CN201593607U - Polytetrafluoetylene oil seal - Google Patents
Polytetrafluoetylene oil seal Download PDFInfo
- Publication number
- CN201593607U CN201593607U CN2010200224495U CN201020022449U CN201593607U CN 201593607 U CN201593607 U CN 201593607U CN 2010200224495 U CN2010200224495 U CN 2010200224495U CN 201020022449 U CN201020022449 U CN 201020022449U CN 201593607 U CN201593607 U CN 201593607U
- Authority
- CN
- China
- Prior art keywords
- polytetrafluoetylene
- oil
- rubber body
- teflon
- clip
- 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.)
- Expired - Fee Related
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- Sealing With Elastic Sealing Lips (AREA)
Abstract
The utility model relates to the technical field of reciprocating and rotating oil seals, in particular to a polytetrafluoetylene oil seal. The oil seal comprises a frame, a rubber body and a polytetrafluoetylene clip, wherein the rubber body is wrapped on the frame; the polytetrafluoetylene clip and the rubber body are bonded closely; reflow patterns rotating in the same direction with the axle rotating direction are formed on both sides of the polytetrafluoetylene clip; and oil stop blocks preventing oil from exosmosis are arranged in continuous grooves of the reflow patterns. The polytetrafluoetylene oil seal has the advantages of simple structure, easy manufacture and lower cost, improves the flexibility and dynamic following performance of the polytetrafluoetylene clip, and effectively eliminates the potential hazard of static oil leakage.
Description
Technical field
The utility model relates to back and forth and oil seal technique field, especially a kind of teflon seal are used in rotation.
Background technique
Polytetrafluoroethylene (PTFE) oil sealing inwall is carved with the rotation direction thread type backflow line opposite with axle steer; when rotating, axle can produce a deboost; stop the fluid outflow; to push through the fluid that teflon lip sheet spills and go back; this thrust is very high; experiment shows the fluid that can seal 1.0MPa～3.0MPa pressure; rubber oil sea only can be sealed the fluid of 0.03MPa pressure; the abrasion resistance that teflon seal is splendid; be specially adapted to not have oil or few oil condition work; even enable once again after long-term the shutdown; also can have low friction characteristics immediately, rubber oil sea only is fit to that oil condition work is arranged, and teflon seal is specially adapted to high speed rotating; linear velocity can reach 30m/s; nitrile butadiene rubber oil sealing maximum linear velocity 10m/s, the teflon seal maximum operation (service) temperature can reach 350 ℃, 200 ℃ of fluorine rubber oil sealing maximum operation (service) temperatures; the salable water of teflon seal; acids; bases; solvent based; the only salable oil of methane gas etc., rubber oil sea; oils.Existing teflon seal generally is that external diameter is a metal frame, inner metal frame in addition, teflon lip sheet is fitted between two metal frames, and this class teflon seal adopts the single-side square fluxion texture, and the pliability and the dynamic following of teflon lip sheet are relatively poor.When machine stopped not rotate, can just there be the hidden danger of static leak fuel in the lubricant oil in the housing along the groove of backflow line toward exosmosing.
The model utility content
The technical problems to be solved in the utility model is: a kind of teflon seal is provided, and the structure that adopts two-sided backflow line and the oil resistance piece is set has been improved the pliability and the dynamic following of teflon lip sheet, and has effectively eliminated the hidden danger of static leak fuel.
The technological scheme that its technical problem that solves the utility model adopts is: a kind of teflon seal, be assemblied in and prevent on the axial workpiece that fluid from leaking outside, comprise skeleton, rubber body and teflon lip sheet, it is characterized in that: described rubber body is coated on the skeleton, teflon lip sheet and rubber body close adhesion, the two-sided rotation direction thread type backflow line identical with axle steer that be provided with of described teflon lip sheet is provided with the oil resistance piece that stops fluid to exosmose in the continuous groove of backflow line.
The beneficial effects of the utility model are, teflon seal of the present utility model is simple in structure, are easy to make, and cost is lower, has improved the pliability and the dynamic following of teflon lip sheet, and has effectively eliminated the hidden danger of static leak fuel.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a generalized section of the present utility model.
1. skeletons among the figure, 2. rubber body, 3. teflon lip sheet, 4. oil resistance piece.
Embodiment
In conjunction with the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic representation of simplification, basic structure of the present utility model only is described in a schematic way, so it only show the formation relevant with the utility model.
A kind of teflon seal as shown in Figure 1, be assemblied in and prevent on the axial workpiece that fluid from leaking outside, comprise skeleton 1, rubber body 2 and teflon lip sheet 3, rubber body 2 is coated on the skeleton 1, teflon lip sheet 3 and rubber body 2 close adhesion, the two-sided rotation direction thread type backflow line opposite with axle steer that be provided with of teflon lip sheet 3 for preventing static leak fuel, is provided with the oil resistance piece 4 that stops fluid to exosmose in the continuous groove of backflow line.
Teflon lip sheet 3 of the present utility model adopts the compression molding of two-sided backflow line, the pliability and the dynamic following of teflon lip sheet 3 have been improved, axle is when high speed rotating, under the effect of thread type backflow line, produce a backpressure, to push through teflon lip sheet 3 oil spills and go back, oil in the body is thrown away to both sides, improved Sealing Performance of Oil Seal, when machine stops not rotate, lubricant oil in the housing can be along the groove of backflow line toward exosmosing, oil resistance piece 4 on the teflon lip sheet 3 has effectively been eliminated the hidden danger of static leak fuel, and the position of going to oil resistance piece 4 when oil just has been blocked, and has so just avoided static leak fuel.
With above-mentioned foundation desirable embodiment of the present utility model is enlightenment, and by above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this model utility technological thought.
Claims (1)
1. teflon seal, be assemblied in and prevent on the axial workpiece that fluid from leaking outside, comprise skeleton (1), rubber body (2) and teflon lip sheet (3), it is characterized in that: described rubber body (2) is coated on the skeleton (1), teflon lip sheet (3) and rubber body (2) close adhesion, the two-sided rotation direction thread type backflow line opposite with axle steer that be provided with of described teflon lip sheet (3) is provided with the oil resistance piece (4) that stops fluid to exosmose in the continuous groove of described backflow line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200224495U CN201593607U (en) | 2010-01-08 | 2010-01-08 | Polytetrafluoetylene oil seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200224495U CN201593607U (en) | 2010-01-08 | 2010-01-08 | Polytetrafluoetylene oil seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201593607U true CN201593607U (en) | 2010-09-29 |
Family
ID=42775674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010200224495U Expired - Fee Related CN201593607U (en) | 2010-01-08 | 2010-01-08 | Polytetrafluoetylene oil seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201593607U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102173023A (en) * | 2011-01-08 | 2011-09-07 | 山东莱阳市昌誉密封产品有限公司 | One-time compression molding method of modified polytetrafluoroethylene oil seal and special mold thereof |
| CN102979912A (en) * | 2012-12-04 | 2013-03-20 | 揭阳市天诚密封件有限公司 | Threaded lip structural oil seal |
| CN103867723A (en) * | 2012-12-17 | 2014-06-18 | Skf公司 | Seal and method for manufacturing thereof |
-
2010
- 2010-01-08 CN CN2010200224495U patent/CN201593607U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102173023A (en) * | 2011-01-08 | 2011-09-07 | 山东莱阳市昌誉密封产品有限公司 | One-time compression molding method of modified polytetrafluoroethylene oil seal and special mold thereof |
| CN102979912A (en) * | 2012-12-04 | 2013-03-20 | 揭阳市天诚密封件有限公司 | Threaded lip structural oil seal |
| CN103867723A (en) * | 2012-12-17 | 2014-06-18 | Skf公司 | Seal and method for manufacturing thereof |
| CN103867723B (en) * | 2012-12-17 | 2017-09-29 | Skf公司 | Seal and the method for manufacturing seal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100929 Termination date: 20140108 |