CN201661696U - Three-eccentric butterfly valve - Google Patents
Three-eccentric butterfly valve Download PDFInfo
- Publication number
- CN201661696U CN201661696U CN2010201158626U CN201020115862U CN201661696U CN 201661696 U CN201661696 U CN 201661696U CN 2010201158626 U CN2010201158626 U CN 2010201158626U CN 201020115862 U CN201020115862 U CN 201020115862U CN 201661696 U CN201661696 U CN 201661696U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve rod
- valve body
- eccentric butterfly
- rod
- 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
Links
Abstract
The utility model relates to a three-eccentric butterfly valve, which comprises a valve body, a valve rod and a valve plate. Between the valve rod and the valve body a bushing is arranged. The bushing forms a clearance fit with the valve rod and contacts the valve rod through a seal ring. The tail end of the valve rod is contacted with the valve body through a flexible component. Due to the adoption of the bushing arranged at two ends of the valve plate, the valve rod when in rotation centers. The inside of the bushing is provided with a graphite seal ring to prevent the impurity from entering the fluid media and improve the useful life of the product. The valve rod and the valve body contact through a dish-shaped gasket to prevent the valve from expanding or jamming at high temperature and ensure the device running under the normal state.
Description
Technical field
The utility model relates to valve field, especially three eccentric butterfly valve.
Background technique
Three eccentric butterfly valve has compact structure, little, in light weight, the material consumption province of volume, installation dimension is little, switch is rapid, 90 ° of reciprocating rotatings, driving moment is little, long service life, advantage such as easy for installation, have good fluid control characteristic and close sealability, be used for blocking, connect, regulating the medium of pipeline, in pipe-line system, be used widely; Especially press the structural characteristics that is directly proportional with pressure medium because three eccentric butterfly valve has surface of contact, therefore have the advantage of high pressure resistant high temperature, go for the hot environment that general butterfly valve is difficult to use.Present general three eccentric butterfly valve is provided with guideway as inventing 200810121559 disclosed structures between valve rod and valve body, be provided with the plane bearing of oil-free lubrication shape in the bottom of valve rod; Because the gap between guideway and the valve rod is very little, add and make and assembly error, not only in general using process, the dust in the flowing medium, particle, liquid enter packing layer, valve rod, valve body by the gap, can cause corrosion phenomenon; And use the back for a long time under the condition of high temperature because the characteristic of expanding with heat and contract with cold of stem material can make gap smaller, and influenced the rotation of butterfly valve, when serious even that valve takes place is stuck, can't the open and close valve, cause device damage or security incident.
The model utility content
The applicant is easy to wear at above-mentioned existing three eccentric butterfly valve key components and parts, in hot environment, use easy generating material heat expansion, the shortcoming that valve is stuck provides a kind of three eccentric butterfly valve rational in infrastructure, thereby can satisfy the needs that hot environment works long hours.
The technological scheme that the utility model adopted is as follows:
A kind of three eccentric butterfly valve comprises valve body, valve rod and valve plate, is provided with axle sleeve between valve rod and valve body, and described axle sleeve cooperates with valve lever clearance and contacts by seal ring; Valve stem end contacts with valve body by elastic member.Be further characterized in that:
Described axle sleeve inner side surface is provided with circular groove near valve plate one side, and groove is embedded in graphite-seal ring;
Described elastic member is dish-like packing ring.
The utility model by be provided with at the valve plate two ends axle sleeve guarantee valve rod when rotating to the heart; In the axle sleeve inboard graphite-seal ring is set, can prevents the invasion of impurity in the flowing medium, improve the working life of product; Valve rod contacts by dish-like packing ring with valve body, can avoid swelling or stuck phenomenon occurring under the condition of high temperature, guarantees the normal operation of equipment.
Description of drawings
Fig. 1 is a sectional view of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described.
As shown in Figure 1, three eccentric butterfly valve described in the utility model, comprise valve body 2, valve rod 1 and valve plate 5, valve plate 5 cooperates with valve rod 1 by pin 6, is provided with axle sleeve 3 between valve rod 1 and valve body 5, the inner chamber interference fit of axle sleeve 3 and valve body 2 at two side positions up and down of valve plate 5, with valve rod 1 Spielpassung, side at the close described valve plate 5 of axle sleeve 3 inner side surfaces is provided with circular groove, and groove is embedded in graphite-seal ring 4, and assembling back elastic compression contacts with valve rod 1; Valve rod 1 end is inserted in the interior ring of dish-like packing ring 7, and dish-like packing ring 7 ends contact with valve body 2.
The utility model is provided with axle sleeve 3 at valve plate 5 upper and lower sides and supports valve rod 1, can guarantee that valve rod 1 guarantees when rotating the heart; In axle sleeve 3 inboards graphite-seal ring 4 is set, can prevents the invasion of impurity in the flowing medium, improve the working life of product; Valve rod 1 contacts by dish-like packing ring with valve body 7, valve rod 1 is in correct working position in the time of both can guaranteeing work, and under the condition of high temperature, even the phenomenon of heat expansion takes place in valve rod 1, the length that is increased can be absorbed by the resiliently deformable of dish-like packing ring 7, therefore avoid occurring swelling or stuck phenomenon, guarantee the normal operation of equipment.
Certainly, valve rod 1 also can contact by other elastic members such as high-temperature resistant rubber circle etc. with valve body 7; Graphite-seal ring 4 also can adopt other high temperature resistant elastic material to substitute.
More than describing is to explanation of the present utility model, is not the qualification to model utility, and the utility model institute restricted portion is referring to claim, and under the situation of spirit of the present utility model, the utility model can be done any type of modification.
Claims (3)
1. a three eccentric butterfly valve comprises valve body, valve rod and valve plate, is provided with axle sleeve between valve rod and valve body, it is characterized in that: described axle sleeve cooperates with valve lever clearance and contacts by seal ring; Valve stem end contacts with valve body by elastic member.
2. three eccentric butterfly valve as claimed in claim 1 is characterized in that: described axle sleeve inner side surface is provided with circular groove near described valve plate one side, and groove is embedded in graphite-seal ring.
3. three eccentric butterfly valve as claimed in claim 1 is characterized in that: described elastic member is dish-like packing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201158626U CN201661696U (en) | 2010-02-11 | 2010-02-11 | Three-eccentric butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201158626U CN201661696U (en) | 2010-02-11 | 2010-02-11 | Three-eccentric butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201661696U true CN201661696U (en) | 2010-12-01 |
Family
ID=43232111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201158626U Expired - Fee Related CN201661696U (en) | 2010-02-11 | 2010-02-11 | Three-eccentric butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201661696U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112145713A (en) * | 2020-09-10 | 2020-12-29 | 耐氟隆集团有限公司 | Zero-leakage high-performance fluorine-lined butterfly valve |
-
2010
- 2010-02-11 CN CN2010201158626U patent/CN201661696U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112145713A (en) * | 2020-09-10 | 2020-12-29 | 耐氟隆集团有限公司 | Zero-leakage high-performance fluorine-lined butterfly valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101201 Termination date: 20130211 |