CN206943428U - A kind of automobile-used PTFE rotary oil seals with backflow slot structure - Google Patents
A kind of automobile-used PTFE rotary oil seals with backflow slot structure Download PDFInfo
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- CN206943428U CN206943428U CN201720364371.7U CN201720364371U CN206943428U CN 206943428 U CN206943428 U CN 206943428U CN 201720364371 U CN201720364371 U CN 201720364371U CN 206943428 U CN206943428 U CN 206943428U
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- spiral
- backflash
- automobile
- primary seal
- rotary oil
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Abstract
It the utility model is related to the automobile-used rotary oil seal that a kind of PTFE is primary seal.The automobile-used rotary oil seal includes metallic framework, rubber bodies and primary seal made of PTFE, the spirally time fluxion texture that some equally distributed turning are formed is designed with the primary seal, characterized in that, the described spiral end for returning fluxion texture is provided with spiral backflash.The beneficial effects of the utility model are：Spiral backflash improves the scavenge oil pump energy-absorbing power of product, spiral backflash improves the resistance to carbonized oil of product, dirty ability, spiral backflash, which can store micro lubricating oil, prevents primary seal lip dry mill lifting product service life, spiral backflash possesses the ability of sealing gas after micro lubricating oil is stored, and is easy to engine to carry out air-leakage test.
Description
Technical field
It the utility model is related to a kind of automobile-used rotary oil seal, more particularly to a kind of automobile-used PTFE rotations with backflow slot structure
Turn oil sealing, belong to oil sealing sealing technical field.
Background technology
Primary seal material used in current automobile-used rotary oil seal, particularly engine, gearbox oil sealing is with fluorine rubber
Based on glue and PTFE material, along with requirement of the change of the external environment conditions such as high speed, high temperature, oil dope to encapsulant
More and more higher, while client generally proposes new requirement to the service life of product, such as by 100,000 kilometers of liftings in 2 years by 5 years
1000000 kilometers or lifelong life-span etc..The excellent high and low temperature resistance of PTFE material, corrosion-resistant in the case of this high request
The advantage that the advantages that property, weatherability, high-lubricity becomes primary seal material has been highlighted, and use in the industry is also got over
Come more extensive.
Mainly there is turning to add using the backflow line processing of primary seal made of PTFE material in present automobile-used rotary oil seal
Work is molded and molding machine-shaping two ways, compared with compression molding mode, although the former is in processing uniformity, excessively program control
System, percent defective, air-leakage test, compression resistance etc. have certain advantage, but Market Feedback but compares in actual use
More serious, its main failure mode shows the oily ability that bears dirty, pumping scarce capacity etc..
Therefore, the combination property for how lifting the line that flowed back in the PTFE oil enveloping structures of turnery processing shaping is whole to lift product
The adaptability of body is very crucial, and has very big market value.The high performance PTFE oil sealings of fluxion texture are returned with turning
Structure will turn into a kind of trend for the Sealing Technology for meeting the high life, particularly the use work in resistance to elevated pressures after improvement
Stronger advantage is shown under condition.
Utility model content
The utility model is for deficiency present on the automobile-used PTFE rotary oil seals structure of existing turnery processing shaping, there is provided
A kind of automobile-used PTFE rotary oil seals with backflow slot structure.
The technical scheme that the utility model solves above-mentioned technical problem is as follows：
It is a kind of have backflow slot structure automobile-used PTFE rotary oil seals, the rotary oil seal include skeleton, rubber bodies and
Primary seal made of PTFE, the skeleton extend in hollow cylindrical and its end to circle centre position, and the rubber bodies are wrapped in gold
Belong to the outside of skeleton, the primary seal is fixed on the inner side of the rubber bodies and extended along the centerline direction of skeleton, the master
The spirally time fluxion texture that some equally distributed turning are formed is designed with sealing, spiral time described fluxion texture
The spiral backflash that end is provided with single head or bull is designed.
Further, the parameter of the spiral backflash is：α >=45 °, 135 ° of β ＜, a=0.1~0.3mm.
Further, the section of the spiral backflash is one kind in triangle, semicircle or grading profile.
Further, the spiral backflash is made up of turning process.
The beneficial effects of the utility model are：
1) spiral backflash adds the pumping ability of product, and the pump oil amount in the unit interval is 5-8 times before improving；
2) spiral backflash adds the ability of the resistance to carbonized oil of product, and the oily experimental lifetime that bears dirty improves 2-3 times；
3) backflash can store the antiwear property of a small amount of fluid lifting product, add the service life of product, phase
Lips abrasion after being improved under same durability experiment (500h) is substantially better than improvement pre-structure；
4) backflash can store the sealing property that a small amount of fluid improves product, be advantageous to the air-leakage test of product.
Brief description of the drawings
Fig. 1 is the schematic view of the mounting position of the utility model oil sealing；
Fig. 2 is the primary seal portion structure schematic diagram of the automobile-used PTFE rotary oil seals of prior art；
Fig. 3 is the spiral backflash parameter schematic diagram of the utility model oil sealing；
Fig. 4 is the utility model embodiment 1-6 structural representation；
Fig. 5 is A portion structure enlarged diagrams in Fig. 4；
Fig. 6 is the structural representation of the utility model embodiment 7；
In Fig. 2-6,1, skeleton；2nd, rubber bodies；3rd, primary seal；4th, fluxion texture is spirally returned；5th, spiral backflash；
Embodiment
Principle of the present utility model and feature are described below in conjunction with example, example is served only for explaining this practicality
It is new, it is not intended to limit the scope of the utility model.
The spiral backflash being previously mentioned in the present embodiment is made by turning process.
Embodiment 1：
As shown in Figure 4,5, a kind of automobile-used PTFE rotary oil seals with fluxion texture, rotary oil seal include skeleton 1, rubber
Primary seal 3 made of colloid 2 and PTFE, skeleton extend in hollow cylindrical and its end to circle centre position, and rubber bodies are wrapped in gold
Belong to the outside of skeleton, primary seal is fixed on the inner side of rubber bodies and extended downwardly along the centerline direction of skeleton, set in primary seal
The single head or multi-head spiral formed in respect of some equally distributed turning goes back to fluxion texture 4, the spiral end for returning fluxion texture
End is provided with spiral backflash 5.
Embodiment 2：
As in Figure 3-5, a kind of automobile-used PTFE rotary oil seals with fluxion texture, rotary oil seal include skeleton 1, rubber
Primary seal 3 made of colloid 2 and PTFE, skeleton extend in hollow cylindrical and its end to circle centre position, and rubber bodies are wrapped in gold
Belong to the outside of skeleton, primary seal is fixed on the inner side of rubber bodies and extended downwardly along the centerline direction of skeleton, set in primary seal
The single head or multi-head spiral formed in respect of some equally distributed turning goes back to fluxion texture 4, the spiral end for returning fluxion texture
End is provided with spiral backflash 5, and the parameter of spiral backflash 5 is α=45 °, β=120 °, a=0.1mm.
Embodiment 3：
As in Figure 3-5, a kind of automobile-used PTFE rotary oil seals with fluxion texture, rotary oil seal include skeleton 1, rubber
Primary seal 3 made of colloid 2 and PTFE, skeleton extend in hollow cylindrical and its end to circle centre position, and rubber bodies are wrapped in gold
Belong to the outside of skeleton, primary seal is fixed on the inner side of rubber bodies and extended downwardly along the centerline direction of skeleton, set in primary seal
The single head or multi-head spiral formed in respect of some equally distributed turning goes back to fluxion texture 4, the spiral end for returning fluxion texture
End is provided with the spiral backflash 5 that turning is formed, and the parameter of spiral backflash 5 is α=30 °, β=80 °, a=0.3mm.
Embodiment 4：
As shown in Figure 4,5, a kind of automobile-used PTFE rotary oil seals with fluxion texture, rotary oil seal include skeleton 1, rubber
Primary seal 3 made of colloid 2 and PTFE, skeleton extend in hollow cylindrical and its end to circle centre position, and rubber bodies are wrapped in gold
Belong to the outside of skeleton, primary seal is fixed on the inner side of rubber bodies and extended downwardly along the centerline direction of skeleton, set in primary seal
The single head or multi-head spiral formed in respect of some equally distributed turning goes back to fluxion texture 4, the spiral end for returning fluxion texture
End is provided with spiral backflash 5, and the section of spiral backflash 5 is triangle.
Embodiment 5：
As shown in Figure 4,5, a kind of automobile-used PTFE rotary oil seals with fluxion texture, rotary oil seal include skeleton 1, rubber
Primary seal 3 made of colloid 2 and PTFE, skeleton extend in hollow cylindrical and its end to circle centre position, and rubber bodies are wrapped in gold
Belong to the outside of skeleton, primary seal is fixed on the inner side of rubber bodies and extended downwardly along the centerline direction of skeleton, set in primary seal
The single head or multi-head spiral formed in respect of some equally distributed turning goes back to fluxion texture 4, the spiral end for returning fluxion texture
End is provided with the spiral backflash 5 that turning is formed, and the section of spiral backflash 5 is semicircle.
Embodiment 6：
As shown in Figure 4,5, a kind of automobile-used PTFE rotary oil seals with fluxion texture, rotary oil seal include skeleton 1, rubber
Primary seal 3 made of colloid 2 and PTFE, skeleton extend in hollow cylindrical and its end to circle centre position, and rubber bodies are wrapped in gold
Belong to the outside of skeleton, primary seal is fixed on the inner side of rubber bodies and extended downwardly along the centerline direction of skeleton, set in primary seal
The single head or multi-head spiral formed in respect of some equally distributed turning goes back to fluxion texture 4, the spiral end for returning fluxion texture
End is provided with spiral backflash 5, and the section of spiral backflash 5 is that gradual change is carried out from triangle to semicircle.
Embodiment 7：
As shown in fig. 6, a kind of automobile-used PTFE rotary oil seals with fluxion texture, rotary oil seal include metallic framework 1,
Rubber bodies 2 and PTFE primary seals 3 form, and skeleton extends in hollow cylindrical and its end to circle centre position, and rubber bodies are wrapped in gold
Belong to the outside of skeleton, primary seal is fixed on the inner side of rubber bodies and upwardly extended along the centerline direction of skeleton, set in primary seal
The single head or multi-head spiral formed in respect of some equally distributed turning returns fluxion texture 4, and the end for returning fluxion texture is provided with
The spiral backflash 5 that turning is formed, the section of spiral backflash is triangle.
Preferred embodiment of the present utility model is the foregoing is only, it is all in this practicality not to limit the utility model
Within new spirit and principle, any modification, equivalent substitution and improvements made etc., guarantor of the present utility model should be included in
Within the scope of shield.
Claims (4)
1. a kind of automobile-used PTFE rotary oil seals with backflow slot structure, the rotary oil seal include skeleton, rubber bodies and PTFE
Manufactured primary seal, the skeleton extend in hollow cylindrical and its end to circle centre position, and the rubber bodies are wrapped in metal bone
The outside of frame, the primary seal are fixed on the inner side of the rubber bodies and extended along the centerline direction of skeleton, the primary seal
On be designed with that some equally distributed turning are formed spirally return fluxion texture, it is characterised in that described spiral backflow
The spiral backflash that the end of line structure is provided with single head or bull is designed.
2. automobile-used PTFE rotary oil seals according to claim 1, it is characterised in that the parameter of the spiral backflash
For：α >=45 °, 135 ° of β ＜, a=0.1~0.3mm.
3. automobile-used PTFE rotary oil seals according to claim 1, it is characterised in that the section of the spiral backflash is
One kind in triangle, semicircle or grading profile.
4. automobile-used PTFE rotary oil seals according to claim 1 or 2, it is characterised in that the spiral backflash is by car
Technique is cut to be made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720364371.7U CN206943428U (en) | 2017-04-10 | 2017-04-10 | A kind of automobile-used PTFE rotary oil seals with backflow slot structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720364371.7U CN206943428U (en) | 2017-04-10 | 2017-04-10 | A kind of automobile-used PTFE rotary oil seals with backflow slot structure |
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| Publication Number | Publication Date |
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| CN206943428U true CN206943428U (en) | 2018-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720364371.7U Active CN206943428U (en) | 2017-04-10 | 2017-04-10 | A kind of automobile-used PTFE rotary oil seals with backflow slot structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109027236A (en) * | 2018-09-17 | 2018-12-18 | 嘉科（安徽）密封技术有限公司 | A kind of PTFE oil sealing with protective case |
| CN110966407A (en) * | 2019-12-23 | 2020-04-07 | 西北橡胶塑料研究设计院有限公司 | Self-tightening combined oil seal for liquid oxygen and liquid methane delivery pump |
-
2017
- 2017-04-10 CN CN201720364371.7U patent/CN206943428U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109027236A (en) * | 2018-09-17 | 2018-12-18 | 嘉科（安徽）密封技术有限公司 | A kind of PTFE oil sealing with protective case |
| CN110966407A (en) * | 2019-12-23 | 2020-04-07 | 西北橡胶塑料研究设计院有限公司 | Self-tightening combined oil seal for liquid oxygen and liquid methane delivery pump |
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