CN201209674Y - Two-way flexible sealed butterfly valve - Google Patents
Two-way flexible sealed butterfly valve Download PDFInfo
- Publication number
- CN201209674Y CN201209674Y CNU2008200680880U CN200820068088U CN201209674Y CN 201209674 Y CN201209674 Y CN 201209674Y CN U2008200680880 U CNU2008200680880 U CN U2008200680880U CN 200820068088 U CN200820068088 U CN 200820068088U CN 201209674 Y CN201209674 Y CN 201209674Y
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- CN
- China
- Prior art keywords
- sealing
- valve
- butterfly
- sealing ring
- conical surface
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model relates to a bidirectional soft seal butterfly valve of a butterfly valve. A valve seat sealing surface on the valve body is a conical surface; a sealing ring is installed on a butterfly plate with an adjusting screw through a pressure plate; the cross surface of the sealing ring is a spherical flange; when forward sealing is realized, the spherical flange of the sealing ring is concave inward, and is jointed with the sealing surface of the conical surface of the valve seat in a self-adapting way, thereby the contact surface between the both parts is increased, and the sealing is tight; when the reverted sealing is realized, the indent of the flange of the sealing ring is recovered to a self-spherical shape, the flange of the sealing ring is still jointed with the sealing surface of the conical surface of the valve seat in a self-adapting way, the gap between the butterfly plate and the conical surface of the valve seat caused by the elastic deformation of the butterfly plate effected by medium in reverse direction is filled, and the sealing is tight. The butterfly valve can realize the bidirectional sealing with the cost of the product being not increased, enhance the market competitive power of the product, and is particularly applied to the operating mode for cutting bidirectional flowing medium in a pipeline.
Description
Technical field
The utility model relates to butterfly valve.
Background technique
Be used for industry pipe-line systems such as water conservancy, electric power, metallurgy, building materials, municipal administration and make the connection of medium or the butterfly valve that blocks, as shown in Figure 2: its seal ring 3 is contained on the butterfly plate 2, and the valve seat on the valve body 1 is a cone structure.When butterfly valve is in closed condition in pipeline, butterfly plate 2 produces resiliently deformable owing to be subjected to medium effect meeting, when the radial diameter dimensional changes of butterfly plate 2 descending with MEDIA FLOW when consistent, primary seal direction with valve, seal ring 3 on the butterfly plate 2 reaches good sealing effect at the valve base sealing line of being close under the medium effect on the valve body 1; When the radial diameter dimensional changes of butterfly plate 2 ascending with MEDIA FLOW when opposite, the seal ring 3 on the butterfly plate 2 breaks away from the valve base sealing line under the effect of medium power, it is big that the sealed diameter size becomes; When the distortion of the seal ring on the butterfly plate 23 can not provide the required seal pressure of butterfly valve, valve then produced leakage.Conventional solution is to increase butterfly plate thickness and increase the valve shaft diameter, reaches the purpose that reduces the butterfly plate distortion by strengthening module of anti-bending section.Though can be effective, increased cost greatly, reduced the competitiveness of product in market.
Summary of the invention
The purpose of this utility model is in order to overcome the deficiency of above-mentioned technology, a kind of improved double-sealing soft sealing butterfly valve has been proposed, by changing the sectional shape of seal ring, reasonable use the energy storage mode of rubber, improved the reverse sealability of butterfly valve, thereby made valve reach the purpose of two way sealed.
The technical solution of the utility model is finished in such a way:
The utility model comprises valve body, butterfly plate, seal ring, adjusting screw, and the sealing surface of seat on the valve body is the conical surface, and seal ring is connected on the butterfly plate by pressing plate and adjusting screw, and the cross section of described seal ring is spherical flange.When butterfly plate was in the sealing of sealing station forward, the spherical flange indent of seal ring was fitted with valve seat conical surface seal surface self-adaption, has strengthened both bonding areas, and the overall energy storage that makes seal ring is flange indent energy of deformation and whole outer swollen energy of deformation sum.When realizing the forward sealing, the flange indent is recovered self sphere, release in conjunction with whole outer swollen deformation-energy, still has the ability of fitting with valve seat conical surface seal surface self-adaption, make butterfly plate only be subjected to the medium masterpiece time spent, since resiliently deformable and being compensated with gap that valve seat conical surface seal face produces, and reach reverse sealing, thus realize the purpose of the double-sealing of valve.
The utility model has the advantages that:
The utility model is realized two way sealed under the prerequisite that does not increase product cost, improved the competitiveness of product in market, is specially adapted to the operating mode that the two-way flow medium blocks in the pipeline.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the structural representation of background technique butterfly valve.
Embodiment
Referring to Fig. 1: the sealing surface of seat of valve body 1 is the conical surface, and seal ring 3 is contained on the butterfly plate 2 by pressing plate 5 usefulness adjusting screw 4, and seal ring 3 usefulness rubber are made, and the cross section of seal ring 3 is spherical flange.
Referring to Fig. 2: valve body 1, butterfly plate 2, seal ring 3.
Claims (1)
1, a kind of two-way soft sealing butterfly valve that relates to butterfly valve, comprise valve body (1), butterfly plate (2), seal ring (3), adjusting screw (4), the valve base sealing of valve body (1) is the conical surface, seal ring (3) is connected on the butterfly plate (2) with adjusting screw by pressing plate (5), it is characterized in that: the cross section of seal ring (3) is spherical flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200680880U CN201209674Y (en) | 2008-06-20 | 2008-06-20 | Two-way flexible sealed butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200680880U CN201209674Y (en) | 2008-06-20 | 2008-06-20 | Two-way flexible sealed butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201209674Y true CN201209674Y (en) | 2009-03-18 |
Family
ID=40480410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200680880U Expired - Fee Related CN201209674Y (en) | 2008-06-20 | 2008-06-20 | Two-way flexible sealed butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201209674Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102221092A (en) * | 2011-05-23 | 2011-10-19 | 无锡科磊阀业有限公司 | Seal ring structure of flexible seal butterfly valve |
| CN108916397A (en) * | 2018-09-06 | 2018-11-30 | 温州上沃阀门科技有限公司 | The valve plate of eccentric hard sealed flygate seals installing mechanism |
| CN109099169A (en) * | 2018-09-05 | 2018-12-28 | 温州上沃阀门科技有限公司 | The valve plate fixed mechanism with sealing regulatory function of soft sealing butterfly valve |
| CN114017527A (en) * | 2021-10-18 | 2022-02-08 | 上海沪东造船阀门有限公司 | Maritime work ultralow-temperature check valve |
-
2008
- 2008-06-20 CN CNU2008200680880U patent/CN201209674Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102221092A (en) * | 2011-05-23 | 2011-10-19 | 无锡科磊阀业有限公司 | Seal ring structure of flexible seal butterfly valve |
| CN109099169A (en) * | 2018-09-05 | 2018-12-28 | 温州上沃阀门科技有限公司 | The valve plate fixed mechanism with sealing regulatory function of soft sealing butterfly valve |
| CN108916397A (en) * | 2018-09-06 | 2018-11-30 | 温州上沃阀门科技有限公司 | The valve plate of eccentric hard sealed flygate seals installing mechanism |
| CN114017527A (en) * | 2021-10-18 | 2022-02-08 | 上海沪东造船阀门有限公司 | Maritime work ultralow-temperature check valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HUBEI HONGCHENG GENERAL MACHINERY CO., LTD. Free format text: FORMER OWNER: HUBEI HONGCHENG UNIVERSAL MACHINERY CO., LTD. Effective date: 20140128 |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140128 Address after: Red Gate Road 434000 Hubei city of Jingzhou province No. 3 Patentee after: Hubei Hongcheng General Machinery Co., Ltd. Address before: 434000 Jingzhou city of Hubei Province, Shashi District Red Gate Road No. 3 Patentee before: Hubei Hongcheng General Machinery Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090318 Termination date: 20140620 |
|
| EXPY | Termination of patent right or utility model |