CN206889695U - A kind of eccentric-butterfly-valve - Google Patents
A kind of eccentric-butterfly-valve Download PDFInfo
- Publication number
- CN206889695U CN206889695U CN201720342496.XU CN201720342496U CN206889695U CN 206889695 U CN206889695 U CN 206889695U CN 201720342496 U CN201720342496 U CN 201720342496U CN 206889695 U CN206889695 U CN 206889695U
- Authority
- CN
- China
- Prior art keywords
- valve
- butterfly plate
- butterfly
- obtuse angle
- valve base
- 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
A kind of eccentric-butterfly-valve, including butterfly plate, upper valve base, lower valve base, valve shaft；Valve shaft fixes butterfly plate in the bottom of butterfly plate center line and butterfly plate side；Upper valve base, lower valve base integration, drive valve shaft and butterfly plate to open or close on valve seat provided with handle；During butterfly plate valve closing position, be equipped with corresponding upper valve base, lower valve base cross section be obtuse angle shape stop, this obtuse angle shape stop by cross section be rectangle butterfly plate it is spacing；And when the import of valve is in right, shelves live the right of butterfly plate to obtuse angle shape stop to upper valve base obtuse angle shape stop on the right on the left side of butterfly plate, lower valve base；And the obtuse angle of butterfly plate is identical for the angle at the stop obtuse angle of obtuse angle shape with cross section.
Description
Technical field
It the utility model is related to a kind of butterfly valve, especially eccentric-butterfly-valve.
Background technology
Double eccentric butterfly valve is current most widely used double eccentric butterfly valve；Butterfly plate center or inclined was both deviateed in valve rod axle center
From body central.Double eccentric effects enable valve opened after butterfly plate immediately depart from valve seat, significantly eliminate butterfly plate with
The unnecessary excessive compression of valve seat, scrape phenomenon, alleviate unlatching resistance away from, reduce abrasion, improve longer seat life.Scrape
Be greatly lowered and meanwhile also so that double eccentric butterfly valve can also use metal seat valve, improve butterfly valve high-temperature field should
With.But because the sealing surface of its sealing principle category position seals construction, i.e. butterfly plate and valve seat is linear contact lay, passes through butterfly plate squeezing valve
Elastic deformation caused by seat produces sealing effectiveness therefore requires closed position very high (particularly metal seat valve), bearing capacity
It is low, here it is why traditionally it is believed that butterfly valve is high pressure resistant, leakage rate is big.
Existing three-eccentric-butterfly-valve wants high temperature resistant, must use hard sealing but leakage rate is big；Want zero leakage, must use
Soft seal, but non-refractory.It is eccentric to overcome this contradiction of double eccentric butterfly valve and third time having been carried out to butterfly valve.Its structure is special
Levy for while double eccentric valve rod shaft core position bias, make the pyramid type axis deviation of butterfly plate sealing surface in body cylinder axis
Line, that is, after third time is eccentric, the sealing section of butterfly plate is no longer proper circle but ellipse, its sealing surface shape
Therefore it is asymmetric, while favouring body central line, another side then parallel to body central line.The eccentric maximum of this third time
Feature is exactly fundamentally to change seal construction, be no longer position seals but torsion sealing, do not rely on the bullet of valve seat
Property deformation but fully rely on the contact face pressure of valve seat to reach sealing effectiveness.Such as 201610392530 are related to butterfly valve structure i.e.
A kind of eccentric-butterfly-valve, valve seat are provided with cammed surface, and undue compress is unfavorable for opening.
Utility model content
The purpose of the utility model is to propose a kind of eccentric-butterfly-valve, preferably solves metal seat valve zero leakage problem, also will not
It is directly proportional, high pressure resistant high temperature because contacting face pressure to pressure medium, and is also easy to open.
Technical solutions of the utility model are：A kind of eccentric-butterfly-valve, including butterfly plate, upper valve base, lower valve base, valve shaft；Valve shaft exists
The bottom of butterfly plate center line and butterfly plate side fixation butterfly plate；Upper valve base, lower valve base integration, drive valve shaft and butterfly plate to exist provided with handle
Open or close on valve seat；During butterfly plate valve closing position, the stop that cross section is obtuse angle shape is equipped with corresponding upper valve base, lower valve base,
This obtuse angle shape stop by cross section be rectangle butterfly plate it is spacing；And when the import of valve is in right, upper valve base obtuse angle shape stop
On the left side of butterfly plate, shelves live the right of butterfly plate to obtuse angle shape stop on the right on lower valve base；And the obtuse angle of butterfly plate is blunt with cross section
The angle at angular stop obtuse angle is identical.
The utility model beneficial effect：The utility model makes the axis center of butterfly plate bias certain angle, and axle is at side
Triple eccentric seat sealing system is formed, so as to eliminate mechanical wear and the scratch when butterfly valve opens and closes between two sealing surfaces, reduces drive
Kinetic moment.Preferably solve metal seat valve zero leakage problem, also will not be directly proportional, resistance to height because contacting face pressure to pressure medium
Super pressure-high temperature, and be also easy to open.
Brief description of the drawings
Fig. 1 is prior art construction schematic diagram.
Fig. 2 is the utility model structure diagram.
Fig. 3 is the enlarged drawing in Fig. 2 roundlets region.
Embodiment
As illustrated, three-eccentric-butterfly-valve, including butterfly plate 3, upper valve base 1, lower valve base 2, valve shaft 4；The eccentric fixation butterfly of valve shaft 4
Plate 1；Upper valve base 1, the integration of lower valve base 2, drive valve shaft 4 to drive butterfly plate 1 to be opened on valve seat again by handle (being not drawn into figure)
Or close (butterfly plate to the right or turn left).Being equipped with section during 3 valve closing position of butterfly plate, on corresponding upper valve base 1, lower valve base 2 is
Section is equally that the butterfly plate of rectangle is spacing by obtuse angle shape stop, this obtuse angle shape stop, i.e., when being turned left counterclockwise in figure to the end
When be that valve is closed in position in figure, the eccentric position of valve shaft 4 is in center line bottom, and when the import of valve is in right, the obtuse angle shape of upper valve base 1 is stopped
Shelves live the right 5 of butterfly plate to obtuse angle shape stop 6 to shelves on the right on the left side of butterfly plate, lower valve base 2.Butterfly plate is by the inverse time under stress
The unbalanced pressure of pin tends to fasten on valve, forms sealing surface, and will not be influenceed in valve opening by tiltedly splitting.
And if when the import of valve is in left, the obtuse angle shape stop of upper valve base 1 should be on the right of butterfly plate, lower valve base 2
Shelves live the left side 5 of butterfly plate to upper obtuse angle shape stop 6 on the right.Under stress butterfly plate by clockwise unbalanced pressure tend to by
Valve is fastened, and forms sealing surface, and will not be influenceed in valve opening by tiltedly splitting.
Structure of the present utility model is that, when butterfly plate 3 is circular, the upper half circle cross-section of upper valve base 1 crosses butterfly plate center of circle line
Shi Junwei obtuse angles shape stop, the lower half circle of lower valve base 2 are obtuse angle shape stop.
Wherein the thickness of butterfly plate is 3-12mm；Butterfly plate edge is 2-6mm with the length that overlaps of stop on valve seat.
Claims (3)
- A kind of 1. eccentric-butterfly-valve, it is characterized in that including butterfly plate, upper valve base, lower valve base, valve shaft；Valve shaft in the bottom of butterfly plate center line and Butterfly plate is fixed in butterfly plate side；Upper valve base, lower valve base integration, drive valve shaft and butterfly plate to open or close on valve seat provided with handle；Butterfly During plate valve closing position, the stop that cross section is obtuse angle shape is equipped with corresponding upper valve base, lower valve base, this obtuse angle shape stop is by horizontal stroke Section is that the butterfly plate of rectangle is spacing；And when the import of valve is in right, upper valve base obtuse angle shape stop is in the left side of butterfly plate, lower valve Shelves live the right of butterfly plate to obtuse angle shape stop on the right on seat；And angle of the obtuse angle of butterfly plate with cross section for the stop obtuse angle of obtuse angle shape Spend identical.
- 2. eccentric-butterfly-valve according to claim 1, it is characterized in that wherein the thickness of butterfly plate is 3-12mm.
- 3. eccentric-butterfly-valve according to claim 1, it is characterized in that butterfly plate edge is 2- with the length that overlaps of stop on valve seat 6mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720342496.XU CN206889695U (en) | 2017-04-01 | 2017-04-01 | A kind of eccentric-butterfly-valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720342496.XU CN206889695U (en) | 2017-04-01 | 2017-04-01 | A kind of eccentric-butterfly-valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206889695U true CN206889695U (en) | 2018-01-16 |
Family
ID=61327404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720342496.XU Expired - Fee Related CN206889695U (en) | 2017-04-01 | 2017-04-01 | A kind of eccentric-butterfly-valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206889695U (en) |
-
2017
- 2017-04-01 CN CN201720342496.XU patent/CN206889695U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180116 Termination date: 20190401 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |