CN2054120U - Butterfly valve base with external control retractility - Google Patents
Butterfly valve base with external control retractility Download PDFInfo
- Publication number
- CN2054120U CN2054120U CN 89206060 CN89206060U CN2054120U CN 2054120 U CN2054120 U CN 2054120U CN 89206060 CN89206060 CN 89206060 CN 89206060 U CN89206060 U CN 89206060U CN 2054120 U CN2054120 U CN 2054120U
- Authority
- CN
- China
- Prior art keywords
- butterfly valve
- external control
- elastic ring
- valve seat
- retractility
- 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.)
- Withdrawn
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Abstract
Disclosed is a butterfly valve base with external control retractility, which is used for a low-pressure butterfly valve with a large calibre. The utility model is composed of a sealing ring and an elastic ring. The low-pressure butterfly valve with a large caliber, which uses the valve base, has the advantages of no sliding friction between a sealing pair, zero wear for the sealing pair, long service life, low energy consumption, small on-off dynamic force, and short on-off time. Compared with the on-off dynamic force of the present butterfly valve and the on-off time of the present butterfly valve, in the utility model, the on-off dynamic force can be decreased by 60%-70%, and the on-off time is shortened by one half.
Description
The utility model relates to a kind of valve seat of low pressure large bore valves, particularly a kind of butterfly valve seat with external control stretchability.
In the prior art: the low pressure large-diameter butterfly valve is that seal ring is fixed on the butterfly plate, the metal ring valve seat places in the valve body, like this when valve opening and closing, sealing exists very big frictional force between paying, not only serious wear, life-span weak point are paid in sealing, and need bigger keying power, and power consumption is big, and opening and closing time is long.
The purpose of this utility model provides a kind of butterfly valve seat with external control stretchability.Adopt the low pressure large-diameter butterfly valve of this valve seat, fricton-tight friction between sealing is paid, sealing are paid does not have wearing and tearing, the life-span is long, need with opening and closing power little, the opening and closing time weak point.
The purpose of this utility model realizes by following technical proposals: a kind ofly be used for the butterfly valve seat low pressure large-diameter butterfly valve, that have the external control stretchability, it is by seal ring and have the elastic ring formation of " air intake ", seal ring and elastic ring force together with tackiness agent is sticking, seal ring is used to cut off ducted flowing medium, and elastic ring is used for the seal ring roof pressure at butterfly plate.
The low pressure large-diameter butterfly valve of the butterfly valve seat that use the utility model provides with external control stretchability, compare with low pressure large-diameter butterfly valve of the prior art: fricton-tight friction between sealing is paid, sealing is paid does not have wearing and tearing, the life-span is long, good seal performance, opening and closing time can shorten 1/2nd, required keying power can reduce 60-70%, and cost is low, and it is little to consume energy.
Concrete structure of the present utility model and accompanying drawing are provided by following examples:
Fig. 1 is for using the butterfly valve schematic representation of the butterfly valve seat with external control stretchability.
Fig. 2 is the A-A sectional view of Fig. 1.
Among the figure: 1-motor, 2-gearbox, 3-taper pin, 4-butterfly plate, 5-seal ring, 6-guard circle, 7-elastic ring, 8-pressing plate, 9-valve body, 10-screw, 11-valve rod.
With reference to the butterfly valve seat low pressure large-diameter butterfly valve, that have the external control stretchability that is used for shown in Figure 2, it comprises seal ring 5, has the elastic ring 7 and the guard circle 6 of one " air intake ".Seal ring 5 is made by butyronitrile rubber, elastic ring 7 is made by butyl rubber, guard circle 6 can be made with the material of acid-alkali-corrosive-resisting, seal ring 5 and elastic ring 7 usefulness tackiness agent-polyurethane or cyanoacrylate are sticking to force together, when the butterfly plate 4 of valve moved to closed position, elastic ring 7 added the enough gas of big pressure, elastic ring 7 swollen rising by " air intake ", seal ring 5 on butterfly plate 4, is realized valve seal by roof pressure; When valve need be opened, at first pass through " air intake " to elastic ring 7 releases, elastic ring 7 shrinks, and seal ring 5 breaks away from butterfly plates 4, and butterfly plate 4 just can be opened very like a cork.Guard circle 6 can prevent the influence to elastic ring of high temperature media and Korrosionsmedium.
Claims (4)
1, a kind of butterfly valve seat with external control stretchability is characterized in that it being to be made of seal ring 5 and the elastic ring 7 with " air intake ", and seal ring 5 and elastic ring 7 usefulness tackiness agents are sticking to force together.
2, the butterfly valve seat with external control stretchability according to claim 1 is characterized in that there is a guard circle 6 outside of elastic ring 7.
3, the butterfly valve seat with external control stretchability according to claim 1 is characterized in that elastic ring 7 made by butyl rubber.
4, the butterfly valve seat with external control stretchability according to claim 1 is characterized in that used tackiness agent is polyurethane or cyanoacrylate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89206060 CN2054120U (en) | 1989-04-20 | 1989-04-20 | Butterfly valve base with external control retractility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89206060 CN2054120U (en) | 1989-04-20 | 1989-04-20 | Butterfly valve base with external control retractility |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2054120U true CN2054120U (en) | 1990-03-07 |
Family
ID=4863185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89206060 Withdrawn CN2054120U (en) | 1989-04-20 | 1989-04-20 | Butterfly valve base with external control retractility |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2054120U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075525A (en) * | 2013-01-10 | 2013-05-01 | 淄博汇华阀业有限公司 | Elastic valve seat adapting along with pressure change |
| CN105003666A (en) * | 2015-06-24 | 2015-10-28 | 丁毅 | Round air door |
| CN105789006A (en) * | 2014-12-26 | 2016-07-20 | 中微半导体设备(上海)有限公司 | Focusing ring with adjustable height and height adjustment method thereof |
-
1989
- 1989-04-20 CN CN 89206060 patent/CN2054120U/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075525A (en) * | 2013-01-10 | 2013-05-01 | 淄博汇华阀业有限公司 | Elastic valve seat adapting along with pressure change |
| CN105789006A (en) * | 2014-12-26 | 2016-07-20 | 中微半导体设备(上海)有限公司 | Focusing ring with adjustable height and height adjustment method thereof |
| CN105789006B (en) * | 2014-12-26 | 2017-10-17 | 中微半导体设备(上海)有限公司 | A kind of Height Adjustable focusing ring and its height adjusting method |
| CN105003666A (en) * | 2015-06-24 | 2015-10-28 | 丁毅 | Round air door |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |