CN206530727U - A kind of hard seal ball valve seat with dustproof construction - Google Patents
A kind of hard seal ball valve seat with dustproof construction Download PDFInfo
- Publication number
- CN206530727U CN206530727U CN201621274674.1U CN201621274674U CN206530727U CN 206530727 U CN206530727 U CN 206530727U CN 201621274674 U CN201621274674 U CN 201621274674U CN 206530727 U CN206530727 U CN 206530727U
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- CN
- China
- Prior art keywords
- valve seat
- preloading spring
- sealing ring
- ball valve
- hard seal
- 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.)
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Abstract
A kind of hard seal ball valve seat with dustproof construction, including valve body, valve seat and preloading spring sealing structure between the two, the rear and front end of the preloading spring sealing structure are provided with flexible material sealing ring.The utility model sets twice flexible graphite sealing ring before and after preloading spring, prevents in medium dust at passage, enters preloading spring at lumen, causes preloading spring to fail, and valve seat loses pretightening unit sealing load, influences valve seal performance.Meanwhile, this twice flexible graphite sealing ring also ensure that the sealing reliability between valve seat and valve body.
Description
Technical field
The invention belongs to technical field of valve manufacturing, it is related to a kind of hard seal ball valve applied to high temperature medium containing dust and leads
Domain, refers specifically to a kind of hard seal ball valve seat with dustproof construction.
Background technology
Hard seal ball valve, which is commonly used in the media such as coking process HTHP system, coal chemical industry and coal water slurry gasification, to be contained
On the device for there are a large amount of dusts, because common hard seal ball valve is not provided with dustproof construction, substantial amounts of dust is caused to enter after valve seat
The preloading spring in face, causes preloading spring to fail, and directly affects the service life of hard seal ball valve, adds chemical enterprise
Production cost.
Utility model content
The utility model provides a kind of hard seal ball valve seat with dustproof construction, effectively prevents dust from entering pretension bullet
Spring, improves the service life of hard seal ball valve.
Technical solution adopted in the utility model is：
A kind of hard seal ball valve seat with dustproof construction, including valve body, valve seat and preloading spring between the two are close
Seal structure, the rear and front end of the preloading spring sealing structure is provided with flexible material sealing ring.
The utility model sets twice flexible graphite sealing ring before and after preloading spring, prevents in medium dust from passage
Enter preloading spring at place, lumen, cause preloading spring to fail, valve seat loses pretightening unit sealing load, influence valve seal performance.
Meanwhile, this twice flexible graphite sealing ring also ensure that the sealing reliability between valve seat and valve body.
The utility model reliably can prevent dust from entering preloading spring, hard seal ball valve is had in operating mode containing particle
Stable sealing property.
The utility model design structure is simple, processing step is few, can reduce Production in Chemical Plant cost.
Brief description of the drawings
Fig. 1 is the utility model structure sectional view.
Embodiment
The utility model is further described below in conjunction with the accompanying drawings.
Reference picture 1, a kind of hard seal ball valve seat with dustproof construction, including valve body 1, preceding flexible graphite sealing ring 2,
Front pressuring plate 3, preloading spring 4, spring base 5, rear fender 6, rear flexible graphite sealing ring 7, valve seat 8, spheroid 9.8 liang of valve body 1, valve seat
Preloading spring sealing structure is provided between person, it is：Its two ends is respectively and front pressuring plate after preloading spring 4 is arranged in spring base 5
3rd, rear fender 6 is contacted.And at flexible graphite sealing ring 2 before being set at the other end of front pressuring plate 3, the other end of rear fender 6
Flexible graphite sealing ring 7 after setting.
The course of work of the present utility model：
First by the preloading spring 4 in spring base 5 there is provided a pretightning force, promote before front pressuring plate 3, the compression of rear fender 6
Flexible graphite sealing ring 2, rear flexible graphite sealing ring 7, make preceding flexible graphite sealing ring 2, rear flexible graphite sealing ring 7 initial
Certain seal pressure can be kept under state.Preceding flexible graphite sealing ring 2, rear flexible graphite sealing ring 7 are able to prevent
Dust at passage, at lumen in medium enters preloading spring 4, preloading spring is failed, valve seat loses initial sealing force, shadow
Ring valve seal performance.
Claims (2)
1. a kind of hard seal ball valve seat with dustproof construction, including valve body, valve seat and preloading spring sealing between the two
Structure, it is characterised in that：The rear and front end of the preloading spring sealing structure is provided with flexible material sealing ring so that preloading spring
The pretightning force of offer makes flexible material sealing ring to keep certain seal pressure in an initial condition.
2. a kind of hard seal ball valve seat with dustproof construction according to claim 1, it is characterised in that：The flexibility
Material is graphite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621274674.1U CN206530727U (en) | 2016-11-25 | 2016-11-25 | A kind of hard seal ball valve seat with dustproof construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621274674.1U CN206530727U (en) | 2016-11-25 | 2016-11-25 | A kind of hard seal ball valve seat with dustproof construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206530727U true CN206530727U (en) | 2017-09-29 |
Family
ID=59921963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621274674.1U Active CN206530727U (en) | 2016-11-25 | 2016-11-25 | A kind of hard seal ball valve seat with dustproof construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206530727U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107559448A (en) * | 2017-10-18 | 2018-01-09 | 兰州高压阀门有限公司 | A kind of high-temperature wearable hard seal ball valve seat with dustproof construction |
-
2016
- 2016-11-25 CN CN201621274674.1U patent/CN206530727U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107559448A (en) * | 2017-10-18 | 2018-01-09 | 兰州高压阀门有限公司 | A kind of high-temperature wearable hard seal ball valve seat with dustproof construction |
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| GR01 | Patent grant |