CN1035786C - Bidirectional jet delivery type rotary shaft oil seal - Google Patents
Bidirectional jet delivery type rotary shaft oil seal Download PDFInfo
- Publication number
- CN1035786C CN1035786C CN94105084A CN94105084A CN1035786C CN 1035786 C CN1035786 C CN 1035786C CN 94105084 A CN94105084 A CN 94105084A CN 94105084 A CN94105084 A CN 94105084A CN 1035786 C CN1035786 C CN 1035786C
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- China
- Prior art keywords
- sealing
- oil
- oil seal
- rotary shaft
- rubber
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- 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 present invention relates to a fluid motive sealing device, particularly to a bidirectional jet delivery type rotary shaft oil seal used for sealing rotary shafts, which is composed of a frame, rubber, a spring and an oil seal waist, wherein the frame is in the shape of a ladder and comprises a half exposed part and a half rubberized part, and a plurality of arc rings are molded on the outer surface of the rubberized part; an oil baffle surface of a flow guiding ring, a labial tubercle and a sealing surface are arranged on the oil seal waist in the rubber center, and a plurality of parallel ladder-shaped strips, annular strips and triangular strips are molded on the sealing surface. With the advantages of high sealing reliability, long service life and wide range of application, the oil seal of the present invention is suitable for being used as a rotary shaft seal for various machines.
Description
The present invention relates to a kind of fluid dynamic seal apparatus, refer to a kind of two-way impelling delivery type rotary shaft oil seal that is used for rotation axis seal especially.
Oil sealing belongs to fluid motive sealing class in sealing technique, motive sealing comprises mechanical seal, lip-type seal, labyrinth seal and magnet fluid sealing etc., and oil sealing belongs to lip-type seal, and lip seal divides no return wire oil sealing, unidirectional backflow oil sealing and bidirectional-reflux oil sealing again.The bidirectional-reflux oil sealing has waveform, " DP " groove, triangle convex, triangular fovea piece, half arc bump and oil sealing such as netted now, and the waveform oil sealing is to go out a sine wave in the mold pressing of sealing surface place, and the section of ripple is a rectangle; " DP " groove oil sealing is to go out arcuate furrow in the mold pressing of sealing surface place, and section is a rectangle, and the groove end is on procheilon; Oil sealings such as protruding, recessed of triangle and half arc bump are to be molded into convexo-concave block on lip.Above-mentioned bidirectional-reflux oil sealing all uses oil film and pump efficiency to answer principle, the oil that leaks out can only be through once collecting, as U.S. Pat 3,504,920 disclosed be a kind of being similar to " DP " groove oil sealing, the mold pressing of sealing surface place be triangular fin, leg-of-mutton two-end-point and lip join, and along the contact of axle sense of rotation the oil return effect are arranged, and reverse contact has the oil extraction effect, especially at the normal positive and negative alternate high speed rotating of beam warp and axle jerk value when big, sealing reliability is poor, leakage of oil easily, and their pump suction is big in addition, lip and axial plane easily form dry friction, so its working life is shorter.
Purpose of the present invention is exactly to provide the two-way impelling delivery type of a kind of sealing reliability height, long service life to rotate oil sealing.
The object of the present invention is achieved like this: two-way impelling delivery type rotary shaft oil seal is by skeleton, rubber, spring is formed, wherein the middle body of rubber is the oil sealing waist, on the oil sealing waist, offer procheilon and sealing surface, there are several sections to be protruding triangle in the mold pressing of sealing surface place, and internal diameter is the triangle strip that stepped shaft increases progressively, the band be with parallel to each other, be characterized on the oil sealing waist, also offering guide ring and shelves pasta, above-mentioned skeleton is a stepped shaft, a skeleton part exposes, remaining part is wrapped up by rubber, its encapsulate part outer surface patrix is pressed with several arc rings, above-mentioned triangle strip is annular triangle strip, the following summit of annular triangle strip and the spacing≤1mm on last summit; Angle 〉=70 of described retaining pasta and oil sealing center line °.
Advantage of the present invention is can repeatedly collect the oil that leaks out, so its sealing reliability is much higher than domestic and international existing bidirectional-reflux oil sealing, its reliability can reach 100%, and oil-sealed pump suction of the present invention is little in addition, has only 1/4th of other oil sealing, lip easily keeps suitable oil film with the axle matching part, thereby prolonged working life, simultaneously, the present invention also has advantage of wide range of application, good sealing is arranged within 0-6000rpm, be applicable to that various machines make rotation axis seal.
Fig. 1 is the structure cross-sectional schematic of the two-way impelling delivery type rotary shaft oil seal of the present invention.
Fig. 2 is the return wire shape figure of the sealing surface of the two-way impelling delivery type rotary shaft oil seal of the present invention.
Below in conjunction with accompanying drawing example of the present invention is further specified.
Referring to Fig. 1, Fig. 2.
Skeleton 1, rubber 2, spring 3, oil sealing waist 4, guide ring 5, retaining pasta 6, procheilon 7, sealing surface 8, arc ring 9, skeleton external diameter 10, annular triangle strip 11,12,13,14,15,16, down summit 17, go up summit 18, axle 19.
Two-way impelling delivery type rotary shaft oil seal is formed oil seal assembly by skeleton 1, rubber 2, spring 3.Skeleton 1 is a stepped shaft, generally be made of metal, its part exposes, remaining part is by rubber 2 parcels, outer surface patrix in the encapsulate part is pressed with several arc rings 9, the skeleton external diameter 10 that exposes is to guarantee that oil seal lip 7 has a higher concentricity with respect to the oil sealing external diameter, and encapsulate part arc ring 9 is installed in the oil sealing base hole makes rubber that one suitable resiliently deformable be arranged, and prevents the leakage of oil of oil sealing external diameter.The middle body of rubber 2 is an oil sealing waist 4, on oil sealing waist 4, offer guide ring 5, retaining pasta 6, procheilon 7 and sealing surface 8, different with other oil sealing, retaining pasta 6 is spent more than or equal to 70 with the angle of oil sealing center line, after oil sealing installs, procheilon 7 produces interference with axial plane, because of rubber soft, procheilon 7 is to oily side shifting, and retaining pasta 6 is big to the general oil sealing of air side rake ratio, during axle rotation oil contact procheilon 7, centrifugal force because of axle rotation generation, most of oil is moved to abaxial direction along retaining pasta 6, and being transported to by guide ring 5 needs lubricated position, has reduced the leakage of oil sealing like this.Be pressed with several stepped shaft annular triangle strips 11,12,13,14,15,16 at sealing surface 8 conical surface patrixes, the band be with parallel to each other, anchor ring is square with the axis, the section of band is protruding triangle, summit 17 is less than or equal to 1mm with the spacing on last summit 18 under the triangle strip, and band is made up of many groups or one group of triangle.After oil sealing assembles, procheilon 7 contacts with the axle surface, because of interference, 3 to 4 ladders annular triangle strip 11 to 14 contacts with axial plane on the sealing surface 8, during the axle rotation, oil is by the procheilon 7 stepped shaft annular triangle strip that bleeds, run into the band wall, because the axle rotation forces oil to the motion of procheilon 7 directions, moves to summit 17 under the annular triangle strip, active force disengaging summit because of inertial force, oily side is arrived in the oily impelling of leaking, enter annular triangle strip 12, same principle if some unnecessary oil is shaken off annular triangle strip 11, unnecessary oily impelling is delivered in the annular triangle strip 11, return oily side again, thereby reach the oil sealing purpose, guaranteeing has a suitable oil film on the sealing surface.
Claims (2)
1, a kind of two-way impelling delivery type rotary shaft oil seal, by skeleton (1), rubber (2), spring (3) is formed, wherein the middle body of rubber (2) is oil sealing waist (4), on oil sealing waist (4), offer procheilon (7) and sealing surface (8), locating mold pressing at sealing surface (8) has several sections to be protruding triangle, and internal diameter is the triangle strip that stepped shaft increases progressively, the band be with parallel to each other, it is characterized in that: on oil sealing waist (4), also offer guide ring (5) and retaining pasta (6), above-mentioned skeleton (1) is a stepped shaft, its part exposes, remaining part is wrapped up by rubber (2), encapsulate part outer surface patrix is pressed with several arc rings (9), and above-mentioned triangle strip is annular triangle strip, the following summit (17) of annular triangle strip and the spacing≤1mm on last summit (18).
2, two-way impelling delivery type rotary shaft oil seal according to claim 1 is characterized in that: angle 〉=70 of described retaining pasta (6) and oil sealing center line °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94105084A CN1035786C (en) | 1994-05-18 | 1994-05-18 | Bidirectional jet delivery type rotary shaft oil seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94105084A CN1035786C (en) | 1994-05-18 | 1994-05-18 | Bidirectional jet delivery type rotary shaft oil seal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1112209A CN1112209A (en) | 1995-11-22 |
| CN1035786C true CN1035786C (en) | 1997-09-03 |
Family
ID=5031889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94105084A Expired - Fee Related CN1035786C (en) | 1994-05-18 | 1994-05-18 | Bidirectional jet delivery type rotary shaft oil seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1035786C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4366897B2 (en) * | 2002-02-28 | 2009-11-18 | Ｎｏｋ株式会社 | Mold processing method |
| CN100540959C (en) * | 2004-06-25 | 2009-09-16 | 伊格尔工业股份有限公司 | Sealing means |
| US8052152B2 (en) * | 2007-03-09 | 2011-11-08 | Federal-Mogul Corporation | Dynamic shaft seal and method of installation thereof |
| JP6290657B2 (en) * | 2014-03-07 | 2018-03-07 | 光洋シーリングテクノ株式会社 | Sealing device |
| CN113892004B (en) * | 2019-06-20 | 2024-07-19 | Nok株式会社 | Sealing means |
| CN113864455A (en) * | 2020-06-30 | 2021-12-31 | 舍弗勒技术股份两合公司 | Sealing ring |
| DE102022111844B3 (en) * | 2022-05-11 | 2023-09-14 | Trelleborg Sealing Solutions Germany Gmbh | Shaft seal and shaft arrangement for high rotational speeds |
-
1994
- 1994-05-18 CN CN94105084A patent/CN1035786C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1112209A (en) | 1995-11-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| C10 | Entry into substantive examination | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 430100 Wuhan city Caidian District Gaomiao success mountain No. 82 contact Tang Jiansheng Applicant after: Wuhan Chenggong sealing element factory Address before: 430100, 14, Xinjie street, Cai Xun District, Wuhan Applicant before: Wuhan Cai Xun District Success electronic equipment parts factory contact Chen Genlong |
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| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: CAI XUN WUHAN CITY DISTRICT OF THE SUCCESSFUL ELECTRONIC EQUIPMENT COMPONENTS PLANT ROOT CONTACT CHEN LUNG TO: WUHAN SUCCESSFULLY SEALED FACTORY |
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| 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 |