CN2699073Y - High temperature abrasion-proof adjustable rigid sealing butterfly valve - Google Patents
High temperature abrasion-proof adjustable rigid sealing butterfly valve Download PDFInfo
- Publication number
- CN2699073Y CN2699073Y CN 200420027616 CN200420027616U CN2699073Y CN 2699073 Y CN2699073 Y CN 2699073Y CN 200420027616 CN200420027616 CN 200420027616 CN 200420027616 U CN200420027616 U CN 200420027616U CN 2699073 Y CN2699073 Y CN 2699073Y
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- CN
- China
- Prior art keywords
- sealing
- valve
- butterfly plate
- sealing surface
- butterfly
- 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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Abstract
The utility model relates to a high temperature abrasion-proof adjustable rigid sealing butterfly valve, comprising a valve body, a valve rod, a butterfly plate, a driving device, a sealing member and an installing member. The valve body is provided with a valve seat sealing surface matched with the sealing surface of the butterfly plate. The sealing surface of the butterfly plate comprises a sealing ring forged by 304 materials and a pressure loop pressed on the butterfly plate. The back side of the sealing ring is provided with an adjusting washer, and the sealing surface is not easy to be flushed by mediums. When the sealing ring is worn during long using process, the sealing performance of the valve gate can be recovered by adjusting the adjusting washer. The utility model which has the advantages of good sealing performance and long service life is an opening and closing device with high performance used on various medium pipelines of oilfield, chemical industry and electric power industries.
Description
Technical field
The utility model relates to a kind of valve, specifically about a kind of hard seal butterfly valve.
Background technique
The hard seal butterfly valve of domestic production at present is divided into elastic sealing structure and multi-level sealing configuration substantially.The elastic sealing structure butterfly valve relying on the elastic seal ring on the valve body to deform under the valve closing state, reaches interference fit and realizes sealing function.Its major defect is: in the frequent keying of using process, the elastic packing loop material fatigue occurs easily and follows the string, and does not reach seal request; Elastic seal ring is easily annealed phenomenon and is out of shape under the worst hot case, does not reach seal request; Sealing pair is linear sealing, and working life and scope are restricted.The butterfly valve of multi-level sealing configuration, the sealing pair on its butterfly plate is formed by the alternate gummed with the rubber asbestos material of metallic material, and when the butterfly plate unlatching was in 90 ° of states, velocity of medium made the valve seal decreased performance to the erosion that the rubber asbestos produce.So the butterfly valve of these two kinds of structures all exists sealability unreliable, the problem that working life is short.
Summary of the invention
The purpose of this utility model is the shortcoming that exists at prior art, and a kind of high-temperature wearable can regulate hard seal butterfly valve reliable, that the life-span is long that seals is provided.
The technological scheme that realizes the utility model purpose comprises valve body, valve rod, butterfly plate, transmission device and Sealing and assembling set, be shaped on the sealing surface of seat that cooperatively interacts with the butterfly plate sealing surface on the valve body, it mainly is the seal ring that the butterfly plate sealing surface adopts 304 materials to forge, be fitted on the butterfly plate by pressure ring and form, the seal ring back side is provided with adjusting washer (disk).
In above technological scheme, adopt right circular cone oblique section sealing pair structure between butterfly plate sealing surface and the sealing surface of seat.
The utility model beneficial effect compared with prior art is the seal ring that the butterfly plate sealing surface adopts 304 materials to forge, the seal ring back side is provided with adjusting washer (disk), sealing surface is not subject to medium and washes away, when seal ring is worn in long-term the use, can have advantages such as good seal performance, long service life by adjusting the sealability that adjusting washer (disk) recovers valve.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
Now further describe the technical solution of the utility model in conjunction with the accompanying drawings and embodiments.
High-temperature wearable can regulate hard seal butterfly valve as shown in Figure 1, comprise valve body 6, valve rod 9, butterfly plate 7, transmission device and Sealing and assembling set, be shaped on the sealing surface of seat that cooperatively interacts with the butterfly plate sealing surface on the valve body 6, the seal ring 13 that the butterfly plate sealing surface adopts 304 materials to forge, be fitted on the butterfly plate 7 by pressure ring 14 and form, can high temperature high voltage resistant and not washed away by medium, circumference evenly is provided with mounting screw 16 between pressure ring 14 and the butterfly plate 7.Seal ring 13 back sides are provided with adjusting washer (disk) 15, when valve seal is secondary long-term when not reaching sealing after using, do not need to dismantle valve, as long as valve opened after 90 ° pressure ring 14 are unloaded, and change adjusting washer (disk) 15, can recover sealing function.Adopt right circular cone oblique section sealing pair structure between butterfly plate 7 sealing surfaces and the sealing surface of seat, sealing pair is face seal, the circumference each point breaks away from sealing surface of seat simultaneously on butterfly plate 7 sealing surfaces when valve opening, butterfly plate 7 sealing surfaces are fade-in with respect to sealing surface of seat and compress when closing, and have reduced the mechanical wear between secondary two sealing surfaces of butterfly valve seal in the opening-closing process.Flexible graphite packing 10 is adopted in valve rod diameter of axle sealing, Gland 11 and support 12 by screw on valve body 6.Fixedly connected by pin 8 between valve rod 9 and the butterfly plate 7.End cap 1 is equipped with in the bottom of valve body 6, establishes gasket seal 2 between end cap 1 and the valve body 6, and fixing by screw 3.Be provided with between valve rod 9 bottom ends and the end cap 1 and adjust pad 4, be provided with divided ring 5 between valve rod 9 bottoms and the valve body 6, valve rod 9 axially locating.
Claims (2)
1, a kind of high-temperature wearable can regulate hard seal butterfly valve, comprise valve body (6), valve rod (9), butterfly plate (7), transmission device and Sealing and assembling set, be shaped on the sealing surface of seat that cooperatively interacts with butterfly plate (7) sealing surface on the valve body (6), it is characterized in that the seal ring (13) that butterfly plate (7) sealing surface adopts 304 materials to forge, be fitted on the butterfly plate (7) by pressure ring (14) and form, seal ring (14) back side is provided with adjusting washer (disk) (15).
2, high-temperature wearable can regulate hard seal butterfly valve according to claim 1 is characterized in that adopting between butterfly plate (7) sealing surface and the sealing surface of seat right circular cone oblique section sealing pair structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420027616 CN2699073Y (en) | 2004-05-28 | 2004-05-28 | High temperature abrasion-proof adjustable rigid sealing butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420027616 CN2699073Y (en) | 2004-05-28 | 2004-05-28 | High temperature abrasion-proof adjustable rigid sealing butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2699073Y true CN2699073Y (en) | 2005-05-11 |
Family
ID=34771709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420027616 Expired - Fee Related CN2699073Y (en) | 2004-05-28 | 2004-05-28 | High temperature abrasion-proof adjustable rigid sealing butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2699073Y (en) |
-
2004
- 2004-05-28 CN CN 200420027616 patent/CN2699073Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |