CN220623675U

CN220623675U - Direct-current hydrogenation gun with ball valve and check valve integrated structure

Info

Publication number: CN220623675U
Application number: CN202320623360.1U
Authority: CN
Inventors: 薛冬; 刘重庆; 韩高枫; 游久秦; 龙云飞; 陈时健; 杨雪华; 付佳; 赵佳
Original assignee: CNNC Sufa Technology Industry Co Ltd
Current assignee: CNNC Sufa Technology Industry Co Ltd
Priority date: 2023-03-27
Filing date: 2023-03-27
Publication date: 2024-03-19
Anticipated expiration: 2033-03-27

Abstract

The utility model relates to a hydrogenation gun, which relates to the technical field of new energy. The ball valve structure is composed of a handle, a ball rod, a retainer ring, a rubber ring, a gasket, a gun body, an air outlet valve seat, a sealing ring, an exhaust valve seat, a locknut, an air inlet valve seat, a disc spring, a sealing ring, an air inlet nozzle and a sealing ring, and the ball valve structure plays roles in hydrogen circulation, interception and discharge. The utility model has the following advantages: (1) The fluid resistance is small, the pressure loss is small, and the inflation efficiency is improved. And (2) the structure is simple, the stress condition is good, and the fracture is not easy to occur. (3) safe, convenient and quick. (4) The exhaust structure is simple and convenient, the process is simple, the processing is easy, and the space is saved. (5) The gun body is connected by adopting a thread or a dovetail groove, so that the volume and the weight of the hydrogenation gun can be greatly reduced.

Description

Direct-current hydrogenation gun with ball valve and check valve integrated structure

Technical Field

The utility model relates to a hydrogenation gun, which relates to the technical field of new energy.

Background

In order to cope with global climate change, china proposes that carbon dioxide emission strives to reach a peak value before 2030 years and strives to achieve a carbon neutralization double-carbon target before 2060 years. The long-term development planning (2021-2035) of the hydrogen energy industry clearly shows the energy attribute of hydrogen, and meanwhile, clearly shows that the hydrogen energy is the key direction of strategically emerging industries, and is a new growth point for constructing a green low-carbon industrial system and building industrial transformation and upgrading, so that the hydrogen energy development is spotlighted.

The hydrogenation gun is an important part of a hydrogen link, and at present, the hydrogenation gun has several application occasions of high-pressure gas hydrogen filling and liquid hydrogen filling of 25MPa, 35MPa and 70MPa, and the technology is basically monopoly abroad. Because the molecular weight of the hydrogen medium is small, the hydrogen medium is flammable and explosive, the requirement on the cleanliness of the hydrogen medium by a using end is high, the requirements on the sealing performance, the safety performance, the ergonomics and the like of the hydrogenation gun are high, and the hydrogenation gun is required to have the functions of light operation, opening and closing, exhausting, filtering, falling prevention, static prevention, overload pulling prevention, muzzle icing prevention and the like.

Disclosure of Invention

To prior art's defect, the utility model provides a ball valve, check valve integrated configuration's direct current formula hydrogenation rifle.

The novel implementation is as follows: a direct-flow hydrogenation gun with a ball valve and check valve integrated structure is characterized in that: the ball gun comprises a left gun sleeve, a handle, a retainer ring, a ball rod, a sealing ring, a gland, a transmission seat, a bolt, a right gun sleeve, a steel ball, a hydrogenation port, a spring, a gun core, a gun head, a gun body, an air outlet valve seat, a locknut, an air inlet valve seat, a disc spring, an air inlet nozzle, a screw, a key, fang Shen and a ball holder;

the inner cavity of the gun body is designed into a structure formed by integrating a ball valve and a check valve, the ball valve structure consists of a handle, a ball rod, a ball body and a valve rod which are integrated, a retainer ring, a sealing ring, a gland, a gun body, an air outlet valve seat, a locknut, an air inlet valve seat, a disc spring and an air inlet nozzle; the check valve structure consists of a sealing ring, a gun core, a spring, a gun head and a gun body;

after the gun head is connected with the hydrogenation opening, the gun core is pushed to one side of the gun body and is positioned at the opening position, when the ball valve is positioned at the opening position, hydrogen flows into the inner cavity of the gun head through the lateral opening at one end of the gun body screwed into the gun head, then flows to the hydrogenation opening through the lateral opening of the gun core, hydrogen is conveyed to the hydrogenation opening, and after the hydrogenation gun is dismounted, the gun core is attached to the sealing surface of the gun head under the action of spring force to form sealing;

the gun body is connected with the gun head in a threaded manner, and a sealing ring is arranged at the joint; the gun body is connected with the air inlet nozzle through threads, a sealing ring is arranged at the joint, and the air inlet nozzle is connected with the air inlet pipe; the left gun sleeve is sleeved outside the gun body, and the right gun sleeve is sleeved outside the gun head;

the air inlet nozzle compresses the disc spring to provide sealing force required by the air inlet valve seat, the air outlet valve seat and the ball body of the ball rod, a sealing ring is arranged between the air inlet nozzle and the air inlet valve seat to ensure the sealing performance of the ball valve after the ball valve is closed, and the air outlet valve seat is provided with a communicating small hole to communicate the outlet end of the ball valve and the middle cavity of the ball valve;

the exhaust valve seat is connected with the gun body in a threaded manner, is pressed with the ball body part of the ball rod to form sealing specific pressure, a sealing ring is arranged between the exhaust valve seat and the gun body to ensure sealing, the looseness of the exhaust valve seat is prevented by a locknut, and the fine adjustment function is realized;

the ball body of the ball rod is provided with a ventilation groove, when the handle is adjusted to an exhaust gear, high-pressure hydrogen in the cavity of the ball valve flows to the exhaust valve seat from the ventilation groove and then is discharged into the air or the gas collecting pipeline;

the gland is connected with the gun body through a bolt so as to compress the sealing ring and the check ring at the shaft shoulder of the ball rod, thereby ensuring the sealing at the ball rod and preventing the ball rod from falling off;

the handle is connected with the ball rod in a screw, key and square deep mode, and when the handle rotates, the handle synchronously drives the ball rod to rotate, so that the ball valve is opened and closed;

the bottom of the handle of the ball valve is designed into a cam structure, when the handle is rotated to an oa gear, the ball valve is closed, and at the moment, the hydrogenation gun can be assembled and disassembled; when the handle is rotated to the ob gear, the gun head is locked, the exhaust is opened, and the inlet and outlet of the ball valve are not ventilated; when the handle is rotated to the oc gear, the gun head is still locked, the exhaust is closed, and the inlet and outlet of the ball valve are not ventilated; when the handle is rotated to the od gear, the gun head is still locked, the ball valve is opened, and inflation is started;

the right gun sleeve is connected with the transmission seat through a bolt, a spring is arranged between the right gun sleeve and the gun head, when the handle cam is rotated to one side of the transmission seat in a large diameter manner, the right gun sleeve and the transmission seat synchronously move towards the hydrogenation opening, the spring is pressed, and the steel ball is pressed inwards, so that the hydrogenation gun is clamped with the hydrogenation opening, and the hydrogenation gun is prevented from being ejected when high-pressure air is added; when the small diameter of the handle cam is rotated to one side of the transmission seat, the right gun sleeve and the transmission seat synchronously move reversely to the hydrogenation port under the elasticity of the spring, the radial limitation of the steel ball is relieved, and the hydrogenation gun can be detached;

the gun head is provided with a ball support, the gun head is connected with the ball support in a dovetail groove mode, a taper hole is formed in the lateral direction of the ball support, a steel ball is arranged in the taper hole, the steel ball can leak out of the ball support but cannot fall out, the outer side of the ball support is matched with a right gun sleeve, and the radial displacement of the steel ball is limited through the movement of the right gun sleeve.

The utility model has the following advantages:

1. the gas flow passage in the hydrogenation gun body is a direct-current passage, so that the fluid resistance is small, the pressure loss is small, and the inflation efficiency is improved in the inflation process.

2. In the ball valve designed in the hydrogenation gun body, the used ball rod (4) adopts a ball rod integrated structure, so that the structure is simple, the stress condition is good, and the ball rod is not easy to break.

3. The ball valve has small flow resistance and rapid switch, and the hydrogenation gun is controlled to be opened and closed safely, conveniently and rapidly through the handle (2) and the bottom cam structure.

4. The exhaust structure is simple and convenient, the process is simple, the processing is easy, and the space is saved.

5. The gun body is connected by adopting a thread or a dovetail groove, so that the volume and the weight of the hydrogenation gun can be greatly reduced.

Drawings

FIG. 1 is a schematic diagram of a direct-current hydrogenation gun with an integrated structure of a ball valve and a check valve.

FIG. 2 is a schematic diagram of the hydrogenation gun exhaust.

FIG. 3 is a schematic diagram of an exhaust valve seat and vent groove.

FIG. 4 is a schematic illustration of the position of the handle shift, vent valve seat sealing surface and vent slot.

FIG. 5 is a schematic diagram of the shift relationship between the state of the hydrogenation gun and the handle.

In the figure: 1-left holster, 2-handle, 3-retainer, 4-club, 5-seal, 6-gland, 7-drive seat, 8-seal, 9-bolt, 10-right holster, 11-steel ball, 12-hydrogenation port (schematic) 13-spring, 14-holster, 15-spring, 16-holster, 17-holster, 18-air outlet valve seat, 19-seal, 20-air outlet valve seat, 21-locknut, 22-air inlet valve seat, 23-disc spring, 24-seal, 25-air inlet nozzle, 26-seal, 27-bolt, 28-screw (key, fang Shen, etc.), 29-ball seat, 30-ball valve cavity, 31-evacuation or connection hydrogen recovery line, 32-communication aperture, 33-ball valve outlet, 34-check valve inlet, 35-vent slot.

In fig. 4: (a) a closing gear, (b) an exhaust gear, (c) a locking gear, and (d) an opening gear.

The significance of each gear in fig. 5: oa gear-closing, ob gear-exhausting, oc gear-locking and Od gear-opening.

And (3) an air entrainment process: oa→oc→od; and (3) gun unloading process: oa→oc→ob→od.

Detailed Description

The utility model provides a ball valve, check valve integrated configuration's straight-flow hydrogenation rifle, see figure 1 of the accompanying drawings, including left holster 1, handle 2, retaining ring 3, club 4, sealing washer 5, gland 6, drive seat 7, sealing washer 8, bolt 9, right holster 10, steel ball 11, hydrogenation mouth 12, spring 13, rifle core 14, spring 15, rifle head 16, rifle body 17, air outlet valve seat 18, sealing washer 19, exhaust valve seat 20, locknut 21, intake valve seat 22, disc spring 23, sealing washer 24, air inlet nozzle 25, sealing washer 26, bolt 27, screw key, fang Shen etc. 28, ball support 29.

The direct-current hydrogenation gun with the integrated structure of the ball valve and the check valve is characterized in that the inner cavity of the gun body 17 is designed into a ball valve structure, the ball valve structure consists of a handle 2, a ball body of a ball rod 4, a check ring 3, a rubber ring 5, a gasket 6, the gun body 17, an air outlet valve seat 18, a sealing ring 19, an air outlet valve seat 20, a locknut 21, an air inlet valve seat 22, a disc spring 23, a sealing ring 24, an air inlet nozzle 25 and a sealing ring 26. The ball valve structure plays roles in hydrogen circulation, interception and discharge.

The straight-flow hydrogenation gun with the ball valve and check valve integrated structure is characterized in that the inner cavity of the gun head 16 is designed to be of a check valve structure, and the check valve structure consists of a sealing ring 8, a gun core 14, a spring 15, the gun head 16 and a gun body 17. The check valve structure plays a double sealing role and plays a role in preventing hydrogen from leaking outwards when the check valve structure is broken by sudden external force.

The straight-flow hydrogenation gun with the ball valve and check valve integrated structure comprises a gun body 17 and a gun head 16 which are connected through threads, and the gun body 17 and the gun head 16 are sealed through a sealing ring 8 so as to ensure that gas does not leak.

The direct-current hydrogenation gun with the ball valve and check valve integrated structure comprises a gun body 17, a gun head 16 and a hydrogen gas inlet pipe, wherein the hydrogen gas inlet pipe is connected with the gun head 16 through a side opening at one end of the gun body 17.

The straight-flow hydrogenation gun with the ball valve and check valve integrated structure is characterized in that after the gun head 16 is connected with the hydrogenation port 12, the gun core 14 is pushed to one side of the gun body 17, and in an opening position, hydrogen flows to the hydrogenation port 12 through a lateral opening of the gun core 14, and the hydrogen is conveyed to the hydrogenation port 12. After the hydrogenation gun is disassembled, the gun core 14 is attached to the sealing surface of the gun head 16 under the action of the elasticity of the spring 15 to form a seal.

The straight-flow hydrogenation gun with the ball valve and check valve integrated structure has the advantages that the center line of the hydrogen flow path is straight, the fluid resistance is small, the pressure loss is small, and the inflation efficiency can be improved.

The straight-flow hydrogenation gun with the ball valve and check valve integrated structure comprises a gun body 17 and an air inlet nozzle 25, wherein the gun body and the air inlet nozzle 25 can be connected in a threaded mode, a sealing ring 24 is arranged at the joint to ensure sealing, and the air inlet nozzle 25 is connected with an air inlet pipe.

The straight-flow hydrogenation gun with the ball valve and check valve integrated structure has the advantages that the air inlet nozzle 25 compresses the disc spring 23 to provide sealing force required by the ball body of the ball rod 4 and the air inlet valve seat 22, the air outlet valve seat 18, and the sealing ring 26 is arranged between the air inlet nozzle 25 and the air inlet valve seat 22 to ensure the sealing performance of the ball valve after being closed.

The direct-current hydrogenation gun with the ball valve and check valve integrated structure comprises a valve body, wherein an outlet valve seat 18 is provided with a communicating small hole which is communicated with the outlet end of the ball valve and a middle cavity of the ball valve. When the ball valve is closed, high-pressure hydrogen at the outlet end flows into the middle cavity of the ball valve through the small hole.

The direct-current hydrogenation gun with the ball valve and check valve integrated structure is characterized in that the exhaust valve seat 20 is connected with the gun body 17 in a threaded mode and the like, and is pressed with the ball body part of the ball rod 4 to form sealing specific pressure, so that sealing in the exhaust stage is ensured. The sealing ring 19 is arranged between the exhaust valve seat 20 and the gun body 17 to ensure sealing, and the design such as a locknut is used for preventing the exhaust valve seat from loosening and realizing a fine tuning function.

The ball body of the ball rod 4 is provided with the vent groove, and when the handle 2 is adjusted to the exhaust gear, high-pressure hydrogen in the middle cavity of the ball valve flows to the exhaust valve seat 20 from the vent groove and then is discharged into the air or gas collecting pipeline.

The direct-current hydrogenation gun with the ball valve and check valve integrated structure is characterized in that the gland 6 is connected with the gun body 17 through bolts 27 and the like to press the sealing ring 5 and the retainer ring 3 at the shaft shoulder of the ball rod 4, so that the sealing at the ball rod is ensured, and the ball rod 4 is prevented from falling off.

The direct-current hydrogenation gun with the ball valve and check valve integrated structure is characterized in that the handle 2 is connected with the ball rod 4 through a screw, a key, a square depth and the like. When the handle 2 rotates, the ball rod 4 is synchronously driven to rotate, so that the ball valve is opened and closed.

The direct-current hydrogenation gun with the ball valve and check valve integrated structure has the advantages that the bottom of the ball valve handle 2 is designed to be of a cam structure. When the handle 2 is rotated to the oa gear, the ball valve is closed, and the hydrogenation gun can be assembled and disassembled at the moment, as shown in figure 4 of the drawings; when the handle 2 is rotated to the ob gear, the gun head 16 is locked, the exhaust is opened, and the inlet and the outlet of the ball valve are not ventilated; when the handle 2 is rotated to the oc gear, the gun head 16 is still locked, the exhaust is closed, and the inlet and the outlet of the ball valve are not ventilated; when the handle 2 is rotated to the od position, the gun head 16 is still locked, the ball valve is opened, and inflation is started.

The direct-current hydrogenation gun with the ball valve and check valve integrated structure is characterized in that the right gun sleeve 10 is connected with the transmission seat 7 through the screw 9, and the spring 13 is arranged between the right gun sleeve 10 and the gun head 16.

The straight-flow hydrogenation gun with the ball valve and check valve integrated structure comprises a ball support 29 arranged at the head of a gun head 16, and the gun head 16 and the ball support 29 are connected in a dovetail groove mode. The ball support 29 is laterally provided with a taper hole, and the steel ball 11 is arranged in the taper hole, so that the steel ball 11 can leak out of the ball support 29 but cannot fall out. The outer side of the ball support 29 is matched with the right holster 10, and the radial displacement of the steel ball 11 is limited by the movement of the right holster 10. The root of the ball rest 29 may be slotted to reduce the dangerous cross-sectional area. When the hydrogenation gun is subjected to a pulling force greater than a rated external force in the air-filling process, the ball support 29 can be pulled out or broken, so that the hydrogenation gun and the hydrogenation port 12 can be separated, and the safety of the hydrogenation process is ensured.

According to the direct-current hydrogenation gun with the ball valve and check valve integrated structure, when the cam of the handle 2 is rotated to one side of the transmission seat 7 in a large diameter manner, the transmission seat 7 is pushed by the cam to push the right gun sleeve 10 to move towards the hydrogenation port 12, the steel ball 11 is pressed inwards, so that the hydrogenation gun is clamped with the hydrogenation port 12, and the hydrogenation gun is prevented from being ejected when high-pressure air filling is ensured.

According to the direct-current hydrogenation gun with the ball valve and check valve integrated structure, the right gun sleeve 10 is internally provided with the groove, when the cam of the handle 2 is rotated to one side of the transmission seat 7 in a small diameter manner, the transmission seat 7 is driven by the resilience force of the spring 13 to reversely move the right gun sleeve 10 to the hydrogenation port 12 until the transmission seat 7 abuts against the cam, the groove in the right gun sleeve 10 moves to the outer side of the steel ball 11, the space on the outer side of the steel ball 11 is enlarged, the radial restriction is relieved, and the hydrogenation gun is smoothly discharged.

The straight-flow hydrogenation gun with the ball valve and check valve integrated structure has the advantages that the left gun sleeve 1 is sleeved outside the gun body 17, and the right gun sleeve 10 is sleeved outside the gun head 16, so that the functions of heat insulation, falling prevention, dust prevention and the like are achieved.

The direct-current hydrogenation gun with the ball valve and check valve integrated structure realizes the safe hydrogenation function through five steps, and is shown in figure 3 of the drawings.

The first step: and (5) gun loading. Before gun loading, the handle 2 is in oa gear, and at this time, the ball valve is closed. After the hydrogenation gun is connected with the hydrogenation opening 12, the steel ball 11 falls into a groove of the hydrogenation opening 12, the hydrogenation opening 12 pushes the gun core 14 to leave the sealing surface of the gun head 16, the spring 15 is stressed, and the inner space of the gun head 16 is communicated with the hydrogenation opening 12.

And a second step of: locking. The handle 2 is rotated to the oc gear, at this time, the right gun sleeve 10 moves towards the hydrogenation port 12 under the action of the cam, and the outer side of the steel ball 11 is limited by the right gun sleeve 10 to be extruded inwards, so that the hydrogenation gun is locked with the hydrogenation port 12.

And a third step of: and (5) inflating. The handle 2 is rotated to the od gear, at the moment, the ball valve is opened, the inner cavity of the hydrogenation gun is communicated with the hydrogenation port 12, and air filling is started.

Fourth step: and closing. The handle 2 is rotated to the oc gear, at the moment, the ball valve is closed, no air is added, the large diameter of the cam of the handle 2 is contacted with the transmission seat 7, and the hydrogenation gun is in a locking state.

Fifth step: and (5) exhausting. The handle 2 is rotated to the ob gear, at the moment, the ball valve is closed, no air is added, and two sides of the ventilation groove on the ball body are respectively positioned at two sides of the sealing surface of the exhaust valve seat and are communicated with the middle cavity of the ball valve and the channel of the exhaust valve seat; high-pressure hydrogen stored in the cavity between the ball and the hydrogenation port 12 enters the ball valve cavity through the communicating small hole of the outlet valve seat 18, and then enters the exhaust valve seat 20 through the ventilation groove to be discharged to an air or hydrogen recovery pipeline.

Sixth step: and (5) discharging the gun. The handle 2 is rotated to an oa gear, at the moment, the ventilation groove on the sphere is surrounded and covered by the sealing surface of the exhaust valve seat 20, and the middle cavity of the ball valve is not communicated with the exhaust valve seat 20 any more; the small diameter of the cam is contacted with the transmission seat 7, the right gun sleeve 10 moves to the opposite side of the hydrogenation port 12 by the elasticity of the spring 13, and the radial limitation on the steel ball 11 is relieved; the gun core 14 forms a seal with the gun head 16 under the action of the elastic force of the spring 15, and the hydrogenation gun can be detached.

Seventh step: and (5) accidentally breaking. Namely, when the hydrogenation gun is subjected to a pulling force greater than a rated external force in the air-filling process, the root of the ball support 29 is slotted, and the ball support 29 can be pulled out or broken, so that the hydrogenation gun and the hydrogenation port 12 can be separated, and the safety of the hydrogenation process is ensured.

Claims

1. A direct-flow hydrogenation gun with a ball valve and check valve integrated structure is characterized in that: the device comprises a left gun sleeve (1), a handle (2), a retainer ring (3), a ball rod (4), a sealing ring, a gland (6), a transmission seat (7), a bolt, a right gun sleeve (10), a steel ball (11), a hydrogenation port (12), a spring, a gun core (14), a gun head (16), a gun body (17), an air outlet valve seat (18), an exhaust valve seat (20), a locknut (21), an air inlet valve seat (22), a disc spring (23), an air inlet nozzle (25), a screw, a key, fang Shen and a ball holder (29);

the inner cavity of the gun body (17) is designed into a structure of integrating a ball valve and a check valve, and the ball valve structure consists of a handle (2), a ball rod (4), a ball body and valve rod integrated type, a retainer ring (3), a sealing ring, a gland (6), the gun body (17), an air outlet valve seat (18), an exhaust valve seat (20), a locknut (21), an air inlet valve seat (22), a disc spring (23) and an air inlet nozzle (25); the check valve structure consists of a sealing ring, a gun core (14), a spring, a gun head (16) and a gun body (17);

after the gun head (16) is connected with the hydrogenation port (12), the gun core (14) is pushed to one side of the gun body (17) and is positioned at an opening position, when the ball valve is positioned at the opening position, hydrogen flows into the inner cavity of the gun head (16) through a lateral opening at one end of the gun head (16) through the gun body (17), then flows to the hydrogenation port (12) through the lateral opening of the gun core (14), hydrogen is conveyed to the hydrogenation port (12), and after the hydrogenation gun is dismounted, the gun core (14) is attached to a sealing surface of the gun head (16) under the action of spring force to form a seal;

the gun body (17) is connected with the gun head (16) in a threaded mode, and a sealing ring is arranged at the joint; the gun body (17) is connected with the air inlet nozzle (25) through threads, a sealing ring is arranged at the joint, and the air inlet nozzle (25) is connected with the air inlet pipe; the left gun sleeve (1) is sleeved outside the gun body (17), and the right gun sleeve (10) is sleeved outside the gun head (16);

the air inlet nozzle (25) compresses the disc spring (23) to provide sealing force required by the ball body of the air inlet valve seat (22), the air outlet valve seat (18) and the ball rod (4), a sealing ring is arranged between the air inlet nozzle (25) and the air inlet valve seat (22) to ensure the sealing performance of the closed ball valve, and the air outlet valve seat (18) is provided with a communicating small hole to communicate the outlet end of the ball valve and the middle cavity of the ball valve;

the exhaust valve seat (20) is connected with the gun body (17) in a threaded mode, is pressed with the ball body part of the ball rod (4) to form sealing specific pressure, a sealing ring is arranged between the exhaust valve seat (20) and the gun body (17) to ensure sealing, and the looseness of the exhaust valve seat is prevented by a locknut, so that a fine adjustment function is realized;

the ball body of the ball rod (4) is provided with a ventilation groove, when the handle (2) is adjusted to an exhaust gear, high-pressure hydrogen in the cavity of the ball valve flows to the exhaust valve seat (20) from the ventilation groove and is discharged into an air or gas collecting pipeline;

the gland (6) is connected with the gun body (17) through bolts so as to press the sealing ring and the retainer ring (3) at the shaft shoulder of the ball rod (4), thereby ensuring the sealing at the ball rod and preventing the ball rod (4) from falling off;

the handle (2) is connected with the ball rod (4) in a screw, key and square deep mode, and when the handle (2) rotates, the ball rod (4) is synchronously driven to rotate, so that the ball valve is opened and closed;

the bottom of the ball valve handle (2) is designed into a cam structure, when the handle (2) is rotated to an oa gear, the ball valve is closed, and at the moment, the hydrogenation gun can be assembled and disassembled; when the handle (2) is rotated to the ob gear, the gun head (16) is locked, the exhaust is opened, and the inlet and outlet of the ball valve are not ventilated; when the handle (2) is rotated to the oc gear, the gun head (16) is still locked, the exhaust is closed, and the inlet and outlet of the ball valve are not ventilated; when the handle (2) is screwed to the od gear, the gun head (16) is still locked, the ball valve is opened, and the inflation is started;

the right gun sleeve (10) is connected with the transmission seat (7) through a bolt, a spring is arranged between the right gun sleeve (10) and the gun head (16), when the cam of the handle (2) is rotated to one side of the transmission seat (7) in a large diameter manner, the right gun sleeve (10) and the transmission seat (7) synchronously move towards the hydrogenation opening (12), the spring is compressed, and the steel ball (11) is compressed inwards, so that the hydrogenation gun is clamped with the hydrogenation opening (12), and the hydrogenation gun is prevented from being ejected when high-pressure air is added; when the small diameter of the cam of the handle (2) is rotated to one side of the transmission seat (7), the right gun sleeve (10) and the transmission seat (7) synchronously move towards the hydrogenation port (12) in the opposite direction under the elasticity of a spring, the radial limitation of the steel ball (11) is relieved, and the hydrogenation gun can be detached;

the gun head (16) head sets up ball support (29), and gun head (16) are connected through the dovetail mode with ball support (29), and ball support (29) side direction is opened the taper hole, sets up steel ball (11) in the taper hole, guarantees that steel ball (11) can spill ball support (29) inside but not fall out, and ball support (29) outside cooperates with right holster (10), restricts steel ball (11) radial displacement through the removal of right holster (10).