CN204284639U - A kind of gas valve - Google Patents
A kind of gas valve Download PDFInfo
- Publication number
- CN204284639U CN204284639U CN201420669425.7U CN201420669425U CN204284639U CN 204284639 U CN204284639 U CN 204284639U CN 201420669425 U CN201420669425 U CN 201420669425U CN 204284639 U CN204284639 U CN 204284639U
- Authority
- CN
- China
- Prior art keywords
- seal ring
- valve body
- valve
- seal
- valve rod
- 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.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a kind of gas valve, this gas valve, for being arranged on gas cylinder, comprises valve body, valve rod and seal arrangement; Described valve rod stretches into described valve body from described body top, and described stem lower portion is provided with the first seal ring, the second seal ring and the first magnet from top to bottom successively; Described second seal ring is reverse frustoconic; Described seal arrangement comprises the 3rd seal ring and the 4th seal ring; The centre of described 3rd seal ring is provided with through hole, and described through hole is positioned at immediately below described valve rod; Described through hole top is the reverse frustoconic coordinated with described seal ring, and bottom is cylindrical; Described 4th seal ring is movably installed in below described 3rd seal ring by connecting rod; Described 4th seal ring is provided with the second magnet.The utility model is simple and reasonable, and tightness is good, low cost of manufacture, and it is convenient to change.
Description
Technical field
The utility model relates to a kind of valve, particularly relates to a kind of gas valve.
Background technique
Valve is the controlling component in fluid delivery system, has cut-off, adjustment, water conservancy diversion, prevents the functions such as adverse current, voltage stabilizing, shunting or overflow pressure relief.Valve, particularly gas valve are very high to sealing requirements.And there is the bad or susceptible to plugging problem of hermetic seal in current valve, and the high-accuracy valve complex structure that tightness is good, expensive.
Model utility content
Model utility object: the utility model, for solving the problem, provides the simple gas valve of the good structure of a kind of tightness.
Technological scheme: a kind of gas valve described in the utility model, is installed on gas cylinder, comprises valve body, valve rod and seal arrangement; Described valve body top is valve rod joint, is provided with the first internal thread be connected with described valve rod; Form sealed cavity in the middle part of described valve body, in described sealed cavity, described seal arrangement is installed; Described valve body lower portion is gas cylinder joint, is provided with the second internal thread be connected with gas cylinder; Described valve rod is provided with the outside thread with described first screw-internal thread fit, described valve rod stretches into described valve body from described body top, and described stem lower portion is provided with the first seal ring, the second seal ring and the first magnet from top to bottom successively; Described second seal ring is reverse frustoconic; Described seal arrangement comprises the 3rd seal ring and the 4th seal ring; The sealed cavity of described valve body is separated into upper and lower two cavitys by described 3rd seal ring; The centre of described 3rd seal ring is provided with through hole, and described through hole is positioned at immediately below described valve rod; Described through hole top is the reverse frustoconic coordinated with described second seal ring, and bottom is cylindrical; Described 4th seal ring is movably installed in below described 3rd seal ring by connecting rod; Described 4th seal ring is provided with the second magnet; Valve air outlet is positioned at the upper cavity of the sealed cavity of described valve body.
Further preferred version of the present utility model is, described first seal ring lower surface is provided with the first prominent circle of a circle ring, and the upper surface of described 3rd seal ring is provided with and prominently with described first encloses the first groove coordinated.
Further preferred version of the present utility model is, described 4th seal ring upper surface is provided with the second prominent circle of a circle ring, and the lower surface of described 3rd seal ring is provided with and prominently with described second encloses the second groove coordinated.
Further preferred version of the present utility model is, described first seal ring, described second seal ring, described 3rd seal ring and described 4th seal ring are that silicone rubber is made.
Further preferred version of the present utility model is that described stem surface is coated with one deck teflon.
Further preferred version of the present utility model is, the sealed cavity top of described valve body is provided with the 5th seal ring.
Beneficial effect: the utility model compared with prior art, its advantage is, the utility model tightness is good, three surface of contact contacted with the 3rd seal ring by the first seal ring, the second seal ring and the 4th seal ring are sealed, sealing effect is much better than the sealing effect of an existing valve sealing surface, first prominent circle and the second prominent circle increase the area of contact of sealing surface further simultaneously, further increase sealing effect of the present utility model.The utility model is simple and reasonable, and tightness is good, low cost of manufacture, and it is convenient to change.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, illustrate the utility model further.
Composition graphs 1, the utility model discloses a kind of gas valve, and this gas valve, for being arranged on gas cylinder, comprises valve body 1, valve rod 2 and seal arrangement; Described valve body 1 top is valve rod joint, is provided with the first internal thread 3 be connected with described valve rod; Form sealed cavity in the middle part of described valve body 1, in described sealed cavity, described seal arrangement is installed; Described valve body 1 bottom is gas cylinder joint, is provided with the second internal thread 4 be connected with gas cylinder; Described valve rod is provided with the outside thread 5 coordinated with described first internal thread 3, described valve rod 2 stretches into described valve body 1 from described valve body 1 top, and described valve rod 2 bottom is provided with the first seal ring 6, second seal ring 7 and the first magnet 8 from top to bottom successively; Described second seal ring 7 is in reverse frustoconic; Described seal arrangement comprises the 3rd seal ring 9 and the 4th seal ring 10; The sealed cavity of described valve body 1 is separated into upper and lower two cavitys by described 3rd seal ring 9; The centre of described 3rd seal ring 9 is provided with through hole 11, and described through hole 11 is positioned at immediately below described valve rod 2; Described through hole 11 top is the reverse frustoconic coordinated with described second seal ring 7, and bottom is cylindrical; Described 4th seal ring 10 is movably installed in below described 3rd seal ring 9 by connecting rod 12; Described 4th seal ring 10 is provided with the second magnet 13; Valve air outlet 14 is positioned at the upper cavity of the sealed cavity of described valve body 1.
Three surface of contact that the utility model contacts with the 3rd seal ring 9 mainly through the first seal ring 6, second seal ring 7 and the 4th seal ring 10 seal.Described first seal ring 6 is sheathed on described valve rod 1, and diameter is greater than the diameter of described through hole 11, contacts after described valve rod 2 moves downward with the upper surface of the 3rd seal ring 9; Second seal ring 7 is positioned at below the first seal ring 6, after described valve rod 2 moves downward, penetrates described through hole 11 with described valve rod 2, and seals with described through hole 11 wall contacts; 4th seal ring 10 is movably installed in below described 3rd seal ring 9 by connecting rod 12, and can move up and down along connecting rod 12, when described valve rod 2 moves downward, first magnet 8 of described valve rod 2 lower end is close to described second magnet 13 be positioned on the 4th seal ring 10, described second magnet 13 is under the attraction of described first magnet 8, and described 4th seal ring 10 moves upward along connecting rod 12 and contacts with the 3rd seal ring 9 and seals.
In order to improve tightness further, increase the area of contact of sealing contact surface, described first seal ring 6, described second seal ring 7, described 3rd seal ring 9 and described 4th seal ring 10 are made for silicone rubber.Described first seal ring 6 lower surface is provided with the first prominent circle 15 of a circle ring, and the upper surface of described 3rd seal ring 9 is provided with the first groove that circle 15 prominent with described first coordinates.Described 4th seal ring 10 upper surface is provided with the second prominent circle 16 of a circle ring, and the lower surface of described 3rd seal ring 9 is provided with the second groove that circle 16 prominent with described second coordinates.
In order to improve the tightness on valve body top further, described valve rod 2 surface is coated with one deck teflon; The sealed cavity top of described valve body 1 is provided with the 5th seal ring 17.
To be apparent for those skilled in the art to the multiple amendment of embodiment, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (6)
1. a gas valve, is installed on gas cylinder, it is characterized in that, comprises valve body, valve rod and seal arrangement; Described valve body top is valve rod joint, is provided with the first internal thread be connected with described valve rod; Form sealed cavity in the middle part of described valve body, in described sealed cavity, described seal arrangement is installed; Described valve body lower portion is gas cylinder joint, is provided with the second internal thread be connected with gas cylinder; Described valve rod is provided with the outside thread with described first screw-internal thread fit, described valve rod stretches into described valve body from described body top, and described stem lower portion is provided with the first seal ring, the second seal ring and the first magnet from top to bottom successively; Described second seal ring is reverse frustoconic; Described seal arrangement comprises the 3rd seal ring and the 4th seal ring; The sealed cavity of described valve body is separated into upper and lower two cavitys by described 3rd seal ring; The centre of described 3rd seal ring is provided with through hole, and described through hole is positioned at immediately below described valve rod; Described through hole top is the reverse frustoconic coordinated with described second seal ring, and bottom is cylindrical; Described 4th seal ring is movably installed in below described 3rd seal ring by connecting rod; Described 4th seal ring is provided with the second magnet; Valve air outlet is positioned at the upper cavity of the sealed cavity of described valve body.
2. gas valve according to claim 1, is characterized in that, described first seal ring lower surface is provided with the first prominent circle of a circle ring, and the upper surface of described 3rd seal ring is provided with and prominently with described first encloses the first groove coordinated.
3. gas valve according to claim 1, is characterized in that, described 4th seal ring upper surface is provided with the second prominent circle of a circle ring, and the lower surface of described 3rd seal ring is provided with and prominently with described second encloses the second groove coordinated.
4. gas valve according to claim 1, is characterized in that, described first seal ring, described second seal ring, described 3rd seal ring and described 4th seal ring are that silicone rubber is made.
5. gas valve according to claim 1, is characterized in that, described stem surface is coated with one deck teflon.
6. gas valve according to claim 1, is characterized in that, the sealed cavity top of described valve body is provided with the 5th seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420669425.7U CN204284639U (en) | 2014-11-11 | 2014-11-11 | A kind of gas valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420669425.7U CN204284639U (en) | 2014-11-11 | 2014-11-11 | A kind of gas valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204284639U true CN204284639U (en) | 2015-04-22 |
Family
ID=52867800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420669425.7U Expired - Fee Related CN204284639U (en) | 2014-11-11 | 2014-11-11 | A kind of gas valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204284639U (en) |
-
2014
- 2014-11-11 CN CN201420669425.7U patent/CN204284639U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150422 Termination date: 20171111 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |