CN107355547A - It is a kind of from pressurising bidirectional sealed butterfly valve - Google Patents
It is a kind of from pressurising bidirectional sealed butterfly valve Download PDFInfo
- Publication number
- CN107355547A CN107355547A CN201710670551.2A CN201710670551A CN107355547A CN 107355547 A CN107355547 A CN 107355547A CN 201710670551 A CN201710670551 A CN 201710670551A CN 107355547 A CN107355547 A CN 107355547A
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- CN
- China
- Prior art keywords
- valve
- ring
- hollow
- valve shaft
- sealing ring
- 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
- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 47
- 210000004907 gland Anatomy 0.000 claims abstract description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 15
- 229910052802 copper Inorganic materials 0.000 claims description 15
- 239000010949 copper Substances 0.000 claims description 15
- 238000004073 vulcanization Methods 0.000 claims description 7
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000003915 liquefied petroleum gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- F16K1/2263—Shaping or arrangements of the sealing the sealing being arranged on the valve seat
-
- 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
- F16K1/228—Movable sealing bodies
-
- 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
- F16K1/32—Details
-
- 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
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—Valve seats
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
It is of the invention a kind of from pressurising bidirectional sealed butterfly valve, including the part such as valve body, butterfly plate, end cap, valve shaft, bearing pin, bearing, sealing shroud, sealing jacket gland, shuttle body, peg or spindle, hollow sealing ring, trim ring, flat key, O-ring, drive device.Hollow seal ring cross-section is circle, inner hollow, during valve opening and closing, it can effectively reduce the moment of torsion of valve, extend valve service life simultaneously, butterfly plate and valve shaft are connected transmission using bearing pin, and valve shaft passes through drive device and rotate valve shaft opening/shutting valve by being fixed on the bearings at valve body both ends, peg or spindle moves under pressure medium effect, make the outwards expansion that is pressurized inside hollow sealing ring, extrude butterfly plate sealing surface, the two way seal of valve can be achieved.Provide it is a kind of it is simple in construction, cheap, open and close torque is small, easy installation and removal, two way seal performance are good from pressurising bidirectional sealed butterfly valve.
Description
Technical field
It is more particularly to a kind of from pressurising bidirectional sealed butterfly valve the present invention relates to valve.
Background technology
Valve is that one or more openings or passage are blocked come open and close or partly using a movable part, makes liquid
Stream, air stream or other air-flows or a large amount of bulk materials can flow out, block or a kind of adjusted device.Butterfly valve, which is called, to be turned over
Plate valve, it is a kind of regulating valve simple in construction, is mainly made up of valve body, valve rod, butterfly plate and sealing ring.Valve body is cylindrical, axle
It is short to length, built-in butterfly plate.Butterfly valve opening and closing element is a discoidal butterfly plate, is rotated in valve body around the axis of its own, from
And reach the purpose for opening and closing or adjusting.Butterfly plate is driven by valve rod, if turning over 90 °, just can complete once to open and close.Change the inclined of butterfly plate
Gyration, you can control the flow of medium.Butterfly valve is applied to producer, coal gas, natural gas, liquefied petroleum gas, town gas, cold
Hot-air, chemical industry smelt and the engineering system such as generation environment-friendly, building water supply and drainage in convey various corrosivity, non-corrosive fluids are situated between
On the pipeline of matter, for adjusting and blocking the flowing of medium.Butterfly valve is as a control element being connected with pipe-line equipment, in valve
In the keying operating process of door, client wishes to reduce the open and close torque of valve as far as possible.Customer requirement butterfly valve has two way seal special
Property, and the butterfly valve of traditional structure can only realize one-way sealing, realize two way seal, can only be by increasing the diameter of valve shaft, strengthening
The intensity of butterfly plate, production cost is added during this, this is all worthless in current society with keen competition.
The content of the invention
It is an object of the invention to provide it is a kind of it is simple in construction, cheap, open and close torque is small, easy installation and removal, two-way
Good seal performance from pressurising bidirectional sealed butterfly valve.
In order to solve the above technical problems, of the present invention be located at the bearing of valve body from pressurising bidirectional sealed butterfly valve, bearing
In hole, valve shaft is fixed on the axis hole of butterfly plate through bearing through bearing pin, and valve shaft includes upper valve shaft and lower valve shaft, and lower valve shaft is consolidated through end cap
Fixed, upper valve shaft is affixed with drive device after being connected successively with sealing shroud, O-ring, sealing jacket gland, and drive device can drive butterfly
Plate does 90 ° of rotations, and upper valve shaft is provided with flat key, wherein, the section of hollow sealing ring is annular, and hollow sealing ring is embedded in valve body
Interior, hollow sealing ring is fixed in through hole through trim ring；Shuttle body is adapted with square platform raised on the outside of valve body, and shuttle body is provided with
Three holes being adapted with three holes on valve body, peg or spindle are placed in shuttle body, peg or spindle integrally vulcanized by rubber parts and copper fitting and
Into copper fitting is hollow cylinder, and copper fitting both ends are provided with annular dovetail slot, 2 groove Is are evenly equipped with copper fitting, for increasing
Add the adhesion strength after vulcanizing with rubber parts；Rubber parts both ends are provided with the 90 ° of arcs cone being adapted with the conical surface of shuttle body, rubber parts two
The raised semicircular ring in end is adapted with the plane of shuttle body.
Above-mentioned technical proposal hollow seal ring cross-section is used inner hollow, during valve opening and closing, can effectively to be dropped for circle
The moment of torsion of low valve, while extend valve service life；Peg or spindle is integrally vulcanized by copper fitting with rubber parts to be formed.Copper fitting is sky
Heart cylinder, both ends of the surface are machined with annular dovetail slot, and endoporus is machined with two sections of grooves, for increasing and gluing after rubber parts vulcanization
Knotting strength.The raised circular arc in rubber parts both ends is sealed with shuttle body cone match, and both ends semi-circular shape is and shuttle body
Plane, which coordinates, to seal, and peg or spindle moves under pressure medium effect, makes the outwards expansion that is pressurized inside hollow sealing ring, extruding
Butterfly plate sealing surface, the two way seal of valve can be achieved.
As a further improvement on the present invention, hollow sealing ring carries externally threaded suction nozzle, hollow seal provided with one
Circle is made up of rubber, and suction nozzle is made of stainless steel, and suction nozzle integrally forms with hollow sealing ring through vulcanization, among suction nozzle
Through hole connects with hollow ring.
Suction nozzle is made of stainless steel, and there is a through hole centre, the segment standard size external screw thread of Excircle machining one, is used for sky
Heart sealing ring pressure testing.
As a preference of the present invention, trim ring is provided with the circular groove that is adapted with hollow sealing ring, on trim ring is cylindrical
Provided with a strip connected in star, four through holes are evenly equipped with below strip connected in star, strip connected in star both ends are provided with and are adapted with O-ring
Groove II, for installing O-ring.
Beneficial effects of the present invention in summary：Using technical solutions according to the invention, hollow seal ring cross-section is circle
Shape, inner hollow, during valve opening and closing, the moment of torsion of valve can be effectively reduced, while extend valve service life, use is such a
Method reduces the moment of torsion of valve, simple in construction, cheap；Moved, made hollow close under pressure medium effect using peg or spindle
Seal inside, which is pressurized, outwards to be expanded, and extrudes butterfly plate sealing surface, the two way seal performance of achievable valve is good, easy installation and removal.
Brief description of the drawings
Fig. 1 is the front view of the present invention；
Fig. 2 is the left view of the present invention；
Fig. 3 is hollow sealing ring structural representation of the present invention；
Fig. 4 is ring pressing construction schematic diagram of the present invention；
Fig. 5 is peg or spindle structural representation of the present invention；
Fig. 6 seals schematic diagram for the present invention is positive；
Fig. 7 reversely seals schematic diagram for the present invention；
Shown in figure：1 valve body, 2 bearing pins, 3 butterfly plates, 4 peg or spindles, 5 shuttle bodies, 6 hollow sealing rings, 7 trim rings, 8
End cap, 9 bearings, 10-1 lower valve shafts, the upper valve shafts of 10-2,11 sealing shrouds, 12 O-rings, 13 sealing jacket glands,
14 flat keys, 15 drive devices, 16 rubber parts, 17 copper fittings, 18 annular dovetail slots, 19 semicircular rings, 20 arcs
Cone, 21 suction nozzles, 22 groove Is, 23 hollow rings, 24 circular grooves, 25 strip connected in stars, 26 through holes, 27 is recessed
Groove II, 28 positive pressures, 29 buffer brakes.
Embodiment
The present invention is described further with reference to the accompanying drawings and examples：
Being located at from pressurising bidirectional sealed butterfly valve, bearing 9 in the bearing hole of valve body 1 in the present embodiment, valve shaft is sold through bearing 9
Axle 2 is fixed on the axis hole of butterfly plate 3, and valve shaft includes upper valve shaft 10-2 and lower valve shaft 10-1, end cap 8,0 shape are used at lower valve shaft 10-1
Circle 12 coordinates with valve body 1 makes shaft end seal, is coordinated at upper valve shaft 10-2 using sealing shroud 11, O-ring 12 and sealing jacket gland 13
Make shaft end seal, be connected on upper valve shaft 10-2 equipped with flat key 14 with drive device 15, wherein drive device 15 can drive butterfly plate
3 do 90 ° of rotations, and the section of hollow sealing ring 6 is annular, and hollow sealing ring 6 is in valve body 1, hollow sealing ring
6 are fixed in through hole through trim ring 7；The square platform raised with the outside of valve body 1 of shuttle body 5 is adapted, and is set in shuttle body 5
There are three holes being adapted with three holes on valve body 1, peg or spindle 4 is placed in shuttle body 5, and peg or spindle 4 is by rubber parts 16
Formed with the overall vulcanization of copper fitting 17, copper fitting 17 is hollow cylinder, and the both ends of copper fitting 17 are provided with annular dovetail slot
18,2 groove Is are distributed on copper fitting 17, for strengthening the adhesion strength after vulcanizing with rubber parts 16；Rubber parts 16
Both ends are provided with the 90 ° of arcs cone being adapted with the conical surface of shuttle body 5, the plane phase of both ends raised semicircular ring 19 and shuttle body 5
Adaptation；Hollow sealing ring 6 carries externally threaded suction nozzle 21 provided with one, and hollow sealing ring 6 is made up of rubber, air inlet
Mouth 21 is made of stainless steel, and suction nozzle 21 forms with the entirety of hollow sealing ring 6 through vulcanization, logical among suction nozzle 21
Hole connects with hollow ring 23.Trim ring 7 is provided with the circular groove 24 being adapted with hollow sealing ring 6, trim ring 7
Cylindrical to be provided with a strip connected in star 25, the lower section of strip connected in star 25 is evenly equipped with four through holes 26, strip connected in star 25
Both ends are provided with the groove II being adapted with O-ring, for installing O-ring.
As shown in fig. 6, during valve forward direction sealing, pressure medium reaches mouth II from mouth I, i.e. positive pressure 28 promotes peg or spindle 4
Move right, sealing shuts up IV, and pressure medium can not enter valve downstream by mouth V.Now, pressure medium enters along mouth III
Enter hollow sealing ring 6, expanded after being stressed inside hollow sealing ring 6, extrude butterfly plate 3, produce seal pressure sealed valve.
As shown in fig. 7, when valve reversely seals, pressure medium reaches mouth IV from mouth V, i.e. buffer brake 29 promotes peg or spindle 4
It is moved to the left, sealing shuts up II, and pressure medium can not enter valve downstream by mouth I.Now, pressure medium enters along mouth III
Hollow sealing ring 6, expanded after being stressed inside hollow sealing ring 6, extrude butterfly plate 3, produce seal pressure sealed valve.
Claims (3)
- It is 1. a kind of from pressurising bidirectional sealed butterfly valve, bearing（9）Positioned at valve body（1）Bearing hole in, valve shaft passes through bearing（9）Sell Axle（2）It is fixed on butterfly plate（3）Axis hole, valve shaft includes upper valve shaft（10-2）And lower valve shaft（10-1）, lower valve shaft（10-1）Through end Lid（8）It is fixed, upper valve shaft（10-2）Successively with sealing shroud（11）, O-ring（12）, sealing jacket gland（13）After being connected with driving Device（15）Joint, the drive device（15）Butterfly plate can be driven（3）Do 90 ° of rotations, the upper valve shaft（10-2）It is provided with Flat key（14）, it is characterised in that hollow sealing ring（6）Section be annular, hollow sealing ring（6）Embedded in valve body（1）It is interior, institute State hollow sealing ring（6）Through trim ring（7）It is fixed in through hole；Shuttle body（5）With valve body（1）The raised square platform in outside is mutually fitted Match somebody with somebody, shuttle body（5）It is provided with three and valve body（1）On the hole that is adapted of three holes, peg or spindle（4）It is placed in shuttle body（5）It is interior, the shuttle Core（4）By rubber parts（16）With copper fitting（17）Overall vulcanization forms, copper fitting（17）For hollow cylinder, the copper fitting （17）Both ends are provided with annular dovetail slot（18）, copper fitting（17）On be evenly equipped with 2 groove Is（22）, for increase and rubber parts （16）Adhesion strength after vulcanization；Rubber parts（16）Both ends are provided with and shuttle body（5）The conical surface be adapted arc cone（20）, the arc Cone（20）Taper be 90 °, the rubber parts（16）The raised semicircular ring in both ends（19）With shuttle body（5）Plane be adapted.
- It is 2. according to claim 1 from pressurising bidirectional sealed butterfly valve, it is characterised in that the hollow sealing ring（6）On set There is one to carry externally threaded suction nozzle（21）, the hollow sealing ring（6）It is made up of rubber, suction nozzle（21）By stainless steel Into the suction nozzle（21）With hollow sealing ring（6）It is overall to be formed through vulcanization, suction nozzle（21）Middle through hole and hollow ring （23）Connection.
- It is 3. according to claim 1 from pressurising bidirectional sealed butterfly valve, it is characterised in that trim ring（7）Be provided with it is hollow close Seal（6）The circular groove being adapted（24）, the trim ring（7）It is cylindrical to be provided with a strip connected in star（25）, the strip Connected in star（25）Lower section is evenly equipped with four through holes（26）, strip connected in star（25）Both ends are provided with the groove II being adapted with O-ring （27）, for installing O-ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710670551.2A CN107355547A (en) | 2017-08-08 | 2017-08-08 | It is a kind of from pressurising bidirectional sealed butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710670551.2A CN107355547A (en) | 2017-08-08 | 2017-08-08 | It is a kind of from pressurising bidirectional sealed butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107355547A true CN107355547A (en) | 2017-11-17 |
Family
ID=60287527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710670551.2A Pending CN107355547A (en) | 2017-08-08 | 2017-08-08 | It is a kind of from pressurising bidirectional sealed butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107355547A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869764A (en) * | 2018-09-03 | 2018-11-23 | 唐工阀门集团有限公司 | A kind of high leakproofness butterfly valve |
| CN110081189A (en) * | 2019-05-15 | 2019-08-02 | 李琼 | A kind of two-way three-eccentric-butterfly-valve |
| CN110081190A (en) * | 2019-05-15 | 2019-08-02 | 徐国华 | A kind of bidirectional sealed butterfly valve |
| CN110307349A (en) * | 2019-07-11 | 2019-10-08 | 无锡市爱德阀业股份有限公司 | A kind of anti-down streaming butterfly valve |
| CN113137485A (en) * | 2021-04-11 | 2021-07-20 | 中国船舶重工集团公司第七一九研究所 | Integrated side valve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2075733U (en) * | 1990-09-04 | 1991-04-24 | 中国船舶工业总公司第七研究院第七○四研究所 | Automatic seal butterfly valve |
| CN101943270A (en) * | 2010-09-14 | 2011-01-12 | 厦门翰达阀门有限公司 | Butterfly valve extrusion type sealing structure |
| KR101440381B1 (en) * | 2014-01-24 | 2014-09-18 | 주식회사현대밸브 | Sealing structure of metal seat of butterfly valve |
| CN204610893U (en) * | 2015-05-05 | 2015-09-02 | 英诺威阀业有限公司 | A kind of bidirectional bearing metallic sealing butterfly valve |
| CN106051178A (en) * | 2016-07-05 | 2016-10-26 | 英诺威阀业有限公司 | High-performance butterfly valve capable of ensuring double seal |
| CN207034214U (en) * | 2017-08-08 | 2018-02-23 | 英诺威阀业有限公司 | It is a kind of from pressurising bidirectional sealed butterfly valve |
-
2017
- 2017-08-08 CN CN201710670551.2A patent/CN107355547A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2075733U (en) * | 1990-09-04 | 1991-04-24 | 中国船舶工业总公司第七研究院第七○四研究所 | Automatic seal butterfly valve |
| CN101943270A (en) * | 2010-09-14 | 2011-01-12 | 厦门翰达阀门有限公司 | Butterfly valve extrusion type sealing structure |
| KR101440381B1 (en) * | 2014-01-24 | 2014-09-18 | 주식회사현대밸브 | Sealing structure of metal seat of butterfly valve |
| CN204610893U (en) * | 2015-05-05 | 2015-09-02 | 英诺威阀业有限公司 | A kind of bidirectional bearing metallic sealing butterfly valve |
| CN106051178A (en) * | 2016-07-05 | 2016-10-26 | 英诺威阀业有限公司 | High-performance butterfly valve capable of ensuring double seal |
| CN207034214U (en) * | 2017-08-08 | 2018-02-23 | 英诺威阀业有限公司 | It is a kind of from pressurising bidirectional sealed butterfly valve |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869764A (en) * | 2018-09-03 | 2018-11-23 | 唐工阀门集团有限公司 | A kind of high leakproofness butterfly valve |
| CN108869764B (en) * | 2018-09-03 | 2023-08-29 | 唐工阀门集团有限公司 | High leakproofness butterfly valve |
| CN110081189A (en) * | 2019-05-15 | 2019-08-02 | 李琼 | A kind of two-way three-eccentric-butterfly-valve |
| CN110081190A (en) * | 2019-05-15 | 2019-08-02 | 徐国华 | A kind of bidirectional sealed butterfly valve |
| CN110081190B (en) * | 2019-05-15 | 2021-04-30 | 上海沪工阀门厂(集团)有限公司 | Bidirectional sealing butterfly valve |
| CN110307349A (en) * | 2019-07-11 | 2019-10-08 | 无锡市爱德阀业股份有限公司 | A kind of anti-down streaming butterfly valve |
| CN110307349B (en) * | 2019-07-11 | 2024-05-24 | 无锡市爱德阀业股份有限公司 | Backflow-preventing butterfly valve |
| CN113137485A (en) * | 2021-04-11 | 2021-07-20 | 中国船舶重工集团公司第七一九研究所 | Integrated side valve |
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| 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 | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171117 |