CN212718066U - Gas cylinder valve sealing device - Google Patents
Gas cylinder valve sealing device Download PDFInfo
- Publication number
- CN212718066U CN212718066U CN202020516823.0U CN202020516823U CN212718066U CN 212718066 U CN212718066 U CN 212718066U CN 202020516823 U CN202020516823 U CN 202020516823U CN 212718066 U CN212718066 U CN 212718066U
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- China
- Prior art keywords
- valve
- sealing
- cap
- valve body
- valve rod
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- 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.)
- Expired - Fee Related
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- 238000007789 sealing Methods 0.000 title claims abstract description 75
- 238000000034 method Methods 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000003825 pressing Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000003754 machining Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
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Abstract
The utility model provides a pair of gas cylinder bottle valve sealing device includes hand wheel, valve rod, valve body and presses the cap, the hand wheel and press the cap to install in proper order in on the valve rod, press the cap set up in the hand wheel below, press the outside threaded connection of cap in the valve body, the valve body is equipped with inlet channel, gas outlet channel and valve pocket, the valve pocket communicates respectively inlet channel and gas outlet channel, the lower extreme of valve rod is equipped with piston assembly, piston assembly install in the valve pocket, and with valve body threaded connection, piston assembly and can form the valve that can open and shut between the valve body, be equipped with the seal groove on the valve rod, the seal groove set up in the lateral wall of valve rod, be equipped with the sealing washer in the seal groove, the sealing washer install in the seal groove, its overall structure design is ingenious, the leakproofness is good, The assembly process is simple and convenient, and the service life of the device can be effectively prolonged.
Description
Technical Field
The utility model belongs to the technical field of the technique of valve and specifically relates to a gas cylinder bottle valve sealing device.
Background
The sealing device for cylinder valve of gas cylinder is a sealing device capable of ensuring that the gas does not leak when the high-pressure or low-pressure gas in the container passes through the cylinder valve.
In the prior art gas cylinder valve sealing device shown in the attached fig. 1 and 2, an O-shaped sealing ring 2 is arranged on the inner hole wall of a pressing cap 3 and is in contact sealing with the outer circle of a valve rod 4; however, the O-ring 2 between the pressure cap 3 and the valve rod 4 in the prior art has the following disadvantages: when high-pressure gas impacts, the O-shaped sealing ring is round in shape, so that the O-shaped sealing ring is easy to deform in a sealing groove, such as back-twisting and back-peeling, and the like, and the gas leakage condition is easy to occur; secondly, the single-layer O-shaped sealing ring 2 in the prior art has poor sealing effect and is easy to generate air leakage; thirdly, because the O-shaped sealing ring 2 in the prior art is arranged on the inner hole wall of the pressing cap 3, the processing difficulty of the whole pressing cap 3 is increased, and the subsequent installation process is complicated.
SUMMERY OF THE UTILITY MODEL
A primary object of the present invention is to provide a gas cylinder valve sealing device, which overcomes the difference in the prior art, and can perform sealing operation on the gas cylinder valve in a good sealing effect, and the production process is also convenient and simple.
In order to achieve the above purpose, the utility model adopts the technical scheme that: the utility model provides a gas cylinder bottle valve sealing device includes hand wheel, valve rod, valve body and presses the cap, the hand wheel and press the cap to install in proper order on the valve rod, press the cap set up in the hand wheel below, press the outside threaded connection of cap in the valve body, the valve body is equipped with inlet channel, air outlet channel and valve pocket, the valve pocket communicates respectively inlet channel and air outlet channel, the lower extreme of valve rod is equipped with piston assembly, piston assembly install in the valve pocket, and with valve body threaded connection, piston assembly and can form the valve that can open and shut between the valve body, be equipped with the seal groove on the valve rod, the seal groove set up in the lateral wall of valve rod, be equipped with the sealing washer in the seal groove, the sealing washer install in the seal groove.
According to the utility model discloses an embodiment, the inboard butt of sealing washer in the excircle surface of valve rod, the outside of sealing washer with the inside wall sealing contact of valve body.
According to the utility model discloses an embodiment, the cross-section of sealing washer is horizontal convex surface structure.
According to the utility model discloses an embodiment, the upper and lower both ends of sealing washer all are equipped with the retaining ring.
According to the utility model discloses an embodiment, press the cap with be equipped with the antifriction pad between the valve rod, the antifriction pad cover is located the surface of valve rod.
According to the utility model discloses an embodiment, the upper end of antifriction pad is the sawtooth structure.
The utility model discloses compared with prior art have following advantage:
(1) the sealing groove is arranged on the outer side wall of the valve rod, so that the sealing groove is more convenient and simpler to process, and meanwhile, the sealing ring is easier to assemble, thereby improving the production efficiency and reducing the production cost;
(2) because the cross-sectional structure of sealing washer is horizontal convex surface, the convex surface bottom and the valve rod excircle sealing contact of its horizontal convex surface, the protruding face and the valve body inside wall sealing contact of horizontal convex surface, and all be equipped with the retaining ring on two upper and lower faces of sealing washer, can guarantee effectively that when high-pressure gas assaults, it not only can not take place to turn round, anti-deformation such as shell, and the retaining ring can also strengthen its sealing performance when the stability of reinforcing sealing washer for its practicality is stronger.
Drawings
Figure 1 is a schematic cross-sectional view of a prior art cylinder valve seal.
Fig. 2 is an enlarged schematic view at a in fig. 1.
Fig. 3 is a schematic cross-sectional structure according to a preferred embodiment of the present invention.
Fig. 4 is an enlarged schematic view of division B in fig. 3.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.
As shown in fig. 3 to 4, a gas cylinder valve sealing device 1 includes a hand wheel 10, a valve rod 20, a valve body 30 and a pressing cap 40, the hand wheel 10 and the pressing cap 40 are sequentially mounted on the valve rod 20, the hand wheel 10 is provided with a spring and a hand wheel cover, one end of the spring is connected to the hand wheel 10, the other end of the spring is connected to the hand wheel cover, the hand wheel 10 cover is connected to the valve rod 20 through a thread, people can control the up-and-down movement of the valve rod 20 through the hand wheel cover and the hand wheel 10, the pressing cap 40 is arranged below the hand wheel 10, the outer end of the pressing cap 40 is connected to the valve body 30 through a thread, and the pressing cap 40 is connected to the valve body 30 through a thread, so that the pressing cap 40 is more convenient to assemble and disassemble the valve body 30, and the maintenance and replacement of the interior of the gas cylinder valve; the valve body 30 is provided with an air inlet passage 31, an air outlet passage 32 and a valve cavity 33, the valve cavity 33 is respectively communicated with the air inlet passage 31 and the air outlet passage 32, the lower end of the valve rod 20 is provided with a piston assembly 21, the piston assembly 21 is installed in the valve cavity 33 and is in threaded connection with the valve body 30, an openable and closable valve 50 is formed between the piston assembly 21 and the valve body 30, when the valve works, the hand wheel 10 is rotated anticlockwise, the hand wheel 10 is covered by the hand wheel 10 to drive the piston assembly 21 to rotate through the valve rod 20, so that the piston assembly 21 moves upwards, and the valve 50 is opened, therefore, the air inlet passage 31, the valve cavity 33 and the air outlet passage 32 are sequentially communicated, and therefore, air can enter the air outlet passage 32 from the air inlet passage 31 through the valve cavity 33; the improved valve is characterized in that a sealing groove 22 is formed in the valve rod 20, the sealing groove 22 is formed in the outer side wall of the valve rod 20, a sealing ring 23 is arranged in the sealing groove 22, the sealing ring 23 is installed in the sealing groove 22, machining of the sealing groove 22 is more convenient and simpler, machining steps of the sealing groove are simplified, meanwhile, assembly of the sealing ring 23 is also facilitated, accordingly, production efficiency is improved, production cost is reduced, and convenience is brought to follow-up installation and replacement of the sealing ring 23.
The inner side of the sealing ring 23 abuts against the outer circle surface of the valve rod 20, the outer side of the sealing ring 23 is in sealing contact with the inner side wall of the valve body 30, the sealing ring 23 can seal the gap between the valve rod 20 and the valve body 30, so that the sealing performance between the valve rod 20 and the valve body 30 is effectively ensured when the valve rod 20 moves up and down relative to the valve body 30, and the phenomenon of air leakage is effectively avoided.
Wherein, the cross-section of sealing washer 23 is horizontal convex surface structure, because the cross-section of sealing washer 23 is horizontal convex surface structure, the convex surface bottom of its horizontal convex surface with valve rod 20's excircle sealing contact, its horizontal convex surface protruding face with valve body 30's inside wall sealing contact, when high-pressure gas strikes, make horizontal convex surface bottom under the effect of air current pressure with contact between valve rod 20's the excircle is inseparabler, makes its sealed effect better from this, in addition because it is horizontal convex surface structure, can guarantee effectively when high-pressure gas strikes, it can not take place to invert, anti-deformation such as peeling.
Wherein, the upper and lower two sides of sealing washer 23 all are equipped with retaining ring 24, retaining ring 24 set up in the upper and lower two sides of sealing washer 23, work as sealing washer 23 is when carrying out sealed operation, retaining ring 24 can further carry out the sealed operation of packing to the space, not only can strengthen wholly the sealed effect of sealing washer 23, simultaneously retaining ring 24 also can improve the stability of sealing washer 23 for high-pressure gas is when assaulting, and it can not take place anti-deformation such as turn round, anti-peeling, makes the sealed effect of whole device better from this.
An anti-wear pad 41 is arranged between the pressure cap 40 and the valve rod 20, the anti-wear pad 41 is sleeved on the outer surface of the valve rod 20, and the anti-wear pad 41 can effectively reduce friction between the valve rod 20 and the pressure cap 40, so that the service life of the whole device can be prolonged.
Wherein, the upper end of antifriction pad 41 is the sawtooth structure, and the design of sawtooth structure makes antifriction pad 41 with laminate more between the pressure cap 40, thereby makes antifriction pad 41 not only can realize reducing friction, also can play sealed effect simultaneously, has improved its practicality effectively.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a gas cylinder bottle valve sealing device, its characterized in that, includes hand wheel, valve rod, valve body and presses the cap, the hand wheel and press the cap to install in proper order on the valve rod, press the cap set up in the hand wheel below, the outside threaded connection who presses the cap in the valve body, the valve body is equipped with inlet channel, gas outlet channel and valve pocket, the valve pocket communicates respectively inlet channel and gas outlet channel, the lower extreme of valve rod is equipped with piston assembly, piston assembly install in the valve pocket, and with valve body threaded connection, piston assembly and can form the valve that can open and shut between the valve body, be equipped with the seal groove on the valve rod, the seal groove set up in the lateral wall of valve rod, be equipped with the sealing washer in the seal groove, the sealing washer install in the seal groove.
2. A gas cylinder valve sealing device according to claim 1, characterized in that the inner side of the sealing ring abuts against the outer circumferential surface of the valve stem, and the outer side of the sealing ring is in sealing contact with the inner side wall of the valve body.
3. A gas cylinder valve sealing device according to claim 2, characterized in that the cross section of the sealing ring is a transverse convex structure.
4. A gas cylinder valve sealing device according to claim 3, characterized in that the upper and lower ends of the sealing ring are provided with retaining rings.
5. A gas cylinder valve sealing device according to claim 4, characterized in that an anti-friction gasket is arranged between the pressure cap and the valve stem, and the anti-friction gasket is arranged on the outer surface of the valve stem.
6. A gas cylinder valve sealing device according to claim 5, characterized in that the upper end of the anti-friction pad is of a sawtooth structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020516823.0U CN212718066U (en) | 2020-04-09 | 2020-04-09 | Gas cylinder valve sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020516823.0U CN212718066U (en) | 2020-04-09 | 2020-04-09 | Gas cylinder valve sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212718066U true CN212718066U (en) | 2021-03-16 |
Family
ID=74905556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020516823.0U Expired - Fee Related CN212718066U (en) | 2020-04-09 | 2020-04-09 | Gas cylinder valve sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212718066U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023279870A1 (en) * | 2021-07-05 | 2023-01-12 | 丹阳市飞轮气体阀门有限公司 | Pressure maintaining gas cylinder valve |
-
2020
- 2020-04-09 CN CN202020516823.0U patent/CN212718066U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023279870A1 (en) * | 2021-07-05 | 2023-01-12 | 丹阳市飞轮气体阀门有限公司 | Pressure maintaining gas cylinder valve |
| US12078251B2 (en) | 2021-07-05 | 2024-09-03 | Danyang Feilun Gas Valve Co., Ltd. | Pressure maintaining gas cylinder valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210316 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |