CN203670824U - Three-link butterfly valve bellows sealing structure - Google Patents
Three-link butterfly valve bellows sealing structure Download PDFInfo
- Publication number
- CN203670824U CN203670824U CN201320741274.7U CN201320741274U CN203670824U CN 203670824 U CN203670824 U CN 203670824U CN 201320741274 U CN201320741274 U CN 201320741274U CN 203670824 U CN203670824 U CN 203670824U
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- Prior art keywords
- valve
- sealing
- sealing structure
- valve plate
- valve seat
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- Expired - Fee Related
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- 238000007789 sealing Methods 0.000 title claims abstract description 73
- 230000007935 neutral effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
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Abstract
The utility model provides a three-link butterfly valve bellows sealing structure. The three-link butterfly valve bellows sealing structure comprises a valve body, a valve plate and a valve seat. The valve body is fixedly connected with the valve seat. A valve plate spindle is perpendicularly fixed to the middle of the valve plate. One end of a primary rocker and one end of a secondary rocker are hinged to the valve plate spindle, and the other end of the primary rocker and the other end of the secondary rocker are hinged to a rack. A sealing structure body is arranged between the valve plate and the valve seat and comprises a hard sealing structure part and a bellows sealing structure part. The three-link butterfly valve bellows sealing structure is simple and good in sealing effect, and the service life of a valve is long.
Description
Technical field
The utility model relates to a kind of sealing configuration, relates in particular to a kind of three Connecting rod butterfly valve corrugated tube sealing structures.
Background technique
Along with the development of metallurgical steel-making cause of modern times, for reducing costs, be convenient to management, more and more application butterfly valves substitute gate valve.Butterfly valve is again Flap valve, be a kind of modulating valve simple in structure, also can be used for the switch control of low pressure pipeline medium simultaneously, butterfly valve refers to that closure member (flap or butterfly plate) is disk, rotate to reach a kind of valve of open and close around valve shaft, on pipeline, main rising cut off and throttling action.Because application of temperature is higher, rubber seal heatproof deficiency, needs to adopt very stiff and demanding seal butterfly valve, and during simultaneously due to high temperature, sealing material thermal expansion coefficient is large, generally adopts three link butterfly valves.Three link butterfly valve valve plates and valve seat machining accuracy are high, though sealing surface departs from rapidly, long-term use still can cause small scratch, impact sealing.
Summary of the invention
Problem to be solved in the utility model is to provide a kind of three Connecting rod butterfly valve corrugated tube sealing structures of simple in structure, good sealing effect.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of three Connecting rod butterfly valve corrugated tube sealing structures are provided, comprise valve body, valve plate and valve seat, described valve body is fixedly connected with valve seat, described valve plate neutral position is vertically fixed with a valve plate main shaft, main rocker and being hinged on described valve plate main shaft from one end of rocking bar, described main rocker and being hinged on respectively a frame from the other end of rocking bar, between described valve plate and valve seat, be provided with sealing configuration, described sealing configuration comprises hard sealing structure and corrugated tube sealing structure, described hard sealing structure is a right angle frame, one bar limit is vertically fixed on the end of described valve seat, another side is the sealing surface contacting with described valve plate, described corrugated tube sealing structure is arranged on the outside of described hard sealing structure, comprise bellows, dunnage and sealing panel, described bellows is arranged between described hard sealing structure and described dunnage, its one end is fixed on described valve seat, the other end connects described sealing panel, described dunnage is fixed on described valve seat, the surface of contact of described valve plate and described sealing panel is an inclined-plane.
Angle between inclined-plane and the vertical surface of the surface of contact of described valve plate and described sealing panel is α, and the size of α is between 1～1.5 °.
Described bellows adopts high performance elastic metallic bellows.
Advantage and the good effect that the utlity model has are: three Connecting rod butterfly valve corrugated tube sealing structures of the present utility model, adopt hard sealing structure and corrugated tube sealing structure double-layer seal, and metal bellows adopts high performance elastic metallic bellows, flexible fatigue life is long, after hard sealing structure is worn, still can effectively guarantee the sealability of valve, extend the working life of valve.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure:
1, valve body 2, valve plate 3, valve seat 4, valve plate main shaft
5, main rocker 6, from rocking bar 7, frame 8, hard sealing structure
9, corrugated tube sealing structure 10, bellows 11, dunnage 12, sealing panel
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
As shown in Figure 1, the utility model embodiment's three Connecting rod butterfly valve corrugated tube sealing structures, comprise valve body 1, valve plate 2 and valve seat 3, described valve seat 3 is fixedly connected in the inner chamber of described valve body 1, described valve plate 2 neutral positions are vertically fixed with a valve plate main shaft 4, main rocker 5 and being hinged on described valve plate main shaft 4 from one end of rocking bar 6, described main rocker 5 and being hinged on respectively a frame 7 from the other end of rocking bar 6, between described valve plate 2 and valve seat 3, be provided with sealing configuration, described sealing configuration comprises hard sealing structure 8 and corrugated tube sealing structure 9, described hard sealing structure 8 is a right angle frame, one bar limit is vertically fixed on the end of described valve seat 3, another side is the sealing surface contacting with described valve plate 2, described corrugated tube sealing structure 9 is arranged on the outside of described hard sealing structure 8, comprise bellows 10, dunnage 11 and sealing panel 12, described bellows 10 is arranged between described hard sealing structure 8 and described dunnage 11, its one end is fixed on described valve seat 3, the other end connects described sealing panel 12, described dunnage 11 is fixed on described valve seat 3, described valve plate 2 is an inclined-plane with the surface of contact of described sealing panel 12.
Angle between inclined-plane and the vertical surface of the surface of contact of described valve plate 2 and described sealing panel 12 is α, and the size of α is between 1～1.5 °.
Described bellows adopts high performance elastic metallic bellows.
In use, shake main rocker 5 is driven from rocking bar 6 valve plate main shaft 4 is moved left and right by frame 7, in the time wanting throttle down, valve plate 2 is moved to the left, valve plate 2 presses to valve seat 3, when valve plate 2 touches touch panel 12, bellows 10 starts to produce resiliently deformable, sealing panel 12 fits tightly with the sealing surface of valve plate 2, form first tight seal, the certain position moving when valve plate 2, valve plate 2 contacts with the sealing surface of hard sealing structure 8, sealing surface is weldering cemented carbide sealing surface herein, form second sealing with valve plate 2, thereby the sealability of valve is increased greatly, extend working life.
Above embodiment of the present utility model is had been described in detail, but described content is only preferred embodiment of the present utility model, can not be considered to for limiting practical range of the present invention.All equalization variation and improvement etc. of doing according to the utility model scope, within all should still belonging to this patent covering scope.
Claims (3)
1. three Connecting rod butterfly valve corrugated tube sealing structures, it is characterized in that: comprise valve body, valve plate and valve seat, described valve body is fixedly connected with valve seat, described valve plate neutral position is vertically fixed with a valve plate main shaft, main rocker and being hinged on described valve plate main shaft from one end of rocking bar, described main rocker and being hinged on respectively a frame from the other end of rocking bar, between described valve plate and valve seat, be provided with sealing configuration, described sealing configuration comprises hard sealing structure and corrugated tube sealing structure, described hard sealing structure is a right angle frame, one bar limit is vertically fixed on the end of described valve seat, another side is the sealing surface contacting with described valve plate, described corrugated tube sealing structure is arranged on the outside of described hard sealing structure, comprise bellows, dunnage and sealing panel, described bellows is arranged between described hard sealing structure and described dunnage, its one end is fixed on described valve seat, the other end connects described sealing panel, described dunnage is fixed on described valve seat, the surface of contact of described valve plate and described sealing panel is an inclined-plane.
2. three Connecting rod butterfly valve corrugated tube sealing structures according to claim 1, is characterized in that: the angle between inclined-plane and the vertical surface of the surface of contact of described valve plate and described sealing panel is α, and the size of α is between 1～1.5 °.
3. three Connecting rod butterfly valve corrugated tube sealing structures according to claim 1, is characterized in that: described bellows adopts high performance elastic metallic bellows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320741274.7U CN203670824U (en) | 2013-11-20 | 2013-11-20 | Three-link butterfly valve bellows sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320741274.7U CN203670824U (en) | 2013-11-20 | 2013-11-20 | Three-link butterfly valve bellows sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203670824U true CN203670824U (en) | 2014-06-25 |
Family
ID=50967122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320741274.7U Expired - Fee Related CN203670824U (en) | 2013-11-20 | 2013-11-20 | Three-link butterfly valve bellows sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203670824U (en) |
-
2013
- 2013-11-20 CN CN201320741274.7U patent/CN203670824U/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 | ||
| CP03 | Change of name, title or address |
Address after: 301802 No. 3 Road, nine yuan industrial park, Da Bai street, Baodi District, Tianjin Patentee after: TIANJIN KRS VALVE Co.,Ltd. Address before: 301802 No. three road, nine yuan industrial park, Baodi District, Tianjin. Patentee before: TIANJIN K.R.S VALVE Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140625 |