CN216768557U - Air bag cock valve - Google Patents
Air bag cock valve Download PDFInfo
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- CN216768557U CN216768557U CN202123428648.3U CN202123428648U CN216768557U CN 216768557 U CN216768557 U CN 216768557U CN 202123428648 U CN202123428648 U CN 202123428648U CN 216768557 U CN216768557 U CN 216768557U
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- nut
- cock
- air bag
- knob switch
- rubber ring
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Abstract
The utility model discloses an air bag cock valve which comprises a cock main body, a knob switch, a bag opening nut and a gas production nut, wherein the outer surface of the tail end of the knob switch is connected with the inner wall of one end of the cock main body, the top end of the knob switch is connected with the gas production nut, the other end of the cock main body is connected with the bag opening nut, and a fluorine film silica gel pad is arranged between the gas production nut and the knob switch. The top of the air bag cock valve adopts a T-shaped design, so that a cock switch is easier to screw when the air bag cock valve is used, and the usability of the air bag in use is enhanced; by adopting the unique design of the bag opening nut, the screwing torque during installation is enhanced, and the sealing performance of the air bag is enhanced; the double-layer structure at the top is introduced to realize the function of direct needle insertion and sampling.
Description
Technical Field
The utility model relates to an air bag plug valve, and belongs to the technical field of valve design.
Background
In the field of environmental monitoring, and monitoring of pollutants in ambient air and waste gas of fixed pollution sources, a gas sampling bag is one of the most commonly used sampling appliances. Generally, a sample collection pump is used for pumping a gaseous sample into a gas bag at a certain speed, when the volume of the collected gas sample meets the requirement, the work of the sample collection pump is stopped, a valve on the gas sample bag is closed, then the sample is placed in a storage box, and finally the sample is taken back to a laboratory to be analyzed and tested by adopting a corresponding analysis instrument. In the process, the cock valve is an important component of the gas sampling bag, and the tightness of the cock directly influences whether the collected sample is lost in the transportation and storage processes, so that adverse effects are caused on analysis and testing; meanwhile, the easy-to-open degree of the cock directly affects the convenience of field operation.
At present, most of common air bag valves on the market are straight-through valve type cocks, the switch valves of the air bag valves are approximate to I-shaped structures, the torque is small when the air bag valves are screwed, great effort is taken, and the air bag valves are not favorable for convenience in operation. Secondly, the matching installation of the air bag body and the cock is mostly completed through a sandwich type combination of a bag opening nut, a pre-opened air bag body and a cock body between the existing cock and the air bag body, but the existing straight-through cock mostly adopts a circular bag opening nut and a cock body, and when the cock is installed in a screwing mode, the screwing force can be provided only through friction force, so that the air bag is poor in sealing performance.
Meanwhile, during laboratory analysis, sometimes the sample injection needle is needed to be directly pricked into the air bag for sampling, the through valve type cock cannot directly meet the use scene, an additional sealing cap is needed to be mounted at the air inlet of the cock, the sample injection needle is used for pricking the sealing cap and opening the cock switch, and then sampling can be completed, and operation is complex.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the technical defects in the prior art, solve the technical problems and provide an air bag cock valve.
The utility model specifically adopts the following technical scheme: the utility model provides an air pocket cock valve, includes cock main part, knob switch, sack nut, gas production nut, the terminal surface of knob switch with the inner wall of cock main part one end is connected, the top of knob switch with the gas production nut is connected, the other end of cock main part with the sack nut is connected, the gas production nut with be provided with fluorine membrane silica gel pad between the knob switch.
As a preferred embodiment, the cock main body comprises three T-shaped ports, a first port of the cock main body is connected with the bag opening nut, a second port of the cock main body is used for installing the fluorine film silica gel pad and the gas production nut, and a third port of the cock main body is a gas production inlet and is used for being externally connected with a sampling tube.
As a preferred embodiment, the inside outer surface of the pocket nut is in threaded mating engagement with the first port inner surface of the plug body.
As a preferred embodiment, a fluorine rubber ring m is arranged between the bag opening nut and the cock body, and the radial size of the inner side of the bag opening nut is matched with that of the fluorine rubber ring m.
As a preferred embodiment, the bag opening nut is a hollow hexagonal nut and is arranged in the air bag.
As a preferred embodiment, the outer surface of the tail end of the knob switch is sequentially provided with a fluorine rubber ring b and a fluorine rubber ring s, then the tail end of the knob switch is screwed into the cock body, and the top end of the knob switch is sequentially provided with a fluorine film silica gel pad and a gas production nut.
In a preferred embodiment, the radial dimension of the fluorine rubber ring b is larger than that of the fluorine rubber ring s.
As a preferred embodiment, the outer surface of the knob switch is in a trapezoid-like structure, and the diameter of the top end of the knob switch is larger than that of the tail end of the knob switch.
As a better embodiment, the bag opening nut, the knob switch and the gas production nut are all of hollow structures at the central positions, and after the bag opening nut, the knob switch and the gas production nut are installed on the cock body, the centers of the hollow centers are located on the same straight line.
In a preferred embodiment, the bag nut, the cock body and the gas nut are made of PVDF or PP or FEP or PTFE.
The utility model achieves the following beneficial effects: firstly, the bag opening nut of the air bag cock valve is a regular hexagon nut made of PP, PTFE, FEP, PVDF or other inert materials. Secondly, the double-layer sealing gasket is adopted in the air bag cock valve, so that the sealing performance of the cock is further enhanced. Thirdly, the air bag cock valve provided by the utility model adopts a fluorine film silica gel pad, so that on one hand, the sealing performance of the air bag valve can be ensured, and on the other hand, the functional requirement of direct needle insertion and sampling of a sample injection needle can be met. Fourthly, the top of the air bag cock valve adopts a double-layer structure of a fluorine film silica gel pad and a gas production nut, the cock can realize the puncture and gas extraction, and the continuous use of the cock can not be influenced after the puncture is finished. Fifth, the top of the air bag cock valve is designed in a T shape, so that the cock switch is easier to screw when in use.
Drawings
Fig. 1 is a schematic structural view of a preferred embodiment of the present invention.
The meanings of the symbols in the figures: the gas collecting device comprises a bag opening nut 1, a cock body 2, a knob switch 3, a gas collecting nut 4, a 5-fluorine membrane silica gel pad, a 6-fluorine rubber ring b, a 7-fluorine rubber ring s and a 8-fluorine rubber ring m.
Detailed Description
The utility model is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Example 1: as shown in figure 1, the utility model provides an air bag cock valve which comprises a cock main body 2, a knob switch 3, a bag opening nut 1 and a gas production nut 4, wherein the outer surface of the tail end of the knob switch 3 is connected with the inner wall of one end of the cock main body 2, the top end of the knob switch 3 is connected with the gas production nut 4, the other end of the cock main body 2 is connected with the bag opening nut 1, and a fluorine film silica gel pad 5 is arranged between the gas production nut 4 and the knob switch 3.
As a preferred embodiment, the cock body 2 comprises three T-shaped ports, a first port of the cock body 2 is connected with the bag opening nut 1, a second port of the cock body 2 is used for installing the fluorine film silica gel pad 5 and the gas production nut 4, and a third port of the cock body 2 is a gas production inlet and is used for being externally connected with a sampling pipe.
As a preferred embodiment, the inner outer surface of the bag opening nut 1 is provided with a circular thread and is in fit connection with the inner thread of the first port of the cock body 2.
As a preferred embodiment, a fluorine rubber ring m8 is arranged between the pocket nut 1 and the cock body 2, and the radial dimension of the inner side of the pocket nut 1 is matched with the radial dimension of the fluorine rubber ring m 8.
As a preferred embodiment, the bag opening nut 1 is a hollow hexagonal nut and is arranged in the air bag.
As a preferred embodiment, a fluorine rubber ring b6 and a fluorine rubber ring s7 are sequentially arranged on the outer surface of the tail end of the knob switch 3, then the tail end of the knob switch 3 is screwed into the cock body 2 until the knob switch is not screwed, and a fluorine film silica gel pad 5 and a gas production nut 4 are sequentially arranged on the top end of the knob switch 3.
In a preferred embodiment, the radial dimension of the fluoro-rubber ring b6 is greater than the radial dimension of the fluoro-rubber ring s 7.
In a preferred embodiment, the outer surface of the rotary switch 3 is of a trapezoid-like structure, and the diameter of the top end of the rotary switch 3 is larger than that of the tail end.
As a better embodiment, the bag opening nut 1, the knob switch 3 and the gas production nut 4 are all hollow structures at the central positions, and after being installed on the cock body 2, the centers of the hollow centers are located on the same straight line.
In a preferred embodiment, the bag nut 1, the cock body 2 and the gas production nut 4 are made of materials that do not affect volatile organic compounds, such as PVDF, PP, FEP, PTFE, etc.
The fluorine rubber ring b6, the fluorine rubber ring s7 and the fluorine rubber ring m8 are all made of fluorine-containing organic materials.
When the air bag valve is installed, the bag opening nut 1, the fluorine rubber ring m8, the pre-perforated air bag body and the cock body 2 are sequentially placed from bottom to top, the cock body 2 is held on one hand, the bag opening nut 1 is screwed on the other hand, when the bag opening nut 1 is screwed to be fixed by the hand, the bag opening nut 1 is clamped by a hexagonal nut wrench and is continuously screwed, the cock valve and the air bag body can be tightly installed, and good air tightness is guaranteed.
The utility model has the beneficial effects that: the top of the air bag cock valve adopts a T-shaped design, so that a cock switch is easier to screw when the air bag cock valve is used, and the usability of the air bag in use is enhanced; by adopting the unique design of the bag opening nut, the screwing torque during installation is enhanced, and the sealing performance of the air bag is enhanced; the double-layer structure at the top is introduced to realize the function of direct needle insertion and sampling.
Meanings of the related terms: PP: polypropylene, PTFE: polytetrafluoroethylene; FEP: teflon, PVDF: polyvinylidene fluoride.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks. These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks. These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Finally, it should be noted that: although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that: modifications and equivalents may be made to the embodiments of the utility model without departing from the spirit and scope of the utility model, which is to be covered by the claims.
Claims (10)
1. The utility model provides an air pocket cock valve, its characterized in that includes cock main part (2), knob switch (3), sack nut (1), adopts gas nut (4), the terminal surface of knob switch (3) with the inner wall of cock main part (2) one end is connected, the top of knob switch (3) with adopt gas nut (4) to be connected, the other end of cock main part (2) with sack nut (1) is connected, adopt gas nut (4) with be provided with fluorine membrane silica gel pad (5) between knob switch (3).
2. An air bag cock valve according to claim 1, characterized in that the cock body (2) comprises three T-shaped ports, the first port of the cock body (2) is connected with the bag mouth nut (1), the second port of the cock body (2) is used for mounting the fluorine film silica gel pad (5) and the gas production nut (4), and the third port of the cock body (2) is a gas production inlet for externally connecting a sampling tube.
3. An air bag tap valve according to claim 2 characterised in that the inside outer surface of the pocket nut (1) is threadedly engaged with the first tap body (2) inner surface.
4. An air bag plug valve according to claim 3, characterised in that a fluorine rubber ring m (8) is arranged between the pocket nut (1) and the plug body (2), the inside radial dimension of the pocket nut (1) being adapted to the radial dimension of the fluorine rubber ring m (8).
5. An air bag plug valve according to claim 1, wherein the bag opening nut (1) is a hollow hexagonal nut and is mounted in the air bag.
6. An air bag cock valve according to claim 1, characterized in that the outer surface of the end of the knob switch (3) is provided with a fluorine rubber ring b (6) and a fluorine rubber ring s (7) in sequence, then the end of the knob switch (3) is screwed into the cock body (2), and the top end of the knob switch (3) is provided with the fluorine film silica gel pad (5) and the gas production nut (4) in sequence.
7. An airbag plug valve as in claim 6 wherein the radial dimension of the fluorine rubber ring b (6) is greater than the radial dimension of the fluorine rubber ring s (7).
8. An air bag plug valve according to claim 1, wherein the outer surface of the knob switch (3) is of a trapezoidal-like configuration, and the diameter of the tip of the knob switch (3) is greater than the diameter of the tip.
9. An air bag cock valve according to claim 1, characterised in that the bag mouth nut (1), the knob switch (3) and the gas production nut (4) are all hollow in the central position and the centers of the hollows are on the same line when mounted to the cock body (2).
10. An airbag plug valve according to claim 1, wherein the pocket nut (1), the plug body (2) and the gas nut (4) are made of PVDF or PP or FEP or PTFE.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123428648.3U CN216768557U (en) | 2021-12-31 | 2021-12-31 | Air bag cock valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123428648.3U CN216768557U (en) | 2021-12-31 | 2021-12-31 | Air bag cock valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216768557U true CN216768557U (en) | 2022-06-17 |
Family
ID=81970429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123428648.3U Active CN216768557U (en) | 2021-12-31 | 2021-12-31 | Air bag cock valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216768557U (en) |
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2021
- 2021-12-31 CN CN202123428648.3U patent/CN216768557U/en active Active
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