CN205001648U - Valve bonnet and valve stem sealing structure - Google Patents
Valve bonnet and valve stem sealing structure Download PDFInfo
- Publication number
- CN205001648U CN205001648U CN201520765482.XU CN201520765482U CN205001648U CN 205001648 U CN205001648 U CN 205001648U CN 201520765482 U CN201520765482 U CN 201520765482U CN 205001648 U CN205001648 U CN 205001648U
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- valve
- valve rod
- round platform
- valve gap
- sealing washer
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Abstract
The utility model provides a valve bonnet and valve stem sealing structure which the key lies in that the valve rod lower extreme is at least two -layer round platform structure, extremely down and upward the round platform diameter diminishes gradually, all is equipped with the sealing washer on every round platform, be equipped with in the valve gap with the valve rod on round platform shape, the corresponding recess of quantity, in the middle of the tip, round platform bottom promptly is middle, is equipped with the recess of connecting the case and stirring the round pin below the valve rod. After using a period, wearing and tearing can appear in the sealing washer, if the seepage appears, can be with transferring a luo cap to screw up downwards, the pulling valve rod upwards, the jam -packed sealing washer is until seepage not. The utility model discloses it is easy, with low costs, sealed effectual that simple structure, operation are lightly, the installation is maintained, long service life, the use is extensive, not only can be used in new -type valve on, use on also can being used in traditional ball valve, gate valve, butterfly valve, plug valve.
Description
Technical field
The utility model relates to the sealing configuration of a kind of valve gap and valve rod.
Background technique
Valve rod opens and closes light, sealing without leakage between valve rod and valve gap, is the important symbol whether measurement valve damages.
Valve leaks and is divided into interior leakage and leaks outside.Interior leakage refers to that spool closed condition is crossed valve from pipeline one end and flow to the other end.Leak outside and refer to and leak between valve gap and valve body, and leak between valve rod and valve gap.Consequently fluid is to pipeline external leakage.As materials such as hypertoxic, inflammable, explosive, radiation, once it is hardly imaginable to leak consequence.In actual applications, sealing material is aging, get rusty, excessive wear etc., is seal the most scabrous problem between valve gap and valve rod.Require valve seal leakproof, resistance to press operation light and flexible, long service life etc.Bellows fashion, filler mode (material such as graphite, tetrafluoro, asbestos), membrane valve mode are mostly adopted in sealing between traditional valve rod and valve gap.The most frequently used mode is filled: adopt pressure hurdle to compress, complete the external leakage between valve gap and valve rod.
For solving the leakage problems of valve rod and valve gap, the present inventor is invention " a kind of valve rod leak-proof structure " ZL201010149169.5 successively, the technology such as " a kind of valve rod with universal joint " ZL201420455932.Above two kinds of patents are invented high temperature, high pressure, wear-resisting high added value valve.But as being used in mesolow, middle low temperature just there will be cost high, produce and complicated, not easily universal shortcoming be installed.
Summary of the invention
The purpose of this utility model is: the sealing configuration designing a kind of new valve gap and valve rod, to be applicable to use on mesolow, middle Subzero valve, solve prior art sealing material aging, get rusty, excessive wear causes the problems such as valve leak.
Realizing the technological scheme that the utility model object takes is: valve rod lower end is at least two-layer frustum cone structure, diminishes gradually, be equipped with seal ring on each round platform to lower and upper round platform diameter; The groove corresponding with truncated conical shape on valve rod, quantity is provided with in valve gap; Valve rod on valve gap is rotary with one and adjusts silk nut;
Below valve rod in the middle of end, in the middle of namely bottom nethermost round platform, be provided with and connect the non-circular slot that spool stirs pin.
Below valve rod in the middle of end, in the middle of namely bottom nethermost round platform, be provided with a spool and stir pin.
Valve gap inwall is inlaid with one deck plastic inner lining.
Valve rod below tune silk nut is provided with a pressure bearing.
Good effect of the present utility model is: this apparatus structure is simple, it is light to operate, installation and maintenance easy, and cost is low, good sealing effect, long service life; Of many uses, not only can be used on new-type ceramic valve, also can be used on traditional ball valve, gate valve, butterfly valve, stopcock and use.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present utility model.
Embodiment
As shown in Figure 1, valve rod 1 lower end is two-layer frustum cone structure, and round platform 10 diameter is below greater than round platform 8 diameter above, is equipped with seal ring 7 on each round platform; In valve gap 6, be provided with two grooves 9 corresponding with truncated conical shape on valve rod 1, valve gap 6 inwall is inlaid with one deck plastic inner lining 12; Below valve rod 1 in the middle of end, in the middle of bottom the round platform 10 namely, be provided with and connect the non-circular slot 13 that spool stirs pin 11.Valve rod 1 epimere is plane with the bi-side that screw thread is corresponding, has two adjustment pin holes in the plane; Valve rod 1 upper end is through valve gap 6, and two seal rings 7 on the round platform of two, valve rod 1 lower end are close on two grooves 9 in valve gap 5 respectively; On valve rod 1 upper end valve gap 6, put pressure bearing 5, opening handle 4, adjust silk nut 3, silk nut 3 is adjusted in adjustment, valve rod 1 and valve gap 6 is compressed, is finally fixed by tune silk nut 3 with bayonet lock 2.
After using a period of time, seal ring 7 there will be wearing and tearing, and as there is seepage, tune silk Luo cap 3 can be tightened downwards, pull valve rod 1 upwards, jam-packed seal ring 7, until non-leakage, rear bayonet lock 2 blocks adjusts silk nut 3.When seal ring 7 may wear to a certain degree, seal ring is changed.
Claims (4)
1. a sealing configuration for valve gap and valve rod, is characterized in that: valve rod lower end is at least two-layer frustum cone structure, diminishes gradually, be equipped with seal ring on each round platform to lower and upper round platform diameter; The groove corresponding with truncated conical shape on valve rod, quantity is provided with in valve gap; Valve rod on valve gap is rotary with one and adjusts silk nut; Below valve rod in the middle of end, in the middle of namely bottom nethermost round platform, be provided with and connect the groove that spool stirs pin.
2. the sealing configuration of valve gap according to claim 1 and valve rod, is characterized in that: below valve rod in the middle of end, in the middle of namely bottom nethermost round platform, is provided with a spool and stirs pin.
3. the sealing configuration of valve gap according to claim 1 and valve rod, is characterized in that: on valve gap inwall, be inlaid with one deck plastic inner lining.
4. the sealing configuration of valve gap according to claim 1 and valve rod, is characterized in that: the valve rod below tune silk nut is provided with a pressure bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520765482.XU CN205001648U (en) | 2015-09-30 | 2015-09-30 | Valve bonnet and valve stem sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520765482.XU CN205001648U (en) | 2015-09-30 | 2015-09-30 | Valve bonnet and valve stem sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205001648U true CN205001648U (en) | 2016-01-27 |
Family
ID=55158536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520765482.XU Active CN205001648U (en) | 2015-09-30 | 2015-09-30 | Valve bonnet and valve stem sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205001648U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105135047A (en) * | 2015-09-30 | 2015-12-09 | 陈成 | Valve cap/valve stem seal structure |
-
2015
- 2015-09-30 CN CN201520765482.XU patent/CN205001648U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105135047A (en) * | 2015-09-30 | 2015-12-09 | 陈成 | Valve cap/valve stem seal structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |