CN110081190A - A kind of bidirectional sealed butterfly valve - Google Patents
A kind of bidirectional sealed butterfly valve Download PDFInfo
- Publication number
- CN110081190A CN110081190A CN201910408219.8A CN201910408219A CN110081190A CN 110081190 A CN110081190 A CN 110081190A CN 201910408219 A CN201910408219 A CN 201910408219A CN 110081190 A CN110081190 A CN 110081190A
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- Prior art keywords
- valve
- chamber
- air inlet
- adjustment gear
- entrance sleeve
- 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.)
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- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 32
- 230000007246 mechanism Effects 0.000 claims abstract description 15
- 230000000241 respiratory effect Effects 0.000 claims abstract description 8
- 230000008676 import Effects 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
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
- F16K1/226—Shaping or arrangements of the sealing
-
- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The present invention relates to a kind of bidirectional sealed butterfly valves, it is characterized by: being additionally provided with supercharging device above valve body, medium flow direction control mechanism, left entrance sleeve and right entrance sleeve, left entrance sleeve is connected to left chamber, right entrance sleeve is connected to right chamber, supercharging device includes: pressurizing tank, pressuring plate, and sealing ring, the control chamber that cross section is sector structure is equipped in pressurizing tank, pressuring plate is arranged in control chamber and control chamber is separated into booster cavity and respiratory cavity, one end of pressuring plate forms a fixed connection with valve rod, respiratory cavity is communicated with atmosphere, pass through a left side, the cooperation of right entrance sleeve and medium flow direction control mechanism, the medium of control left chamber or right chamber enters booster cavity, pressuring plate generates one to butterfly plate closing direction by valve rod under the promotion of medium in booster cavity and acts on the active force on butterfly plate, make to keep sealing between butterfly plate and valve seat, tool Have the advantages that two way seal is good.
Description
Technical field
The present invention relates to a kind of valve more particularly to a kind of bidirectional sealed butterfly valves.
Background technique
Butterfly valve is to open, close or adjust a kind of valve of rate-of flow with 90 ° or so of disc type butterfly plate reciprocating rotating,
It is using in worst hot case or to reduce the friction between butterfly plate sealing surface and sealing surface of seat when opening and closing, and butterfly valve structure is generally all
Using the three eccentricity structure of metal and metal sealing form, and its shortcoming is that: when applying working condition requires two way seal function
When energy, the butterfly valve of the three eccentricity structure only has one-way sealing good, that is to say, that if medium enters from the inlet side of the valve
Butterfly valve inner cavity, then the valve when closed, has good leakproofness, if medium enters butterfly valve inner cavity from the outlet side of the valve
When, then the valve cannot keep sealing, and the butterfly valve use scope of the three eccentricity structure is narrow, in order to meet the operating condition of two way seal function
It is required that then two this type butterfly valves are coupled and just can solve, reduced so as to cause at high cost, erroneous for installation, pipe flow speed,
Piping loss increases.
Summary of the invention
For technological deficiency existing in the prior art, it is two-way that the present invention provides a kind of one kind with two way seal function
Sealed butterfly valve.
The present invention realizes by following technical solution:
A kind of bidirectional sealed butterfly valve, comprising: valve body, valve rod, butterfly plate and valve seat, valve seat are fixedly mounted on body cavity, valve seat
Internal circular surfaces are equipped with sealing surface of seat, and butterfly plate is mounted on body cavity, and butterfly plate outer round surface is equipped with and can be formed with sealing surface of seat
The butterfly plate sealing surface of sealing, valve rod lower end extend downwardly into body cavity and form a fixed connection with butterfly plate, and butterfly plate and valve seat match
When closing formation closing, body cavity is isolated to form left chamber and right chamber for butterfly plate, it is characterised in that: pressurization dress is additionally provided with above valve body
It sets, medium flow direction control mechanism, left entrance sleeve and right entrance sleeve, left entrance sleeve are connected to left chamber, right entrance sleeve connection
Right chamber, supercharging device include: pressurizing tank, pressuring plate and sealing ring, and the control that cross section is sector structure is equipped in pressurizing tank
Chamber, pressuring plate are arranged in control chamber and control chamber are separated into booster cavity and respiratory cavity, and one end and the valve rod of pressuring plate are formed
It is fixedly connected, respiratory cavity is communicated with atmosphere, and the upper end of booster cavity is equipped with the left and right vertical holes of connection booster cavity；Medium flow direction control
The top of supercharging device is arranged in mechanism processed, and medium flow direction control mechanism includes: control cabinet, non-return flap, homophony pole, left adjusting
Bar, right adjusting rod, the lower part of control cabinet are equipped with left and right lower air inlet and non-return flap, and non-return flap is laterally arranged, left and right lower air inlet
Hole is separately positioned on the left and right side of non-return flap, and lower-left air inlet is connected to left entrance sleeve, and bottom right air inlet is connected to right import and connects
Pipe, when non-return flap is moved to the left, left vertical holes is isolated with lower-left air inlet, while right vertical holes is connected to bottom right air inlet, non-return
When valve moves right, right vertical holes is isolated with bottom right air inlet, and left vertical holes is connected to lower-left air inlet, homophony pole, left adjusting
Bar and right adjusting rod are successively vertically provided to the right the top of control cabinet side by side, and control cabinet upper surface is stretched out simultaneously in homophony pole upper end
Equipped with Your Majesty's adjustment gear, homophony pole lower part is successively arranged downwards adjustment gear and main lower adjustment gear, right adjusting rod in main
Top be equipped with right adjustment gear, right adjusting rod when moving up right adjustment gear can in master adjustment gear formed gear drive connect,
Right adjusting rod lower end forms rack pinion with non-return flap and connect, and left adjusting rod upper end is connected with right adjustment gear, left tune
Left adjustment gear is equipped in the middle part of pole, when left adjusting rod moves down, left adjustment gear connects with main lower adjusting gear shape at gear drive
It connects, left adjusting rod lower end forms rack pinion with non-return flap and connect；The top of control cabinet is additionally provided with left and right enterprising stomata,
Upper left air inlet is connected to left entrance sleeve and right adjustment gear upper surface, and upper right air inlet is connected to right entrance sleeve and right adjusting tooth
Lower end surface is taken turns, valve rod upper end upwardly penetrates through supercharging device and medium flow direction control mechanism stretches to top, and valve rod upper end can be with outside
Driving device is connected, and valve rod top, which is additionally provided with, forms gear-driven master gear with Your Majesty's adjustment gear.
Further, the sealing surface of seat is and butterfly plate sealing surface is oblique cone shape structure.
Further, the pressuring plate and control cavity wall contact site are equipped with sealing ring.
The present invention has the advantages that increasing by one to butterfly plate using the effect of supercharging device and medium flow direction control mechanism
Additional active force increases the seal pressure between butterfly plate sealing surface and sealing surface of seat, has the advantages that good airproof performance.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of bidirectional sealed butterfly valve of the present invention.
Fig. 2 is a kind of E-E sectional view of bidirectional sealed butterfly valve Fig. 1 of the present invention.
Specific embodiment
According to Fig. 1,2 it is found that a kind of bidirectional sealed butterfly valve, comprising: valve body 1, valve rod 2, butterfly plate 3 and valve seat 4, valve seat 4
It is fixedly mounted on 1 inner cavity of valve body, 4 internal circular surfaces of valve seat are equipped with sealing surface of seat, and butterfly plate 3 is mounted on 1 inner cavity of valve body, outside butterfly plate 3
Circular surfaces are equipped with the butterfly plate sealing surface that sealing can be formed with sealing surface of seat, and 2 lower end of valve rod extends downwardly into 1 inner cavity of valve body and and butterfly
Plate 3 forms a fixed connection, and when butterfly plate 3 matches to form closing with valve seat 2, butterfly plate 3 is isolated 1 inner cavity of valve body to form left chamber and the right side
Chamber is additionally provided with supercharging device, medium flow direction control mechanism, left entrance sleeve 5 and right entrance sleeve 21, left import above valve body 1
Adapter tube 5 is connected to left chamber, and right entrance sleeve 21 is connected to right chamber, and supercharging device includes: pressurizing tank 6, pressuring plate 8 and sealing ring 7, increases
The control chamber in case 6 equipped with cross section for sector structure is pressed, pressuring plate 8 is arranged in control chamber and control chamber is separated into pressurization
Chamber 22 and respiratory cavity 23, one end and the valve rod 2 of pressuring plate 22 form a fixed connection, and respiratory cavity 23 is communicated with atmosphere, booster cavity 22
Upper end be equipped with connection booster cavity left and right vertical holes；The top of supercharging device, medium flow field is arranged in medium flow direction control mechanism
It include: control cabinet, non-return flap 9, homophony pole 16, left adjusting rod 11, right adjusting rod 13 to control mechanism, the lower part of control cabinet is set
There are left and right lower air inlet 10,20 and non-return flap 9, laterally setting, left and right lower air inlet 10,20 are separately positioned on only non-return flap 9
The left and right side of valve 9 is returned, lower-left air inlet 10 is connected to left entrance sleeve 5, and bottom right air inlet 20 is connected to right entrance sleeve 21, non-return
When valve 9 is moved to the left, left vertical holes is isolated with lower-left air inlet 10, while right vertical holes is connected to bottom right air inlet 20, non-return flap 9
When moving right, right vertical holes is isolated with bottom right air inlet 20, and left vertical holes is connected to lower-left air inlet 10, homophony pole 16, a left side
Adjusting rod 11 and right adjusting rod 13 are successively vertically provided to the right the top of control cabinet side by side, and control is stretched out in 16 upper end of homophony pole
Case upper surface is simultaneously equipped with Your Majesty's adjustment gear 17, and 16 lower part of homophony pole is successively arranged downwards in main and adjusts under adjustment gear and master
Gear, right 13 top of adjusting rod be equipped with right adjustment gear 14, right adjusting rod 13 when moving up right adjustment gear 14 can with adjusted in master
Gear forms gear drive connection, and right 13 lower end of adjusting rod forms rack pinion with non-return flap 9 and connect, on left adjusting rod 11
End is connected with right adjustment gear 14, and left adjustment gear 12, when left adjusting rod 11 moves down, left adjusting are equipped in the middle part of left adjusting rod 11
Gear 12 is connect with main lower adjusting gear shape at gear drive, and left 11 lower end of adjusting rod and non-return flap 9 form rack pinion
Connection；The top of control cabinet is additionally provided with left and right enterprising stomata 15,19, and upper left air inlet 15 is connected to left entrance sleeve 5 and right adjusting
14 upper surface of gear, upper right air inlet 19 are connected to 14 lower end surface of right entrance sleeve 21 and right adjustment gear, and 2 upper end of valve rod is worn upwards
Saturating supercharging device and medium flow direction control mechanism stretch to top, and 2 upper end of valve rod can be connected with external driver device, valve rod top
It is additionally provided with and forms gear-driven master gear 18 with Your Majesty's adjustment gear 17.
Further, the sealing surface of seat is and butterfly plate sealing surface is oblique cone shape structure.
Further, the pressuring plate 8 is equipped with sealing ring 7 with control cavity wall contact site.
Medium in the case where valve is in close state, when pressure medium is greater than pressure medium in right chamber in left chamber, in left chamber
Enter lower-left air inlet by left entrance sleeve, and non-return flap is pushed to move to right, right vertical holes is isolated with bottom right air inlet, Zuo Shuzhi
Hole is connected to lower-left air inlet, and the medium in left chamber enters booster cavity, and pressuring plate passes through valve rod under the promotion of medium in booster cavity
One is generated to butterfly plate closing direction and acts on the active force on butterfly plate；Simultaneously the medium in left chamber by left entrance sleeve and
Upper left air inlet enters the top of right adjustment gear, and right adjustment gear and left adjusting rod is pushed to move down, right adjustment gear
It is detached from gear drive with adjustment gear in master to connect, right adjusting rod lower end is detached from rack pinion with non-return flap and connect, left tune
Section gear is connect with main lower adjusting gear shape at gear drive, and left adjusting rod lower end and non-return flap form rack pinion and connect
It connects, when which turns to open state by closed state, is rotarily opened by external driver device band ovable valve stem, in opening process
In, master gear drives the rotation of Your Majesty's adjustment gear, while homophony pole and left adjusting rod being driven to rotate, and passes through left adjusting rod lower end
Rack pinion between non-return flap drives non-return flap to be moved to the left, and left vertical holes is isolated with lower-left air inlet, right vertical
Hole is connected to bottom right air inlet, and the medium in booster cavity flows to right chamber, while pressuring plate by bottom right air inlet and right entrance sleeve
It is rotated under the drive of valve rod towards the direction that butterfly plate is opened with butterfly plate, it is straight that butterfly plate is caused to fully open.
Medium in the case where valve is in close state, when pressure medium is greater than pressure medium in left chamber in right chamber, in right chamber
Enter bottom right air inlet by right entrance sleeve, and non-return flap is pushed to move to left, left vertical holes is isolated with lower-left air inlet, right vertical
Hole is connected to bottom right air inlet, and the medium in right chamber enters booster cavity, and pressuring plate passes through valve rod under the promotion of medium in booster cavity
One is generated to butterfly plate closing direction and acts on the active force on butterfly plate；Simultaneously the medium in right chamber by right entrance sleeve and
Upper right air inlet enters the lower section of right adjustment gear, and right adjustment gear and left adjusting rod is pushed to move up, left adjustment gear
It is detached from gear drive with main lower adjustment gear to connect, left adjusting rod lower end is detached from rack pinion with non-return flap and connect, right tune
Section gear forms gear drive with adjustment gear in master and connect, and right adjusting rod lower end and non-return flap form rack pinion and connect
It connects, when which turns to open state by closed state, is rotarily opened by external driver device band ovable valve stem, in opening process
In, master gear drives the rotation of Your Majesty's adjustment gear, while homophony pole and right adjusting rod being driven to rotate, and passes through right adjusting rod lower end
Rack pinion between non-return flap drives non-return flap to move right, and right vertical holes is isolated with bottom right air inlet, Zuo Shuzhi
Hole is connected to lower-left air inlet, and the medium in booster cavity flows to left chamber, while pressuring plate by lower-left air inlet and left entrance sleeve
It is rotated under the drive of valve rod towards the direction that butterfly plate is opened with butterfly plate, it is straight that butterfly plate is caused to fully open.
Therefore, no matter pressure medium is greater than in right chamber pressure medium in pressure medium or right chamber and is greater than in left chamber in left chamber
Pressure medium, the valve is all logical to keep good leakproofness, has two-way flow, and good airproof performance.
In conclusion the above is merely preferred embodiments of the present invention, being not intended to limit the scope of the present invention.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (3)
1. a kind of bidirectional sealed butterfly valve, comprising: valve body, valve rod, butterfly plate and valve seat, valve seat are fixedly mounted on body cavity, valve seat
Internal circular surfaces are equipped with sealing surface of seat, and butterfly plate is mounted on body cavity, and butterfly plate outer round surface is equipped with and can be formed with sealing surface of seat
The butterfly plate sealing surface of sealing, valve rod lower end extend downwardly into body cavity and form a fixed connection with butterfly plate, and butterfly plate and valve seat match
When closing formation closing, body cavity is isolated to form left chamber and right chamber for butterfly plate, it is characterised in that: pressurization dress is additionally provided with above valve body
It sets, medium flow direction control mechanism, left entrance sleeve and right entrance sleeve, left entrance sleeve are connected to left chamber, right entrance sleeve connection
Right chamber, supercharging device include: pressurizing tank, pressuring plate and sealing ring, and the control that cross section is sector structure is equipped in pressurizing tank
Chamber, pressuring plate are arranged in control chamber and control chamber are separated into booster cavity and respiratory cavity, and one end and the valve rod of pressuring plate are formed
It is fixedly connected, respiratory cavity is communicated with atmosphere, and the upper end of booster cavity is equipped with the left and right vertical holes of connection booster cavity；Medium flow direction control
The top of supercharging device is arranged in mechanism processed, and medium flow direction control mechanism includes: control cabinet, non-return flap, homophony pole, left adjusting
Bar, right adjusting rod, the lower part of control cabinet are equipped with left and right lower air inlet and non-return flap, and non-return flap is laterally arranged, left and right lower air inlet
Hole is separately positioned on the left and right side of non-return flap, and lower-left air inlet is connected to left entrance sleeve, and bottom right air inlet is connected to right import and connects
Pipe, when non-return flap is moved to the left, left vertical holes is isolated with lower-left air inlet, while right vertical holes is connected to bottom right air inlet, non-return
When valve moves right, right vertical holes is isolated with bottom right air inlet, and left vertical holes is connected to lower-left air inlet, homophony pole, left adjusting
Bar and right adjusting rod are successively vertically provided to the right the top of control cabinet side by side, and control cabinet upper surface is stretched out simultaneously in homophony pole upper end
Equipped with Your Majesty's adjustment gear, homophony pole lower part is successively arranged downwards adjustment gear and main lower adjustment gear, right adjusting rod in main
Top be equipped with right adjustment gear, right adjusting rod when moving up right adjustment gear can in master adjustment gear formed gear drive connect,
Right adjusting rod lower end forms rack pinion with non-return flap and connect, and left adjusting rod upper end is connected with right adjustment gear, left tune
Left adjustment gear is equipped in the middle part of pole, when left adjusting rod moves down, left adjustment gear connects with main lower adjusting gear shape at gear drive
It connects, left adjusting rod lower end forms rack pinion with non-return flap and connect；The top of control cabinet is additionally provided with left and right enterprising stomata,
Upper left air inlet is connected to left entrance sleeve and right adjustment gear upper surface, and upper right air inlet is connected to right entrance sleeve and right adjusting tooth
Lower end surface is taken turns, valve rod upper end upwardly penetrates through supercharging device and medium flow direction control mechanism stretches to top, and valve rod upper end can be with outside
Driving device is connected, and valve rod top, which is additionally provided with, forms gear-driven master gear with Your Majesty's adjustment gear.
2. a kind of bidirectional sealed butterfly valve according to claim 1, it is characterised in that: the sealing surface of seat is and butterfly plate is close
Cover is oblique cone shape structure.
3. a kind of bidirectional sealed butterfly valve according to claim 1, it is characterised in that: the pressuring plate connects with control cavity wall
Contact portion position is equipped with sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910408219.8A CN110081190B (en) | 2019-05-15 | 2019-05-15 | Bidirectional sealing butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910408219.8A CN110081190B (en) | 2019-05-15 | 2019-05-15 | Bidirectional sealing butterfly valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110081190A true CN110081190A (en) | 2019-08-02 |
| CN110081190B CN110081190B (en) | 2021-04-30 |
Family
ID=67420546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910408219.8A Active CN110081190B (en) | 2019-05-15 | 2019-05-15 | Bidirectional sealing butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110081190B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112032324A (en) * | 2020-09-24 | 2020-12-04 | 李祥庆 | Metal butterfly valve |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1216726A (en) * | 1968-10-16 | 1970-12-23 | Whessoe Ltd | Improvements in and relating to means for controlling flow of liquid through a drop pipe into a vessel |
| SU1712718A1 (en) * | 1989-10-31 | 1992-02-15 | Черноморский филиал Центрального научно-исследовательского института технологии судостроения | Device for pipeline shutting off |
| CN2348192Y (en) * | 1998-10-18 | 1999-11-10 | 张重辉 | Charge and discharge valve |
| CN202302000U (en) * | 2011-11-02 | 2012-07-04 | 湖北三通石油机械有限公司 | Sector cylinder pneumatic butterfly valve |
| CN104482243A (en) * | 2014-12-21 | 2015-04-01 | 郑子叶 | Frictionless sealing ball valve |
| CN204692595U (en) * | 2015-05-28 | 2015-10-07 | 常州埃姆基冷冻设备有限公司 | Industrial refrigeration right-angle type screw down nonreturn valve |
| CN205715701U (en) * | 2016-04-20 | 2016-11-23 | 邵建农 | Involute butterfly control valve for water pump |
| CN107355547A (en) * | 2017-08-08 | 2017-11-17 | 英诺威阀业有限公司 | It is a kind of from pressurising bidirectional sealed butterfly valve |
| CN109458461A (en) * | 2018-12-25 | 2019-03-12 | 博雷（中国）控制系统有限公司 | A kind of three-eccentric-butterfly-valve and pressure adaptive valve control system |
-
2019
- 2019-05-15 CN CN201910408219.8A patent/CN110081190B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1216726A (en) * | 1968-10-16 | 1970-12-23 | Whessoe Ltd | Improvements in and relating to means for controlling flow of liquid through a drop pipe into a vessel |
| SU1712718A1 (en) * | 1989-10-31 | 1992-02-15 | Черноморский филиал Центрального научно-исследовательского института технологии судостроения | Device for pipeline shutting off |
| CN2348192Y (en) * | 1998-10-18 | 1999-11-10 | 张重辉 | Charge and discharge valve |
| CN202302000U (en) * | 2011-11-02 | 2012-07-04 | 湖北三通石油机械有限公司 | Sector cylinder pneumatic butterfly valve |
| CN104482243A (en) * | 2014-12-21 | 2015-04-01 | 郑子叶 | Frictionless sealing ball valve |
| CN204692595U (en) * | 2015-05-28 | 2015-10-07 | 常州埃姆基冷冻设备有限公司 | Industrial refrigeration right-angle type screw down nonreturn valve |
| CN205715701U (en) * | 2016-04-20 | 2016-11-23 | 邵建农 | Involute butterfly control valve for water pump |
| CN107355547A (en) * | 2017-08-08 | 2017-11-17 | 英诺威阀业有限公司 | It is a kind of from pressurising bidirectional sealed butterfly valve |
| CN109458461A (en) * | 2018-12-25 | 2019-03-12 | 博雷（中国）控制系统有限公司 | A kind of three-eccentric-butterfly-valve and pressure adaptive valve control system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112032324A (en) * | 2020-09-24 | 2020-12-04 | 李祥庆 | Metal butterfly valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110081190B (en) | 2021-04-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Yang Xiongjun Inventor after: Xu Guohua Inventor before: Xu Guohua |
|
| CB03 | Change of inventor or designer information | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210409 Address after: 201800 No. 555, Huagao Road, Huating Town, Jiading District, Shanghai Applicant after: SHANGHAI HUGONG VALVE FACTORY (Group) Co.,Ltd. Address before: 325115 Gaoshan village, Yantou Town, Yongjia County, Wenzhou City, Zhejiang Province Applicant before: Xu Guohua |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A bidirectional sealed butterfly valve Granted publication date: 20210430 Pledgee: Shanghai Rural Commercial Bank Co.,Ltd. Jiading sub branch Pledgor: SHANGHAI HUGONG VALVE FACTORY (Group) Co.,Ltd. Registration number: Y2024310000228 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |