CN217519242U - Three-eccentric hard sealing butterfly valve - Google Patents
Three-eccentric hard sealing butterfly valve Download PDFInfo
- Publication number
- CN217519242U CN217519242U CN202221171510.1U CN202221171510U CN217519242U CN 217519242 U CN217519242 U CN 217519242U CN 202221171510 U CN202221171510 U CN 202221171510U CN 217519242 U CN217519242 U CN 217519242U
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- Prior art keywords
- butterfly plate
- ring
- inclined plane
- butterfly
- sealing ring
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- 238000007789 sealing Methods 0.000 title claims abstract description 40
- 230000006835 compression Effects 0.000 claims abstract description 11
- 238000007906 compression Methods 0.000 claims abstract description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 239000002184 metal Chemical group 0.000 claims description 5
- 238000010030 laminating Methods 0.000 claims 1
- 238000005299 abrasion Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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Abstract
The utility model discloses a three eccentric butterfly valves that seal firmly relates to the butterfly valve field, solves the problem that present stage sealing ring fixed mounting brought. The sealing ring is installed on the butterfly plate through the pressing ring, the inner ring of the sealing ring is provided with a first inclined plane, the first inclined plane inclines outwards along the center of the butterfly plate, the pressing ring is elastically installed on the butterfly plate, a boss is fixedly arranged on the pressing ring, a gap is reserved between the boss and the butterfly plate, a second inclined plane is arranged on the boss, and the second inclined plane is matched with the first inclined plane in a staggered mode. The degree of compression of the sealing ring and the valve seat can be realized by adjusting the compression force of the compression ring on the sealing ring, so that when the butterfly valve is installed, the proper degree of compression is selected through proper adjustment to prevent excessive adhesion from causing abrasion of the sealing surface and leakage caused by insufficient adhesion.
Description
Technical Field
The utility model belongs to the technical field of the butterfly valve and specifically relates to a three eccentric butterfly valves that seal firmly.
Background
The butterfly valve has the characteristics of simple structure, convenience in opening and closing, low manufacturing cost and the like, and is widely applied to medium conveying pipeline systems in various industries of national economy. The sealing ring of the common triple-eccentric hard-seal butterfly valve is generally fixedly arranged on the butterfly plate, when the butterfly valve is opened and closed, the opening and closing moment is large due to the fact that the sealing ring is too tightly attached to the valve seat, and the sealing ring and the valve seat are very easy to damage. From another perspective, leakage occurs when the sealing ring is not tightly attached to the valve seat, which increases difficulty in manufacturing the product.
Disclosure of Invention
The utility model aims at: in order to overcome the defects of the prior art, the utility model provides a three eccentric hard seal butterfly valves solves the problem that the seal ring fixed mounting brought at present stage.
The technical scheme of the utility model: including sealing ring, butterfly plate, clamping ring and disk seat, the sealing ring passes through the clamping ring to be installed on the butterfly plate, and the inner circle of sealing ring has first inclined plane, and first inclined plane leans out along the butterfly plate center, and clamping ring elastic mounting is on the butterfly plate, and the fixed boss that is provided with on the clamping ring has the clearance between boss and the butterfly plate, is provided with the second inclined plane on the boss, and the cooperation is left out mutually on second inclined plane and the first inclined plane.
Adopt above-mentioned technical scheme, can realize the degree of sticising of sealing ring and disk seat through adjusting the pressure of pressing the ring to the sealing ring, consequently, when the butterfly valve installation, through proper regulation, select suitable degree of sticising to prevent that excessive hugging closely from causing the wearing and tearing of sealed face and hugging closely the leakage that causes inadequately.
The utility model discloses a further setting: threaded connection has the bolt on the clamping ring, and the bolt still with butterfly plate threaded connection, the pole of bolt body has still cup jointed the elastic component outward, and the both ends elasticity of elastic component supports and presses between butterfly plate and clamping ring.
By adopting the further arrangement, under the action of the medium pressure applying compression ring, the elastic piece contracts to perform elastic sealing compensation on the sealing ring, so that the valve seat is in close contact with the sealing ring, the sealing performance of the butterfly valve for reverse pressure bearing is improved, and the butterfly valve is not easy to leak.
The utility model discloses a further setting again: soft gaskets are respectively arranged between the sealing ring and the butterfly plate and between the butterfly plate and the compression ring.
Adopt above-mentioned further setting again, prevent that the sealing ring from receiving the clamping ring pressure impaired often, play the cushioning effect.
The utility model discloses a further setting again: the sealing ring is formed by alternately stacking a plurality of flaky graphite rings and metal rings.
By adopting the above further arrangement, the multi-layer sealing ring has good sealing effect, and the metal ring can protect the graphite ring from being crushed due to excessive extrusion.
The utility model discloses a still further set up: the outer surface of the butterfly plate is arched.
By adopting the above further arrangement, when the butterfly plate is impacted by the medium, the medium can be guided to flow towards the outer edge of the butterfly plate, so that the medium is prevented from impacting the butterfly plate too intensively, and the structural strength of the arched butterfly plate can be improved.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 according to the present invention;
wherein, 1, a sealing ring; 2. a butterfly plate; 3. pressing a ring; 4. a valve seat; 11. a first inclined plane; 31. a boss; 32. a gap; 311. a second inclined surface; 33. a bolt; 34. an elastic member; 5. a soft gasket.
Detailed Description
As shown in fig. 1 and 2, the triple-eccentric hard seal butterfly valve comprises a seal ring 1, a butterfly plate 2, a pressing ring 3 and a valve seat 4, wherein the seal ring 1 is installed on the butterfly plate 2 through the pressing ring 3, and the seal ring 1 and the valve seat 4 are sealed by being attached to each other through an inclined surface when the valve is closed. The inner ring of the sealing ring 1 is provided with a first inclined plane 11, the inclined direction of the first inclined plane 11 inclines outwards along the center of the butterfly plate 2, and the inclined angle is 5-10 degrees; the pressing ring 3 is elastically installed on the butterfly plate 2, the boss 31 is fixedly arranged on the pressing ring 3, a gap 32 for the boss 31 to transversely move is formed between the boss 31 and the butterfly plate 2, a second inclined surface 311 is formed on the outer side of the boss 31, and the second inclined surface 311 and the first inclined surface 11 are in the same inclined direction and are mutually staggered. Through adjusting the position of the press ring 3, the second inclined plane 311 of the boss 31 and the first inclined plane 11 are staggered with each other, so that the position of the seal ring 1 is finely adjusted, the clinging degree of the seal ring 1 and the valve seat 4 is adjusted, the opening and closing torque is reduced, and leakage can be prevented.
The bolt 33 is connected to the pressing ring 3 in a threaded mode, the bolt 33 is further connected with the butterfly plate 2 in a threaded mode, the elastic piece 34 is further sleeved outside the rod body of the bolt 33, the elastic piece 34 is a compression spring, and two ends of the elastic piece 34 elastically abut against between the butterfly plate 2 and the pressing ring 3, so that the pressing ring 3 is elastically installed on the butterfly plate 2. When medium pressure is applied to the compression ring 3, the boss 31 is stressed to move towards the inside of the gap 32, the elastic piece 34 contracts, the second inclined surface 311 and the first inclined surface 11 are staggered to press the sealing ring 1 to expand outwards in the radial direction, and the sealing performance of the sealing ring and the valve seat 4 is improved.
The sealing ring 1 is formed by alternately stacking a plurality of flake graphite rings and metal rings, wherein the graphite rings are made of graphite, and the metal rings are made of stainless steel 304.
The outer surface of the butterfly plate 2 is arched, and the butterfly plate 2 protrudes outwards along the central axis thereof to guide the medium to flow towards the outer edge of the butterfly plate 2.
Claims (5)
1. The utility model provides a three eccentric butterfly valves that seal firmly, including sealing ring, butterfly plate, clamping ring and disk seat, the sealing ring passes through the clamping ring to be installed on the butterfly plate, and it is sealed that the sealing ring passes through the inclined plane laminating with the disk seat when the valve is closed, its characterized in that: the inner circle of sealing ring has first inclined plane, first inclined plane leans out along the butterfly plate center, clamping ring elastic mounting is on the butterfly plate, the fixed boss that is provided with on the clamping ring, the clearance has between boss and the butterfly plate, be provided with the second inclined plane on the boss, the cooperation is left out mutually with first inclined plane on the second inclined plane.
2. The triple offset hard seal butterfly valve of claim 1, wherein: the bolt is connected with the compression ring in a threaded mode and is further connected with the butterfly plate in a threaded mode, the rod body of the bolt is further sleeved with the elastic piece, and the two ends of the elastic piece elastically abut against the portion between the butterfly plate and the compression ring.
3. The triple offset hard seal butterfly valve of claim 1 or 2, wherein: and soft gaskets are respectively arranged between the sealing ring and the butterfly plate and between the butterfly plate and the compression ring.
4. The triple offset hard seal butterfly valve of claim 1 or 2, wherein: the sealing ring is formed by alternately stacking a plurality of flaky graphite rings and metal rings.
5. The triple offset hard seal butterfly valve of claim 1 or 2, wherein: the outer surface of the butterfly plate is arched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221171510.1U CN217519242U (en) | 2022-05-16 | 2022-05-16 | Three-eccentric hard sealing butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221171510.1U CN217519242U (en) | 2022-05-16 | 2022-05-16 | Three-eccentric hard sealing butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217519242U true CN217519242U (en) | 2022-09-30 |
Family
ID=83390209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221171510.1U Active CN217519242U (en) | 2022-05-16 | 2022-05-16 | Three-eccentric hard sealing butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217519242U (en) |
-
2022
- 2022-05-16 CN CN202221171510.1U patent/CN217519242U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Room 101, Building 26, Zone 12, Wanyang Zhongchuang City, Bihu Town, Liandu District, Lishui City, Zhejiang Province, 323006 Patentee after: EFT Valve Technology Co.,Ltd. Country or region after: China Address before: 325102 Dongou Industrial Park, Oubei street, Yongjia County, Wenzhou City, Zhejiang Province (1st floor, building 3, Yongjia Chengyi Valve Co., Ltd.) Patentee before: Dagao Petrochemical Technology Co.,Ltd. Country or region before: China |