CN107939977A - A kind of more lip mouth skeleton oil seals - Google Patents
A kind of more lip mouth skeleton oil seals Download PDFInfo
- Publication number
- CN107939977A CN107939977A CN201711363031.3A CN201711363031A CN107939977A CN 107939977 A CN107939977 A CN 107939977A CN 201711363031 A CN201711363031 A CN 201711363031A CN 107939977 A CN107939977 A CN 107939977A
- Authority
- CN
- China
- Prior art keywords
- lip
- oil
- oil sealing
- outer ring
- main body
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
- F16J15/3208—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip provided with tension elements, e.g. elastic rings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
- F16J15/3224—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip capable of accommodating changes in distances or misalignment between the surfaces, e.g. able to compensate for defaults of eccentricity or angular deviations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
- F16J15/3232—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3248—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing With Elastic Sealing Lips (AREA)
- Sealing Of Bearings (AREA)
Abstract
The invention belongs to mechanical equipment technical field, more particularly to a kind of more lip mouth skeleton oil seals, solving existing outside framework oil seal can not effectively avoid external particle from damaging oil seal lip, and the problem of control oil sealing gauze effect and poor protection high value axial workpiece ability, including skeleton and oil sealing main body annular in shape, the outer surface of oil sealing main body is provided with outer ring annular in shape, outer ring is inclined relative to horizontal setting, and a radial direction dustproof lip and multiple radial seal lips are provided with the outer circumferential surface of outer ring, the inner peripheral surface of outer ring is being both provided with external tension spring with each radial seal lip opposite position, the inner surface of oil sealing main body is provided with inner ring, inner ring can be connected with rotation axis.The present invention can avoid damage of the external particle material to oil seal lip, effectively control the gauze effect in oil sealing work and oil sealing has wear extent compensation function, multiple lip seal is strong, protects high value part to greatest extent.
Description
Technical field
The invention belongs to mechanical equipment technical field, and in particular to a kind of more lip mouth skeleton oil seals.
Background technology
The oil leakage caused by abrasion is one of mechanical equipment FAQs, and oil leak can cause burn-out of bearing, environment
The serious consequences such as pollution.The most seal of application is rotary shaft lip seal on the market at present, is also outside framework oil seal.Oil sealing
Generally include the secondary lip of a main lip and one, including main lip, and contacted with the lubricating oil in cavity, undertake sealing and make
With secondary lip outside, undertakes dustproof effect.The sealing mechanism of outside framework oil seal is due to that there is oil sealing sword between oil sealing and axis
The oil film of mouth control, this oil film have fluid lubrication characteristic.Under the action of surface tension of liquid, the rigidity of oil film makes oil just
Film forms a new lunar surface with air contact end, prevents working media from leaking, so as to fulfill the sealing of rotation axis.
In practical applications, it is main with the accumulation of time due to keeping relative rotary motion between axis and oil sealing for a long time
Particulate material can be produced between lip and rotation axis, under long-term abrasive action, gauze is on the one hand formed at oil sealing sealing
Effect, on the other hand also can form groove on the surface of axis, ultimately result in oil leak.Further, since shaft run-out, cylindrical essence
Degree and roughness, can all influence the performance of oil sealing performance.
Therefore, there is an urgent need to it is a kind of it is cost-effective, adaptable, be conveniently replaceable, do not damage the higher rotation axis of cost, and
And can be in the seal of long-term stable operation under bad working environments.
Patent 201410557427.1 discloses a kind of more lip skeleton-type oil seal devices, by the lip of multiple and different structures
Cause for gossip shows sealing function, although can be very good to solve gauze effect, these lips are arranged in the inner headed face of outside framework oil seal
On, not only the machining accuracy to rotation axis and rotation require high, but also costly axial workpiece can be caused to damage.Patent
201510784437.3 disclose a kind of oil enveloping structure, employ the sealing structure of oil sealing+protection bowl, its stem seal design is at the same time
Bidirectional seal structure comprising axial seal lip and radial seal lip, coordinates protection bowl to use, has preferable sealing effect.But
Be oil sealing in use for some time, after oil seal lip and counterpart surface abrasion, oil sealing is bad to the compensation effect of wear extent,
Although also using radially more lip designs in case study on implementation two, it was found from its lip configuration, oil sealing mainly passes through main lip
Mouthful preventing axial oil leak, other several lips mainly play dustproof effect, and it coordinates protection bowl to use, and structure is more complicated,
Manufacturing cost and use cost is excessive, it can not be effectively promoted because cost performance is too low in actual use.
The content of the invention
The present invention is excessive to Machining of Shaft-type Parts precision and hardness requirement in order to solve existing outside framework oil seal, can not be effective
External particle material is avoided to damage oil seal lip, and control oil sealing gauze effect and the energy for protecting high value axial workpiece
Power is poor, while there are the problem of oil sealing service life is short, replacement difficulty is big, there is provided a kind of more lip mouth skeleton oil seals.
The present invention is achieved through the following technical solutions：A kind of more lip mouth skeleton oil seals, including skeleton and annular in shape
Oil sealing main body, the outer surface of oil sealing main body are provided with outer ring annular in shape, and outer ring is inclined relative to horizontal setting, and outer ring
Be provided with a radial direction dustproof lip and multiple radial seal lips on outer circumferential surface, the inner peripheral surface of outer ring with each radial seal lip phase
Correspondence position is both provided with external tension spring, and the inner surface of oil sealing main body is provided with inner ring, and inner ring can coordinate with rotation axis and connect
Connect, and in rotation axis rotation process with inner ring without relative motion.
Multiple radial seal lips are axially arranged on the same side of radial direction dustproof lip.
Preferably, the angle of outer ring and horizontal plane is 5 °~8 °.
Preferably, inner ring is screw-type endoporus.
Outer ring outer cover is equipped with the wear-resistant sleeve of tubulose, and wear-resistant sleeve interference fit is connected with bearing cap.
On the inside of bearing cap the first top wire hole and the second top wire hole are being respectively arranged with positioned at oil sealing main body and wear-resistant sleeve position.
The present invention has an advantageous effect in that compared with prior art：
The configuration of the present invention is simple, design are reasonable, and radial direction dustproof lip and radial seal lip are designed to the outer peripheral surface in oil sealing main body
On, including a radial direction dustproof lip and multiple radial seal lips, the effect of radial direction dustproof lip is to prevent extraneous graininess thing
Matter enters on the contact surface of oil sealing and wear-resistant sleeve, protects oil seal lip to be worn from extraneous particulate matter to greatest extent, multiple
Radial seal lip can play the role of preventing axial oil leak, and oil sealing outer ring is with the horizontal 5 °~8 ° so that radially close
Envelope lip has certain pretension, and is designed with external tension spring in each radial seal lip inner surface, and metallic framework carries in addition
The radial tension of confession, on the one hand ensures that a kind of more lip mouth skeleton oil seals of the present invention are fitted close with wear-resistant sleeve, on the other hand can be more
The wear extent of good Compensation oil seal lip and wear-resistant sleeve inner ring, it is ensured that airtight quality, while the service life of oil sealing is extended,
The first top wire hole and the second top wire hole are designed in actual use on bearing cap, convenient dismounting, replace oil sealing and wear-resistant sleeve so that
The present invention has high reliability and high performance-price ratio, can effectively improve service life of the outside framework oil seal of the present invention under bad working environments.
The present invention greatly reduces precision and hardness requirement of the oil sealing to axis, avoids external particle material to oil seal lip
The damage of mouth, effectively controls the gauze effect of oil sealing at work, improves oil sealing wear extent compensation function, protect to greatest extent
Protect high value part.
Brief description of the drawings
Fig. 1 is the structure diagram for inventing more lip mouth skeleton oil seals；
Fig. 2 is the mounting structure schematic diagram of the present invention.
In figure：1- radial direction dustproof lips, 2- inner rings, 3- outer rings, 4- radial seal lips, 5- external tension springs, 6- skeletons, 7- axis
Hold lid, 8- rotation axis, the first top wire holes of 9-, 10- wear-resistant sleeves, the second top wire holes of 11-.
Embodiment
The present invention is further elaborated referring to Figures 1 and 2, a kind of more lip mouth skeleton oil seals, including skeleton 6 and in ring
The oil sealing main body of shape, the outer surface of oil sealing main body are provided with outer ring 3 annular in shape, and outer ring 3 is inclined relative to horizontal setting, and
Be provided with a radial direction dustproof lip 1 and multiple radial seal lips 4 on the outer circumferential surface of outer ring 3, the inner peripheral surface of outer ring 3 with each footpath
External tension spring 5 is both provided with to 4 opposite position of sealing lip, the inner surface of oil sealing main body is provided with inner ring 2, and inner ring 2 can
It is connected with rotation axis 8, and tubulose is equipped with without relative motion, 3 outer cover of outer ring with inner ring 2 in 8 rotation process of rotation axis
Wear-resistant sleeve 10, outer ring 3 and wear-resistant sleeve relative rotary motion, wear-resistant sleeve 10 are interference fitted with bearing cap 7, without opposite in operation process
Movement.
The present invention designs radial direction dustproof lip 1 and radial seal lip 4 on the outer circumferential surface of oil sealing main body outer ring, oil sealing main body
Outer ring 3 with the horizontal 5 °~8 ° angles so that radial seal lip 4 has certain pretension, simultaneously because the inner circumferential of outer ring 3
Face is being both provided with external tension spring 5 with each 4 opposite position of radial seal lip, can effectively ensure oil sealing in use
Radial seal lip 4 and the tight fit of contact；Further, as outside framework oil seal of the present invention and the continuous of contact are worn,
Oil sealing outer ring 3 with certain angle can also Compensation oil seal and contact wear extent, this outer oil seal body interior is designed with gold
Belong to the skeleton 4 of material, keep seal rigidity and radial tension is provided, the inner ring 2 of oil sealing main body is designed to screw-type endoporus, makes
It must coordinate between oil sealing main body and rotation axis 8 more close.
The effect of radial direction dustproof lip 1 is to prevent extraneous particulate matter from entering on the contact surface of oil sealing and wear-resistant sleeve 10, most
Limits protect oil seal lip to be worn from extraneous particulate matter, therefore the conduct the first line of defence of radial direction dustproof lip 1 is arranged on outside
Side, multiple radial seal lips 4 are axially arranged on the inner side of radial direction dustproof lip 1.
When specifically installing and using, more lip mouth skeleton oil seals of the present invention can be acted in rotation axis 6, on bearing cap 7
Process cavity to be used to wear-resistant sleeve 10 be installed, wear-resistant sleeve 10 is connected with 7 cavity of bearing cap interference fit, and on bearing cap 7 is added
The first top wire hole of work 9, for dismantling or replacing wear-resistant sleeve 10；The second top wire hole 11 is processed on bearing cap 7, for dismantling or more
Change oil envelope.Wherein, bearing cap 7 is being respectively arranged with the first top wire hole 9 on the inside of it positioned at oil sealing main body and 10 position of wear-resistant sleeve
With the second top wire hole 11., can be by the first top wire hole 9 or the second jackscrew when needing to dismantle, replacing oil sealing or wear-resistant sleeve 10
Jackscrew or screw rod are screwed into hole 11, so that outside framework oil seal or wear-resistant sleeve 10 be ejected.
Wear-resistant sleeve 10 is quenched nitrogen treatment, nitridation hardness HV600-HV650；Inner ring 2 is screw-type endoporus, can guarantee that this
Invention oil sealing and 8 tight fit of rotation axis, so as to fulfill in rotary course, oil sealing is in opposing stationary with rotation axis 8；Oil sealing master
3 face of outer ring of body makes radial seal lip 4 have certain pretension with the horizontal 5 °~8 ° angles, and in each radial seal
4 inner surface of lip is designed with external tension spring 5, the radial tension that metallic framework 4 provides in addition, on the one hand ensures skeleton oil of the present invention
The tight fit with wear-resistant sleeve 10 is sealed, on the other hand the wear extent for Compensation oil seal lip and 10 inner ring of wear-resistant sleeve, it is ensured that
The airtight quality of oil sealing and the service life for extending oil sealing and rotation axis.
Claims (6)
1. a kind of more lip mouth skeleton oil seals, including skeleton（6）With oil sealing main body annular in shape, it is characterised in that：Oil sealing main body
Outer surface is provided with outer ring annular in shape（3）, outer ring（3）It is inclined relative to horizontal setting, and outer ring（3）Outer circumferential surface on set
It is equipped with a radial direction dustproof lip（1）With multiple radial seal lips（4）, outer ring（3）Inner peripheral surface with each radial seal lip（4）
Opposite position is both provided with external tension spring（5）, the inner surface of oil sealing main body is provided with inner ring（2）, inner ring（2）Can be with rotation
Shaft（8）It is connected, and rotation axis（8）In rotation process with inner ring（2）Without relative motion.
A kind of 2. more lip mouth skeleton oil seals according to claim 1, it is characterised in that：Multiple radial seal lips（4）Along axis
To being arranged on radial direction dustproof lip（1）The same side.
A kind of 3. more lip mouth skeleton oil seals according to claim 1, it is characterised in that：Outer ring（3）With the angle of horizontal plane
For 5 °~8 °.
A kind of 4. more lip mouth skeleton oil seals according to claim 1, it is characterised in that：Inner ring（2）For screw-type endoporus.
A kind of 5. more lip mouth skeleton oil seals according to claim 1 or 3, it is characterised in that：Outer ring（3）Outer cover is equipped with pipe
The wear-resistant sleeve of shape（10）, wear-resistant sleeve（10）Interference fit is connected with bearing cap（7）.
A kind of 6. more lip mouth skeleton oil seals according to claim 5, it is characterised in that：Bearing cap（7）Inner side is positioned at oil
Seal main body and wear-resistant sleeve（10）Position is respectively arranged with the first top wire hole（9）With the second top wire hole（11）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711363031.3A CN107939977A (en) | 2017-12-18 | 2017-12-18 | A kind of more lip mouth skeleton oil seals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711363031.3A CN107939977A (en) | 2017-12-18 | 2017-12-18 | A kind of more lip mouth skeleton oil seals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107939977A true CN107939977A (en) | 2018-04-20 |
Family
ID=61944608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711363031.3A Pending CN107939977A (en) | 2017-12-18 | 2017-12-18 | A kind of more lip mouth skeleton oil seals |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107939977A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112728093A (en) * | 2021-01-05 | 2021-04-30 | 益航电子股份有限公司 | Rotary machine |
| CN115325170A (en) * | 2022-07-08 | 2022-11-11 | 青海黄河上游水电开发有限责任公司新能源分公司 | An open skeleton oil seal |
| CN116146370A (en) * | 2022-11-30 | 2023-05-23 | 中国石油集团济柴动力有限公司 | Engine crankshaft shaft end sealing structure, engine, vehicle and method |
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| CN207584024U (en) * | 2017-12-18 | 2018-07-06 | 太重煤机有限公司 | A kind of more lip mouth skeleton oil seals |
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2017
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| CN101216109A (en) * | 2008-01-04 | 2008-07-09 | 洛阳轴研科技股份有限公司 | Sealing method for oil fog lubrication electric mainshaft bearing |
| CN101240852A (en) * | 2008-03-20 | 2008-08-13 | 陈军卫 | Multi-lip multi-spring self-lubricating oil seal |
| CN201266862Y (en) * | 2008-10-17 | 2009-07-01 | 永济新时速电机电器有限责任公司 | End cap device of DC motor |
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| CN101900208A (en) * | 2010-07-06 | 2010-12-01 | 太原煤气化股份有限公司焦化厂 | Frame seal of dynamic and static ring type |
| CN104358858A (en) * | 2014-10-21 | 2015-02-18 | 太原理工大学 | Multi-lip framework type oil sealing device |
| CN206571982U (en) * | 2017-03-15 | 2017-10-20 | 中山市迪威变速机械制造有限公司 | One kind has dual spring sealing lip in the same direction, single anti-foul lip outside framework oil seal |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112728093A (en) * | 2021-01-05 | 2021-04-30 | 益航电子股份有限公司 | Rotary machine |
| CN115325170A (en) * | 2022-07-08 | 2022-11-11 | 青海黄河上游水电开发有限责任公司新能源分公司 | An open skeleton oil seal |
| CN116146370A (en) * | 2022-11-30 | 2023-05-23 | 中国石油集团济柴动力有限公司 | Engine crankshaft shaft end sealing structure, engine, vehicle and method |
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