CN87210739U - Floating oil seal - Google Patents
Floating oil seal Download PDFInfo
- Publication number
- CN87210739U CN87210739U CN198787210739U CN87210739U CN87210739U CN 87210739 U CN87210739 U CN 87210739U CN 198787210739 U CN198787210739 U CN 198787210739U CN 87210739 U CN87210739 U CN 87210739U CN 87210739 U CN87210739 U CN 87210739U
- Authority
- CN
- China
- Prior art keywords
- cutting edge
- rotating shaft
- sealing
- high speed
- seal
- 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.)
- Withdrawn
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Abstract
The utility model relates to a floating oil seal which is the sealing component used for high speed rotating shafts. The inner edge and the outer edge of the ring-shaped body which is made of macromolecular materials and is provided with metal reinforcing components are provided with sealing cutting edges which are in definite geometric shape. The groove of the back of each sealing component is respectively provided with extension and compression springs. The utility model which can seal the high speed rotating shaft effectively has the advantages of simple structure and easy fabrication.
Description
The utility model relates to the seal element of a kind of seal element of rotating shaft, particularly high speed rotating shaft.
Existing oil sealing generally is the sealing cutting edge that is provided with certain geometrical shape on the inner edge of ring bodies, and the groove at its back side is equipped with extension spring, and outer rim is that the cylndrical surface closely is assemblied in the oil sealing base hole of housing, and oil sealing is static during the rotating shaft rotation.The linear velocity of bearing along with the reach of science oil sealing is more and more higher, for solving sealing and the life problems under the rotating shaft high speed rotating, people find out thousand and one way, but generally be the improvement to oil sealing material (prescription) and inner edge, it is undesirable only to rely on these to improve the effect and the life-span of improving sealing at a high speed.
The purpose of this utility model is to provide a kind of element improved, that can effectively seal and increase working life to high speed rotating shaft that carries out on outer shroud.
Float grease seal is the seal element of rotating shaft, seal element especially for high speed rotating shaft, it has on the ring bodies of metal reinforcement in making with macromolecular material, inner edge is provided with radially outstanding sealing cutting edge, in the groove at the inner edge back side, be provided with extension spring, it is characterized in that: the outer rim of ring bodies is provided with the outstanding sealing cutting edge of radially outward, is provided with pressure spring in the groove at the outer rim back side.
The utility model is based on original oil sealing, on the outer rim of ring bodies, set up one or several external sealed cutting edge, the structure of sealing cutting edge, act on similar to interior sealing cutting edge, also be to have on the flange of certain geometrical shape, the oily side angle and the outstanding flange top of air side angle composition radially outward that are oil sealing have the sealing cutting edge, its track can be that straight line also can be a sinusoidal curve, at the back side of flange groove is set pressure spring is housed, it can increase the radial force of oil sealing cutting edge to the seat hole surface, and the outer rim of ring bodies can be joined with certain stiction with the oil sealing base hole surface of housing.
When sealed axle rotates, then the outer cutting edge of oil sealing inner cutter hole and rotating shaft surface and oil sealing forms certain friction torque respectively with the seat hole surface, when the geometric parameter of the hardness of the size of adjusting cutting edge assembling magnitude of interference, spring force, ring bodies material, radial flange and axle equate two moments with a hole surface degree of finish, the interior sealing of oil sealing cutting edge and countershaft and the generation relative movement of seat hole mutually respectively of external sealed cutting edge, the sealing cutting edge rotates with the rotating speed that is lower than rotating shaft in the oil sealing.Because interior external sealed cutting edge is on the one, then the external sealed cutting edge also produces angular displacement with same rotational speed and seat hole.Said two devices angular velocity and direction are all identical.Because the rotation of seal ring body makes rotating shaft reduce the relative rotation speed of ring body, the speed that relatively rotates of sealing cutting edge is the poor of axle rotating speed and oil sealing rotating speed in rotating shaft and the oil sealing, promptly the sealing of a high speed rotating shaft is decomposed into two sealings than low speed.
The utility model is simple in structure, easy to manufacture, and comparable oil sealing that is provided with the sealing cutting edge on inner edge improves nearly one times of the rotating speed of rotating shaft under same material, can carry out sealing to high speed rotating shaft effectively or improves working life.
The utility model is described in further detail for accompanying drawing below utilizing.
Fig. 1 is the utility model schematic partial cross-sectional view.
In float grease seal shown in Figure 1, an endless metal reinforcer 2 bondings are arranged within it on the ring bodies 1 of nitrile butadiene rubber, inner edge 3 is formed the flange of radially outstanding sealing cutting edge for having oily side angle and air side angle, is provided with a metal stretching spring 4 in the semicircular annular ditch groove in its back side.The outer rim 6 and the inner edge structural similarity of ring bodies are formed the flange of the outstanding sealing cutting edge of radially outward for having oily side angle and air side angle, and a metal pressure spring 5 is housed in the semicircular annular ditch groove in its back side.
Claims (1)
- Float grease seal is the seal element of rotating shaft, seal element especially for high speed rotating shaft, it has in making with macromolecular material on the ring bodies 1 of metal reinforcement 2, inner edge 3 is provided with radially outstanding sealing cutting edge, in the groove at the inner edge back side, be provided with extension spring 4, it is characterized in that: the outer rim 6 of ring bodies is provided with the outstanding sealing cutting edge of radially outward, is provided with pressure spring 5 in the groove at the outer rim back side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN198787210739U CN87210739U (en) | 1987-11-10 | 1987-11-10 | Floating oil seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN198787210739U CN87210739U (en) | 1987-11-10 | 1987-11-10 | Floating oil seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87210739U true CN87210739U (en) | 1988-05-25 |
Family
ID=4825644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN198787210739U Withdrawn CN87210739U (en) | 1987-11-10 | 1987-11-10 | Floating oil seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87210739U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1086222C (en) * | 1994-05-24 | 2002-06-12 | 杜长春 | Static balance combined high pressure rotary shaft oil seal |
| WO2005075858A1 (en) * | 2004-01-20 | 2005-08-18 | Hongzhuan Zheng | Sealing equipment |
| CN110118260A (en) * | 2019-05-14 | 2019-08-13 | 太原科技大学 | Floating envelope stress relaxation oil leak life-span prediction method and long-term seal float seal apparatus |
-
1987
- 1987-11-10 CN CN198787210739U patent/CN87210739U/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1086222C (en) * | 1994-05-24 | 2002-06-12 | 杜长春 | Static balance combined high pressure rotary shaft oil seal |
| WO2005075858A1 (en) * | 2004-01-20 | 2005-08-18 | Hongzhuan Zheng | Sealing equipment |
| CN110118260A (en) * | 2019-05-14 | 2019-08-13 | 太原科技大学 | Floating envelope stress relaxation oil leak life-span prediction method and long-term seal float seal apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |