CN201129459Y - Rotational axis lip-shaped sealing ring - Google Patents
Rotational axis lip-shaped sealing ring Download PDFInfo
- Publication number
- CN201129459Y CN201129459Y CNU200720127833XU CN200720127833U CN201129459Y CN 201129459 Y CN201129459 Y CN 201129459Y CN U200720127833X U CNU200720127833X U CN U200720127833XU CN 200720127833 U CN200720127833 U CN 200720127833U CN 201129459 Y CN201129459 Y CN 201129459Y
- Authority
- CN
- China
- Prior art keywords
- seal element
- primary seal
- rotary shaft
- sleeve
- skeleton
- 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 - Lifetime
Links
- 238000007789 sealing Methods 0.000 title abstract description 15
- 230000007704 transition Effects 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 8
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 8
- 238000005299 abrasion Methods 0.000 abstract description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007363 ring formation reaction Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005987 sulfurization reaction Methods 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
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- Sealing With Elastic Sealing Lips (AREA)
Abstract
The utility model discloses a rotating shaft lip-type sealing ring, which comprises an annular framework, a major seal element, an auxiliary seal element and an external locating sleeve, wherein the external locating sleeve is coated on the outer circumference of the framework, the major seal element is arranged on one side of the framework, the axis included angle between the upper portion and the lower portion of the major seal element is 90 degrees, the major seal element is provided with a transition section and an annular shaft sleeve, the outer side of the shaft sleeve contacts with both the lower portions of the major seal element and the auxiliary seal element, a convex ring radially embossed inwardly is arranged on the right half side of the external locating sleeve, the left side and the right side of the convex ring are respectively connected with the upper portion of the major seal element and one side of the auxiliary seal element, the framework is arranged between the external locating sleeve and the top end of the major seal element, and further an inner locating sleeve is arranged on the inner side of the shaft sleeve. The rotating shaft lip-type sealing ring is simple in structure and excellent in sealing effect, and can be replaced conveniently without causing abrasion to the rotating shaft.
Description
Technical field
The utility model relates to a kind of seal ring, particularly relates to a kind of rotary shaft lip seal that is sheathed on the running shaft outside.
Background technique
Sell and use many rotation axis seal circles in the market, as shown in Figure 1, its structure comprises setting sleeve 3, inner frame 2, outer skeleton 1, main lip 4 and secondary lip 5, setting sleeve 3 is set in outer skeleton 1 outside, and main lip 4 and secondary lip 5 tops all are located between inner frame 2 and the outer skeleton 1, and main lip 4 is 90 ° with the angle of secondary lip 5 tops and bottom, there is the arc-shaped transition section at the middle part, and main lip 4 contacts the bottom from being " people " font with secondary lip 5 tops.Main lip 4 is sheathed on the running shaft with secondary lip 5, winner's lip 4 is contacted with running shaft with secondary lip 5 lower horizontal part to be sealed, because main lip 4 and secondary lip 5 all adopt polytetrafluoroethylmaterial material to make, teflon is the extraordinary material of a kind of wear resistance, because master's lip 4 is motionless with secondary lip 5 during the running shaft rotation, running shaft and main lip 4 and 5 frictions of secondary lip, the wearing and tearing of long-time use rear axle are more serious, need to change running shaft, but the cost of changing running shaft is than higher, and operates cumbersome.
Summary of the invention
The utility model is finished in order to solve deficiency of the prior art, and it is a kind of simple in structure that the purpose of this utility model provides, and good sealing effect is changed rotary shaft lip seal more convenient, the running shaft that do not wear and tear.
Rotary shaft lip seal of the present utility model, comprise skeleton, primary seal element, auxiliary seal element and primary seal element, described skeleton, primary seal element, auxiliary seal element and outside setting sleeve are annular, described outside setting sleeve is sheathed on the described skeleton excircle, described primary seal element is positioned at described skeleton one side, described primary seal element top and bottom radially angle are 90 ° and are provided with changeover portion, also comprise an annular sleeve, the described axle sleeve outside all contacts with the bottom of described primary seal element with described auxiliary seal element, described outside setting sleeve right-hand part is formed with radially the bulge loop to internal protrusion, the top and auxiliary seal element one side that are connected described primary seal element on the left of the described bulge loop with the right side respectively, described skeleton is between outside setting sleeve and described primary seal element top, and the inboard of described axle sleeve is equipped with the positioned internal cover.
Rotary shaft lip seal of the present utility model can also be:
Described primary seal element upper right and described auxiliary seal element left side and described bulge loop left side and right side adhesion.
The bulge loop right side is provided with adhesive trough, in the described adhesive trough Bond is housed.
Described axle sleeve comprises integrally formed axial horizontal ring and is positioned at the radially perpendicular ring that described horizontal ring two ends stretch upwards that the bottom of described primary seal element contacts with described horizontal anchor ring.
The vertical top radial cross section of described primary seal element is a rectangle, and described primary seal element lower horizontal part radial cross section is a waveform.
Transition section is a waveform between described primary seal element top and the bottom.
Described primary seal element bottom is provided with oil-return groove.
Described oil-return groove is the rotary oil-return groove of eddy current.
Described skeleton radial cross section has the shape of montant for the crossbeam right, and the turning end of described skeleton is plugged in the central authorities of the bulge loop of described outside setting sleeve.
Described primary seal element is made by polytetrafluoroethylmaterial material, and described auxiliary seal element is made by felt, and described outside setting sleeve and positioned internal cover are made by rubber material.
Rotary shaft lip seal of the present utility model, in terms of existing technologies because annular sleeve is set, the annular sleeve inwall is provided with the positioned internal cover, the positioned internal cover can be fixed with running shaft, and the outside of axle sleeve all contacts with the auxiliary seal element lower portions with primary seal element, the sealing oil in the left side of axle sleeve is splashed afterwards to contact with primary seal element and is sealed, like this since primary seal element and auxiliary seal element all with the axle sleeve friction, and the positioned internal cover makes axle sleeve rotate with running shaft, guarantee that running shaft can not wear and tear, primary seal element and auxiliary seal component abrasion be axle sleeve, when the wearing and tearing of certain hour rear axle housing are relatively more severe, can directly change seal ring, and need not change running shaft, therefore for changing running shaft, cost has reduced, more convenient to operate, owing to can in time change after the axle sleeve wearing and tearing, so sealing effect is better.
Description of drawings
Fig. 1 is the rotary shaft lip seal sectional view of the utility model prior art.
Fig. 2 is the utility model rotary shaft lip seal embodiment schematic representation.
Fig. 3 is the utility model rotary shaft lip seal sectional view.
The figure number explanation
1 ... outer skeleton 2 ... inner frame 3 ... setting sleeve 4 ... main lip
5 ... secondary lip 11 ... skeleton 12 ... outside setting sleeve 13 ... axle sleeve
14 ... primary seal element 15 ... auxiliary seal element 16 ... the positioned internal cover
17 ... bulge loop
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
Specific embodiment one
Rotary shaft lip seal of the present utility model, please refer to Fig. 2 and Fig. 3, comprise skeleton 11, primary seal element 14, auxiliary seal element 15 and outside setting sleeve 12, skeleton 11, primary seal element 14, auxiliary seal element 15 and outside setting sleeve 12 are annular, outside setting sleeve 12 rings are established on the circumference that is sheathed on skeleton 11 outsides, primary seal element 14 is positioned at skeleton 11 1 sides, the top of main close element and bottom radially angle are 90 ° and are provided with changeover portion, changeover portion guarantees that primary seal element 14 tops and bottom are 90 ° for progressively transitting to angle, promptly guarantees progressively progressively to be transitted to by the vertical direction on top the substantially horizontal of bottom.Rotary shaft lip seal of the present utility model also comprises an annular sleeve 13, the outside of this axle sleeve 13 contacts with the bottom of primary seal element 14 and the bottom of auxiliary seal element 15 simultaneously, when axle sleeve 13 during with respect to 15 rotations of primary seal element 14 and auxiliary seal element, primary seal element 14 bottoms and auxiliary seal element 15 bottoms and axle sleeve 13 produce frictional force, make seal ring can play the effect of sealing.In order to guarantee sealing effect, the bottom of primary seal element 14 must closely contact with axle sleeve 13, guaranteeing not can leakage of oil, therefore primary seal element 14 is bigger with the frictional force of axle sleeve 13, therefore, what the seal ring of this spline structure made final wearing and tearing is axle sleeve 13, rather than running shaft, axle sleeve 13 wearing and tearing backs are directly changed the integral sealing circle and are got final product, with respect to changing running shaft behind the wearing and tearing running shaft, reduce cost greatly, and owing to rotary shaft lip seal of the present utility model is socketed on the running shaft, and running shaft links together with miscellaneous part, therefore, it is more much easier than changing the running shaft that also is connected with miscellaneous part to change whole seal ring, makes things convenient for manyly.Skeleton 11 and outside 12 inboard connections of setting sleeve, the effect that skeleton 11 is set is to guarantee that outside setting sleeve 12 has enough rigidity, plays supports outer setting sleeve 12.Outside setting sleeve 12 right-hand parts are formed with along outside setting sleeve 12 radially to the bulge loop 17 of internal protrusion, the left side of bulge loop 17 and right side are connected a side and auxiliary seal element 15 1 sides on primary seal element 14 tops respectively, skeleton 11 is between outside setting sleeve 12 and primary seal element 14 tops, be that skeleton 11 is positioned at outside setting sleeve 12 inboards, side contacts in the top of primary seal element 14 and the skeleton 11.Be equipped with positioned internal cover 16 in axle sleeve 13 inboards, positioned internal cover 16 can be fixed together with running shaft, make and to guarantee that axle sleeve 13 rotates with running shaft, concrete positioned internal cover 16 can be by being fixed on the running shaft with the running shaft interference fit, also can be that other modes are fixed.Primary seal element 14 is made by polytetrafluoroethylmaterial material, and auxiliary seal element 15 is made by felt, and outside setting sleeve 12 and positioned internal cover 16 are made by rubber material.The good sealing effect of rubber, and rubber is flexible, and the positioned internal cover 16 that rubber is made guarantees that itself and axle sleeve 13 are also more fixing than being easier to socket, can not damage running shaft when interference fit is installed and changed.
Specific embodiment two
Rotary shaft lip seal of the present utility model please refer to Fig. 3, in the structure contact of specific embodiment one, can also be that the right side and bulge loop 17 left sides on primary seal element 14 tops are bonding, and the right side of auxiliary seal element 15 left sides and bulge loop 17 is bonding.The right side on primary seal element 14 tops and bulge loop 17 left sides are bonding can be by the Bond bonding, can also be by making bulge loop 17 and primary seal element 14 and auxiliary seal element 15 bond together after outside setting sleeve 12 sulfurations.Can also be adhesive trough to be set on the right side of bulge loop 17, Bond is housed in adhesive trough, because auxiliary seal element 15 bondings are more firm like this, especially under the situation that auxiliary seal element 15 is made by felt, because the cohesive force after the felt and the vulcanization of rubber is not strong, need extra Bond to bond.
Specific embodiment three
Rotary shaft lip seal of the present utility model, please refer to Fig. 3, on specific embodiment one or two basis, axle sleeve 13 concrete structures own comprise integrally formed axial horizontal ring and are positioned at the upwardly extending perpendicular ring formation radially in horizontal ring two ends, the radial cross section of solid box 13 is the shape that by-level rectangle two ends are provided with the rectangle of the extension that raises up, the axle sleeve 13 of this spline structure, the perpendicular ring in left side can stop that the sealing oil that is positioned at axle sleeve 13 left sides in a large number is splashed on the primary seal element 14, only there is sub-fraction to be splashed on the primary seal element 14 by the space between perpendicular ring and the skeleton 11, reduce the pressure of sealing oil, improve the life-span of integral sealing circle primary seal element 14.The inboard of horizontal ring contacts with the bottom surfaces of primary seal element 14, and the face contact performance is relatively good, good sealing effect.Can also be primary seal element 14 top straight the part vertical cross-section be rectangle, lower horizontal part radial cross section is a waveform, and the changeover portion between primary seal element 14 upper and lower parts also is a waveform.Can also be the rotary oil-return groove of eddy current to be set in primary seal element 14 bottoms, oil-return groove and waveform primary seal element 14 bottoms and changeover portion, make primary seal element 14 and axle sleeve 13 friction factor reduce, improve the wear resistance of axle sleeve, and then the working life of improving axle sleeve, the working life of improving seal ring.It can also be the radial cross section of ring skeleton 11 has montant for the crossbeam right shape, be to be horizontally disposed rectangular in the middle of sectional shape is, right-hand member is to the shape that has protruding rectangle, the turning end of skeleton 11 is plugged in the middle part of outside setting sleeve 12 bulge loops 17, such skeleton 11 fully can supports outer setting sleeve 12, improve the rigidity of outside setting sleeve 12, and because outside setting sleeve 12 is provided with bulge loop 17, and the turning end of skeleton 11 is plugged on the middle part of outside setting sleeve 12 bulge loops 17, improves outside positioning ring left side and right side rigidity simultaneously.
Above-mentionedly only several specific embodiments in the utility model are illustrated; but can not be as protection domain of the present utility model; every equivalence of having done according to the design spirit in the utility model changes or modifies, and all should think to fall into protection domain of the present utility model.
Claims (10)
1. rotary shaft lip seal, comprise skeleton (11), primary seal element (14), auxiliary seal element (15) and outside setting sleeve (12), described skeleton (11), primary seal element (14), auxiliary seal element (15) and outside setting sleeve (12) are annular, described outside setting sleeve (12) is sheathed on described skeleton (11) excircle, described primary seal element (14) is positioned at described skeleton (11) one sides, described primary seal element (14) top and bottom radially angle are 90 ° and are provided with changeover portion, it is characterized in that: also comprise an annular sleeve (13), described axle sleeve (13) outside all contacts with the bottom of described primary seal element (14) with described auxiliary seal element (15), described outside setting sleeve (12) right-hand part is formed with radially the bulge loop (17) to internal protrusion, the top and auxiliary seal element (15) one sides that are connected described primary seal element (14) on the left of the described bulge loop (17) with the right side respectively, described skeleton (11) is positioned between outside setting sleeve (12) and described primary seal element (14) top, and the inboard of described axle sleeve (13) is equipped with positioned internal cover (16).
2. rotary shaft lip seal according to claim 1 is characterized in that: described primary seal element (14) upper right and described auxiliary seal element (15) left side and described bulge loop (17) left side and right side adhesion.
3. rotary shaft lip seal according to claim 2 is characterized in that: bulge loop (17) right side is provided with adhesive trough, in the described adhesive trough Bond is housed.
4. according to claim 1 or 2 or 3 described rotary shaft lip seals, it is characterized in that: described axle sleeve comprises integrally formed axial horizontal ring and is positioned at the radially perpendicular ring that described horizontal ring two ends stretch upwards that the bottom of described primary seal element (14) contacts with described horizontal anchor ring.
5. according to claim 1 or 2 or 3 described rotary shaft lip seals, it is characterized in that: the vertical top radial cross section of described primary seal element (14) is a rectangle, and described primary seal element (14) lower horizontal part radial cross section is a waveform.
6. rotary shaft lip seal according to claim 5 is characterized in that: transition section is a waveform between described primary seal element (14) top and the bottom.
7. rotary shaft lip seal according to claim 5 is characterized in that: described primary seal element (14) bottom is provided with oil-return groove.
8. rotary shaft lip seal according to claim 7 is characterized in that: described oil-return groove is the rotary oil-return groove of eddy current.
9. according to claim 1 or 2 or 3 described rotary shaft lip seals, it is characterized in that: described skeleton (11) radial cross section has the shape of montant for the crossbeam right, and the turning end of described skeleton (11) is plugged in the central authorities of the bulge loop (17) of described outside setting sleeve (12).
10. according to claim 1 or 2 or 3 described rotary shaft lip seals, it is characterized in that: described primary seal element (14) is made by polytetrafluoroethylmaterial material, described auxiliary seal element (15) is made by felt, and described outside setting sleeve (12) and positioned internal cover (16) are made by rubber material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720127833XU CN201129459Y (en) | 2007-07-25 | 2007-07-25 | Rotational axis lip-shaped sealing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720127833XU CN201129459Y (en) | 2007-07-25 | 2007-07-25 | Rotational axis lip-shaped sealing ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201129459Y true CN201129459Y (en) | 2008-10-08 |
Family
ID=40017304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720127833XU Expired - Lifetime CN201129459Y (en) | 2007-07-25 | 2007-07-25 | Rotational axis lip-shaped sealing ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201129459Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018231723A1 (en) | 2017-06-12 | 2018-12-20 | Garlock Sealing Technologies, Llc | Multi-layered ptfe radial lip seal |
| CN109973658A (en) * | 2019-04-20 | 2019-07-05 | 清华大学 | A kind of self compensation intelligence lip packing |
-
2007
- 2007-07-25 CN CNU200720127833XU patent/CN201129459Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018231723A1 (en) | 2017-06-12 | 2018-12-20 | Garlock Sealing Technologies, Llc | Multi-layered ptfe radial lip seal |
| KR20200008019A (en) * | 2017-06-12 | 2020-01-22 | 갈록 실링 테크놀로지스 엘엘씨 | Multilayer PTFE Radial Lip Seal |
| EP3638932A4 (en) * | 2017-06-12 | 2021-03-03 | Garlock Sealing Technologies LLC | MULTI-LAYER PTFE RADIAL LIP SEAL |
| US11118685B2 (en) | 2017-06-12 | 2021-09-14 | Garlock Sealing Technologies, Llc | Multi-layered PTFE radial lip seal |
| US11655897B2 (en) | 2017-06-12 | 2023-05-23 | Garlock Sealing Technologies, Llc | Multi-layered PTFE radial lip seal |
| KR102541844B1 (en) | 2017-06-12 | 2023-06-12 | 갈록 실링 테크놀로지스 엘엘씨 | Multilayer PTFE radial lip seal |
| CN109973658A (en) * | 2019-04-20 | 2019-07-05 | 清华大学 | A kind of self compensation intelligence lip packing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG PROVINCE DARIO SEALS CO., LTD. Free format text: NEW ADDRESS: NO.39, FUHAO ROAD, SANXI INDUSTRIAL PARK DISTRICT, OUHAI ECONOMIC DEVELOPMENT ZONE, WENZHOU CITY, ZHEJIANG PROVINCE, ZIP CODE:325014 |
|
| CP02 | Change in the address of a patent holder |
Address after: No. 39, Regal Road, three industrial zone, Ouhai Economic Development Zone, Zhejiang, Wenzhou Province: 325014 Patentee after: Zhejiang Oufu Sealing Parts Co., Ltd. Address before: No. 213 Dongfang Road, Ouhai Development Zone, Zhejiang, Wenzhou Province: 325014 Patentee before: Zhejiang Oufu Sealing Parts Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081008 |