CN213982068U - Two-way metal seal butterfly valve - Google Patents
Two-way metal seal butterfly valve Download PDFInfo
- Publication number
- CN213982068U CN213982068U CN202022891379.3U CN202022891379U CN213982068U CN 213982068 U CN213982068 U CN 213982068U CN 202022891379 U CN202022891379 U CN 202022891379U CN 213982068 U CN213982068 U CN 213982068U
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- valve body
- valve
- butterfly
- sealing ring
- metal seal
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Abstract
The utility model discloses a two-way metal seal butterfly valve, when bearing high temperature forward pressure-bearing, the butterfly plate is compressed tightly on the valve body sealing washer by pressure, and the butterfly valve has better leakproofness. When bearing high temperature and reverse pressure, the fluid in the butterfly valve extrudes the butterfly plate to deform towards the direction far away from the sealing ring of the valve body. At the moment, the fluid in the butterfly valve flows into the pressure groove and simultaneously extrudes the pressure groove to force the valve body sealing ring to deform, so that the deformation of the butterfly plate is compensated, the valve body sealing ring is tightly attached to the butterfly plate, and a good reverse sealing effect is ensured. Compare in traditional butterfly valve, the two-way metal seal butterfly valve of this embodiment's high temperature sealing effect is better, and reverse bearing capacity is stronger.
Description
Technical Field
The utility model relates to a pressure valve technical field, concretely relates to two-way metal seal butterfly valve.
Background
In China, the bidirectional metal sealing butterfly valve is widely applied to many fields such as petroleum refining, long-distance pipelines, chemical industry, papermaking, pharmacy, water conservancy, electric power, municipal administration, steel and the like, and plays a significant role in national economy. The bidirectional metal sealing butterfly valve is mainly used as a mechanism for cutting off and adjusting a pipeline and has the characteristics of bidirectional pressure bearing, small flow resistance and reliable sealing.
When traditional two-way seal metal butterfly valve was used to high temperature high pressure environment, because the deformation of butterfly plate, lead to the butterfly valve to appear sealed not tight easily, reverse reveal serious scheduling problem, and the high temperature easily makes butterfly plate and valve body sealing washer overexpansion to make the butterfly plate card dead.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome the not enough of prior art existence, provide a sealed effectual, the difficult card of butterfly plate is dead, life is longer two-way metal seal butterfly valve.
In order to solve the technical problem, the utility model discloses a following technical scheme:
the utility model provides a two-way metal seal butterfly valve, includes the valve body, install the butterfly plate of opening and close the valve body in the valve body, be equipped with the valve body sealing washer between valve body and the butterfly plate, still install the clamp plate of pressing from both sides tight valve body sealing washer on the valve body, be equipped with the pressure tank on the terminal surface of one side with the clamp plate is connected on the valve body sealing washer, pressure tank and valve body intercommunication.
The bidirectional metal sealing butterfly valve is preferable, a flow guide channel is arranged on one side, close to the axle center of the valve body sealing ring, of the pressure groove, and the pressure groove is communicated with the valve body through the flow guide channel.
The two-way metal seal butterfly valve is preferable, the valve body sealing ring is provided with an inner ring surface which is abutted against the butterfly plate, the inner ring surface comprises a first conical surface and a second conical surface, and the intersection line of the first conical surface and the second conical surface is the minimum inner diameter part of the valve body sealing ring.
In the bidirectional metal sealing butterfly valve, preferably, the inner annular surface of the valve body sealing ring is further provided with an annular expansion groove.
In the above bidirectional metal seal butterfly valve, preferably, the section of the annular expansion groove is a circular arch.
In the bidirectional metal seal butterfly valve, preferably, an installation groove for installing an auxiliary sealing element is further formed in the outer annular surface where the valve body sealing ring is attached to the valve body.
According to the bidirectional metal sealing butterfly valve, preferably, the pressure plate is connected with the valve body through the bolt, and the anti-loosening gasket is arranged between the bolt head and the pressure plate.
In the above bidirectional metal seal butterfly valve, preferably, the anti-loose gasket is a disc spring.
Compared with the prior art, the utility model has the advantages of:
the utility model discloses a two-way metal seal butterfly valve, when bearing the forward pressure-bearing of high temperature, the butterfly plate is compressed tightly on the valve body sealing washer by pressure, and the butterfly valve has better leakproofness. When bearing high temperature and reverse pressure, the fluid in the butterfly valve extrudes the butterfly plate to deform towards the direction far away from the sealing ring of the valve body. At the moment, the fluid in the butterfly valve flows into the pressure groove and simultaneously extrudes the pressure groove to force the valve body sealing ring to deform, so that the deformation of the butterfly plate is compensated, the valve body sealing ring is tightly attached to the butterfly plate, and a good reverse sealing effect is ensured. Compare in traditional butterfly valve, the two-way metal seal butterfly valve of this embodiment's high temperature sealing effect is better, and reverse bearing capacity is stronger.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a partial sectional structural schematic view of a bidirectional metal seal butterfly valve.
Fig. 2 is a partially enlarged sectional structural schematic view of a bidirectional metal seal butterfly valve.
Fig. 3 is a schematic sectional structure view of the valve body sealing ring.
Illustration of the drawings:
1. a valve body; 2. a butterfly plate; 3. a valve body sealing ring; 31. a pressure tank; 32. a flow guide channel; 33. an inner ring surface; 331. a first conical surface; 332. a second tapered surface; 34. an annular expansion tank; 35. an outer annular surface; 36. mounting grooves; 4. pressing a plate; 5. a secondary seal; 6. a bolt; 7. a lock washer.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
As shown in fig. 1 to 3, the bidirectional metal seal butterfly valve of this embodiment includes a valve body 1, a butterfly plate 2 for opening and closing the valve body 1 is installed in the valve body 1, a valve body seal ring 3 is installed between the valve body 1 and the butterfly plate 2, a pressing plate 4 for clamping the valve body seal ring 3 is further installed on the valve body 1, a pressure groove 31 is formed in an end surface of one side of the valve body seal ring 3, which is connected with the pressing plate 4, and the pressure groove 31 is communicated with the valve body 1. When the butterfly valve is positively loaded by high temperature, the butterfly plate 2 is pressed on the valve body sealing ring 3 by pressure, and the butterfly valve has better sealing property. When the butterfly valve is subjected to high temperature and reverse pressure bearing, fluid in the butterfly valve extrudes the butterfly plate 2 to deform towards the direction far away from the valve body sealing ring 3. At this moment, the fluid in the butterfly valve flows into the pressure groove 31 and simultaneously extrudes the pressure groove 31 to force the valve body sealing ring 3 to deform, so that the deformation of the butterfly plate 2 is compensated, the valve body sealing ring 3 is tightly attached to the butterfly plate 2, and a good reverse sealing effect is ensured. Compare in traditional butterfly valve, the two-way metal seal butterfly valve of this embodiment's high temperature sealing effect is better, and reverse bearing capacity is stronger.
In this embodiment, a flow guide channel 32 is disposed on one side of the pressure groove 31 close to the axis of the valve body sealing ring 3, and the pressure groove 31 is communicated with the valve body 1 through the flow guide channel 32. The fluid in the valve body 1 flows into the pressure groove 31 from the side close to the axle center of the valve body sealing ring 3 through the flow guide channel 32, and the flow guide channel 32 can ensure that the fluid can freely circulate in the pressure groove 31 and the valve body 1, so that the fluid pressure is applied to the valve body sealing ring 3.
In this embodiment, the valve body sealing ring 3 is provided with an inner annular surface 33 abutting against the butterfly plate 2, the inner annular surface 33 includes a first tapered surface 331 and a second tapered surface 332, and an intersection line of the first tapered surface 331 and the second tapered surface 332 is a minimum inner diameter position of the valve body sealing ring 3. The taper direction of the second taper surface 332 is the same as the taper direction of the butterfly plate 2, and the taper direction of the first taper surface 331 is opposite to the taper direction of the butterfly plate 2. When the butterfly valve is closed, the butterfly plate 2 is tightly pressed on the first conical surface 331 and the second conical surface 332, so that the butterfly plate 2 and the first conical surface 331 and the second conical surface 332 have wider contact areas, and the sealing performance of the butterfly valve is ensured.
In this embodiment, an annular expansion groove 34 is further provided on the inner annular surface 33 of the valve body sealing ring 3. When the butterfly valve is in a high-temperature environment for a long time, the valve body sealing ring 3 is heated and expanded, but due to the existence of the annular expansion groove 34, the valve body sealing ring is expanded into the annular expansion groove 34, so that expansion extrusion on the butterfly plate 2 is reduced, and the butterfly plate 2 is prevented from being blocked by the valve body sealing ring 3.
In this embodiment, the annular expansion groove 34 has a circular arch shape in cross section. The stress is prevented from being concentrated on the bottom of the annular expansion groove 34 to crack and damage the expansion groove, so that the service life of the valve body sealing ring 3 is prolonged.
In this embodiment, an installation groove 36 for installing the auxiliary sealing member 5 is further provided on the outer annular surface 35 where the valve body sealing ring 3 and the valve body 1 are attached to each other. The auxiliary sealing element 5 is an O-ring. During operation, the butterfly plate 2 extrudes the valve body sealing ring 3, the valve body sealing ring 3 further extrudes the O-shaped sealing ring in the mounting groove 36, the sealing performance of the joint of the outer annular surface 35 of the valve body sealing ring 3 and the valve body 1 is enhanced, and the sealing performance of the bidirectional metal sealing butterfly valve is further improved.
In this embodiment, the pressure plate 4 is connected to the valve body 1 through a bolt 6, and a lock washer 7 is disposed between the head of the bolt 6 and the pressure plate 4. The locking gasket 7 can prevent that the bolt 6 from becoming flexible, keeps the clamp force of clamp plate 4 to valve body sealing washer 3, prevents that valve body sealing washer 3 from sliding to guarantee the leakproofness of valve body sealing washer 3.
In this embodiment, the anti-loose pad 7 is a disc spring. The disc spring has the advantages of large load, short stroke, small required space, convenient combination and use, easy maintenance and replacement, high economic safety and the like, and is suitable for the valve body with smaller installation space. The head of the bolt 6 and the pressing plate 4 are connected in series by adopting a four-disc spring stacking method, so that the compression stroke of the disc springs is increased, larger pretightening force is provided for the bolt 6, and the bolt 6 is better prevented from loosening.
The above description is only the preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. For those skilled in the art, the modifications and changes obtained without departing from the technical idea of the present invention shall be considered as the protection scope of the present invention.
Claims (8)
1. The utility model provides a two-way metal seal butterfly valve, includes valve body (1), install butterfly plate (2) of opening and close valve body (1) in valve body (1), be equipped with valve body sealing washer (3) between valve body (1) and butterfly plate (2), still install clamp plate (4) of pressing from both sides tight valve body sealing washer (3) on valve body (1), its characterized in that: the valve body sealing ring (3) is provided with a pressure groove (31) on the end face of one side connected with the pressure plate (4), and the pressure groove (31) is communicated with the valve body (1).
2. The bidirectional metal seal butterfly valve of claim 1, wherein: one side, close to the axle center of the valve body sealing ring (3), of the pressure groove (31) is provided with a flow guide channel (32), and the pressure groove (31) is communicated with the valve body (1) through the flow guide channel (32).
3. The bidirectional metal seal butterfly valve of claim 1, wherein: the valve body sealing ring (3) is provided with an inner ring surface (33) which is abutted to the butterfly plate (2), the inner ring surface (33) comprises a first conical surface (331) and a second conical surface (332), and the intersection line of the first conical surface (331) and the second conical surface (332) is the minimum inner diameter part of the valve body sealing ring (3).
4. The bidirectional metal seal butterfly valve of claim 3, wherein: an annular expansion groove (34) is further formed in the inner annular surface (33) of the valve body sealing ring (3).
5. The bidirectional metal seal butterfly valve of claim 4, wherein: the section of the annular expansion groove (34) is in a circular arch shape.
6. The bidirectional metal seal butterfly valve of claim 4, wherein: and an installation groove (36) for installing the auxiliary sealing element (5) is also formed in the outer annular surface (35) of the valve body sealing ring (3) attached to the valve body (1).
7. A two-way metal-sealed butterfly valve according to any one of claims 1 to 6, wherein: the pressure plate (4) is connected with the valve body (1) through a bolt (6), and a locking gasket (7) is arranged between the head of the bolt (6) and the pressure plate (4).
8. The bidirectional metal seal butterfly valve of claim 7, wherein: the anti-loosening gasket (7) is a disc spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022891379.3U CN213982068U (en) | 2020-12-02 | 2020-12-02 | Two-way metal seal butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022891379.3U CN213982068U (en) | 2020-12-02 | 2020-12-02 | Two-way metal seal butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213982068U true CN213982068U (en) | 2021-08-17 |
Family
ID=77239937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022891379.3U Expired - Fee Related CN213982068U (en) | 2020-12-02 | 2020-12-02 | Two-way metal seal butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213982068U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114321404A (en) * | 2021-12-25 | 2022-04-12 | 上海阀门厂股份有限公司 | Two-way seal structure of butterfly valve |
-
2020
- 2020-12-02 CN CN202022891379.3U patent/CN213982068U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114321404A (en) * | 2021-12-25 | 2022-04-12 | 上海阀门厂股份有限公司 | Two-way seal structure of butterfly valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210817 Termination date: 20211202 |
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| CF01 | Termination of patent right due to non-payment of annual fee |