CN204755916U - Exoskeletal rubber oil seal of lips mouth J type - Google Patents
Exoskeletal rubber oil seal of lips mouth J type Download PDFInfo
- Publication number
- CN204755916U CN204755916U CN201520450869.6U CN201520450869U CN204755916U CN 204755916 U CN204755916 U CN 204755916U CN 201520450869 U CN201520450869 U CN 201520450869U CN 204755916 U CN204755916 U CN 204755916U
- Authority
- CN
- China
- Prior art keywords
- rubber oil
- lip
- shave
- oil seal
- 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.)
- Expired - Fee Related
Links
Landscapes
- Sealing With Elastic Sealing Lips (AREA)
Abstract
The utility model discloses an exoskeletal rubber oil seal of lips mouth J type belongs to rubber seal technical field. The utility model provides an exoskeletal rubber oil seal of J type includes rubber oil seal body and self -tightening spring, wherein, the rubber oil seal body be doughnut -shaped structure the each side of interior anchor ring of rubber oil seal body be equipped with a sealing edge, be equipped with a spring groove respectively on the rubber oil seal body corresponding with two sealing edge, be provided with the self -tightening spring at above -mentioned spring inslot, just two sealing edge include all that circumscribed shaving shave with the inscribe, wherein, circumscribed shave and the rotation axis axis between the contained angle be less than 90, should be circumscribed shave and spring groove terminal surface between orthogonal, and the connection of two sealing edge's inscribe between shaving is the rounding off. The utility model discloses in owing to use two lips as sealed face simultaneously, improved the sealed effect of oil blanket greatly, prolonged its life.
Description
Technical field
The utility model belongs to rubber seal field, more particularly, relates to the exoskeletal rubber oil sea of a kind of double-lip J type.
Background technique
Oil sealing is a kind of accurate rubber part of high technology content, and it is the leakage being prevented lubricant oil or other media by the contact of the Sealing such as flexible rubber, plastics and axle.Wherein, according to or without metal frame, rubber oil sea can be divided into outside framework oil seal and oil seal without framework, and, operating mode comparatively large in the size of some axles uses outside framework oil seal then to have the shortcoming of installing inconvenience severe, now the exoskeletal rubber oil sea of many uses seals.
The sealing mechanism of many experts and scholars to oil sealing is studied, and proposes surface tension theory, adsorption theory, and what also have proposes boundary lubrication theory.And no matter be which kind of is theoretical, its basis of setting up is all between axle and oil seal lip, there is oil film, and the existence of oil film directly affects the effect of sealing and the working life of oil sealing.The sealing of rubber oil sea realizes by the interference fit between rubber lip and running shaft, and coordinate the existence also affecting oil film between axle and oil seal lip between rubber lip with running shaft, therefore, its coaxality to running shaft, size deviation, out of roundness, surface roughness etc. have very strict requirement.Such as: rotating shaft surface is too smooth, be unfavorable for being formed and keeping oil film, seal ring dry friction is easily burnt, and causes leakage; Rotating shaft surface is too coarse, and fretting wear aggravates, and can cause oil sealing early failue equally.But owing to being subject to the restriction of process conditions, the machining accuracy of running shaft is difficult to reach perfect condition, therefore mainly through improving the structure of oil sealing self to ensure its sealing effect.
J type oil sealing is mainly used in the drive part in steel mill's rolling mill roll and neutral machinery, increases the radial force of sealing lip to running shaft by extension spring, is applied to the place that sealing medium can provide sufficient lubrication.At present, the general exoskeletal rubber oil sea of J type (its erection drawing as shown in Figure 1) is according to HG4-338-66 standard design, rubber oil sea is arranged in the assembly space between sealed type body 7 and running shaft 8, make to realize closely cooperating between seal lip 4 and running shaft 8 by the self-tightening spring 2 be arranged in spring groove 3, thus realize sealing effect, but the standard of this kind of oil sealing came into effect in 1966, so far do not revise or correcting, poor by the Sealing Performance of Oil Seal of this standard production, working life is shorter.Therefore, needing the structure by improving the exoskeletal rubber oil sea of J type to improve its sealing effect, extending the working life of oil sealing.
Through retrieval, the patent application about the sealing effect improving rubber oil sea is existing relevant open.
As: Chinese Patent Application No.: 201220134906.9, the applying date: on 04 01st, 2012, model utility name was called: axle two-lip seal, this application case discloses a kind of axle two-lip seal, it arranges outer lip and inner lip respectively in the left and right sides of arch-shaped rubber body inwall, thus improve the sealing effect of oil sealing, the problem of the poor sealings such as leakage of oil is there is in this application case when can prevent running shaft from vibrating larger to a certain extent, but because this application case medi-spring groove end face is horizontal plane, and lip circumscribed is had a shave and to be connected with spring groove end face by a vertical plane, on the one hand, this structure is unfavorable for installation and the replacing of self-tightening spring, on the other hand, self-tightening spring only has vertical pressure to lip, when oil sealing service time is longer, the fit sealing effect of self-tightening spring to lip and running shaft easily declines, thus there is the phenomenon of leakage of oil.Chinese Patent Application No.: 201020182823.8, the applying date: on 05 07th, 2010, model utility name is called: soft double-lip sealing ring, this application case provides a kind of soft double-lip sealing ring, its seal lip adopts double seal lips structure, and adopt sulfuration embedded structure at the spring of side medium seal lip, opposite side seal lip hangs spring structure after then adopting sulfidization molding, thus solve the problem that common skeleton-type oil seal cannot carry out installing assembling, improve the sealing effect of oil sealing to a certain extent, but due to both sides lip and self-tightening spring structure asymmetric, make two contact tightness degree between lip and running shaft different, easily there is deflection in oil sealing, thus its sealing effect is reduced greatly.
Model utility content
1. the model utility technical problem that will solve
It is poor that the purpose of this utility model is to overcome existing J type exoskeletal rubber oil sea sealing, and the deficiency that working life is shorter, provides the exoskeletal rubber oil sea of a kind of double-lip J type.By using the exoskeletal rubber oil sea of J type in the utility model, when a seal lip lost efficacy, another seal lip still can be used to seal, thus improve the sealing effect of the exoskeletal rubber oil sea of J type, extending its working life.
2. technological scheme
For achieving the above object, the technological scheme that the utility model provides is:
The exoskeletal rubber oil sea of a kind of double-lip J type of the present utility model, comprise rubber oil sea body and self-tightening spring, wherein, described rubber oil sea body is cirque structure, described rubber oil sea body inner ring surface be each side provided with a seal lip, the rubber oil sea body corresponding with two seal lip is respectively equipped with a spring groove, self-tightening spring is provided with in above-mentioned spring groove, and described two seal lip includes circumscribed to have a shave and inscribe is had a shave, wherein, described circumscribedly to have a shave and angle between rotating shaft axis is less than 90 °, this is circumscribed has a shave and orthogonal between spring groove end face, and the inscribe of two seal lips have a shave between connection be rounding off.
Further, the longitudinal compression amount of described rubber oil sea body is 1 ~ 3mm.
Further, the size of two described seal lips is identical, and symmetrical about the center line of rubber oil sea.
Further, the inscribe of described seal lip is had a shave and angle between rotating shaft axis is 30-45 °.
3. beneficial effect
The technological scheme adopting the utility model to provide, compared with prior art, has following beneficial effect:
(1) the exoskeletal rubber oil sea of a kind of double-lip J type of the present utility model, devise two seal lips to use as sealing surface simultaneously, identical and the full symmetric of size due to two seal lips, can prevent oil sealing in use due to running shaft vibration etc. and there is skewness, thus the soundness of assembling between seal lip and running shaft can be ensured, increase the sealing effect of oil sealing; And when one of them lip lost efficacy, another lip can also continue sealing, thus can alleviate the leakage of sealing medium, substantially increases the sealing effect of oil sealing, extends the working life of oil sealing.
(2) the exoskeletal rubber oil sea of a kind of double-lip J type of the present utility model, its seal lip circumscribed is had a shave and angle between horizontal plane is less than 90 °, and above-mentioned circumscribed having a shave directly to be connected with spring groove end face and orthogonal, the installation of self-tightening spring can be facilitated on the one hand, self-tightening spring is to the circumscribed pressure effect existed along its circumscribed normal direction of having a shave of having a shave of seal lip on the other hand, thus it is more tight that the knot between seal lip and running shaft can be made to touch, thus further enhancing the sealing effect of oil sealing.
(3) the exoskeletal rubber oil sea of a kind of double-lip J type of the present utility model, reasonable in design, principle is simple, and cost is lower, is convenient to promote the use of.
Accompanying drawing explanation
Fig. 1 is the assembling schematic diagram of traditional exoskeletal rubber oil sea of J type;
Fig. 2 is half cut-away view of the exoskeletal rubber oil sea of a kind of double-lip J type of the present utility model;
Fig. 3 is the assembling schematic diagram of the exoskeletal rubber oil sea of a kind of double-lip J type of the present utility model;
Label declaration in schematic diagram:
1, rubber oil sea body; 2, self-tightening spring; 3, spring groove; 4, seal lip; 5, circumscribedly to have a shave; 6, inscribe is had a shave; 7, sealed type body; 8, running shaft.
Embodiment
For understanding content of the present utility model further, now in conjunction with the accompanying drawings and embodiments the utility model is described in detail.
Embodiment 1
As shown in Figure 2, the exoskeletal rubber oil sea of a kind of double-lip J type of the present embodiment, comprise rubber oil sea body 1 and self-tightening spring 2, wherein, above-mentioned rubber oil sea body 1 is cirque structure, and it has compressibility, and its longitudinal compression amount is 1 ~ 3mm, therefore, this rubber oil sea is easily installed in the assembly space between sealed type body 7 and running shaft 8, and the major diameter fit face of rubber oil sea body 1 and sealed type body 7 interference fit.Rubber oil sea body 1 inner ring surface be each side provided with a seal lip 4, the size of these two seal lips 4 is identical, and it is symmetrical about the center line of rubber oil sea, the seal action of oil sealing greatly can be strengthened by the cooperation of above two seal lips 4, when one of them seal lip 4 lost efficacy, another seal lip 4 still has seal action, thus oil sealing sealing effect is poor when preventing from adopting single lip mouth oil seal, the deficiency that working life is shorter, two seal lip 4 sizes are identical and be symmetrical arranged, thus the assembling between oil sealing and running shaft 8 can be made more firm, realize self-align effect, prevent oil sealing in use due to running shaft 8 vibration etc. and there is skewness, thus affect sealing effect.Be linear contact lay between this two seal lips 4 and running shaft 8, make the contact between oil sealing and running shaft 8 contact (as Fig. 1) by face-face and change line-linear contact lay (as Fig. 3) into, thus reduce seal lip 4 and the area of contact of running shaft 8, reduce the frictional heat of lip 4 and running shaft 8.On the rubber oil sea body 1 corresponding with above-mentioned two seal lips 4, a spring groove 3 is respectively provided with in the present embodiment, self-tightening spring 2 is provided with in above-mentioned spring groove 3, and above-mentioned two seal lips 4 include circumscribed have a shave 5 and inscribe have a shave 6, wherein, it is circumscribed has a shave and 5 is less than 90 ° with the angle of running shaft 8 axis, and circumscribed having a shave 5 to be directly connected with spring groove 3 end face and orthogonal, on the one hand can so that the installation of self-tightening spring 2, the circumscribed pressure effect of 5 existence along its circumscribed 5 normal direction of having a shave of having a shave of self-tightening spring 2 pairs of seal lips 4 on the other hand, thus it is tightr that the knot between seal lip 4 and running shaft 8 can be made to touch, thus enhance the sealing effect of oil sealing, because lip 4 weares and teares the poorly sealed phenomenon caused when preventing oil sealing Long-Time Service.In addition, the inscribe of two seal lips 4 is had a shave and 6 is less than 90 ° with corresponding circumscribed angle of having a shave between 5, and the angle between running shaft 8 axis is 45 °, thus the sealing effect of oil sealing can be ensured further, and contribute to the oil film state improved between seal lip 4 and running shaft 8, prevent the generation of dry friction and poorly sealed phenomenon, the connection that in the present embodiment, the inscribe of two seal lips 4 is had a shave between 6 is rounding off, thus the overall distribution of force in assembling using process of oil sealing can be improved, extend the working life of oil sealing.
Therefore, by using the exoskeletal rubber oil sea of double-lip J type in the utility model, greatly can strengthen the sealing effect of oil sealing, making to extend 1.5-2.5 the working life of oil sealing doubly.
Schematically above be described the utility model and mode of execution thereof, this description does not have restricted, and also just one of the mode of execution of the present utility model shown in accompanying drawing, actual structure is not limited thereto.So, if those of ordinary skill in the art enlightens by it, when not departing from the utility model and creating aim, design the mode of structure similar to this technological scheme and embodiment without creationary, protection domain of the present utility model all should be belonged to.
Claims (4)
1. the exoskeletal rubber oil sea of double-lip J type, comprise rubber oil sea body (1), it is characterized in that: also comprise self-tightening spring (2), wherein, described rubber oil sea body (1) is cirque structure, described rubber oil sea body (1) inner ring surface be each side provided with a seal lip (4), the rubber oil sea body (1) corresponding with two seal lips (4) is respectively equipped with a spring groove (3), self-tightening spring (2) is provided with in above-mentioned spring groove (3), and described two seal lips (4) include circumscribed to have a shave (5) and inscribe has a shave (6), wherein, described circumscribedly to have a shave (5) and angle between running shaft (8) axis is less than 90 °, this is circumscribed has a shave (5) and orthogonal between spring groove (3) end face, and the connection that the inscribe of two seal lips (4) is had a shave between (6) is rounding off.
2. according to the exoskeletal rubber oil sea of a kind of double-lip J type described in claim 1, it is characterized in that, the longitudinal compression amount of described rubber oil sea body (1) is 1 ~ 3mm.
3. the exoskeletal rubber oil sea of a kind of double-lip J type according to claim 2, is characterized in that, the size of two described seal lips (4) is identical, and symmetrical about the center line of rubber oil sea.
4. the exoskeletal rubber oil sea of a kind of double-lip J type according to claim 3, is characterized in that, the inscribe of described seal lip (4) is had a shave (6) and angle between running shaft (8) axis is 30-45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520450869.6U CN204755916U (en) | 2015-06-26 | 2015-06-26 | Exoskeletal rubber oil seal of lips mouth J type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520450869.6U CN204755916U (en) | 2015-06-26 | 2015-06-26 | Exoskeletal rubber oil seal of lips mouth J type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204755916U true CN204755916U (en) | 2015-11-11 |
Family
ID=54470624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520450869.6U Expired - Fee Related CN204755916U (en) | 2015-06-26 | 2015-06-26 | Exoskeletal rubber oil seal of lips mouth J type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204755916U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869554A (en) * | 2018-08-31 | 2018-11-23 | 无锡三立轴承股份有限公司 | Bearing seal |
| CN111197656A (en) * | 2020-03-06 | 2020-05-26 | 北京化工大学 | J-shaped sealing ring and quick opening structure using same |
-
2015
- 2015-06-26 CN CN201520450869.6U patent/CN204755916U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869554A (en) * | 2018-08-31 | 2018-11-23 | 无锡三立轴承股份有限公司 | Bearing seal |
| CN111197656A (en) * | 2020-03-06 | 2020-05-26 | 北京化工大学 | J-shaped sealing ring and quick opening structure using same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103244686B (en) | A kind of low friction damper oil sealing | |
| CN204201078U (en) | A kind of y-type seal ring | |
| CN202733009U (en) | Flange two-way pressure hard sealing butterfly valve | |
| CN204755916U (en) | Exoskeletal rubber oil seal of lips mouth J type | |
| CN204114112U (en) | Y-type seal ring | |
| CN206145132U (en) | Multiple sealed Y type sealing washer | |
| CN206668991U (en) | A kind of soft seat butterfly valve of novel sealing structure | |
| CN203703138U (en) | Mechanical sealing device | |
| CN209483819U (en) | Bearing sealed ring | |
| CN203641283U (en) | Bearing sealing ring | |
| CN103629363A (en) | Composite two-lip threaded lip oil seal | |
| CN209557484U (en) | A kind of long-life universal joint bearing | |
| CN203571053U (en) | Composite dual-lip threaded lip oil seal | |
| CN205044842U (en) | Thrust wheel with thermal diffusivity and leakproofness are good | |
| CN206072131U (en) | New deep groove ball bearing contact type sealing structure | |
| CN203322297U (en) | Elastic self-sealing butterfly valve | |
| CN201502710U (en) | Springless oil seal | |
| CN209469727U (en) | High-mechanic long-life Hooke's joint | |
| CN203322272U (en) | Low-friction shock absorber oil seal | |
| CN201628012U (en) | Metal valve upper sealing structure | |
| CN202579702U (en) | Universal joint capable of compensating wear of sealing device | |
| CN201265548Y (en) | Water pump sealing device | |
| CN206290478U (en) | Water pump wear-resistant seal circle | |
| CN204878740U (en) | Full polytetrafluoroethylene oil blanket of self sealss that can monitor | |
| CN205823962U (en) | The bearing of part sealing structure in a kind of band |
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 |
Granted publication date: 20151111 Termination date: 20210626 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |