CN110081190B - Bidirectional sealing butterfly valve - Google Patents
Bidirectional sealing butterfly valve Download PDFInfo
- Publication number
- CN110081190B CN110081190B CN201910408219.8A CN201910408219A CN110081190B CN 110081190 B CN110081190 B CN 110081190B CN 201910408219 A CN201910408219 A CN 201910408219A CN 110081190 B CN110081190 B CN 110081190B
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- 238000007789 sealing Methods 0.000 title claims abstract description 38
- 230000002457 bidirectional effect Effects 0.000 title abstract description 9
- 230000008676 import Effects 0.000 claims abstract description 23
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 230000029058 respiratory gaseous exchange Effects 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims description 22
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 230000008901 benefit Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The invention relates to a bidirectional sealing butterfly valve, which is characterized in that: valve body top still is equipped with supercharging device, medium flow direction control mechanism, left import takeover and right import takeover, and left import takeover intercommunication left chamber, right import takeover intercommunication right chamber, supercharging device includes: the pressure increasing box comprises a pressure increasing box body, a pressure increasing plate and a sealing ring, wherein a control cavity with a sector-shaped cross section is arranged in the pressure increasing box body, the pressure increasing plate is arranged in the control cavity and divides the control cavity into a pressure increasing cavity and a breathing cavity, one end of the pressure increasing plate is fixedly connected with a valve rod, the breathing cavity is communicated with the atmosphere, a medium in the left cavity or the right cavity is controlled to enter the pressure increasing cavity through the matching of a left inlet connecting pipe, a right inlet connecting pipe and a medium flow direction control mechanism, the pressure increasing plate generates an acting force which is towards the closing direction of the butterfly plate and acts on the butterfly plate through the valve rod under the pushing of the medium in the pressure increasing cavity, and the.
Description
Technical Field
The invention relates to a valve, in particular to a bidirectional sealing butterfly valve.
Background
The butterfly valve is a valve which uses a disc type butterfly plate to rotate in a reciprocating way by about 90 degrees to open, close or adjust the medium flow, the valve is used in a high-temperature working condition or reduces the friction between a sealing surface of the butterfly plate and a sealing surface of a valve seat when the valve is opened and closed, the butterfly valve structure generally adopts a three-eccentric structure in a metal and metal sealing form, and the butterfly valve has the defects that: when the operating mode requires to have the two-way sealing function, the butterfly valve of this three eccentric structures only has one-way leakproofness good, that is to say if the medium gets into the butterfly valve inner chamber from the import side of this valve, then this valve is when closing, has fine leakproofness, if the medium gets into the butterfly valve inner chamber from the exit side of this valve, then this valve can't keep sealed, the butterfly valve application range of this three eccentric structures is narrow, in order to satisfy the operating mode requirement of two-way sealing function, then two this type butterfly valves cooperation installation just can solve, thereby arouse with high costs, the installation is loaded down with trivial details, the pipeline velocity of flow reduces, pipeline pressure drop increases.
Disclosure of Invention
Aiming at the technical defects in the prior art, the invention provides a bidirectional sealing butterfly valve with a bidirectional sealing function.
The invention is realized by the following technical scheme:
this two-way sealed butterfly valve includes: valve body, valve rod, butterfly plate and disk seat, disk seat fixed mounting are in the valve body inner chamber, and the round surface is equipped with the sealed face of disk seat in the disk seat, and the butterfly plate is installed at the valve body inner chamber, and the butterfly plate excircle surface is equipped with can form sealed butterfly plate sealing face with the sealed face of disk seat, and the valve rod lower extreme stretches into the valve body inner chamber downwards and forms fixed connection with the butterfly plate, and when the butterfly plate cooperateed with the disk seat and forms to close, the butterfly plate kept apart the valve body inner chamber and forms left chamber and right chamber: valve body top still is equipped with supercharging device, medium flow direction control mechanism, left import takeover and right import takeover, and left import takeover intercommunication left chamber, right import takeover intercommunication right chamber, supercharging device includes: the pressure boosting device comprises a pressure boosting box, a pressure boosting plate and a sealing ring, wherein a control cavity with a sector-shaped cross section is arranged in the pressure boosting box, the pressure boosting plate is arranged in the control cavity and divides the control cavity into a pressure boosting cavity and a breathing cavity, one end of the pressure boosting plate is fixedly connected with a valve rod, the breathing cavity is communicated with the atmosphere, and the upper end of the pressure boosting cavity is provided with a left vertical hole and a right vertical hole which are communicated with the pressure boosting cavity; the medium flow direction control mechanism is arranged above the supercharging device, and comprises: the lower part of the control box is provided with a left lower air inlet hole, a right lower air inlet hole and a check flap, the check flap is transversely arranged, the left lower air inlet hole and the right lower air inlet hole are respectively arranged at the left side and the right side of the check flap, the left lower air inlet hole is communicated with the left inlet connecting pipe, the right lower air inlet hole is communicated with the right inlet connecting pipe, when the check flap moves leftwards, the left vertical hole is separated from the left lower air inlet hole, the right vertical hole is communicated with the right lower air inlet hole, when the check flap moves rightwards, the right vertical hole is separated from the right lower air inlet hole, the left vertical hole is communicated with the left lower air inlet hole, the main adjusting rod, the left adjusting rod and the right adjusting rod are sequentially and vertically arranged at the upper part of the control box rightwards side by side, the upper end of the main adjusting rod extends out of the upper end surface of the control box and is provided with a main upper adjusting gear, the lower part of, when the right adjusting rod moves upwards, the right adjusting gear can form gear transmission connection with the main middle adjusting gear, the lower end of the right adjusting rod is in gear rack transmission connection with the non-return flap, the upper end of the left adjusting rod is connected with the right adjusting gear, the middle part of the left adjusting rod is provided with the left adjusting gear, when the left adjusting rod moves downwards, the left adjusting gear is in gear transmission connection with the main lower adjusting gear, and the lower end of the left adjusting rod is in gear rack transmission connection with the non-return flap; the upper portion of control box still is equipped with left and right upper air inlet hole, and left upper air inlet hole intercommunication left side import is taken over and right regulating gear up end, and terminal surface under right upper air inlet hole intercommunication right side import was taken over and right regulating gear, and the upper end of the valve rod upwards pierces through supercharging device and medium flow direction control mechanism and stretches upwards, and the valve rod upper end can be connected with external drive device, and valve rod upper portion still is equipped with and mainly goes up regulating gear and form gear drive's master gear.
Furthermore, the valve seat sealing surface and the butterfly plate sealing surface are of an inclined conical structure.
Furthermore, a sealing ring is arranged at the contact part of the pressure increasing plate and the inner wall of the control cavity.
The invention has the advantages that: by utilizing the functions of the supercharging device and the medium flow direction control mechanism, an additional acting force is added to the butterfly plate, the sealing specific pressure between the sealing surface of the butterfly plate and the sealing surface of the valve seat is increased, and the butterfly valve has the advantage of good sealing performance.
Drawings
Fig. 1 is a schematic structural diagram of a bidirectional sealing butterfly valve according to the present invention.
Fig. 2 is a cross-sectional view E-E of fig. 1 of a two-way sealing butterfly valve of the present invention.
Detailed Description
As shown in fig. 1 and 2, the bidirectional sealing butterfly valve includes: valve body 1, valve rod 2, butterfly plate 3 and disk seat 4, 4 fixed mounting of disk seat are at 1 inner chamber of valve body, 4 interior round surfaces of disk seat are equipped with the sealed face of disk seat, butterfly plate 3 is installed at 1 inner chamber of valve body, 3 outer round surfaces of butterfly plate are equipped with can form sealed butterfly plate sealed face with the sealed face of disk seat, 2 lower extremes of valve rod stretch into 1 inner chamber of valve body downwards and form fixed connection with butterfly plate 3, butterfly plate 3 cooperatees with disk seat 2 and forms when closing, butterfly plate 3 keeps apart 1 inner chamber of valve body and forms left chamber and right chamber, 1 top of valve body still is equipped with supercharging device, medium flow direction control mechanism, left side import takeover 5 and right import takeover 21, left side import takeover 5 left chamber of intercommunication, right side import takeover 21: the pressure boosting device comprises a pressure boosting box 6, a pressure boosting plate 8 and a sealing ring 7, wherein a control cavity with a sector-shaped cross section is arranged in the pressure boosting box 6, the pressure boosting plate 8 is arranged in the control cavity and divides the control cavity into a pressure boosting cavity 22 and a breathing cavity 23, one end of the pressure boosting plate 22 is fixedly connected with a valve rod 2, the breathing cavity 23 is communicated with the atmosphere, and the upper end of the pressure boosting cavity 22 is provided with a left vertical hole and a right vertical hole which are communicated with the pressure boosting cavity; the medium flow direction control mechanism is arranged above the supercharging device, and comprises: the control box comprises a control box, a check valve 9, a main adjusting rod 16, a left adjusting rod 11 and a right adjusting rod 13, wherein the lower part of the control box is provided with left and right lower air inlet holes 10 and 20 and the check valve 9, the check valve 9 is transversely arranged, the left and right lower air inlet holes 10 and 20 are respectively arranged on the left and right sides of the check valve 9, the left lower air inlet hole 10 is communicated with a left inlet connecting pipe 5, the right lower air inlet hole 20 is communicated with a right inlet connecting pipe 21, when the check valve 9 moves leftwards, a left vertical hole is isolated from the left lower air inlet hole 10, meanwhile, a right vertical hole is communicated with the right lower air inlet hole 20, when the check valve 9 moves rightwards, a right vertical hole is isolated from the right lower air inlet hole 20, the left vertical hole is communicated with the left lower air inlet hole 10, the main adjusting rod 16, the left adjusting rod 11 and the right adjusting rod 13 are sequentially arranged on the upper part of the control box side by side in parallel rightwards, the upper end of the main adjusting rod 16 extends, the upper part of the right adjusting rod 13 is provided with a right adjusting gear 14, the right adjusting gear 14 can form gear transmission connection with the main middle adjusting gear when the right adjusting rod 13 moves upwards, the lower end of the right adjusting rod 13 forms gear rack transmission connection with the check valve 9, the upper end of the left adjusting rod 11 is connected with the right adjusting gear 14, the middle part of the left adjusting rod 11 is provided with a left adjusting gear 12, when the left adjusting rod 11 moves downwards, the left adjusting gear 12 forms gear transmission connection with the main lower adjusting gear, and the lower end of the left adjusting rod 11 forms gear rack transmission connection with the check valve 9; the upper portion of control box still is equipped with left and right upper air vent 15, 19, and left upper air vent 15 intercommunication left import is taken over 5 and right adjusting gear 14 up end, and right upper air vent 19 intercommunication right import is taken over 21 and right adjusting gear 14 lower extreme face, and the upper end of valve rod 2 upwards pierces through supercharging device and medium flow direction control mechanism and stretches upwards, and the upper end of valve rod 2 can be connected with external drive device, and valve rod upper portion still is equipped with the master gear 18 that forms gear drive with main adjusting gear 17.
Furthermore, the valve seat sealing surface and the butterfly plate sealing surface are of an inclined conical structure.
Furthermore, a sealing ring 7 is arranged at the contact part of the pressure increasing plate 8 and the inner wall of the control cavity.
When the valve is in a closed state and the medium pressure in the left cavity is greater than the medium pressure in the right cavity, the medium in the left cavity enters the left lower air inlet hole through the left inlet connecting pipe and pushes the check valve to move rightwards, the right vertical hole is isolated from the right lower air inlet hole, the left vertical hole is communicated with the left lower air inlet hole, the medium in the left cavity enters the pressurizing cavity, and the pressurizing plate generates an acting force which is towards the closing direction of the butterfly plate and acts on the butterfly plate through the valve rod under the pushing of the medium in the pressurizing cavity; simultaneously, a medium in the left cavity enters the upper part of the right adjusting gear through the left inlet connecting pipe and the left upper air inlet hole and pushes the right adjusting gear and the left adjusting rod to move downwards, the right adjusting gear is separated from the gear transmission connection with the main middle adjusting gear, the lower end of the right adjusting rod is separated from the gear rack transmission connection with the check valve, the left adjusting gear forms the gear transmission connection with the main lower adjusting gear, the lower end of the left adjusting rod forms the gear rack transmission connection with the check valve, when the valve is turned to an opening state from a closing state, the valve rod is driven to rotate and open through an external driving device, in the opening process, the main gear drives the main upper adjusting gear to rotate and simultaneously drives the main adjusting rod and the left adjusting rod to rotate, the check valve is driven to move leftwards through the gear rack transmission between the lower end of the left adjusting rod and the check valve, the left vertical hole is isolated from, the medium in the pressurization cavity flows to the right cavity through the right lower air inlet hole and the right inlet connecting pipe, and the pressurization plate and the butterfly plate rotate towards the opening direction of the butterfly plate under the driving of the valve rod until the butterfly plate is completely opened.
When the valve is in a closed state and the medium pressure in the right cavity is greater than the medium pressure in the left cavity, the medium in the right cavity enters the right lower air inlet hole through the right inlet connecting pipe and pushes the check valve to move left, the left vertical hole is isolated from the left lower air inlet hole, the right vertical hole is communicated with the right lower air inlet hole, the medium in the right cavity enters the pressurizing cavity, and the pressurizing plate generates an acting force which is towards the closing direction of the butterfly plate and acts on the butterfly plate through the valve rod under the pushing of the medium in the pressurizing cavity; simultaneously, a medium in the right cavity enters the lower part of the right adjusting gear through the right inlet connecting pipe and the right upper air inlet hole and pushes the right adjusting gear and the left adjusting rod to move upwards, the left adjusting gear is separated from the gear transmission connection with the main lower adjusting gear, the lower end of the left adjusting rod is separated from the gear rack transmission connection with the check valve, the right adjusting gear forms the gear transmission connection with the main middle adjusting gear, the lower end of the right adjusting rod forms the gear rack transmission connection with the check valve, when the valve is turned to an opening state from a closing state, the valve rod is driven to rotate and open through an external driving device, in the opening process, the main gear drives the main upper adjusting gear to rotate and simultaneously drives the main adjusting rod and the right adjusting rod to rotate, the check valve is driven to move rightwards through the gear rack transmission between the lower end of the right adjusting rod and the check valve, the right vertical hole is isolated, the medium in the pressurization cavity flows to the left cavity through the left lower air inlet hole and the left inlet connecting pipe, and the pressurization plate and the butterfly plate rotate towards the opening direction of the butterfly plate under the driving of the valve rod until the butterfly plate is completely opened.
Therefore, no matter the medium pressure in the left cavity is greater than the medium pressure in the right cavity or the medium pressure in the right cavity is greater than the medium pressure in the left cavity, the valve keeps good sealing performance, bidirectional flow is achieved, and sealing performance is good.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. A two-way sealing butterfly valve comprising: valve body, valve rod, butterfly plate and disk seat, disk seat fixed mounting are in the valve body inner chamber, and the round surface is equipped with the sealed face of disk seat in the disk seat, and the butterfly plate is installed at the valve body inner chamber, and the butterfly plate excircle surface is equipped with can form sealed butterfly plate sealing face with the sealed face of disk seat, and the valve rod lower extreme stretches into the valve body inner chamber downwards and forms fixed connection with the butterfly plate, and when the butterfly plate cooperateed with the disk seat and forms to close, the butterfly plate kept apart the valve body inner chamber and forms left chamber and right chamber: valve body top still is equipped with supercharging device, medium flow direction control mechanism, left import takeover and right import takeover, and left import takeover intercommunication left chamber, right import takeover intercommunication right chamber, supercharging device includes: the pressure boosting device comprises a pressure boosting box, a pressure boosting plate and a sealing ring, wherein a control cavity with a sector-shaped cross section is arranged in the pressure boosting box, the pressure boosting plate is arranged in the control cavity and divides the control cavity into a pressure boosting cavity and a breathing cavity, one end of the pressure boosting plate is fixedly connected with a valve rod, the breathing cavity is communicated with the atmosphere, and the upper end of the pressure boosting cavity is provided with a left vertical hole and a right vertical hole which are communicated with the pressure boosting cavity; the medium flow direction control mechanism is arranged above the supercharging device, and comprises: the lower part of the control box is provided with a left lower air inlet hole, a right lower air inlet hole and a check flap, the check flap is transversely arranged, the left lower air inlet hole and the right lower air inlet hole are respectively arranged at the left side and the right side of the check flap, the left lower air inlet hole is communicated with the left inlet connecting pipe, the right lower air inlet hole is communicated with the right inlet connecting pipe, when the check flap moves leftwards, the left vertical hole is separated from the left lower air inlet hole, the right vertical hole is communicated with the right lower air inlet hole, when the check flap moves rightwards, the right vertical hole is separated from the right lower air inlet hole, the left vertical hole is communicated with the left lower air inlet hole, the main adjusting rod, the left adjusting rod and the right adjusting rod are sequentially and vertically arranged at the upper part of the control box rightwards side by side, the upper end of the main adjusting rod extends out of the upper end surface of the control box and is provided with a main upper adjusting gear, the lower part of, when the right adjusting rod moves upwards, the right adjusting gear can form gear transmission connection with the main middle adjusting gear, the lower end of the right adjusting rod is in gear rack transmission connection with the non-return flap, the upper end of the left adjusting rod is connected with the right adjusting gear, the middle part of the left adjusting rod is provided with the left adjusting gear, when the left adjusting rod moves downwards, the left adjusting gear is in gear transmission connection with the main lower adjusting gear, and the lower end of the left adjusting rod is in gear rack transmission connection with the non-return flap; the upper portion of control box still is equipped with left and right upper air inlet hole, and left upper air inlet hole intercommunication left side import is taken over and right regulating gear up end, and terminal surface under right upper air inlet hole intercommunication right side import was taken over and right regulating gear, and the upper end of the valve rod upwards pierces through supercharging device and medium flow direction control mechanism and stretches upwards, and the valve rod upper end can be connected with external drive device, and valve rod upper portion still is equipped with and mainly goes up regulating gear and form gear drive's master gear.
2. A bi-directional sealing butterfly valve according to claim 1, wherein: the sealing surface of the valve seat and the sealing surface of the butterfly plate are in an inclined conical structure.
3. A bi-directional sealing butterfly valve according to claim 1, wherein: and a sealing ring is arranged at the contact part of the pressure increasing plate and the inner wall of the control cavity.
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 CN110081190A (en) | 2019-08-02 |
| CN110081190B true CN110081190B (en) | 2021-04-30 |
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| 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 |
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| CN (1) | CN110081190B (en) |
Families Citing this family (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***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***有限公司 | A kind of three-eccentric-butterfly-valve and pressure adaptive valve control system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110081190A (en) | 2019-08-02 |
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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 |