CN108895167A - A kind of double eccentric butterfly valve - Google Patents
A kind of double eccentric butterfly valve Download PDFInfo
- Publication number
- CN108895167A CN108895167A CN201810739757.0A CN201810739757A CN108895167A CN 108895167 A CN108895167 A CN 108895167A CN 201810739757 A CN201810739757 A CN 201810739757A CN 108895167 A CN108895167 A CN 108895167A
- Authority
- CN
- China
- Prior art keywords
- valve
- valve plate
- valve rod
- sealing
- double 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/222—Shaping of the valve member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/226—Shaping or arrangements of the sealing
- F16K1/2261—Shaping or arrangements of the sealing the sealing being arranged on the valve member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
- F16K27/0218—Butterfly valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The present invention provides a kind of double eccentric butterfly valve, the valve body including valve rod, valve plate and inner hollow；The valve plate is mounted on the valve inner, also, the outer ring of the valve plate is embedded with a sealing ring around the valve plate outer ring, and the valve plate forms sealing pair by the inner wall of the sealing ring and the valve body；The valve rod is connect with the valve plate, and the valve rod can rotate and to drive the valve plate to rotate around the valve rod, so that the double eccentric butterfly valve opens or closes；The inner wall of the valve body uses airflow design with the connecting portion of the valve plate and the part of the close connecting portion at it.The present invention provides a kind of double eccentric butterfly valves can substantially reduce the flow resistance of fluid flowing by the airflow design of valve interior wall.Also, valve plate equally uses airflow design, can further decrease flow resistance.
Description
Technical field
The invention belongs to valve technology fields, are related to a kind of double eccentric butterfly valve.
Background technique
A kind of simple regulating valve of structure of butterfly valve, can be used for the switch control of low pressure pipeline medium, and butterfly valve refers to closure member
(flap or butterfly plate) is disk, and a kind of valve of open and close is reached around valve shaft rotation.Butterfly valve can be used for controlling air,
The flowing of the various types fluids such as water, steam, various corrosive medias, mud, oil product, liquid metal and radiating medium,
Cutting and throttling action are mainly played on pipeline.Butterfly valve opening and closing element is a discoidal butterfly plate, around the axis of its own in valve body
Line rotation, to achieve the purpose that opening and closing or adjusting.
Double eccentric butterfly valve is a kind of butterfly valve being most widely used at present, and butterfly plate center or partially had both been deviateed in valve rod axle center
Valve from body central.The effect of double bias enables valve to be turned on rear butterfly plate to be immediately detached from valve seat, significantly eliminate
The unnecessary excessive compression of butterfly plate and valve seat, scrape phenomenon, alleviate unlatching resistance away from, reduce abrasion, improve the valve seat longevity
Life, also, what is scraped is greatly lowered while also making double eccentric butterfly valve that can also use metal seat valve, improve butterfly valve and exist
The application of high-temperature field.
Double eccentric butterfly valve in the prior art, body cavity is generally conventional cylindrical cavity, in the connection of valve plate
Position, flow resistance are larger；And there is no special designs for the structure of the valve plate of butterfly valve, in actual use, when butterfly valve opening, valve
Plate can generate certain flow resistance to fluid, so that the pressure of fluid has certain loss.Moreover, its valve rod of the butterfly valve of the prior art and
It is generally designed using pin connection between valve plate, pin is easy to fall or be broken in use process, and also gets rusty easily at pin hole, shadow
Ring the normal use of valve.Also, the sealing between its valve plate of existing butterfly valve and valve body mostly uses valve plate and is embedded on valve body
Sealing ring between form sealing pair, when the pressure difference of valve plate two sides is excessive, sealing effect is simultaneously bad, is easy to produce and lets out
Dew.
Summary of the invention
It is an object of the present invention to provide a kind of double eccentric butterfly valves, to reduce the stream of valve inner when butterfly valve is opened
The flow resistance of body flowing.
Another object of the present invention is to provide a kind of double eccentric butterfly valves, and with solution, butterfly valve is connected using pin in the prior art
When connecing, pin is easily broken off or falls the problem of leading to valve body failure.
It is a further object of the present invention to provide a kind of double eccentric butterfly valves, solve in the prior art when the valve plate of butterfly valve two
The problem of sealing effect is bad when side pressure difference is excessive, is easy leakage.
In order to solve the above technical problems, the present invention provides a kind of double eccentric butterfly valve, including valve rod, valve plate and inner hollow
Valve body；The valve plate is mounted on the valve inner, also, the outer ring of the valve plate is embedded with one around the valve plate outer ring
Sealing ring, the valve plate forms sealing pair by the inner wall of the sealing ring and the valve body；The valve rod and the valve plate
Connection, the valve rod can rotate and to drive the valve plate to rotate around the valve rod, so that the double eccentric butterfly valve is opened
Or it closes；The inner wall of the valve body uses streamline with the connecting portion of the valve plate and the part of the close connecting portion at it
Type design.
Further, the valve plate uses airflow design.
Further, the valve rod includes the first valve rod and the second valve rod, and the first aperture and the are offered on the valve plate
Two apertures, one end of second valve rod are fixed on the valve inner, and the other end protrudes the inner wall of the valve body, the valve plate
It is sheathed on second valve rod by second aperture and is rotatablely connected with second valve rod；First valve rod runs through
The inner wall of the valve body, one end are set in the first aperture of the valve plate, and the other end with a power device for connecting；Institute
State the first valve rod and second valve rod on the same line；The power device is for driving first valve rod to rotate, institute
Stating the rotation of the first valve rod drives the valve plate to rotate around second valve rod.
Further, second aperture is circular hole, and second valve rod is cylinder, with the second aperture phase
Match, so that the valve plate can be rotated around second valve rod；First aperture is non-circular hole, the shape of first valve rod
Shape and the shape of first aperture match, so that first valve rod is able to drive the valve plate rotation when rotating.
Further, the cross-sectional shape of first aperture is ellipse, polygon or irregular shape.
Preferably, the cross-sectional shape of the shape of first aperture is rectangular, and first valve rod is opened with described first
The junction in hole is the square head to match with the first rectangular aperture.
Further, the valve plate includes valve plate body and compressing member, the outer ring of the valve plate body offer with it is described
Sealing ring compression is installed in the groove by the groove that sealing loop-shaped matches, the compressing member, the compressing member
It is fixedly connected with the valve plate body.
Further, the compressing member is connect with the valve plate body screw.
Further, the sealing ring includes the ontology of circular ring shape and the sealing around circular ring shape ontology outer ring
The circular ring shape ontology compression of the sealing ring is installed in the groove by item, the compressing member, described in the sealing strip protrusion
The outer ring of valve plate body, when the double eccentric butterfly valve is closed, the valve plate is close by the sealing strip and the valve interior wall
Cover forms sealing pair.
Further, the flow direction of the sealing surface of valve interior wall fluid along butterfly valve, internal diameter are gradually reduced.
Further, the sealing strip is zigzag sealing strip.
Compared with prior art, the present invention provides a kind of double eccentric butterfly valves can by the airflow design of valve interior wall
To substantially reduce the flow resistance of fluid flowing.Also, valve plate equally uses airflow design, can further decrease flow resistance,
So that the negotiability of butterfly valve is stronger compared with the negotiability of the butterfly valve product of same type in the prior art.In addition, the present invention is also logical
The optimization of the sealing to valve plate and valve interior wall is crossed, by the way that the sealing ring with sealing strip is embedded in valve plate outer ring, in valve body
Wall forms sealing pair, and sealing effect is more preferable.Also, structure optimization is carried out by the sealing surface to valve interior wall, so that valve plate two
The pressure difference of side is bigger, and sealing ring is pressed tighter, solves in the prior art due to the excessive bring sealing of valve plate two sides pressure difference
Ineffective problem.Moreover, the connection between valve rod and valve plate of the invention, has abandoned the pin connection of the prior art, has passed through
First valve rod directly drives valve plate to rotate around the second valve rod, and avoiding that pin in the prior art falls off or be broken caused butterfly valve can not
The defect of normal work.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the double eccentric butterfly valve that one embodiment of the invention provides；
Fig. 2 is the side structure schematic view for the double eccentric butterfly valve that one embodiment of the invention provides.
Wherein, 1- valve rod；2- valve plate；3- valve body；4- sealing ring；The first valve rod of 11-；The second valve rod of 12-；21- first is opened
Hole；The second aperture of 22-；23- valve plate body；24- compressing member；41- circular ring shape ontology；42- sealing strip.
Specific embodiment
A kind of double eccentric butterfly valve proposed by the present invention is described in further detail below in conjunction with the drawings and specific embodiments.
According to following explanation and claims, advantages and features of the invention will be become apparent from.It should be noted that attached drawing is all made of very
Simplified form and non-accurate ratio is used, only for the purpose of facilitating and clarifying the purpose of the embodiments of the invention.
Fig. 1 is a kind of schematic diagram for double eccentric butterfly valve that one embodiment of the invention provides.Fig. 2 is that one embodiment of the invention mentions
A kind of side structure schematic view of the double eccentric butterfly valve supplied.Please refer to Fig. 1 and Fig. 2, a kind of double eccentric butterfly valve, including valve rod 1, valve
Plate 2 and the valve body of inner hollow 3；The valve plate 2 is mounted on inside the valve body 3, also, the outer ring of the valve plate 2 is embedded with
One surround the sealing ring 4 of 2 outer ring of valve plate, and the valve plate 2 is formed close by the inner wall of the sealing ring 4 and the valve body 3
Envelope is secondary；The valve rod 1 is connect with the valve plate 2, and the valve rod 1 can rotate and to drive the valve plate 2 around the valve rod 1
Rotation, so that the double eccentric butterfly valve opens or closes；The inner wall of the valve body 3 in its connecting portion with the valve plate 2 and
Airflow design is used close to the part of the connecting portion.In the present solution, the company for passing through inner wall and valve plate 2 in valve body 3
Socket part position and the part of close connecting portion use airflow design, can substantially reduce the flow resistance of fluid at connecting portion.
It is furthermore preferred that the valve plate 2 can equally use streamline in order to further decrease valve plate 2 for the resistance of fluid
Type design, further decreases fluid resistance, reduces the pressure loss of fluid.
In one embodiment of the invention, the valve rod 1 may include the first valve rod 11 and the second valve rod 12, described
The first aperture 21 and the second aperture 22 are offered on valve plate 2, one end sealing of second valve rod 12 is fixed in the valve body 3
Portion, the other end protrude the inner wall of the valve body 3, and the valve plate 2 is sheathed on second valve rod 12 by second aperture 22
Above and with second valve rod 12 it is rotatablely connected；First valve rod 11 through the valve body 3 inner wall and with the valve body 3
Inner wall sealing, one end are set in the first aperture 21 of the valve plate 2, and the other end with a power device in figure for (not marking
It connects out)；Wherein, first valve rod 11 and second valve rod 12 on the same line, can guarantee turning for valve plate 2 in this way
Axis is unique；For the power device for driving first valve rod 11 to rotate, the rotation of the first valve rod 11 drives the valve plate 2
It is rotated around second valve rod 12.In the solution of the present invention, the pin connection design of the prior art is abandoned, has directlyed adopt first
The rotation of valve rod 11 drives the valve plate 2 to rotate around second valve rod 12, in this way the risk there will be no pin fracture, service life
It is longer.
It rotates, makees around second valve rod 12 in order to be able to drive the valve plate 2 when guaranteeing first valve rod 11 rotation
For a kind of implementation of the invention, second aperture 22 is circular hole, and second valve rod 12 is cylinder, with described the
Two apertures 22 match, so that the valve plate 2 can be rotated around second valve rod 12；First aperture 21 is non-circular
Hole, the shape of first valve rod 11 and the shape of first aperture 21 match, when so that first valve rod 11 rotating
The valve plate 2 is able to drive to rotate.Wherein, the cross-sectional shape of first aperture 21 can be for ellipse, polygonal such as
Triangle, rectangle, diamond shape, pentagon etc. are also possible to other irregular shapes, as long as guarantee first valve rod 11 rotation,
The valve plate 2 is able to drive to rotate synchronously.
As a preferred solution of the present invention, first aperture 21 is rectangular, corresponding, the shape of first valve rod 11
Shape is square head, and first valve rod 11 of square head is inserted into first aperture 21, and gap between the two is smaller, can
Preferably to transmit torque, and idle stroke will not be generated.
Further, the valve plate 2 includes valve plate body 23 and compressing member 24, and the outer ring of the valve plate body 23 offers
The sealing ring 4 compression is installed in the groove by the groove to match with 4 shape of sealing ring, the compressing member 24,
The compressing member 24 is fixedly connected with the valve plate body 23, such as can be connected using screw.
In order to guarantee the sealing effect of sealing ring 4 Yu valve interior wall, as a preferred solution of the present invention, the sealing
Circle 4 includes the ontologies 41 of circular ring shape and the sealing strip 42 around 41 outer ring of circular ring shape ontology, and the compressing member 24 is by institute
The compression of circular ring shape ontology 41 for stating sealing ring 4 is installed in the groove, outside the prominent valve plate body of the sealing strip 42
Circle, when the double eccentric butterfly valve is closed, the valve plate 2 is formed close by the sealing surface of the sealing strip 42 and the valve interior wall
Envelope is secondary, and compared with traditional valve plate passes through and be embedded in the sealing ring sealing of valve interior wall, sealing strip 42 is separately provided in the present invention,
Sealing effect can be made more preferable.
Also, in order to further ensure sealing effect, prevent from causing to reveal because the pressure difference of 2 two sides of valve plate is excessive, in this hair
In bright design scheme, the flow direction of the sealing surface of valve interior wall fluid along butterfly valve, internal diameter is gradually reduced.This
Sample, when butterfly valve is closed, fluid can generate extruding, since the internal diameter of sealing surface is gradually reduced, such sealing strip to valve plate 2
It the more will be pressed the more tight, even if the pressure difference of 2 two sides of valve plate is very big, leakage phenomenon will not be generated.Preferably, described close
Strip of paper used for sealing 42 can be zigzag sealing strip, and the extending direction of the sawtooth of zigzag strip of paper used for sealing can be any, either around sealing
The outer ring of circle 4 is rectangular, can also the vertical circular direction, can also be opened up with form an angle around direction.
In the solution of the present invention, the material of the sealing ring 4 can be profile rubber seal, and sealing strip can be ring
Oxygen coating can carry out coating using wear-resistant material at the sealing surface of the inner wall of valve body 3.
In conclusion the present invention provides a kind of double eccentric butterfly valve, it, can be significantly by the airflow design of valve interior wall
Reduce the flow resistance of fluid flowing.Also, valve plate equally uses airflow design, can further decrease flow resistance, so that butterfly
The negotiability of valve is stronger compared with the negotiability of the butterfly valve product of same type in the prior art.In addition, the present invention is also by valve
The sealing of plate and valve interior wall optimizes, and by the way that the sealing ring with sealing strip is embedded in valve plate outer ring, is formed with valve interior wall
Sealing pair, sealing effect are more preferable.Also, structure optimization is carried out by the sealing surface to valve interior wall, so that the pressure of valve plate two sides
Difference it is bigger, sealing ring is pressed tighter, solve in the prior art due to the excessive bring sealing effect of valve plate two sides pressure difference not
Good problem.Moreover, the connection between valve rod and valve plate of the invention, has abandoned the pin connection of the prior art, pass through the first valve
Bar directly drives valve plate to rotate around the second valve rod, and avoiding that pin in the prior art falls off or be broken caused butterfly valve can not normal work
The defect of work.
Foregoing description is only the description to present pre-ferred embodiments, not to any restriction of the scope of the invention, this hair
Any change, the modification that the those of ordinary skill in bright field does according to the disclosure above content, belong to the protection of claims
Range.
Claims (10)
1. a kind of double eccentric butterfly valve, which is characterized in that the valve body including valve rod, valve plate and inner hollow；
The valve plate is mounted on the valve inner, also, the outer ring of the valve plate is embedded with one around the valve plate outer ring
Sealing ring, the valve plate form sealing pair by the inner wall of the sealing ring and the valve body；
The valve rod is connect with the valve plate, and the valve rod can rotate and to drive the valve plate to rotate around the valve rod,
So that the double eccentric butterfly valve opens or closes；
The inner wall of the valve body its connecting portion with the valve plate and close to the part of the connecting portion using streamlined
Design.
2. a kind of double eccentric butterfly valve according to claim 1, which is characterized in that the valve plate uses airflow design.
3. a kind of double eccentric butterfly valve according to claim 1, which is characterized in that the valve rod includes the first valve rod and second
Valve rod offers the first aperture and the second aperture on the valve plate, and one end of second valve rod is fixed on the valve inner,
The other end protrudes the inner wall of the valve body, the valve plate be sheathed on second valve rod by second aperture and with it is described
The rotation connection of second valve rod；
First valve rod runs through the inner wall of the valve body, and one end is set in the first aperture of the valve plate, and the other end is used
It is connect in a power device；
First valve rod and second valve rod are on the same line；
For the power device for driving first valve rod to rotate, the first valve rod rotation drives the valve plate around described the
The rotation of two valve rods.
4. a kind of double eccentric butterfly valve according to claim 3, which is characterized in that second aperture is circular hole, described the
Two valve rods are cylinder, are matched with second aperture, so that the valve plate can be rotated around second valve rod；
First aperture is non-circular hole, and the shape of first valve rod and the shape of first aperture match, so that
First valve rod is able to drive the valve plate rotation when rotating.
5. a kind of double eccentric butterfly valve according to claim 4, which is characterized in that the cross-sectional shape of first aperture is
Ellipse, polygon or irregular shape.
6. a kind of double eccentric butterfly valve according to claim 5, which is characterized in that the cross section of the shape of first aperture
Shape be it is rectangular, the junction of first valve rod and first aperture is four to match with the first rectangular aperture
Square toes.
7. a kind of double eccentric butterfly valve according to claim 1, which is characterized in that the valve plate includes valve plate body and compression
Part, the outer ring of the valve plate body offer with the groove that matches of sealing loop-shaped, the compressing member is by the sealing
Circle is compressed and is installed in the groove, and the compressing member is fixedly connected with the valve plate body.
8. a kind of double eccentric butterfly valve according to claim 7, which is characterized in that the sealing ring includes the ontology of circular ring shape
And the circular ring shape ontology of the sealing ring is compressed installation by the sealing strip around circular ring shape ontology outer ring, the compressing member
In the groove, the outer ring of the prominent valve plate body of the sealing strip, when the double eccentric butterfly valve is closed, the valve plate is logical
The sealing surface for crossing the sealing strip and the valve interior wall forms sealing pair.
9. a kind of double eccentric butterfly valve according to claim 8, which is characterized in that the sealing surface of the valve interior wall is along butterfly valve
The flow direction of interior fluid, internal diameter are gradually reduced.
10. a kind of double eccentric butterfly valve according to claim 8, which is characterized in that the sealing strip is zigzag sealing strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810739757.0A CN108895167A (en) | 2018-07-06 | 2018-07-06 | A kind of double eccentric butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810739757.0A CN108895167A (en) | 2018-07-06 | 2018-07-06 | A kind of double eccentric butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108895167A true CN108895167A (en) | 2018-11-27 |
Family
ID=64348129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810739757.0A Pending CN108895167A (en) | 2018-07-06 | 2018-07-06 | A kind of double eccentric butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108895167A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113775768A (en) * | 2021-09-26 | 2021-12-10 | 上海双高阀门(集团)有限公司 | Lever type butterfly valve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB873117A (en) * | 1957-12-03 | 1961-07-19 | White & Co Ltd Samuel | Improvements in butterfly valves |
| GB2034442A (en) * | 1978-10-26 | 1980-06-04 | Klein Schanzlin & Becker Ag | Butterfly valve |
| CN201053507Y (en) * | 2007-06-14 | 2008-04-30 | 施荣礼 | Interference hard seal butterfly valve |
| CN105757262A (en) * | 2014-12-17 | 2016-07-13 | 天津鹏信科技发展有限公司 | Novel clamp type butterfly valve |
-
2018
- 2018-07-06 CN CN201810739757.0A patent/CN108895167A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB873117A (en) * | 1957-12-03 | 1961-07-19 | White & Co Ltd Samuel | Improvements in butterfly valves |
| GB2034442A (en) * | 1978-10-26 | 1980-06-04 | Klein Schanzlin & Becker Ag | Butterfly valve |
| CN201053507Y (en) * | 2007-06-14 | 2008-04-30 | 施荣礼 | Interference hard seal butterfly valve |
| CN105757262A (en) * | 2014-12-17 | 2016-07-13 | 天津鹏信科技发展有限公司 | Novel clamp type butterfly valve |
Non-Patent Citations (2)
| Title |
|---|
| H.休戈.布赫特: "《工业密封技术》", 31 May 1988 * |
| 王显方: "《化工管路与仪表》", 31 March 2015, 中国纺织出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113775768A (en) * | 2021-09-26 | 2021-12-10 | 上海双高阀门(集团)有限公司 | Lever type butterfly valve |
| CN113775768B (en) * | 2021-09-26 | 2023-03-21 | 上海双高阀门(集团)有限公司 | Lever type butterfly valve |
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Application publication date: 20181127 |