CN104197028B - Adjustable all-metal bidirectional hard seal type eccentric butterfly valve - Google Patents
Adjustable all-metal bidirectional hard seal type eccentric butterfly valve Download PDFInfo
- Publication number
- CN104197028B CN104197028B CN201410440924.3A CN201410440924A CN104197028B CN 104197028 B CN104197028 B CN 104197028B CN 201410440924 A CN201410440924 A CN 201410440924A CN 104197028 B CN104197028 B CN 104197028B
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- butterfly plate
- valve
- butterfly
- plate frame
- valve body
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Classifications
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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
- F16K1/16—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
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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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The invention provides an adjustable all-metal bidirectional hard seal type eccentric butterfly valve. The adjustable all-metal bidirectional hard seal type eccentric butterfly valve solves the problem that according to an existing butterfly valve, the bidirectional seal effect is poor, a butterfly plate cannot be matched with all valve bodies, and the sealing surface of the butterfly plate is not resistant to flushing. The adjustable all-metal bidirectional hard seal type eccentric butterfly valve comprises a valve body, a valve rod and a butterfly plate. A medium channel where a medium flows is arranged in the valve body. The adjustable all-metal bidirectional hard seal type eccentric butterfly valve further comprises a butterfly plate frame. The valve rod is arranged on the butterfly plate frame in a sleeved mode and is in linkage connection with the butterfly plate frame. The butterfly plate is fixed to the butterfly plate frame. An eccentric angle a is formed between the axis of a sealing cone of the butterfly plate and the center line of the medium channel of the valve body. An adjusting device used for adjusting the distance between the sealing cone of the butterfly plate and the valve rod is arranged on the butterfly plate frame. According to the adjustable all-metal bidirectional hard seal type eccentric butterfly valve, the adjusting device is additionally arranged; the adjustable all-metal bidirectional hard seal type eccentric butterfly valve can achieve bidirectional seal and bear pressure in the forward direction and in the reverse direction, inner leakage is avoided when the product bears pressure in the forward direction or in the reverse direction, and therefore the sealing effect is good; the distance between a valve seal pair and the center line of the valve rod can be adjusted through the adjusting device, and therefore it is guaranteed that the product is sealed reliably.
Description
Technical field
The present invention relates to a kind of butterfly valve is and in particular to a kind of all-metal reversible seals adjustable eccentric butterfly valve firmly.
Background technology
Butterfly valve is flap valve again, is a kind of simple regulating valve of structure, simultaneously can be used for the switch of low pressure pipeline medium
Control.Butterfly valve refers to closure member（Flap or butterfly plate, usually metalwork）For disk, rotate around valve shaft and open to reach and close
A kind of valve closing, acts primarily as cut-out and throttling action on pipeline.Butterfly valve is applied to producer, coal gas, natural gas, liquefied petroleum
Various corrosivity, non-aggressive stream is conveyed in the engineering systems such as gas, town gas, air, chemical industry smelting and generation environment-friendly
On the pipeline of body medium, for adjusting and blocking the flowing of medium.Existing butterfly valve is divided into centre-pivoted butterfly valve and eccentric-butterfly-valve, center line
Butterfly valve is generally soft sealing butterfly valve and the air-valve having leakage；Eccentric-butterfly-valve is divided into single eccentric, double eccentric and three eccentricity, single eccentric and
Double eccentric butterfly valve is typically all to adopt soft seal, reaches sealing effectiveness by the soft encapsulant of interference fit compression, single inclined
The heart and double eccentric sealing are all that in switching process, frictional force is very big by interference fit seal, and sealing surface is easy to grind away, the longevity
Life is short, and sealing surface upper and lower axle end position easily leaks.Technology development occurs in that three-eccentric-butterfly-valve, due to eccentric reasonable setting,
There is no the friction between sealing surface in switching process, the life-span is longer than former butterfly valve, sealing surface adopts resistant to elevated temperatures graphite or stone
Cotton adds metal foil and is composited, so not only high temperature resistant life-span but also long, and the former valve advantages of this butterfly valve obtain
Extensive promote and use, be the main flow structure of present butterfly valve, the butterfly plate assembly of existing three-eccentric-butterfly-valve is close by butterfly plate, butterfly plate
Seal, pressure plate loop composition（Referring to accompanying drawing 1）.But have also discovered following shortcoming and disadvantage in extensive use：First, due to sealing
Face is that taper seat coordinates so that medium can only be along big conical surface direction to little conical surface direction flowing, and sealing effectiveness very well, is more pressed
More tight favourable sealing, but because backflow in pipeline medium or needs to control bi-directional medium flowing cannot reversely seal, this
It is an industry difficult problem of this valve, all effectively solved always.2nd, the valve manufacturability of this structure is poor, butterfly plate and
Valve body does not enable wildcard, due to the valve rod hole on butterfly plate eccentric with valve body on valve rod hole bias be difficult to be worked into consistent, OK
The method adopting in the industry be butterfly plate assembly is processed with valve body sealing surface after be press-fitted together with, boring valve body is joined together on boring machine
Valve rod hole with butterfly plate, this addresses the problem, but but makes butterfly plate and valve body not have versatility, and part is non-exchange, and one
Denier butterfly plate or sealing member damages, valve body sealing surface damages and is just not easily repaired（Processing is eccentric just inconsistent after repairing）, such as
Fruit change one piece of butterfly plate cannot guarantee that the bias of butterfly plate with the eccentric consistent of valve body so that valve changes butterfly plate or butterfly plate online
Sealing member maintenance can not enable, so this structure valve the damage of butterfly plate sealing member once and would have to scrap whole deck valve
Door.3rd, because butterfly plate sealing member is to be formed using steel plate and asbestos or graphite compoiste adhering, butterfly plate open position butterfly plate close
Sealing positive convection cell direction, if high pressure or high velocity fluid media will wash away asbestos or graphite in sealing member, leads
The premature failure of fine and close front cover is so that valve cannot zero leakage completely after using a period of time.
Content of the invention
For solving the three big problems that in background technology, existing butterfly valve exists, the present invention provides a kind of all-metal reversible firmly to seal
Adjustable eccentric butterfly valve.
The technical scheme is that：A kind of all-metal reversible seals adjustable eccentric butterfly valve firmly, including valve body, valve rod and butterfly
Plate, is provided with the medium channel for flow of media in described valve body, described butterfly plate and valve rod, all in valve body, also include butterfly
Grillage, described valve stem sleeve is connected on butterfly plate frame and with butterfly plate frame, and described butterfly plate is fixed on butterfly plate frame, described
Butterfly plate have with valve body phase sealing primary importance and valve rod rotate after butterfly plate around the butterfly plate centre of gyration rotation make medium lead to
The second position of flow of media in road, the butterfly plate sealing cone on butterfly plate is formed with the valve body metallic sealing section phase sealing on valve body
Valve seal pair, butterfly plate sealing cone and valve rod eccentric setting, the centrage of described valve body media passage is inclined with valve rod centrage
The heart is arranged, and is provided with eccentric angle a, described butterfly plate frame sets between butterfly plate sealing cone axial direction and the centrage of valve body media passage
There is the adjusting means adjusting butterfly plate sealing cone axially with valve rod distance.
As a modification of the present invention, described adjusting means is adjusting screw, and described adjusting screw passes through butterfly plate
Frame is offseted with butterfly plate.
As a further improvement on the present invention, described adjusting screw has many pieces, and described many pieces of adjusting screws circumference is uniform
On butterfly plate frame.
As a further improvement on the present invention, described described butterfly plate frame is mutually solid by many pieces of fixing screws with butterfly plate
Connect.
As a further improvement on the present invention, the distance at described fixing screws to butterfly plate frame center arrives more than adjusting means
The distance at butterfly plate frame center.
As a further improvement on the present invention, described butterfly plate is overall bias truncated cone, the side table of the eccentric frustum of a cone
Built-up welding is passed through in face or surfacing high-abrasive material forms butterfly plate sealing cone, described butterfly plate sealing cone and valve body metallic sealing section shape
Become described valve seal pair.
As a further improvement on the present invention, described butterfly plate frame is provided with through hole, and described butterfly plate is provided with boss, institute
The boss stated is in the through hole of butterfly plate frame and the outer wall of boss and through-hole wall location fit.
The invention has the beneficial effects as follows, it is provided with bias between butterfly plate sealing cone axis and the centrage of valve body media passage
Angle, also add adjusting means, and such structure makes butterfly plate rigidly good, and deflection is little, can make three eccentric metal hard sealed butterfly
Two way seal realized by valve, can positive and negative bidirectional bearing, there is not during reverse pressure-bearing all internal hemorrhage due to trauma just or, sealing effectiveness more preferably, adjusts dress
Putting the eccentric distance c that can adjust butterfly plate sealing surface and valve rod, thus ensureing to make product sealing more reliable, working as sealing surface wear
When, butterfly plate sealing cone can be adjusted relative to the positional distance c of valve rod thus ensureing defeating of valve rod transmission by adjusting means
Tight butterfly plate sealing cone, makes the sealing of product effectively be repaired；It is all that antifriction alloy makes resistance to punching additionally, due to sealing pair
Brush, long service life.
Brief description
Accompanying drawing 1 is the structural representation of existing Butterfly plate valve.
Accompanying drawing 2 is the structural representation of the embodiment of the present invention.
Accompanying drawing 3 is the structural representation of A-A in accompanying drawing 2.
Accompanying drawing 4 is the structural representation of butterfly plate frame 5 and butterfly plate 3 in accompanying drawing 2.
Accompanying drawing 5 is the structural representation of butterfly plate frame 5 in accompanying drawing 4.
Accompanying drawing 6 is the structural representation of butterfly plate 3 in accompanying drawing 4.
Accompanying drawing 7 is the front view of butterfly plate 6 in accompanying drawing 6.
In figure, 1, valve body；11st, valve body metallic sealing section；2nd, valve rod；21st, valve rod centrage；3rd, butterfly plate；31st, valve seal
Secondary；311st, butterfly plate sealing cone；32nd, boss；4th, medium channel；5th, butterfly plate frame；51st, fixing screws；52nd, through hole；6th, adjust dress
Put；61st, adjusting screw.
Specific embodiment
Embodiments of the present invention is further illustrated below in conjunction with the accompanying drawings：
By Fig. 2 combine Fig. 3,4,5,6,7 shown in, a kind of all-metal reversible seals adjustable eccentric butterfly valve firmly, including valve body 1,
Valve rod 2 and butterfly plate 3, are provided with the medium channel 4 for flow of media in described valve body 1, described butterfly plate 3 and valve rod 2 all located at
In valve body 1, also include butterfly plate frame 5, described valve rod 2 is sheathed on butterfly plate frame 5 and is connected with butterfly plate frame 5, described butterfly
Plate 3 is fixed on butterfly plate frame 5, described butterfly plate 3 have after the primary importance mutually being sealed with valve body 1 and valve rod 2 are rotated butterfly plate 3 around
The rotation of butterfly plate 3 centre of gyration makes the second position of flow of media in medium channel 4, the butterfly plate sealing cone 311 on butterfly plate 3 with
Valve body metallic sealing section 11 on valve body 1 mutually seals the valve seal pair 31 of formation, and butterfly plate sealing cone 311 is eccentric with valve rod 2
Setting, the centrage of described valve body 1 medium channel 4 and valve rod centrage 21 eccentric setting, butterfly plate sealing cone 311 axial direction and valve
It is provided with eccentric angle a between the centrage of body 1 medium channel 4.Specifically, the three eccentricity of butterfly valve refers to:Butterfly plate sealing cone 311
There is eccentric throw c and valve rod 5 between；There is eccentric distance e in the centrage of valve body 1 medium channel 4 and valve rod centrage 21；Butterfly plate is close
It is provided with eccentric angle a, that is, angle is eccentric between the envelope conical surface 311 axial direction and the centrage of valve body 1 medium channel 4（Refer to the attached drawing 3）, described
Butterfly plate frame 5 be provided with the adjusting means 6 adjusting butterfly plate sealing cone 311 and valve rod 2 distance.Specifically, adjusting means is used
In the size adjusting eccentric throw c, thus ensureing that valve rod provides enough thrust to make butterfly plate sealing cone wedging in the sealing of valve body
In the big conical surface so as to butterfly plate when by medium thrust forward or backwards all without making butterfly plate sealing cone disengaging valve body be sealed
The big conical surface and compress it is ensured that product can positive sealing under forward and reverse pressure.Specifically, described adjusting means 6 is to adjust
Section screw 61, described adjusting screw 61 offseted through butterfly plate frame 5 with butterfly plate 3, promotion butterfly plate make itself and butterfly plate frame between
Gap increases or reduces, thus changing the size of eccentric c.In particular, described adjusting screw 61 has many pieces, described many pieces of tune
Section screw 61 circumference is distributed on butterfly plate frame 5.The invention has the beneficial effects as follows, valve seal countershaft to valve body media passage
It is provided with eccentric angle between centrage, also add adjusting means, such structure makes butterfly plate rigidly good, and deflection is little, can make
Three eccentric metal hard sealed butterfly damper realizes two way seal, can positive and negative bidirectional bearing, just or all there is not internal hemorrhage due to trauma during reverse pressure-bearing,
More preferably, adjusting means can be with the eccentric distance of control valve sealing pair and valve rod, thus ensureing so that product is sealed for sealing effectiveness
More reliable, when sealing surface wear, can be with the position of control valve sealing pair thus ensureing the sealing of product by adjusting means
Performance.In particular, increased adjusting means in the present invention, it is adjustable that such structure makes eccentric c distance, so
Can avoid, when medium reverse flow, promoting butterfly plate to move to inverted cone direction, valve rod occurs micro bending, valve seal occurs
Leakage problem.This product, in delivery test, carries out forward and reverse pressure testing to valve, and during positive pressure testing, medium promotes cone seal
Face wedging, favourable sealing, but during reverse pressure testing, medium is the wedge bevel sealing surface pushing butterfly plate open, leakage in valve rod micro-deformation,
At this moment the distance of eccentric c can be adjusted by adjusting means, butterfly plate is pushed to valve body sealing surface and is close to seal, compensate and be reversely situated between
The gap that matter pressure causes, makes reversely to fully seal, and reaches forward and reverse fully sealing；Due to eccentric c adjustable so that butterfly plate and valve
The compatibility of body is good, as long as ensureing that valve body is consistent with the taper of butterfly plate to achieve that sealing, the sealing surface patch of two identical tapers
Close and just can fully seal, the error of eccentric c can be realized so as to sealing surface is tightly fitted by adjusting adjusting means.Specifically
Say, such as change the butterfly plate of any same specification and can realize up sealing；If butterfly plate or valve body sealing surface are due to wearing and tearing or damaging,
After being reinstalled butterfly plate frame after re-grinding sealing surface, the distance adjusting the space change bias c between butterfly plate and butterfly plate frame is mended
Repaying the gap after grinding also can make it fully seal；By adjusting the distance of the space change bias c between butterfly plate and butterfly plate frame
Can be completely achieved the wildcard of valve body and butterfly plate, replaceable, the recoverability after bad seals of parts, the processing essence to product
Degree requires little.
Described described butterfly plate frame 5 and butterfly plate 3 are by many pieces of fixing screws 51 Joints.Specifically, adjusting screw
After eccentric c is adjusted to the forward and reverse positive sealing of guarantee product, fixing screws 51 butterfly plate are tightened on butterfly plate frame again,
Prevent butterfly plate own rotation or come off from butterfly plate frame, make butterfly plate and butterfly plate frame keep being rigidly connected, described fixing screws 51
Distance to butterfly plate frame 5 center is more than the distance that adjusting means 6 arrives butterfly plate frame 5 center.Such structure can make butterfly plate frame with
The rigidity that butterfly plate connects more preferably, preferably transmits power and the moment between butterfly plate and valve rod.Fixing screws, adjusting screw be not using
Rust steel is it is ensured that product can reliably be realized adjusting.
