CN107269860A - A kind of butterfly valve available for high pressure operating mode - Google Patents
A kind of butterfly valve available for high pressure operating mode Download PDFInfo
- Publication number
- CN107269860A CN107269860A CN201710629986.2A CN201710629986A CN107269860A CN 107269860 A CN107269860 A CN 107269860A CN 201710629986 A CN201710629986 A CN 201710629986A CN 107269860 A CN107269860 A CN 107269860A
- Authority
- CN
- China
- Prior art keywords
- valve rod
- valve
- dish plate
- pin
- wedge
- 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
- F16K1/226—Shaping or arrangements of the sealing
- F16K1/2261—Shaping or arrangements of the sealing the sealing being arranged on the valve member
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- 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
- F16K1/36—Valve members
-
- 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
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The present invention discloses a kind of butterfly valve available for high pressure operating mode, and it includes valve body, dish plate and valve rod, and valve rod parallel to dish plate plane and is provided with pin-and-hole for the through hole sidepiece that valve rod runs through on dish plate, dish plate, and valve rod is provided with the taper groove being connected with the pin-and-hole；Wedge-type pin side abuts the taper groove on pin-and-hole inwall, opposite side clamping valve rod；Between the wedge-type pin and taper groove, the face that both are in contact at least includes a plane；Stem outer circumference above dish plate is provided with packing seal component, and packing seal component includes hold-down grid, filler pressing sleeve, stuffing-box and the filler gasket ring set gradually from the bottom to top, and hold-down grid is fixedly connected with valve body；Below dish plate valve rod week portion and valve body between be provided with Xia Fangchui mechanisms, Xia Fangchui mechanisms include affixed valve rod week portion lower divided ring, valve interior wall be provided with can limit the positive stop lug boss that Xia Fangchui mechanisms are moved up.Butterfly valve valve rod and the dish plate of the present invention with making, therefore can realize part wildcard by wedge-type pin, convenient maintenance, while sealing property and anti-blowing performance and all getting a promotion.
Description
Technical field
The present invention relates to fluid regulation and control technology field, particularly a kind of butterfly valve available for high pressure operating mode.
Background technology
Butterfly valve is a kind of regulating valve simple in construction, for control empty gas and water, steam, various Korrosionsmediums, mud,
The flowing of all kinds fluid such as oil product, liquid metal and radiating medium.It is main on pipeline to play cut-out and throttling action.Butterfly
Valve opening and closing element is a discoidal butterfly plate, is rotated in valve body around the axis of its own, so as to reach the mesh for opening and closing or adjusting
's.The butterfly plate of traditional three eccentricity sealed butterfly valve is matched somebody with somebody and worked using straight pin with valve rod, and butterfly plate is difficult to change with valve rod, sealing
Property and security performance are low, and the production cycle is long, and the market competitiveness is weak.
The content of the invention
It is an object of the invention to provide a kind of butterfly valve available for high pressure operating mode, its dish plate and valve rod part can wildcard, easily
Repair and replacement, while valve rod position good seal performance, is difficult to be blown under high pressure operating mode, it is safe and reliable.
The technical scheme that the present invention takes is：A kind of butterfly valve available for high pressure operating mode, including valve body, dish plate and valve rod,
Provided with passage is opened and closed in valve body, dish plate is arranged in the keying passage, and valve rod can drive dish plate to be rotated along its own axis,
To change the open/close states of the keying passage；
Also include wedge-type pin；Valve rod is set parallel to dish plate plane and for the through hole sidepiece that valve rod runs through on dish plate, dish plate
There is pin-and-hole, valve rod is provided with the taper groove being connected with the pin-and-hole；The wedge-type pin side abuts pin-and-hole inwall, opposite side card
Connect the taper groove on valve rod；Between the wedge-type pin and taper groove, the face that both are in contact at least includes a plane；
Stem outer circumference above dish plate is provided with packing seal component, and packing seal component includes the filler set gradually from the bottom to top
Pressing plate, filler pressing sleeve, stuffing-box and filler gasket ring, hold-down grid are fixedly connected with valve body；
Below dish plate valve rod week portion and valve body between be provided with Xia Fangchui mechanisms, Xia Fangchui mechanisms are included under affixed valve rod week portion
Valve interior wall above divided ring, stem outer circumference, Xia Fangchui mechanisms, which is provided with, can limit the positive stop lug boss that Xia Fangchui mechanisms are moved up.
