CN2268821Y - Leakageproof structure for rotary valve rod - Google Patents
Leakageproof structure for rotary valve rod Download PDFInfo
- Publication number
- CN2268821Y CN2268821Y CN 96216642 CN96216642U CN2268821Y CN 2268821 Y CN2268821 Y CN 2268821Y CN 96216642 CN96216642 CN 96216642 CN 96216642 U CN96216642 U CN 96216642U CN 2268821 Y CN2268821 Y CN 2268821Y
- Authority
- CN
- China
- Prior art keywords
- valve rod
- rotary valve
- cover
- spring
- utility
- 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 leakageproof structure for a rotary valve rod, which comprises a valve body. The upper part of the rotary valve rod is provided with a spiral press cover and a spring, and an inner sealing cover which is arranged at the lower part of the rotary valve rod is pressed by the spiral press cover and the spring. The lower part of the rotary valve body is provided with a lug boss, the upper side of the lug boss is connected with an annular lug boss, and the upper side of the annular lug boss is provided with an outer sealing skidproof sleeve. Press sealing materials in a groove are pressed by a spring through a gasket which is arranged at the lower part of the spring, and a sealing rubber pad is pressed by the spring through a gasket and a press cover which are arranged at the upper part of the spring. The utility model has the advantages of good tightness, flexible rotation of the valve rod, convenient installation, energy saving, long service life, etc. The internal pressure of the utility model can be big and can be small, and the phenomenon of the leakage can not be generated after the utility model is used for a long time. The utility model is suitable for valves, such as a ball valve, a cock valve, a gate valve, etc.
Description
It is tap that only contains stopper or the cock technical field that rotatablely moves that the utility model relates to keying.
The anti-leakage structure of valve rotary valve rod in the past is, in the middle of valve body and valve rod, fill out with materials such as wicks, tighten with the spiral cover and the packing ring that are enclosed within on the valve rod, the seepage phenomenon often appears in the valve rod position, especially the high number of revolutions of fluid pressure is more like this for a long time, so waste oil or water, valve rod is fragile simultaneously, and working life is short.
The purpose of this utility model provides a kind of valve rotary valve rod anti-leakage structure, the principle that it mainly utilizes spring and self-pressure liquid that sealing material is compressed, solve the problems referred to above, had ne-leakage, energy-conservation, long service life, advantage of wide range of application.
The utility model is achieved in that a kind of valve rotary valve rod anti-leakage structure, it is characterized in that the rotary valve bottom is provided with a boss, be connected with annular boss above the boss, the inner sealing cover is equipped with in the rotary valve rod bottom, valve rod is rotatably assorted with it, the spiral cover on rotary valve rod top compresses the inner sealing cover by pressure spring, on annular boss, be combined with the anti-sliding sleeve of outer closure, in the groove of anti-skidding cover of outer closure and annular boss formation, be filled with the press seal material, being enclosed within the packing ring of pressure spring below it that inner sealing puts will compress material and compress sealing, by packing ring above it and spiral cover seal rubber pad is compressed sealing, the slit that has liquid to flow between outer closure cover and valve body cylinder.
Anti-skidding boss in the lower end of the anti-sliding sleeve of outer closure can be provided with, perhaps overlapping internal surface is anti-skid structures such as the rounding conical surface.
Above-mentioned press seal material can be butter rope, butter packing, asbestos rope, asbestos paper, rubber or oily cotton etc., this class material after water breakthrough compresses, percolating water no longer, and less with intermetallic slip resistance.
For seal rubber pad is sealed well, can between seal rubber pad and spiral cover, be provided with gland and packing ring, gland and packing ring are split type or for one, or directly and spiral cover become one.
The interior cover of the anti-sliding sleeve of outer closure can equal the internal diameter of annular boss, and is more reliable in order to make sealing, prevents that the sealing material is extruded, and preferably makes the internal diameter of the internal diameter of outer closure cover greater than annular boss.
The utility model has the advantages that: valve stem seal is good, rotates flexibly, and is easy for installation, can save water, the wet goods energy, and valve rod is not fragile, long service life, and internal pressure is changeable, and long-term the use the seepage phenomenon can not occur, need not keep in repair.Be particularly useful on the valves such as ball valve, stopcock, gate valve.
Below in conjunction with embodiment and accompanying drawing the utility model is further described, but not as to qualification of the present utility model.
Fig. 1 is a kind of ball-valve structure schematic representation of the utility model.
Among Fig. 1,14 is the valve rod spanner, rotary valve rod 13 bottoms have boss and annular boss, anti-sliding sleeve 3 of outer closure and 1 of valve body are gapped, liquid can flow into, spiral cover 12 is by spring 11, the inner sealing cover 7 that packing ring 9 will be enclosed within on the valve rod 13 compresses, be filled with butter rope 2 in the circular groove that anti-sliding sleeve 3 of the outer closure of anti-skidding boss and annular boss formed in the lower end was provided with, pressure spring 5, compresses seal rubber pad 8 by packing ring 62 compactings of butter rope by packing ring 4, seal rubber pad 8 another sides are by spiral cover 12, gland 10 and packing ring hold out against, make its sealing, except that spiral valve rod and annular boss rotation thereof, other all do not rotate.Because liquid enters the space of following spring 5, so liquid can stress on the butter rope 2, more makes 13 tight seals of butter rope 2 and valve.Anti-sliding sleeve 3 internal diameters of outer closure can form step less than the annular boss internal diameter, help improving sealing.The lower end square toes of valve rod 13 can be loaded onto valves such as ball valve, rotate the control valve folding.
Claims (5)
1, a kind of valve rotary valve rod anti-leakage structure, comprise valve body, be enclosed within the valve body spiral cover on the rotary valve rod, it is characterized in that the rotary valve bottom is provided with a boss, be connected with annular boss above the boss, the inner sealing cover is equipped with in the rotary valve rod bottom, valve rod is rotatably assorted with it, the spiral cover on top compresses the inner sealing cover by pressure spring, on annular boss, be combined with the anti-sliding sleeve of outer closure, in the groove of anti-skidding cover of outer closure and annular boss formation, be filled with the press seal material, being enclosed within the packing ring of pressure spring below it that inner sealing puts will compress material and compress sealing, by packing ring above it and spiral cover seal rubber pad is compressed sealing, the slit that has liquid to flow between outer closure cover and valve body cylinder.
2, rotary valve rod anti-leakage structure according to claim 1 is characterized in that described press seal material is that butter rope, butter packing, asbestos rope, rubber or oil are cotton.
3, rotary valve rod anti-leakage structure according to claim 1 is characterized in that being provided with gland and packing ring between seal rubber pad and spiral cover.
4, rotary valve rod according to claim 1 is characterized in that the anti-sliding sleeve lower end of outer closure is provided with interior anti-skidding boss.
5,, it is characterized in that the internal diameter of the internal diameter of the anti-sliding sleeve of outer closure greater than annular boss according to claim 1,2,3 or 4 described rotary valve rods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96216642 CN2268821Y (en) | 1996-06-21 | 1996-06-21 | Leakageproof structure for rotary valve rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96216642 CN2268821Y (en) | 1996-06-21 | 1996-06-21 | Leakageproof structure for rotary valve rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2268821Y true CN2268821Y (en) | 1997-11-26 |
Family
ID=33898061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96216642 Expired - Fee Related CN2268821Y (en) | 1996-06-21 | 1996-06-21 | Leakageproof structure for rotary valve rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2268821Y (en) |
-
1996
- 1996-06-21 CN CN 96216642 patent/CN2268821Y/en not_active Expired - Fee Related
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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 |