CN208871032U - A kind of PTFE seal lips - Google Patents
A kind of PTFE seal lips Download PDFInfo
- Publication number
- CN208871032U CN208871032U CN201821517038.6U CN201821517038U CN208871032U CN 208871032 U CN208871032 U CN 208871032U CN 201821517038 U CN201821517038 U CN 201821517038U CN 208871032 U CN208871032 U CN 208871032U
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- Prior art keywords
- drive back
- lips
- back thread
- oil drive
- ptfe
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- 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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Abstract
The utility model proposes a kind of PTFE seal lips, the lips including structure annular in shape, lips inside is equipped with main lip, and compacting helicla flute forms oil drive back thread on main lip inner wall, and using arc transition connection between two threads of the arbitrary neighborhood of oil drive back thread.It is excessive that circular arc is directlyed adopt between two threads of arbitrary neighborhood of the utility model oil drive back thread, traditional screw pitch 0.35mm is revised as 0.5mm, it can achieve effective sealing, and this kind of structure processing is more simple, stress concentration is reduced simultaneously, reduce difficulty of processing under the premise of meeting leakproofness, improves sheet of PTFE and die life.
Description
Technical field
The utility model relates to PTFE oil seal technique field more particularly to a kind of PTFE seal lips.
Background technique
Various industries are just widely used in since PTFE material comes out, nowadays oil sealing industry is also in PTFE material
Under the influence of achieve revolutionary progress, sheet of PTFE structure also has a tremendous influence to oil sealing performance, however sheet of PTFE
Processing is very difficult, therefore the design of sheet of PTFE structure is also particularly important.
Traditional sheet of PTFE cross sectional shape is that circular arc is attached by straight line, and screw pitch 0.35mm passes through screw processing, shape
At oil drive back thread, achieve the effect that pump is inhaled, to play the role of sealing.However this structure is not easy to be processed, straight transitions can be
Stress is generated in sheet of PTFE and mold processing to concentrate, and reduces the service life of molds and products.
Utility model content
Based on technical problem present in background technique, the utility model proposes a kind of PTFE seal lips.
The utility model proposes a kind of PTFE seal lips, the lips including structure annular in shape is equipped with master on the inside of lips
Lip, compacting helicla flute forms oil drive back thread on main lip inner wall, and using circle between two threads of the arbitrary neighborhood of oil drive back thread
Arc transition connection.
Preferably, the screw pitch of oil drive back thread is 0.45-0.55mm.
Preferably, the screw pitch of oil drive back thread is 0.5mm.
The utility model proposes a kind of PTFE seal lips, directly adopt between two threads of arbitrary neighborhood of oil drive back thread
It is excessive with circular arc, traditional screw pitch 0.35mm is revised as 0.5mm, can achieve effective sealing, and this kind of structure processing
It is more simple, while stress concentration is reduced, difficulty of processing is reduced under the premise of meeting leakproofness, improves sheet of PTFE and mould
Has service life.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for sealing lips in the prior art；
Fig. 2 be the utility model proposes a kind of PTFE seal lips structural schematic diagram.
Specific embodiment
Referring to Fig. 2, the utility model proposes a kind of PTFE seal lips, the lips 1 including structure annular in shape, in lips 1
Side is equipped with main lip 2, and compacting helicla flute forms oil drive back thread 3, and two screw threads of the arbitrary neighborhood of oil drive back thread 3 on main 2 inner wall of lip
It is connected between tooth 4 using arc transition, the screw pitch of oil drive back thread 3 is 0.5mm.
Directly adopt that circular arc is excessive between two threads 4 of arbitrary neighborhood of the utility model oil drive back thread 3, by traditional spiral shell
It is revised as 0.5mm away from 0.35mm, can achieve effective sealing, and this kind of structure processing is more simple, while reducing and answering
Power is concentrated, and difficulty of processing is reduced under the premise of meeting leakproofness, improves sheet of PTFE and die life.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this
Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model
Within enclosing.
Claims (3)
1. a kind of PTFE seal lips, which is characterized in that the lips (1) including structure annular in shape, lips (1) inside are equipped with main lip
Mouthful (2), compacting helicla flute forms oil drive back thread (3) on main lip (2) inner wall, and two threads of the arbitrary neighborhood of oil drive back thread (3)
(4) it is connected between using arc transition.
2. PTFE seal lips according to claim 1, which is characterized in that the screw pitch of oil drive back thread (3) is 0.45-
0.55mm。
3. PTFE seal lips according to claim 1, which is characterized in that the screw pitch of oil drive back thread (3) is 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821517038.6U CN208871032U (en) | 2018-09-17 | 2018-09-17 | A kind of PTFE seal lips |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821517038.6U CN208871032U (en) | 2018-09-17 | 2018-09-17 | A kind of PTFE seal lips |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208871032U true CN208871032U (en) | 2019-05-17 |
Family
ID=66467857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821517038.6U Active CN208871032U (en) | 2018-09-17 | 2018-09-17 | A kind of PTFE seal lips |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208871032U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108999978A (en) * | 2018-09-17 | 2018-12-14 | 嘉科（安徽）密封技术有限公司 | A kind of PTFE seal lips |
-
2018
- 2018-09-17 CN CN201821517038.6U patent/CN208871032U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108999978A (en) * | 2018-09-17 | 2018-12-14 | 嘉科（安徽）密封技术有限公司 | A kind of PTFE seal lips |
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