CN207093792U - A kind of three-eccentric-butterfly-valve - Google Patents
A kind of three-eccentric-butterfly-valve Download PDFInfo
- Publication number
- CN207093792U CN207093792U CN201720341257.2U CN201720341257U CN207093792U CN 207093792 U CN207093792 U CN 207093792U CN 201720341257 U CN201720341257 U CN 201720341257U CN 207093792 U CN207093792 U CN 207093792U
- Authority
- CN
- China
- Prior art keywords
- valve
- butterfly plate
- butterfly
- valve base
- eccentric
- 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
Landscapes
- Lift Valve (AREA)
Abstract
Three-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 square stop, this square 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 square stop to upper valve base square stop on the right on the left side of butterfly plate, lower valve base.
Description
Technical field
It the utility model is related to a kind of butterfly valve, especially three-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 three-eccentric-butterfly-valve, preferably solves metal seat valve zero leakage problem, also not
It can be directly proportional, high pressure resistant high temperature because contacting face pressure to pressure medium, and be also easy to open.
Technical solutions of the utility model are：Three-eccentric-butterfly-valve, including butterfly plate, upper valve base, lower valve base, valve shaft；Valve shaft is in butterfly
The bottom of plate center line and butterfly plate side fixation butterfly plate；Upper valve base, lower valve base integration, valve shaft and butterfly plate are driven in valve provided with handle
Open or close on seat；During butterfly plate valve closing position, the stop that cross section is square is equipped with corresponding upper valve base, lower valve base, this
Cross section is equally that the butterfly plate of rectangle is spacing by square stop；And when the import of valve is in right, upper valve base square stops
Shelves live the right of butterfly plate to square stop to shelves on the right on the left side of butterfly plate, lower valve base.
The utility model beneficial effect：Three-eccentric-butterfly-valve is to make the axis center of butterfly plate inclined on the basis of double eccentric butterfly valve
Put certain angle, form triple eccentric seat sealing system, so as to eliminate mechanical wear when butterfly valve opens and closes between two sealing surfaces and
Scratch, reduces driving moment.Preferably solve metal seat valve zero leakage problem, also will not be with pressure medium because of contact face pressure
Directly proportional, high pressure resistant 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.
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 square stop, this square 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 square of upper valve base 1 stops
Shelves live the right 5 of butterfly plate to square 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 square 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 square 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 squares stop, the lower half circle of lower valve base 2 are square stop.Wherein the thickness of butterfly plate is 3-12mm；Butterfly plate edge
The length that overlaps with stop on valve seat is 2-6mm.
Claims (3)
1. three-eccentric-butterfly-valve, it is characterized in that including butterfly plate, upper valve base, lower valve base, valve shaft；Valve shaft is in the bottom of butterfly plate center line and butterfly
Butterfly plate is fixed in 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 plate
During valve closing position, the stop that cross section is square is equipped with corresponding upper valve base, lower valve base, this square stop will be transversal
Face is that the butterfly plate of rectangle is spacing；And when the import of valve is in right, upper valve base square stop is in the left side of butterfly plate, lower valve base
Shelves live the right of butterfly plate to upper square stop on the right.
2. three-eccentric-butterfly-valve according to claim 1, it is characterized in that wherein the thickness of butterfly plate is 3-12mm.
3. three-eccentric-butterfly-valve according to claim 1, it is characterized in that butterfly plate edge is with the length that overlaps of stop on valve seat
2-6mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720341257.2U CN207093792U (en) | 2017-04-01 | 2017-04-01 | A kind of three-eccentric-butterfly-valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720341257.2U CN207093792U (en) | 2017-04-01 | 2017-04-01 | A kind of three-eccentric-butterfly-valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207093792U true CN207093792U (en) | 2018-03-13 |
Family
ID=61546724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720341257.2U Expired - Fee Related CN207093792U (en) | 2017-04-01 | 2017-04-01 | A kind of three-eccentric-butterfly-valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207093792U (en) |
-
2017
- 2017-04-01 CN CN201720341257.2U patent/CN207093792U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206159518U (en) | Gate valve with lift buffer function | |
| CN207093792U (en) | A kind of three-eccentric-butterfly-valve | |
| CN103591307A (en) | Triple eccentric metal hard sealing butterfly valve | |
| CN208074198U (en) | A kind of easy-to-mount leakproofness shut-off valve | |
| CN206889695U (en) | A kind of eccentric-butterfly-valve | |
| CN206246691U (en) | A kind of corrosion resistant through type Fluorine-lined stop valve of security seal | |
| CN209245268U (en) | A kind of butterfly valve plate | |
| CN204647383U (en) | Super large caliber release pollution discharge type one-way sealing gate valve | |
| CN217736294U (en) | High-strength wafer type sealing butterfly valve | |
| CN206017844U (en) | A kind of Fixed ball valve | |
| CN110848429A (en) | Cut-off double-purpose valve | |
| CN107906212A (en) | A kind of bias butterfly spring valve | |
| CN207349474U (en) | A kind of wedge action valve of stabilized seal | |
| CN204828735U (en) | Promotion formula floodgate plug valve sealed firmly | |
| CN207814490U (en) | A kind of general seal gate valve | |
| CN203322297U (en) | Elastic self-sealing butterfly valve | |
| CN203009855U (en) | Internal-pressure self-sealing type valve cover stop valve | |
| CN205298596U (en) | Stop valve | |
| CN211423424U (en) | Double-valve-plate gate valve for pneumatic conveying system | |
| CN205715737U (en) | A kind of New type detachable gate valve | |
| CN204900890U (en) | Oval flashboard slip gate valve | |
| CN204083380U (en) | A kind of butterfly shaped check valve | |
| CN206054912U (en) | A kind of prolonged type stop valve | |
| CN208734918U (en) | A kind of high-heat and high-pressure valve croquet body | |
| CN211398737U (en) | Stainless steel elastic sealing gate valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180313 Termination date: 20190401 |