Further, it is additionally provided with dish plate in the screwed hole for connecting the pin-and-hole, screwed hole and is provided with holding screw, tightening
The screw rod end abutment wedge-type pin end of screw.Long-term use can be avoided to cause wedge-type pin to skid off, between influence valve rod and dish plate
Interfix.
It is preferred that, the peripheral surface of the wedge-type pin is connected by a plane with a curved surface to be constituted, the plane and curved surface point
Omnidirectional does not extend on the length direction of wedge-type pin；Pin-and-hole side inwall on dish plate connects with the curved surface of wedge-type pin, on valve rod
Taper trench bottom be plane, wedge-type pin surface connects for the side of plane with the taper trench bottom on valve rod.The wedge-type pin can
Realized by a cylinder through oblique corner cut, i.e., described plane can be the plane with certain angle of inclination.
Further, dish plate peripheral part is provided with sealing ring, and sealing ring side abuts dish plate body, and opposite side is provided with pressure
Ring, the circumferentially fixed connection dish plate of pressure ring, and pressure ring external diameter is more than sealing ring internal diameter.
It is preferred that, pressure ring and sealing ring are provided with interconnected pin-and-hole, and pin-and-hole is interior to be provided with fool proof pin.Pin-and-hole and fool proof pin
Quantity may be configured as one or more, its can be used for sealing ring is positioned, it is to avoid sealing ring is anti-loaded, and avoid seal
Ring is in dish plate opening-closing process because the frictional force between valve body produces displacement so that the opening-closing process of dish plate is more smooth.
Further, packing seal component also includes packing, and packing is respectively arranged above and below dish plate, outside valve rod
Between week and valve body.The setting of packing can further improve the sealing effectiveness of stem outer circumference.
Further, the Xia Fangchui mechanisms also include preventing blowing plate, anti-to blow divided ring under plate is connected, and are sheathed on valve rod week
Portion；Positive stop lug boss is set along the circumferential omnidirectional of valve interior wall, and the anti-plate external diameter that blows is more than positive stop lug boss inward flange diameter.When butterfly valve work
In high pressure operating mode, when valve rod is by upward blowing force, divided ring will produce larger shearing, it is to avoid valve rod is blown out upwards.And
It is anti-to blow while being arranged on that realization is anti-to blow effect of plate, also the rotation of valve rod is unaffected.
Further, valve rod week portion and filler pressing sleeve between be provided with upper divided ring.Upper divided ring is divided into lower divided ring
The upper and lower part of valve rod, can further prevent that valve rod is blown when butterfly valve is applied to high pressure operating mode.
Further, in addition to key, valve stem tip side is axially provided with keyway, the side insert key of the key along valve rod
In groove.Being provided for for key and keyway is circumferentially fixed between valve rod and other mechanisms for being used to drive valve rod to rotate.
Further, in addition to dust-proof frame, dust-proof frame includes housing and inner chamber, and valve body top is fixed in housing lower end
End, the top of filler pressing sleeve, the second divided ring and hold-down grid are located in the inner chamber, and valve rod runs through the housing of dust-proof frame
And inner chamber, valve stem tip is above dust-proof frame.The impurity that dust-proof frame can be reduced in environment enters inside butterfly valve, influences valve
The sealing effectiveness of bar portion position.
Beneficial effect
（1）The valve rod of butterfly valve of the present invention is matched somebody with somebody with dish plate by wedge-type pin to be made, and realizes both positioning and driving relationships, wedge-type pin
With making mode so that valve rod and dish plate are influenceed smaller when changing by square structure, therefore can realize the part of valve rod and dish plate
Wildcard, while wedge-type pin connected construction is simple, easy for installation, is convenient for changing maintenance；
（2）The setting of packing seal component causes the sealing property at valve rod to get a promotion, and the setting of packing up and down is further carried
The sealing property of butterfly valve is risen so that butterfly valve of the present invention can be applied to the operating mode that low leakage is required；
（3）The sealing ring of dish plate periphery is positioned using pressure ring and fool proof pin, may be such that in butterfly plate opening-closing process, sealing ring and
The interference of valve body is smaller, so as to realize that opening-closing process is smooth, while fool proof pin ensure that sealing ring will not wrongly installed direction；
（4）The setting of Fang Chui mechanisms and divided ring up and down, it is ensured that high pressure operating mode lower valve rod will not be blown, even and if valve rod is disconnected
Also valve body will not be blown out by pressure after splitting, improve security.
Brief description of the drawings
Fig. 1 show butterfly valve overall structure diagram of the present invention；
Fig. 2 show butterfly valve structure front view of the present invention；
Fig. 3 show A-A profile structure diagram in Fig. 2；
Fig. 4 show left view cut-away section structural representation in Fig. 2；
Fig. 1 is into Fig. 4,1- valve bodies, 2a- dish plates, 2b- sealing rings, 2c- dish plate pressure rings, 2d- soket head cap screws, 2e- fool proof pins,
Hexagonal cylindrical end holding screw in 3- valve rods, 4a wedge-type pins, 4b-, 5- bottoms, 6- keys, 7a- stuffing-boxes, 7b- filler gasket rings, 7c-
Divided ring under packing, 7d- pads, 8a-, 8b- is anti-to be blown outside plate, the upper divided rings of 8c-, 10- filler pressing sleeves, 11- hold-down grids, 12a-
Hex bolts, 12b- spring washers, 13a- studs, 13b- nuts, 14- dust-proof frames, 15a- outer-hexagonal bolts, 15b- spring pads
Circle, 15c- straight pins.
Embodiment
Further described below in conjunction with the drawings and specific embodiments.
With reference to Fig. 1 to Fig. 4, the present invention can be used for the butterfly valve of high pressure operating mode, including valve body 1, dish plate 2a and valve rod 3, valve body
Interior provided with keying passage, dish plate is arranged in the keying passage, and valve rod can drive dish plate along the rotation of its own axis, to change
Become the open/close states for opening and closing passage；
With reference to Fig. 3 and Fig. 4, present invention additionally comprises wedge-type pin 4a；Valve rod supplies valve parallel to dish plate plane and on dish plate, dish plate
The through hole sidepiece that bar runs through is provided with pin-and-hole, and valve rod is provided with the taper groove being connected with the pin-and-hole；The wedge-type pin side
Abut the taper groove on pin-and-hole inwall, opposite side clamping valve rod；Between the wedge-type pin and taper groove, the face that both are in contact is extremely
Include a plane less；
Stem outer circumference above dish plate is provided with packing seal component, and packing seal component includes the filler set gradually from the bottom to top
Pressing plate 11, filler pressing sleeve 10, stuffing-box 7a and filler gasket ring 7b, hold-down grid 11 are fixedly connected with valve body 1；
Below dish plate valve rod week portion and valve body between be provided with Xia Fangchui mechanisms, Xia Fangchui mechanisms are included under affixed valve rod week portion
Valve interior wall above divided ring 8a, stem outer circumference, Xia Fangchui mechanisms, which is provided with, can limit the limit convex that Xia Fangchui mechanisms are moved up
Platform.
Embodiment
It is additionally provided with dish plate in the screwed hole for connecting the pin-and-hole, screwed hole and is provided with holding screw 4b, holding screw
Screw rod end abutment wedge-type pin 4a ends.Long-term use can be avoided to cause wedge-type pin to skid off, the phase between influence valve rod and dish plate
It is mutually fixed.
Constituted as shown in figure 4, the peripheral surface of wedge-type pin is connected by a plane with a curved surface, the plane is distinguished with curved surface
Omnidirectional extends on the length direction of wedge-type pin；Pin-and-hole side inwall on dish plate connects with the curved surface of wedge-type pin, on valve rod
Taper trench bottom is plane, and wedge-type pin surface connects for the side of plane with the taper trench bottom on valve rod.The wedge-type pin is by one
Cylinder realizes that is, described plane can be the plane with certain angle of inclination through oblique corner cut.
Dish plate peripheral part is provided with sealing ring 2b, and sealing ring side abuts dish plate body, and opposite side is provided with pressure ring 2c, pressure ring
Circumferentially fixed connection dish plate, and pressure ring external diameter is more than sealing ring internal diameter.When keying passage is completely closed, sealing petticoat is complete
To abutting valve body.
Pressure ring 2c and sealing ring 2b is provided with interconnected pin-and-hole, and pin-and-hole is interior to be provided with fool proof pin 2e.Pin-and-hole and fool proof pin
Quantity be set to 1, for being positioned to sealing ring, it is to avoid sealing ring is anti-loaded, and avoid sealing ring dish plate open and close
During because between valve body frictional force produce displacement so that the opening-closing process of dish plate is more smooth.
Xia Fangchui mechanisms also include preventing blowing in plate 8b, Xia Fangchui mechanisms, and anti-blow between plate 8b and valve body is interference fits, with
Coordinate between valve rod for gap, be interference fits between lower divided ring 8a and valve rod.Specifically, anti-blow divided ring under plate is connected
8a, is sheathed on valve rod week portion；Positive stop lug boss is set along the circumferential omnidirectional of valve interior wall, and the anti-plate external diameter that blows is more than positive stop lug boss inward flange
Diameter.When butterfly valve works in high pressure operating mode, when valve rod is by upward blowing force, divided ring will produce larger shearing, it is to avoid valve
Bar is blown out upwards.And it is anti-blow while being arranged on that realization is anti-to blow effect of plate, also the rotation of valve rod is unaffected.
Valve rod week portion and filler pressing sleeve between be provided with upper divided ring.Upper divided ring is divided into the top of valve rod with lower divided ring
And bottom, it can further prevent that valve rod is blown when butterfly valve is applied to high pressure operating mode.
Packing seal component also includes packing 7c, and packing is respectively arranged above and below dish plate, stem outer circumference and valve
Between body.As shown in figure 4, upper packing is located at below filler gasket ring, lower packing is located at the anti-of Xia Fangchui mechanisms and blown above plate.Packing
Setting can further improve the sealing effectiveness of stem outer circumference.
Also include key 6, valve stem tip side is axially provided with keyway, the side insertion keyway of the key along valve rod.Key
And keyway be provided for valve rod and it is other be used for drive valve rod rotate mechanism between it is circumferentially fixed.
Also include dust-proof frame 14, dust-proof frame includes housing and inner chamber, and top end of the valve body, filler pressure are fixed in housing lower end
The top of set, the second divided ring and hold-down grid are located in the inner chamber, housing and inner chamber of the valve rod through dust-proof frame, valve
Bar top is located above dust-proof frame.The impurity that dust-proof frame can be reduced in environment enters inside butterfly valve, influence valve rod position
Sealing effectiveness.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, some improvement and deformation can also be made, these improve and deformed
Also it should be regarded as protection scope of the present invention.
Claims (10)
1. provided with passage is opened and closed in a kind of butterfly valve available for high pressure operating mode, including valve body, dish plate and valve rod, valve body, dish plate is set
It is placed in the keying passage, and valve rod can drive dish plate to be rotated along its own axis, to change the keying of the keying passage
State；It is characterized in that being：
Also include wedge-type pin；Valve rod is set parallel to dish plate plane and for the through hole sidepiece that valve rod runs through on dish plate, dish plate
There is pin-and-hole, valve rod is provided with the taper groove being connected with the pin-and-hole；The wedge-type pin side abuts pin-and-hole inwall, opposite side card
Connect the taper groove on valve rod；Between the wedge-type pin and taper groove, the face that both are in contact at least includes a plane；
Stem outer circumference above dish plate is provided with packing seal component, and packing seal component includes the filler set gradually from the bottom to top
Pressing plate, filler pressing sleeve, stuffing-box and filler gasket ring, hold-down grid are fixedly connected with valve body；
Below dish plate valve rod week portion and valve body between be provided with Xia Fangchui mechanisms, Xia Fangchui mechanisms are included under affixed valve rod week portion
Valve interior wall above divided ring, stem outer circumference, Xia Fangchui mechanisms, which is provided with, can limit the positive stop lug boss that Xia Fangchui mechanisms are moved up.
2. the butterfly valve according to claim 1 available for high pressure operating mode, it is characterised in that：Connection institute is additionally provided with dish plate
State and holding screw, the screw rod end abutment wedge-type pin end of holding screw are provided with the screwed hole of pin-and-hole, screwed hole.
3. the butterfly valve according to claim 1 available for high pressure operating mode, it is characterised in that：The peripheral surface of the wedge-type pin
Connected by a plane with a curved surface and constituted, omnidirectional extends the plane on the length direction of wedge-type pin respectively with curved surface；Dish plate
On pin-and-hole side inwall connect with the curved surface of wedge-type pin, the taper trench bottom on valve rod be plane, wedge-type pin surface be plane
Side connect with the taper trench bottom on valve rod.
4. the butterfly valve according to claim 1 available for high pressure operating mode, it is characterised in that：Dish plate peripheral part is provided with sealing
Ring, sealing ring side abuts dish plate body, and opposite side is provided with pressure ring, the circumferentially fixed connection dish plate of pressure ring, and pressure ring external diameter is big
In sealing ring internal diameter.
