CN205371794U - Valve rod combined packing that flexible graphite ring sum has this flexible graphite ring is sealed - Google Patents
Valve rod combined packing that flexible graphite ring sum has this flexible graphite ring is sealed Download PDFInfo
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- CN205371794U CN205371794U CN201620027368.1U CN201620027368U CN205371794U CN 205371794 U CN205371794 U CN 205371794U CN 201620027368 U CN201620027368 U CN 201620027368U CN 205371794 U CN205371794 U CN 205371794U
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- ring
- soft graphite
- graphite ring
- flexible graphite
- female
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Abstract
The utility model discloses a flexible graphite ring, ring and outer ring in containing on the flexible graphite ring, have the middle part ring between interior ring and the outer ring, have the sunk part on the circumference position of middle part ring, and the sunk part forms the calendering groove. The utility model discloses the calendering groove can make flexible graphite ring furthest's production calendering warp, and then makes the flexible graphite ring hug closely (sealed face is sealed and is leaked the passageway) to reach the effect of sealed zero leakage, when putting into production, because winding raw and other materials graphite paper's distribution is even in the mould, which partial thickness of the flexible graphite ring of extrusion is more little then density is big more in the mould, and the middle part ring circumference thickness of middle part ring circumference utensil notched flexible graphite ring obviously is lighter than outer fringe thickness, so the density of flexible graphite ring outer fringe is lighter than the density at middle part, and then makes flexible graphite intra -annular ring position possess better calendering and sealed effect with outer ring position.
Description
Technical field
This utility model relates to valve stem seal technical field, specifically a kind of soft graphite ring and the valve-rod combination packing seal with this soft graphite ring.
Background technology
Valve rod special combination packing seal, the problem mainly solving the low loss of valve rod zero leakage of valve, former product is low leakage, namely has certain leakage, but high loss.Because environmental requirement now is more and more higher, the zero leakage for valve requires and low loss requires more and more higher, it is necessary to reach the standard of API622 and the standard of ISO15848-1.
In prior art, sealing the standard of the extremely difficult standard reaching API622 of structure and ISO15848-1, the subject matter existed is that soft graphite ring rolling effect is poor, does not reach the calendering sealing effectiveness of the best.
It is accordingly required in particular to a kind of soft graphite ring and the valve-rod combination packing seal with this soft graphite ring, to solve problems of the prior art.
Utility model content
The purpose of this utility model is to solve in prior art, soft graphite ring rolling effect is poor, do not reach the defect of best rolling effect, it is provided that a kind of soft graphite ring and the valve-rod combination packing seal with this soft graphite ring, solve problems of the prior art.
For achieving the above object, the technical solution of the utility model is as follows:
A kind of soft graphite ring, including soft graphite ring, described soft graphite ring comprises inner collar and external toroidal ring, on described soft graphite ring, there is between inner collar and external toroidal ring middle part ring, on described soft graphite ring, the circumferential position of middle part ring having female, described female forms calendering groove.
In this utility model, on described soft graphite ring, soft graphite ring comprises upper and lower end, and the upper and lower end of described soft graphite ring is respectively provided with female.
In this utility model, the female of described upper end and the female of bottom are symmetrical arranged.
A kind of valve-rod combination packing seal with soft graphite ring, including housing, valve rod, soft graphite ring, upper press ring and lower pressure ring, in described housing, valve rod is set, sheathed soft graphite ring on described valve rod, upper press ring and lower pressure ring, on described valve rod, soft graphite is pressed in housing by upper press ring and lower pressure ring, described soft graphite ring comprises inner collar and external toroidal ring, on described soft graphite ring, there is between inner collar and external toroidal ring middle part ring, on described soft graphite ring, the circumferential position of middle part ring has female, described female forms calendering groove.
In this utility model, the quantity of described soft graphite ring is two or more.
In this utility model, on described soft graphite ring, soft graphite ring comprises upper and lower end, and the upper and lower end of described soft graphite ring is respectively provided with female.
In this utility model, the female of described upper end and the female of bottom are symmetrical arranged.
Beneficial effect
1, this utility model arranges female on the circumferential position of ring in the middle part of soft graphite ring, female forms calendering groove, when adopting this utility model soft graphite ring to carry out pressure ring sealing, calendering groove can make soft graphite ring produce calendering deformation to greatest extent, and then make soft graphite ring be close to by sealer, to reach to seal the effect of zero leakage；
2, further, (soft graphite ring is when producing for production principle according to soft graphite ring, first uniform winding graphite paper in mould, then the soft graphite ring of finished product is gone out at mould inner pressure), the distribution of the raw material graphite paper owing to being wound around in mould is uniform, the more little then density of which segment thickness of the soft graphite ring gone out at mould inner pressure is more big, middle part ring circumference has the middle part ring circumferential thickness of reeded soft graphite ring and is significantly less than outer edge thickness, therefore the density of soft graphite ring outer rim is less than the density at middle part, and then make soft graphite ring inner collar position and external toroidal ring position possess better calendering and sealing effectiveness (in ensureing prior art while soft graphite ring steadiness, flexibility is made to possess higher flexible rolling effect)；
3, further, it is dumb-bell shape that the above-mentioned female of soft graphite ring upper end and the depression of bottom are symmetrical arranged the axial section shape making half soft graphite ring, reaches good result of use.
Accompanying drawing explanation
The structural representation of Fig. 1 this utility model soft graphite ring；
Fig. 2 is the A-A sectional view of Fig. 1；
The valve-rod combination gland sealed structural representation of Fig. 3 this utility model soft graphite ring；
Fig. 4 is the use state reference map of Fig. 3；
The sectional view of shaft section during Fig. 5 this utility model soft graphite ring employing bowl structure；
Fig. 6 this utility model soft graphite ring adopts structural representation when passing through mould molding during bowl structure.
In figure: 1, soft graphite ring；11, inner collar；12, external toroidal ring；13, middle part ring；14, female；15, upper end；16, bottom；2, housing；3, valve rod；4, upper press ring；5, lower pressure ring；6, mould.
Detailed description of the invention
In the view of whole accompanying drawings, corresponding reference marks represents corresponding parts.
A kind of soft graphite ring 1, comprises inner collar 11 and external toroidal ring 12, on soft graphite ring 1, there is between inner collar 11 and external toroidal ring 12 middle part ring 13, on soft graphite ring 1, the circumferential position of middle part ring 13 having female 14, female 14 forms calendering groove.
On soft graphite ring 1, soft graphite ring 1 comprises upper end 15 and bottom 16, and upper end 15 and the bottom 16 of soft graphite ring 1 are respectively provided with female 14；In preferred embodiment, the female 14 of upper end 15 and the female 14 of bottom 16 are symmetrical arranged.
A kind of valve rod 3 combined stuffing with soft graphite ring seals, including housing 2, valve rod 3, soft graphite ring 1, upper press ring 4 and lower pressure ring 5.
Valve rod 3 is set in housing 2, sheathed soft graphite ring 1, upper press ring 4 and lower pressure ring 5 on valve rod 3, on valve rod 3, soft graphite is pressed in housing 2 by upper press ring 4 and lower pressure ring 5, and soft graphite ring 1 comprises inner collar 11 and external toroidal ring 12, on soft graphite ring 1, there is between inner collar 11 and external toroidal ring 12 middle part ring 13, on soft graphite ring 1, the circumferential position of middle part ring 13 having female 14, female 14 forms calendering groove.
In preferred embodiment, the quantity of soft graphite ring 1 is two or more；On soft graphite ring 1, soft graphite ring 1 comprises upper end 15 and bottom 16, and upper end 15 and the bottom 16 of soft graphite ring 1 are respectively provided with female 14；The female 14 of upper end 15 and the female 14 of bottom 16 are symmetrical arranged.
The flexibility calendering space that this utility model is bigger owing to the inner collar 11 of soft graphite ring 1 and external toroidal ring 12 have, has better sealing property, it is achieved also realizing under the premise of zero leakage can the effect that uses of many second compression.
This utility model is when in use: female 14 forms calendering groove, when adopting this utility model soft graphite ring 1 to carry out pressure ring sealing, calendering groove can make soft graphite ring 1 produce calendering deformation to greatest extent, and then make soft graphite ring 1 be close to by sealer, to reach to seal the effect of zero leakage；Further, (soft graphite ring 1 is when producing for production principle according to soft graphite ring 1, first uniform winding graphite paper in mould, then the soft graphite ring 1 of finished product is gone out at mould inner pressure), the distribution of the raw material graphite paper owing to being wound around in mould is uniform, which segment thickness of the soft graphite ring 1 gone out at mould inner pressure is more little then gather more big, middle part ring circumference has the middle part ring circumferential thickness of reeded soft graphite ring 1 and is significantly less than outer edge thickness, therefore the density of soft graphite ring 1 outer rim is less than the density at middle part, and then make soft graphite ring 1 inner collar 11 position and external toroidal ring 12 position possess better calendering and sealing effectiveness (in ensureing prior art while soft graphite ring 1 steadiness, flexibility is made to possess higher flexible rolling effect).
Referring to Fig. 5, as the embodiment that this utility model is replaced, soft graphite ring 1 can adopt the structures such as bowl-shape, also the structure with calendering groove can be formed, but the structure for example with bowl dress, graphite annulus is after by mould 6 molding, graphite annulus is positioned at first thickness A, the second thickness B more than inner collar 11 and external toroidal ring 12 position of middle part ring 13 part, and then make soft graphite ring 1 be positioned at the density density less than inner collar 11 and external toroidal ring 12 position of middle part ring 13 part, and then make calendering space nevertheless suffer from restriction, do not reach the result of use of the best.
The above-mentioned description to embodiment is to be understood that for ease of those skilled in the art and use this utility model.These embodiments obviously easily can be made various amendment by person skilled in the art, and General Principle described herein is applied in other embodiments without through performing creative labour.Therefore, this utility model is not limited to above-described embodiment, and those skilled in the art should within protection domain of the present utility model according to announcement of the present utility model, the improvement made without departing from this utility model category and amendment.
Claims (7)
1. a soft graphite ring, including soft graphite ring, described soft graphite ring comprises inner collar and external toroidal ring, on described soft graphite ring, there is between inner collar and external toroidal ring middle part ring, it is characterized in that: on described soft graphite ring, the circumferential position of middle part ring has female, described female forms calendering groove.
2. soft graphite ring according to claim 1, it is characterised in that: on described soft graphite ring, soft graphite ring comprises upper and lower end, and the upper and lower end of described soft graphite ring is respectively provided with female.
3. soft graphite ring according to claim 2, it is characterised in that: the female of the female and bottom of implementing upper end is symmetrical arranged.
4. a valve-rod combination packing seal with soft graphite ring, including housing, valve rod, soft graphite ring, upper press ring and lower pressure ring, in described housing, valve rod is set, sheathed soft graphite ring on described valve rod, upper press ring and lower pressure ring, on described valve rod, soft graphite is pressed in housing by upper press ring and lower pressure ring, described soft graphite ring comprises inner collar and external toroidal ring, on described soft graphite ring, there is between inner collar and external toroidal ring middle part ring, it is characterized in that: on described soft graphite ring, the circumferential position of middle part ring has female, described female forms calendering groove.
5. the valve-rod combination packing seal with soft graphite ring according to claim 4, it is characterised in that: the quantity of described soft graphite ring is two or more.
6. the valve-rod combination packing seal with soft graphite ring according to claim 4, it is characterized in that: on described soft graphite ring, soft graphite ring comprises upper and lower end, and the upper and lower end of described soft graphite ring is respectively provided with female.
7. the valve-rod combination packing seal with soft graphite ring according to claim 6, it is characterised in that: the female of described upper end and the female of bottom are symmetrical arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620027368.1U CN205371794U (en) | 2016-01-12 | 2016-01-12 | Valve rod combined packing that flexible graphite ring sum has this flexible graphite ring is sealed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620027368.1U CN205371794U (en) | 2016-01-12 | 2016-01-12 | Valve rod combined packing that flexible graphite ring sum has this flexible graphite ring is sealed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205371794U true CN205371794U (en) | 2016-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620027368.1U Active CN205371794U (en) | 2016-01-12 | 2016-01-12 | Valve rod combined packing that flexible graphite ring sum has this flexible graphite ring is sealed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205371794U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061855A (en) * | 2017-05-17 | 2017-08-18 | 南通艾迈特机械有限公司 | A kind of valve output shaft seal structure |
| CN111006065A (en) * | 2019-12-25 | 2020-04-14 | 湖南致航精密制造有限公司 | Two-way sealing ring and sealing device |
-
2016
- 2016-01-12 CN CN201620027368.1U patent/CN205371794U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061855A (en) * | 2017-05-17 | 2017-08-18 | 南通艾迈特机械有限公司 | A kind of valve output shaft seal structure |
| CN111006065A (en) * | 2019-12-25 | 2020-04-14 | 湖南致航精密制造有限公司 | Two-way sealing ring and sealing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 510000 the first floor of Gongshang, Zhongjin and Xiagang community Bund, Dongzhou village, Xintang Town, Zengcheng, Guangzhou, Guangdong Province Patentee after: Guangzhou anzhuo Sealing Technology Co.,Ltd. Address before: 510000 the first floor of Gongshang, Zhongjin and Xiagang community Bund, Dongzhou village, Xintang Town, Zengcheng, Guangzhou, Guangdong Province Patentee before: GUANGZHOU ANZOR MACHINERY TECHNOLOGY CO.,LTD. |