CN201162846Y - Double-eccentric semi-sphere ball valve - Google Patents
Double-eccentric semi-sphere ball valve Download PDFInfo
- Publication number
- CN201162846Y CN201162846Y CNU2008200843394U CN200820084339U CN201162846Y CN 201162846 Y CN201162846 Y CN 201162846Y CN U2008200843394 U CNU2008200843394 U CN U2008200843394U CN 200820084339 U CN200820084339 U CN 200820084339U CN 201162846 Y CN201162846 Y CN 201162846Y
- Authority
- CN
- China
- Prior art keywords
- valve
- valve seat
- seat
- valve body
- spool
- 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 double eccentric hemispheric ball valve, which comprises a valve body, a valve core, a valve stem, a valve seat, a valve cover, a sealing element and an installation part, wherein, the rotation center of the valve core and the center of the sphere have eccentricity in a direction which is parallel to a plane direction formed by the axis of the valve stem and the center line of the valve body. The double eccentric hemispheric ball valve of the utility model mainly refers to that the pressure plate of the valve seat is arranged on the valve body, an elastic sealing gasket is arranged between the valve seat and the pressure plate of the valve seat, and in the process of opening and closing a valve, the valve seat can float; therefore, the middle part of the valve core and the valve seat has the advantages of low friction, little wear, long service life, and the like; and is suitable for a control valve under the working condition of a high-temperature and wear medium.
Description
Technical field
The utility model relates to a kind of ball valve, specifically about a kind of eccentric semi-spherical ball valve.The utility model is applicable to the pipeline valve of industries such as oil, chemical industry, papermaking, electric power, pharmacy.
Background technique
The compact structure of eccentric semi-spherical ball valve, the spool volume is little, and circulation is good, both can be used for modulating valve, can be used for rapid cut-off valve again, is widely used in each industrial pipeline transporting system.Common eccentric semi-spherical ball valve generally is that to be fixed in valve body be that spool is a hemisphere to valve seat, its gyration center and sphere centre exist eccentric, are an eccentric cam structure, in the valve closing process, rotate at spool wraparound commentaries on classics center, the automatic wedging valve seat of its sphere, good seal.Its shortcoming is that the frictional force between spool and the valve seat is big in the opening-closing process, and wearing and tearing between the two are big, and valve is short working life.
Summary of the invention
The purpose of this utility model is the shortcoming that exists at prior art, provides in a kind of opening-closing process the frictional force between the spool and valve seat little, and it is little to wear and tear between the two, the double eccentric half ball ball valve of valve long service life.
The technical solution of the utility model comprises valve body, spool, valve rod, valve seat, valve gap and Sealing and assembling set, the gyration center of spool and sphere centre, on the in-plane that is parallel to valve rod axis and valve body center line formation, exist eccentric, mainly be that valve seat is installed on the valve body by disc holder, between valve seat and disc holder, be provided with elastic sealing gasket.
The utility model has the advantages that valve seat can float in the valve opening and closing process, make the frictional force between spool and the valve seat little, it is little to wear and tear, long service life.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
Double eccentric half ball ball valve as shown in Figure 1, comprise valve body 1, spool 11, upper valve rod 12, valve seat 10, valve gap 3 and Sealing and assembling set, on the in-plane that is parallel to upper valve rod 12 axis and valve body 1 center line formation, exist eccentric between the gyration center of spool 11 and the sphere centre, make upper valve rod 12 and spool 11 become an eccentric cam structure, in the valve closing process, rotate at spool 11 wraparound commentaries on classics centers, the automatic wedging valve seat of its sphere, when valve closing is opened, hightail between spool 11 and the valve seat 10 and contact, reduce wearing and tearing between the two.Valve seat 10 is installed on the valve body 1 by disc holder 14, and is provided with sealing gasket 8 between the valve body 1.Be provided with elastic sealing gasket 9 between valve seat 10 and disc holder 14, valve seat 10 can be floated in valve body 1 channel direction, it is stuck to avoid between spool 11 and the valve seat 10 high temperature to expand.The lower end of spool 11 is connected with lower valve rod 6, is provided with Lower shaft sleeve 7 between the two, is provided with seal ring 5 between lower valve rod 6 and the valve body 1.Valve gap 3 is installed on the valve body 1 by screw 4, and is provided with seal ring 2 between the valve body 1.Be provided with Upper shaft sleeve 13, Packing seat 15, filler 17 between upper valve rod 12 and the valve body 1, filler 17 upper ends are press-fited by Gland 18, and the valve body 1 in filler 17 outsides is provided with the filler filling hole, and this filler filling hole is by plug screw 16 sealings.Support 20 is by on the bolt 19 fixed installation valve bodies 1, and transmission device 21 is fixedly installed on the support 20.
Claims (1)
1, a kind of double eccentric half ball ball valve, comprise valve body (1), spool (11), upper valve rod (12), valve seat (10), valve gap (3) and Sealing and assembling set, on the in-plane that is parallel to upper valve rod (12) axis and valve body (1) center line formation, exist eccentric between the gyration center of spool (11) and the sphere centre, it is characterized in that valve seat (10) is installed on the valve body (1) by disc holder (14), is provided with elastic sealing gasket (9) between valve seat (10) and disc holder (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200843394U CN201162846Y (en) | 2008-03-14 | 2008-03-14 | Double-eccentric semi-sphere ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200843394U CN201162846Y (en) | 2008-03-14 | 2008-03-14 | Double-eccentric semi-sphere ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201162846Y true CN201162846Y (en) | 2008-12-10 |
Family
ID=40183783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200843394U Expired - Fee Related CN201162846Y (en) | 2008-03-14 | 2008-03-14 | Double-eccentric semi-sphere ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201162846Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401145A (en) * | 2010-09-14 | 2012-04-04 | 上海伟伦阀门有限公司 | Multi-sealed eccentric ball valve |
| CN102606759A (en) * | 2011-01-20 | 2012-07-25 | 陆功工业股份有限公司 | Arc-shaped valve |
| CN104132158A (en) * | 2013-05-02 | 2014-11-05 | 刘海亮 | Modular-design rotating type forced seal control valve |
| CN104132157A (en) * | 2013-05-02 | 2014-11-05 | 刘海亮 | Forced seal valve with modular design and angular travel operation |
-
2008
- 2008-03-14 CN CNU2008200843394U patent/CN201162846Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401145A (en) * | 2010-09-14 | 2012-04-04 | 上海伟伦阀门有限公司 | Multi-sealed eccentric ball valve |
| CN102606759A (en) * | 2011-01-20 | 2012-07-25 | 陆功工业股份有限公司 | Arc-shaped valve |
| CN104132158A (en) * | 2013-05-02 | 2014-11-05 | 刘海亮 | Modular-design rotating type forced seal control valve |
| CN104132157A (en) * | 2013-05-02 | 2014-11-05 | 刘海亮 | Forced seal valve with modular design and angular travel operation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081210 Termination date: 20160314 |