Linkage device of air valve

Abstract

A linkage device for a gas valve. An inflation sleeve is installed at the mouth of a gas cylinder. A driving member impacts the gas cylinder, and a thimble pierces the gas cylinder to cause the gas cylinder to release gas into the inflation sleeve. A propulsion cylinder is communicated with the inflation sleeve. The thimble is arranged in the inflation sleeve, and a valve core is arranged in the inflation sleeve. The inner end of a push rod abuts against the valve core. The push rod drives the valve core to move inwards under an external force to open the valve core. As the gas in the propulsion cylinder is discharged outwards through the air outlet, the valve core and the push rod can be reset outwards to close the valve core. Driven by the driving member, the linkage device for the gas valve can release the gas in the gas cylinder into the inflation sleeve. After the push rod drives the valve core to open, the gas in the inflation sleeve enters the propulsion cylinder. When the intake air volume is large enough, the purpose of impacting with a large thrust can be achieved. After the impact is completed, the valve core can be closed to await the next firing. This linkage device is not only compact in structure, but also stable and reliable in operation. The gas in one gas cylinder can be used for multiple firings.

Description

Technical Field

[0001] The present invention relates to a pneumatic mechanism, and more particularly to a linkage device for a pneumatic valve. Background Art

[0002] Linkage devices for pneumatic valves are widely used in pneumatic devices. For example, a linkage device for a pneumatic valve is used as a core mechanism in a common pneumatic impact hammer. A pneumatic impact hammer is a mechanical tool that uses compressed air as power, instantaneously releases it, and pushes the internal hammer head to complete the impact. It has the advantages of large impact force, low noise, convenient installation, and can be used in explosion-proof, multi-dust, humid and other environments. Pneumatic impact hammers are widely used in industrial, agricultural and construction industries. Most of the existing linkage devices for pneumatic valves have a non-compact structure and low action reliability, which directly affects the working stability of the pneumatic device. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a linkage device for a pneumatic valve with a compact structure and reliable action in view of the above-mentioned prior art status.

[0004] The technical solution adopted by the present invention to solve the above technical problem is as follows: The linkage device for the pneumatic valve is characterized by comprising:

[0005] An air cylinder;

[0006] An inflation sleeve installed at the mouth of the air cylinder, and the inflation sleeve has an exhaust port;

[0007] A driving member for impacting the air cylinder to cause the air cylinder to release gas into the inflation sleeve;

[0008] A propulsion cylinder having an air inlet and an air outlet, the air inlet being communicated with the exhaust port of the inflation sleeve, and the air outlet being communicated with the outside;

[0009] A thimble disposed in the inflation sleeve, the tip of the thimble facing the mouth of the air cylinder. Under the action of the driving member, the air cylinder and the thimble move relative to each other, so that the mouth of the air cylinder is punctured by the thimble, and then the gas in the air cylinder enters the inflation sleeve;

[0010] A valve core disposed in the inflation sleeve. When the valve core is in the open state, the gas in the inflation sleeve enters the propulsion cylinder through the exhaust port. When the valve core is in the closed state, the inflation sleeve is isolated from the propulsion cylinder; and

[0011] A push rod, the inner end of which is disposed in the inflation sleeve and abuts against the valve core. The push rod drives the valve core to move inward to open the valve core under the action of an external force. As the gas in the propulsion cylinder is discharged outward through the air outlet, the valve core and the push rod can be reset outward to close the valve core.

[0012] In order to enable the valve core to reset smoothly when the external force disappears, a valve core spring is installed in the inflation sleeve. When the valve core is in the open state, the valve core spring is in an energy storage state, causing the valve core to have a tendency to close. When the external force acting on the ejector rod disappears, the valve core spring can drive the valve core and the ejector rod to reset outward synchronously to close the valve core.

[0013] In order to enable the gas in the inflation sleeve to enter the propulsion cylinder smoothly, a connecting air valve is installed between the exhaust port of the inflation sleeve and the intake port of the propulsion cylinder.

[0014] To avoid air leakage at the connection of the connecting air valve, it is further preferred that sealing rings are installed between the connecting air valve and the inflation sleeve and between the connecting air valve and the propulsion cylinder.

[0015] As a preferred solution, the gas cylinder is arranged in the housing. The driving member includes a button, a first connecting rod, a button spring, a release trigger, a fastening base, a release spring, a pressing block, a release trigger spring and a pull rod. The button is rotatably arranged outside the housing. The fastening base is installed at the rear end of the housing. The pressing block, the release spring and the pull rod are arranged inside the housing. The release trigger is rotatably arranged on the housing. The first connecting rod is arranged between the button and the first end of the release trigger. The second end of the release trigger is used to abut against the pressing block. The front end of the pull rod abuts against the tail of the gas cylinder. The pressing block is movably arranged on the pull rod. The release spring is arranged between the fastening base and the pressing block. When the button is pressed down, the release trigger disengages from the pressing block under the pressing of the first connecting rod, causing the pressing block to move forward under the action of the release spring, thereby pushing the gas cylinder towards the ejector pin to open the bottle mouth. When the button is released, the button resets under the action of the button spring, and the release trigger resets under the action of the release trigger spring. In this way, pressing the button can cause the pressing block to impact the gas cylinder, and the gas cylinder releases gas into the inflation sleeve, which is very convenient to operate.

[0016] Further preferably, the button abuts against the middle of the first connecting rod, the first end of the first connecting rod abuts against the first end of the release trigger, the second end of the first connecting rod is connected to the first end of the second connecting rod, the second end of the second connecting rod is connected to the first end of the third connecting rod, and a return elastic piece, a first transmission rod and a second transmission rod are further included. Both the first transmission rod and the second transmission part are rotating parts. The second end of the third connecting rod has a stop portion that abuts against the first end of the first transmission rod. The second end of the first transmission rod abuts against the outer end of the ejector rod. During the process of pressing down the button, through the linkage of the first connecting rod, the second connecting rod and the third connecting rod, the second end of the first transmission rod is driven to act on the ejector rod to move the ejector rod inward, thereby opening the valve core. The return elastic piece and the second transmission rod are arranged on both sides of the second end of the third connecting rod. A piston and a piston return spring are installed in the propulsion cylinder. In the state where sufficient gas in the inflation sleeve enters the propulsion cylinder, the gas in the propulsion cylinder drives the piston to move and open the air outlet, and the piston return spring is in an energy storage state. And during the movement of the piston, the second transmission rod is driven to rotate, so that the stop portion of the third connecting rod is disengaged from the first transmission rod. The valve core is closed accordingly and drives the ejector rod and the first transmission rod to reset. And the piston return spring can drive the piston to reset as the gas in the propulsion cylinder is released. As the acting force of the piston on the second transmission rod disappears, the third connecting rod and the second transmission rod are reset under the action of the return elastic piece. In this way, after sufficient gas in the inflation sleeve enters the propulsion cylinder, the valve core can be closed as the piston moves.

[0017] Further preferably, a first pin shaft is installed on the first transmission rod, and the first transmission rod can rotate around the first pin shaft. A second pin shaft is installed on the second transmission rod, and the second transmission rod can rotate around the second pin shaft.

[0018] Preferably, the ejector pin is fixed in the inflation sleeve.

[0019] As another preferred solution, the driving part is a gas cylinder cover screwed on the inflation sleeve. The gas cylinder is arranged in the gas cylinder cover, and a spring is installed between the tail of the gas cylinder and the gas cylinder cover. In this way, by screwing the gas cylinder cover tightly, the gas cylinder can be driven to move inward, thereby enabling the ejector pin to pierce the bottle mouth, and the gas in the gas cylinder enters the inflation sleeve.

[0020] Further preferably, the linkage device of the air valve further includes a housing, and a pressing rod assembly and a firing trigger are installed on the housing. The firing trigger can act on the pressing rod assembly, so that the pressing rod assembly generates the external force on the ejector rod. In this way, firing can be completed by operating the firing trigger, and the operation is very convenient.

[0021] Further preferably, an exhaust passage is formed in the outer shell, a push rod is installed in the exhaust passage, a striker is installed in the propulsion cylinder. When the striker extends outwards under the impact of the gas in the propulsion cylinder, the airflow in the propulsion cylinder enters the exhaust passage and drives the push rod to act on the pressure rod assembly, thereby resetting the ejector rod, and the valve core is closed accordingly. In this way, after the impact on the striker is completed, the pressure rod assembly can be driven by the push rod to act, so that the ejector rod can be reset, and the valve core can be closed accordingly.

[0022] The pressure rod assembly can have various structures. Preferably, the pressure rod assembly includes a lower pressing block, a compression spring and a movable head. The lower pressing block is exposed outside the outer shell. The compression spring is installed between the lower pressing block and the outer shell to keep the lower pressing block having a tendency to move outwards. The inner end of the lower pressing block abuts against the outer end of the movable head. The movable head is rotatably arranged on the outer shell, and the inner end of the movable head abuts against the outer end of the ejector rod. The movable head rotates under the action of the push rod and can reset the ejector rod.

[0023] Compared with the prior art, the advantages of the present invention are as follows: The linkage device of the air valve can release the gas in the gas cylinder into the inflation sleeve under the drive of the driving member. After the ejector rod drives the valve core to open under the action of an external force, the gas in the inflation sleeve enters the propulsion cylinder. When the intake air volume is large enough, the purpose of large-thrust impact can be achieved. After the impact is completed, the valve core can be closed to welcome the next firing. The linkage device is not only compact in structure, but also stable and reliable in operation. The gas in one gas cylinder can be used for multiple firings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of Embodiment 1 of the present invention;

[0025] Figure 2 It is an internal structural schematic diagram of Embodiment 1 of the present invention (when the button is released);

[0026] Figure 3 It is Figure 2 a schematic structural diagram of the air valve linkage device shown from another angle;

[0027] Figure 4 It is Figure 2 a structural sectional view of the air valve linkage device shown;

[0028] Figure 5 It is Figure 2 a schematic structural diagram of the air valve linkage device shown from another different angle;

[0029] Figure 6 It is an internal structural schematic diagram of Embodiment 1 of the present invention (when the button is pressed);

[0030] Figure 7 It is Figure 6Schematic diagram of the structure of the valve linkage device shown from another angle;

[0031] Figure 8 is Figure 6 Cross-sectional view of the structure of the valve linkage device shown;

[0032] Figure 9 is Figure 6 Schematic diagram of the structure of the valve linkage device shown;

[0033] Figure 10 Schematic diagram of the structure of the second embodiment of the present invention (the firing trigger is not fired);

[0034] Figure 11 is Figure 10 Cross-sectional view of the structure of the impact hammer shown;

[0035] Figure 12 Schematic diagram of the structure of the second embodiment of the present invention (the safety catch is pulled out);

[0036] Figure 13 is Figure 12 Cross-sectional view of the structure of the impact hammer shown;

[0037] Figure 14 Schematic diagram of the structure of the second embodiment of the present invention (the firing trigger is fired);

[0038] Figure 15 is Figure 14 Cross-sectional view of the structure of the impact hammer shown;

[0039] Figure 16 Schematic diagram of the structure of the second embodiment of the present invention (the firing pin is extended);

[0040] Figure 17 is Figure 16 Cross-sectional view of the structure of the impact hammer shown (the valve core is open);

[0041] Figure 18 is Figure 16 Cross-sectional view of the structure of the impact hammer shown (the valve core is closed);

[0042] Figure 19 Cross-sectional view of the second embodiment of the present invention (the firing pin is reset);

[0043] Figure 20 Cross-sectional view of the embodiment of the present invention (the firing trigger is reset). Detailed implementation manners

[0044] The present invention will be further described in detail below in conjunction with the embodiments with reference to the drawings.

[0045] Embodiment 1:

[0046] As Figures 1 to 9As shown in the figure, the air valve linkage device of this embodiment includes a gas cylinder 1, an inflation sleeve 2, a propulsion cylinder 3, a thimble 4, a valve core 5, a push rod 6, a valve core spring 7, a connecting air valve 8, a driving member, and a housing 10. Among them, the gas cylinder 1 is arranged inside the housing 10, and the gas cylinder 1 is filled with gas, such as carbon dioxide. The inflation sleeve 2 is installed at the mouth of the gas cylinder 1, and the inflation sleeve 2 has an exhaust port. The propulsion cylinder 3 has an air inlet and an air outlet 31. The air inlet is connected to the exhaust port of the inflation sleeve 2 through the connecting air valve 8, and the air outlet 31 is connected to the outside. The gas in the propulsion cylinder 3 is discharged outward through the air outlet 31.

[0047] The thimble 4, the valve core 5, the push rod 6, and the valve core spring 7 are all arranged axially inside the inflation sleeve 2, and the valve core 5 is located between the thimble 4 and the push rod 6. In this embodiment, the thimble 4 is fixed inside the inflation sleeve 2, and the tip of the thimble 4 faces the mouth of the gas cylinder 1. The driving member drives the gas cylinder 1 to move relative to the thimble 4, so that the mouth of the bottle is punctured by the thimble 4, so that the gas in the gas cylinder 1 can enter the inflation sleeve 2. The inner end of the push rod 6 abuts against the valve core 5, and the outer end of the push rod 6 extends outward from the inflation sleeve 2.

[0048] When an external force acts on the push rod 6 to move the push rod 6 inward, the push rod 6 drives the valve core 5 to move axially inward relative to the inflation sleeve 2, thereby opening the valve core 5. In the open state of the valve core 5, the gas in the inflation sleeve 2 enters the propulsion cylinder 3 through the connecting air valve 8. At this time, the valve core spring 7 is in an energy storage state and keeps the valve core 5 in a closed tendency. When the external force acting on the push rod 6 disappears, the valve core spring 7 drives the valve core 5 to move outward and reset, that is, closes the valve core 5, so that the gas in the inflation sleeve 2 cannot enter the propulsion cylinder 3. At this time, the valve core 5 drives the push rod 6 to move outward and reset synchronously.

[0049] The driving member of this embodiment includes a button 91, a first connecting rod 92, a button spring 93, a release trigger 94, a fastening base 95, a release spring 96, a pressing block 97, a release trigger spring 98, and a pull rod 99. Among them, a button rotating shaft 911 is installed on the housing 10, and the button 91 can rotate relative to the housing 10 around the button rotating shaft 911. The first connecting rod 92 has a U-shaped structure and force-receiving parts are formed at both ends. The button 91 abuts against the middle area at the top of the first connecting rod 92. The button spring 93 is installed between the button 91 and the housing 10 for resetting the button 91. A release trigger rotating shaft 941 is also installed on the housing 10, and the release trigger 94 can rotate relative to the housing 10 around the release trigger rotating shaft 941. The release trigger spring 98 is arranged between the release trigger 94 and the housing 10 for resetting the release trigger 94.

[0050] For Figure 4The direction indicated by arrow A is the forward direction. The fastening base 95 is installed at the rear end of the housing 10. The pressing block 97, the release spring 96, and the pull rod 99 are arranged inside the housing 10. The front end of the pull rod 99 abuts against the tail of the gas cylinder 1. The pressing block 97 is movably arranged on the pull rod 99, and the release spring 96 is arranged between the fastening base 95 and the pressing block 97. The first end of the release trigger 94 abuts against the first link 92, and the second end of the release trigger 94 is used to abut against the pressing block 97.

[0051] As Figure 4 shown, when the key 91 is in the released state, under the elastic force of the release trigger spring 98, the second end of the release trigger 94 abuts against the pressing block 97, preventing the pressing block 97 from moving forward. At this time, the release spring 96 is in a compressed state, causing the pressing block 97 to maintain a tendency to move forward. As Figure 6 shown, when the key 91 is pressed down, the release trigger 94 disengages from the pressing block 97 under the downward pressure of the first link 92. The pressing block 97 moves forward under the action of the release spring 96, thereby pushing the gas cylinder 1 towards the ejector pin 4, causing the needle tip of the ejector pin 4 to pierce the bottle mouth. Once the key 91 is released, the key 91 resets under the action of the key spring 93, the release trigger 94 resets under the action of the release trigger spring 98, and the release spring 96 does not reset, that is, after the gas cylinder 1 is pushed forward by the pressing block 97, it will not move backward.

[0052] Combined with Figure 5 shown, the first end of the first link 92 abuts against the first end of the release trigger 94. The second end of the first link 92 is connected to the first end of the second link 11, and the second end of the second link 11 is connected to the first end of the third link 12. The gas valve linkage device of this embodiment further includes a return spring 13, a first transmission rod 14, and a second transmission rod 15. Among them, both the first transmission rod 14 and the second transmission rod 15 are rotating parts. A first pin shaft 18 is installed on the first transmission rod 14, and the first transmission rod 14 can rotate around the first pin shaft 18. A second pin shaft 19 is installed on the second transmission rod 15, and the second transmission rod 15 can rotate around the second pin shaft 19. The first transmission rod 14 and the second transmission rod 15 form a structure similar to a seesaw. The second end of the third link 12 has a stop portion 121 that abuts against the first end of the first transmission rod 14, and the second end of the first transmission rod 14 abuts against the outer end of the ejector rod 6. The return spring piece 13 and the second transmission rod 15 are arranged on both sides of the second end of the third link 92. Thus, when the key 91 is pressed down, through the transmission of the first link 92 and the second link 11, the third link 12 is driven to extend forward. The third link 12 drives the first end of the first transmission rod 14 to move outward, that is, forward. The second end of the first transmission rod 14 moves inward, that is, backward. The first transmission rod 14 drives the ejector rod 6 to move inward, and the inward movement of the ejector rod 6 drives the valve core 5 to move inward synchronously, thereby opening the valve core 5.

[0053] As Figure 4 andFigure 8 As shown, a piston 16 and a piston return spring 17 are installed in the propulsion cylinder 3. When the valve core 5 is opened, with sufficient gas in the inflation sleeve 2 entering the propulsion cylinder 3, the pressure in the propulsion cylinder 3 increases. The gas in the propulsion cylinder 3 drives the piston 16 to move forward to open the air outlet 31, achieving the purpose of a large-thrust impact. At this time, the piston return spring 17 is in an energy storage state. As Figure 5 and Figure 9 shown, during the forward movement of the piston, the second transmission rod 15 is driven to rotate. Driven by the second transmission rod 15, the stop portion 121 of the third connecting rod 12 disengages from the first transmission rod 14. At this time, the valve core 5 is reset forward under the elastic force of the valve core spring 7, the valve core 5 closes, and the valve core 5 drives the ejector rod 6 and the first transmission rod 14 to reset. After one impact is completed, as the gas in the propulsion cylinder 3 is released, the pressure in the propulsion cylinder 3 decreases. The piston 16 is reset backward under the elastic force of the piston return spring 17, and the acting force of the piston 16 on the second transmission rod 15 disappears. The third connecting rod 12 and the second transmission rod 15 are reset under the elastic force of the reset spring piece 13, and the stop portion 121 of the third connecting rod 12 abuts against the first end of the first transmission rod 14 again to await the next firing.

[0054] The working process of the air valve linkage device in this embodiment is as follows:

[0055] Press the button 91, the release trigger 94 is released, the tip of the ejector pin 4 pierces the bottle mouth, and the gas in the gas cylinder 1 enters the inflation sleeve 2. At the same time, through the transmission of the first connecting rod 92, the second connecting rod 11, the third connecting rod 12 and the first transmission rod 14, the ejector rod 6 is driven to move inward, and then the valve core 5 is opened; after the valve core 5 is opened, the gas in the inflation sleeve 2 enters the propulsion cylinder 3 through the connecting air valve 8; then, after sufficient gas enters the propulsion cylinder 3, under the action of the gas pressure, the piston 16 is driven to move forward to open the air outlet 31, achieving the purpose of a large-thrust impact. At the same time, the piston 16 drives the second transmission rod 15 to rotate, so that the stop portion 121 of the third connecting rod 12 disengages from the first transmission rod 14, the valve core 5 closes, and the valve core 5 drives the ejector rod 6 and the first transmission rod 14 to reset; finally, after one impact is completed, the piston 16 is reset backward to reset the second transmission rod 15 and the third connecting rod 12 to await the next firing.

[0056] Embodiment 2:

[0057] As Figures 10 to 20As shown in the figure, the valve linkage device of this embodiment includes a housing 22, on which a pressure rod assembly 23 and a firing trigger 24 are installed. The driving member of this embodiment is a gas cylinder cover 20 threadedly connected to the inflation sleeve 2. The gas cylinder 1 is arranged inside the gas cylinder cover 20, and a spring 21 is installed between the tail of the gas cylinder 1 and the gas cylinder cover 20. A safety buckle 29 is installed between the gas cylinder cover 20 and the housing 22. When the safety buckle 29 is not pulled out, the gas cylinder cover 20 cannot be screwed in, and the bottle mouth remains sealed. After the safety buckle 29 is pulled out, the gas cylinder cover 20 is screwed in, driving the gas cylinder 1 to move upward, so that the ejector pin 4 can pierce the bottle mouth.

[0058] The pressure rod assembly 23 of this embodiment includes a lower pressing block 231, a pressure spring 232 and a movable head 233. Among them, the lower pressing block 231 is exposed outside the housing 22, and the pressure spring 232 is installed between the lower pressing block 231 and the housing 22 to keep the lower pressing block 231 having a tendency to move outward. The inner end of the lower pressing block 231 abuts against the outer end of the movable head 233. The movable head 233 is rotatably arranged on the housing 22, and the inner end of the movable head 233 abuts against the outer end of the ejector rod 6.

[0059] In this embodiment, an exhaust passage 25 is opened in the housing 22, a push rod 26 is installed in the exhaust passage 25, and a striker 27 and a striker return spring 28 are installed in the propulsion cylinder 3.

[0060] The working process of the valve linkage device of this embodiment is as follows:

[0061] First, as Figure 12 and Figure 13 shown, the safety buckle 29 is pulled out, the gas cylinder cover 20 is tightened, the ejector pin 4 is inserted into the bottle mouth, and the inflation sleeve 2 starts to be filled with gas; then, as Figure 14 and Figure 15 shown, the firing trigger 24 is pressed. The firing trigger 24 acts on the pressure rod assembly 23, and the pressure rod assembly 23 presses down the ejector rod 6, and the valve core 5 is opened. The high-pressure gas in the inflation sleeve 2 enters the propulsion cylinder 3 through the connecting valve 8; as Figure 16 and Figure 17 shown, the striker 27 in the propulsion cylinder 3 extends outward under the impact of the gas in the propulsion cylinder 3 to complete an impact. At this time, the striker return spring 28 is compressed; at the same time, as Figure 18 shown, the high-pressure gas in the propulsion cylinder 3 enters the exhaust passage 25, pushing the push rod 27 to move towards the pressure rod assembly 23. The movable head 233 rotates under the thrust of the push rod 26, and then the ejector rod 6 and the valve core 5 move upward synchronously, and the valve core 5 closes. Then, as Figure 19 shown, the gas pressure in the propulsion cylinder 3 decreases, and the striker 27 retracts to the initial position under the action of the striker return spring 28; finally, as Figure 20 shown, the firing trigger 24 resets, and the pressure rod assembly 23 also resets to await the next firing.

[0062] In the description and claims of the present invention, terms indicating directions such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc. are used to describe various exemplary structural parts and elements of the present invention. However, these terms are used here only for the purpose of convenient description and are determined based on the exemplary orientations shown in the drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions should be regarded as illustrative rather than restrictive. For example, "upper" and "lower" are not necessarily limited to the directions opposite to or consistent with the direction of gravity.

Claims

1. A linkage device for a pneumatic valve, characterized in that Comprising: A gas cylinder (1); An inflation sleeve (2), installed at the mouth of the gas cylinder (1), and the inflation sleeve (2) has an exhaust port; A driving member, used to impact the gas cylinder (1) to cause the gas cylinder to release gas into the inflation sleeve (2); A propulsion cylinder (3), having an air inlet and an air outlet, the air inlet is communicated with the exhaust port of the inflation sleeve (2), and the air outlet is communicated with the outside; A thimble (4), arranged inside the inflation sleeve (2), the needle tip of the thimble (4) faces the mouth of the gas cylinder (1), and under the action of the driving member, the gas cylinder (1) and the thimble (4) move relative to each other so that the mouth of the bottle is punctured by the thimble (4), and then the gas in the gas cylinder (1) enters the inflation sleeve (2); A valve core (5), arranged inside the inflation sleeve (2), when the valve core (5) is in the open state, the gas in the inflation sleeve (2) enters the propulsion cylinder (3) through the exhaust port, and when the valve core (5) is in the closed state, the inflation sleeve (2) is isolated from the propulsion cylinder (3); and A push rod (6), the inner end of which is arranged inside the inflation sleeve (2) and abuts against the valve core (5), and the push rod (6) drives the valve core (5) to move inwards to open the valve core (5) under the action of an external force. As the gas in the propulsion cylinder (3) is discharged outwards through the air outlet, the valve core (5) and the push rod (6) can be reset outwards to close the valve core (5); The gas cylinder (1) is arranged inside a housing (10), the driving member includes a button (91), a first connecting rod (92), a button spring (93), a release trigger (94), a fastening base (95), a release spring (96), a pressing block (97), a release trigger spring (98) and a pull rod (99). The button (91) is rotatably arranged outside the housing (10), the fastening base (95) is installed at the rear end of the housing (10), the pressing block (97), the release spring (96) and the pull rod (99) are arranged inside the housing (10), the release trigger (94) is rotatably arranged on the housing (10), the first connecting rod (92) is arranged between the button (91) and the first end of the release trigger (94), the second end of the release trigger (94) is used to abut against the pressing block (97), the front end of the pull rod (99) abuts against the tail of the gas cylinder (1), the pressing block (97) is movably arranged on the pull rod (99), the release spring (96) is arranged between the fastening base (95) and the pressing block (97). When the button (91) is pressed down, the release trigger (94) is pressed down by the first connecting rod (92) to disengage from the pressing block (97), so that the pressing block (97) moves forward under the action of the release spring (96), and then pushes the gas cylinder (1) towards the thimble (4) to open the mouth of the bottle. When the button (91) is released, the button (91) is reset under the action of the button spring (93), and the release trigger (94) is reset under the action of the release trigger spring (98); The button (91) abuts against the middle of the first link (92). The first end of the first link (92) abuts against the first end of the release trigger (94). The second end of the first link (92) is connected to the first end of the second link (11). The second end of the second link (11) is connected to the first end of the third link (12). There are also a reset spring plate (13), a first transmission rod (14) and a second transmission rod (15). Both the first transmission rod (14) and the second transmission rod (15) are rotating parts. The second end of the third link (12) has a stop portion (121) that abuts against the first end of the first transmission rod (14). The second end of the first transmission rod (14) abuts against the outer end of the ejector rod (6). During the pressing process of the button (91), through the linkage of the first link (92), the second link (11) and the third link (12), the second end of the first transmission rod (14) acts on the ejector rod (6) to move the ejector rod inward, thereby opening the valve core (5). The reset spring plate (13) and the second transmission rod (15) are arranged on both sides of the second end of the third link (12).

2. The linkage device of the air valve according to claim 1, wherein: A valve core spring (7) is installed in the inflation sleeve (2). When the valve core (5) is in the open state, the valve core spring (7) is in an energy storage state, causing the valve core (5) to have a tendency to close. When the external force acting on the ejector rod (6) disappears, the valve core spring (7) can drive the valve core (5) and the ejector rod (6) to reset outward synchronously to close the valve core (5).

3. The linkage device of the air valve according to claim 1, characterized in that: A connecting air valve (8) is installed between the exhaust port of the inflation sleeve (2) and the intake port of the propulsion cylinder (3).

4. The linkage device of the air valve according to claim 1, characterized in that: The ejector pin (4) is fixed in the inflation sleeve (2).

5. The linkage device of the air valve according to any one of claims 1 to 3, characterized in that: The driving part is a gas cylinder cover (20) threadedly connected to the inflation sleeve (2). The gas cylinder (1) is arranged in the gas cylinder cover (20). A spring (21) is installed between the tail of the gas cylinder (1) and the gas cylinder cover (20).

6. The linkage device of the air valve according to claim 1, characterized in that: There is also a housing (22). A pressing rod assembly (23) and a firing trigger (24) are installed on the housing (22). The firing trigger (24) can act on the pressing rod assembly (23), thereby enabling the pressing rod assembly (23) to generate the external force on the ejector rod (6).

7. The linkage device of the air valve according to claim 6, characterized in that: An exhaust passage (25) is opened in the housing (22). A push rod (26) is installed in the exhaust passage (25). A firing pin (27) is installed in the propulsion cylinder (3). When the firing pin (27) extends outward under the impact of the gas in the propulsion cylinder (3), the air flow in the propulsion cylinder (3) enters the exhaust passage (25) and drives the push rod (26) to act on the pressing rod assembly (23), thereby resetting the ejector rod (6), and the valve core (5) closes accordingly.

8. The linkage device of the air valve according to claim 7, characterized in that: The pressure rod assembly (23) includes a lower pressing block (231), a compression spring (232), and a movable head (233). The lower pressing block (231) is exposed outside the housing (22). The compression spring (232) is installed between the lower pressing block (231) and the housing (22) so that the lower pressing block (231) has a tendency to move outward. The inner end of the lower pressing block (231) abuts against the outer end of the movable head (233). The movable head (233) is rotatably arranged on the housing (22). The inner end of the movable head (233) abuts against the outer end of the ejector rod (6). The movable head (233) rotates under the action of the push rod (26) and can reset the ejector rod (6).

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