A gas source device

Abstract

A gas source device, a connection seat is provided at the top of the gas cylinder, an opening device is installed on the front side of the connection seat, and an exhaust cavity that can communicate with the gas cylinder after opening is provided at the position of the connection seat corresponding to the opening device; a piston cavity corresponding to and communicating with the exhaust cavity is provided at the rear side of the connection seat. A piston in the shape of a stepped shaft is installed in the piston cavity, and the small head end of the piston faces away from the gas nozzle. One end of the piston cavity corresponding to the large head end of the piston is open, and a sealing cover is installed at the position corresponding to the open end; a vertical connection hole is provided at the position of the connection seat corresponding to the small head end of the piston, a connection column that is movably inserted into the connection hole is provided at the top of the gas cylinder, a plug hole is provided on the column body of the connection column, the small head end of the piston movably penetrates the bottom of the piston cavity and is movably inserted into the plug hole, and a spring I is sleeved on the column body between the stepped surface of the piston and the bottom of the piston cavity; the structure of the present invention is simple, and the gas cylinder can be automatically detached after the gas in the gas cylinder is used up.

Description

Technical Field

[0001] The present invention relates to the technical field of pneumatic and hydraulic technologies, and particularly to a gas source device. Background Art

[0002] As is well known, currently, in order to ensure that the gas in the gas cylinder does not leak, a sealed nozzle is usually adopted for the gas source device used in aerospace. An easily breakable ring groove is provided on the column body of the nozzle. When gas supply is required, the nozzle is remotely broken by an electric explosion valve, and then the function of opening the bottle to supply gas is realized. However, after the gas in the gas cylinder is used up, the gas cylinder cannot automatically fall off, increasing the equipment load. The above defects are problems that need to be solved urgently by those skilled in the art. Summary of the Invention

[0003] In order to overcome the deficiencies in the background art, the present invention discloses a gas source device.

[0004] To achieve the above-mentioned invention purpose, the present invention adopts the following technical solutions:

[0005] A gas source device includes a gas cylinder and a connection seat. A connection seat is provided at the top of the gas cylinder. An opening device is installed on the front side of the connection seat. An exhaust cavity that can communicate with the gas cylinder after opening the bottle is provided at the position of the connection seat corresponding to the opening device.

[0006] A piston cavity corresponding to and communicating with the exhaust cavity is provided at the rear side of the connection seat. A piston in the shape of a stepped shaft is installed in the piston cavity, and the small head end of the piston faces away from the nozzle. One end of the piston cavity corresponding to the large head end of the piston is open, and a sealing cover is installed at the position corresponding to this opening. A vertical connection hole is provided at the position of the connection seat corresponding to the small head end of the piston. A connection column that is movably inserted into the connection hole is provided at the top of the gas cylinder. A plugging hole is provided on the column body of the connection column. The small head end of the piston movably penetrates the bottom of the piston cavity and is movably inserted into the plugging hole. A spring I is sleeved on the column body between the piston step surface and the bottom of the piston cavity. There is a gap between the large head end of the piston and the sealing cover, and the length of the gap is greater than the length of the small head end of the piston inserted into the plugging hole.

[0007] A pin whose one end is correspondingly plugged into the column body of the large head end of the piston is provided at the top of the connection seat. An easily breakable ring groove II is provided at the position of the pin corresponding to the position between the column body of the large head end of the piston and the inner wall of the piston cavity. An exhaust joint corresponding to and communicating with the exhaust cavity is provided at the position of the top of the connection seat corresponding to the large head end of the piston.

[0008] Preferably, the opening device includes an electric explosion valve provided on the front side of the connection seat. An exhaust cavity is provided at the position of the connection seat corresponding to the striker of the electric explosion valve. A nozzle that is hermetically inserted into the exhaust cavity is provided at the top of the gas cylinder, and the end of the nozzle away from the gas cylinder is sealed. An easily breakable ring groove I is provided below the nozzle corresponding to the striker of the electric explosion valve.

[0009] Preferably, a fixed sleeve is fixedly connected in the piston cavity, and the outer wall of the fixed sleeve is sealed with the inner wall of the piston cavity. The large end of the piston is movably inserted into the inner hole of the fixed sleeve, and a sealing ring is provided between the large end of the piston and the inner hole of the fixed sleeve.

[0010] Preferably, a spring II is provided between the top of the connection hole and the connection column.

[0011] Preferably, a boss corresponding to the spring II is provided at the top of the connection column.

[0012] Preferably, one end of the pin is threadedly connected to the connection seat, and the other end is movably inserted into the large end of the piston. A pin hole is provided at the position of the large end of the piston corresponding to the pin, and the length of the pin hole is greater than the length between the end of the pin corresponding to the large end of the piston and the breakable ring groove II.

[0013] Preferably, a sealing ring is embedded at the position of the connection seat corresponding to the root of the air nozzle.

[0014] Due to the adoption of the above technical solution, the present invention has the following beneficial effects:

[0015] An air source device disclosed by the present invention has a simple structure and can realize the automatic detachment of the gas cylinder. The gas cylinder is connected to the connection seat through the piston. When the high-pressure gas in the gas cylinder enters the exhaust cavity, it can push the large end of the piston, causing a relative displacement between the piston and the piston cavity, so that the pin breaks at the breakable ring groove II. When the gas in the gas cylinder is discharged, the pressure at the large end of the piston decreases, and the piston retreats under the action of the spring I, so that the small end of the piston disengages from the insertion hole, causing the gas cylinder to disengage from the connection seat under its own gravity, thus achieving the purpose of automatic detachment of the gas cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a top view of the present invention;

[0017] Figure 2 is a sectional view taken along line A-A;

[0018] Figure 3 is a sectional view taken along line B-B;

[0019] Figure 4 is a sectional view taken along line C-C;

[0020] Figure 5 is a structural schematic diagram of the gas cylinder.

[0021] In the figure: 1. Gas cylinder; 2. Connection seat; 3. Electric blasting valve; 4. Exhaust cavity; 5. Air nozzle; 6. Breakable ring groove I; 7. Piston cavity; 8. Piston; 9. Connection hole; 10. Connection column; 11. Insertion hole; 12. Spring I; 13. Pin; 14. Breakable ring groove II; 15. Exhaust joint; 16. Sealing cover; 17. Fixed sleeve; 18. Spring II. DETAILED DESCRIPTION

[0022] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", etc. indicating directions or positional relationships, they only correspond to the drawings of the present application for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction.

[0023] Embodiment 1:

[0024] Combined with Figures 1 to 5 , a gas source device, comprising a gas cylinder 1 and a connecting seat 2; the connecting seat 2 is provided on the top of the gas cylinder 1, and a bottle opening device is installed on the front side of the connecting seat 2, and the bottle opening device comprises an electric explosion valve 3 installed on the front side of the connecting seat 2, and the connecting seat 2 is provided with an exhaust cavity 4 at the position of the electric explosion valve 3 collision head corresponding to the electric explosion valve 3, and the top of the gas cylinder 1 is provided with a gas nozzle 5 which is sealed and inserted into the exhaust cavity 4, and the gas nozzle 5 is sealed at one end away from the gas cylinder 1; as needed, a sealing ring is embedded in the connecting seat 2 at the root position corresponding to the gas nozzle 5, and the connecting seat 2 and the root position of the gas nozzle 5 are correspondingly sealed through the sealing ring; an easy-to-break ring groove Ⅰ6 is provided below the gas nozzle 5 corresponding to the collision head of the electric explosion valve 3, that is, the electric explosion valve 3 can be opened when it is necessary to open the gas cylinder 1, and the collision action of the electric explosion valve 3 will break the gas nozzle 5 from the easy-to-break ring groove Ⅰ6, so that the gas cylinder 1 and the exhaust cavity 4 can be connected correspondingly;

[0025] A piston chamber 7 corresponding to and communicating with the exhaust chamber 4 is provided at the rear side of the connecting seat 2. A piston 8 in the shape of a stepped shaft is installed in the piston chamber 7, and the small end of the piston 8 is away from the gas nozzle 5. The piston chamber 7 is open at one end corresponding to the large end of the piston 8, and a cover 16 is installed at the corresponding open position, that is, the cover 16 can be opened during assembly, and the piston 8 can be installed from the open end of the piston chamber 7, and then the open end of the piston chamber 7 can be closed by the cover 16; a vertical connecting hole 9 is provided at the position of the connecting seat 2 corresponding to the small end of the piston 8, and a movable insertion connecting hole 9 is provided at the top of the gas cylinder 1 The connecting column 10 of the hole 9, the column body of the connecting column 10 is provided with a plug hole 11, the small head end of the piston 8 movably penetrates the bottom of the piston cavity 7, and is movably inserted into the plug hole 11, that is, the connection between the connecting seat 2 and the gas cylinder 1 can be achieved by plugging the piston 8 with the plug hole 11, and it is ensured that there is a gap between the small head end of the piston 8 and the bottom of the plug hole 11; the column body between the step surface of the piston 8 and the bottom of the piston cavity 7 is sleeved with a spring I 12, and a gap greater than the length of the small head end of the piston 8 inserted into the plug hole 11 is provided between the large head end of the piston 8 and the cover 16;

[0026] The top of the connecting seat 2 is provided with a pin 13 whose one end is correspondingly inserted into the column body of the big end of the piston 8, and an easily breakable ring groove II 14 is provided at the position of the pin 13 corresponding to the column body between the big end of the piston 8 and the inner wall of the piston cavity 7. That is, when the high-pressure gas in the gas cylinder 1 enters the exhaust cavity 4, it can push the big end of the piston 8, causing the piston 8 to have a relative displacement with the piston cavity 7, so that the pin 13 breaks from the easily breakable ring groove II 14. After the gas in the gas cylinder 1 is discharged, the pressure at the big end of the piston 8 decreases, and the piston 8 retreats under the action of the spring I 12, so that the small end of the piston 8 disengages from the insertion hole 11, causing the gas cylinder 1 to disengage from the connecting seat 2, thus achieving the purpose of automatic detachment of the gas cylinder 1; at the position of the top of the connecting seat 2 corresponding to the big end of the piston 8, an exhaust joint 15 corresponding to and communicating with the exhaust cavity 4 is provided, that is, the gas cylinder 1 can be connected to the corresponding gas-using equipment through the exhaust joint 15;

[0027] Before use, the air inlet of the gas-using equipment is correspondingly connected to the exhaust joint 15. When gas supply is required, the electric explosion valve 3 is opened, and the striker of the electric explosion valve 3 acts to break the gas nozzle 5 from the easily breakable ring groove I 6, so that the gas cylinder 1 can be correspondingly connected to the exhaust cavity 4, and then the gas cylinder 1 can be connected to the gas-using equipment, and gas can be supplied through the gas cylinder 1; when the high-pressure gas in the gas cylinder 1 enters the exhaust cavity 4, it can push the big end of the piston 8, causing the piston 8 to have a relative displacement with the piston cavity 7, so that the pin 13 breaks from the easily breakable ring groove II 14. After the gas in the gas cylinder 1 is discharged, the pressure at the big end of the piston 8 decreases, and the piston 8 retreats under the action of the spring I 12, so that the small end of the piston 8 disengages from the insertion hole 11, causing the gas cylinder 1 to disengage from the connecting seat 2 under its own gravity, thus achieving the purpose of automatic detachment of the gas cylinder 1.

[0028] Embodiment 2:

[0029] Combined with the attached Figures 1 to 5 , a gas source device, on the basis of Embodiment 1, a fixed sleeve 17 is fixedly connected in the piston cavity 7, and the outer wall of the fixed sleeve is sealed with the inner wall of the piston cavity 7. The big end of the piston 8 is movably inserted into the inner hole of the fixed sleeve 17, and a sealing ring is directly provided between the big end of the piston 8 and the inner hole of the fixed sleeve 17. The piston 8 is in plug-in fit with the fixed sleeve 17, without the need for precision machining of the piston cavity 7, effectively reducing the processing difficulty, improving the sealing performance, and preventing gas from leaking from the piston cavity 7; between the top of the connection hole 9 and the connection column 10, a spring II 18 is provided. That is, after the small end of the piston 8 disengages from the insertion hole 11, the spring II 18 can push the connection column 10 to ensure the disengagement of the gas cylinder 1 from the connecting seat 2; at the same time, a convex platform corresponding to and inserted into the spring II 18 is provided at the top of the connection column 10, which can prevent the spring II 18 from being accidentally deflected during assembly.

[0030] Embodiment 3:

[0031] Combined with the attached Figures 1 to 5, a gas source device. On the basis of the first or second embodiment, one end of the pin 13 is threadedly connected to the connecting seat 2, and the other end is movably inserted into the large end of the piston 8. Moreover, a pin hole is provided at the position of the large end of the piston 8 corresponding to the pin 13, and the length of the pin hole is greater than the length between the corresponding end of the pin 13 on the large end of the piston 8 and the breakable ring groove II 14. That is, after the pin 13 breaks from the breakable ring groove II 14, a part of it falls into the pin hole at the large end of the piston 8, and the other part remains on the connecting seat 2, avoiding the interference between the two broken parts of the pin 13 and preventing the piston 8 from being accidentally stuck.

[0032] The parts not detailed in the present invention are prior art. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive, aiming to include all changes falling within the meaning and scope of the equivalent elements in the present invention.

Claims

1. An air source device, characterized in that: It includes a gas cylinder (1) and a connection seat (2); a connection seat (2) is provided at the top of the gas cylinder (1), an opening device is installed on the front side of the connection seat (2), and an exhaust cavity (4) that can communicate with the gas cylinder (1) after opening the bottle is provided at the position of the connection seat (2) corresponding to the opening device; a nozzle (5) that is hermetically inserted into the exhaust cavity (4) is provided at the top of the gas cylinder (1); On the rear side of the connection seat (2), there is a piston cavity (7) corresponding to and communicating with the exhaust cavity (4). A piston (8) in the shape of a stepped shaft is installed in the piston cavity (7), and the small head end of the piston (8) faces away from the nozzle (5). One end of the piston cavity (7) corresponding to the large head end of the piston (8) is open, and a cover (16) is installed at the position corresponding to this opening; a vertical connection hole (9) is provided at the position of the connection seat (2) corresponding to the small head end of the piston (8). A connection column (10) that is movably inserted into the connection hole (9) is provided at the top of the gas cylinder (1). A plug hole (11) is provided on the column body of the connection column (10). The small head end of the piston (8) movably penetrates the bottom of the piston cavity (7) and is movably inserted into the plug hole (11). A spring I (12) is sleeved on the column body between the stepped surface of the piston (8) and the bottom of the piston cavity (7). There is a gap between the large head end of the piston (8) and the cover (16) that is greater than the length of the small head end of the piston (8) inserted into the plug hole (11); On the top of the connection seat (2), there is a pin (13) whose one end is correspondingly inserted into the column body of the large head end of the piston (8), and an easily breakable ring groove II (14) is provided at the position of the pin (13) corresponding to the column body of the large head end of the piston (8) and the inner wall of the piston cavity (7); an exhaust joint (15) corresponding to and communicating with the exhaust cavity (4) is provided at the position of the top of the connection seat (2) corresponding to the large head end of the piston (8).

2. The air source device according to claim 1, characterized in that: The opening device includes an electric explosion valve (3) provided on the front side of the connection seat (2). An exhaust cavity (4) is provided at the position of the connection seat (2) corresponding to the striker of the electric explosion valve (3). A nozzle (5) that is hermetically inserted into the exhaust cavity (4) is provided at the top of the gas cylinder (1), and one end of the nozzle (5) facing away from the gas cylinder (1) is sealed. An easily breakable ring groove I (6) is provided below the striker of the electric explosion valve (3) corresponding to the nozzle (5).

3. The air source device according to claim 1, characterized in that: A fixed sleeve (17) is fixedly connected in the piston cavity (7), and the outer wall of the fixed sleeve is sealed with the inner wall of the piston cavity (7). The large head end of the piston (8) is movably inserted into the inner hole of the fixed sleeve (17), and a sealing ring is provided directly between the large head end of the piston (8) and the inner hole of the fixed sleeve (17).

4. The air source device according to claim 1, characterized in that: A spring II (18) is provided between the top of the connection hole (9) and the connection column (10).

5. The air source device according to claim 4, characterized in that: A convex platform corresponding to and inserted with the spring II (18) is provided at the top of the connection column (10).

6. The air source device according to claim 1, characterized in that: One end of the pin (13) is threadedly connected to the connection seat (2), and the other end is movably inserted into the large head end of the piston (8). A pin hole with a length greater than the length between the end of the pin (13) corresponding to the large head end of the piston (8) and the easily breakable ring groove II (14) is provided at the position of the large head end of the piston (8) corresponding to the pin (13).

7. The air source device according to claim 1, characterized in that: A sealing ring is embedded at the position of the connection seat (2) corresponding to the root of the nozzle (5).

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