CN103423311A - Sealing bearing - Google Patents
Sealing bearing Download PDFInfo
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- CN103423311A CN103423311A CN2013103191896A CN201310319189A CN103423311A CN 103423311 A CN103423311 A CN 103423311A CN 2013103191896 A CN2013103191896 A CN 2013103191896A CN 201310319189 A CN201310319189 A CN 201310319189A CN 103423311 A CN103423311 A CN 103423311A
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- oil seal
- bearing
- oil
- sealing
- seal lip
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Abstract
The invention discloses a sealing bearing. A bearing is mounted on a rotating shaft, an oil seal is mounted in a cavity formed by the rotating shaft, the bearing and a bearing support, the outer ring of the oil seal is clung to the inner wall of the bearing support, and the rotating shaft is sleeved with the inner ring of the oil seal, so that sealing is formed among the bearing support, the oil seal and the rotating shaft; the oil seal comprises an oil seal main body, two oil seal lips and springs, the oil seal lips are respectively a left oil seal lip and a right oil seal lip and located on the left side and the right side of the oil seal main body, and the springs are respectively arranged on the left oil seal lip and the right oil seal lip. As the oil seal is provided with the two oil seal lips, and the self-tightening springs are arranged on the oil seal lips, no matter whether the internal pressure or the external pressure of the oil seal is high, one of the oil seal lips can be forced to clasp the rotating shaft; moreover, under the regulating action of the self-tightening springs, the oil seal can actively compensate abrasion caused by relative motion of the oil seal lips and the shaft to achieve reliable sealing, so that the service lives of the oil seal and the bearing are prolonged to a great extent.
Description
Technical field
The present invention relates to mechanical design field, particularly a kind of for stuffing box bearing.
Background technique
Be arranged on the bearing on running shaft, rotary shaft lip seal-Nei Bao matrix type leather cup oil sealing is generally selected in its sealing, and main material is all kinds of rubber, and has the steel skeleton.Under free state, its internal diameter is less than the diameter of axle, and certain magnitude of interference is arranged.After loading onto, the contractile force of the pressure of its lip and self-tightening spring produces certain enclasping force to seal shaft, and gap is revealed in blocking, reaches the purpose of sealing.This oil sealing relies on resiliently deformable to reach sealing effect, in the course of the work due to the bearing portion temperature and pressure all in continuous variation, the resiliently deformable that the oil seal lip position produces also can be inconsistent.Be out of shape large position good sealing effect, be out of shape little position sealing effect weaker.When axle rotates, the heat that bearing rotary produces makes the pressure rises of bearing bore, and higher than extraneous pressure, at this moment lip is held rotatingshaft tightly under air pressure and the double-deck effect of spring, lubricant oil in bearing bore can not leak, and extraneous dust is along with the effect of air-flow can not enter bearing bore yet simultaneously.But in stopping process; air pressure in bearing bore diminishes along with the decline of temperature; extraneous air pressure can be greater than the air pressure in bearing bore; dust in delivery chute can unclamp along with air-flow forces a weaker place of oil seal lip; enter bearing bore; in the course of time, the impurity in bearing bore can increase the frictional force of bearing, until bearing is scrapped.Simultaneously, on the surface of contact of oil sealing and axle, owing to not blocking, the dust be full of between oil sealing and axle also can be accelerated the wearing and tearing of oil sealing and axle.
Summary of the invention
The objective of the invention is to overcome the deficiency of existing structure, provide a kind of simple in structure, can effectively solve because the oil sealing inner and outer air pressure changes and cause the bad stuffing box bearing of bearing seal effect.
For solving the problems of the technologies described above, the present invention has adopted a kind of stuffing box bearing, comprise oil sealing, bearing support, bearing, bearing is arranged on running shaft, oil sealing is arranged in the cavity of running shaft, bearing and bearing support formation, the outer ring of oil sealing is close on the inwall of bearing support, and the inner ring of oil sealing is enclosed within on running shaft, thereby forms sealing between bearing support, oil sealing and running shaft; Described oil sealing comprises oil sealing main body, oil seal lip and spring, and described oil seal lip has two, is respectively left oil seal lip and right oil seal lip, lays respectively at the left and right sides of oil sealing main body, on described left oil seal lip and right oil seal lip, is respectively arranged with spring.
As a further improvement on the present invention, described spring is the self-tightening spring.
The beneficial effect that the present invention has: with two oil seal lips, and all be provided with the self-tightening spring due to the oil sealing of sealing bearing on two oil seal lips, so no matter the pressure on inside and outside which limit of oil sealing is large, can force oil seal lip on one side to hold running shaft tightly; And, under the regulating action of self-tightening spring, oil sealing energy Active Compensation, due to the wearing and tearing of oil seal lip and axle relative movement generation, reaches reliable sealing, thereby has improved to a great extent the working life of oil sealing self and bearing.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of oil sealing.
In figure: 1, running shaft; 2, oil sealing; 3, bearing support; 4, bearing; 21, oil sealing main body; 22, left oil seal lip; 23, right oil seal lip; 24, spring.
Embodiment
Now by reference to the accompanying drawings the present invention is described further.
As shown in Figure 1, bearing 4 is arranged on running shaft 1, oil sealing 2 is arranged in the cavity of running shaft 1, bearing 4 and bearing support 3 formation, the outer ring of oil sealing 2 is close on the inwall of bearing support 3, the inner ring of oil sealing 2 is enclosed within on running shaft 1, thereby form sealing between bearing support 3, oil sealing 2 and running shaft 1, so both can effectively prevent the leakage of bearing oil, can prevent entering of extraneous dust again.
Be illustrated in figure 2 oil sealing 2, comprise oil sealing main body 21, oil seal lip and spring 24, described oil seal lip has two, is respectively left oil seal lip 22 and right oil seal lip 23, lay respectively at the left and right sides of oil sealing main body 21, on described left oil seal lip 22 and right oil seal lip 23, be respectively arranged with spring 24; Its medi-spring 24 can adopt the self-tightening spring.
Like this, no matter the pressure on oil sealing 2 inside and outside which limit is large, can force oil seal lip on one side to hold running shaft 1 tightly; And, under the regulating action of self-tightening spring, oil sealing energy Active Compensation, due to the wearing and tearing that 1 relative movement of oil seal lip and running shaft produces, reaches reliable sealing, thus the working life of having improved to a great extent oil sealing 2 self and bearing 4.
Claims (2)
1. a stuffing box bearing, comprise oil sealing (2), bearing support (3), bearing (4), bearing (4) is arranged on running shaft (1), oil sealing (2) is arranged in the cavity of running shaft (1), bearing (4) and bearing support (3) formation, the outer ring of oil sealing (2) is close on the inwall of bearing support (3), it is upper that the inner ring of oil sealing (2) is enclosed within running shaft (1), thereby form sealing between bearing support (3), oil sealing (2) and running shaft (1); Described oil sealing (2) comprises oil sealing main body (21), oil seal lip and spring (24), described oil seal lip has two, be respectively left oil seal lip (22) and right oil seal lip (23), lay respectively at the left and right sides of oil sealing main body (21), on described left oil seal lip (22) and right oil seal lip (23), be respectively arranged with spring (24).
2. oil sealing as claimed in claim 1, it is characterized in that: described spring (24) is the self-tightening spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103191896A CN103423311A (en) | 2013-07-28 | 2013-07-28 | Sealing bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103191896A CN103423311A (en) | 2013-07-28 | 2013-07-28 | Sealing bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103423311A true CN103423311A (en) | 2013-12-04 |
Family
ID=49648517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013103191896A Pending CN103423311A (en) | 2013-07-28 | 2013-07-28 | Sealing bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103423311A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107388009A (en) * | 2017-07-20 | 2017-11-24 | 湖南科力尔电机股份有限公司 | A kind of automatic and accurate grease filling machine |
| CN107956858A (en) * | 2017-12-05 | 2018-04-24 | 浙江锦禾农业科技有限公司 | The oil seal mechanism of rice transplanter implanting mechanism drive shaft |
-
2013
- 2013-07-28 CN CN2013103191896A patent/CN103423311A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107388009A (en) * | 2017-07-20 | 2017-11-24 | 湖南科力尔电机股份有限公司 | A kind of automatic and accurate grease filling machine |
| CN107388009B (en) * | 2017-07-20 | 2023-10-31 | 科力尔电机集团股份有限公司 | Automatic accurate grease injecting machine |
| CN107956858A (en) * | 2017-12-05 | 2018-04-24 | 浙江锦禾农业科技有限公司 | The oil seal mechanism of rice transplanter implanting mechanism drive shaft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131204 |