CN108518490A - A kind of low flow resistance butterfly valve of split type shock resistance - Google Patents
A kind of low flow resistance butterfly valve of split type shock resistance Download PDFInfo
- Publication number
- CN108518490A CN108518490A CN201810440591.2A CN201810440591A CN108518490A CN 108518490 A CN108518490 A CN 108518490A CN 201810440591 A CN201810440591 A CN 201810440591A CN 108518490 A CN108518490 A CN 108518490A
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- seal section
- valve body
- flange seal
- valve
- flange
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- 230000035939 shock Effects 0.000 title claims abstract description 20
- 238000007789 sealing Methods 0.000 claims abstract description 82
- 239000002184 metal Substances 0.000 claims description 20
- 229910052751 metal Inorganic materials 0.000 claims description 20
- 230000003139 buffering effect Effects 0.000 claims description 13
- 238000009434 installation Methods 0.000 claims description 7
- 239000002365 multiple layer Substances 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 229910002804 graphite Inorganic materials 0.000 claims description 2
- 239000010439 graphite Substances 0.000 claims description 2
- 238000006467 substitution reaction Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 210000004907 gland Anatomy 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 210000000867 larynx Anatomy 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 230000008439 repair process Effects 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
-
- 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
- F16K1/46—Attachment of sealing rings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The present invention provides a kind of split type shock resistance low flow resistance butterfly valve, it includes valve body, the side of the valve body is equipped with flange seal section, both valve body and flange seal section cooperatively form inner chamber body, butterfly plate is equipped in the inner chamber body, the butterfly plate is linked by valve rod and executing agency, it is equipped with sealing structure at the valve body and the cooperation of flange seal section, and the sealing structure is limited from flange seal section with valve body and flange seal section, and constitute sealing cooperation with butterfly plate, cancel the fastener and sealing clamp in valve body, and sealing clamp function is replaced by flange seal section, the function of the fastener in fastener substitution valve body in flange seal section, increase the locking measures of fastener, prevent the fastener on vibrating conduit from loosening, improve sealing stability.
Description
Technical field
The present invention relates to a kind of valves, and in particular to a kind of low flow resistance butterfly valve of split type shock resistance.
Background technology
In complicated circuit design, need certain special pressure vessels, for corrosive medium relatively strong, anti-vibration with
And in the more demanding hull pipeline of shock resistance.The low flow resistance butterfly valve of split type shock resistance really realizes zero fastening in valve internal
Part expands the orifice size of valve, realizes relatively low flow resistance.Meanwhile valve can bear it is lateral, vertical caused by non-explosion
To and impact of collision, and can bear due to being impacted caused by shafting operating and ships attitudes vibration etc..Therefore, it develops split type
The low flow resistance butterfly valve of shock resistance is not only to meet the demand for development of butterfly valve technology, and meets the reality of the client in circuit design
Demand.
Three-eccentric-butterfly-valve is widely answered as a kind of component being used for realizing pipe-line system break-make and flow control
With.It needs that sealing structure is arranged between the valve seat and butterfly plate of three-eccentric-butterfly-valve, and due to the larger original of pressure medium in valve chamber
Cause, sealing structure deformed under pressure medium it is larger, easily occur medium leakage problem, lead to seal failure, it is therefore desirable to close
Pressing plate or ring pressing construction is arranged in seal structure, carrys out fixing seal structure, makes it that can also keep preferable under larger pressure medium
Sealing effect, but pressing plate or trim ring are installed, the installation of entire butterfly valve can be caused complex.
Invention content
For the technical deficiency more than overcoming, the present invention provides a kind of split type shock resistance low flow resistance butterfly valve.
The present invention provides a kind of split type shock resistance low flow resistance butterfly valve comprising the side of valve body, the valve body is equipped with method
Blue seal section, both valve body and flange seal section cooperatively form inner chamber body, and butterfly plate is equipped in the inner chamber body, and the butterfly plate is logical
It crosses valve rod to be linked with executing agency, sealing structure, and the sealing is equipped at the valve body and the cooperation of flange seal section
Structure is limited from flange seal section with valve body and flange seal section, and constitutes sealing cooperation with butterfly plate.
The sealing structure is multiple-layer metal sealing ring, and the multiple-layer metal sealing ring is by metal steel disc and flexible stone
Ink is suppressed.
The sealing structure is simple metal sealing ring, and the one side of the simple metal sealing ring and valve body contact is equipped with winding
Formula gasket.
The sealing structure is rubber seal.
The rubber seal includes head, middle part and tail portion, and the head has so that the vertical butterfly plate of sealing surface
The inclination angle of setting, the tail portion are embedded in the storage tank being made of valve body and flange seal section.
The inner cavity of the valve body and flange seal section is hemisphere face, and a complete ball is formed after the two cooperation installation
Face.
Several reinforcing ribs are arranged in the neck of the valve body.
It is additionally provided with anti-blow structure on the outside of the flange seal section.
The anti-blow structure includes the Limit screw that several one end are fixedly connected in valve body and flange seal section, described
The other end of Limit screw sequentially passes through flange seal section, buffering flange is connect with companion flange, the flange seal Duan Yuhuan
It rushes between flange equipped with elastic component, sealing structure is equipped between the buffering flange and flange seal section.
The outside of the flange seal section is equipped with convex indent, and the corresponding convex indent is not surveyed equipped with pressing plate, the pressure
Plate be equipped with oppositely arranged convex indent, be folded with I-shaped tooth form rubber ring between the two.
Beneficial effects of the present invention：Cancel the fastener and sealing clamp in valve body, and is replaced by flange seal section and sealed
Pressing plate function, the function of the fastener in fastener substitution valve body in flange seal section, increases the locking measures of fastener, prevents
Only fastener loosens on vibrating conduit, improves sealing stability.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention.
Fig. 2 is the diagrammatic cross-section of the present invention.
Fig. 3 is the enlarged diagram at A in Fig. 2.
Fig. 4 is the enlarged diagram at C in Fig. 3.
Fig. 5 is the enlarged diagram of the embodiment 1 at B in Fig. 2.
Fig. 6 is the enlarged diagram of the embodiment 2 at B in Fig. 2.
Fig. 7 is the enlarged diagram of the embodiment 3 at B in Fig. 2.
In figure, 1. valve bodies, 2. locating pads, 3. straight pins, 4. butterfly plates, 5. valve rods, 6. flat keys, 7.T profile shafts are held, 8. prevent blowing
Go out gasket, 9. glands, 10.O types circle, 11.n words grooved metal gasket, 12. sealing rings, 13. flange seal section, 14. wound form pad
Piece, 15. nuts, 16. toothed washers, 17. Limit screws, 18. springs, 19. buffering flanges, 20. jam nuts, 21. holding screws,
22. toothed washer, 23. pressing plates, 24. I-shaped tooth form rubber rings.
Specific implementation mode
Embodiments of the present invention is further illustrated below in conjunction with the accompanying drawings：
As shown, the present invention provides a kind of split type shock resistance low flow resistance butterfly valve comprising valve body, the side of the valve body 1
Equipped with flange seal section 13, both valve body 1 and flange seal section 2 cooperatively form inner chamber body, and butterfly plate is equipped in the inner chamber body,
The butterfly plate 4 is linked by valve rod 5 with executing agency, and the butterfly plate is connect by straight pin 3 with valve rod, the execution machine
Structure can be installed on square set, while the square set is directly anchored to the upper end of valve body, and the valve rod passes through rectangular branch
Frame is arranged, and is equipped with sealing structure at the valve body and the cooperation of flange seal section, and the sealing structure is limited by flange seal section
Position constitutes sealing cooperation at the cooperation of valve body 1 and flange seal section 13, and with butterfly plate, and sealing structure is mounted on valve body 1, method
Blue seal section substitution sealing clamping ring function pushes down sealing structure, and valve seat size can suitably expand, and increase valve stream to greatest extent
Logical area, reduces flow resistance.Cancel the fastener and sealing clamp in valve body, and sealing clamp function replaced by flange seal section,
The function of the fastener in fastener substitution valve body in flange seal section, increases the locking measures of fastener, prevents from vibrating
Fastener loosens on pipeline, improves sealing stability.
Connection type between valve body and flange seal section is flanged joint, is threaded hole flange, flange seal on valve body
Duan Shangwei unthreaded hole flanges use studding Stud connection, body cavity body and the inner chamber body of flange seal section to form one between the two
Complete ball-type cavity, the butterfly plate can rotate in spherical cavity, and the circumferential direction of butterfly plate constitutes sealing pair with sealing structure.
Valve body and flange seal section are all made of four flange arrangements, can enhance body strength, improve the stress of sealing station
Situation.
The sealing structure is multiple-layer metal sealing ring, and the multiple-layer metal sealing ring is by metal steel disc and flexible stone
Ink is suppressed, and the graphite linings of wherein sealing structure are in contact with valve base surface.
The sealing structure is simple metal sealing ring, and the one side of the simple metal sealing ring and valve body contact is equipped with winding
Formula gasket, the sealing ring have the thicker steel disc of monoblock to be process, because valve base surface and sealing ring bottom surface are face-to-face metals
Contact cannot generate preferable sealing effect, therefore increase by a circle spiral wound gasket 14.
The sealing structure is rubber seal.
The above multiple-layer metal sealing ring, simple metal sealing ring and rubber seal are referred to as sealing ring 12.
The rubber seal includes head, middle part and tail portion, and the head has so that the vertical butterfly plate of sealing surface
The inclination angle of setting, the tail portion are embedded in the storage tank being made of valve body and flange seal section 13, and tail portion makes sealing ring 12
It firmly locks in slot, prevents sealing ring 12 from pulling position by external force.It is formed when the storage tank is with valve body and flange seal section,
It is more convenient when installation, simultaneously because the setting of storage tank, can be pulled to avoid sealing ring by external force.
Body cavity is processed into hemisphere face with flange seal section inner cavity, and a complete ball is formed after the two cooperation installation
Face, it can be achieved that approximate zero flow resistance of all-pass run-off requirement.
Butterfly plate uses airflow design, reduces flow resistance, when flow resistance requirement is not very high, through-type set can be used in body cavity
Meter.
Cancel the fastener and sealing ring pressing plate in valve body, sealing ring 12 is mounted on 1 right side of valve body, by flange seal section 13
Replace sealing clamp function, the function of the fastener in fastener substitution valve body in flange seal section 13, valve seat larynx diameter size
More than valve latus rectum, increase valve circulation area to greatest extent, reduces flow resistance.The external of sealing fastener is easy to the anti-of fastener
Pine can prevent the fastener on vibrating conduit from loosening using toothed washer, improve sealing stability.Flange seal section and valve body
It is attached by flange, gasket uses n words grooved metal gasket 11, can form multiple-sealed pair, increases sealing reliability, prevents from being situated between
Matter leaks, while being positioned between the two using straight mouth, ensures the accuracy of assembly.The structural repair is convenient, easy to operate, only needs
Fastener and Limit screw are removed, flange seal section is moved a distance to the right can replace sealing ring on line, realize
Emergency maintenance in two hours.
The neck of the valve body is arranged several reinforcing ribs and improves the overall stiffness of valve for improving stress state.
The inner chamber body in internal diameter it is big, the small waist-drum-shaped of outer diameter, can also use it is through-type, simultaneously because eliminating valve body
Internal clamp, sealing clamping ring, body cavity may be used that through-type or internal diameter is big, the small waist-drum-shaped of outer diameter, and orifice size expands,
Reduce circulating resistance.
And the valve rod of this valve uses the design of whole valve rod, can improve valve overall stability.
Body cavity and butterfly plate surface simultaneously for valve are all by processing or fine grinding, all acute angle roundings of body cavity
Angle.
It is additionally provided with anti-blow structure on the outside of the flange seal section.It is improved by compensation of pipeline connector, increases spring
Impulse force collocation structure improves the force-bearing situation of valve body, reduces valve body deformation, ensures sealing performance.
The anti-blow structure includes the Limit screw that several one end are fixedly connected in valve body 1 and flange seal section 13
17, the other end of the Limit screw 17 sequentially passes through flange seal section 13, buffering flange 19 is connect with companion flange, the method
It is equipped with elastic component between blue seal section and buffering flange, sealing structure is equipped between the buffering flange and flange seal section.
Wherein one end of Limit screw is fixed on by nut and toothed washer on valve body and flange seal section, the other end
Also cross flange seal section, the flange hole of buffering flange and companion flange, there are two jam nuts 20 for installation at its end, come
It realizes limit function, a piece Limit screw is installed at interval of two bolts hole.On the right side of flange seal section and 19 left side of buffering flange
Flange face all carries the boss slightly larger than bolt hole, and boss quantity is consistent with Limit screw quantity, and elastic component passes through Limit screw
It is movably arranged on boss
The outside of the flange seal section is equipped with convex indent, and the corresponding convex indent is not surveyed equipped with pressing plate, on the pressing plate
Equipped with oppositely arranged convex indent, be folded with I-shaped tooth form rubber ring between the two, it is equal with pressing plate on the right side of flange seal section
I-shaped tooth form rubber ring 24 can be clamped when working in coordination, the tail dimension of I-shaped tooth form sealing ring is more than waist sizes, slow
When rushing flange and moving back and forth, rubber ring is prevented to be drawn out, I-shaped tooth form sealing ring can form multiple-sealed, can prevent well
Medium leaks, while outside by isolated from contaminants such as dust, water.
The elastic component is spring 18, and the main function of spring is to bear impact force heterogeneous in buffering Flange Plane
When, buffer portion impact force reduces buffering flange Oscillation Amplitude, makes I-shaped tooth form sealing ring that can uniformly support big change radially
Shape improves sealing performance.
Buffering flange is returned to initial position by the pulling force of pipeline itself, and to prevent from excessively replying, Limit screw end
End is equipped with jam nut.
Under impact and vibration environment, to prevent any part of the valve rod of damage from being projected from valve, set in valve body upper end
The anti-blow structure of valve rod is set, the anti-blow structure of valve rod now designed is by the anti-blow gasket 8 of T-type bearing, gland 9, O-ring 10
Composition.T-type bearing 7 provides support for anti-blow gasket, and O-ring is installed along with sealing axle sleeve in valve stuffing box, can
Ensure sealing performance, and rigid support can be provided for anti-blow gasket.Valve stuffing box inner valve stem annular groove lower plane with it is close
Plane is in the same plane on envelope axle sleeve, and anti-blow gasket 8 is double of open form formula, on valve rod 5, and uses gland
9, anti-blow gasket is fixed in valve body stuffing-box by the rigid members such as stud and nut, and anti-blow reliability is high, detachable maintaining side
Just.
Annular groove position where anti-blow gasket is the worst position of the torque carrying capability of valve rod, if because of torque mistake
Valve rod is set to damage greatly, which damages at first, and because it is except pressure boundary, will not even if the position is broken
So that valve rod is projected out of valve body or there is a situation where dielectric leakages, there is higher safety.
Annular groove is processed on valve rod can reduce processing capacity, improve efficiency, enterprise benefit.Anti-blow gasket is in valve
When generating abrasion in bar frequent movement, dismounting and change can be carried out, it is versatile, it is easy to maintenance.Because flat key is mounted on valve rod, valve
When bar is blown out, flat key is stopped by T-type bearing, has certain anti-blow function.
T-type bearing has both positioning function, realizes the butterfly plate positioning function upward in stem shaft together with locating pad 2, prevents
Butterfly plate valve assembly, use, dismounting and debugging when above and below play, instead of straight pin support butterfly plate function, improve valve can
By property, at the same the T-type bearing when valve rod rotates from lubricating action, while facilitate installation valve body in flat key.
Butterfly plate and valve rod use the drive mechanism that flat key 6 and straight pin 3 are combined, can carry higher driving torque and
It can make to realize positive drive between the two, valve is made not will produce idle running.
Embodiment is not construed as limitation of the present invention, any spiritual improvements introduced based on the present invention, all Ying Ben
Within the protection domain of invention.
Claims (10)
1. a kind of low flow resistance butterfly valve of split type shock resistance, it is characterised in that：It includes valve body, and the side of the valve body is equipped with flange
Seal section, both valve body and flange seal section cooperatively form inner chamber body, and butterfly plate is equipped in the inner chamber body, and the butterfly plate passes through
Valve rod is linked with executing agency, is equipped with sealing structure at the valve body and the cooperation of flange seal section, and the sealing is tied
Structure is limited from flange seal section with valve body and flange seal section, and constitutes sealing cooperation with butterfly plate.
2. a kind of low flow resistance butterfly valve of split type shock resistance according to claim 1, which is characterized in that the sealing structure is
Multiple-layer metal sealing ring, the multiple-layer metal sealing ring are suppressed by metal steel disc and soft graphite.
3. a kind of low flow resistance butterfly valve of split type shock resistance according to claim 1, which is characterized in that the sealing structure is
Simple metal sealing ring, and the one side of the simple metal sealing ring and valve body contact is equipped with spiral wound gasket.
4. a kind of low flow resistance butterfly valve of split type shock resistance according to claim 1, which is characterized in that the sealing structure is
Rubber seal.
5. a kind of low flow resistance butterfly valve of split type shock resistance according to claim 4, which is characterized in that the rubber seal
Including head, middle part and tail portion, the head has an inclination angle so that sealing surface vertical butterfly plate setting, in the tail portion
In the storage tank being made of valve body and flange seal section.
6. the low flow resistance butterfly valve of a kind of split type shock resistance according to claims 1 or 2 or 3 or 4 or 5, which is characterized in that institute
The inner cavity for stating valve body and flange seal section is hemisphere face, and a complete spherical surface is formed after the two cooperation installation.
7. the low flow resistance butterfly valve of a kind of split type shock resistance according to claims 1 or 2 or 3 or 4 or 5, which is characterized in that institute
Several reinforcing ribs are arranged in the neck for stating valve body.
8. a kind of low flow resistance butterfly valve of split type shock resistance according to claim 1, which is characterized in that the flange seal section
Outside be additionally provided with anti-blow structure.
9. a kind of low flow resistance butterfly valve of split type shock resistance according to claim 8, which is characterized in that the anti-blow structure
Including the Limit screw that several one end are fixedly connected in valve body and flange seal section, the other end of the Limit screw is worn successively
Cross flange seal section, buffering flange connect with companion flange, the flange seal section and buffer between flange equipped with elastic component, institute
It states and is equipped with sealing structure between buffering flange and flange seal section.
10. a kind of low flow resistance butterfly valve of split type shock resistance according to claim 9, which is characterized in that the flange seal
The outside of section is equipped with convex indent, and the corresponding convex indent is not surveyed equipped with pressing plate, the pressing plate be equipped with it is oppositely arranged
Convex indent is folded with I-shaped tooth form rubber ring between the two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810440591.2A CN108518490A (en) | 2018-05-10 | 2018-05-10 | A kind of low flow resistance butterfly valve of split type shock resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810440591.2A CN108518490A (en) | 2018-05-10 | 2018-05-10 | A kind of low flow resistance butterfly valve of split type shock resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108518490A true CN108518490A (en) | 2018-09-11 |
Family
ID=63430126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810440591.2A Pending CN108518490A (en) | 2018-05-10 | 2018-05-10 | A kind of low flow resistance butterfly valve of split type shock resistance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108518490A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB927502A (en) * | 1961-02-10 | 1963-05-29 | Frank Edward Swain | Improvements in butterfly valves |
| CN2366621Y (en) * | 1999-02-12 | 2000-03-01 | 章祖翼 | Shortened neck and broadened cavity type single side wall spherical surface and double sealing butterfly valve |
| CN2890526Y (en) * | 2006-01-13 | 2007-04-18 | 章祖翼 | Limit telescopic butterfly valve |
| CN201111575Y (en) * | 2007-08-29 | 2008-09-10 | 张启权 | Bidirectional pressure metallic hard sealing butterfly valve |
| CN203463683U (en) * | 2013-09-30 | 2014-03-05 | 浙江威肯特泵业有限公司 | Multi-tooth-surface soft sealing butterfly valve |
| CN105864439A (en) * | 2016-06-03 | 2016-08-17 | 江南阀门有限公司 | Regulating type metal sealed butterfly valve |
| CN208185484U (en) * | 2018-05-10 | 2018-12-04 | 江南阀门有限公司 | A kind of low flow resistance butterfly valve of split type shock resistance |
-
2018
- 2018-05-10 CN CN201810440591.2A patent/CN108518490A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB927502A (en) * | 1961-02-10 | 1963-05-29 | Frank Edward Swain | Improvements in butterfly valves |
| CN2366621Y (en) * | 1999-02-12 | 2000-03-01 | 章祖翼 | Shortened neck and broadened cavity type single side wall spherical surface and double sealing butterfly valve |
| CN2890526Y (en) * | 2006-01-13 | 2007-04-18 | 章祖翼 | Limit telescopic butterfly valve |
| CN201111575Y (en) * | 2007-08-29 | 2008-09-10 | 张启权 | Bidirectional pressure metallic hard sealing butterfly valve |
| CN203463683U (en) * | 2013-09-30 | 2014-03-05 | 浙江威肯特泵业有限公司 | Multi-tooth-surface soft sealing butterfly valve |
| CN105864439A (en) * | 2016-06-03 | 2016-08-17 | 江南阀门有限公司 | Regulating type metal sealed butterfly valve |
| CN208185484U (en) * | 2018-05-10 | 2018-12-04 | 江南阀门有限公司 | A kind of low flow resistance butterfly valve of split type shock resistance |
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