CN104006173B - Bidirectional sealed butterfly valve - Google Patents
Bidirectional sealed butterfly valve Download PDFInfo
- Publication number
- CN104006173B CN104006173B CN201410052418.7A CN201410052418A CN104006173B CN 104006173 B CN104006173 B CN 104006173B CN 201410052418 A CN201410052418 A CN 201410052418A CN 104006173 B CN104006173 B CN 104006173B
- Authority
- CN
- China
- Prior art keywords
- valve
- plate
- corrugated tube
- butterfly
- valve body
- 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.)
- Expired - Fee Related
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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
- F16K1/226—Shaping or arrangements of the sealing
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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
- F16K1/222—Shaping of the valve member
-
- 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
Abstract
The invention discloses a kind of bidirectional sealed butterfly valve, aim to provide a kind of bidirectional sealed butterfly valve, can in the alternate load situation carrying out repercussion that corrugated tube bears medium, ensure sealing effectiveness and service life, its drip irrigation device is to include valve body, valve seat, valve rod, operating mechanism and butterfly plate, valve body includes channel wall, it is connected to corrugated tube between end face and the end face of annular boss of valve seat to be connected, the inwall of corrugated tube communicates with valve channel, corrugated tube includes some surface plates and some arcs, each arc is equipped with the annular air-pocket being coaxially disposed with corrugated tube, each annular air-pocket turns on through adjacent surface plate, valve body is provided with valve, valve connects annular air-pocket through valve body conducting；The channel wall of valve rod both sides respectively first passage and second channel, valve body is provided with and is respectively used to the pressure measuring instruments that in detection first passage and second channel, pressure medium fluctuates, and the present invention is applicable to bidirectional sealed butterfly valve.
Description
Technical field
The present invention relates to a kind of technical field of valve manufacturing, more specifically, it relates to a kind of bidirectional sealed butterfly valve.
Background technology
Traditional butterfly valve, its valve seat is substantially as fixed, and in use, when medium is reverse flow and this pressure medium is bigger, pressure can push away and make butterfly plate have a displacement, thus and forming gap between valve seat and cause leakage；Some butterfly valves adopt the means increasing valve rod twisting resistance to solve this problem, thus strengthen butterfly plate when closed its with outbreak tight power, come successively to stop medium that the impact of butterfly plate is made butterfly plate displacement as much as possible, thus to guarantee the sealing property of valve,, this means existing defects, can make valve require great effort very much when opening and closing, thus affecting the convenience of valve operation.
Therefore, application number be 200910096151.0 Chinese patent disclose a kind of butterfly valve featuring two-way metallic seal of bellows, it includes valve body, valve seat, butterfly plate, the valve rod being connected with butterfly plate and the operating mechanism rotated with ovable valve stem, the axial seal work surface of described butterfly plate is cone inclined-plane, the work surface of described valve seat is inclined-plane, form gap between outer circumferential side and the vias inner walls of valve body of described valve seat and constitute floated structure, the vias inner walls of valve body is also provided with annular boss, it is connected by corrugated tube between end face and the end face of annular boss of described valve seat, gap between the outer layer of this corrugated tube and the valve channel inwall of valve seat communicates, the inwall of this corrugated tube communicates with valve channel, on the inwall of described valve body and be positioned at the opposite side relative to corrugated tube of valve seat and be additionally provided with a location-plate, this location-plate is separated by a distance with valve seat.
Although this butterfly valve featuring two-way metallic seal of bellows operate light, seal reliable, but, due to corrugated tube, to there is service life limited, but also it is relevant with the fatigue properties of selected material, particularly when described butterfly valve is used in when medium constantly carrys out repercussion, making corrugated plate bear alternate load always, thus greatly reducing the service life of corrugated tube, finally affecting sealing effectiveness and the service life of butterfly valve.
Summary of the invention
For the deficiency that prior art exists, it is an object of the invention to provide a kind of bidirectional sealed butterfly valve, it is possible in the alternate load situation carrying out repercussion that corrugated tube bears medium, it is ensured that sealing effectiveness and service life.
For achieving the above object, the technical scheme is that a kind of bidirectional sealed butterfly valve, including valve body, valve seat, valve rod, operating mechanism and butterfly plate, described valve body includes channel wall, described butterfly plate and valve rod are connected, operating mechanism drives described valve rod to rotate, the circumferential seal work surface of described butterfly plate is cone inclined-plane, the work surface of valve seat is the lozenges that the axial seal work surface with butterfly plate offsets, the channel wall of described valve body is additionally provided with annular boss, it is provided with gap between outer circumferential side and the channel wall of valve body of described valve seat, it is connected to corrugated tube between end face and the end face of annular boss of described valve seat, the inwall of described corrugated tube communicates with valve channel,
Described corrugated tube includes some surface plates and some arcs, the side of described each surface plate is equipped with the annular air-pocket being coaxially disposed with corrugated tube, described each adjacent annular air-pocket is through surface plate conducting, and described valve body is provided with valve, and described valve connects annular air-pocket through valve body conducting；
The channel wall respectively first passage of described valve rod both sides and second channel, described valve body is provided with and is respectively used to the pressure measuring instruments that in detection first passage and second channel, pressure medium fluctuates.
By adopting technique scheme, it is equipped with the annular air-pocket being coaxially disposed with corrugated tube in the side of described each surface plate, coordinate two simultaneously and be respectively used to the pressure measuring instruments that in detection first passage and second channel, pressure medium fluctuates, can pass through to monitor described pressure measuring instruments, judge whether the medium in channel wall is fluctuating back and forth, when described corrugated plating is caused alternate load by the medium in channel wall, convenient for the inflator pump being arranged on outside, by valve, annular air-pocket is inflated, annular air-pocket is utilized to fill the space between adjacent two surface plates of described corrugated tube, corrugated tube is made to be in one and half extension states, thus avoid described corrugated tube significantly to stretch always, contractile motion, a large amount of service lifes are reduced in short time.
The present invention is further arranged to: described each equal one_to_one corresponding of adjacent surface plate is fixedly connected with annular air-pocket, and on described corrugated tube, each annular air-pocket is all located at the same side of each surface plate.
By adopting technique scheme, described each equal one_to_one corresponding of adjacent surface plate is fixedly connected with annular air-pocket and is located at the same side of surface plate, it is possible to ensure the structural compactness of described corrugated tube, simultaneously, prevent annular air-pocket from floating because of medium, effect of losing the job.
The present invention is further arranged to: described arc is divided into some slabs and some thin plates, and described each slab and thin plate are all arranged along the axis direction interval of corrugated tube.
By adopting technique scheme; described arc is divided into slab and thin plate the axis direction interval along corrugated tube arrange; owing to thick plate structure intensity is high, bearing load amount is big; and the active force of thin plate stretching needs is little; therefore; described setting can in combination with the advantage of slab Yu thin plate; improve the result of use of described corrugated tube; at pressure medium hour; the extension that can utilize thin plate stretches; utilize slab protection corrugated tube simultaneously, be unlikely to the described corrugated tube when thin plate runs into fatigue and lose result of use.
The present invention is further arranged to: be provided with circular elastic ring between described valve seat and valve body, and described elastic ring is provided with some through holes for medium circulation.
By adopting technique scheme, circular elastic ring it is provided with between described valve seat and valve body, the elasticity of described elastic ring can be utilized to valve seat of conflicting, reduce described valve seat fluctuates back and forth, impact because of medium, related corrugated tube, described corrugated tube is made to bear radial load, thus causing decline the service life of corrugated tube；Additionally, be provided with some through holes for medium circulation on the end face of described elastic ring, it is ensured that the normal use of described butterfly valve dual sealing mechanism.
The present invention is further arranged to: be embedded with sealing ring on the outer circumference surface of described butterfly plate, and described sealing ring includes some 304 corrosion resistant plates and some flexible graphite plates, and described each flexible graphite plate and each 304 corrosion resistant plates are staggered and constitute soft and hard seal inserts；Described sealing ring is tight against the inner peripheral surface of valve seat, the angle that the angle that the outer circumference surface of described sealing ring and butterfly plate axis line are formed is formed with own axes less than the outer circumference surface of butterfly plate.
By adopting technique scheme, the outer circumference surface of described butterfly plate is embedded the soft and hard seal inserts being made up of 304 corrosion resistant plates and flexible graphite plate, 304 stainless steel materials and the respective characteristic of soft graphite can be had concurrently, improve the sealing between described butterfly plate and valve seat；And, the angle that the angle that the outer circumference surface of described sealing ring and butterfly plate axis line are formed is formed with own axes less than the outer circumference surface of butterfly plate, can wear and tear at the work surface of described sealing ring, in slope is gradually reduced, ensure the sealing between valve seat, in addition, owing to two work surface angles of inclination of valve seat and sealing ring are different, the relation of line contact sealing, the keying that can make described butterfly plate when not reducing sealing effectiveness is more laborsaving.
The present invention is further arranged to: described channel wall is provided with location-plate, and described location-plate is positioned at the valve seat opposite side relative to corrugated tube；Described location-plate be coated with soft graphite.
By adopting technique scheme, location-plate is set it can be avoided that described corrugated tube excessive tensile is thus causing valve seat over-travel, thus ensure valve event meanwhile, it is capable to prevent corrugated tube overextension from fatigue occurring, be further ensured that the service life of described corrugated tube；Additionally, include soft graphite on the surface of described location-plate, protection objective plate is not by the erosion of Korrosionsmedium, and improves the resistance to pressure of location-plate.
The present invention is further arranged to: the outer circumference surface of described butterfly plate is arcwall face.
By adopting technique scheme, the outer circumference surface of described butterfly plate is arranged to arcwall face, it is possible to utilize the structure of arc, has both ensured the sealing effectiveness of butterfly valve, the keying of butterfly plate can be further facilitated again, reduce the friction that butterfly plate causes in opening-closing process.
Accompanying drawing explanation
Fig. 1 is the structural representation of bidirectional sealed butterfly valve embodiment of the present invention；
Fig. 2 is the A place enlarged drawing in Fig. 1.
Accompanying drawing labelling: 1, valve body；11, channel wall；12, location-plate；2, valve seat；3, valve rod；4, operating mechanism；5, butterfly plate；51, sealing ring；6, annular boss；7, corrugated tube；71, surface plate；72, arc；721, thin plate；722, slab；8, annular air-pocket；81, valve；9, pressure measuring instruments；10, elastic ring；101, through hole.
Detailed description of the invention
Referring to figs. 1 through Fig. 2, bidirectional sealed butterfly valve embodiment of the present invention is described further.
As shown in Figure 1 to Figure 2, a kind of bidirectional sealed butterfly valve, including valve body 1, valve seat 2, valve rod 3, operating mechanism 4 and butterfly plate 5, described valve body 1 includes channel wall 11, described butterfly plate 5 is connected with valve rod 3, operating mechanism 4 drives described valve rod 3 to rotate, the circumferential seal work surface of described butterfly plate 5 is cone inclined-plane, the work surface of valve seat 2 is the lozenges that the axial seal work surface with butterfly plate 5 offsets, the channel wall 11 of described valve body 1 is additionally provided with annular boss 6, it is provided with gap between outer circumferential side and the channel wall 11 of valve body 1 of described valve seat 2, it is connected to corrugated tube 7 between end face and the end face of annular boss 6 of described valve seat 2 to be connected, the inwall of described corrugated tube 7 communicates with valve body 1 passage,
Described corrugated tube 7 includes some surface plates 71 and some arcs 72, the side of described each surface plate 71 is equipped with the annular air-pocket 8 being coaxially disposed with corrugated tube 7, described each adjacent annular air-pocket 8 turns on through surface plate 71, described valve body 1 is provided with valve 81, and described valve 81 connects annular air-pocket 8 through valve body 1 conducting；
The channel wall 11 respectively first passage of described valve rod 3 both sides and second channel, described valve body 1 is provided with and is respectively used to the pressure measuring instruments 9 that in detection first passage and second channel, pressure medium fluctuates.
It is equipped with the annular air-pocket 8 being coaxially disposed with corrugated tube 7 in the side of described each surface plate 71, coordinate two simultaneously and be respectively used to the pressure measuring instruments 9 that in detection first passage and second channel, pressure medium fluctuates, can pass through to monitor described pressure measuring instruments 9, judge whether the medium in channel wall 11 is fluctuating back and forth, when described corrugated plating is caused alternate load by the medium in channel wall 11, convenient for the inflator pump being arranged on outside, by valve 81, annular air-pocket 8 is inflated, annular air-pocket 8 is utilized to fill the space between adjacent two surface plates 71 of described corrugated tube 7, corrugated tube 7 is made to be in one and half extension states, thus avoid described corrugated tube 7 significantly to stretch always, contractile motion, reduce a large amount of service lifes in short time (to it should be noted that herein, annular air-pocket 8 is set, can also prevent the impurity in medium from piling up in the depressed area of described corrugated tube 7；In addition, single-chip microcomputer can also be set, utilizing in program and the automatic sense channel wall 11 of detecting device pressure medium fluctuation situation, automatic inflating and the pressure condition according to medium to regulate aeration quantity, so external equipment such as inflator pump is repeated no more by the present embodiment).
Described each adjacent equal one_to_one corresponding of surface plate 71 is fixedly connected with annular air-pocket 8, and on described corrugated tube 7, each annular air-pocket 8 is all located at the same side of each surface plate 71.
Described each adjacent equal one_to_one corresponding of surface plate 71 is fixedly connected with annular air-pocket 8 and is located at the same side of surface plate 71, it is possible to ensure the structural compactness of described corrugated tube 7, simultaneously, it is prevented that annular air-pocket 8 floats because of medium, effect of losing the job.
Described arc 72 is divided into some slabs 722 and some thin plates 721, and described each slab 722 and thin plate 721 are all arranged along the axis direction interval of corrugated tube 7.
Described arc 72 is divided into slab 722 and thin plate 721 the axis direction interval along corrugated tube 7 arrange; owing to slab 722 structural strength is high, bearing load amount is big; and the active force of thin plate 721 stretching needs is little; therefore; described setting can in combination with the advantage of slab 722 with thin plate 721; improve the result of use of described corrugated tube 7; at pressure medium hour; the extension that can utilize thin plate 721 stretches; utilize slab 722 to protect corrugated tube 7 simultaneously, be unlikely to the described corrugated tube 7 when thin plate 721 runs into fatigue and lose result of use.
Being provided with circular elastic ring 10 between described valve seat 2 and valve body 1, described elastic ring 10 is provided with some through holes 101 for medium circulation.
Circular elastic ring 10 it is provided with between described valve seat 2 and valve body 1, the elasticity of described elastic ring 10 can be utilized to valve seat 2 of conflicting, reduce described valve seat 2 fluctuates back and forth, impact because of medium, related corrugated tube 7, described corrugated tube 7 is made to bear radial load, thus causing decline the service life of corrugated tube 7；Additionally, be provided with some through holes 101 for medium circulation on the end face of described elastic ring 10, it is ensured that the normal use of described butterfly valve dual sealing mechanism.
