CN202955274U - Improved seal structure of ball valve - Google Patents
Improved seal structure of ball valve Download PDFInfo
- Publication number
- CN202955274U CN202955274U CN 201220680095 CN201220680095U CN202955274U CN 202955274 U CN202955274 U CN 202955274U CN 201220680095 CN201220680095 CN 201220680095 CN 201220680095 U CN201220680095 U CN 201220680095U CN 202955274 U CN202955274 U CN 202955274U
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- seal ring
- valve body
- elastic component
- valve
- seal
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Abstract
The utility model provides an improved seal structure of a ball valve, belonging to the technical field of ball valves and solving the technical problems that the seal structures of the existing ball valves have short service lives and poor sealing effects. The ball valve comprises a valve body and a valve plug arranged in the valve body. The seal structure comprises a seal ring, wherein the seal ring is arranged between the valve body and the valve plug; one end face of the seal ring can abut against the valve plug; an elastic member which is in a state of compression and can enable the seal ring to tend to move toward the valve plug is arranged between the seal ring and the valve body; the hardness of the elastic member is smaller than that of the seal ring; a ring-shaped notch is formed on the seal ring; the elastic member is sleeve-connected in the ring-shaped notch and can abut against the valve body; and the elastic member has a circular cross section, is arranged in the ring-shaped notch of the seal ring and can abut against the inner wall of the ring-shaped notch of the seal ring. The improved seal structure has the advantages of long service life, good sealing effect and the like.
Description
Technical field
The utility model belongs to the ball valve technical field, relates to the improved seal structure of a kind of ball valve, particularly a kind of ball valve.
Background technique
In the relevant device of the current draining in industry and agriculture use and liquid control system, because ball valve has, switch is rapid, easy to operate, fluid resistance is little, advantages of simple structure and simple is widely adopted.Ball valve is developed by stopcock, and its open-shut device, as a ball valve core, utilizes spool to realize the purpose of opening and closing around the axis 90-degree rotation of valve rod.
Because the spool in ball valve roughly is autumn clothing, thereby when work, the seal ring of spool outer circumferential face and valve seat interior surface keeps sealing state, at present all the problem of sealing variation appears in the ball valve that exists in various degree after long-time the use, in order to address the above problem, people improve seal ring, the disclosed a kind of composite seal element for ball valve of Chinese patent literature [authorize publication number CN2512961Y] for example, to be undertaken by silicone rubber O-ring seals and polytetrafluoro ball face sealing circle that machinery is compound to be formed, material by two different hardness in conjunction with the characteristic that changes seal element, increase the working life of seal element.But after long-time the use, after seal ring and spool wearing and tearing, abrasion loss measures less than compensation, makes the sealing variation of seal ring and spool.
Summary of the invention
The purpose of this utility model is to have the problems referred to above for existing technology, has proposed a kind of improved seal structure of ball valve, and it is stable that the sealing structure has sealing effect, the characteristics of long service life.
The purpose of this utility model can realize by following technical proposal: a kind of improved seal structure of ball valve, described ball valve comprises valve body and is arranged on the spool in valve body, it is characterized in that, this sealing configuration comprises seal ring, described seal ring is arranged between valve body and spool, described seal ring one end face can lean with described spool, be provided with in compressive state between seal ring and valve body and can make seal ring have the elastic component towards valve core movement trend, the hardness of described elastic component is less than seal ring hardness; Offer annular annular breach on described seal ring, described elastic component is socketed in this annular breach, and described elastic component can lean with above-mentioned valve body; The cross section of described elastic component is rounded, and this elastic component is arranged on the annular indentation, there of seal ring, and can lean with the inwall of seal ring annular breach.
Offer some passages in valve body, spool is arranged on the intersection of passage, and ball valve also comprises valve rod, and valve rod is arranged on valve body and is connected to control the rotation of spool with spool, drives valve core rotation by rotation valve rod and realizes opening or closing of valve; Because the hardness of elastic component is less than the hardness of seal ring, when being subject to the spool extruding, seal ring make the elasticity of seal ring increase, increase the working life of seal ring; During installation, elastic component is compressed packs between valve body and spool, and after long-term the use, the wearing and tearing that seal ring can be subject to spool make the sealing of seal ring reduce, elastic component can be expanded the wear extent of compensation sealing circle, makes seal ring and spool can keep good sealing state all the time.
In the improved seal structure of above-mentioned ball valve, described seal ring adopts polytetrafluoroethylmaterial material to make.Teflon is all inertia to nearly all chemical substance, and has that friction factor is little, stable performance, is difficult for comprehensive feature aging, that temperature applicable range is wide and sealability is good.
In the improved seal structure of above-mentioned ball valve, the material of described elastic component is rubber.The relative teflon of the hardness of rubber wants little and rubber elasticity good.
Compared with prior art, the improved seal structure of this ball valve has the following advantages:
1, the hardness of the hardness ratio seal ring of elastic component is little, has increased the elasticity of seal ring, has reduced the wear extent that seal ring is subject to, and has increased the working life of seal ring.
2, be provided with the elastic component in compressive state with crossing between seal ring and valve body, after ring wear, elastic component is expanded the compensate for wear amount, has improved the sealing stability of seal ring.
The accompanying drawing explanation
Fig. 1 is one li of embodiment's ball valve and the structural representation of this sealing configuration.
Fig. 2 is the local enlarged diagram at A place in Fig. 1.
Fig. 3 is the seal ring at A place in Fig. 1 and the location diagram that valve body is installed.
In figure, 11a, valve body; 11b, passage; 12, spool; 13, valve rod; 14a, seal ring; 14d, annular breach; 15, elastic component.
Embodiment
Be below specific embodiment of the utility model by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As shown in Figure 1, Figure 2 and Figure 3, a kind of improved seal structure of ball valve, described ball valve comprises valve body 11a and is arranged on the spool 12 in valve body 11a, it is characterized in that, this sealing configuration comprises seal ring 14a, described seal ring 14a is arranged between valve body 11a and spool 12, described seal ring 14a mono-end face can lean with described spool 12, be provided with in compressive state between seal ring 14a and valve body 11a and can make seal ring 14a have the elastic component 15 towards spool 12 movement tendencies, the hardness of described elastic component 15 is less than seal ring 14a hardness; Offer annular annular breach 14d on described seal ring 14a, described elastic component 15 is socketed in this annular breach 14d, and described elastic component 15 can lean with above-mentioned valve body 11a; The cross section of described elastic component 15 is rounded, and this elastic component 15 is arranged on the annular breach 14d place of seal ring 14a, and can lean with the inwall of seal ring 14a annular breach 14d.
In the improved seal structure of above-mentioned ball valve, described seal ring 14a adopts polytetrafluoroethylmaterial material to make.Teflon is all inertia to nearly all chemical substance, and has that friction factor is little, stable performance, is difficult for comprehensive feature aging, that temperature applicable range is wide and sealability is good.In the improved seal structure of above-mentioned ball valve, the material of described elastic component 15 is rubber.The relative teflon of the hardness of rubber wants little and rubber elasticity good.
Offer some passage 11b in valve body 11a, spool 12 is arranged on the intersection of passage 11b, ball valve also comprises valve rod 13, it is upper and be connected to control the rotation of spool 12 with spool 12 that valve rod 13 is arranged on valve body 11a, by rotation valve rod 13, with movable valve plug 12, rotates and realize opening or closing of valve; Because the hardness of elastic component 15 is less than the hardness of seal ring 14a, when being subject to spool 12 extruding, seal ring 14a make the elasticity of seal ring 14a increase, increase the working life of seal ring 14a; During installation, elastic component 15 is compressed packs between valve body 11a and spool 12, after long-term the use, the wearing and tearing that seal ring 14a can be subject to spool 12 make the sealing of seal ring 14a reduce, elastic component 15 can be expanded the wear extent of compensation sealing circle 14a, makes seal ring 14a and spool 12 can keep all the time good sealing state.
Claims (3)
1. the improved seal structure of a ball valve, described ball valve comprises valve body and is arranged on the spool in valve body, it is characterized in that, this sealing configuration comprises seal ring, described seal ring is arranged between valve body and spool, described seal ring one end face can lean with described spool, is provided with in compressive state between seal ring and valve body and can makes seal ring have the elastic component towards valve core movement trend, and the hardness of described elastic component is less than seal ring hardness; Offer annular annular breach on described seal ring, described elastic component is socketed in this annular breach, and described elastic component can lean with above-mentioned valve body; The cross section of described elastic component is rounded, and this elastic component is arranged on the annular indentation, there of seal ring, and can lean with the inwall of seal ring annular breach.
2. the improved seal structure of ball valve according to claim 1, is characterized in that, described seal ring adopts polytetrafluoroethylmaterial material to make.
3. the improved seal structure of ball valve according to claim 1, is characterized in that, the material of described elastic component is rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220680095 CN202955274U (en) | 2012-11-27 | 2012-11-27 | Improved seal structure of ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220680095 CN202955274U (en) | 2012-11-27 | 2012-11-27 | Improved seal structure of ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202955274U true CN202955274U (en) | 2013-05-29 |
Family
ID=48460846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220680095 Expired - Fee Related CN202955274U (en) | 2012-11-27 | 2012-11-27 | Improved seal structure of ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202955274U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090287A (en) * | 2016-08-23 | 2016-11-09 | 成都欧浦特控制阀门有限公司 | The pneumatic ball valve that a kind of reliability is high |
| CN106090286A (en) * | 2016-08-23 | 2016-11-09 | 成都欧浦特控制阀门有限公司 | A kind of ball valve of good leak tightness |
-
2012
- 2012-11-27 CN CN 201220680095 patent/CN202955274U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090287A (en) * | 2016-08-23 | 2016-11-09 | 成都欧浦特控制阀门有限公司 | The pneumatic ball valve that a kind of reliability is high |
| CN106090286A (en) * | 2016-08-23 | 2016-11-09 | 成都欧浦特控制阀门有限公司 | A kind of ball valve of good leak tightness |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130529 Termination date: 20131127 |