CN220418919U - Air collecting bag valve - Google Patents
Air collecting bag valve Download PDFInfo
- Publication number
- CN220418919U CN220418919U CN202321821533.7U CN202321821533U CN220418919U CN 220418919 U CN220418919 U CN 220418919U CN 202321821533 U CN202321821533 U CN 202321821533U CN 220418919 U CN220418919 U CN 220418919U
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- Prior art keywords
- valve
- hollow rod
- sleeve body
- rod body
- gas
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- 238000007789 sealing Methods 0.000 claims abstract description 45
- 239000000463 material Substances 0.000 claims description 7
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 239000000741 silica gel Substances 0.000 claims description 5
- 229910002027 silica gel Inorganic materials 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 4
- 238000007731 hot pressing Methods 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 239000011888 foil Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 17
- 230000000694 effects Effects 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 53
- 238000000034 method Methods 0.000 description 4
- 238000003825 pressing Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006806 disease prevention Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- Bag Frames (AREA)
Abstract
The utility model discloses a gas collecting bag valve, which comprises a valve body and a valve bottom; the valve body is of a T-shaped structure, a side branch is used as a valve mouth, and a necking down part is arranged at the lower part of a valve cavity of the valve body; the valve bottom comprises a hollow rod body and a bonding disc, and the hollow rod body is buckled at the contracted neck position of the valve cavity through the annular back-off; a rotary switch is rotatably arranged at the top of the valve cavity, and a sleeve body is formed on the rotary switch; a structural sealing ring is formed on the outer tube surface of the lower part of the sleeve body; the sleeve body is sleeved on the hollow rod body, and a clearance space is reserved between the sleeve body and the hollow rod body and used as a gas flow channel; the sleeve body can axially move along the threaded connection part by rotating the rotary switch, and the valve nozzle is formed at the stroke middle position of the sealing ring. The utility model has the advantages of simple structure, convenient and quick assembly compared with other valves, good sealing effect, low failure rate and low manufacturing and production cost.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to an air collecting bag valve.
Background
The gas sampling bag, also called gas collecting bag, is widely used for gas sampling and storage in the departments of disease prevention, environmental monitoring, labor protection, safety supervision, military, weather, scientific research and teaching, metallurgy, petrochemical industry, railway, building materials and the like. Can be used for filling various high-purity gases and simultaneously can also be used for filling CO and H 2 S、PH 3 And various standard mixed gases such as hydrocarbon and other gas sampling, and is an ideal substitute product for rubber bladder.
The special valve for the air collecting bag in the market is characterized in that the bottom of the valve body is assembled by adopting a spiral, the valve body is provided with double-head threads, the structure and the injection molding process are complex, and the problems of high die cost, high material cost, difficult assembly and the like generally exist, so that the problems of high production cost and high manufacturing reject ratio are caused; in addition, the condition of non-tightening easily occurs in the use process, and two sealing rings are needed to be adopted for sealing at the rotary switch during rotary sealing, so that the sealing performance is improved; but the fit clearance between the seal rings of such a double seal ring structure is prone to product failure.
Disclosure of Invention
The technical problem solved by the utility model is to provide a gas collecting bag valve which can be used for solving the defects in the technical background.
The technical problems solved by the utility model are realized by adopting the following technical scheme:
the gas collecting bag valve comprises a valve body and a valve bottom, wherein the valve body and the valve bottom are made of plastic materials in a molding way and are of a separable structure;
the valve body is of a T-shaped structure, the side branch is used as a valve mouth, the valve body is provided with a valve cavity, the valve cavity is a cylindrical cavity, and a shrinkage neck communicated with the valve cavity is arranged at the lower part of the valve cavity; the valve bottom comprises a hollow rod body and an attaching disc formed at the bottom of the hollow rod body, the top of the hollow rod body is provided with an opening, an annular back-off is formed in the middle of the outer rod surface, and the valve bottom is buckled at the contracted neck position of the valve cavity through the annular back-off;
the top of the valve cavity is opened, a rotary switch is rotatably arranged at the opening position, and a sleeve body which downwards extends into the valve cavity is formed on the rotary switch; the outer tube surface of the sleeve body and the valve cavity wall are provided with matched threaded screwed parts, the lower outer tube surface of the sleeve body is provided with a structural sealing ring, and the structural sealing ring is abutted against the valve cavity wall at the outer side so as to realize sealing and sealing between the outer wall of the sleeve body and the valve cavity wall;
the sleeve body is sleeved on the hollow rod body, and a clearance space is reserved between the sleeve body and the hollow rod body and used as a gas flow channel;
the sleeve body can axially move along the threaded connection part by rotating the rotary switch, and the valve nozzle is formed at the stroke middle position of the sealing ring.
As a further limitation, the gas collection bag valve is applied to an aluminum foil gas collection bag or a PTFE gas collection bag.
As a further limitation, a sealing structure assembly part is reserved on the opposite surface of the bonding disc of the valve bottom and the bonding surface of the valve body, and the sealing structure adopted on the sealing structure assembly part is preferably an O-shaped sealing ring.
As a further limitation, the attaching disc and the hollow rod body are integrally formed, and a reserved hot pressing area is formed on the upper surface of the attaching disc corresponding to the outer edge of the hollow rod body.
As a further limitation, the top of the rotary switch is also provided with a gas collecting hole, the lower part of the gas collecting hole is connected with a gas collecting pipe section, the gas collecting pipe section is opposite to the top opening of the hollow rod body, and the gas collecting pipe section is structurally sealed at the bottom opening position through a silica gel pad.
As a further limitation, a ring-shaped blind groove is formed at the lower part of the sleeve body, and the structural sealing ring is detachably assembled in the ring-shaped blind groove.
The beneficial effects are that: according to the air collecting bag valve, the connecting structure of the valve body and the valve bottom is changed, and the sealing is carried out by utilizing the pressure riveting back-off structure, so that the manufacturing cost of a die and the injection molding production cost can be effectively reduced, and the assembly link process is simplified;
the back-off structure design of the valve can effectively rebound and fall off of the valve, solves the problems of poor manufacturing process and assembly production time saving, and can achieve the effect of rotating and sealing in the use process; the gas extraction port and the gas exhaust hole are separated by matching with the spiral switch, only a single seal is needed, the problem of gas leakage of a plurality of matching gaps of the sealing ring is reduced, and the size and structure are changed to match so as to achieve the purpose of saving materials;
the valve is simple and easy to operate and is quick to use for users; can be matched with bags made of various materials for use so as to meet the wide use environment and requirements.
Drawings
FIG. 1 is a schematic diagram of a preferred embodiment of the present utility model.
Wherein: 1. a valve body; 2. a valve bottom; 3. a rotary switch; 4. a valve mouth; 5. a valve cavity; 6. attaching a disc; 7. a hollow rod body; 8. annular back-off; 9. pressing a sealing ring; 10. a sleeve body; 11. a structural seal ring; 12. a silica gel pad; 13. a gas collection hole; 14. a threaded connection.
Detailed Description
The utility model is further described with reference to the following detailed drawings in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the implementation of the utility model easy to understand.
Referring to a preferred embodiment of a gas collecting bag valve in fig. 1, in this embodiment, the gas collecting bag valve is used as a gas collecting structural component of a PTFE gas collecting bag, and comprises a separable valve body 1 and a valve bottom 2, wherein the valve body 1 and the valve bottom 2 are made of plastic materials by molding.
The valve body 1 is of a three-way structure and is provided with a cylindrical valve cavity 5, one side of the valve cavity 5 is communicated with a side branch of the three-way structure, and the side branch is used as a valve mouth 4; the valve cavity 5 is opened on the top surface, and a rotary switch 3 is rotatably arranged on the opened surface. Meanwhile, the valve body 1 is further provided with a necking neck communicated with the valve cavity 5 at the lower part of the valve cavity 5, and the valve bottom 2 is assembled at the bottom of the valve body 1 through the necking neck.
As a specific implementation scheme, an internal thread surface corresponding to the thread screwing part 14 is formed on the upper cavity wall of the valve cavity 5 of the valve body 1, a rotary switch 3 is formed on the open surface of the valve cavity 5, a sleeve body 10 which downwards extends into the valve cavity is formed on the rotary switch 3, the top surface of the sleeve body 10 is sealed by a rotating disc surface of the rotary switch 3, an external thread surface in the thread screwing part 14 is correspondingly formed on the upper part of the sleeve body 10, the rotary switch 3 is screwed on the top surface opening position of the valve body 1 through the thread screwing part 14 matched with the internal thread surface, meanwhile, a ring-shaped blind groove is formed in the lower area of the sleeve body 10 corresponding to the thread screwing part 14, a structural sealing ring 11 is detachably assembled in the ring-shaped blind groove, and the outer ring surface of the structural sealing ring 11 is abutted against the inner wall of the valve cavity 5 so as to play a role in air sealing.
The rotary switch 3 can move in the axial direction of the screw thread screwing part 14 by rotating, and drives the sleeve body 10 to move up and down in the moving process, so as to drive the structural sealing ring 11 sleeved on the sleeve body 10 to move up and down, and the side branch channel corresponding to the valve mouth 4 forms a middle position for moving up and down with the sealing ring 11. For the visual line of the above functions, a sufficient rotating space should be reserved between the rotary switch 3 and the assembly position of the valve body 1.
In this embodiment, the valve bottom 2 has a bonding disc 6, the bonding disc 6 may be circular or other shapes, a hollow rod 7 matching with the inner neck size of the bottom of the valve cavity 5 is formed on the upper surface of the bonding disc 6, the hollow rod 7 penetrates up and down and is integrally formed with the bonding disc 6 on the bottom sidewall, an annular back-off 8 is formed on the middle of the hollow rod 7, and the annular back-off 8 can be pressed into the valve cavity 5 through plastic material and is fastened at the variable diameter step position of the inner neck.
In the assembled state of the valve bottom 2 inserted into the valve body 1, the sleeve body 10 on the rotary switch 3 is sleeved on the hollow rod body, and a clearance space is reserved between the inner tube surface of the sleeve body 10 and the outer rod surface of the hollow rod body 7 as a gas flow channel.
In this embodiment, an assemblable structure is provided between the valve body 1 and the valve bottom 2, for fixedly assembling the valve at a selected position of the air collecting bag, in order to improve the assembling performance of the valve body 1 and the valve bottom 2 on the air collecting bag, a reserved hot pressing area is formed on the upper surface of the disc body by the attaching disc 6 corresponding to the outer edge of the hollow rod body 7, and meanwhile, a ring-shaped sealing ring groove for assembling the pressing sealing ring 9 is formed on the attaching surface of the lower end surface of the valve body 1 corresponding to the valve bottom 2.
When the gas collecting bag valve is assembled on the PTFE gas collecting bag before use, a gas collecting bag hole is punched at a selected position on the PTFE gas collecting bag, the valve bottom 2 is penetrated out of the gas collecting bag hole at one side of the interior of the gas collecting bag (the gas collecting bag can be thermally pressed on the attaching disc 6 of the valve bottom 2 when necessary), meanwhile, a pressing sealing ring 9 is assembled on the lower end face of the valve body 1, and the valve body 1 is pressed on the hollow rod body 7 of the valve bottom 2 at the inner neck-collecting position, so that the gas collecting bag body is pressed, and the sealing assembly effect is achieved; and then the rotary switch 3 is sleeved with the structural sealing ring 11, and the rotary assembly is completed at the opening of the top surface of the valve body 1, namely the assembly of the valve is completed on the PTFE gas collecting bag.
When the gas collecting bag valve is used, the structural sealing ring 11 can be made to move up and down by rotating the rotary switch 3, when the position of the structural sealing ring 11 is higher than the plane of the valve mouth 4 of the valve body 1, the gas can be exhausted or collected, if the gas is collected, the gas enters from the valve mouth 4, flows into the hollow rod body 7 through the gap between the sleeve body 10 and the hollow rod body 7 and continuously enters the gas collecting bag body, and when the gas exhausting operation is carried out, the flow is opposite.
When the structural sealing ring 11 is lower than the plane of the valve mouth 4 of the valve body 2, the valve body 2 is in a closed state, and the structural sealing ring can be used for storing the gas collected in the gas collecting bag.
In this embodiment, in order to facilitate the gas production operation, a gas production hole 13 is further provided at the top of the rotary switch 3, the lower part of the gas production hole 13 is connected with a gas production pipe section, the gas production pipe section is opposite to the top opening of the hollow rod body 7, and the gas production pipe section is structurally sealed at the bottom opening position by a silica gel pad 12; when gas production is required, the channel needle can be adopted to pierce the silica gel pad 12 from the gas production hole 13 of the rotary switch 3, so that the gas in the bag is connected through the hollow rod body 7, and the gas production purpose is achieved.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be appreciated by those skilled in the art that these examples are for illustrative purposes only and are not intended to limit the scope of the present utility model. Furthermore, it is to be understood that various changes, modifications and/or variations may be made by those skilled in the art after reading the technical content of the present utility model, and that all such equivalents are intended to fall within the scope of protection defined in the claims appended hereto.
Claims (7)
1. The air collecting bag valve is characterized by comprising a separable valve body and a valve bottom;
the valve body is of a T-shaped structure, the side branch is used as a valve mouth, the valve body is provided with a valve cavity, the valve cavity is a cylindrical cavity, and a shrinkage neck communicated with the valve cavity is arranged at the lower part of the valve cavity; the valve bottom comprises a hollow rod body and an attaching disc formed at the bottom of the hollow rod body, the top of the hollow rod body is provided with an opening, an annular back-off is formed in the middle of the outer rod surface, and the valve bottom is buckled at the contracted neck position of the valve cavity through the annular back-off;
the top of the valve cavity is opened, a rotary switch is rotatably arranged at the opening position, and a sleeve body which downwards extends into the valve cavity is formed on the rotary switch; the outer tube surface of the sleeve body and the valve cavity wall are provided with matched threaded screwed parts, the lower outer tube surface of the sleeve body is provided with a structural sealing ring, and the structural sealing ring is abutted against the valve cavity wall at the outer side so as to realize sealing and sealing between the outer wall of the sleeve body and the valve cavity wall;
the sleeve body is sleeved on the hollow rod body, and a clearance space is reserved between the sleeve body and the hollow rod body and used as a gas flow channel;
the sleeve body can axially move along the threaded connection part by rotating the rotary switch, and the valve nozzle is formed at the stroke middle position of the sealing ring.
2. The air bag valve of claim 1, wherein the valve body and the valve bottom are both formed of plastic material.
3. The gas bag valve according to claim 1, wherein the gas bag valve is applied to an aluminum foil gas bag or a PTFE gas bag.
4. The air bag valve according to claim 1, wherein a sealing structure assembling part is reserved on the opposite surface of the attaching disc of the valve bottom and the attaching surface of the valve body, and a sealing structure adopted on the sealing structure assembling part is an O-shaped sealing ring.
5. The air bag valve according to claim 1, wherein the attaching disc and the hollow rod body are integrally formed, and a reserved hot pressing area is formed on the upper surface of the attaching disc corresponding to the outer edge of the hollow rod body.
6. The gas collecting bag valve according to claim 1, wherein the rotary switch top is further provided with a gas collecting hole, a gas collecting pipe section is connected to the lower portion of the gas collecting hole, the gas collecting pipe section is opposite to the top opening of the hollow rod body, and the gas collecting pipe section is structurally sealed at the bottom opening position through a silica gel pad.
7. The air bag valve according to claim 1, wherein a ring-shaped blind groove is formed in the lower portion of the sleeve body, and the structural sealing ring is detachably assembled in the ring-shaped blind groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321821533.7U CN220418919U (en) | 2023-07-12 | 2023-07-12 | Air collecting bag valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321821533.7U CN220418919U (en) | 2023-07-12 | 2023-07-12 | Air collecting bag valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220418919U true CN220418919U (en) | 2024-01-30 |
Family
ID=89656221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321821533.7U Active CN220418919U (en) | 2023-07-12 | 2023-07-12 | Air collecting bag valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220418919U (en) |
-
2023
- 2023-07-12 CN CN202321821533.7U patent/CN220418919U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |