CN204437304U - A kind of butterfly valve seal structure - Google Patents
A kind of butterfly valve seal structure Download PDFInfo
- Publication number
- CN204437304U CN204437304U CN201520092005.1U CN201520092005U CN204437304U CN 204437304 U CN204437304 U CN 204437304U CN 201520092005 U CN201520092005 U CN 201520092005U CN 204437304 U CN204437304 U CN 204437304U
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- dish plate
- circulation duct
- valve body
- sealed department
- valve
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Abstract
The utility model discloses a kind of butterfly valve seal structure, belong to mechanical design field, 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, the periphery of described sealed department and described dish plate is by cambered surface fitted seal.The technical solution of the utility model utilizes cambered surface fitted seal structure, effectively prevents the backflow of medium, effectively adds the sealability of dish valve in reverse pressure-bearing situation.
Description
Technical field
The utility model belongs to mechanical field, relates to a kind of seal arrangement, particularly relates 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.
Model utility content
In view of this, the utility model 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, the technical solution of the utility model 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 utility model is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the cross section structure schematic diagram of the utility model embodiment;
Fig. 3 is the structure for amplifying schematic diagram of the sealing configuration of the utility model embodiment;
Fig. 4 is the dish plate structure schematic diagram of the utility model embodiment;
Fig. 5 is the sealed department structural representation of the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technological scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
It should be noted that, when not conflicting, the embodiment in the utility model and the feature in embodiment can combine mutually.
Below with reference to accompanying drawing, concrete explaination is done to embodiment of the present utility model.
A kind of butterfly valve seal structure of embodiment of the present utility model 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.
Embodiment of the present utility model by cambered surface fitted seal structure, thus effectively prevents the backflow of medium, effectively adds the sealability of the butterfly valve of dish valve reverse pressure-bearing situation in prior art.
As shown in Figures 2 and 3, in embodiment of the present utility model, also comprise the trim ring 5 of annular.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 the utility model embodiment, 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 utility model 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 embodiment of the utility model above, but it is just as example, the utility model is not restricted to specific embodiment described above.To those skilled in the art, any equivalent modifications that the utility model is carried out and substituting also all among category of the present utility model.Therefore, not departing from the equalization conversion and amendment done under spirit and scope of the present utility model, all should be encompassed in scope of the present utility model.
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 |
|---|---|---|---|
| CN201520092005.1U CN204437304U (en) | 2015-02-09 | 2015-02-09 | A kind of butterfly valve seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520092005.1U CN204437304U (en) | 2015-02-09 | 2015-02-09 | A kind of butterfly valve seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204437304U true CN204437304U (en) | 2015-07-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520092005.1U Active CN204437304U (en) | 2015-02-09 | 2015-02-09 | A kind of butterfly valve seal structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN204437304U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104595506A (en) * | 2015-02-09 | 2015-05-06 | 胡和锁 | Butterfly valve seal structure |
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2015
- 2015-02-09 CN CN201520092005.1U patent/CN204437304U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104595506A (en) * | 2015-02-09 | 2015-05-06 | 胡和锁 | Butterfly valve seal structure |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |