CN204677784U - A kind of three eccentricity hard seal butterfly valve - Google Patents
A kind of three eccentricity hard seal butterfly valve Download PDFInfo
- Publication number
- CN204677784U CN204677784U CN201520343534.4U CN201520343534U CN204677784U CN 204677784 U CN204677784 U CN 204677784U CN 201520343534 U CN201520343534 U CN 201520343534U CN 204677784 U CN204677784 U CN 204677784U
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- valve
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- valve rod
- end surface
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Abstract
The utility model discloses a kind of three eccentricity hard seal butterfly valve, comprise base, base is provided with valve body, base upper-end surface is provided with the valve rod running through valve body, valve rod is also provided with the valve plate being positioned at valve body cavity, the valve rod between base upper end to valve body cavity is set with successively and splits annulus, collar, lower steel pad, lower guide ring, anti-gray braid; Valve body cavity to the valve rod of valve body upper-end surface is provided with successively upper guide collar, upper steel pad, graphite packing, graphite packing, Gland; The valve rod of Gland upper end is set with hold-down grid, and hold-down grid and described valve body upper-end surface are bolted part and fix.The utility model novel and reasonable structure, by the setting to multi-sealing structure between butterfly valve valve rod and valve body contact section, effectively can improve that it is high temperature resistant, working life under high pressure and corrosion-resistant, the environment that resistance to wears.
Description
technical field:
The utility model relates to butterfly valve, particularly relates to a kind of three eccentricity hard seal butterfly valve.
background technique:
At present, butterfly valve as a kind of parts being used for realizing pipe-line system break-make and flow control, in known butterfly valve technology, its seal form many employings sealing configuration, sealing material is rubber, teflon soft seal etc.; Due to the restriction of structure characteristic, be not suitable with high temperature resistant, high pressure and corrosion-resistant, the industry such as to resistance to wear.
Certainly also have metal hard-sealing butterfly valve, valve body and valve seat are disjunctor component, valve seat sealing surface layer built-up welding heatproof, corrosion resistant alloy material.The soft stacked seal ring of multilayer is fixed on valve plate, this butterfly valve has high temperature resistant compared with traditional butterfly valve, operates light, opens and closes without friction, compensation sealing, the sealability that improve butterfly valve and the advantage increased the service life is come along with the moment of driving mechanism increases during closedown.
Above-mentioned butterfly valve ubiquity defect, has mainly focused on the sealing configuration between valve plate and valve body cavity, has but ignored the sealing between valve rod and valve body contact section, causes be affected the working life of butterfly valve.
model utility content:
In order to make up prior art problem, the purpose of this utility model is to provide a kind of three eccentricity hard seal butterfly valve, novel and reasonable structure, effectively can improve that it is high temperature resistant, working life under high pressure and corrosion-resistant, the environment that resistance to wears.
The technical solution of the utility model is as follows:
Three eccentricity hard seal butterfly valve, comprise base, base is provided with valve body, base upper-end surface is provided with the valve rod running through valve body, valve rod is also provided with the valve plate being positioned at valve body cavity, it is characterized in that: the valve rod between described base upper end to valve body cavity is set with successively and splits annulus, collar, lower steel pad, lower guide ring, anti-gray braid; Described valve body cavity to the valve rod of valve body upper-end surface is provided with successively upper guide collar, upper steel pad, graphite packing, graphite packing, Gland; The valve rod of described Gland upper end is set with hold-down grid, and hold-down grid and described valve body upper-end surface are bolted part and fix.
Described three eccentricity hard seal butterfly valve, is characterized in that: described Gland is cylinder-shaped, and the lower end of cylindrical shell extend in the annular space between valve body and valve rod, and valve body upper-end surface one certain distance is stretched out in upper end.
Described three eccentricity hard seal butterfly valve, is characterized in that: described graphite packing along the height in valve rod axis direction is being 1/3 ~ 1/2 of graphite packing height.
The utility model has the advantages that:
The utility model novel and reasonable structure, by the setting to multi-sealing structure between butterfly valve valve rod and valve body contact section, effectively can improve that it is high temperature resistant, working life under high pressure and corrosion-resistant, the environment that resistance to wears.
accompanying drawing illustrates:
Fig. 1 is structural representation of the present utility model.
embodiment:
See accompanying drawing:
Three eccentricity hard seal butterfly valve, comprise base 1, base 1 is provided with valve body 2, base 2 upper-end surface is provided with the valve rod 3 running through valve body, valve rod 3 is also provided with the valve plate 4 being positioned at valve body cavity, the valve rod between base 2 upper end to valve body cavity is set with successively and splits annulus 5, collar 6, lower steel pad 7, lower guide ring 8, anti-gray braid 9; Valve body cavity to the valve rod 3 of valve body upper-end surface is provided with successively upper guide collar 10, upper steel pad 11, graphite packing 12, graphite packing 13, Gland 14; The valve rod of Gland 14 upper end is set with hold-down grid 15, and hold-down grid 15 and valve body 2 upper-end surface are bolted part 16 and fix.
Gland 14 is cylinder-shaped, and the lower end of cylindrical shell extend in the annular space between valve body 2 and valve rod 3, and valve body 2 upper-end surface one certain distance is stretched out in upper end.
Graphite packing 12 along the height in valve rod axis direction is being 1/3 ~ 1/2 of graphite packing 13 height.
The utility model, by setting to multi-sealing structure between butterfly valve valve rod and valve body contact section, effectively can improve that it is high temperature resistant, working life under high pressure and corrosion-resistant, the environment that resistance to wears.
Claims (3)
1. a three eccentricity hard seal butterfly valve, comprise base, base is provided with valve body, base upper-end surface is provided with the valve rod running through valve body, valve rod is also provided with the valve plate being positioned at valve body cavity, it is characterized in that: the valve rod between described base upper end to valve body cavity is set with successively and splits annulus, collar, lower steel pad, lower guide ring, anti-gray braid; Described valve body cavity to the valve rod of valve body upper-end surface is provided with successively upper guide collar, upper steel pad, graphite packing, graphite packing, Gland; The valve rod of described Gland upper end is set with hold-down grid, and hold-down grid and described valve body upper-end surface are bolted part and fix.
2. three eccentricity hard seal butterfly valve according to claim 1, is characterized in that: described Gland is cylinder-shaped, and the lower end of cylindrical shell extend in the annular space between valve body and valve rod, and valve body upper-end surface one certain distance is stretched out in upper end.
3. three eccentricity hard seal butterfly valve according to claim 1, is characterized in that: described graphite packing along the height in valve rod axis direction is being 1/3 ~ 1/2 of graphite packing height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520343534.4U CN204677784U (en) | 2015-05-25 | 2015-05-25 | A kind of three eccentricity hard seal butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520343534.4U CN204677784U (en) | 2015-05-25 | 2015-05-25 | A kind of three eccentricity hard seal butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204677784U true CN204677784U (en) | 2015-09-30 |
Family
ID=54177477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520343534.4U Expired - Fee Related CN204677784U (en) | 2015-05-25 | 2015-05-25 | A kind of three eccentricity hard seal butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204677784U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104913070A (en) * | 2015-05-25 | 2015-09-16 | 蚌埠南自仪表有限公司 | Three-eccentricity hard sealing butterfly valve |
-
2015
- 2015-05-25 CN CN201520343534.4U patent/CN204677784U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104913070A (en) * | 2015-05-25 | 2015-09-16 | 蚌埠南自仪表有限公司 | Three-eccentricity hard sealing butterfly valve |
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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: 20150930 Termination date: 20160525 |