It is to be rigidly connected by 4 taper bolts are friction tight between described butterfly plate frame 5 and valve rod 2（See Fig. 2）, so have
Beneficial to valve rod, power or moment are delivered on butterfly plate frame, and then are delivered on butterfly plate sealing surface, flexible by the rotation of valve rod
To control the switch motion of valve plate.
Described butterfly plate 3 is overall bias truncated cone, and the side surface of the eccentric frustum of a cone passes through built-up welding or the wear-resisting material of surfacing
Material forms butterfly plate sealing cone 311, described butterfly plate sealing cone 311 and valve body metallic sealing section 11 formed described in valve close
Envelope secondary 31.Specifically, sealing surface can be used as with build-up wear-resistant, corrosion-resistant, exotic material or hard alloy, due to butterfly plate
Sealing cone 311 be built-up welding or surfacing high rigidity wear-resisting, corrosion resistant alloy so that sealing surface resistance to erosion in media as well,
Nor fragile, increased the service life of product, due to this valve sealing surface damage after also have good prosthetic so that
The cost performance of valve is high, has extensive market prospect.
Described butterfly plate frame 5 is provided with through hole 52, and described butterfly plate 3 is provided with boss 32, and described boss 32 is located at butterfly
In the through hole 52 of grillage 5 and the outer wall of boss 32 and through hole 52 inwall phase location fit.The effect of the boss on butterfly plate is butterfly plate
With the installation positioning action of butterfly plate frame, adjust the playing the guiding role during gap between butterfly plate and butterfly plate frame, butterfly plate boss is also
Reinforcement to butterfly plate intensity, such structure is so that butterfly plate is solid and reliable, indeformable.
Every technical staff's notice：Although the present invention describes according to above-mentioned specific embodiment, the present invention
Invention thought be not limited to that invention, the repacking of any utilization inventive concept, all will include this patent protection of the patent right
In the range of.
Claims (3)
1. a kind of all-metal reversible seals adjustable eccentric butterfly valve firmly, including valve body（1）, valve rod（2）And butterfly plate（3）, described valve
Body（1）Inside it is provided with the medium channel for flow of media（4）, described butterfly plate（3）And valve rod（2）All located at valve body（1）Interior, its
It is characterised by:Also include butterfly plate frame（5）, described valve rod（2）It is sheathed on butterfly plate frame（5）Upper and with butterfly plate frame（5）It is connected,
Described butterfly plate（3）It is fixed on butterfly plate frame（5）On, described butterfly plate（3）Have and valve body（1）The primary importance mutually sealing and valve
Bar（2）Butterfly plate after rotation（3）Around butterfly plate（3）Centre of gyration rotation makes medium channel（4）The second position of interior flow of media, butterfly
Plate（3）On butterfly plate sealing cone（311）With valve body（1）On valve body metallic sealing section（11）Mutually sealing forms valve seal pair
（31）, butterfly plate sealing cone（311）With valve rod（2）Eccentric setting, described valve body（1）Medium channel（4）Centrage and valve rod
Centrage（21）Eccentric setting, butterfly plate sealing cone (311) axial direction and valve body（1）Medium channel（4）Centrage between be provided with
Eccentric angle a, described butterfly plate frame（5）It is provided with regulation butterfly plate sealing cone（311）With valve rod（2）The adjusting means of distance（6）,
Described adjusting means（6）For adjusting screw（61）, described adjusting screw（61）Through butterfly plate frame（5）With butterfly plate（3）Offset,
Described adjusting screw（61）There are many pieces, described many pieces of adjusting screws（61）Circumference is distributed in butterfly plate frame（5）On, described butterfly plate
Frame（5）And butterfly plate（3）By many pieces of fixing screws（51）Joint, described fixing screws（51）To butterfly plate frame（5）Center
Distance is more than adjusting means（6）To butterfly plate frame（5）The distance at center.
