CN103277522B - A kind of oil sealing that can reduce pressure of lip - Google Patents
A kind of oil sealing that can reduce pressure of lip Download PDFInfo
- Publication number
- CN103277522B CN103277522B CN201310239478.5A CN201310239478A CN103277522B CN 103277522 B CN103277522 B CN 103277522B CN 201310239478 A CN201310239478 A CN 201310239478A CN 103277522 B CN103277522 B CN 103277522B
- Authority
- CN
- China
- Prior art keywords
- oil sealing
- support ring
- lip
- sealing
- rubs
- 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.)
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Links
- 238000007789 sealing Methods 0.000 title claims abstract description 78
- 239000013013 elastic material Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
Landscapes
- Sealing With Elastic Sealing Lips (AREA)
Abstract
The invention discloses a kind of oil sealing that can reduce pressure of lip, the sealing lip that described oil sealing comprises support ring, is coated on the elastic material outside support ring and extended by the elastic material outside support ring, the inner side of sealing lip is provided with groove, in groove, be provided with spring; It is characterized in that: described oil sealing also comprises the part that rubs for a pair, this comprises under cylinder section, cylindrical shell the part that rubs, and on terminal block folding part and cylindrical shell plane of structure portion, and on described cylindrical shell, the outer end in plane of structure portion is bent to form urceolus body downwards; Described urceolus body is inserted in the cavity between support ring and sealing lip, and is provided with space between urceolus body and support ring, is interference fit outside described sealing lip and cylinder section.The present invention can ensure that oil sealing inner space maintains a stable unfavourable pressure all the time, avoids because pressure is excessive, causes oil sealing enclasping force to increase, and wearing and tearing and frictional heat aggravate.
Description
Technical field
The present invention relates to a kind of oil sealing, especially relate to a kind of oil sealing that can reduce pressure of lip.
Background technique
Rotary shaft lip seal is mainly used in sealing between the parts that relatively rotate, prevents the lubricant oil of machinery inside from leaking.Conventional oil sealing is made up of support ring, rubber body and spring, and its medi-spring forms primary seal lip with the rubber body with given shape, realizes the sealing to axle.After oil sealing assembling, the elasticity lip position of being made up of rubber and running shaft interference fit, produce certain enclasping force to axle.Existence just because of enclasping force can make oil sealing keep sealing effect in Long-Time Service process.Although enclasping force is the necessary condition ensureing sealing, enclasping force also can produce harmful effect to oil seal lip, and that is exactly frictional heat, causes rubber mill to undermine aging.Especially, at High Rotation Speed and when having pressure, pressure can increase oil seal lip further to the enclasping force of axle, and the high-speed rotary change of team is accelerated rubber mill when enclasping force increases and undermined frictional heat, causes oil sealing to lose efficacy in a short time.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of oil sealing that can reduce pressure of lip; This oil sealing can reach to be had pressure and can keep permanently effective sealing effect in High Rotation Speed environment.
For solving the problems of the technologies described above, the present invention adopts following technological scheme:
Can reduce an oil sealing for pressure of lip, the sealing lip that described oil sealing comprises support ring, is coated on the elastic material outside support ring and extended by the elastic material outside support ring, the inner side of sealing lip is provided with groove, in groove, be provided with spring; Described oil sealing also comprises the part that rubs for a pair, and this comprises under cylinder section, cylindrical shell the part that rubs, and on terminal block folding part and cylindrical shell plane of structure portion, and on described cylindrical shell, the outer end in plane of structure portion is bent to form urceolus body downwards; Described urceolus body is inserted in the cavity between support ring and sealing lip, and is provided with space between urceolus body and support ring, is interference fit outside described sealing lip and cylinder section, realizes sealing; Described cylinder section endoporus and rotary component are interference fit, make to rotate together with rotary component the part that rubs.
Preferably, described the part that rubs to be made up through stamping process of steel plate.
Preferably, oil sealing support ring inner ring surface is provided with spiral chute.
Preferably, described spiral chute can be single head, double end or multi-head spiral line.
Preferably, described spiral chute sectional shape is triangle, triangle adds the shapes such as fillet, trapezoidal, semicircle, square or arc; Spiral chute is by going material machining.
Preferably, described support ring upper-end surface is concordant with oil sealing upper-end surface, and when can prevent oil sealing from manufacturing, sizing material flows to support ring inner ring surface, and blocking spiral chute, can extend spiral chute length simultaneously.
The present invention has following beneficial effect:
The present invention can ensure that oil sealing inner space maintains a stable unfavourable pressure all the time, avoids because pressure is excessive, causes oil sealing enclasping force to increase, and wearing and tearing and frictional heat aggravate.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail
Fig. 1 is that rear view is joined in conventional oil encapsulation;
Fig. 2 is oil seal structure schematic diagram of the present invention;
Fig. 3 is that the present invention removes oil sealing lip configurations and to the part rear screw groove schematic diagram that rubs;
Fig. 4 is view after oil sealing of the present invention assembling;
Fig. 5 is embodiment 1 spiral chute schematic cross-section;
Fig. 6 is embodiment 2 spiral chute schematic cross-section;
Fig. 7 is embodiment 3 spiral chute schematic cross-section;
Fig. 8 is embodiment 4 spiral chute schematic cross-section;
Fig. 9 is embodiment 5 spiral chute schematic cross-section;
Figure 10 is embodiment 6 spiral chute schematic cross-section.
Embodiment
Embodiment 1
A kind of oil sealing that can reduce pressure of lip, the sealing lip 3 that described oil sealing comprises support ring 1, is coated on the elastic material 2 outside support ring 1 and extended by the elastic material 2 outside support ring 1, the inner side of sealing lip 3 is provided with groove 31, is provided with spring 32 in groove 31; Described oil sealing also comprises the part 4 that rubs for a pair, and this comprises under cylinder section 41, cylindrical shell the part 4 that rubs, and on terminal block folding part 42 and cylindrical shell plane of structure portion 43, and on described cylindrical shell, the outer end in plane of structure portion 43 is bent to form urceolus body 44 downwards; Described urceolus body 44 is inserted in the cavity between support ring 1 and sealing lip 3, and is provided with space 11 between urceolus body 44 and support ring 1, is interference fit, realizes sealing outside described sealing lip 3 and cylinder section 41; The rotary component 5 that described cylinder section 41 endoporus seals with needs is interference fit, makes to rotate together with rotary component 5 part 4 that rubs;
Described the part 4 that rubs to be made up through stamping process of steel plate;
Described support ring 1 inner ring surface is provided with spiral chute 12, and described spiral chute sectional shape is triangle; Spiral chute 12 is by going material machining;
Described spiral chute 12 can be single head, double end or multi-head spiral line;
Described support ring 1 upper-end surface is concordant with oil sealing upper-end surface, and when can prevent oil sealing from manufacturing, sizing material flows to support ring inner ring surface, and blocking spiral chute 12, can extend spiral chute 12 length simultaneously.
Working principle of the present invention is as follows: oil sealing of the present invention is made up of two-part: ordinary construction oil sealing and to the part 4 that rubs; After oil sealing is installed, internal body seal space is divided into two-part: internal body space A and oil sealing inner space B, two-part are connected by ordinary construction oil sealing and to the gap of rubbing between part 4; During running, rotate part 4 outer ring surface that rubs is relative with support ring 1 inner ring surface, the sealing medium be between two anchor rings can follow generation annularly flow, and produces pressure to support ring 1 inner ring surface; Because spiral chute 12 has pump action, sealing medium can be flowed to internal body space A along spiral chute 12 by B direction, oil sealing inner space, thus causes the sealing medium at spiral chute 12 two ends to produce pressure difference, reduces the pressure of inner space B; Simultaneously, due to sealing medium in gap by the flowing of oil sealing inner space B to internal body space A, sealing medium can be stoped to flow to oil sealing inner space B by internal body space A, thus stop the pressure of internal body space A to be passed to oil sealing inner space B, thus ensure that oil sealing inner space B maintains a stable unfavourable pressure all the time, avoid because pressure is excessive, cause oil sealing enclasping force to increase, wearing and tearing and frictional heat aggravate.
Embodiment 2
Repeat embodiment 1, its difference is: described spiral chute 12 sectional shape is that triangle adds fillet.
Embodiment 3
Repeat embodiment 1, its difference is: described spiral chute 12 sectional shape is trapezoidal.
Embodiment 4
Repeat embodiment 1, its difference is: described spiral chute 12 sectional shape is for semicircle.
Embodiment 5
Repeat embodiment 1, its difference is: described spiral chute 12 sectional shape is square.
Embodiment 6
Repeat embodiment 1, its difference is: described spiral chute 12 sectional shape is arc.
The word in description orientation adopted herein " on ", D score, "left", "right" etc. are all convenience in order to illustrate based on the orientation in accompanying drawing shown in drawing, in actual device, these orientation may be different due to the disposing way of device.
Obviously, the above embodiment of the present invention is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here cannot give exhaustive to all mode of executions.Every belong to technological scheme of the present invention the apparent change of extending out or variation be still in the row of protection scope of the present invention.
Claims (5)
1. can reduce an oil sealing for pressure of lip, the sealing lip that described oil sealing comprises support ring, is coated on the elastic material outside support ring and extended by the elastic material outside support ring, the inner side of sealing lip is provided with groove, in groove, be provided with spring; It is characterized in that: described oil sealing also comprises the part that rubs for a pair, this comprises under cylinder section, cylindrical shell the part that rubs, and on terminal block folding part and cylindrical shell plane of structure portion, and on described cylindrical shell, the outer end in plane of structure portion is bent to form urceolus body downwards; Described urceolus body is inserted in the cavity between support ring and sealing lip, and is provided with space between urceolus body and support ring, is interference fit outside described sealing lip and cylinder section;
Oil sealing support ring inner ring surface is provided with spiral chute.
2. the oil sealing that can reduce pressure of lip according to claim 1, is characterized in that: be describedly made up through stamping process of steel plate the part that rubs.
3. the oil sealing that can reduce pressure of lip according to claim 1, is characterized in that: described spiral chute can be single head, double end or multi-head spiral line.
4. the oil sealing that can reduce pressure of lip according to claim 3, is characterized in that: described spiral chute sectional shape is triangle, triangle adds fillet, trapezoidal, semicircle, square or arc; Spiral chute is by going material machining.
5. the oil sealing that can reduce pressure of lip according to claim 1, is characterized in that: described support ring upper-end surface is concordant with oil sealing upper-end surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310239478.5A CN103277522B (en) | 2013-06-15 | 2013-06-15 | A kind of oil sealing that can reduce pressure of lip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310239478.5A CN103277522B (en) | 2013-06-15 | 2013-06-15 | A kind of oil sealing that can reduce pressure of lip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103277522A CN103277522A (en) | 2013-09-04 |
| CN103277522B true CN103277522B (en) | 2015-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310239478.5A Expired - Fee Related CN103277522B (en) | 2013-06-15 | 2013-06-15 | A kind of oil sealing that can reduce pressure of lip |
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| Country | Link |
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| CN (1) | CN103277522B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104534097B (en) * | 2014-12-26 | 2018-10-26 | 中国兵器工业集团第五三研究所 | A kind of kinetic pressure balancing rotating seal |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2729437Y (en) * | 2004-09-29 | 2005-09-28 | 上海麦华油封工业有限公司 | Oil seal (I) |
| CN201382155Y (en) * | 2009-02-25 | 2010-01-13 | 青岛开世密封工业有限公司 | Axially moving combined oil seal |
| CN201496550U (en) * | 2009-07-29 | 2010-06-02 | 青岛海力威密封有限公司 | End surface sealing oil seal |
| CN203374816U (en) * | 2013-06-15 | 2014-01-01 | 青岛开世密封工业有限公司 | Oil seal capable of reducing pressure of lips |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110133412A1 (en) * | 2009-12-09 | 2011-06-09 | Schaeffler Technologies Gmbh & Co. Kg | Seal arrangement |
-
2013
- 2013-06-15 CN CN201310239478.5A patent/CN103277522B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2729437Y (en) * | 2004-09-29 | 2005-09-28 | 上海麦华油封工业有限公司 | Oil seal (I) |
| CN201382155Y (en) * | 2009-02-25 | 2010-01-13 | 青岛开世密封工业有限公司 | Axially moving combined oil seal |
| CN201496550U (en) * | 2009-07-29 | 2010-06-02 | 青岛海力威密封有限公司 | End surface sealing oil seal |
| CN203374816U (en) * | 2013-06-15 | 2014-01-01 | 青岛开世密封工业有限公司 | Oil seal capable of reducing pressure of lips |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103277522A (en) | 2013-09-04 |
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Effective date of registration: 20201222 Address after: Room 303, building 4, Rizhao Intelligent Manufacturing Industrial Park, Shenzhen West Road, happy town, Lanshan District, Rizhao City, Shandong Province Patentee after: Shandong Junce Technology Service Co.,Ltd. Address before: 266031 No.7 Jiahe Road, Shibei District, Qingdao City, Shandong Province Patentee before: QINGDAO TKS SEALING INDUSTRY Co.,Ltd. |
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Granted publication date: 20151021 |