CN203670884U - Hard seal ball valve with trapezoid graphite seal rings - Google Patents
Hard seal ball valve with trapezoid graphite seal rings Download PDFInfo
- Publication number
- CN203670884U CN203670884U CN201320871245.2U CN201320871245U CN203670884U CN 203670884 U CN203670884 U CN 203670884U CN 201320871245 U CN201320871245 U CN 201320871245U CN 203670884 U CN203670884 U CN 203670884U
- Authority
- CN
- China
- Prior art keywords
- ring
- valve seat
- seal ring
- valve
- carbon 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.)
- Expired - Fee Related
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 52
- 229910002804 graphite Inorganic materials 0.000 title abstract description 15
- 239000010439 graphite Substances 0.000 title abstract description 15
- 239000000945 filler Substances 0.000 claims abstract description 17
- 230000006835 compression Effects 0.000 claims abstract description 9
- 238000007906 compression Methods 0.000 claims abstract description 9
- 229910052799 carbon Inorganic materials 0.000 claims description 37
- 238000012856 packing Methods 0.000 claims description 29
- 238000009434 installation Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 abstract description 9
- 238000006073 displacement reaction Methods 0.000 abstract description 4
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 240000004859 Gamochaeta purpurea Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Taps Or Cocks (AREA)
- Sealing Devices (AREA)
Abstract
The utility model discloses a hard seal ball valve with trapezoid graphite seal rings. The hard seal ball valve comprises a valve body, a valve seat and a valve element, wherein the valve body, the valve seat and the valve element are assembled together. Sealing filler is arranged between the valve element and the valve seat. The first trapezoid graphite seal ring, a filler backing ring and the second trapezoid graphite seal ring are arranged between the valve body and the valve seat, and an inclined ring surface matched with the first trapezoid graphite seal ring is arranged on the valve seat; the second trapezoid graphite seal ring is opposite to the first trapezoid graphite seal ring, the second trapezoid graphite seal ring is provided with a filler compression ring in a matching mode, and an inclined ring surface matched with the second trapezoid graphite seal ring is arranged on the filler compressing ring; the end face, far away from the valve seat, of the filler compression ring is provided with a compression spring in a matching mode. According to the hard seal ball valve with the trapezoid graphite seal rings, the influences of displacement of the valve seat are small, and sealing can be realized without a large amount of compression.
Description
Technical field
The utility model relates to the hard seal ball valve with trapezoidal carbon seal ring.
Background technique
Hard seal ball valve need to bear high temperature because of it, so cannot bear the seal request under worst hot case at valve base sealing place General Purpose Rubber, need to consider exotic material, as graphite.And conventional graphite packing cross section rectangle or square is often commonly used in valve stem seal place, guarantee sealing by controlling certain decrement (being generally 25%).And because valve seat can produce displacement through the sealing direction of being everlasting, so use this kind of filler can cause the problems such as the unstable and seal pressure of decrement is inadequate.
Model utility content
The purpose of this utility model is to provide a kind of hard seal ball valve with trapezoidal carbon seal ring, and it adopts and is subject to valve seat Influence of Displacement little, does not need larger decrement just can realize sealing.
For achieving the above object, the technical solution of the utility model is a kind of hard seal ball valve with trapezoidal carbon seal ring of design, comprises the valve body, valve seat and the spool that are assembled together;
Described spool and valve base chamber are provided with stuffing box packing, and described valve seat is provided with stuffing box packing mounting groove on the surface of contact of itself and spool, and described stuffing box packing is arranged in stuffing box packing mounting groove;
Described valve body and valve base chamber are provided with the first trapezoidal carbon seal ring, filler gasket ring and the second trapezoidal carbon seal ring, described the first trapezoidal carbon seal ring, filler gasket ring and the second trapezoidal carbon seal ring are axially enclosed within valve seat periphery successively along valve seat, and described valve seat is provided with the oblique anchor ring matching with the first trapezoidal carbon seal ring;
Described the second trapezoidal carbon seal ring and the first trapezoidal carbon seal ring are opposing, and described the second trapezoidal carbon seal ring is furnished with packing press ring, and described packing press ring is provided with the oblique anchor ring matching with the second trapezoidal carbon seal ring;
Described packing press ring is furnished with Compress Spring away from the end face of valve seat, and described valve body is provided with compression spring installation groove, and described Compress Spring and valve seat are coaxial, and described Compress Spring is arranged in compression spring installation groove.
Preferably, the surface of contact of described valve seat and spool and spool are tangent.
Advantage of the present utility model and beneficial effect are: a kind of hard seal ball valve with trapezoidal carbon seal ring is provided, and it adopts and is subject to valve seat Influence of Displacement little, do not need larger decrement just can realize sealing.
The utility model adopts one group of opposing trapezoidal graphite packing to carry out the sealing of valve seat place, trapezoidal graphite packing is due to its manufacturing process and special construction, in whole compactness, compare rectangle graphite packing higher, so that its to produce the required decrement of sealing effect less, can make its oblique anchor ring produce certain wedge power by external pressure in addition and carry out auxiliary seal.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is further described.Following examples are only for the technical solution of the utility model is more clearly described, and can not limit protection domain of the present utility model with this.
