CN202117728U - Valve oil seal - Google Patents
Valve oil seal Download PDFInfo
- Publication number
- CN202117728U CN202117728U CN2011201100831U CN201120110083U CN202117728U CN 202117728 U CN202117728 U CN 202117728U CN 2011201100831 U CN2011201100831 U CN 2011201100831U CN 201120110083 U CN201120110083 U CN 201120110083U CN 202117728 U CN202117728 U CN 202117728U
- Authority
- CN
- China
- Prior art keywords
- oil seal
- groove
- seal body
- valve oil
- fluorosioloxane rubber
- 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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- Sealing With Elastic Sealing Lips (AREA)
- Sealing Devices (AREA)
Abstract
The utility model discloses a valve oil seal comprising an oil seal body. The utility model is characterized in that a layer of polytetrafluoroethylene is covered on the surface of an lip part of the oil seal body; the oil seal body comprises an external metal sleeve and an internal fluorosilicone rubber inner liner; a groove is disposed on the upper side of the fluorosilicone rubber inner liner; the top end of the metal sleeve is bended inwardly and is cooperated with the groove in an inserted manner. The valve oil seal has advantages of simple structure, good sealing performance, abilities of improving heatproof performance and prolonging the service lifetime.
Description
Technical field
The utility model relates to the valve oil seal technical field.
Background technique
At present, valve oil seal is used for the engine breathing mouth, because the Environmental Conditions temperature is high, so working life is short.Like one Chinese patent application number is 200420033176.9; The model utility name is called the new series valve oil seal; Be made up of skeleton, nylon Locking bushing and working head, skeleton is to be enclosed by rousing of cylindrical shape and evagination to constitute, and cylindrical shape nylon Locking bushing is installed in cylinder frame; Installment work head in the bulging cast skeleton of evagination; Be uniformly distributed with ring on the cylindrical bore periphery of working head and get rid of oil groove, the bottom of nylon Locking bushing has and the corresponding circular hole of working head cylindrical bore, at the top of nylon Locking bushing horn mouth is arranged.This patent structure friction factor is extremely low, and interior outer shaft coaxality is high, friction resistant, but owing to use the fluorosioloxane rubber material to process, easy abrasion under the high-temperature work environment influences working stability.
Summary of the invention
The purpose of the utility model is exactly provide for the deficiency that solves existing technology a kind of not only simple in structure, easy for installation, and high temperature resistant, wear-resisting, the valve oil seal of long service life.
The utility model is to adopt following technical solution to realize above-mentioned purpose: a kind of valve oil seal, comprise oil seal body, and it is characterized in that the lip surface of position of said oil seal body is covered with polytetrafluoroethylene floor.
As further specifying of such scheme, said oil seal body comprises outer metal sleeve and internal layer fluorosioloxane rubber liner, and the upside of fluorosioloxane rubber liner is provided with groove, and the top of metallic sheath curves inwardly and cooperates with said groove interlocking.
The groove upside external diameter of said fluorosioloxane rubber liner is less than the metallic sheath external diameter.
The bottom margin of said internal layer fluorosioloxane rubber liner is provided with groove, and the bottom margin of outer metal sleeve is positioned at outside this groove.
The lip position of said oil seal body circumferentially is provided with the convex tendon more than three along its inwall.
The lip arranged outside of said oil seal body has annular groove.
The beneficial effect that the utility model adopts above-mentioned technical solution to reach is:
The utility model is covered with PTFE (teflon) layer on the fluorosioloxane rubber surface, lip position of oil seal body, effectively improve heatproof and working life, and is simple in structure, good seal performance.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the sectional structure schematic representation of Fig. 1.
Description of reference numerals: 1, oil seal body 1-1, metallic sheath 1-2, fluorosioloxane rubber liner 1-21, groove 2, polytetrafluoroethylene floor 3, annular groove 4, convex tendon
Embodiment
Like Fig. 1, shown in Figure 2, a kind of valve oil seal of the utility model comprises oil seal body 1, and the lip surface of position of oil seal body 1 is covered with polytetrafluoroethylene floor 2, and the lip arranged outside of oil seal body 1 has annular groove 3.Wherein, oil seal body 1 comprises outer metal sleeve 1-1 and internal layer fluorosioloxane rubber liner 1-2, and the upside of fluorosioloxane rubber liner is provided with groove 1-21, and the top of metallic sheath curves inwardly and cooperates with said groove interlocking.The groove upside external diameter of fluorosioloxane rubber liner is less than the metallic sheath external diameter.Lip position at oil seal body circumferentially is provided with the convex tendon 4 more than three along its inwall; Present embodiment adopts four settings convex tendon at grade; The bottom margin of internal layer fluorosioloxane rubber liner is provided with groove, and the bottom margin of outer metal sleeve is positioned at outside this groove.
Above-described only is the preferred implementation of the utility model; Should be pointed out that for the person of ordinary skill of the art, under the prerequisite that does not break away from the utility model creation design; Can also make some distortion and improvement, these all belong to the protection domain of the utility model.
Claims (6)
1. a valve oil seal comprises oil seal body, it is characterized in that, the lip surface of position of said oil seal body is covered with polytetrafluoroethylene floor.
2. a kind of valve oil seal according to claim 1 is characterized in that, said oil seal body comprises outer metal sleeve and internal layer fluorosioloxane rubber liner, and the upside of fluorosioloxane rubber liner is provided with groove, and the top of metallic sheath curves inwardly and cooperates with said groove interlocking.
3. a kind of valve oil seal according to claim 2 is characterized in that, the groove upside external diameter of said fluorosioloxane rubber liner is less than the metallic sheath external diameter.
4. a kind of valve oil seal according to claim 2 is characterized in that, the bottom margin of said internal layer fluorosioloxane rubber liner is provided with groove, and the bottom margin of outer metal sleeve is positioned at outside this groove.
5. a kind of valve oil seal according to claim 1 is characterized in that, the lip position of said oil seal body circumferentially is provided with the convex tendon more than three along its inwall.
6. a kind of valve oil seal according to claim 1 is characterized in that, the lip arranged outside of said oil seal body has annular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201100831U CN202117728U (en) | 2011-04-13 | 2011-04-13 | Valve oil seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201100831U CN202117728U (en) | 2011-04-13 | 2011-04-13 | Valve oil seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202117728U true CN202117728U (en) | 2012-01-18 |
Family
ID=45458800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201100831U Expired - Fee Related CN202117728U (en) | 2011-04-13 | 2011-04-13 | Valve oil seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202117728U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103388501A (en) * | 2013-08-18 | 2013-11-13 | 揭阳市天诚密封件有限公司 | Turbocharging valve oil seal capable of resisting high temperature, high pressure and heavy wear |
-
2011
- 2011-04-13 CN CN2011201100831U patent/CN202117728U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103388501A (en) * | 2013-08-18 | 2013-11-13 | 揭阳市天诚密封件有限公司 | Turbocharging valve oil seal capable of resisting high temperature, high pressure and heavy wear |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120118 Termination date: 20120413 |