CN202327117U - Dust ring - Google Patents
Dust ring Download PDFInfo
- Publication number
- CN202327117U CN202327117U CN2011204605310U CN201120460531U CN202327117U CN 202327117 U CN202327117 U CN 202327117U CN 2011204605310 U CN2011204605310 U CN 2011204605310U CN 201120460531 U CN201120460531 U CN 201120460531U CN 202327117 U CN202327117 U CN 202327117U
- Authority
- CN
- China
- Prior art keywords
- annular ring
- ring
- dust
- utility
- circle
- 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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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model relates to a dust ring, which comprises an annular ring, wherein an inner periphery of the annular ring is provided with a circle of inner dustproof lips inclined towards an axial center along a radial direction; the middle part of the annular ring is provided with a circle of outer dustproof lips inclined towards an opposite axial direction along the radial direction; and the angle of the outer dustproof lips inclined towards the opposite axial direction is 15 degrees to 20 degrees. According to the dust ring, the middle part of the annular ring is provided with the circle of outer dustproof lips inclined towards the opposite axial direction along the radial direction, so that pollutants can be effectively prevented from entering into a hydraulic cylinder from lip openings and a groove bottom, the effectiveness of sealing of a piston rod is maintained, and the quality problem of external leakage of the piston rod is prevented.
Description
Technical field
The utility model relates to a kind of dust ring, and particularly a kind of dust ring that is used on the hydraulic cylinder piston rod belongs to oil hydraulic cylinder component technical field.
Background technique
Oil hydraulic cylinder is the important executive component of constructional engineering machinery, and its quality of stability directly affects the working efficiency and the reliability of constructional engineering machinery.But the quality problems of piston rod external leakage in use often take place in oil hydraulic cylinder, and the main cause that causes the hydraulic cylinder piston rod external leakage is that rod seal was lost efficacy.The main sealing configuration of piston rod is single lip dust ring+low pressure seal (Y shape circle) ten high pressure sealings (axle is with the combination envelopes) at present; Nowadays oneself can not adapt to the needs of engineering machinery single lip dust ring; Basically lose dust reduction capability; Pollutant is got into from piston rod, cause the rod seal wear out failure, so that the quality problems of piston rod external leakage occur.
The model utility content
The utility model purpose is the dust ring that a kind of good dustproof effect is provided for the deficiency that overcomes existing technology.
For achieving the above object; The technological scheme that the utility model adopts is: a kind of dust ring; Comprise an annular ring; The inner periphery of annular ring is provided with the interior dust excluder lips that a circle radially tilts towards the axle center, and the middle part of annular ring is provided with the outer dust excluder lips that a circle radially tilts towards the axial opposed direction.
Preferably, said outer dust excluder lips is 15 °～20 ° towards the angle that the axial opposed direction tilts.
Because the utilization of technique scheme, the utility model compared with prior art has advantage:
The dust ring of the utility model; Because the middle part of annular ring is provided with the outer dust excluder lips that a circle radially tilts towards the axial opposed direction; Can effectively stop pollutant from lip and the bottom land oil hydraulic cylinder of entering; The validity that has kept rod seal prevents the quality problems of piston rod external leakage.
Description of drawings
Below in conjunction with accompanying drawing the utility model technological scheme is described further:
Accompanying drawing 1 is the structure sectional view of the dust ring of the utility model;
Wherein: 1, annular ring; 2, interior dust excluder lips; 3, outer dust excluder lips.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is done further to specify.
The described a kind of dust ring of the utility model shown in accompanying drawing 1; Comprise an annular ring 1; The inner periphery of annular ring 1 is provided with the interior dust excluder lips 2 that a circle radially tilts towards the axle center, and the middle part of annular ring 1 is provided with the outer dust excluder lips 3 that a circle radially tilts towards the axial opposed direction; Said outer dust excluder lips 3 is 15 °～20 ° towards the angle that the axial opposed direction tilts.
Because the utilization of technique scheme, the utility model compared with prior art has advantage:
The dust ring of the utility model; Because the middle part of annular ring is provided with the outer dust excluder lips that a circle radially tilts towards the axial opposed direction; Can effectively stop pollutant from lip and the bottom land oil hydraulic cylinder of entering; The validity that has kept rod seal prevents the quality problems of piston rod external leakage.
Below only be the concrete exemplary applications of the utility model, the protection domain of the utility model is not constituted any limitation.All employing equivalents or equivalence are replaced and the technological scheme of formation, or any to move mode dull and stereotyped described in the utility model, all drop within the utility model rights protection scope.
Claims (2)
1. a dust ring comprises an annular ring, and the inner periphery of annular ring is provided with the interior dust excluder lips that a circle radially tilts towards the axle center, it is characterized in that: the middle part of annular ring is provided with the outer dust excluder lips that a circle radially tilts towards the axial opposed direction.
2. dust ring according to claim 1 is characterized in that: said outer dust excluder lips is 15 °～20 ° towards the angle that the axial opposed direction tilts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204605310U CN202327117U (en) | 2011-11-19 | 2011-11-19 | Dust ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204605310U CN202327117U (en) | 2011-11-19 | 2011-11-19 | Dust ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202327117U true CN202327117U (en) | 2012-07-11 |
Family
ID=46439096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204605310U Expired - Fee Related CN202327117U (en) | 2011-11-19 | 2011-11-19 | Dust ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202327117U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109027238A (en) * | 2018-09-27 | 2018-12-18 | 安徽龙川橡塑科技有限公司 | A kind of framework dustproof loop |
-
2011
- 2011-11-19 CN CN2011204605310U patent/CN202327117U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109027238A (en) * | 2018-09-27 | 2018-12-18 | 安徽龙川橡塑科技有限公司 | A kind of framework dustproof loop |
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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: 20120711 Termination date: 20121119 |