CN202612828U - Valve rod sealing structure - Google Patents
Valve rod sealing structure Download PDFInfo
- Publication number
- CN202612828U CN202612828U CN 201220297963 CN201220297963U CN202612828U CN 202612828 U CN202612828 U CN 202612828U CN 201220297963 CN201220297963 CN 201220297963 CN 201220297963 U CN201220297963 U CN 201220297963U CN 202612828 U CN202612828 U CN 202612828U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve rod
- stuffing box
- valve gap
- box gland
- 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 - Lifetime
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Abstract
A valve rod sealing structure comprises a valve cover, a valve rod and a sealing device. The valve rod extends into the valve cover and is matched with the valve cover in sliding mode. The sealing device is disposed between the valve rod and the valve cover. The sealing device comprises a seal sleeve. A U-shaped seal ring is arranged among the upper end of the seal sleeve, the lower end of the seal sleeve and the valve cover. First O-shaped seal rings are disposed in grooves of the U-shaped seal rings. A set of second O-shaped seal rings is are arranged between the inner wall of the seal sleeve and the valve rod. A set of third O-shaped seal rings is arranged between the outer wall of the seal sleeve and the valve cover. A groove body is disposed on the seal sleeve. Pulpy fillers are filled in the groove body. A grease injection valve communicated with the groove body is disposed outside the valve cover. The valve rod sealing structure is provided with multiple sealing structures, guarantees the pulpy fillers to be sufficient through the grease injection valve, has self-adjusting ability, ensures long-term good sealing performance between the valve rod and the valve cover, and greatly decreases lifting friction of the valve rod of the valve.
Description
Technical field
The utility model relates to a kind of valve, especially a kind of sealing configuration of valve rod.
Background technique
The application of valve very extensively; Wherein the valve rod on the valve extend into from valve gap in the valve body, will keep good sealing property between valve rod and the valve gap, owing to often want relative movement between valve rod and the valve gap; Use the back or disturbed by factors such as extraneous collision, vibrations permanent; Cause the sealing between valve gap and the valve rod impaired easily, make the leakage of liquid in the valve body, so sealing is extremely important between valve gap and the valve rod.
Summary of the invention
The utility model will solve the shortcoming of above-mentioned existing technology, and a kind of sealing configuration of valve rod is provided, and is provided with multi-sealing structure, and has self-regulating function, strengthens sealing.
The utility model solves the technological scheme that its technical problem adopts: the sealing configuration of this valve rod; Comprise valve gap; Stretch in the valve gap and with valve gap and be the valve rod that is slidingly matched, be provided with seal arrangement between valve rod and the valve gap, seal arrangement comprises stuffing box gland; Be provided with the U-shaped seal ring between the two ends up and down of stuffing box gland and the valve gap, be provided with O-ring seals one in the groove of U-shaped seal ring; Wherein be provided with one group of O-ring seals two between the inwall of stuffing box gland and the valve rod, be provided with one group of O-ring seals three on the outer wall of stuffing box gland and between the valve gap; Wherein stuffing box gland is provided with cell body, and muddy packing is housed in the cell body, and valve gap is provided with the grease pouring valve identical with cell body outward.This structure is multi-sealed through O-ring seals, U-shaped seal ring and muddy packing; Guarantee the sealing between valve rod and the valve gap;, the amount of muddy packing can inject after reducing through outside grease pouring valve; Further guarantee sealing, the sealing of this valve rod does not need to regulate, and significantly reduces the friction that valve rod goes up and down.
Wherein O-ring seals two, O-ring seals three are located at the top and the bottom of stuffing box gland respectively, and the cell body that muddy packing is housed is located at the intermediate portion of stuffing box gland.This structure at first is that O-ring seals adds the U-shaped seal ring, under the situation that sealing is decreased, can seal through the filler that muddy packing remedies damage.
The effect that the utility model is useful is: the utility model design multi-sealing structure; Guarantee the abundance of muddy packing through grease pouring valve; Have capacity of self-regulation, guarantee to make to have long-term good sealing property between valve rod and the valve gap, significantly reduce the friction that valve rod goes up and down.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Description of reference numerals: valve gap 1, O-ring seals 1, U-shaped seal ring 3, O-ring seals 34 stuffing box glands 5, cell body 5-1, muddy packing 6, O-ring seals 27, bolt 8, support 9, grease pouring valve 10, valve rod 11.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further:
With reference to accompanying drawing: the sealing configuration of this valve rod; Comprise valve gap 1; Stretch in the valve gap 1 and with valve gap 1 and be the valve rod 11 that is slidingly matched, be provided with seal arrangement between valve rod 11 and the valve gap 1, seal arrangement comprises stuffing box gland 5; Be provided with U-shaped seal ring 3 between the two ends up and down of stuffing box gland 5 and the valve gap 1, be provided with O-ring seals 1 in the groove of U-shaped seal ring 3; Wherein be provided with one group of O-ring seals 27 between the inwall of stuffing box gland 5 and the valve rod 11, be provided with one group of O-ring seals 34 on the outer wall of stuffing box gland 5 and between the valve gap 1; Wherein stuffing box gland 5 is provided with cell body 5-1, and muddy packing 6 is housed in the cell body 5-1, the valve gap 1 outer grease pouring valve 10 that communicates with cell body 5-1 that is provided with.Wherein O-ring seals 27, O-ring seals 34 are located at the top and the bottom of stuffing box gland 5 respectively, and the cell body 5-1 that muddy packing 6 is housed is located at the intermediate portion of stuffing box gland 5.
The top of valve gap is connected with support 9 through bolt 8; Design multi-sealing structure between valve gap 1 and the valve rod 11; And be provided with the sealing configuration of muddy packing 6, the abundance through grease pouring valve 10 assurance muddy packings 6 has capacity of self-regulation; Assurance makes between valve rod 11 and the valve gap 1 has long-term good sealing property, significantly reduces the friction that valve rod goes up and down.
Though the utility model is through illustrating and describe with reference to preferred embodiment,, those skilled in the art should understand, and in the scope of claims, can do the various variation on form and the details.
Claims (2)
1. the sealing configuration of a valve rod; Comprise valve gap (1); Stretch in the valve gap (1) and with valve gap (1) and be the valve rod (11) that is slidingly matched, be provided with seal arrangement between valve rod (11) and the valve gap (1), it is characterized in that: said seal arrangement comprises stuffing box gland (5); Be provided with U-shaped seal ring (3) between the two ends up and down of stuffing box gland (5) and the valve gap (1), be provided with O-ring seals one (2) in the groove of U-shaped seal ring (3); Be provided with one group of O-ring seals two (7) between the inwall of said stuffing box gland (5) and the valve rod (11), be provided with one group of O-ring seals three (4) on the outer wall of stuffing box gland (5) and between the valve gap (1); Said stuffing box gland (5) is provided with cell body (5-1), and muddy packing (6) is housed in the cell body (5-1), the outer grease pouring valve (10) that communicates with cell body (5-1) that is provided with of valve gap (1).
2. the sealing configuration of valve rod according to claim 1; It is characterized in that: said O-ring seals two (7), O-ring seals three (4) are located at the top and the bottom of stuffing box gland (5) respectively, and the cell body (5-1) that muddy packing (6) are housed is located at the intermediate portion of stuffing box gland (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220297963 CN202612828U (en) | 2012-06-25 | 2012-06-25 | Valve rod sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220297963 CN202612828U (en) | 2012-06-25 | 2012-06-25 | Valve rod sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202612828U true CN202612828U (en) | 2012-12-19 |
Family
ID=47346528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220297963 Expired - Lifetime CN202612828U (en) | 2012-06-25 | 2012-06-25 | Valve rod sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202612828U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103759067A (en) * | 2014-01-22 | 2014-04-30 | 大连大高阀门股份有限公司 | LNG multi-seal structure capable of guaranteeing zero leakage at position of valve rod under ultra-low temperature working condition |
| CN108662170A (en) * | 2018-07-12 | 2018-10-16 | 宣达实业集团有限公司 | Slurry special service valve |
-
2012
- 2012-06-25 CN CN 201220297963 patent/CN202612828U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103759067A (en) * | 2014-01-22 | 2014-04-30 | 大连大高阀门股份有限公司 | LNG multi-seal structure capable of guaranteeing zero leakage at position of valve rod under ultra-low temperature working condition |
| CN108662170A (en) * | 2018-07-12 | 2018-10-16 | 宣达实业集团有限公司 | Slurry special service valve |
| CN108662170B (en) * | 2018-07-12 | 2021-05-07 | 宣达实业集团有限公司 | Special valve for slurry |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121219 |
|
| CX01 | Expiry of patent term |