The concrete technological scheme of implementing of the utility model is:
As shown in Figure 1, a kind of hard seal ball valve with trapezoidal carbon seal ring, comprises the valve body 1, valve seat 2 and the spool 3 that are assembled together;
Between described spool 3 and valve seat 2, be provided with stuffing box packing 4, described valve seat 2 is provided with stuffing box packing 4 mounting grooves on the surface of contact of itself and spool 3, and described stuffing box packing 4 is arranged in stuffing box packing 4 mounting grooves;
Between described valve body 1 and valve seat 2, be provided with the first trapezoidal carbon seal ring 5, filler gasket ring 6 and the second trapezoidal carbon seal ring 7, described the first trapezoidal carbon seal ring 5, filler gasket ring 6 and the second trapezoidal carbon seal ring 7 are axially enclosed within valve seat 2 peripheries successively along valve seat 2, and described valve seat 2 is provided with the oblique anchor ring matching with the first trapezoidal carbon seal ring 5;
Described the second trapezoidal carbon seal ring 7 and the first trapezoidal carbon seal ring 5 are opposing, and described the second trapezoidal carbon seal ring 7 is furnished with packing press ring 8, and described packing press ring 8 is provided with the oblique anchor ring matching with the second trapezoidal carbon seal ring 7;
Described packing press ring 8 is furnished with Compress Spring 9 away from the end face of valve seat 2, and described valve body 1 is provided with Compress Spring 9 mounting grooves, and described Compress Spring 9 is coaxial with valve seat 2, and described Compress Spring 9 is arranged in Compress Spring 9 mounting grooves.
Described valve seat 2 is tangent with surface of contact and the spool 3 of spool 3.
The first trapezoidal carbon seal ring 5, the second trapezoidal carbon seal ring 7 are arranged between valve seat 2 and packing press ring 8 by direction as shown, in two opposing trapezoidal fillers, adopt filler gasket ring 6 to separate.This trapezoidal filler decrement general control is in 5% left and right.Packing press ring 8 rear portions provide pretension specific pressure by Compress Spring 9.
Due to the special construction of trapezoidal filler, this organizes opposing trapezoidal filler under the effect of a small amount of compression and wedge surface power, and valve seat 2 inner rings and outer ring are produced to seal action.Compress Spring 9 provides a pretension specific pressure to guarantee that valve seat, at low-pressure state lower seal, can guarantee to produce gap between packing press ring 8 and valve body in addition to valve seat in the time of low pressure, is convenient to medium and flows into, and on packing press ring 8, produces seal pressure.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (2)
1. the hard seal ball valve with trapezoidal carbon seal ring, is characterized in that, comprises the valve body, valve seat and the spool that are assembled together;
Described spool and valve base chamber are provided with stuffing box packing, and described valve seat is provided with stuffing box packing mounting groove on the surface of contact of itself and spool, and described stuffing box packing is arranged in stuffing box packing mounting groove;
Described valve body and valve base chamber are provided with the first trapezoidal carbon seal ring, filler gasket ring and the second trapezoidal carbon seal ring, described the first trapezoidal carbon seal ring, filler gasket ring and the second trapezoidal carbon seal ring are axially enclosed within valve seat periphery successively along valve seat, and described valve seat is provided with the oblique anchor ring matching with the first trapezoidal carbon seal ring;
Described the second trapezoidal carbon seal ring and the first trapezoidal carbon seal ring are opposing, and described the second trapezoidal carbon seal ring is furnished with packing press ring, and described packing press ring is provided with the oblique anchor ring matching with the second trapezoidal carbon seal ring;
Described packing press ring is furnished with Compress Spring away from the end face of valve seat, and described valve body is provided with compression spring installation groove, and described Compress Spring and valve seat are coaxial, and described Compress Spring is arranged in compression spring installation groove.
2. the hard seal ball valve with trapezoidal carbon seal ring according to claim 1, is characterized in that, surface of contact and the spool of described valve seat and spool are tangent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320871245.2U CN203670884U (en) | 2013-12-27 | 2013-12-27 | Hard seal ball valve with trapezoid graphite seal rings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320871245.2U CN203670884U (en) | 2013-12-27 | 2013-12-27 | Hard seal ball valve with trapezoid graphite seal rings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203670884U true CN203670884U (en) | 2014-06-25 |
Family
ID=50967181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320871245.2U Expired - Fee Related CN203670884U (en) | 2013-12-27 | 2013-12-27 | Hard seal ball valve with trapezoid graphite seal rings |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203670884U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106051204A (en) * | 2016-08-03 | 2016-10-26 | 常州大学 | Ultra-large diameter all-welded ball valve sealing structure |
| CN106523731A (en) * | 2016-12-16 | 2017-03-22 | 重庆川仪调节阀有限公司 | Lock hopper ball valve |
| CN107061781A (en) * | 2017-06-19 | 2017-08-18 | 中山铁王流体控制设备有限公司 | A kind of double graphite hard seal ball valves of low torque all-metal |
| CN107532729A (en) * | 2015-05-13 | 2018-01-02 | 株式会社开滋 | The seal construction and valve filler of fixed ball valve and valve |
| CN112610716A (en) * | 2021-01-05 | 2021-04-06 | 凯喜姆阀门有限公司 | Valve seat sealing structure |
-
2013
- 2013-12-27 CN CN201320871245.2U patent/CN203670884U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107532729A (en) * | 2015-05-13 | 2018-01-02 | 株式会社开滋 | The seal construction and valve filler of fixed ball valve and valve |
| CN107532729B (en) * | 2015-05-13 | 2019-11-22 | 株式会社开滋 | The seal construction and valve filler of fixed ball valve and valve |
| CN106051204A (en) * | 2016-08-03 | 2016-10-26 | 常州大学 | Ultra-large diameter all-welded ball valve sealing structure |
| CN106523731A (en) * | 2016-12-16 | 2017-03-22 | 重庆川仪调节阀有限公司 | Lock hopper ball valve |
| CN107061781A (en) * | 2017-06-19 | 2017-08-18 | 中山铁王流体控制设备有限公司 | A kind of double graphite hard seal ball valves of low torque all-metal |
| CN112610716A (en) * | 2021-01-05 | 2021-04-06 | 凯喜姆阀门有限公司 | Valve seat sealing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140625 |