Being embedded with sealing ring 51 on the outer circumference surface of described butterfly plate 5, described sealing ring 51 includes some 304 corrosion resistant plates and some flexible graphite plates, and described each flexible graphite plate and each 304 corrosion resistant plates are staggered and constitute soft and hard seal inserts；Described sealing ring 51 is tight against the inner peripheral surface of valve seat 2, the angle that the angle that the outer circumference surface of described sealing ring 51 and butterfly plate 5 axis are formed is formed with own axes less than the outer circumference surface of butterfly plate 5.
The outer circumference surface of described butterfly plate 5 is embedded the soft and hard seal inserts being made up of 304 corrosion resistant plates and flexible graphite plate, it is possible to have 304 stainless steel materials and the respective characteristic of soft graphite concurrently, improve the sealing between described butterfly plate 5 and valve seat 2；And, the angle that the angle that the outer circumference surface of described sealing ring 51 and butterfly plate 5 axis are formed is formed with own axes less than the outer circumference surface of butterfly plate 5, can wear and tear at the work surface of described sealing ring 51, in slope is gradually reduced, ensure the sealing between valve seat 2, in addition, owing to 51 two work surface angles of inclination of valve seat 2 and sealing ring are different, the relation of line contact sealing, the keying that can make described butterfly plate 5 when not reducing sealing effectiveness is more laborsaving.
Described channel wall 11 is provided with location-plate 12, and described location-plate 12 is positioned at the valve seat 2 opposite side relative to corrugated tube 7；Described location-plate 12 be coated with soft graphite.
Location-plate 12 is set it can be avoided that described corrugated tube 7 excessive tensile is thus causing valve seat 2 over-travel, thus ensure valve event meanwhile, it is capable to prevent corrugated tube 7 overextension from fatigue occurring, be further ensured that the service life of described corrugated tube 7；Additionally, include soft graphite on the surface of described location-plate 12, protection objective plate 12 is not by the erosion of Korrosionsmedium, and improves the resistance to pressure of location-plate 12.
The outer circumference surface of described butterfly plate 5 is arcwall face.
The outer circumference surface of described butterfly plate 5 is arranged to arcwall face, it is possible to utilize the structure of arc, has both ensured the sealing effectiveness of butterfly valve, the keying of butterfly plate 5 can be further facilitated again, reduce the friction that butterfly plate 5 causes in opening-closing process.
The above makes the preferred embodiment of the present invention, for the person of ordinary skill of the art without departing from the principles of the invention, it is also possible to make some modification and improvement, and these also should be regarded as protection scope of the present invention.
Claims (7)
1. a bidirectional sealed butterfly valve, including valve body, valve seat, valve rod, operating mechanism and butterfly plate, described valve body includes channel wall, described butterfly plate and valve rod are connected, operating mechanism drives described valve rod to rotate, the circumferential seal work surface of described butterfly plate is cone inclined-plane, the work surface of valve seat is the lozenges that the axial seal work surface with butterfly plate offsets, the channel wall of described valve body is additionally provided with annular boss, it is provided with gap between outer circumferential side and the channel wall of valve body of described valve seat, it is connected to corrugated tube between end face and the end face of annular boss of described valve seat, the inwall of described corrugated tube communicates with valve channel, it is characterized in that:
Described corrugated tube includes some surface plates and some arcs, the side of described each surface plate is equipped with the annular air-pocket being coaxially disposed with corrugated tube, described each adjacent annular air-pocket is through surface plate conducting, and described valve body is provided with valve, and described valve connects annular air-pocket through valve body conducting；
The channel wall respectively first passage of described valve rod both sides and second channel, described valve body is provided with and is respectively used to the pressure measuring instruments that in detection first passage and second channel, pressure medium fluctuates.
2. bidirectional sealed butterfly valve according to claim 1, is characterized in that: described each equal one_to_one corresponding of adjacent surface plate is fixedly connected with annular air-pocket, and on described corrugated tube, each annular air-pocket is all located at the same side of each surface plate.
3. bidirectional sealed butterfly valve according to claim 1 and 2, is characterized in that: described arc is divided into some slabs and some thin plates, and described each slab and thin plate are all arranged along the axis direction interval of corrugated tube.
4. bidirectional sealed butterfly valve according to claim 3, is characterized in that: be provided with circular elastic ring between described valve seat and valve body, and described elastic ring is provided with some through holes for medium circulation.
5. bidirectional sealed butterfly valve according to claim 4, it is characterized in that: the outer circumference surface of described butterfly plate is embedded with sealing ring, described sealing ring includes some 304 corrosion resistant plates and some flexible graphite plates, and described each flexible graphite plate and each 304 corrosion resistant plates are staggered and constitute soft and hard seal inserts；Described sealing ring is tight against the inner peripheral surface of valve seat, the angle that the angle that the outer circumference surface of described sealing ring and butterfly plate axis line are formed is formed with own axes less than the outer circumference surface of butterfly plate.
6. bidirectional sealed butterfly valve according to claim 5, is characterized in that: described channel wall is provided with location-plate, and described location-plate is positioned at the valve seat opposite side relative to corrugated tube；Described location-plate be coated with soft graphite.
7. bidirectional sealed butterfly valve according to claim 4, is characterized in that: the outer circumference surface of described butterfly plate is arcwall face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410052418.7A CN104006173B (en) | 2014-02-17 | 2014-02-17 | Bidirectional sealed butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410052418.7A CN104006173B (en) | 2014-02-17 | 2014-02-17 | Bidirectional sealed butterfly valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104006173A CN104006173A (en) | 2014-08-27 |
| CN104006173B true CN104006173B (en) | 2016-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410052418.7A Expired - Fee Related CN104006173B (en) | 2014-02-17 | 2014-02-17 | Bidirectional sealed butterfly valve |
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| Country | Link |
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| CN (1) | CN104006173B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508634B (en) * | 2016-01-18 | 2017-11-24 | 株洲南方阀门股份有限公司 | A kind of bidirectional metal hard-sealing butterfly valve |
| CN106439054A (en) * | 2016-09-19 | 2017-02-22 | 成都测迪森生物科技有限公司 | Combined valve seat |
| CN110566678B (en) * | 2019-08-23 | 2021-02-02 | 江苏盐电阀门有限公司 | Soft sealing butterfly valve with triangular ring structure |
| CN111043331A (en) * | 2019-12-17 | 2020-04-21 | 孔仕华 | Prevent integration valve of leakage |
| CN112921235A (en) * | 2020-12-25 | 2021-06-08 | 张家港市鸿源机械锻造有限公司 | Low-temperature-resistant corrosion-resistant high-strength valve for deep sea and manufacturing method thereof |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3544609A1 (en) * | 1985-12-17 | 1987-06-19 | Waeschle Maschf Gmbh | CALOTTER SLIDER |
| JP2001248738A (en) * | 2000-03-06 | 2001-09-14 | Kubota Corp | Seat structure of eccentric butterfly valve |
| CN2611721Y (en) * | 2003-04-18 | 2004-04-14 | 中国华电工程(集团)公司 | Packing sealed bellows expansion joint |
| CN1644967A (en) * | 2005-01-21 | 2005-07-27 | 铁岭阀门(集团)特种阀门有限责任公司 | Valve with double sealing pairs |
| CN201310633Y (en) * | 2008-12-04 | 2009-09-16 | 江苏神通阀门股份有限公司 | Two-way sealing butterfly valve |
| CN101532571B (en) * | 2009-02-13 | 2011-02-02 | 浙江石化阀门有限公司 | Butterfly valve featuring two-way metallic seal of bellows |
| CN203743451U (en) * | 2014-02-17 | 2014-07-30 | 中亚阀门有限公司 | Two-way sealing butterfly valve |
-
2014
- 2014-02-17 CN CN201410052418.7A patent/CN104006173B/en not_active Expired - Fee Related
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| CN104006173A (en) | 2014-08-27 |
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Granted publication date: 20160629 Termination date: 20210217 |