5. the butterfly valve according to claim 1 available for high pressure operating mode, it is characterised in that：Pressure ring and sealing ring are provided with phase
Fool proof pin is provided with intercommunicated pin-and-hole, pin-and-hole.
6. the butterfly valve according to claim 1 available for high pressure operating mode, it is characterised in that：Packing seal component also includes disk
Root, packing is respectively arranged above and below dish plate, between stem outer circumference and valve body.
7. the butterfly valve according to claim 1 available for high pressure operating mode, it is characterised in that：The Xia Fangchui mechanisms also include
It is anti-to blow plate, it is anti-to blow divided ring under plate is connected, it is sheathed on valve rod week portion；Positive stop lug boss is set along the circumferential omnidirectional of valve interior wall, anti-to blow
Plate external diameter is more than positive stop lug boss inward flange diameter.
8. the butterfly valve according to claim 1 available for high pressure operating mode, it is characterised in that：Valve rod week portion with filler pressing sleeve it
Between be provided with upper divided ring.
9. the butterfly valve according to claim 1 available for high pressure operating mode, it is characterised in that：Also include key, valve stem tip one
Side is axially provided with keyway, the side insertion keyway of the key along valve rod.
10. the butterfly valve according to claim 1 available for high pressure operating mode, it is characterised in that：Also include dust-proof frame, it is dust-proof
Support includes housing and inner chamber, and top end of the valve body, the top of filler pressing sleeve, the second divided ring and filler pressure are fixed in housing lower end
Plate is located in the inner chamber, and housing and inner chamber of the valve rod through dust-proof frame, valve stem tip are located above dust-proof frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710629986.2A CN107269860A (en) | 2017-07-28 | 2017-07-28 | A kind of butterfly valve available for high pressure operating mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710629986.2A CN107269860A (en) | 2017-07-28 | 2017-07-28 | A kind of butterfly valve available for high pressure operating mode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107269860A true CN107269860A (en) | 2017-10-20 |
Family
ID=60075237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710629986.2A Pending CN107269860A (en) | 2017-07-28 | 2017-07-28 | A kind of butterfly valve available for high pressure operating mode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107269860A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110410563A (en) * | 2019-08-26 | 2019-11-05 | 上海冠龙阀门机械有限公司 | A kind of intellectual worm gear Hand-operated butterfly valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130056667A1 (en) * | 2011-09-01 | 2013-03-07 | Jianchao Shu | Triple Offset Butterfly Valve and Rotary Valves For Sever Services |
| CN203717964U (en) * | 2014-02-26 | 2014-07-16 | 无锡和佳仪器仪表有限公司 | Four-eccentric butterfly valve structure for preventing valve rod from rushing out of valve body |
| CN105156699A (en) * | 2015-09-21 | 2015-12-16 | 中船重工特种设备有限责任公司 | Seal-ring-bearing three-eccentric seal butterfly valve |
| CN106545663A (en) * | 2015-09-17 | 2017-03-29 | Vag阀门有限公司 | Stop valve |
| CN207064663U (en) * | 2017-07-28 | 2018-03-02 | 昆山维萨阀门有限公司 | A kind of butterfly valve available for high pressure operating mode |
-
2017
- 2017-07-28 CN CN201710629986.2A patent/CN107269860A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130056667A1 (en) * | 2011-09-01 | 2013-03-07 | Jianchao Shu | Triple Offset Butterfly Valve and Rotary Valves For Sever Services |
| CN203717964U (en) * | 2014-02-26 | 2014-07-16 | 无锡和佳仪器仪表有限公司 | Four-eccentric butterfly valve structure for preventing valve rod from rushing out of valve body |
| CN106545663A (en) * | 2015-09-17 | 2017-03-29 | Vag阀门有限公司 | Stop valve |
| CN105156699A (en) * | 2015-09-21 | 2015-12-16 | 中船重工特种设备有限责任公司 | Seal-ring-bearing three-eccentric seal butterfly valve |
| CN207064663U (en) * | 2017-07-28 | 2018-03-02 | 昆山维萨阀门有限公司 | A kind of butterfly valve available for high pressure operating mode |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110410563A (en) * | 2019-08-26 | 2019-11-05 | 上海冠龙阀门机械有限公司 | A kind of intellectual worm gear Hand-operated butterfly valve |
| CN110410563B (en) * | 2019-08-26 | 2024-05-03 | 上海冠龙阀门节能设备股份有限公司 | Intelligent worm gear manual butterfly valve |
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