CN2075283U - Corrosion resisting eccentricity butterfly valve - Google Patents
Corrosion resisting eccentricity butterfly valve Download PDFInfo
- Publication number
- CN2075283U CN2075283U CN 90222389 CN90222389U CN2075283U CN 2075283 U CN2075283 U CN 2075283U CN 90222389 CN90222389 CN 90222389 CN 90222389 U CN90222389 U CN 90222389U CN 2075283 U CN2075283 U CN 2075283U
- Authority
- CN
- China
- Prior art keywords
- valve
- sealing ring
- valve plate
- ring
- utility
- 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
Disclosed is a corrosion resisting eccentricity butterfly valve. The utility model is characterized in that an elastic sealing ring is a rubber sealing ring whose cross section is in the form of a tongue; the outside of the rubber sealing ring is coated with fluoroplastic; the elastic sealing ring is fixed on a valve plate through a pressing ring; the inner cavity of a valve body is uniformly provided with a fluoroplastic layer; a valve plate in another form and the outer margin of the pressing ring are provided with circular scratch plates. The utility model has the advantages of firm installation of the elastic sealing ring, reliable sealing performance, and long service life which is increased by 8-11 times and is suitable for a fluid conveying pipeline with strongly corrosive liquid with temperature which is less than 150 DEG C and pressure which is less than 1.0 mPa, or the fluid conveying pipeline for liquid with crystallinesubstance or precipitate.
Description
The utility model relates to a kind of corrosion-resistant eccentric-butterfly-valve.
Eccentric-butterfly-valve in the known technology is made up of valve body, eccentric valve plate, rotating shaft part and rubber seal, and in the rubber seal of valve body and the use of valve plate sealing part, being generally sectional shape is that circle or outer rim are the rubber rectangular ring of arc surface.Its deficiency is: when sealing force was excessive, sectional shape easily rotated for circular rubber seal; For the rubber seal that sectional shape is rectangle, then when rotating, valve plate easily from board slot, comes off, and these two kinds of rubber seal all can not obtain reliable sealing performance.In addition, the butterfly valve of this employing rubber seal is only applicable to not have corrosivity and does not contain crystalline solid and sedimentary medium.
The purpose of this utility model is to overcome the known technology deficiency and a kind of corrosion-resistant eccentric-butterfly-valve is provided.
The utility model is realized by following measure:
Elastic seal ring is that sectional shape is the rubber seal of ligulate, and is covered with fluoroplastic in its external packets, and elastic seal ring tightens together by trim ring and valve plate, and body cavity all has one deck polytetrafluoroethylplastic plastic.
Another measure of the present utility model is that the outer rim at valve plate and trim ring has annular scraper.
The utility model compared with prior art, its advantage is that elastic seal ring is installed firmly, sealability is reliable, be applicable to the severe corrosive fluid of temperature≤150 ℃, pressure≤1.0Mpa and contain crystalline solid or sedimentary fluid feed line, and improve 7 than existing butterfly valve working life---10 times.
Description of drawings:
Fig. 1 is a generalized section of the present utility model;
Fig. 2 is the preceding elastic seal ring schematic cross-section of assembling;
Fig. 3 is elastic seal ring assembling schematic representation;
Fig. 4 has the elastic seal ring assembling schematic representation of annular scraper for the outer rim at valve plate and trim ring.
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail:
The utility model by valve body 1, eccentric valve plate 3, rotating shaft 4 and 5 and elastic seal ring 6 etc. form.Elastic seal ring is that sectional shape is ligulate and the rubber seal that is covered with teflon in its external packets, elastic seal ring is contained on the groove of valve plate and by trim ring 2 and compresses, and it compresses component and elastic seal ring rigidity and improves can prevent that seal ring from coming off when valve plate is closed.Owing at body cavity one deck polytetrafluoroethylplastic plastic is arranged all, can greatly improve its decay resistance.It is to have annular scraper in its outer rim that the valve plate 7 and the trim ring 8 of another kind of form are provided, its effect is when around elastic seal ring crystalline solid, tar or deposit being arranged, open and close by valve plate, can it in time be struck off, guarantee that valve operation nimbly and freely and reliable sealing performance by scraper plate.
Claims (2)
1, a kind of corrosion-resistant eccentric-butterfly-valve, form by valve body, eccentric valve plate, rotating shaft part and rubber seal, it is characterized in that elastic seal ring is that sectional shape is the rubber seal of ligulate, its external packets is covered with fluoroplastic, elastic seal ring tightens together by trim ring and valve plate, and body cavity all has one deck fluoroplastic.
2, butterfly valve according to claim 1 is characterized in that the outer rim of valve plate and trim ring has annular scraper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90222389 CN2075283U (en) | 1990-10-23 | 1990-10-23 | Corrosion resisting eccentricity butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90222389 CN2075283U (en) | 1990-10-23 | 1990-10-23 | Corrosion resisting eccentricity butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2075283U true CN2075283U (en) | 1991-04-17 |
Family
ID=4900341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90222389 Expired - Lifetime CN2075283U (en) | 1990-10-23 | 1990-10-23 | Corrosion resisting eccentricity butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2075283U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100359222C (en) * | 2003-10-20 | 2008-01-02 | 西门子公司 | Throttle body |
| CN100443785C (en) * | 2005-12-26 | 2008-12-17 | 陈国顺 | Two-way sealing butterfly valve with conic floating valve seat |
| CN100482986C (en) * | 2006-05-11 | 2009-04-29 | 上海茂德企业发展有限公司 | Three eccentric two-way self-tightening sealing rubber butterfly valve |
| CN103003602A (en) * | 2010-07-16 | 2013-03-27 | 查普特技术有限公司 | Improvement of split valves |
-
1990
- 1990-10-23 CN CN 90222389 patent/CN2075283U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100359222C (en) * | 2003-10-20 | 2008-01-02 | 西门子公司 | Throttle body |
| CN100443785C (en) * | 2005-12-26 | 2008-12-17 | 陈国顺 | Two-way sealing butterfly valve with conic floating valve seat |
| CN100482986C (en) * | 2006-05-11 | 2009-04-29 | 上海茂德企业发展有限公司 | Three eccentric two-way self-tightening sealing rubber butterfly valve |
| CN103003602A (en) * | 2010-07-16 | 2013-03-27 | 查普特技术有限公司 | Improvement of split valves |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |