CN104595506A - Butterfly valve seal structure - Google Patents
Butterfly valve seal structure Download PDFInfo
- Publication number
- CN104595506A CN104595506A CN201510067625.4A CN201510067625A CN104595506A CN 104595506 A CN104595506 A CN 104595506A CN 201510067625 A CN201510067625 A CN 201510067625A CN 104595506 A CN104595506 A CN 104595506A
- Authority
- CN
- China
- Prior art keywords
- butterfly valve
- dish plate
- valve body
- valve
- circulation duct
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/226—Shaping or arrangements of the sealing
- F16K1/2263—Shaping or arrangements of the sealing the sealing being arranged on the valve seat
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses a butterfly valve seal structure, which belongs to the field of mechanical design. A butterfly valve comprises a valve body, a valve rod and a dished plate, wherein the valve body is provided with a flow pipeline, the dished plate is connected with the valve rod, the dished plate is arranged in the flow pipeline, and the butterfly valve is characterized in that the cross section of the outer circumference of the dished plate is in an arc shape, a seal part which is matched with the outer circumference of the dished plate is also arranged in the flow pipeline of the valve body, the seal part is made of a metal elastic material, the surface, which is matched with the dished plate, of the seal part is in an arc shape, and the seal part is matched with the outer circumference of the dished plate through the arc surface in a sealing manner. By adopting the technical scheme, the arc surface is used for being matched with the seal structure, so that the backflow of medium can be effectively prevented, and the seal performance of the butterfly valve under the reverse pressure can be effectively improved.
Description
Technical field
The invention belongs to mechanical field, relate to a kind of seal arrangement, particularly relate to a kind of sealing configuration being applicable to butterfly valve.
Background technique
Butterfly valve is Flap valve again, it is the simple modulating valve of a kind of structure, the butterfly valve that can be used for the switch control rule of low pressure pipeline medium refers to that closure member (flap or butterfly plate) is disk, rotate a kind of valve reaching open and close around valve shaft, valve can be used for the flowing controlling all kinds fluids such as air, water, steam, various Korrosionsmedium, mud, oil product, liquid metal and radiating medium.On pipeline, main rising is cut off and throttling action.Butterfly valve open-shut device is a discoidal butterfly plate, rotates in valve body around the axis of himself, thus reaches the object opening and closing or regulate.
Mostly there is following shortcoming in existing butterfly valve:
1, dish plate is thicker, and flow resistance is larger;
2, Chang Kaishi, seal is just washed away medium, on being sealed with impact;
3, when oppositely sealing, sealing effect is poor, easily reveals.
Summary of the invention
In view of this, the invention provides a kind of butterfly valve seal structure.
For achieving the above object, concrete technological scheme is as follows:
A kind of butterfly valve seal structure, described butterfly valve comprises valve body, valve rod and dish plate, described valve body is provided with circulation duct, described dish plate is connected with described valve rod, described dish plate is located in described circulation duct, the cross section of the periphery of described dish plate is curved, the sealed department matched with the periphery of described dish plate is also provided with in the circulation duct of described valve body, described sealed department is made up of metallic resilient material, the fitting surface that described sealed department coordinates with described dish plate is curved, and the periphery of described sealed department and described dish plate is by cambered surface fitted seal.
Preferably, also comprise the trim ring of annular, the side of described valve body circulation duct is located at by described trim ring, and the internal diameter of described trim ring is equal to or greater than the internal diameter of described circulation duct.
Preferably, described sealed department comprises the surface elastic metal sealing ring that cross section takes the shape of the letter U, and described seal ring is located in described circulation duct, and with the periphery fitted seal of described dish plate.
Preferably, one end of described seal ring is connected with the circulation duct of described valve body, and the other end of described seal ring is fixed on the side of described valve body by trim ring.
Preferably, also comprise actuator, described actuator is connected with described valve rod.
Preferably, described actuator be pneumatic, surge or electric actuator.
Relative to prior art, technological scheme of the present invention utilizes cambered surface fitted seal structure, thus effectively prevents the backflow of medium, effectively adds the sealability of dish valve in reverse pressure-bearing situation.
Accompanying drawing explanation
The accompanying drawing forming a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of the embodiment of the present invention;
Fig. 2 is the cross section structure schematic diagram of the embodiment of the present invention;
Fig. 3 is the structure for amplifying schematic diagram of the sealing configuration of the embodiment of the present invention;
Fig. 4 is the dish plate structure schematic diagram of the embodiment of the present invention;
Fig. 5 is the sealed department structural representation of the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technological scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
It should be noted that, when not conflicting, the embodiment in the present invention and the feature in embodiment can combine mutually.
Below with reference to accompanying drawing, concrete explaination is done to embodiments of the invention.
A kind of butterfly valve seal structure of embodiments of the invention as shown in Figures 1 and 2, butterfly valve comprises valve body 1, valve rod 2 and dish plate 3.Valve body 1 is provided with circulation duct, and dish plate 3 is connected with valve rod 2, and dish plate 3 is located in circulation duct.
And combine as shown in Figures 3 and 4, the cross section of the periphery of dish plate 3 is curved, is also provided with the sealed department 4 matched with the periphery of dish plate in the circulation duct of valve body 1.Sealed department 4 is made up of metallic resilient material.The fitting surface that sealed department 4 coordinates with dish plate 3 is curved, and sealed department 4 passes through cambered surface fitted seal with the periphery of dish plate 3.
Embodiments of the invention by cambered surface fitted seal structure, thus effectively prevent the backflow of medium, effectively add the sealability of the butterfly valve of dish valve reverse pressure-bearing situation in prior art.
As shown in Figures 2 and 3, in an embodiment of the present invention, the trim ring 5 of annular is also comprised.And combine as shown in Figure 5, sealed department 4 comprises the surface elastic metal sealing ring that cross section takes the shape of the letter U.One end of seal ring is connected with the circulation duct of valve body 1, and the other end of seal ring is fixed on the side of valve body 1 by trim ring 5, and preferred trim ring 5 is pressed on valve body 1 by hexagon socket head cap screw.
And preferably the internal diameter of trim ring 5 is equal to or greater than the internal diameter of circulation duct, reduces fluid resistance.
As shown in Figure 4, in embodiments of the present invention, the cross section of the periphery of preferred dish plate 3 is curved, and towards lopsidedness, preferably tilts towards sealed department 4, and suitably reduces the thickness of dish plate 3, to reduce flow resistance.
Butterfly valve seal structure of the present invention is applicable to the butterfly valves such as two bias, three eccentrics, is applicable to the control of pipeline stream.The sealing surface of its butterfly plate 3 periphery is designed to spheric structure, and with certain tilted conical.The sealed department of valve body 1 is for becoming U-shaped structure.What make valve body follow butterfly plate 3 is sealed into cambered surface fitted seal structure, its good seal performance, particularly when two way sealed, and it is corrosion-resistant, high temperature resistant, high pressure, long service life, effectively prevents the backflow of medium, effectively adds the sealability of the butterfly valve of dish valve reverse pressure-bearing situation in prior art.
Be described in detail specific embodiments of the invention above, but it is just as example, the present invention is not restricted to specific embodiment described above.To those skilled in the art, any equivalent modifications that the present invention is carried out and substituting also all among category of the present invention.Therefore, equalization conversion done without departing from the spirit and scope of the invention and amendment, all should contain within the scope of the invention.
Claims (6)
1. a butterfly valve seal structure, described butterfly valve comprises valve body, valve rod and dish plate, described valve body is provided with circulation duct, described dish plate is connected with described valve rod, described dish plate is located in described circulation duct, it is characterized in that, the cross section of the periphery of described dish plate is curved, the sealed department matched with the periphery of described dish plate is also provided with in the circulation duct of described valve body, described sealed department is made up of metallic resilient material, the fitting surface that described sealed department coordinates with described dish plate is curved, and the periphery of described sealed department and described dish plate is by cambered surface fitted seal.
2. butterfly valve seal structure as claimed in claim 1, is characterized in that, also comprise the trim ring of annular, the side of described valve body circulation duct is located at by described trim ring, and the internal diameter of described trim ring is equal to or greater than the internal diameter of described circulation duct.
3. butterfly valve seal structure as claimed in claim 2, it is characterized in that, described sealed department comprises the surface elastic metal sealing ring that cross section takes the shape of the letter U, and described seal ring is located in described circulation duct, and with the periphery fitted seal of described dish plate.
4. butterfly valve seal structure as claimed in claim 3, it is characterized in that, one end of described seal ring is connected with the circulation duct of described valve body, and the other end of described seal ring is fixed on the side of described valve body by trim ring.
5. butterfly valve seal structure as claimed in claim 4, it is characterized in that, also comprise actuator, described actuator is connected with described valve rod.
6. butterfly valve seal structure as claimed in claim 5, is characterized in that, described actuator be pneumatic, surge or electric actuator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510067625.4A CN104595506A (en) | 2015-02-09 | 2015-02-09 | Butterfly valve seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510067625.4A CN104595506A (en) | 2015-02-09 | 2015-02-09 | Butterfly valve seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104595506A true CN104595506A (en) | 2015-05-06 |
Family
ID=53121464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510067625.4A Pending CN104595506A (en) | 2015-02-09 | 2015-02-09 | Butterfly valve seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104595506A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1624891A (en) * | 1927-04-12 | Water-tight seating for butterfly valves and such | ||
| CN88212280U (en) * | 1988-03-16 | 1988-09-07 | 长沙市阀门厂 | Butterfly valve with metal sealing body |
| CN2903596Y (en) * | 2006-03-15 | 2007-05-23 | 广东省韶关市阀门厂有限公司 | Elastic metal hard sealing butterfly valve |
| CN201844036U (en) * | 2010-06-13 | 2011-05-25 | 无锡智能自控工程有限公司 | Buttery valve with U-shaped sealing ring |
| CN102537380A (en) * | 2010-12-17 | 2012-07-04 | 杨忠义 | Bidirectional high-performance soft sealing butterfly valve |
| CN203560467U (en) * | 2013-11-18 | 2014-04-23 | 交城县鑫升机械有限公司 | Triple-eccentric metal hard-sealing butterfly valve |
| CN204437304U (en) * | 2015-02-09 | 2015-07-01 | 胡和锁 | A kind of butterfly valve seal structure |
-
2015
- 2015-02-09 CN CN201510067625.4A patent/CN104595506A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1624891A (en) * | 1927-04-12 | Water-tight seating for butterfly valves and such | ||
| CN88212280U (en) * | 1988-03-16 | 1988-09-07 | 长沙市阀门厂 | Butterfly valve with metal sealing body |
| CN2903596Y (en) * | 2006-03-15 | 2007-05-23 | 广东省韶关市阀门厂有限公司 | Elastic metal hard sealing butterfly valve |
| CN201844036U (en) * | 2010-06-13 | 2011-05-25 | 无锡智能自控工程有限公司 | Buttery valve with U-shaped sealing ring |
| CN102537380A (en) * | 2010-12-17 | 2012-07-04 | 杨忠义 | Bidirectional high-performance soft sealing butterfly valve |
| CN203560467U (en) * | 2013-11-18 | 2014-04-23 | 交城县鑫升机械有限公司 | Triple-eccentric metal hard-sealing butterfly valve |
| CN204437304U (en) * | 2015-02-09 | 2015-07-01 | 胡和锁 | A kind of butterfly valve seal structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150506 |
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| RJ01 | Rejection of invention patent application after publication |