CN105135047A - Valve cap/valve stem seal structure - Google Patents
Valve cap/valve stem seal structure Download PDFInfo
- Publication number
- CN105135047A CN105135047A CN201510635155.7A CN201510635155A CN105135047A CN 105135047 A CN105135047 A CN 105135047A CN 201510635155 A CN201510635155 A CN 201510635155A CN 105135047 A CN105135047 A CN 105135047A
- Authority
- CN
- China
- Prior art keywords
- valve
- valve rod
- seal
- 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.)
- Pending
Links
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The invention relates to a valve cap/valve stem seal structure which is characterized in that the lower end of the valve stem is a structure composed of at least two layers of truncated cones, the diameters of the truncated cones gradually decrease from bottom to top; the upper surface of each truncated cone is provided with a seal ring; grooves with the same shape and quantity as the truncated cones on the valve stem are arranged in the valve cap; and the middle of the end of the lower surface of the valve stem (the middle of the bottom of the bottommost truncated cone) is provided with a groove connected with a valve core shifting pin. After the seal structure is used for some time, the seal rings can be abraded (such as leakage), and the screw cap can be screwed down slightly to pull the valve stem upwards and tighten the seal rings until no leakage occurs. The seal structure has the advantages of simple structure, low cost, favorable seal effect and long service life, and is convenient to operate and easy for mounting and maintenance. The seal structure has wide application range, can be used on novel valves and can also be used on traditional ball valves, gate valves, butterfly valves and plug valves.
Description
Technical field
The present invention 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 object of the invention 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 object of the invention 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 invention 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 invention.
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 |
|---|---|---|---|
| CN201510635155.7A CN105135047A (en) | 2015-09-30 | 2015-09-30 | Valve cap/valve stem seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510635155.7A CN105135047A (en) | 2015-09-30 | 2015-09-30 | Valve cap/valve stem seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105135047A true CN105135047A (en) | 2015-12-09 |
Family
ID=54720515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510635155.7A Pending CN105135047A (en) | 2015-09-30 | 2015-09-30 | Valve cap/valve stem seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105135047A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2085882U (en) * | 1990-11-29 | 1991-10-02 | 沈志强 | Valve |
| JPH08261133A (en) * | 1995-03-28 | 1996-10-08 | Kubota Corp | Axial plunger type oil hydraulic motor |
| KR20040019137A (en) * | 2002-08-21 | 2004-03-05 | 정대우 | Ball valve |
| CN101806375A (en) * | 2010-04-12 | 2010-08-18 | 陈建成 | Valve rod leak-proof structure |
| CN204592353U (en) * | 2015-02-10 | 2015-08-26 | 浙江兰花实业有限公司 | A kind of water nozzle |
| CN205001648U (en) * | 2015-09-30 | 2016-01-27 | 陈成 | Valve bonnet and valve stem sealing structure |
-
2015
- 2015-09-30 CN CN201510635155.7A patent/CN105135047A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2085882U (en) * | 1990-11-29 | 1991-10-02 | 沈志强 | Valve |
| JPH08261133A (en) * | 1995-03-28 | 1996-10-08 | Kubota Corp | Axial plunger type oil hydraulic motor |
| KR20040019137A (en) * | 2002-08-21 | 2004-03-05 | 정대우 | Ball valve |
| CN101806375A (en) * | 2010-04-12 | 2010-08-18 | 陈建成 | Valve rod leak-proof structure |
| CN204592353U (en) * | 2015-02-10 | 2015-08-26 | 浙江兰花实业有限公司 | A kind of water nozzle |
| CN205001648U (en) * | 2015-09-30 | 2016-01-27 | 陈成 | Valve bonnet and valve stem sealing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151209 |
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| WD01 | Invention patent application deemed withdrawn after publication |