CN202118272U - Butterfly valve - Google Patents
Butterfly valve Download PDFInfo
- Publication number
- CN202118272U CN202118272U CN2011202267790U CN201120226779U CN202118272U CN 202118272 U CN202118272 U CN 202118272U CN 2011202267790 U CN2011202267790 U CN 2011202267790U CN 201120226779 U CN201120226779 U CN 201120226779U CN 202118272 U CN202118272 U CN 202118272U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve rod
- rod
- handle
- cover
- 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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- Lift Valve (AREA)
Abstract
The utility model discloses a butterfly valve, which comprises a valve body, a valve clack, a valve rod, a corrugated pipe, a valve cover, a support cylinder, a hand wheel and a valve handle. The valve clack is arranged on a cavity of the valve body, one end of the valve handle is arranged in the valve body in a penetrating mode and fixed to the valve clack on the cavity of the valve body, a guiding pin is arranged at the other end of the valve handle, a spiral shaft guiding groove slidingly matched with the guiding pin on the valve handle is arranged at one end of the valve rod, and the hand wheel is installed at the other end of the valve rod. The valve cover and the support cylinder are sleeved on the valve rod, the valve cover and the support cylinder are fixed with each other, the corrugated pipe in fixed seal connection with the valve cover is further sleeved on the valve rod, and the corrugated pipe is in fixed seal match with the valve rod. By means of the structure, the butterfly valve adopts the fixed seal connection of the corrugated pipe, the valve cover and the valve rod to achieve seal between the valve rod and the valve cover, and enables dynamic seal between the valve rod and the valve cover in the prior art to be changed into static seal, thereby improving sealing reliability between the valve rod and the valve cover and prolonging service life of the butterfly valve.
Description
Technical field
The utility model relates to a kind of valve, is specifically related to a kind of butterfly valve.
Background technique
Butterfly valve is a kind of valve commonly used; Generally comprise valve body, valve rod, flap, valve gap etc.; Flap is a disk, and flap rotates the function that realizes that body cavity is opened or closed on body cavity under the effect of valve rod, on pipeline, mainly plays a part to cut off or throttling.In the rotary movement of valve rod and flap; Can produce relative movement between valve rod and the valve gap; And be sealed into motive sealing between valve rod and the valve gap in the existing technology; Promptly produce to leak the duct, and the space is filled through modes such as pressurizations with filler herein, prevent that medium from leaking in their intersection of relative movement.This lean on packing compress, be out of shape the shortcoming that there is poor reliability in the anti-leaking method that stops up narrow crack, i.e. the leakproof time is not lasting, must periodical repair could not leak temporary transient assurance a period of time.
Summary of the invention
To the deficiency of existing technology, the utility model provides between a kind of valve rod and the valve gap sealing reliability butterfly valve preferably.
For realizing above-mentioned purpose, the utility model provides a kind of butterfly valve, comprises valve body, flap, valve rod, bellows, valve gap, rack tube, handwheel, valve handle; Flap is located on the body cavity; One end of valve handle be located in the valve body with body cavity on flap fix, be installed with guide finger on the other end of valve handle, offer on the end of valve rod with valve handle on the guide finger spiral guide shaft groove that cooperates of slippage mutually; Be equipped with handwheel on the other end of valve rod; Be arranged with valve gap and rack tube on the valve rod, valve gap and rack tube fix, and are provided with seal ring between rack tube and the valve rod; Also be arranged with the bellows that fixes and be tightly connected with valve gap on the valve rod, described bellows and valve rod also fix and are sealed and matched.
The beneficial effect of the utility model is: adopt said structure; Because the utility model adopts the fixed seal connection of bellows and valve gap and valve rod to realize the sealing between valve rod and the valve gap; Static seal is changed in motive sealing between valve rod in the existing technology and the valve gap; Improve sealing reliability between valve rod and the valve gap, prolong the working life of butterfly valve.
The circumferential surface that the utility model can further be set to said valve rod is provided with axial line channel; Rack tube be provided with valve rod on the axial line channel directional bond that cooperates of slippage guiding mutually, also be arranged with the Stem Mut that radially flexibly connects axial restraint on the described valve rod.
Description of drawings
Fig. 1 is the structure sectional view of the utility model.
Embodiment
As shown in Figure 1ly provided a kind of butterfly valve; Comprise valve body 1, flap 2, valve rod 3, bellows 4, valve gap 5, rack tube 6, handwheel 7, valve handle 10, flap 2 is located on valve body 1 inner chamber, and an end of valve handle 10 is located in the valve body 1 and the flap 2 on valve body 1 inner chamber fixes; Be installed with guide finger 101 on the other end of valve handle 10; Offer on one end of valve rod 3 with valve handle 10 on the guide finger 101 spiral guide shaft groove that cooperates of slippage mutually, be equipped with handwheel 7 on the other end of valve rod 3, be arranged with valve gap 5 and rack tube 6 on the valve rod 3; Valve gap 5 and rack tube 6 welding; Be provided with seal ring 8 between rack tube 6 and the valve rod 3, also be arranged with the bellows 4 that fixes and be tightly connected with valve gap 5 on the valve rod 3, described bellows 4 also fixes with valve rod 3 and is sealed and matched.The circumferential surface of said valve rod 3 is provided with axial line channel 31, rack tube 6 be provided with valve rod 3 on axial line channel 31 directional bond 61 that cooperates of slippage guiding mutually, also be arranged with the Stem Mut 9 that radially flexibly connects axial restraint on the described valve rod 3.
The working procedure of the utility model is following: rotation hand wheel 7 drives Stem Mut 9 then does not move; Make valve rod 3 produce axially straight line motion up and down; Because packing into, directional bond 61 in the line channel 31 of valve rod 3,, can only move up and down so valve rod 3 can not produce the circumference transposition; At this moment guide finger 101 inserts in the spiral guide shaft groove of valve rod 3 simultaneously; So guide finger 101 drives valve handle 10 and makes circular movement along Hand of spiral, valve handle 10 drives flaps 2 and accomplishes 90 degree and rotatablely move, and has realized the keying function of butterfly valve.
Adopt said structure; Because the utility model adopts the fixed seal connection of bellows 4 and valve gap 5 and valve rod 3 to realize the sealing between valve rod 3 and the valve gap 5; Static seal is changed in motive sealing between valve rod in the existing technology 3 and the valve gap 5; Improve sealing reliability between valve rod 3 and the valve gap 5, prolong the working life of butterfly valve.
Claims (2)
1. butterfly valve; It is characterized in that: comprise valve body, flap, valve rod, bellows, valve gap, rack tube, handwheel, valve handle, flap is located on the body cavity, and an end of valve handle is located in the valve body and the flap on the body cavity fixes; Be installed with guide finger on the other end of valve handle; Offer on one end of valve rod with valve handle on the guide finger spiral guide shaft groove that cooperates of slippage mutually, be equipped with handwheel on the other end of valve rod, be arranged with valve gap and rack tube on the valve rod; Valve gap and rack tube fix; Be provided with seal ring between rack tube and the valve rod, also be arranged with the bellows that fixes and be tightly connected with valve gap on the valve rod, described bellows and valve rod also fix and are sealed and matched.
2. butterfly valve according to claim 1; It is characterized in that: the circumferential surface of said valve rod is provided with axial line channel; Rack tube be provided with valve rod on the axial line channel directional bond that cooperates of slippage guiding mutually, also be arranged with the Stem Mut that radially flexibly connects axial restraint on the described valve rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202267790U CN202118272U (en) | 2011-06-30 | 2011-06-30 | Butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202267790U CN202118272U (en) | 2011-06-30 | 2011-06-30 | Butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202118272U true CN202118272U (en) | 2012-01-18 |
Family
ID=45459339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202267790U Expired - Fee Related CN202118272U (en) | 2011-06-30 | 2011-06-30 | Butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202118272U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105546128A (en) * | 2016-01-14 | 2016-05-04 | 北京市阀门总厂股份有限公司 | High-temperature butterfly valve for molten salt used for solar thermal electric power generation |
-
2011
- 2011-06-30 CN CN2011202267790U patent/CN202118272U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105546128A (en) * | 2016-01-14 | 2016-05-04 | 北京市阀门总厂股份有限公司 | High-temperature butterfly valve for molten salt used for solar thermal electric power generation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120118 Termination date: 20180630 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |