CN104676102A - Valve stem nut connecting device - Google Patents
Valve stem nut connecting device Download PDFInfo
- Publication number
- CN104676102A CN104676102A CN201310610953.5A CN201310610953A CN104676102A CN 104676102 A CN104676102 A CN 104676102A CN 201310610953 A CN201310610953 A CN 201310610953A CN 104676102 A CN104676102 A CN 104676102A
- Authority
- CN
- China
- Prior art keywords
- valve stem
- nut
- stem nut
- stem mut
- bushing
- 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
-
- 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
- F16K51/00—Other details not peculiar to particular types of valves or cut-off apparatus
Abstract
The invention discloses a valve stem nut connecting device. The valve stem connecting device comprises a valve stem nut, and a nut gland. A bushing and a bearing are arranged between the nut gland and the valve stem nut. The bearing is arranged at the bottom of the bushing. The bushing is made of a polytetrafluoroethylene material. A lubrication hole is opened between the valve stem nut and a shaft sleeve. In the scheme of the valve stem nut, the bushing is arranged between the valve stem nut and the nut gland, the bushing is made of the polytetrafluoroethylene material; polytetrafluoroethylene not only has the property of high temperature resistance, but also has a very low friction coefficient, thereby taking effect of lubrication and ensuring the valve stem nut to rotate flexibly. The lubrication hole is used for adding lubricant conveniently, thus making the swing generated in the rotation of the valve stem nut act on the bushing directly, avoiding the direct friction between the metals of the valve stem nut and the nut gland, and increasing the service life of the valve.
Description
Technical field
The present invention relates to a kind of connection set, particularly relate to the connection set between a kind of Stem Mut and nut gland.
Background technique
Valve switch is generally that the rotational motion by being arranged on the Stem Mut in bracket bearing case realizes.Stem Mut is subject to the effect of tensile stress, pressure stress and torque when rotating.During valve opening, Stem Mut is subject to downward tensile stress, and this power is passed to support by bearing.During valve closing, Stem Mut is subject to pressure stress upwards, and this power is passed to nut gland by bearing.The matching gap of Stem Mut and nut gland is excessive, produces to swing larger when Stem Mut rotates, and then produces and rubs, when rubbing serious, cause Stem Mut and nut gland sinters or nut gland damages phenomenon, affect the working life of valve.
Summary of the invention
For the technical problem of above-mentioned existence, the object of the invention is: propose a kind of Stem Mut of eliminating and swing, avoid the Stem Mut connection set that Stem Mut and nut gland sinter.
Technical solution of the present invention is achieved in that a kind of Stem Mut connection set, comprises Stem Mut, nut gland, is provided with lining, bearing between described nut gland and Stem Mut; Described bearing is arranged on lining bottom; Described lining adopts polytetrafluoroethylmaterial material to make; Lubrication hole is offered between described Stem Mut and axle sleeve.
Due to the utilization of technique scheme, the present invention compared with prior art has following advantages:
A kind of Stem Mut connection set of the present invention, by being provided with lining between Stem Mut and nut gland, lagging material selects polytetrafluoroethylmaterial material to make, teflon not only has resistant to elevated temperatures feature, and its friction factor is extremely low, lubrication can be made, ensure that Stem Mut rotates flexibly, lubrication hole is used for conveniently adding oiling agent, the swing that Stem Mut is formed when rotating acts on lining, avoid Stem Mut and the intermetallic direct friction of nut gland, improve the working life of valve.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, technical solution of the present invention is described further:
Accompanying drawing 1 is the structural representation of a kind of Stem Mut connection set of the present invention;
Wherein: 1, Stem Mut; 2, nut gland; 3, lining; 4, bearing; 5, lubrication hole.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described.
Accompanying drawing 1 is a kind of Stem Mut connection set of the present invention, comprises Stem Mut 1, nut gland 2, is provided with lining 3, bearing 4 between described nut gland 2 and Stem Mut 1; Described bearing 4 is arranged on the bottom of lining 3; Offer lubrication hole 5 between described Stem Mut 1 and axle sleeve 3, lubrication hole 5 is for conveniently adding oiling agent; Described lining 4 adopts polytetrafluoroethylmaterial material to make, not only high temperature resistant, and friction factor is extremely low, can make lubrication, and the design of bearing 4 ensure that the flexibility that Stem Mut 1 rotates.
The present invention program by being provided with lining 3 between Stem Mut 1 and nut gland 2, lining 3 material selection polytetrafluoroethylmaterial material is made, teflon not only has resistant to elevated temperatures feature, and its friction factor is extremely low, lubrication can be made, ensure that Stem Mut 1 rotates flexibly, lubrication hole 5 is for conveniently adding oiling agent, the swing that Stem Mut 1 is formed when rotating acts on lining 3, avoid Stem Mut 1 and the intermetallic direct friction of nut gland 2, improve the working life of valve.
Above-described embodiment is only for illustrating technical conceive of the present invention and feature; its object is to person skilled in the art can be understood content of the present invention and be implemented; can not limit the scope of the invention with this; all equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed in protection scope of the present invention.
Claims (1)
1. a Stem Mut connection set, comprises Stem Mut, nut gland, it is characterized in that: be provided with lining, bearing between described nut gland and Stem Mut; Described bearing is arranged on lining bottom; Described lining adopts polytetrafluoroethylmaterial material to make; Lubrication hole is offered between described Stem Mut and axle sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310610953.5A CN104676102A (en) | 2013-11-26 | 2013-11-26 | Valve stem nut connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310610953.5A CN104676102A (en) | 2013-11-26 | 2013-11-26 | Valve stem nut connecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104676102A true CN104676102A (en) | 2015-06-03 |
Family
ID=53311522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310610953.5A Pending CN104676102A (en) | 2013-11-26 | 2013-11-26 | Valve stem nut connecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104676102A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2311835B (en) * | 1996-04-03 | 1998-05-06 | Fmc Corp | Lubrication system for a gate valve stem |
| CN201246525Y (en) * | 2008-09-05 | 2009-05-27 | 江阴兴澄特种钢铁有限公司 | Blast furnace pressure equalizing blow off valve |
| CN201314381Y (en) * | 2008-12-23 | 2009-09-23 | 江苏神通阀门股份有限公司 | Butterfly valve for water granulated slag |
| CN102094987A (en) * | 2010-12-21 | 2011-06-15 | 上海神开石油化工装备股份有限公司 | Ultrahigh pressure flat plate gate valve |
| CN102829244A (en) * | 2012-07-27 | 2012-12-19 | 苏州市东立机械有限公司 | Valve-stem nut connecting device |
| CN202812454U (en) * | 2012-07-27 | 2013-03-20 | 苏州市东立机械有限公司 | Valve stem and nut connecting device |
-
2013
- 2013-11-26 CN CN201310610953.5A patent/CN104676102A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2311835B (en) * | 1996-04-03 | 1998-05-06 | Fmc Corp | Lubrication system for a gate valve stem |
| CN201246525Y (en) * | 2008-09-05 | 2009-05-27 | 江阴兴澄特种钢铁有限公司 | Blast furnace pressure equalizing blow off valve |
| CN201314381Y (en) * | 2008-12-23 | 2009-09-23 | 江苏神通阀门股份有限公司 | Butterfly valve for water granulated slag |
| CN102094987A (en) * | 2010-12-21 | 2011-06-15 | 上海神开石油化工装备股份有限公司 | Ultrahigh pressure flat plate gate valve |
| CN102829244A (en) * | 2012-07-27 | 2012-12-19 | 苏州市东立机械有限公司 | Valve-stem nut connecting device |
| CN202812454U (en) * | 2012-07-27 | 2013-03-20 | 苏州市东立机械有限公司 | Valve stem and nut connecting device |
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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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150603 |