CN203880210U - Lubrication protection structure for valve rod nut part of small-aperture valve - Google Patents
Lubrication protection structure for valve rod nut part of small-aperture valve Download PDFInfo
- Publication number
- CN203880210U CN203880210U CN201420044617.9U CN201420044617U CN203880210U CN 203880210 U CN203880210 U CN 203880210U CN 201420044617 U CN201420044617 U CN 201420044617U CN 203880210 U CN203880210 U CN 203880210U
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- CN
- China
- Prior art keywords
- thrust
- bearing
- valve
- type circle
- rod nut
- 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 discloses a lubrication structure for a valve rod nut part of a small-aperture valve. The technical key points of the lubrication structure are that an installation position of a valve rod nut is provided with a plurality of O-shaped rings entirely enclosing space, in which two thrust bearings coated with lubricating grease lie; one O-shaped ring is placed under the thrust bearing on the lower side; the other O-shaped ring is arranged over the thrust bearing on the upper side; another O-shaped ring is mounted on a junction surface formed between a valve rack and the valve rod nut and an annular upper cover outside the two thrust bearings. Space, where the thrust bearings lie is entirely isolated from atmosphere via the O-shaped rings, so the thrust bearings can be used for a long term and great lubrication capability of the whole valve can be remained during the use.
Description
Technical field
The utility model relates to a kind of valve mechanism, is specifically related to the lubrication protection structure at a kind of smaller diameter valve Stem Mut position.
Background technique
The valve of small-bore rise-fall type valve rod, its Stem Mut convex shoulder place, increasing producer is by adopting the comparatively cheap needle roller thrust bearing of cost to reduce surface friction drag, reducing operation moment of torsion, and the like product of especially external producer, adopts this structure more at large.Because valve belongs to smaller diameter valve, operation moment of torsion is also relatively little, and in order to simplify the requirement that valve operation is safeguarded, Stem Mut place does not generally arrange the lubricating cup of charging-up lubricant oil.
Above-mentioned Stem Mut position, in when assembling, adopts two kinds of modes conventionally: the one, bearing is soaked in lubricant oil to assembling afterwards, and the 2nd, assemble be again coated with lubricating grease on bearing after.These two kinds of modes can make bearing within the regular hour, keep good lubricated and antirust ability, but valve is after installing and using the long period, because the position, space at bearing place aspect structural design always exists some and the extraneous gap communicating, lubricating grease or lubricant oil can volatilize dry and hardly because of solvent completely, or oxidizedly weaken or lose lubricating ability because contacting with Atmospheric Long-term; In addition, when lubricant oil lost efficacy when comparatively serious, can there is corrosion compared with weak due to its material antirust ability in bearing, can greatly increase the operation moment of torsion of valve.
Summary of the invention
In order to overcome the existing above-mentioned some shortcomings part of existing structure, the utility model provides a kind of thrust-bearing place that can make Stem Mut can maintain comparatively enduringly the lubrication protection structure at the smaller diameter valve Stem Mut position of good lubricating status.
To achieve these goals, the utility model is by the following technical solutions:
The lubrication protection structure at a kind of smaller diameter valve Stem Mut position, it comprises on cylindrical the Stem Mut with cylindrical convex shoulder, lay respectively at two thrust-bearings of described convex shoulder above and below, and a plurality of O type circles, it is characterized in that: a plurality of O type circles are set near the mounting point of Stem Mut two spaces that scribble the thrust-bearing place of lubricating grease are sealed completely, one of them O type circle is arranged on the below of downside thrust-bearing, another O type circle is arranged on the top of upside thrust-bearing, also have an O type circle to be arranged on the junction plane place of the annular upper cover in valve rack and Stem Mut and two thrust-bearing outsides.
The beneficial effects of the utility model are: because the space at two thrust-bearing places at Stem Mut position is blocked by O type circle with the extraneous all passages that communicate, this space and atmosphere are completely isolated, the lubricating grease being coated with on thrust-bearing neither can be dry and hard because of solvent evaporates, also can be because lubricating grease oxidation not weaken or lose lubricating ability, can make bearing even maintain good lubricating ability the military service of whole valve is interim in long-term use.
Accompanying drawing explanation
Accompanying drawing is the schematic diagram of the lubrication protection structure at the smaller diameter valve Stem Mut position that provides of the utility model.
Embodiment
Below in conjunction with drawings and Examples, the technical solution of the utility model is further elaborated.
If figure is the embodiment of the lubrication protection structure at smaller diameter valve Stem Mut provided by the utility model position; this embodiment's structure comprises on cylindrical Stem Mut (3) with cylindrical convex shoulder, be positioned at the needle roller thrust bearing (4) of described convex shoulder below and be positioned at the needle roller thrust bearing (5) above convex shoulder, and the mat woven of fine bamboo strips one O type circle (1), the 2nd O type circle (6) and the 3rd O type circle (2) that are arranged on diverse location.The key point of this technological scheme is: near the mounting point of Stem Mut (3), arrange that a plurality of O type circles scribble the thrust-bearing (4) of lubricating grease by two and the space at (5) place is sealed completely, wherein the mat woven of fine bamboo strips one O type circle (1) is arranged on the below of thrust-bearing (4), the 2nd O type circle (6) is arranged on the top of thrust-bearing (5), and the 3rd O type circle (2) is arranged on the junction plane place of the annular upper cover in valve rack and Stem Mut (3), thrust-bearing (4), thrust-bearing (5) outside.
According to the difference of concrete structure design, except the mat woven of fine bamboo strips one O type circle (1), the 2nd O type circle (6) and the 3rd O type circle (2) position, place, structurally may also have other the formed gap of the junction plane by correlated parts passage, therefore the quantity of O type circle may exceed above-mentioned three, but this and without prejudice to the utility model, propose technological scheme.
In the present embodiment, the passage that the space at two needle roller thrust bearings (4) and (5) place may communicate with the external world has three, by the mat woven of fine bamboo strips one O type circle (1), the 2nd O type circle (6) and the 3rd O type circle (2), blocked respectively, this space and atmosphere are completely isolated.Therefore, the lubricating grease that needle roller thrust bearing (4) and (5) are coated with while above assembling neither can be dry and hard because of solvent evaporates, can not weaken or lose lubricating ability because of lubricating grease oxidation yet, can make bearing even maintain good lubricating ability the military service of whole valve is interim in long-term use, thereby the usability of improving product, the workload of minimizing product maintenance and maintenance.
Below by reference to the accompanying drawings embodiment of the present utility model is described, but these explanations can not be understood to limit scope of the present utility model.Those skilled in the art should know; the utility model is not restricted to the described embodiments; its protection domain is defined by appending claims; any formed technological scheme of various changes, modification within not exceeding the scope that the utility model claims define; all do not depart from spirit of the present utility model and technical spirit, within still can belonging to claim scope of the present utility model.
Claims (1)
1. the lubrication protection structure at a smaller diameter valve Stem Mut position, it comprises on cylindrical the Stem Mut (3) with cylindrical convex shoulder, be positioned at the thrust-bearing (4) of described convex shoulder below and be positioned at the thrust-bearing (5) above convex shoulder, an and O type circle (1), the 2nd O type circle (6) and the 3rd O type circle (2), it is characterized in that: near the mounting point of Stem Mut (3), arrange that a plurality of O type circles scribble the thrust-bearing (4) of lubricating grease by two and the space at (5) place is sealed completely, wherein an O type circle (1) is arranged on the below of thrust-bearing (4), the 2nd O type circle (6) is arranged on the top of thrust-bearing (5), the 3rd O type circle (2) is arranged on valve rack and Stem Mut (3), thrust-bearing (4), the junction plane place of the annular upper cover in thrust-bearing (5) outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420044617.9U CN203880210U (en) | 2014-01-23 | 2014-01-23 | Lubrication protection structure for valve rod nut part of small-aperture valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420044617.9U CN203880210U (en) | 2014-01-23 | 2014-01-23 | Lubrication protection structure for valve rod nut part of small-aperture valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203880210U true CN203880210U (en) | 2014-10-15 |
Family
ID=51680705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420044617.9U Expired - Fee Related CN203880210U (en) | 2014-01-23 | 2014-01-23 | Lubrication protection structure for valve rod nut part of small-aperture valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203880210U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439187A (en) * | 2016-12-05 | 2017-02-22 | 常熟市虞菱机械有限责任公司 | Multi-rotation driving device for valve |
| CN106641414A (en) * | 2016-12-05 | 2017-05-10 | 常熟市虞菱机械有限责任公司 | Valve driving device capable of being arranged on electric executing mechanism |
-
2014
- 2014-01-23 CN CN201420044617.9U patent/CN203880210U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439187A (en) * | 2016-12-05 | 2017-02-22 | 常熟市虞菱机械有限责任公司 | Multi-rotation driving device for valve |
| CN106641414A (en) * | 2016-12-05 | 2017-05-10 | 常熟市虞菱机械有限责任公司 | Valve driving device capable of being arranged on electric executing mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141015 Termination date: 20180123 |