CN218936024U - Pressure maintaining valve structure for gas bottle - Google Patents
Pressure maintaining valve structure for gas bottle Download PDFInfo
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- CN218936024U CN218936024U CN202223437793.2U CN202223437793U CN218936024U CN 218936024 U CN218936024 U CN 218936024U CN 202223437793 U CN202223437793 U CN 202223437793U CN 218936024 U CN218936024 U CN 218936024U
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- gas
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
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Abstract
The utility model relates to a pressure maintaining valve structure for a gas bottle, which belongs to the technical field of valves and comprises a valve body assembly, wherein an opening and closing mechanism which is movably sleeved with the valve body assembly in a threaded manner is arranged on the valve body assembly. The valve body assembly comprises a valve body, an air outlet is formed in the side end of the valve body, an air inlet communicated with the opening and closing mechanism is formed in the lower portion of the valve body, a guide sleeve which is located on the side edge of the opening and closing mechanism and communicated with the opening and closing mechanism and the air inlet is arranged in the valve body, plugs which are symmetrically distributed with the guide sleeve and are in threaded sleeving connection with the valve body are arranged on the other side of the opening and closing mechanism, an air core which is in movable contact with the air outlet is arranged between the guide sleeve and the air outlet, the air core is in movable sleeving connection with the guide sleeve, and a spring is arranged between the air core and the guide sleeve. Has the characteristics of compact structure, convenient installation and small volume. The problem of realizing complete emptying of the gas cylinder is solved. Avoiding the need for vacuum pumping or gas replacement during recharging.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to a pressure maintaining valve structure for a gas bottle.
Background
The common gas cylinder valve in the prior art can completely empty the gas in the cylinder under the opened state, has no residual gas pressure, and the air and impurities in the air easily enter the gas cylinder in the circulation process of the gas cylinder to cause pollution. When the air bag is filled again, the air bag needs to be vacuumized or replaced by air, so that the efficiency is low, and the waste of energy and resources is caused.
The utility model provides a pressurize valve, application number is 202022478485.9, it includes the valve body, valve rod and hand wheel, main passageway has been seted up in the valve body, be provided with valve subassembly and valve body pressure cap in the main passageway, valve body one end is connected with valve subassembly, the valve body other end passes the valve body pressure cap, and stretch to the valve body outside and be connected with the hand wheel, valve body one side is provided with the pressurize device, secondary channel has been seted up in the pressurize device, the pressurize device includes the swivel nut and valve core, secondary channel one end is provided with the mounting groove, mounting groove one side part or run through main passageway one side completely and form the yoke hole, the swivel nut is fixed to be set up in the mounting groove, the valve core slides and sets up in the swivel nut top, control secondary channel switching. However, the technical scheme has the defects of large transverse volume and waste of structural space.
Disclosure of Invention
The utility model mainly solves the defects existing in the prior art, and provides a pressure maintaining valve structure for a gas bottle, which has the characteristics of compact structure, convenience in installation and small volume. The problem of realizing complete emptying of the gas cylinder is solved. Avoiding the need for vacuum pumping or gas replacement during recharging.
The technical problems of the utility model are mainly solved by the following technical proposal:
a pressure maintaining valve structure for a gas bottle comprises a valve body assembly, wherein an opening and closing mechanism which is movably sleeved with threads of the valve body assembly is arranged on the valve body assembly. The valve body assembly comprises a valve body, an air outlet is formed in the side end of the valve body, an air inlet communicated with the opening and closing mechanism is formed in the lower portion of the valve body, a guide sleeve which is located on the side edge of the opening and closing mechanism and communicated with the opening and closing mechanism and the air inlet is arranged in the valve body, plugs which are symmetrically distributed with the guide sleeve and are in threaded sleeving connection with the valve body are arranged on the other side of the opening and closing mechanism, an air core which is in movable contact with the air outlet is arranged between the guide sleeve and the air outlet, the air core is in movable sleeving connection with the guide sleeve, and a spring is arranged between the air core and the guide sleeve.
Preferably, the opening and closing mechanism comprises a valve rod, a guide sleeve sleeved with the valve body in a threaded mode is arranged between the valve rod and the valve body, an opening and closing piston sleeved with the valve body in a threaded mode is arranged at the lower end of the valve rod, flat air passing grooves communicated with the guide sleeve are formed in two side ends of the opening and closing piston, the flat air passing grooves on one side are in plug connection limit with the end face of the plug, and a rubber piston head nested with the opening and closing piston and movably connected with the air inlet in a compression mode is arranged at the lower end of the opening and closing piston.
Preferably, the upper end of the valve rod is provided with a hand wheel sleeved with the valve rod, a lock nut which is in compression joint with the hand wheel and is in threaded sleeved fixation with the valve rod is arranged in the hand wheel, and a clamping ring which is in clamping limiting sleeved connection with the lock nut is arranged between the upper part of the lock nut and the valve rod.
Preferably, the outer circle of the side end of the valve body is provided with a pipe thread, and the outer circle of the lower end of the valve body is provided with a cone thread.
Preferably, the lower end of the valve body assembly is provided with a gas cylinder, a gas cylinder connecting joint seat which is in threaded connection with the conical threads is arranged between the gas cylinder and the valve body assembly, and an O-shaped sealing ring is arranged between the valve body and the gas cylinder connecting joint seat.
Preferably, a rubber sealing ring sleeved with the valve body is arranged between the upper end of the gas cylinder connecting joint seat and the valve body, and a spring washer sleeved with the valve body is arranged between the rubber sealing ring and the gas cylinder connecting joint seat.
Preferably, the side end of the valve body assembly is provided with an exhaust pipe which is in threaded connection with the pipe thread.
Preferably, a plurality of annular distributed transverse ventilation grooves are formed in the outer circle of the guide sleeve, mounting threads are arranged between two adjacent transverse ventilation grooves, guide holes which are communicated with the guide sleeve and are elastically sleeved with the air core are formed in the guide sleeve, and a plurality of longitudinal ventilation grooves which are communicated with the transverse ventilation grooves are formed in the front end of the guide sleeve.
Preferably, the rear end of the air core is provided with a spring accommodating hole sleeved with the spring, the front end of the air core is provided with a through hole communicated with the spring accommodating hole, and the front outer ring and the rear outer ring of the air core are respectively provided with a sealing ring groove II for installing a sealing ring.
Preferably, the outer circle of the front part of the plug is provided with a sealing ring groove I for installing a sealing ring.
The utility model can achieve the following effects:
compared with the prior art, the pressure maintaining valve structure for the gas bottle has the characteristics of compact structure, convenience in installation and small volume. The problem of realizing complete emptying of the gas cylinder is solved. Avoiding the need for vacuum pumping or gas replacement during recharging.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a cross-sectional view of the structure of the present utility model.
Fig. 3 is a structural cross-sectional view of the plug in the present utility model.
Fig. 4 is a schematic view of the structure of the opening and closing piston in the present utility model.
Fig. 5 is a schematic structural view of the guide sleeve in the present utility model.
Fig. 6 is a structural cross-sectional view of the guide sleeve in the present utility model.
Fig. 7 is a structural cross-sectional view of the air core in the present utility model.
Fig. 8 is a schematic view of the assembled structure of the pressure regulating valve of the present utility model.
In the figure: the valve comprises an opening and closing mechanism 1, a valve body assembly 2, pipe threads 3, conical threads 4, a hand wheel 5, a lock nut 6, a clamping ring 7, a valve rod 8, a guide sleeve 9, a valve body 10, an opening and closing piston 11, a guide sleeve 12, an air outlet 13, an air core 14, a spring 15, an air inlet 16, a rubber piston head 17, a plug 18, a sealing ring groove I19, a flat air passing groove 20, mounting threads 21, a transverse air passing groove 22, a guide hole 23, a longitudinal air passing groove 24, a sealing ring groove II 25, a through hole 26, a spring accommodating hole 27, an air bottle 28, a rubber sealing ring 29, a spring gasket 30, an air exhaust pipe 31, an O-shaped sealing ring 32 and an air bottle connecting joint seat 33.
Detailed Description
The technical scheme of the utility model is further specifically described below through examples and with reference to the accompanying drawings.
Examples: as shown in fig. 1-8, a pressure maintaining valve structure for a gas bottle comprises a valve body assembly 2, wherein an opening and closing mechanism 1 which is movably sleeved with the valve body assembly 2 in a threaded manner is arranged on the valve body assembly 2. The lower end of the valve body component 2 is provided with a gas cylinder 28, a gas cylinder connecting joint seat 33 which is in threaded connection with the conical thread 4 is arranged between the gas cylinder 28 and the valve body component 2, and an O-shaped sealing ring 32 is arranged between the valve body 10 and the gas cylinder connecting joint seat 33. A rubber sealing ring 29 sleeved with the valve body 10 is arranged between the upper end of the gas cylinder connecting joint seat 33 and the valve body 10, and a spring washer 30 sleeved with the valve body 10 is arranged between the rubber sealing ring 29 and the gas cylinder connecting joint seat 33. The side end of the valve body component 2 is provided with an exhaust pipe 31 which is in threaded connection with the pipe thread 3.
The opening and closing mechanism 1 comprises a valve rod 8, a hand wheel 5 sleeved with the valve rod 8 is arranged at the upper end of the valve rod 8, a lock nut 6 which is in compression joint with the hand wheel 5 and is in threaded sleeved connection with the valve rod 8 is arranged in the hand wheel 5, and a clamping ring 7 which is in clamping and limiting sleeved connection with the lock nut 6 is arranged between the upper part of the lock nut 6 and the valve rod 8. A guide sleeve 9 which is in threaded connection with the valve body 10 is arranged between the valve rod 8 and the valve body 10, an opening and closing piston 11 which is in threaded connection with the valve body 10 is arranged at the lower end of the valve rod 8, flat air passing grooves 20 which are communicated with the guide sleeve 12 are arranged at the two side ends of the opening and closing piston 11, and a rubber piston head 17 which is nested with the opening and closing piston 11 and is in movable compression joint with the air inlet 16 is arranged at the lower end of the opening and closing piston 11.
The valve body assembly 2 comprises a valve body 10, a pipe thread 3 is arranged on the excircle of the side end of the valve body 10, and a cone thread 4 is arranged on the excircle of the lower end of the valve body 10. The valve body 10 is provided with an air outlet 13 at the side end, an air inlet 16 communicated with the opening and closing mechanism 1 is arranged at the lower part of the valve body 10, a guide sleeve 12 which is positioned at the side edge of the opening and closing mechanism 1 and communicated with the opening and closing mechanism 1 and the air inlet 16 is arranged in the valve body 10, 4 annular distributed transverse ventilation grooves 22 are arranged on the outer circle of the guide sleeve 12, mounting threads 21 are arranged between two adjacent transverse ventilation grooves 22, a guide hole 23 which is communicated with the guide sleeve 12 and is elastically sleeved with the air core 14 is arranged in the guide sleeve 12, and 4 longitudinal ventilation grooves 24 which are communicated with the transverse ventilation grooves 22 are arranged at the front end of the guide sleeve 12. The other side of the opening and closing mechanism 1 is provided with plugs 18 which are symmetrically distributed with the guide sleeve 12 and are in threaded sleeving connection with the valve body 10, and the outer circle of the front part of each plug 18 is provided with a sealing ring groove I19 for installing a sealing ring. An air core 14 which is movably contacted with the air outlet 13 is arranged between the guide sleeve 12 and the air outlet 13, the air core 14 is movably sleeved with the guide sleeve 12, and a spring 15 is arranged between the air core 14 and the guide sleeve 12. The rear end of the air core 14 is provided with a spring accommodating hole 27 sleeved with the spring 15, the front end of the air core 14 is provided with a through hole 26 communicated with the spring accommodating hole 27, and the front and rear outer rings of the air core 14 are respectively provided with a sealing ring groove II 25 for installing a sealing ring.
Working principle: the air inlet 16 of the valve body assembly 2 is connected with a gas cylinder connecting joint seat 33 on the gas cylinder 28. The valve body assembly 2 is opened and closed by controlling the lifting and lowering of the opening and closing piston 11 through the opening and closing mechanism 1. The plug 18 is inserted into the flat air passing groove 20 at one side of the opening and closing piston 11 to limit, so that the valve rod 8 rotates to drive the opening and closing piston 11 to ascend and descend.
The valve rod 8 is rotated through the hand wheel 5, so that the rubber piston head 17 on the opening and closing piston 11 is pressed and closed with the air inlet 16, the pressure maintaining valve is in a closed state, and the air core 14 and the air outlet 13 are closed and sealed under the action of the spring 15.
When the air needs to be discharged, the hand wheel 5 of the opening and closing mechanism 1 is operated to rotate the valve rod 8 so that the rubber piston head 17 on the opening and closing piston 11 rises, a medium in the air cylinder 28 passes through the flat air passing groove 20, the transverse air passing groove 22 and the longitudinal air passing groove 24 from the air inlet 16 through the air cylinder connecting joint seat 33, and when the medium pressure in the longitudinal air passing groove 24 meets the requirement of overcoming the elastic force of the spring 15, the air core 14 drives the sealing ring to displace under the driving of the medium pressure, and the air outlet 13 is communicated with the longitudinal air passing groove 24 so that the medium is discharged.
When the pressure of the medium is smaller than the elastic force of the spring 15, the air core 14 is reset under the action of the spring 15, so that the air core 14 and the air outlet 13 are pressed together, and the function of remaining pressure maintenance is realized.
When the valve body component 2 is opened by the opening and closing mechanism 1, high-purity medium in the gas cylinder 28 flows along the gas outlet channel, at the moment, the gas core 14 is opened under the pressure effect, gas can flow out from the gas outlet 13, and then the gas in the gas cylinder 28 can be used, when the gas pressure in the gas cylinder is reduced to 2-6 bar, the gas core 14 is closed, the channels of the longitudinal ventilation groove 24 and the gas outlet 13 are cut off, so that external air and impurities cannot enter the gas cylinder, the purity of the gas in the gas cylinder 28 is ensured, the operations such as vacuumizing, medium replacement and the like are not required to be executed when the gas is filled next time, the working efficiency is greatly improved, the waste of energy and resources is reduced, and the safety of the gas can be improved.
In summary, the pressure maintaining valve structure for the gas bottle has the characteristics of compact structure, convenience in installation and small volume. The problem of realizing complete emptying of the gas cylinder is solved. Avoiding the need for vacuum pumping or gas replacement during recharging.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
In summary, the foregoing description is only one embodiment of the present utility model, but the present utility model is not limited to the above embodiments, and any changes or modifications within the scope of the present utility model are intended to be included in the scope of the present utility model.
Claims (10)
1. A pressure maintaining valve structure for a gas bottle, characterized in that: the valve comprises a valve body assembly (2), wherein an opening and closing mechanism (1) which is movably sleeved with threads of the valve body assembly (2) is arranged on the valve body assembly (2); the valve body assembly (2) include valve body (10), valve body (10) side be equipped with gas outlet (13), valve body (10) lower part be equipped with opening and closing mechanism (1) be linked together air inlet (16), valve body (10) in be equipped with be located opening and closing mechanism (1) side and with opening and closing mechanism (1), guide pin bushing (12) that air inlet (16) are linked together, opening and closing mechanism (1) opposite side be equipped with guide pin bushing (12) be symmetrical distribution and with valve body (10) looks screw thread formula cup joint fixed end cap (18), guide pin bushing (12) and gas outlet (13) between be equipped with gas core (14) of gas outlet (13) looks movable contact, gas core (14) cup joint with guide pin bushing (12) looks movable, gas core (14) and guide pin bushing (12) between be equipped with spring (15).
2. The pressure maintaining valve structure for a gas bottle according to claim 1, wherein: the opening and closing mechanism (1) comprises a valve rod (8), a guide sleeve (9) which is sleeved with the valve body (10) in a threaded mode is arranged between the valve rod (8) and the valve body (10), an opening and closing piston (11) which is sleeved with the valve body (10) in a threaded mode is arranged at the lower end of the valve rod (8), flat air passing grooves (20) which are communicated with the guide sleeve (12) are formed in two side ends of the opening and closing piston (11), the flat air passing grooves (20) on one side are in plug connection with the end face of the plug (18), and a rubber piston head (17) which is nested with the opening and closing piston (11) and is in movable compression joint with the air inlet (16) is arranged at the lower end of the opening and closing piston (11).
3. The pressure maintaining valve structure for a gas bottle according to claim 2, wherein: the novel valve is characterized in that a hand wheel (5) sleeved with the valve rod (8) is arranged at the upper end of the valve rod (8), a lock nut (6) which is in compression joint with the hand wheel (5) and is in threaded sleeved connection with the valve rod (8) is arranged in the hand wheel (5), and a clamping ring (7) which is in clamping limit sleeved connection with the lock nut (6) is arranged between the upper portion of the lock nut (6) and the valve rod (8).
4. The pressure maintaining valve structure for a gas bottle according to claim 1, wherein: the outer circle of the side end of the valve body (10) is provided with a pipe thread (3), and the outer circle of the lower end of the valve body (10) is provided with a cone thread (4).
5. The pressure maintaining valve structure for a gas bottle according to claim 4, wherein: the gas cylinder is arranged at the lower end of the valve body assembly (2), a gas cylinder connecting joint seat (33) in threaded connection with the conical thread (4) is arranged between the gas cylinder (28) and the valve body assembly (2), and an O-shaped sealing ring (32) is arranged between the valve body (10) and the gas cylinder connecting joint seat (33).
6. The pressure maintaining valve structure for a gas bottle according to claim 5, wherein: a rubber sealing ring (29) sleeved with the valve body (10) is arranged between the upper end of the gas cylinder connecting joint seat (33) and the valve body (10), and a spring washer (30) sleeved with the valve body (10) is arranged between the rubber sealing ring (29) and the gas cylinder connecting joint seat (33).
7. The pressure maintaining valve structure for a gas bottle according to claim 4, wherein: the side end of the valve body assembly (2) is provided with an exhaust pipe (31) which is in threaded connection with the pipe thread (3).
8. The pressure maintaining valve structure for a gas bottle according to claim 1, wherein: the guide sleeve (12) is provided with a plurality of transverse ventilation grooves (22) which are annularly distributed on the outer circle, mounting threads (21) are arranged between two adjacent transverse ventilation grooves (22), the guide sleeve (12) is internally provided with guide holes (23) which are communicated with the guide sleeve (12) and are elastically sleeved with the air core (14), and the front end of the guide sleeve (12) is provided with a plurality of longitudinal ventilation grooves (24) which are communicated with the transverse ventilation grooves (22).
9. The pressure retaining valve structure for a gas bottle according to claim 1 or 8, characterized in that: the rear end of the air core (14) is provided with a spring accommodating hole (27) sleeved with the spring (15), the front end of the air core (14) is provided with a through hole (26) communicated with the spring accommodating hole (27), and sealing ring grooves II (25) for installing sealing rings are formed in the front outer ring and the rear outer ring of the air core (14).
10. The pressure maintaining valve structure for a gas bottle according to claim 1, wherein: the outer circle of the front part of the plug (18) is provided with a sealing ring groove I (19) for installing a sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223437793.2U CN218936024U (en) | 2022-12-22 | 2022-12-22 | Pressure maintaining valve structure for gas bottle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223437793.2U CN218936024U (en) | 2022-12-22 | 2022-12-22 | Pressure maintaining valve structure for gas bottle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218936024U true CN218936024U (en) | 2023-04-28 |
Family
ID=86092165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223437793.2U Active CN218936024U (en) | 2022-12-22 | 2022-12-22 | Pressure maintaining valve structure for gas bottle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218936024U (en) |
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2022
- 2022-12-22 CN CN202223437793.2U patent/CN218936024U/en active Active
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