CN208686966U - A kind of oil-resistant high-temperature and the strong crankshaft oil seal of leakproofness - Google Patents
A kind of oil-resistant high-temperature and the strong crankshaft oil seal of leakproofness Download PDFInfo
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- CN208686966U CN208686966U CN201821437564.1U CN201821437564U CN208686966U CN 208686966 U CN208686966 U CN 208686966U CN 201821437564 U CN201821437564 U CN 201821437564U CN 208686966 U CN208686966 U CN 208686966U
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- oil
- lip
- leakproofness
- seal lip
- seal
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- Sealing With Elastic Sealing Lips (AREA)
Abstract
Include to reinforce skeleton and sealed colloid the utility model discloses a kind of oil-resistant high-temperature and the strong crankshaft oil seal of leakproofness, reinforces skeleton by Cold pressing die punch forming, the form that sealed colloid be molded with rubber is combined together with reinforcement skeleton；It further include having secondary sealing lip and primary seal lip, the seal lip of secondary sealing lip is circle, and the seal lip of primary seal lip is drawn as horn-like in processing, which is provided with the screw type pump oil line opposite with axle steer.The primary seal lip of the utility model is made of polytetrafluoroethylene material, it is drawn as in processing horn-like, since polytetrafluoroethylene (PTFE) has memory contractility after drawing, the frictional heat generated at work shrinks lip constantly, being not required to spring also can tightly embrace on axis, there is it with the existing gap in axis surface, and abrasion can be compensated.Spiral pump oil line and axis direction of rotation at primary seal lip is on the contrary, fluid outflow can be prevented and to the eccentric insensitive of axis.
Description
Technical field
The utility model relates to engine fittings technical fields, and in particular to one kind is close for in-engine crankshaft oil seal
Sealing.
Background technique
Crankshaft front and rear oil seals are sealing elements very crucial in engine sealing components, it must adapt to in-engine
The high fast-changing environment of mild temperature.Therefore the sealing technique of crankshaft oil seal will become in view of high temperature in engine and its quickly
The factors such as change and lubricating oil family.The design forward direction light weight of engine, small in size, power are sent out with environment-friendly type direction greatly simultaneously
Exhibition, causes sealing surface narrow, this gives the sealing technique of dynamic crankshaft oil seal again, and more stringent requirements are proposed.
Traditional crankshaft oil seal is relatively simple for structure, is usually made of three parts: oil seal body reinforces skeleton and self-locking spiral shell
Revolve spring.Oil seal body material is generally nitrile rubber and fluorubber, although the former is at low cost, temperature tolerance and leakproofness are poor,
Leak case is than more serious.The temperature tolerance and leakproofness of the latter has clear improvement, but cost is too high, and still has General Purpose Rubber
Certain bad general character of material, if wear-resisting property is poor, service life is short, especially sensitive to the bias reaction of axis etc., leakage phenomenon
It is still very universal.To solve the above-mentioned problems, there is an urgent need to design the strong crankshaft oil seal of a kind of oil-resistant high-temperature, leakproofness.
Utility model content
That the technical problem to be solved by the present invention is to provide a kind of wear-resisting properties is good, temperature tolerance is good, high temperature resistant, leakproofness
By force, crankshaft oil seal with long service life.
In order to solve the above technical problems, the utility model adopts the following technical solution: a kind of oil-resistant high-temperature and leakproofness
Strong crankshaft oil seal includes to reinforce skeleton and sealed colloid, reinforces skeleton by Cold pressing die punch forming, it is characterised in that:
The form that the sealed colloid is molded with rubber is combined together with skeleton is reinforced；It further include having secondary sealing lip and primary seal lip,
The seal lip of secondary sealing lip is circle, the seal lip of primary seal lip be drawn as in processing it is horn-like, be provided with
The opposite screw type pump oil line of axle steer；The primary seal lip and secondary sealing lip by pass through after punch forming bonding way with plus
Strong skeleton is combined together.
Further, the reinforcement skeleton is made of cold-rolled steel sheet, with a thickness of 1.00-1.20mm.
Further, the sealed colloid is made of acrylate, outer diameter 102-105mm.
Further, the primary seal lip is made of polytetrafluoroethylene (PTFE), with a thickness of 1.00-1.10mm, and primary seal
The seal lip internal diameter of lip is 76-80mm.
Preferably, the width of the screw type pump oil line in the primary seal lip is 5-7mm.
Further, the secondary sealing lip is made of felt, with a thickness of 1.00-1.10mm.
Preferably, the overall thickness of the crankshaft oil seal is 10-12mm.
Compared with traditional crankshaft oil seal, primary seal lip is made the utility model of polytetrafluoroethylene material, is being processed
When, is drawn as horn-like, and since polytetrafluoroethylene (PTFE) has memory contractility after drawing, the frictional heat generated at work makes
Lip is constantly shunk, so being not required to the help of spring also can tightly embrace on axis, has it with the existing gap in axis surface, again
It can compensation abrasion.Meanwhile the spiral pump oil line that width is 5-7mm is provided at primary seal lip, and its hand of spiral and axis revolve
Turn contrary, fluid outflow can be prevented and to the eccentric insensitive of axis.In addition, the design for reinforcing skeleton increases song
The stiffness and strength of shafting oil envelope, the design of secondary sealing lip effectively prevent the entrance of extraneous dust.The utility model is readily produced,
It being capable of more conventional crankshafts oil sealing temperature tolerance is bad, leakproofness is not strong, service life is short shortcoming.
Detailed description of the invention
Fig. 1 is the utility model section schematic diagram.
In figure, 1 is reinforces skeleton, and 2 be sealed colloid, and 3 be secondary sealing lip, and 4 be primary seal lip, and 5 be screw type pump oil line.
Specific embodiment
In the present embodiment, referring to Fig.1, the oil-resistant high-temperature and the strong crankshaft oil seal of leakproofness include to reinforce skeleton 1
With sealed colloid 2, reinforce form and reinforce bone that skeleton 1 is molded by Cold pressing die punch forming, the sealed colloid 2 with rubber
Frame 1 is combined together；It further include having secondary sealing lip 3 and primary seal lip 4, the seal lip of secondary sealing lip 3 is circle, primary seal lip
4 seal lip is drawn as horn-like in processing, is provided with the screw type pump oil line 5 opposite with axle steer；The master
Sealing lip 4 and secondary sealing lip 3 are combined together by bonding way with skeleton 1 is reinforced by after punch forming.
The reinforcement skeleton 1 is made of cold-rolled steel sheet, with a thickness of 1.00-1.20mm.
The sealed colloid 2 is made of acrylate, outer diameter 102-105mm.
The primary seal lip 4 is made of polytetrafluoroethylene (PTFE), with a thickness of 1.00-1.10mm, and the sealing of primary seal lip 4
Lip internal diameter is 76-80mm.
The width of screw type pump oil line in the primary seal lip 4 is 5-7mm.
The secondary sealing lip 3 is made of felt, with a thickness of 1.00-1.10mm.
The overall thickness of entire crankshaft oil seal is 10-12mm.
The utility model is described in detail above, it is described above, only the preferred embodiment of the utility model and
, when the utility model practical range cannot be limited, i.e., all according to the made equivalent changes and modifications of the application range, it should still belong to this
In utility model covering scope.
Claims (7)
1. a kind of oil-resistant high-temperature and the strong crankshaft oil seal of leakproofness include to reinforce skeleton and sealed colloid, reinforce skeleton by
Cold pressing die punch forming, it is characterised in that: the form that the sealed colloid is molded with rubber is combined together with skeleton is reinforced；
It further include having secondary sealing lip and primary seal lip, the seal lip of secondary sealing lip is circle, and the seal lip of primary seal lip is being processed
When, is drawn as horn-like, is provided with the screw type pump oil line opposite with axle steer；The primary seal lip and secondary sealing lip are equal
By being combined together by bonding way with skeleton is reinforced after punch forming.
2. oil-resistant high-temperature according to claim 1 and the strong crankshaft oil seal of leakproofness, it is characterised in that: the reinforcement bone
Frame is made of cold-rolled steel sheet, with a thickness of 1.00-1.20mm.
3. oil-resistant high-temperature according to claim 1 and the strong crankshaft oil seal of leakproofness, it is characterised in that: the sealant
Body is made of acrylate, outer diameter 102-105mm.
4. oil-resistant high-temperature according to claim 1 and the strong crankshaft oil seal of leakproofness, it is characterised in that: the primary seal
Lip is made of polytetrafluoroethylene (PTFE), and with a thickness of 1.00-1.10mm, and the seal lip internal diameter of primary seal lip is 76-80mm.
5. oil-resistant high-temperature according to claim 1 and the strong crankshaft oil seal of leakproofness, it is characterised in that: the primary seal
The width of screw type pump oil line on lip is 5-7mm.
6. oil-resistant high-temperature according to claim 1 and the strong crankshaft oil seal of leakproofness, it is characterised in that: the secondary sealing
Lip is made of felt, with a thickness of 1.00-1.10mm.
7. oil-resistant high-temperature according to claim 1 and the strong crankshaft oil seal of leakproofness, it is characterised in that: the crankshaft oil seal
Overall thickness be 10-12mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821437564.1U CN208686966U (en) | 2018-09-03 | 2018-09-03 | A kind of oil-resistant high-temperature and the strong crankshaft oil seal of leakproofness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821437564.1U CN208686966U (en) | 2018-09-03 | 2018-09-03 | A kind of oil-resistant high-temperature and the strong crankshaft oil seal of leakproofness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208686966U true CN208686966U (en) | 2019-04-02 |
Family
ID=65887832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821437564.1U Active CN208686966U (en) | 2018-09-03 | 2018-09-03 | A kind of oil-resistant high-temperature and the strong crankshaft oil seal of leakproofness |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208686966U (en) |
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2018
- 2018-09-03 CN CN201821437564.1U patent/CN208686966U/en active Active
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