2. all-metal reversible according to claim 1 seals adjustable eccentric butterfly valve firmly it is characterised in that described butterfly plate（3）
For overall bias truncated cone, the side surface of the eccentric frustum of a cone passes through built-up welding or surfacing high-abrasive material forms butterfly plate sealing cone
（311）, described butterfly plate sealing cone（311）With valve body metallic sealing section（11）Form described valve seal pair (31).
3. all-metal reversible according to claim 1 seals adjustable eccentric butterfly valve firmly it is characterised in that described butterfly plate frame
（5）It is provided with through hole（52）, described butterfly plate（3）It is provided with boss（32）, described boss（32）Located at butterfly plate frame（5）Logical
Hole（52）Interior and boss（32）Outer wall and through hole（52）Inwall location fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410440924.3A CN104197028B (en) | 2014-09-02 | 2014-09-02 | Adjustable all-metal bidirectional hard seal type eccentric butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410440924.3A CN104197028B (en) | 2014-09-02 | 2014-09-02 | Adjustable all-metal bidirectional hard seal type eccentric butterfly valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104197028A CN104197028A (en) | 2014-12-10 |
| CN104197028B true CN104197028B (en) | 2017-02-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410440924.3A Active CN104197028B (en) | 2014-09-02 | 2014-09-02 | Adjustable all-metal bidirectional hard seal type eccentric butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104197028B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439064A (en) * | 2016-12-07 | 2017-02-22 | 无锡优耐特净化装备有限公司 | Three-eccentric manual butterfly valve for turbine |
| WO2020175673A1 (en) * | 2019-02-28 | 2020-09-03 | 株式会社キッツ | Valve body of double eccentric butterfly valve, and double eccentric butterfly valve |
| CN111927966A (en) * | 2020-08-28 | 2020-11-13 | 浙江金盾风机股份有限公司 | Three-eccentric sealing butterfly valve |
| CN113976927A (en) * | 2021-10-27 | 2022-01-28 | 三门核电有限公司 | Repair method for triple eccentric butterfly valve |
| CN115654156A (en) * | 2022-11-14 | 2023-01-31 | 大连船用阀门有限公司 | Bidirectional-sealing low-torque triple-eccentric ventilation butterfly valve |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1203029A (en) * | 1966-11-08 | 1970-08-26 | Saunders Valve Co Ltd | Butterfly valves for the control of fluids |
| CN2095309U (en) * | 1991-01-09 | 1992-02-05 | 黄作兴 | Adjustable butterfly valve |
| CN2331797Y (en) * | 1997-09-17 | 1999-08-04 | 李尧善 | Stop butterfly valve |
| CN1544835A (en) * | 2003-11-22 | 2004-11-10 | 宣达实业集团有限公司 | Soft sealing butterfly valve |
| CN2916288Y (en) * | 2006-05-26 | 2007-06-27 | 辽宁良工阀门厂 | 3D eccentric two-way metallic hard sealing butterfly valve |
| CN201909041U (en) * | 2011-01-10 | 2011-07-27 | 山东坚龙特种不锈钢股份有限公司 | Novel butterfly valve |
| PT2751454T (en) * | 2011-11-01 | 2017-06-05 | Ab Somas Ventiler | A butterfly valve |
| CN203146844U (en) * | 2013-03-07 | 2013-08-21 | 浙江牧雅阀门制造有限公司 | Ceramic butterfly valve |
| CN204061936U (en) * | 2014-09-02 | 2014-12-31 | 宣达实业集团有限公司 | All-metal reversible seals adjustable eccentric butterfly valve firmly |
-
2014
- 2014-09-02 CN CN201410440924.3A patent/CN104197028B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104197028A (en) | 2014-12-10 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Adjustable all-metal bidirectional hard seal type eccentric butterfly valve Effective date of registration: 20171215 Granted publication date: 20170215 Pledgee: Zhejiang bank Wenzhou Limited by Share Ltd Yongjia branch Pledgor: Xuanda Industrial Group Co., Ltd. Registration number: 2017330000292 |
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