CN200940684Y - End sealed rotary shaft combined oil seal - Google Patents
End sealed rotary shaft combined oil seal Download PDFInfo
- Publication number
- CN200940684Y CN200940684Y CNU2006200245118U CN200620024511U CN200940684Y CN 200940684 Y CN200940684 Y CN 200940684Y CN U2006200245118 U CNU2006200245118 U CN U2006200245118U CN 200620024511 U CN200620024511 U CN 200620024511U CN 200940684 Y CN200940684 Y CN 200940684Y
- Authority
- CN
- China
- Prior art keywords
- seal
- face
- inner frame
- running shaft
- sealing
- 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
- 244000309464 bull Species 0.000 claims description 6
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 4
- 229920000459 Nitrile rubber Polymers 0.000 claims description 4
- 229920001971 elastomer Polymers 0.000 claims description 4
- 229910052731 fluorine Inorganic materials 0.000 claims description 4
- 239000011737 fluorine Substances 0.000 claims description 4
- 229920002379 silicone rubber Polymers 0.000 claims description 4
- 239000004945 silicone rubber Substances 0.000 claims description 4
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 238000005987 sulfurization reaction Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 27
- 230000000694 effects Effects 0.000 abstract description 7
- 238000005299 abrasion Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 abstract 1
- 230000003044 adaptive effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000010009 beating Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Images
Landscapes
- Sealing With Elastic Sealing Lips (AREA)
Abstract
The utility model relates to a sealing device, particularly to an oil sealing, comprising an inner framework, an outside framework and a sealing body. The sealing body is arranged with an end-face sealing lip. The character is that, the outside framework is vulcanized into an integrated structure with the sealing body; the outside framework and the inner framework are assembly combined as two independent components; the end-face sealing lip of the sealing body and the inside of the inner framework end-face are directly cooperated after the combination. Compared with existing technologies, the utility model has advantages of good sealing effect, long service life, strong adaptability to the axis eccentricity and the aixs vibration, and non-abrasion of the axis, etc.
Description
Technical field
The utility model relates to a kind of seal arrangement, especially relates to a kind of oil sealing.
Background technique
The sealing lip of oil sealing of the prior art generally all is arranged to radially lip seal form, if the excursion of axle rotational speed is when bigger like this, its adaptability is just poor, the phenomenon of sagittal plane leakage of oil occurs through regular meeting.The CN200420040096.6 patent that on May 11st, 2005 was announced, a kind of end face backflow potted line oil sealing is provided, it realizes sealing by the auxiliary radial seal lip of the end face seal lip that spiral return wire structure is set, and has strengthened the adaptive capacity that oil sealing changes the axle rotational speed.But this oil sealing is not strong for eccentric shaft, the axle adaptability of disturbing such as beat, and when especially often needing the axle class of high speed rotating to seal for engine crankshaft etc., problems such as leakage of oil still can occur.In addition, because the radial seal lip directly contacts with running shaft, for a long time after the use, even can cause the wearing and tearing of running shaft.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned defective, provides a kind of strong to the variation of axle rotational speed, eccentric shaft and the axle adaptability of beating, and axle is not had the end face seal formula running shaft combination oil seal of wearing and tearing.
The utility model is to realize like this, comprise inner frame, outer skeleton and seal, the end face seal lip is set on the seal, wherein, outer skeleton and seal sulfuration are integrated, and with inner frame as two individual components Assemblies, the end face seal lip on the seal of combination back directly cooperates with inner frame end face inboard.Inner frame end face inboard is provided with the left-handed or dextrorotation backflow line of bull, and the felt pad is set between seal and the inner frame, and the felt pad is pasted and fixed on the seal.Inside and outside skeleton is set to thin-walled cold rolled sheet skeleton, and seal is set to silicone rubber, fluorine rubber, nitrile rubber.
Because the utility model inner frame in use rotates with running shaft, in its end face seal process sealing lip only with the inner frame end face in side contacts, contactless with running shaft, so fundamentally avoided wearing and tearing to running shaft, its superior end face seal structure is also stronger to eccentric shaft, the axle adaptive capacity of disturbing such as beat, and the influence that changed by the running shaft rotational speed is minimum, so good sealing effect of the utility model end face seal formula running shaft combination oil seal, long service life, adaptive capacity is stronger.
Description of drawings
Fig. 1 is a sectional view of the present utility model.
Fig. 2 is one of assembling schematic diagram of the present utility model.
Fig. 3 is two of an assembling schematic diagram of the present utility model.
Fig. 4 is a working principle schematic representation of the present utility model.
Embodiment
As shown in Figure 1, the utility model comprises inner frame 1, outer skeleton 2 and seal 3, end face seal lip 4 is set on the seal, wherein, outer skeleton 2 and seal 3 sulfurations are integrated, and with inner frame 1 as two individual components Assemblies, end face seal lip 4 end capacity compressions on the seal of combination back compel to bend and with inner frame 1 end face in side contacts, rely on seal silicone rubber, fluorine rubber, nitrile rubber material self elasticity cooperates with the inboard left-handed backflow line 5 of bull that is provided with of inner frame end face, between seal 3 and the inner frame 1 felt pad 6 is set, felt pad 6 is pasted and fixed on the seal 3.Wherein, inner frame 1 and outer skeleton 2 adopt the thin-walled cold rolled sheet to make, and seal 3 adopts silicone rubber, fluorine rubber, nitrile rubber to make.
During use, as shown in Figure 2, at first utilize pressing element 9 that inner frame 1 is assemblied on the axle 7, because inner frame 1 adopts interference fit with axle 7, the latter two contact surfaces of press fit arrangement form sealing naturally.Then as shown in Figure 3, utilize pressing element 10 to be pressed in the pre-drilled cavity of body 8 on the felt pad 6 that vulcanizes all-in-one-piece outer skeleton 2 and seal 3 and be pasted and fixed on the seal 3, concordant until seal 3 with inner frame 1 outside end face, so just finish the installation of the utility model end face seal formula running shaft combination oil seal and realized its assembling (as shown in Figure 4) simultaneously.Because the outer round surface of seal 3 and the outer round surface of outer skeleton 2 and the hole wall of body 8 also adopt interference fit, therefore the back is installed on surface of contact, also forms sealing naturally, meanwhile, the left-handed backflow line 5 of bull that is provided with on end face seal lip 4 on the seal of assembling back and inner frame 1 end face inboard and the end face inboard cooperates the formation end face seal, when axle 7 turns clockwise, because the existence of the left-handed return wire 5 of bull, pump suction effect is obvious, back-flow velocity is fast, and the end face seal effect is very good.Felt pad 6 can prevent that not only dust from entering, and its ventilating performance is good, can in time the heat that produces in the using process be dispersed into space outerpace, and then prolongs the working life of oil sealing.The utility model in use, inner frame 1 is with axle 7 rotations, therefore can not cause any damage to axle, again because the sealing lip 4 and the felt pad 6 that contact with inner frame 1 all are easy to take place deformation, when axle 7 occurs eccentric or improper situation such as beats, end face seal can be adjusted automatically, guarantees the effect of sealing.In addition, the utility model sealing radially mainly utilizes is metal frame and axle 7 and formed sealing naturally of 8 interference fit of body, and and 8 uses of body seal 3 carry out auxiliary seal, so its apex seal performance is more reliable.
Carry out the running shaft that contrary inserting needle direction is rotated for needs, only the utility model end face seal formula running shaft combination oil seal that need select for use inner frame end face inboard that bull dextrorotation backflow line is set gets final product.
The utility model end face seal formula running shaft combination oil seal, be subjected to a rotational speed variable effect minimum, strong to eccentric shaft and the axle adaptability of bad interference such as beat, axle there are not the wearing and tearing of rotation, good sealing effect and long service life can be widely used in the sealing of running shaft classes such as engine crankshaft.
Claims (6)
1. end face seal formula running shaft combination oil seal, comprise inner frame, outer skeleton and seal, the end face seal lip is set on the seal, it is characterized in that the sulfuration of outer skeleton and seal is integrated, and with inner frame as two individual components Assemblies, the end face seal lip on the seal of combination back directly cooperates with inner frame end face inboard.
2. end face seal formula running shaft combination oil seal according to claim 1 is characterized in that inner frame end face inboard is provided with the left-handed or dextrorotation backflow line of bull.
3. end face seal formula running shaft combination oil seal according to claim 2 is characterized in that inside and outside skeleton is set to thin-walled cold rolled sheet skeleton.
4. end face seal formula running shaft combination oil seal according to claim 1 is characterized in that being provided with between seal and the inner frame felt pad.
5. end face seal formula running shaft combination oil seal according to claim 3 is characterized in that the felt pad is pasted and fixed on the seal.
6. end face seal formula running shaft combination oil seal according to claim 3 is characterized in that seal is set to silicone rubber, fluorine rubber, nitrile rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200245118U CN200940684Y (en) | 2006-05-23 | 2006-05-23 | End sealed rotary shaft combined oil seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200245118U CN200940684Y (en) | 2006-05-23 | 2006-05-23 | End sealed rotary shaft combined oil seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200940684Y true CN200940684Y (en) | 2007-08-29 |
Family
ID=38746861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200245118U Expired - Fee Related CN200940684Y (en) | 2006-05-23 | 2006-05-23 | End sealed rotary shaft combined oil seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200940684Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102353600A (en) * | 2011-06-13 | 2012-02-15 | 青岛开世密封工业有限公司 | Testing method of dry friction of oil-sealed lip mouth |
| CN107676484A (en) * | 2014-06-10 | 2018-02-09 | Nok株式会社 | Sealing device |
| CN110062859A (en) * | 2017-08-24 | 2019-07-26 | 国立大学法人埼玉大学 | Sealing device |
| US10934970B2 (en) | 2018-09-10 | 2021-03-02 | Caterpillar Inc. | Crankshaft seal |
-
2006
- 2006-05-23 CN CNU2006200245118U patent/CN200940684Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102353600A (en) * | 2011-06-13 | 2012-02-15 | 青岛开世密封工业有限公司 | Testing method of dry friction of oil-sealed lip mouth |
| CN102353600B (en) * | 2011-06-13 | 2013-06-26 | 青岛开世密封工业有限公司 | Testing method of dry friction of oil-sealed lip mouth |
| CN107676484A (en) * | 2014-06-10 | 2018-02-09 | Nok株式会社 | Sealing device |
| US10352450B2 (en) | 2014-06-10 | 2019-07-16 | Nok Corporation | Sealing device |
| US10683935B2 (en) | 2014-06-10 | 2020-06-16 | Nok Corporation | Sealing device |
| CN110062859A (en) * | 2017-08-24 | 2019-07-26 | 国立大学法人埼玉大学 | Sealing device |
| US10934970B2 (en) | 2018-09-10 | 2021-03-02 | Caterpillar Inc. | Crankshaft seal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070829 Termination date: 20120523 |