaced to restore the pressure value for firing paintballs, such maintenance is quite troublesome. Utility Model Content

[0004] To address the aforementioned problems, this invention provides a pressure reducing valve for an air gun and an air gun that can actively adjust the pressure value for paintball firing without disassembling the entire unit, thus ensuring convenient daily maintenance.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0006] This utility model provides a pressure reducing valve for an air gun, including a valve body. The valve body is provided with an air inlet for connecting to a high-pressure air source and an air outlet for outputting low-pressure gas. It also includes a valve core assembly. The valve core assembly includes an adjusting component, a pressure regulating spring, a return spring, a valve core, and a sealing block. The valve body is provided with an installation cavity and an air inlet cavity for connecting to the air inlet. The valve core includes a piston portion and a push rod portion. The piston portion is movably assembled in the installation cavity to form a low-pressure air chamber. The wall of the low-pressure air chamber has an air inlet channel for connecting to the air inlet cavity and an air outlet channel for connecting to the air outlet. The push rod portion passes through the air inlet channel with a clearance fit and extends into the air inlet cavity. The sealing block is mounted on one end of the housing and is slidably mounted in the air intake cavity. The return spring is located at the end of the sealing block and the air intake cavity opposite to the air intake channel. The adjusting member is mounted on the end of the mounting cavity opposite to the air intake channel, and the pressure regulating spring is located between the adjusting member and the piston. Under the pressure of the air in the low-pressure chamber and the elastic force of the pressure regulating spring and the return spring, the sealing block switches between a blocking position that blocks the air intake channel and a ventilated position that is away from the air intake channel. The adjusting member is used to adjust the preload of the pressure regulating spring to adjust the air pressure in the low-pressure chamber, thereby achieving an adjustable setting of the air pressure output from the air outlet.

[0007] Furthermore, the adjusting component is a pressure adjusting screw, which is rotatably inserted through the end of the mounting cavity away from the air intake channel and connected to the pressure adjusting spring via a flat washer.

[0008] Furthermore, the valve body includes a main body and an end cap. The main body is provided with an air inlet, an air outlet, an air inlet cavity, an air inlet channel, and an air outlet channel. The end cap is provided with a mounting cavity with an opening on one side. The main body is fitted into the opening of the end cap in a sealed fit. The inner wall of the mounting cavity, the piston portion, and the outer wall of the main body facing the end cap together form the low-pressure air chamber.

[0009] Furthermore, an air passage nut is fitted onto the outer wall of the main body facing the end cap, and an air passage for connecting the low-pressure air chamber and the air intake cavity is provided inside the air passage nut.

[0010] Furthermore, the adjusting spring is a cylindrical helical compression spring.

[0011] This utility model provides an air gun, which includes at least the pressure reducing valve described above.

[0012] The technical solution provided by this utility model has the following beneficial effects:

[0013] The preload of the pressure regulating spring can be actively adjusted by the adjusting component to make the output pressure of the pressure reducing valve adjustable. When the pressure regulating spring experiences metal fatigue and its elasticity decreases, the compression of the pressure regulating spring can be increased by the adjusting component to compensate for the reduced elasticity. Attached Figure Description

[0014] Figure 1 The figure shown is a cross-sectional view of the pressure reducing valve of the air gun in Embodiment 1. Detailed Implementation

[0015] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. The components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0016] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0017] Example 1

[0018] Reference Figure 1Example 1 provides a pressure reducing valve for an air gun (hereinafter referred to as a pressure reducing valve) as an important accessory for paintball guns.

[0019] The pressure reducing valve of this embodiment includes a valve body 100 and a valve core assembly 200 assembled on the valve body 100. The valve body 100 is provided with an inlet 11 for connecting to a high-pressure gas source and an outlet 12 for outputting low-pressure gas. The valve core assembly 200 includes an adjusting member 4, a pressure regulating spring 5, a return spring 6, a valve core 7, and a sealing block 8.

[0020] The valve body 100 is provided with an installation cavity 21 and an air intake cavity 13 for connecting to the air intake port 11. The installation cavity 21 and the air intake cavity 13 are arranged at left and right intervals.

[0021] The valve core 7 includes a piston part 71 and a push rod part 72. The piston part 71 is movably assembled in the mounting cavity 21 and forms a low-pressure air chamber 3 through a sealing fit. The right wall of the low-pressure air chamber 3 is provided with an air inlet channel 14 for connecting to the air inlet cavity 13 and an air outlet channel 15 for connecting to the air outlet 12. At this time, the low-pressure air chamber 3 is located on the left side of the air inlet channel 14 and the air inlet cavity 13 is located on the right side of the air inlet channel 14.

[0022] The push rod 72 passes through the intake channel 14 with a clearance fit and extends into the intake chamber 13. A sealing block 8 is installed on the right end of the push rod 72 extending into the intake chamber 13. The sealing block 8 is slidably installed in the intake chamber 13, and the part of the sealing block 8 near the intake channel 14 is in clearance fit with the inner wall of the intake chamber 13. The return spring 6 is set on the inner wall of the right end of the sealing block 8 and the intake chamber 13 away from the intake channel 14. This ensures that the sealing block 8 can slide left and right in the intake chamber 13 under the pressure of the air in the low-pressure chamber 3 and the elastic force of the pressure regulating spring 5 and the return spring 6. That is, the sealing block 8 can be switched between the blocking position of the intake channel 14 and the ventilation position away from the intake channel 14.

[0023] The adjusting component 4 is mounted on the left end wall of the mounting cavity 21 away from the air inlet channel 14, and the pressure regulating spring 5 is located between the adjusting component 4 and the piston part 71. At this time, the adjusting component 4 is used to adjust the preload of the pressure regulating spring 5 to adjust the air pressure in the low pressure chamber 3, thereby realizing the adjustable setting of the air pressure output from the air outlet 12, that is, ensuring the pressure value for paintball launch.

[0024] In this embodiment, the valve body 100 includes an end cap 2 and a main body 1 arranged on the left and right. The main body 1 is provided with an air inlet 11, an air outlet 12, an air inlet chamber 13, an air inlet channel 14, and an air outlet channel 15. The end cap 2 is provided with an installation cavity 21 with an opening on one side. The main body 1 is fitted into the opening of the end cap 2 in a sealed fit. The inner wall of the installation cavity 21, the piston part 71, and the outer wall of the main body 1 facing the end cap 2 together form a low-pressure air chamber 3. The sealing block 8 is in the high-pressure air inlet chamber 13.

[0025] When the sealing block 8 needs to block the air inlet passage 14, the sealing block 8 slides from the venting position to the blocking position, and this direction of movement is the sealing direction from high pressure to low pressure. In this way, pressure self-reinforcing sealing can be achieved, so as to effectively improve the air tightness of the pressure reducing valve and the service life of the sealing block 8.

[0026] More specifically, the adjusting component 4 is a pressure adjusting screw. The adjusting component 4 is rotatably inserted through the left end wall of the mounting cavity 21 and is connected to the pressure adjusting spring 5 through the flat washer 9.

[0027] In this specific embodiment, an air passage nut 22 is fitted on the right outer wall of the main body 1 facing the end cap 2. An air intake channel 14 for connecting the low-pressure air chamber 3 and the air intake cavity 13 is provided inside the air passage nut 22. Of course, in other embodiments, the main body 1 can also be provided with a hollow air passage structure to replace the air passage nut 22, which can also achieve ventilation.

[0028] When the pressure reducing valve is working, high-pressure gas enters from the air inlet 11 of the main body 1, and then passes through the gap between the sealing block 8 and the inner wall of the air inlet chamber 13 and the air inlet channel 14 in the air nut 22 to the low-pressure air chamber 3. As the air pressure in the low-pressure air chamber 3 continues to rise, the piston part 71 of the valve core 7 is pushed to the left by the air pressure in the low-pressure air chamber 3 and the elastic force of the return spring 6. During the leftward movement of the piston part 71, it is necessary to overcome the elastic force limitation of the pressure regulating spring 5. At the same time, the push rod part 72 of the valve core 7 drives the sealing block 8 to move to the left synchronously until the air pressure in the low-pressure air chamber 3 reaches the set value. Then, the sealing block 8 abuts against the outer wall of the air inlet channel 14 and stops moving, thus closing or blocking the air inlet channel 14.

[0029] When the air pressure in the low-pressure chamber 3 is lower than the set value, the elastic force of the pressure regulating spring 5 is greater than the total force formed by the air pressure in the low-pressure chamber 3 and the elastic force of the return spring 6. Therefore, it can push the valve core 7 and the sealing block 8 to move to the right. The sealing block 8 moves away from the right side opening of the air intake channel 14, thus opening the air intake channel 14. At this time, the high-pressure gas will flow back into the low-pressure chamber 3 until the air pressure in the low-pressure chamber 3 reaches the set value, and then the right side opening of the air intake channel 14 will be closed again. This cycle repeats to stabilize the air pressure output from the outlet 12 within the pressure range suitable for paintball firing.

[0030] Additionally, when the adjusting spring 5 experiences metal fatigue and its elasticity decreases, the adjusting component 4 can be rotated clockwise to move the flat pad 9 to the right, compressing the adjusting spring 5 and restoring its elasticity. This increases the output pressure of the outlet 12 until it stabilizes within a suitable pressure range for paintball firing. Conversely, if the elasticity of the adjusting spring 5 exceeds the normal range, the adjusting component 4 can be rotated counterclockwise to move the flat pad 9 to the left, reducing the compression of the adjusting spring 5 and restoring its elasticity, thus ensuring normal paintball firing.

[0031] In summary, the preload of the pressure regulating spring 5 can be actively adjusted by adjusting component 4 to achieve adjustable output pressure of the pressure reducing valve. When the pressure regulating spring 5 experiences metal fatigue and its elasticity decreases, the compression of the pressure regulating spring 5 can be increased by adjusting component 4 to compensate for the elasticity. Moreover, the pressure value of paintball firing can be actively adjusted without disassembling the whole unit to ensure the convenience of daily maintenance.

[0032] In addition, compared with the sealing gasket of the prior art which uses a low-pressure to high-pressure sealing method, the sealing block 8 of this embodiment adopts a new sealing method from high pressure to low pressure. This can achieve pressure self-reinforcing sealing, so as to effectively improve the airtightness of the pressure reducing valve and the service life of the sealing block 8.

[0033] Of course, in other embodiments, the adjusting member 4 can also adopt a multi-stage adjusting structure consisting of a limiting pin and multiple limiting holes with spacing to realize the active adjustment of the preload of the pressure regulating spring 5.

[0034] Further preferably, the pressure regulating spring 5 is a cylindrical helical compression spring to replace the more expensive disc spring and effectively reduce manufacturing costs.

[0035] Example 2

[0036] Example 2 provides an air gun, which includes at least the pressure reducing valve of Example 1.

[0037] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A pressure reducing valve for an air gun, comprising a valve body, the valve body being provided with an inlet for connecting to a high-pressure air source and an outlet for outputting low-pressure gas, characterized in that: It also includes the valve core assembly; The valve core assembly includes an adjusting component, a pressure regulating spring, a return spring, a valve core, and a sealing block. The valve body contains an installation cavity and an intake cavity for communicating with the air inlet. The valve core includes a piston portion and a push rod portion. The piston portion is movably mounted in the installation cavity to form a low-pressure chamber. The wall of the low-pressure chamber has an intake channel for communicating with the intake cavity and an outlet channel for communicating with the air outlet. The push rod portion passes through the intake channel with a clearance fit and extends into the intake cavity. The sealing block is mounted on one end of the push rod portion extending into the intake cavity, and the sealing block is slidably mounted in the intake cavity. The return spring is located at the end of the sealing block and the intake cavity opposite to the intake channel. The adjusting component is assembled on one end of the mounting cavity away from the air intake channel, and the pressure regulating spring is disposed between the adjusting component and the piston portion; Under the pressure of the air in the low-pressure chamber and the elastic force of the pressure regulating spring and the return spring, the sealing block switches between a blocking position that blocks the air intake channel and a ventilating position that is away from the air intake channel. The adjusting component is used to adjust the preload of the pressure regulating spring to adjust the air pressure in the low-pressure chamber, thereby achieving an adjustable setting for the air pressure output from the outlet.

2. The pressure reducing valve of the air gun according to claim 1, characterized in that: The adjusting component is a pressure adjusting screw, which is rotatably inserted through the end of the mounting cavity away from the air intake channel and connected to the pressure adjusting spring via a flat washer.

3. The pressure reducing valve of the air gun according to claim 1 or 2, characterized in that: The valve body includes a main body and an end cap. The main body is provided with an air inlet, an air outlet, an air inlet cavity, an air inlet channel, and an air outlet channel. The end cap is provided with a mounting cavity with an opening on one side. The main body is fitted into the opening of the end cap in a sealed fit. The inner wall of the mounting cavity, the piston portion, and the outer wall of the main body facing the end cap together form the low-pressure air chamber.

4. The pressure reducing valve of the air gun according to claim 3, characterized in that: An air passage nut is fitted on the outer wall of the main body facing the end cap, and an air intake channel for connecting the low-pressure air chamber and the air intake cavity is provided inside the air passage nut.

5. The pressure reducing valve of the air gun according to claim 1 or 2, characterized in that: The pressure regulating spring is a cylindrical helical compression spring.

6. An air gun, characterized in that: It includes at least the pressure reducing valve as described in any one of claims 1-5.

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