CN216112203U - Double-eccentric soft-sealing fireproof butterfly valve - Google Patents
Double-eccentric soft-sealing fireproof butterfly valve Download PDFInfo
- Publication number
- CN216112203U CN216112203U CN202021425392.3U CN202021425392U CN216112203U CN 216112203 U CN216112203 U CN 216112203U CN 202021425392 U CN202021425392 U CN 202021425392U CN 216112203 U CN216112203 U CN 216112203U
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- soft
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- 238000007789 sealing Methods 0.000 title claims abstract description 27
- 239000002184 metal Substances 0.000 claims abstract description 17
- 239000002131 composite material Substances 0.000 claims abstract description 6
- 239000007779 soft material Substances 0.000 claims abstract description 4
- 230000002265 prevention Effects 0.000 claims abstract 2
- 238000000034 method Methods 0.000 abstract description 4
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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Abstract
The utility model provides a two off-center soft seal fire prevention butterfly valves, includes valve body, disk seat and valve rod, butterfly plate and valve rod linkage cooperation, and the disk seat adopts soft material, and butterfly plate edge and disk seat soft seal cooperation still are fixed with the metal PLASTIC LAMINATED between disk seat and valve body, and the butterfly plate edge forms soft or hard composite seal structure with the sealed cooperation of metal PLASTIC LAMINATED elastic contact simultaneously. The butterfly plate is reasonable in structure, the butterfly plate can be matched with the soft valve seat and the metal fireproof plate to form soft-hard composite sealing, and the sealing performance is very good. Even if the special working condition that the soft valve seat is damaged by high-temperature open fire occurs, the metal fireproof plate can not be damaged, and still can be in sealing fit with the butterfly plate, so that the reliability of the butterfly valve is greatly improved, and the running stability of the whole applied process pipeline is obviously improved.
Description
The technical field is as follows: the utility model relates to a butterfly valve, in particular to a double-eccentric butterfly valve.
Background art: many double eccentric butterfly valves adopt soft valve seats for soft sealing, but if special working conditions exist in applied process pipelines, high-temperature open fire can be generated, and the soft valve seats are easy to damage, so that sealing failure is caused. The common double-eccentric butterfly valve can not meet the requirements of special working conditions, and the operation reliability is not ideal.
The utility model content is as follows: aiming at the defects of the prior art, the utility model provides a double-eccentric soft-sealing fireproof butterfly valve capable of fireproof sealing.
The butterfly valve comprises a valve body, a valve seat and a valve rod, wherein a butterfly plate is in linkage fit with the valve rod, the valve seat is made of soft materials, the edge of the butterfly plate is in soft sealing fit with the valve seat, a metal fireproof plate is fixed between the valve seat and the valve body, and the edge of the butterfly plate is in elastic contact sealing fit with the metal fireproof plate at the same time to form a soft-hard composite sealing structure.
The butterfly plate is reasonable in structure, the butterfly plate can be matched with the soft valve seat and the metal fireproof plate to form soft-hard composite sealing, and the sealing performance is very good. Even if the special working condition that the soft valve seat is damaged by high-temperature open fire occurs, the metal fireproof plate can not be damaged, and still can be in sealing fit with the butterfly plate, so that the reliability of the butterfly valve is greatly improved, and the running stability of the whole applied process pipeline is obviously improved.
The utility model is further illustrated by the following figures and examples.
Description of the drawings: fig. 1 is a schematic diagram of the main structure of the embodiment.
Fig. 2 is an enlarged schematic view of a portion I of fig. 1.
Fig. 3 is a schematic view of the valve seat of fig. 2 in a damaged state.
The specific implementation mode is as follows: as shown in fig. 1 and 2, a valve seat 2 is arranged in a valve body 1, a vertical valve rod 4 can rotate, and a butterfly plate 3 is linked with the valve rod 4. The valve seat 2 is made of soft materials, the edge of the butterfly plate 3 is in soft sealing fit with the valve seat 2, a metal fireproof plate 5 is further fixed between the valve seat 2 and the valve body 1, and the edge of the butterfly plate 3 is in elastic contact sealing fit with the metal fireproof plate 5 simultaneously to form a soft-hard composite sealing structure.
This embodiment fastening connection has clamping ring 6 on valve body 1, and metal PLASTIC LAMINATED 5 is fixed through clamping ring 6 and valve body 1, and soft disk seat 2 relatively fixed is on clamping ring 6, more convenient assembly dismantlement like this. The sealing contact part of the metal fireproof plate 5 can be a smooth cambered surface, so that the butterfly plate 3 is not easy to scratch in the opening and closing process, and the sealing contact is more sufficient.
If a high-temperature open fire damages the soft valve seat 2, as shown in fig. 3, the metal fireproof plate 5 can not be damaged and still can be in sealing fit with the butterfly plate 3.
Claims (3)
1. The utility model provides a soft fire prevention butterfly valve that seals of two eccentrics, includes valve body, disk seat and valve rod, butterfly plate and valve rod linkage cooperation, characterized by: the valve seat (2) is made of soft materials, the edge of the butterfly plate (3) is in soft sealing fit with the valve seat (2), a metal fireproof plate (5) is fixed between the valve seat (2) and the valve body (1), and the edge of the butterfly plate (3) is in elastic contact sealing fit with the metal fireproof plate (5) to form a soft-hard composite sealing structure.
2. The double-eccentric soft-sealing fireproof butterfly valve according to claim 1, characterized in that: the sealing contact part of the metal fireproof plate (5) is a smooth cambered surface.
3. The double-eccentric soft-sealing fireproof butterfly valve according to claim 1 or 2, characterized in that: the valve body (1) is fixedly connected with a pressing ring (6), the metal fireproof plate (5) is fixed with the valve body (1) through the pressing ring (6), and the soft valve seat (2) is relatively fixed on the pressing ring (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021425392.3U CN216112203U (en) | 2020-07-20 | 2020-07-20 | Double-eccentric soft-sealing fireproof butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021425392.3U CN216112203U (en) | 2020-07-20 | 2020-07-20 | Double-eccentric soft-sealing fireproof butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216112203U true CN216112203U (en) | 2022-03-22 |
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ID=80685654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021425392.3U Active CN216112203U (en) | 2020-07-20 | 2020-07-20 | Double-eccentric soft-sealing fireproof butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216112203U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115711294A (en) * | 2022-10-31 | 2023-02-24 | 上海沪东造船阀门有限公司 | Combined sealing fireproof butterfly valve |
-
2020
- 2020-07-20 CN CN202021425392.3U patent/CN216112203U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115711294A (en) * | 2022-10-31 | 2023-02-24 | 上海沪东造船阀门有限公司 | Combined sealing fireproof butterfly valve |
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| GR01 | Patent grant |