Air inlet valve structure of air gun

Abstract

The utility model discloses an air inlet valve structure of an air gun, which relates to the field of air inlet valves of air guns and comprises a differential pressure pipe, internal threads are arranged at the rear end of the inner side face of the differential pressure pipe, the rear end of the differential pressure pipe is matched with the internal threads and connected with a separation pipe, a connecting pipe is fixedly connected to the rear end of the separation pipe, external threads are arranged on the side face of the connecting pipe, and internal threads are arranged on the inner wall and the outer wall of the differential pressure pipe. The front end of the differential pressure pipe is connected with a stud in a screwed mode, a fixed valve element is arranged in the front end of the differential pressure pipe, and a movable valve element is fixedly connected to the rear end of the differential pressure pipe. Through the cooperation of the fixed valve core and the movable valve core, the gas inlet and outlet can be conveniently controlled, the practicability is improved, the gas gun shooting gas discharging capacity is achieved, through the cooperation of the differential pressure pipe and the separation pipe, the abraded valve core can be conveniently replaced, the practicability is improved, and the capacity of maintaining the airtightness of the gas inlet valve by replacing the valve core is achieved; finally, the problem that air tightness is reduced due to abrasion caused by long-time use is solved.

Description

Technical Field

[0001] The utility model relates to the field of air gun intake valves, in particular to an air gun intake valve structure. Background Art

[0002] The air intake valve mechanism of an air gun is an important component that provides the firing power of the air gun. The quality of the air intake valve mechanism directly affects the power of the air gun firing. The existing structure realizes inflation and reset sealing through the air pressure difference formed after the air gun releases air and the elastic force of the disc spring. During its operation, the valve core in the valve will make reciprocating motion and be subjected to a large thrust. Long-term use will inevitably cause wear, reduce air tightness, and affect the firing power of the air gun. Therefore, the utility model makes improvements to the above problems. Utility Model Content

[0003] The purpose of the utility model is to solve the shortcomings of the prior art and to propose an air intake valve structure for an air gun.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] An air intake valve structure for an air gun includes a pressure differential tube, wherein the rear end of the inner side surface of the pressure differential tube is provided with an internal thread, the rear end of the pressure differential tube is connected to a separator tube via the internal thread, the rear end of the separator tube is fixedly connected to a connecting tube, the outer wall of the connecting tube is provided with an external thread, the front end of the inner side surface of the pressure differential tube is provided with an internal thread, and the front end of the pressure differential tube is screwed and connected with a stud bolt.

[0006] Preferably, a fixed valve core is provided inside the front end of the pressure differential tube, the front end face of the fixed valve core abuts against the rear end of the stud bolt, an air inlet hole is radially opened at the front end of the outer side face of the pressure differential tube, a radial air inlet channel is opened on the fixed valve core aligned with the air inlet hole on the pressure differential tube, an axial air inlet channel is opened in the middle of the back side of the fixed valve core, the radial air inlet channel is connected with the axial air inlet channel, and a No. 4 sealing ring is provided on the outer wall of the fixed valve core at the front and rear ends of the radial air inlet channel on the fixed valve core, and the No. 4 sealing ring is tightly attached to the inner wall of the pressure differential tube.

[0007] Preferably, the back of the fixed valve core is in contact with a rubber pad, the rubber pad is embedded in the front end surface of the pressure column, the rear end of the pressure column is fixedly connected to the movable valve core, and the rear end of the movable valve core is fixedly connected to the separating disk.

[0008] Preferably, a radial air outlet is radially opened on the side surface of the pressure column, an axial air outlet is opened in the middle of the rear end of the pressure column, and the radial air outlet and the axial air outlet are connected.

[0009] Preferably, the movable valve core and the separating disk are aligned with the axial air outlet of the pressure column to form an air outlet hole, the front end of the outer side surface of the movable valve core is provided with a No. 3 sealing ring, the No. 3 sealing ring is tightly against the inner wall of the pressure differential tube, the middle of the outer side surface of the separating disk is provided with a No. 2 sealing ring, the No. 2 sealing ring is tightly against the inner wall of the separating tube, and two No. 1 sealing rings for fitting and abutting against the inner wall of the gun barrel are symmetrically provided in the middle of the outer side surface of the separating tube.

[0010] Preferably, a disc spring is provided between the inner top surface of the separation tube and the front of the separation plate, and a limiting ring is fixedly connected to the inner rear end of the connecting tube.

[0011] Compared with the existing technology, the beneficial effects of the utility model are: the utility model facilitates the control of gas inlet and outlet through the cooperation of the fixed valve core and the movable valve core, improves practicality, and realizes the ability of the air gun to release gas, and then facilitates the replacement of worn valve cores through the cooperation of the pressure differential tube and the separation tube, improves practicality, and realizes the ability to maintain the airtightness of the intake valve by replacing the valve core, and finally solves the problem of reduced airtightness caused by wear and tear due to long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0013] Figure 1 This is a schematic diagram of the overall three-dimensional structure proposed by the utility model;

[0014] Figure 2 This is a schematic diagram of the overall structure of one side proposed by the utility model;

[0015] Figure 3 This is a schematic diagram of the three-dimensional mechanism for fixing the valve core proposed in the present utility model;

[0016] Figure 4 This is a schematic diagram of the three-dimensional mechanism of the movable valve core proposed in the utility model;

[0017] Figure 5 This is a schematic diagram of the three-dimensional structure of the stud bolt proposed in the utility model;

[0018] Figure 6 This is a schematic diagram of the overall one side structure anatomy proposed by the utility model.

[0019] Serial numbers in the figure: 1. Pressure differential tube; 2. Separator tube; 3. Connecting tube; 4. Stud bolt; 5. Fixed valve core; 6. Movable valve core; 7. Separator plate; 8. Pressure column; 9. Rubber gasket; 10. No. 1 sealing ring; 11. No. 2 sealing ring; 12. No. 3 sealing ring; 13. No. 4 sealing ring; 14. Disc spring; 15. Limit ring. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] Example: See Figure 1-6 The utility model relates to an air intake valve structure of an air gun, comprising a pressure differential tube 1, an internal thread is provided at the rear end of the inner side surface of the pressure differential tube 1, the rear end of the pressure differential tube 1 is connected to a separator tube 2 through the internal thread, the rear end of the separator tube 2 is fixedly connected to a connecting tube 3, an external thread is provided on the outer wall of the connecting tube 3, an internal thread is provided at the front end of the inner side surface of the pressure differential tube 1, and a stud bolt 4 is screwed and connected to the front end of the pressure differential tube 1. The cooperation between the pressure differential tube 1 and the separator tube 2 facilitates the replacement of the worn valve core, thereby improving practicality; a fixed valve core 5 is provided inside the front end of the pressure differential tube 1, and the front end surface of the fixed valve core 5 abuts against the rear end of the stud bolt 4, an air inlet hole is radially provided at the front end of the outer side surface of the pressure differential tube 1, and the fixed valve core 5 is aligned with the pressure differential tube 1 is provided with a radial air inlet duct, and an axial air inlet duct is provided in the middle of the back of the fixed valve core 5. The radial air inlet duct is connected to the axial air inlet duct, and a No. 4 sealing ring 13 is provided on the outer wall of the fixed valve core 5 at the front and rear ends of the radial air inlet duct on the fixed valve core 5. The No. 4 sealing ring 13 is tightly attached to the inner wall of the pressure differential tube 1. Through the cooperation of the No. 4 sealing ring 13 and the air inlet duct, it is convenient to guide the gas flow and improve the stability; the back of the fixed valve core 5 is abutted with a rubber pad 9, and the rubber pad 9 is embedded in the front end surface of the pressure column 8. The rear end of the pressure column 8 is fixedly connected to the mobile valve core 6, and the rear end of the mobile valve core 6 is fixedly connected to the separating disk 7. Through the cooperation of the rubber pad 9 and the pressure column 8, it is convenient to block the air inlet duct and improve the practicality.

[0022] The cam 12 is provided on the upper and lower sides of the cylinder 14 so that the cylinder 14 can rotate with the cylinder 14 to rotate, thereby making the cylinder 14 closer and closer to the cylinder 14. The cam 12 is provided on the upper and lower sides of the cylinder 14 so that the cylinder 14 can rotate with the cylinder 14 to rotate.

[0023] Working principle: When the present invention is used, the air inlet valve is arranged between the air pressure tank and the air release chamber of the air gun. At this time, due to the No. 1 sealing ring 10, the air pressure tank and the air release chamber are separated. When the air release chamber is in a normal pressure environment, the pressure at one end of the air pressure tank is greater than that at one end of the air release chamber, and the high-pressure gas pushes the movable valve core 6 open. The high-pressure gas enters the air chamber composed of the pressure differential tube 1, the No. 4 sealing ring 13 and the No. 3 sealing ring 12 through the air inlet duct in the fixed valve core 5, and then enters the air release chamber through the air outlet duct on the movable valve core 6. After a certain pressure is reached, the disc spring 14 resets the movable valve core 6, the rubber pad 9 blocks the air inlet duct, and the high-pressure gas stops moving. When the air gun is fired, after the high-pressure gas in the air release chamber is released, the above movement will be repeated to re-inflate, thereby realizing the ability to continuously fire and release gas. When the valve core is worn, unscrew the pressure differential tube 1 and the separating tube 2 and replace the valve core.

[0024] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An air intake valve structure for an air gun, comprising a pressure differential tube (1), characterized in that: The rear end of the inner side surface of the pressure differential tube (1) is provided with an internal thread, the rear end of the pressure differential tube (1) is connected to the separation tube (2) via the internal thread, the rear end of the separation tube (2) is fixedly connected to the connection tube (3), the outer wall of the connection tube (3) is provided with an external thread, the front end of the inner side surface of the pressure differential tube (1) is provided with an internal thread, and the front end of the pressure differential tube (1) is screwed and connected with a stud bolt (4).

2. The air intake valve structure of an air gun according to claim 1, characterized in that: A fixed valve core (5) is provided inside the front end of the pressure differential tube (1), and the front end face of the fixed valve core (5) abuts against the rear end of the stud bolt (4). An air inlet hole is radially opened at the front end of the outer side face of the pressure differential tube (1). The fixed valve core (5) is aligned with the air inlet hole on the pressure differential tube (1) and is provided with a radial air inlet passage. An axial air inlet passage is opened in the middle of the back face of the fixed valve core (5), and the radial air inlet passage is communicated with the axial air inlet passage. No. 4 sealing rings (13) are provided on the outer walls of the fixed valve core (5) at the front and rear ends of the radial air inlet passage on the fixed valve core (5), and the No. 4 sealing rings (13) are tightly attached to the inner wall of the pressure differential tube (1).

3. The air intake valve structure of an air gun according to claim 2, characterized in that: The back of the fixed valve core (5) is in contact with a rubber pad (9), and the rubber pad (9) is embedded in the front end surface of the pressure column (8). The rear end of the pressure column (8) is fixedly connected to the movable valve core (6), and the rear end of the movable valve core (6) is fixedly connected to the separating disk (7).

4. The air intake valve structure of an air gun according to claim 3, characterized in that: A radial air outlet is radially opened on the side surface of the pressure column (8), and an axial air outlet is opened in the middle of the rear end of the pressure column (8), and the radial air outlet and the axial air outlet are connected.

5. The air intake valve structure of an air gun according to claim 3, characterized in that: The movable valve core (6) and the separating plate (7) are aligned with the axial air outlet of the pressure column (8) to form an air outlet hole. The front end of the outer side surface of the movable valve core (6) is provided with a No. 3 sealing ring (12). The No. 3 sealing ring (12) is in close contact with the inner wall of the pressure differential tube (1). The middle of the outer side surface of the separating plate (7) is provided with a No. 2 sealing ring (11). The No. 2 sealing ring (11) is in close contact with the inner wall of the separating tube (2). The middle of the outer side surface of the separating tube (2) is symmetrically provided with two No. 1 sealing rings (10) for contacting with the inner wall of the gun barrel.

6. The air intake valve structure of an air gun according to claim 5, characterized in that: A disc spring (14) is provided between the inner top surface of the separation tube (2) and the front of the separation plate (7), and a limiting ring (15) is fixedly connected to the inner rear end of the connecting tube (3).

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