CN2171049Y - Double sealing conceal rod type valve - Google Patents
Double sealing conceal rod type valve Download PDFInfo
- Publication number
- CN2171049Y CN2171049Y CN 92244563 CN92244563U CN2171049Y CN 2171049 Y CN2171049 Y CN 2171049Y CN 92244563 CN92244563 CN 92244563 CN 92244563 U CN92244563 U CN 92244563U CN 2171049 Y CN2171049 Y CN 2171049Y
- Authority
- CN
- China
- Prior art keywords
- valve
- sealing
- valve rod
- valve stem
- valves
- 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)
- Lift Valve (AREA)
Abstract
The utility model relates to a double sealing conceal rod type valve. A valve stem is divided into an upper valve stem part and a lower valve stem part, a projected rear seat is arranged at the middle part of the upper valve stem, and the rear seat forms a tight linear sealing with the inner side of a sealing gasket arranged in a valve cover cap, and an O-shaped sealing ring arranged between the lower part of the upper valve stem and a lower valve stem seat is used for secondary sealing. The utility model adopts two times of linear sealing, having the advantages of good tightness, little possibility of outleakage, wear resistance, no need of frequent fastening and replacement of sealing elements, simpler structure, portable and labor-saving opening and closing, and small height and dimension of the valve body. The utility model is suitable for the high, middle, and low pressure stop valves (needle valves), gate valves, and ball valves of oil, air, and water transmission pipelines, and is suitable for the sealing device parts between valve covers and valve rods of other various conceal rod type valves.
Description
The utility model is a kind of double-sealing blind rod type valve, is applicable to oil, gas, water, the high, medium and low pressure cutoff valve of conveyance conduit (needle value), gate valve, ball valve, also is applicable to the valve gap of other kinds blind rod type valve and the seal arrangement part between the valve rod.
At present, known stop valve (needle value), gate valve, ball valve, be to adopt sealed packing or the horizontal crush seal of seal washer between its valve gap and the valve rod, the hermetic unit surface of contact is big, and structure is complicated, in use after multiple switching rotation wearing and tearing, be easy to leak outside, need frequent fit sealing packing or seal washer, even throttle down, stop to produce and change.And the valve switch effort, the valve body height dimension is big.
The purpose of this utility model provides a kind of double-sealing blind rod type valve, and it adopts twice linear sealing, and good seal performance is difficult for leaking outside, and is wear-resistant, often do not need fastening and replacing, and structure is simpler, and switch is light laborsaving, and the valve body height dimension is less.
The purpose of this utility model is achieved in that its valve rod is divided into upper valve rod and lower valve rod two-part, is connected with pin between upper valve rod and the lower valve rod, or directly with being threaded.There is the back seat of protrusion at the upper valve rod middle part, and closely linear sealing between the inboard of the sealing gasket in the valve gap; It between the bottom of upper valve rod and the lower valve rod seat O-ring seals linear sealing for the second time.Lower valve rod and lower valve rod seat are for being threaded, and the lower valve rod lower end connects flap.When rotation hand wheel, upper valve rod only rotates, the connection pin of upper valve rod, and drive lower valve rod and flap rotation also move up and down; If for being threaded, then during the upper valve rod rotation, lower valve rod and flap only move up and down, and make valve closing or unlatching between upper valve rod and the lower valve rod.Valve is behind multiple switching rotation upper valve rod, between the sealing gasket inboard,, can adjust in upper valve rod back seat and the bonnet cap by the adjustment spring of valve gap inner chamber because of the micro-gap that the rotation wearing and tearing produce, adjust between spring and the upper valve rod back seat, packing ring is arranged and reduce to grind the steel ball of resistance.Be totally-enclosed sealing dress attitude between twice sealing surface of valve gap inner chamber, disposable fill up oiling agent after, can keep lubricated so that the valve gap inner chamber is long-term, prevent corrosion, can strengthen the sealability of twice sealing surface of valve gap inner chamber again.
Below in conjunction with drawings and Examples the utility model is further specified.
Accompanying drawing is this practical longitudinal section tectonic maps.
Among the figure:
1. valve body, 2. lower valve rod and flap, 3. lower valve rod seat, 4. valve gap, the 5.O RunddichtringO, the 6.8. packing ring is 7. adjusted spring, 9. steel ball, 10. sealing gasket, 11. bonnet cap, 12. upper valve rods, 13. handwheels.
In the accompanying drawing illustrated embodiment, upper valve rod (12) is connected with pin with lower valve rod (2), also can be with being threaded; Lower valve rod seat (3) is an independent parts, also can be as a whole with valve gap (4); Reduce to rotate the steel ball (9) of mill resistance, little in the valve specification, mill hinders under the also little situation, can save.
Claims (3)
1, a kind of double-sealing blind rod type valve, adopt twice linear sealing between its valve gap and the valve rod, it is characterized in that: valve rod is divided into upper valve rod and lower valve rod two-part, there is the back seat of protrusion at the upper valve rod middle part, and linear sealing closely between the inboard of the sealing gasket in the bonnet cap, the O RunddichtringO between the bottom of upper valve rod and the lower valve rod seat are linear sealing for the second time, and upper valve rod is pin with lower valve rod or is threaded, the lower valve rod lower end connects flap, and the valve gap inner chamber has the adjustment spring.
2, according to the described valve of claim 1., it is characterized in that: between the adjustment spring of valve gap inner chamber and the upper valve rod back seat steel ball is housed.
3, according to the described valve of claim 1., it is characterized in that: valve gap and lower valve rod seat are two independent sectors, also can be as a whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92244563 CN2171049Y (en) | 1992-12-13 | 1992-12-13 | Double sealing conceal rod type valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92244563 CN2171049Y (en) | 1992-12-13 | 1992-12-13 | Double sealing conceal rod type valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2171049Y true CN2171049Y (en) | 1994-07-06 |
Family
ID=33783794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92244563 Expired - Fee Related CN2171049Y (en) | 1992-12-13 | 1992-12-13 | Double sealing conceal rod type valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2171049Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332147C (en) * | 2004-06-16 | 2007-08-15 | 王培望 | Movable valves |
| CN102588623A (en) * | 2012-02-10 | 2012-07-18 | 北京竺港阀业有限公司 | Non-rising stem gate valve rod and valve cover ball-type connection structure and application scheme thereof |
| CN105587928A (en) * | 2016-03-14 | 2016-05-18 | 西诺威阀门控制（苏州）有限公司 | Sealing structure between valve cover and valve rod |
| CN108533557A (en) * | 2018-07-02 | 2018-09-14 | 长沙理工大学 | A kind of control pressurer system |
-
1992
- 1992-12-13 CN CN 92244563 patent/CN2171049Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332147C (en) * | 2004-06-16 | 2007-08-15 | 王培望 | Movable valves |
| CN102588623A (en) * | 2012-02-10 | 2012-07-18 | 北京竺港阀业有限公司 | Non-rising stem gate valve rod and valve cover ball-type connection structure and application scheme thereof |
| CN105587928A (en) * | 2016-03-14 | 2016-05-18 | 西诺威阀门控制（苏州）有限公司 | Sealing structure between valve cover and valve rod |
| CN108533557A (en) * | 2018-07-02 | 2018-09-14 | 长沙理工大学 | A kind of control pressurer system |
| CN108533557B (en) * | 2018-07-02 | 2019-09-06 | 长沙理工大学 | a pressure control system |
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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 |