CN202100724U - Valve of fully-welded bellows - Google Patents
Valve of fully-welded bellows Download PDFInfo
- Publication number
- CN202100724U CN202100724U CN2011202041686U CN201120204168U CN202100724U CN 202100724 U CN202100724 U CN 202100724U CN 2011202041686 U CN2011202041686 U CN 2011202041686U CN 201120204168 U CN201120204168 U CN 201120204168U CN 202100724 U CN202100724 U CN 202100724U
- Authority
- CN
- China
- Prior art keywords
- valve
- bellows
- rod
- valve rod
- gap
- 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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- Details Of Valves (AREA)
Abstract
The utility model relates to a valve of a fully-welded bellows, which comprises a valve body, a valve seat, a valve plate, a valve rod, a valve cover, a hand wheel and the bellows. A valve clack is fixed at the lower end of the valve rod, and two ends of the bellows are respectively welded to the valve cover and the valve rod in sealing mode. The key point is that a packing sealing device is arranged between the valve rod and the valve cover, a connection pipe is welded between the valve cover and the valve body, so that fully-welded sealing between the valve rod, the valve cover and the valve body can be achieved. The valve is good in sealing performance and suitable for working conditions where a sealing requirement is high.
Description
Technical field
The utility model relates to valve field, specifically about a kind of valve of sylphon seal.
Background technique
The valve of sylphon seal generally uses on gate valve and stop valve; Its structure comprises valve body, valve seat, valve plate, valve rod, valve gap, handwheel, bellows; Valve plate is fixed on the valve rod lower end, adopts sylphon seal between valve rod and the valve gap, is connected through flange seal between valve gap and the valve body.Its shortcoming is to use for a long time when take place leaking when bellows, and medium will leak outside between valve rod and valve gap, and flange seal is connected and in use is prone to leakage, poor sealing performance between valve gap and the valve body.
Summary of the invention
The purpose of the utility model is the shortcoming that exists to existing technology, and a kind of full welded bellows valve of good seal performance is provided.
The technological scheme of the utility model comprises valve body, valve seat, valve plate, valve rod, valve gap, handwheel, bellows; Valve plate is fixed on the valve rod lower end; Bellows two ends seal weld respectively are connected on valve gap and the valve rod; Mainly be between valve rod and valve gap, to be provided with stuffing seal, welding one is taken between valve gap and the valve body.
The utility model has the advantages that and adopt bellows and stuffing seal double seal between valve rod and the valve gap, be tightly connected its good seal performance through welding an adapter between valve gap and the valve body.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
Full welded bellows valve as shown in Figure 1; Comprise valve body 1, valve seat, valve plate, valve rod 3, valve gap 6, handwheel, bellows 4; Valve plate is fixed on valve rod 3 lower ends; Bellows 4 two ends seal weld respectively are connected on valve gap 6 and the valve rod 3, and bellows 4 lower ends overlap with the boss of valve rod 3 lower ends and weld together, and bellows 4 upper ends and valve gap 6 lower end surfaces weld together.Between valve rod 3 and valve gap 6, be provided with stuffing seal 7; Welding one takes over 2 between valve gap 6 and the valve body 1; This is taken over 2 and realizes in bellows 4 outsides being connected and sealing of valve gap 6 and valve body 1 made the full welded seal of realization between valve rod 3, valve gap 6, valve body 1 three.One spline pin 5 is installed on the valve rod 3, is prevented that bellows 4 is reversed and damages in valve rod 3 lifting process.The structural type of the utility model can my stop valve or gate valve.
Claims (1)
1. full welded bellows valve; Comprise valve body (1), valve seat, valve plate, valve rod (3), valve gap (6), handwheel, bellows (4); Valve plate is fixed on valve rod (3) lower end; Bellows (4) two ends seal weld respectively are connected on valve gap (6) and the valve rod (3), it is characterized in that between valve rod (3) and valve gap (6), being provided with stuffing seal, and (2) are taken in welding one between valve gap (6) and the valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202041686U CN202100724U (en) | 2011-06-16 | 2011-06-16 | Valve of fully-welded bellows |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202041686U CN202100724U (en) | 2011-06-16 | 2011-06-16 | Valve of fully-welded bellows |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202100724U true CN202100724U (en) | 2012-01-04 |
Family
ID=45386738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202041686U Expired - Lifetime CN202100724U (en) | 2011-06-16 | 2011-06-16 | Valve of fully-welded bellows |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202100724U (en) |
-
2011
- 2011-06-16 CN CN2011202041686U patent/CN202100724U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120104 |
|
| CX01 | Expiry of patent term |