CN201428812Y - Vacuum bidirectional water seal butterfly valve - Google Patents
Vacuum bidirectional water seal butterfly valve Download PDFInfo
- Publication number
- CN201428812Y CN201428812Y CN2009201179348U CN200920117934U CN201428812Y CN 201428812 Y CN201428812 Y CN 201428812Y CN 2009201179348 U CN2009201179348 U CN 2009201179348U CN 200920117934 U CN200920117934 U CN 200920117934U CN 201428812 Y CN201428812 Y CN 201428812Y
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- CN
- China
- Prior art keywords
- sealing
- valve
- water
- butterfly
- butterfly plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a vacuum bidirectional water seal butterfly valve which comprises a valve body, a butterfly board, a valve base, a valve cover, a valve rod, a transmission mechanism, a sealing member and a mounting part. Symmetrical sealing surfaces are arranged on two lateral surfaces of the butterfly board; the valve base mutually matched with the two sealing surfaces of the butterfly board is arranged on the valve body; a sealing cavity is formed between the two sealing surfaces of the butterfly board; a water injection mechanism and a water drainage mechanism are arranged on the valve body; and the water injection port of the water injection mechanism and the water drainage outlet of the water drainage mechanism are communicated with the sealing cavity when the butterfly board is closed. A sealing cavity between two sealing pairs is sealed through injecting water when the valve is closed, so that the sealing performance of the two sealing pairs is improved. The utilitymodel ha the advantages of good sealing performance and bidirectional sealing and is applicable to pipelines with high sealing requirements under the working condition.
Description
Technical field
The utility model relates to a kind of butterfly valve, particularly about a kind of bidirectional sealed butterfly valve.
Background technique
The general structure of butterfly valve is made up of valve body, butterfly plate, valve seat, valve rod, driving mechanism, and soft seal and hard sealing structure are arranged.Butterfly plate and valve seat have the sealing curved surface that cooperatively interacts, and have simple in structure, open-close convenient, advantage that cost is low.Its shortcoming is that sealability is relatively poor, and one-way sealing is not suitable for the bi-directional medium operating mode.
Summary of the invention
The purpose of this utility model is the shortcoming that exists at prior art, the two-way water-stop butterfly valve of vacuum that a kind of good seal performance is provided, has the two way sealed function.
The technical solution of the utility model comprises valve body, butterfly plate, valve seat, valve gap, valve rod, driving mechanism, Sealing and assembling set, butterfly plate and valve seat have the sealing surface that cooperatively interacts, two sides that mainly are butterfly plate are provided with symmetrical sealing surface, valve body is provided with two valve seats that sealing surface cooperatively interacts with butterfly plate, between two sealing surfaces of butterfly plate, be shaped on Seal cage, valve body is provided with water injecting mechanism and drainage mechanism, and the Seal cage when the drain opening position of the water filling hole of described water injecting mechanism and drainage mechanism is closed with butterfly plate is communicated with.
In above technological scheme, adopt filler and water filling compound seal between valve rod and the valve gap.
The utility model beneficial effect compared with prior art is to constitute the double seal assistant structure between butterfly plate and the valve body, and water filling seals in the Seal cage between two sealing pairs, improves the sealability of two sealing pairs, has the advantage of good seal performance and two way sealed.
Description of drawings
Fig. 1 is the utility model structure sectional view.
Fig. 2 is a structural representation of the present utility model.
Embodiment
The two-way water-stop butterfly valve of vacuum as shown in Figure 1 and Figure 2, comprise valve body 1, butterfly plate 3, valve seat 7, valve gap 14, valve rod, driving mechanism 15, Sealing and assembling set, butterfly plate 3 has the sealing surface that cooperatively interacts with valve seat 7, the sealing surface of described butterfly plate 3 is made of seal ring 6, and sealing circle 6 is installed on the butterfly plate 3 by trim ring 5.Two sides of butterfly plate 3 are provided with the sealing surface of symmetry, valve body 1 is provided with the valve seat 7 that two sealing surfaces with butterfly plate 3 cooperatively interact, between two sealing surfaces of butterfly plate 3, be shaped on Seal cage 8, valve body 1 is provided with water injecting mechanism 10 and drainage mechanism 11, the Seal cage 8 of the drain opening position of the water filling hole of described water injecting mechanism 10 and drainage mechanism 11 during with butterfly plate 3 closed conditions is communicated with, after butterfly plate 3 is closed, by water injecting mechanism 10 to Seal cage 8 water fillings, strengthen the sealing of both sides sealing pair, before butterfly plate 3 is opened, bleed off the water filling of Seal cage 8 by drainage mechanism 11.Be provided with exhaust gear 12 on valve body 1, the Seal cage 8 of this exhaust gear 12 during with butterfly plate 3 closed conditions is communicated with.Valve rod comprises upper valve rod 4 and lower valve rod 2, and upper valve rod 4 is connected with butterfly plate 3 fixed installations by pin respectively with lower valve rod 2.Adopt filler and water filling compound seal between upper valve rod 4 and the valve gap 14, in the centre of filler water-injecting cavity 9 is set, this water-injecting cavity 9 connects water supply installation 13.
Claims (1)
1, the two-way water-stop butterfly valve of a kind of vacuum, comprise valve body (1), butterfly plate (3), valve seat (7), valve gap (14), valve rod, driving mechanism (15), Sealing and assembling set, butterfly plate (3) has the sealing surface that cooperatively interacts with valve seat (7), valve rod is made up of upper valve rod (4) and lower valve rod (2), it is characterized in that two sides of butterfly plate (3) are provided with the sealing surface of symmetry, valve body (1) is provided with the valve seat (7) that two sealing surfaces with butterfly plate (3) cooperatively interact, between two sealing surfaces of butterfly plate (3), be shaped on Seal cage (8), valve body (1) is provided with water injecting mechanism (10) and drainage mechanism (11), and the drain opening position of the water filling hole of described water injecting mechanism (10) and drainage mechanism (11) is communicated with the Seal cage (8) of butterfly plate (3) when closing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201179348U CN201428812Y (en) | 2009-04-16 | 2009-04-16 | Vacuum bidirectional water seal butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201179348U CN201428812Y (en) | 2009-04-16 | 2009-04-16 | Vacuum bidirectional water seal butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201428812Y true CN201428812Y (en) | 2010-03-24 |
Family
ID=42032550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201179348U Expired - Fee Related CN201428812Y (en) | 2009-04-16 | 2009-04-16 | Vacuum bidirectional water seal butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201428812Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102330842A (en) * | 2011-10-22 | 2012-01-25 | 无锡智能自控工程有限公司 | Valve rod sealing structure for cryogenic butterfly valve under ultralow temperature working condition |
| CN103016766A (en) * | 2012-12-28 | 2013-04-03 | 兰州高压阀门有限公司 | Special valve for carbonyl metallurgy technology |
-
2009
- 2009-04-16 CN CN2009201179348U patent/CN201428812Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102330842A (en) * | 2011-10-22 | 2012-01-25 | 无锡智能自控工程有限公司 | Valve rod sealing structure for cryogenic butterfly valve under ultralow temperature working condition |
| CN103016766A (en) * | 2012-12-28 | 2013-04-03 | 兰州高压阀门有限公司 | Special valve for carbonyl metallurgy technology |
| CN103016766B (en) * | 2012-12-28 | 2016-04-27 | 兰州高压阀门有限公司 | Special valve for carbonyl metallurgy technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100324 Termination date: 20110416 |