CN202937816U - High-temperature dustproof ring - Google Patents
High-temperature dustproof ring Download PDFInfo
- Publication number
- CN202937816U CN202937816U CN2012206400786U CN201220640078U CN202937816U CN 202937816 U CN202937816 U CN 202937816U CN 2012206400786 U CN2012206400786 U CN 2012206400786U CN 201220640078 U CN201220640078 U CN 201220640078U CN 202937816 U CN202937816 U CN 202937816U
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- Prior art keywords
- dustproof
- good
- ring
- lip
- inner ring
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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.)
- Expired - Fee Related
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model discloses a high-temperature dustproof ring which comprises a lip-shaped dustproof inner ring (1). A dustproof outer ring (2) is positioned on the outer wall of the lip-shaped dustproof inner ring (1), and cracks (3) are evenly distributed on the dustproof outer ring (2). The section of the high-temperature dustproof ring integrally uses a lip-shaped dustproof structure with the best dust scraping effect. The dustproof inner ring is made of Teflon fillers which are good in wear resistance, good in high temperature resistance, low in friction coefficient, excellent in sealing performance and good in mechanical strength and have certain assimilative capacity. The dustproof outer ring is made of stainless steel spring steel plates which are strong in mechanical performance, good in elasticity and high-temperature-resistant, and the dustproof outer ring is good in dustproof performance, mechanical performance and high temperature resistance. Furthermore, even if an oil cylinder deflects in a large swing mode, the dustproof inner ring can be also tightly attached to the surface of a piston rod so as to have good extrusion resistance.
Description
Technical field
The utility model relates to a kind of dust ring, particularly a kind of high temperature dustproof circle.
Background technique
Because hydraulic servo oil cylinder is very high for the requirement of performance, depress (pushing to) servo-cylinder in particular for metallurgical hot rolling mill large hydraulic, it not only requires oil cylinder can accurately complete the output of power, also require in-oil cylinder hydraulic oil that inside and outside leakage can not be arranged, cylinder seal frictional force is minimum, the beat value of oil cylinder can not be overproof, and Q-percentile life was greater than 1 year.Oil cylinder is except ensureing necessary machining accuracy, and sealing, guiding just seem especially important.Seal ring is used for anti-inside and outside leakage, and guiding is used for anti-beat value can not be overproof, and dust ring just becomes their basic guarantee.
And existing dust ring generally all can not be desirable satisfy usage requirement, especially metallurgical hot rolling mill large hydraulic is depressed servo-cylinder and is worked under many impurity condition outside hot environment, cylinder.This is because now mostly adopting on material with dust ring is rubber, polyurethane, polytetrafluoroethylene packing etc.; Structurally mostly adopting is lip (as Fig. 3) and combination form (as Fig. 4).
From material analyze rubber, although polyurethane has good wear resistance, elasticity and sealing, will be inferior to polyoxymethylene, polytetrafluoroethylene packing on mechanical strength.Polyoxymethylene will be inferior to polytetrafluoroethylene packing at temperature tolerance, friction factor.
Dustproof from the structural analysis lip is best structure, and its dust blowing, sealing are all best.But it requires material to have good elasticity, has so certain good mechanical properties and resistant to elevated temperatures polytetrafluoroethylene packing material just can't use.Thereby occurred as Fig. 4 combined type dust ring for solving high temperature resistant problem.Combined type dust ring in Fig. 4 is exactly on material, with the rubber of good springiness and polyurethane and high temperature resistant, that mechanical strength is imitated polytetrafluoroethylene packing combine than the Dustproof circle.But it does not structurally adopt the best lip dustproof construction of dust blowing performance, so be easy to allow the outer impurity of cylinder squeeze into oil cylinder from piston rod and between preventing dust.Thereby the life-span is very short.
The model utility content
The purpose of this utility model is, a kind of high temperature dustproof circle is provided, and it has dustproof effect, also has in addition good mechanical property, resistance to high temperature and anti-extrusion performance.
The technical solution of the utility model: a kind of high temperature dustproof circle, comprise the lip inner ring that prevents dust, the outer wall of the dustproof inner ring of lip is provided with the dust ring outer shroud, is evenly equipped with on the dust ring outer shroud and cracks.
In aforesaid high temperature dustproof circle, the material of the dustproof inner ring of described lip is polytetrafluoroethylene packing.Polytetrafluoroethylene packing has that wear-resisting property is good, resistance to high temperature is good, friction factor is low, sealability is good, better mechanical strength is arranged, and the advantage of certain water environment capacity is arranged.
In aforesaid high temperature dustproof circle, the material of dust ring outer shroud is the rustproof spring steel plate.The rustproof spring steel plate has that mechanical property is strong, good springiness and resistant to elevated temperatures advantage.
compared with prior art, the utility model adopts polytetrafluoroethylene packing and rustproof spring steel plate bi-material composition complementary, adopt on the whole the best lip dustproof construction of dust blowing effect at section, the dust ring inner ring adopts wear-resisting property good on material, resistance to high temperature is good, friction factor is low, sealability is good, better mechanical strength is arranged and the polytetrafluoroethylene packing of certain water environment capacity is arranged, the dust ring outer shroud adopts mechanical property strong, good springiness, resistant to elevated temperatures rustproof spring steel plate, adopt this structure to make and the utlity model has good extension/dust discharge performance, mechanical property and resistance to high temperature.
Arrange uniformly on the top of rustproof spring steel plate dust ring outer shroud and crack, even in the situation that large beat occurs oil cylinder still can well help the dust ring inner ring tightly to paste to pay at piston rod surface, thereby improve dirt exclusion capabilities.
Adopt polytetrafluoroethylene packing and rustproof spring steel plate material, the temperature resistant capability of dust ring can be brought up to more than 200 ℃, and the high temperature resistant limit of traditional dust ring is only 150 ℃.
Description of drawings
Fig. 1 is perspective view of the present utility model;
Fig. 2 is the structural representation that partly cuts open of the present utility model;
Fig. 3 is the structural representation of lip dust ring in prior art;
Fig. 4 is the structural representation of combined type dust ring in prior art.
Being labeled as in accompanying drawing: the 1-lip inner ring that prevents dust, 2-dust ring outer shroud, 3-cracks.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described.
Embodiment of the present utility model: as depicted in figs. 1 and 2, a kind of high temperature dustproof circle comprises the lip inner ring 1 that prevents dust, and the outer wall of the dustproof inner ring 1 of lip is provided with dust ring outer shroud 2, is evenly equipped with on dust ring outer shroud 2 and cracks 3.
The dustproof inner ring 1 of lip adopts that wear-resisting property is good, resistance to high temperature is good, friction factor is low, sealability is good, better mechanical strength is arranged and have the polytetrafluoroethylene packing of certain water environment capacity to make, and dust ring outer shroud 2 adopts that mechanical propertys are strong, good springiness, resistant to elevated temperatures rustproof spring steel plate are made.
Claims (3)
1. high temperature dustproof circle comprises the lip inner ring (1) that prevents dust, and it is characterized in that: the prevent dust outer wall of inner ring (1) of lip is provided with dust ring outer shroud (2), and the dust ring outer shroud is evenly equipped with crack (3) on (2).
2. a kind of high temperature dustproof circle according to claim 1 is characterized in that: the prevent dust material of inner ring (1) of described lip is polytetrafluoroethylene packing.
3. a kind of high temperature dustproof circle according to claim 1, it is characterized in that: the material of dust ring outer shroud (2) is the rustproof spring steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206400786U CN202937816U (en) | 2012-11-28 | 2012-11-28 | High-temperature dustproof ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206400786U CN202937816U (en) | 2012-11-28 | 2012-11-28 | High-temperature dustproof ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202937816U true CN202937816U (en) | 2013-05-15 |
Family
ID=48322054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012206400786U Expired - Fee Related CN202937816U (en) | 2012-11-28 | 2012-11-28 | High-temperature dustproof ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202937816U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103399451A (en) * | 2013-08-16 | 2013-11-20 | 深圳市帅映科技有限公司 | Laser projection machine |
-
2012
- 2012-11-28 CN CN2012206400786U patent/CN202937816U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103399451A (en) * | 2013-08-16 | 2013-11-20 | 深圳市帅映科技有限公司 | Laser projection machine |
| CN103399451B (en) * | 2013-08-16 | 2015-09-16 | 深圳市帅映科技有限公司 | A kind of laser projection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130515 Termination date: 20161128 |