CN220391961U - Valve for gas sampling bag - Google Patents
Valve for gas sampling bag Download PDFInfo
- Publication number
- CN220391961U CN220391961U CN202322045418.1U CN202322045418U CN220391961U CN 220391961 U CN220391961 U CN 220391961U CN 202322045418 U CN202322045418 U CN 202322045418U CN 220391961 U CN220391961 U CN 220391961U
- Authority
- CN
- China
- Prior art keywords
- valve
- fastener
- sampling bag
- valve body
- gas sampling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005070 sampling Methods 0.000 title claims abstract description 25
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 238000009434 installation Methods 0.000 abstract description 7
- 230000006835 compression Effects 0.000 abstract description 2
- 238000007906 compression Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model relates to a valve of a gas sampling bag. The valve body and the fastener are buckled with each other in a concave-convex manner and are not threads, so that the connection part is not loosened due to clockwise rotation of the valve body and the fastener, and the valve body and the fastener cannot be screwed clockwise or loosened like the threads; the sealing gasket with the corresponding thickness is selected, and the film with the specified thickness has consistent compression degree, so that the inconsistent screwing degree of the screw fastening screw can be solved; the installation production efficiency is improved, the installation is more convenient, and the air leakage is not easy to happen when the air conditioner rotates clockwise or anticlockwise.
Description
Technical Field
The utility model relates to a valve of a gas sampling bag.
Background
The valve used on the currently known gas sampling bag is generally composed of a valve main body, a valve switch knob, a fastener and a sealing gasket, wherein the fastener is connected with the valve main body through threads, the valve main body is an internal thread, the fastener is an external thread, the fastener penetrates through a hole of a film of the sampling bag, the sealing gasket is arranged, and after the fastener is screwed with the valve main body through threads, the joint of the valve main body and the fastener is ensured to be sealed; or the valve body is an external thread, a sealing gasket is sleeved on the valve body, the valve body penetrates through the film hole of the sampling bag, the fastener adopts a nut to lock the external thread of the valve body, and the valve can be installed on the film of the sampling bag, so that the joint of the valve and the film is airtight. In the two mounting modes, when the valve main body rotates anticlockwise, particularly materials with lower friction coefficients, such as a valve processed by polytetrafluoroethylene, the screw threads are easy to loosen, so that the joint of the valve and the film leaks; the screw mounting mode can lead to the possibility of air leakage due to inconsistent screw screwing degree; the screw thread mode valve is installed on the sampling bag film, and the efficiency of installing the valve is also lower.
Disclosure of Invention
In order to solve the problems that the screw teeth of the existing gas sampling bag valve are easy to loosen and leak gas, the installation efficiency is low and the like, the utility model provides a non-threaded gas sampling bag valve, the valve is installed on a sampling bag film in a non-threaded fastening mode, a groove convex ring is adopted at the joint of a valve main body and a fastener, and the connection of the valve main body and the fastener is realized by buckling the concave and the convex parts, so that the valve is installed on the sampling bag film.
The technical scheme adopted for solving the technical problems is as follows: the unthreaded gas sampling bag valve consists of a valve main body, a valve switch knob, a fastener and a sealing gasket. The valve main body adopts the recess with the fastener junction, and the fastener has the round bulge loop, and the fastener passes the hole of sampling bag film, with sealing washer cover fastener and push down the film, and the valve main body links to each other with the fastener under certain external force, and unsmooth looks knot and valve main body bottom border compress tightly sealing washer, realizes the effect that the screw thread links to each other the locking like this. For ease of installation, the valve body is pressed with the opening at one end having a certain inclination.
Or the valve body is provided with a convex ring, and the inside of the fastening piece is provided with a groove corresponding to the convex ring of the valve body. The valve main body penetrates through the film hole, the sealing gasket is sleeved on the valve main body to press the film, the fastening piece presses the sealing gasket under a certain external force, the inner groove of the fastening piece is buckled with the convex ring of the valve main body, and the fastening piece keeps a certain pressure to press the sealing gasket, so that the joint is sealed and airtight. For ease of installation, the fastener is crimped with a taper in the opening at the end. In the valve with the design, the valve switch knob needs to be inserted into the side hole of the valve main body after the fastener is installed in place.
The valve main body and the fastener are buckled in a concave-convex manner and are not threads, the valve main body and the fastener rotate clockwise and anticlockwise and do not influence the loosening of the joint, and the valve main body and the fastener cannot be screwed clockwise and unscrewed anticlockwise like threads; whether the valve main body and the fastening piece leak air or not is related to the position of the groove convex ring, the thickness of the sealing gasket and the thickness of the film, the sealing gasket with the corresponding thickness is selected for the determined position of the groove convex ring, and the film with the specified thickness is consistent in compression degree, so that the inconsistent screwing degree of the screw fastening screw can be solved; through the improvement of valve main part and fastener connected mode, improved installation production efficiency, the installation is more convenient, and clockwise or anticlockwise rotation is difficult for advantages such as gas leakage.
Drawings
FIG. 1 is a schematic cross-sectional view of a valve body of a gas sampling bag valve of the present utility model.
FIG. 2 is a schematic cross-sectional view of a gas sampling bag valve fastener of the present utility model.
FIG. 3 is a schematic cross-sectional view of a gas sampling bag valve switch knob of the present utility model.
FIG. 4 is a schematic cross-sectional view of a gas sampling bag valve fastener of the present utility model.
Fig. 5 is a schematic cross-sectional view of a valve body of a gas sampling bag valve of the present utility model.
Description of the embodiments
As shown in fig. 1, the valve body 100 of the gas sampling bag is pressed with the opening of the one end 101 having a certain inclination, so that the convex ring 201 on the fastening piece can slide into the inner groove 102 of the valve body under a certain external force, and the size of the groove 102 of the valve body is consistent with the size of the convex ring 201 of the fastening piece 200; the valve body middle lateral hole 103 is vertically intersected with the valve body center through hole 104, and the valve body lateral hole 103 is used for installing a valve switch knob 302; the other end 105 of the valve body is adapted to interface with an external air source.
As shown in fig. 2, the fastener 200 has a ring of raised rings 201 that can snap into the recess 102 in the valve body under some force. The fastener has a through hole 202 in the center for passage of gas, which through hole 202 is in line with the central through hole 104 of the valve body after being mounted to the valve body.
The sealing gasket is positioned between the valve body 100 and the valve base 200, and is mainly used for pressing the sampling bag film, so that the joint is sealed and airtight.
The valve switch knob 300 shown in fig. 3 is provided with a side hole 301, the valve switch knob 302 is inserted into the side hole 103 of the valve main body, the side hole 301 of the valve switch knob is in line with the central through hole 104 of the valve main body, and the valve is in an open state; when the side hole 301 of the valve switch knob vertically crosses the valve body center through hole 104, the valve is in a closed state.
As shown in fig. 4, the fastener 400 is pressed with the end 401 open at a slope such that the fastener presses onto the valve body 500 and the fastener recess 402 engages with the recess of the valve body 501.
As shown in fig. 5, a convex ring 501 is provided on the valve body 500 to engage with the groove of the fastener 402, so as to compress the sealing gasket and the film between the valve body and the fastener.
Claims (2)
1. The gas sampling bag valve consists of a valve main body, a valve switch knob, a fastener and a sealing gasket, and is characterized in that: the valve body and the fastener are connected in a way that the groove and the convex ring are buckled, the sealing gasket and the film are tightly pressed between the valve body and the fastener, and the valve is fixed on the film of the sampling bag.
2. The gas sampling bag valve according to claim 1, wherein: when the valve body or the fastener is provided with a groove, the opening at the pressing end has a certain inclination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322045418.1U CN220391961U (en) | 2023-08-01 | 2023-08-01 | Valve for gas sampling bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322045418.1U CN220391961U (en) | 2023-08-01 | 2023-08-01 | Valve for gas sampling bag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220391961U true CN220391961U (en) | 2024-01-26 |
Family
ID=89608744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322045418.1U Active CN220391961U (en) | 2023-08-01 | 2023-08-01 | Valve for gas sampling bag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220391961U (en) |
-
2023
- 2023-08-01 CN CN202322045418.1U patent/CN220391961U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |