CN2656743Y - Stop cock with plastic lining - Google Patents
Stop cock with plastic lining Download PDFInfo
- Publication number
- CN2656743Y CN2656743Y CN 200320127142 CN200320127142U CN2656743Y CN 2656743 Y CN2656743 Y CN 2656743Y CN 200320127142 CN200320127142 CN 200320127142 CN 200320127142 U CN200320127142 U CN 200320127142U CN 2656743 Y CN2656743 Y CN 2656743Y
- Authority
- CN
- China
- Prior art keywords
- cock
- sealing
- valve body
- valve
- lining
- 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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- Taps Or Cocks (AREA)
Abstract
The utility model discloses a cock valve with plastic lining, comprising a valve body, a cock, a valve flap, sealing members, regulating members, a driving device, and installation members, which is characterized in that: the sealing surfaces of the valve body adopt a rib structure and O rings and sealing gaskets are added on the top of the cock to reduce the contact surface between the sealing surface of the valve body and that of the cock and lower the friction force between the cock top and the sealing package; an adjusting screw is provided on the cock top for adjusting the pretightening force of the cock for sealing performance. The utility model has a small pretightening torque for sealing performance, a small operating torque, good sealing performance, reliable operation, long product life, etc., which is especially applicable to large-sized, corrosive medium containing pipelines as an opening and closing device thereof.
Description
Technical field
The utility model relates to a kind of valve, specifically about a kind of lining tap of plastic valve.
Background technique
Existing lining is moulded the structure of stopcock and generally is made up of valve body, cock, valve gap, filler, handle.Valve body contacts with cock is whole, and frictional force is big, and sealing effect is bad, and top is filling-material structure, has increased the switching torque of valve, is not easy to the pretightening force of regulating cock simultaneously, and this class stopcock nominal pressure is less, and driving torque is big.Big or the electricity of operation labor intensity, gas transmission energy consumption are big, are generally below the 0.6MPa, are applicable to small-borely, have limited its using scope.
The model utility content
The purpose of this utility model provides that a kind of nominal pressure is bigger, and open and close torque is little, good sealing effect, and using scope is big, and the lining of long service life is moulded stopcock.
The technical solution of the utility model comprises valve body, cock, valve gap, seal element and transmission device, valve body and cock surface lining are moulded, and mainly are that valve body sealing surface is the annular convex rib structure, the cock lining is moulded superior posterior an annular groove, places " O " shape seal ring in the annular groove.
In above scheme, the adjusting screw of the sealing pretightening force of can regulate cock and valve body is housed on the valve gap.
The utility model beneficial effect compared with prior art is that valve body sealing surface is a convex rib structure, long-pending little with the sealing contact surface of cock, reduced the frictional force between cock sealing surface and the valve body sealing surface, the top of cock simultaneously is added with " O " shape seal ring and sealing gasket, reduced the frictional force between cock upper-end surface and the stuffing box packing, it is little to have the operation moment of torsion, good seal performance, advantages such as reliable operation.In addition, after on the valve gap adjusting screw being set, the sealing pretightening force between can regulate cock and the valve body prolongs product working life.
Description of drawings
Fig. 1 is a structure sectional view of the present utility model.
Embodiment
Now describe embodiment of the present utility model in conjunction with the accompanying drawings in detail.
Lining shown in Figure 1 is moulded stopcock, is made up of valve body 1, cock 2, valve gap 7 and transmission device 13.Transmission device 13 can adopt electronic, pneumatic, hydraulic actuator, and valve body 1 is moulded with cock 2 linings.Metal covering is processed several skewed slots before lining is moulded, and prevents plastic lining layer and metal-stripping.Valve body (1) sealing surface shapes by the method for mold pressing, and the sealing surface of projection has reduced the area of contact with cock 2, reduces the operation moment of torsion, is convenient to sealing.Cock 2 tops are processed with annular groove, place " O " shape seal ring 3, " O " shape seal ring 3 tops are provided with teflon gasket 4, reduce the frictional force of cock 2 switches, can prevent simultaneously that medium from leaking outside seals, be provided with adjusting screw 6 on valve gap 7, adjusting screw 6 is by the sealing pretightening force between spacer 5 regulating cocks 2 and the valve body 1.Transmission device 13 is connected with cock 2 with key 12 by passing through coupling shaft 11, and is fixed on the support 9 by bolt 10, and support 9 is fixed on the valve gap 7 by bolt 8.
Claims (2)
1, a kind of lining is moulded stopcock, comprise valve body (1), cock (2), valve gap (7), seal element and transmission device, valve body (1) and cock (2) surface lining are moulded, it is characterized in that described valve body (1) sealing surface is the ring-type convex rib structure, cock (2) lining is moulded superior posterior an annular groove, places " O " shape seal ring (3) in the annular groove.
2, lining according to claim 1 is moulded stopcock, it is characterized in that being equipped with on the valve gap (7) adjusting screw (6) of can regulate cock (2) and valve body (1) sealing pretightening force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320127142 CN2656743Y (en) | 2003-11-22 | 2003-11-22 | Stop cock with plastic lining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320127142 CN2656743Y (en) | 2003-11-22 | 2003-11-22 | Stop cock with plastic lining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2656743Y true CN2656743Y (en) | 2004-11-17 |
Family
ID=34349599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320127142 Expired - Fee Related CN2656743Y (en) | 2003-11-22 | 2003-11-22 | Stop cock with plastic lining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2656743Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216635A (en) * | 2012-12-26 | 2013-07-24 | 辽宁石化阀门制造有限公司 | Cock valve with replaceable valve seat |
| CN104653802A (en) * | 2015-03-05 | 2015-05-27 | 氟络塞尔特种阀门(苏州)有限公司 | Lining plug valve |
-
2003
- 2003-11-22 CN CN 200320127142 patent/CN2656743Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216635A (en) * | 2012-12-26 | 2013-07-24 | 辽宁石化阀门制造有限公司 | Cock valve with replaceable valve seat |
| CN104653802A (en) * | 2015-03-05 | 2015-05-27 | 氟络塞尔特种阀门(苏州)有限公司 | Lining plug valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |