CN211924917U - Highly-sealed four-eccentric butterfly valve - Google Patents
Highly-sealed four-eccentric butterfly valve Download PDFInfo
- Publication number
- CN211924917U CN211924917U CN202020455949.1U CN202020455949U CN211924917U CN 211924917 U CN211924917 U CN 211924917U CN 202020455949 U CN202020455949 U CN 202020455949U CN 211924917 U CN211924917 U CN 211924917U
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- China
- Prior art keywords
- butterfly
- butterfly plate
- plate
- sealing ring
- valve
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- Expired - Fee Related
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Abstract
The utility model discloses a high sealed four eccentric butterfly valves, including valve body, valve rod and butterfly plate 3, its characterized in that: the outer circumference of the butterfly plate is provided with a butterfly plate sealing ring and a pressing plate which is matched with the butterfly plate to clamp and install the butterfly plate sealing ring, the inner circumferential surface of the butterfly plate is provided with a valve seat matched with the butterfly plate sealing ring, the butterfly plate sealing ring adopts a conical surface, the valve seat is arranged into a conical surface in interference fit with the conical surface of the butterfly plate sealing ring, the butterfly plate is provided with a plurality of threaded holes, the pressing plate is provided with a through hole which is opposite to the threaded hole and has a diameter larger than the external diameter of the thread of the bolt, and when the butterfly plate is matched to clamp, the pressing plate is abutted against; the utility model discloses the butterfly valve is in sealed back, because of the medium pressure differential at butterfly valve both ends, and the clamp plate that can the small size activity receives the medium high pressure down, and the further deformation of butterfly plate sealing washer that oppresses itself and the butterfly plate centre gripping compresses tightly is sealed with the disk seat for butterfly valve overall sealing performance is better.
Description
Technical Field
The utility model relates to a valve, more specifically say that it relates to a highly sealed four eccentric butterfly valves.
Background
The butterfly valve mainly experiences the evolution of following several structural forms in its development history, be respectively central line butterfly valve, single off-centre butterfly valve, two off-centre butterfly valves, three off-centre butterfly valves and four off-centre butterfly valves.
But the butterfly plate of the existing butterfly valve has a single structure, the sealing angle of the butterfly plate is not scientific enough, and the compensation effect and the sealing property of the whole sealing butterfly valve still have defects.
SUMMERY OF THE UTILITY MODEL
The utility model provides a four eccentric butterfly valves of high seal sets up the identical seal of the conical surface of taking the angle, sets up simultaneously that the movable clamp plate can provide the packing force along with medium pressure's reinforcing, for the butterfly plate sealing washer.
In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a highly sealed four eccentric butterfly valve, includes valve body, valve rod and butterfly plate, its characterized in that: the outer circumference of the butterfly plate is provided with a butterfly plate sealing ring and a pressing plate which is matched with the butterfly plate to clamp and install the butterfly plate sealing ring, the butterfly plate is provided with a plurality of threaded holes, and is in threaded connection with a plurality of bolts, the pressing plate is provided with a through hole which is opposite to the threaded holes and has a diameter larger than the threaded outer diameter of the bolts, when the pressing plate is matched with the butterfly plate for clamping, the pressing plate abuts against the butterfly plate sealing ring and a gap is reserved between the pressing plate and the butterfly plate, and the pressing plate can move; the inner circumferential surface of the valve body is provided with a valve seat matched with the butterfly plate sealing ring, the butterfly plate sealing ring adopts a conical surface, and the valve seat is arranged as a conical surface in interference fit with the conical surface of the butterfly plate sealing ring.
Through the arrangement of the scheme, the pressure plate presses the butterfly plate sealing ring pressed by the butterfly plate and the pressure plate to deform based on high pressure under the pressure of a medium in the pipeline, and the sealing property is further enhanced.
As a further arrangement of the scheme, the butterfly plate sealing ring adopts 304 and graphite wound gaskets.
Through the arrangement of the scheme, the function can be better realized by using 304 and graphite as materials, and the service life is prolonged.
As a further arrangement of the scheme, the butterfly plate sealing device further comprises a gasket arranged between the pressure plate and the butterfly plate, and the hardness of the gasket is smaller than that of the butterfly plate sealing ring.
As a further arrangement of the scheme, the butterfly valve is provided with a plurality of O-shaped rubber sealing rings and adopts flexible graphite as a filler.
As a further arrangement of the above scheme, the butterfly plate taper of the butterfly valve is 30 °.
As a further arrangement of the above, the cross-sectional area of the pressure plate is greater than the cross-sectional area 2/3 of the conduit.
Through the arrangement of the scheme, the larger the sectional area is, the stronger the pressing force of the medium in the pipeline is applied to the pressing plate, and the larger the pressure fed back to the butterfly plate sealing ring is.
To sum up, the utility model discloses following beneficial effect has:
the utility model discloses modified butterfly valve is in sealed back, because of the medium pressure differential in the pipeline at butterfly valve both ends, mobilizable clamp plate receives the medium high pressure down, oppresses itself and receives the butterfly plate sealing washer that the clamp plate compressed tightly further deformation for butterfly valve overall sealing performance is better, has adopted the interference conical surface to coincide sealedly, the sealed compensation effect of whole butterfly valve of solution that can be fine and the defect that the leakproofness is not enough.
Drawings
FIG. 1 is a schematic view of a butterfly valve according to the present embodiment;
FIG. 2 is a detailed view of the embodiment shown in FIG. 1-labeled A;
fig. 3 is a schematic view of a butterfly valve of the embodiment.
Reference numerals: 1. a valve body; 2. a valve stem; 3. a butterfly plate; 4. a butterfly plate sealing ring; 5. pressing a plate; 6. a valve seat; 7. a via hole; 8. a threaded hole; 9. a bolt; 12. a valve cavity; 13. a gasket.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The embodiment discloses a highly sealed four eccentric butterfly valve, as shown in fig. 1-3, including valve body 1, valve rod 2 and butterfly plate 3, its characterized in that: a butterfly plate sealing ring 4 and a pressing plate 5 matched with the butterfly plate 3 to clamp and install the butterfly plate sealing ring 4 are installed on the outer circumference of the butterfly plate 3, the butterfly plate 3 is provided with a plurality of threaded holes 8, and is in threaded connection with a plurality of bolts 9, when the pressing plate 5 is matched with the butterfly plate 3 to clamp, the pressing plate 5 abuts against the butterfly plate sealing ring 4 and a gap is reserved between the pressing plate and the butterfly plate 3, and the pressing plate 5 can move relative to the butterfly plate 3; the inner circumferential surface of the valve body 1 is provided with a valve seat 6 matched with the butterfly plate sealing ring 4, the butterfly plate sealing ring 4 adopts a conical surface, and the valve seat 6 is arranged as a conical surface in interference fit with the conical surface of the butterfly plate sealing ring 4.
Through the arrangement of the scheme, the pressure plate 5 presses the butterfly plate sealing ring 4 pressed by the butterfly plate 3 and the pressure plate 5 to deform based on high pressure under the pressure of a medium in the pipeline, and the sealing property is further enhanced.
As a further arrangement of the above scheme, the butterfly plate sealing ring 4 adopts 304 plus graphite wound gaskets.
Through the arrangement of the scheme, the function can be better realized by using 304 and graphite as materials, and the service life is prolonged.
As a further arrangement of the scheme, the butterfly valve further comprises a gasket arranged between the pressure plate 5 and the butterfly plate 3
13, the hardness of the gasket 13 is less than that of the butterfly plate sealing ring 4.
As a further arrangement of the scheme, the butterfly valve is provided with a plurality of O-shaped rubber sealing rings and adopts flexible graphite as a filler.
As a further arrangement of the above solution, the butterfly plate 3 of the butterfly valve has a taper of 30 °.
As a further arrangement of the above solution, the cross-sectional area of the pressure plate 5 is larger than the cross-sectional area 2/3 of the pipeline.
Through the arrangement of the scheme, the larger the sectional area is, the stronger the pressing force of the pressing plate 5 by the medium in the pipeline is, and the larger the pressure fed back to the butterfly plate sealing ring 4 is.
The utility model discloses modified butterfly valve is in sealed back, because of the medium pressure differential in the pipeline at butterfly valve both ends, under encapsulated situation, can the small amplitude activity the clamp plate 5 receive the medium high pressure down, oppress itself and receive 5 centre gripping of clamp plate to paste tight butterfly plate sealing washer 3 further deformations for butterfly valve overall sealing performance is better, has adopted the interference conical surface to coincide sealedly, the defect that the sealed compensation effect of the whole butterfly valve of solution that can be fine and leakproofness are not enough.
The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, any modification, equivalent replacement, or improvement made within the design concept of the present invention should be included within the protection scope of the present invention.
Claims (6)
1. The utility model provides a highly sealed four eccentric butterfly valve, includes valve body (1), valve rod (2) and butterfly plate (3), its characterized in that: the outer circumference of the butterfly plate (3) is provided with a butterfly plate sealing ring (4) and a pressing plate (5) which is matched with the butterfly plate (3) to clamp and install the butterfly plate sealing ring (4), the butterfly plate (3) is provided with a plurality of threaded holes (8) and is in threaded connection with a plurality of bolts (9), the pressing plate (5) is provided with a through hole (7) which is opposite to the threaded holes (8) and has a diameter larger than the external diameter of the threads of the bolts (9), when the pressing plate (5) is matched with the butterfly plate (3) to clamp, the pressing plate (5) is abutted against the butterfly plate sealing ring (4) and is spaced from the butterfly plate (3), and the pressing plate (5) can move relative to the butterfly plate; the inner circumferential surface of the valve body (1) is provided with a valve seat (6) matched with the butterfly plate sealing ring (4), the butterfly plate sealing ring (4) adopts a conical surface, and the valve seat (6) is arranged into a conical surface in interference fit with the conical surface of the butterfly plate sealing ring (4).
2. A highly sealed four-eccentric butterfly valve according to claim 1, wherein: the butterfly plate sealing ring (4) adopts 304 and graphite wound gaskets.
3. A highly sealed four-eccentric butterfly valve according to claim 1, wherein: the butterfly plate sealing ring is characterized by further comprising a gasket (13) arranged between the pressing plate (5) and the butterfly plate (3), wherein the hardness of the gasket (13) is smaller than that of the butterfly plate sealing ring (4).
4. A highly sealed four-eccentric butterfly valve according to claim 1, wherein: the butterfly valve is provided with a plurality of O-shaped rubber sealing rings and adopts flexible graphite as a filler.
5. A highly sealed four-eccentric butterfly valve according to claim 1, wherein: the taper of the butterfly plate (3) of the butterfly valve is 30 degrees.
6. A highly sealed four-eccentric butterfly valve according to claim 1, wherein: the sectional area of the pressure plate (5) is larger than the sectional area 2/3 of the pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020455949.1U CN211924917U (en) | 2020-04-01 | 2020-04-01 | Highly-sealed four-eccentric butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020455949.1U CN211924917U (en) | 2020-04-01 | 2020-04-01 | Highly-sealed four-eccentric butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211924917U true CN211924917U (en) | 2020-11-13 |
Family
ID=73349219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020455949.1U Expired - Fee Related CN211924917U (en) | 2020-04-01 | 2020-04-01 | Highly-sealed four-eccentric butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211924917U (en) |
-
2020
- 2020-04-01 CN CN202020455949.1U patent/CN211924917U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201113 |