CN202851955U - Combination sealing ring - Google Patents
Combination sealing ring Download PDFInfo
- Publication number
- CN202851955U CN202851955U CN2012204962204U CN201220496220U CN202851955U CN 202851955 U CN202851955 U CN 202851955U CN 2012204962204 U CN2012204962204 U CN 2012204962204U CN 201220496220 U CN201220496220 U CN 201220496220U CN 202851955 U CN202851955 U CN 202851955U
- Authority
- CN
- China
- Prior art keywords
- ring
- dustproof
- shape circle
- dust ring
- seal ring
- 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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Abstract
The utility model discloses a combination sealing ring which comprises a dustproof ring and multiple O-shaped rings, wherein a protruded dustproof surface is arranged inside the top end of the dustproof ring, and the O-shaped rings are arranged on the periphery of the dustproof ring in a sleeved mode. Specifically, the combination sealing ring is simple in whole structure, and small in required installing space. The dustproof surface on the dustproof ring is protruded inwards so as to have a good dustproof function, and effectively avoid dust particles from entering into and polluting a guide sleeve by the dustproof ring. Meanwhile, the O-shaped rings provide pretightening force for the dustproof ring, and have a sealing function.
Description
Technical field
The utility model relates to a kind of combined seal ring of and sealing dustproof for guide sleeve.
Background technique
Guide sleeve works to support and guarantee piston in hydraulic cylinder and iron and steel coaxality in oil hydraulic cylinder.Hydraulic cylinder piston and guide sleeve are friction pairs, and piston and guide sleeve need to keep sealing state in long-term to-and-fro motion process, satisfy the requirement of production technology to guarantee that oil hydraulic cylinder can work.Therefore, the staff arranges a seal ring at described guide sleeve, is in sealing state to guarantee guide sleeve, but because in the process that works long hours of guide sleeve, have strongly adherent dust granule and enter in the guide sleeve by seal ring, affect the normal use of guide sleeve.
Therefore, how avoiding dust granule to enter guide sleeve is the technical problem that those skilled in the art need to be resolved hurrily.
The model utility content
The utility model provides a kind of combined seal ring, to overcome the problem that dust granule enters guide sleeve in the prior art by seal ring.
For solving the problems of the technologies described above, the utility model provides a kind of combined seal ring, comprises dust ring and a plurality of O shape circle, and the inboard, top of described dust ring is provided with the dustproof face of a projection, and described O shape snare is located at the periphery of described dust ring.
As preferably, described O shape circle comprises O shape circle and the 2nd O shape circle, and the outside of described dust ring is provided with a Baltimore groove, and described O shape circle is located in the described Baltimore groove, and described the 2nd O shape is enclosed the bottom that is arranged at described dust ring.
As preferably, the inboard, bottom of described dust ring also is provided with sealing lip.
As preferably, described dust ring is made by teflon.
As preferably, described O shape circle is made by nitrile rubber.
As preferably, described O shape circle is made by fluorine rubber.
Compared with prior art, the utlity model has following advantage: described combined seal ring comprises dust ring and O shape circle, and overall structure is simple, and the installing space that needs is little; Because the inboard, top of described dust ring is provided with the dustproof face of projection, can play good dustproof effect again, avoid dust granule to enter into guide sleeve by dust ring and pollute guide sleeve and oil hydraulic cylinder.In addition, O shape is enclosed pretightening force to dust ring is provided, and seals.
Description of drawings
Fig. 1 is the cross-sectional schematic of combined seal ring in the utility model one specific embodiment;
Fig. 2 is the structural representation of combined seal ring in the utility model one specific embodiment.
As in: the dustproof face of 10-dust ring, 11-, 12-sealing lip, 20-O shape circle, 21-the one O shape circle, 22-the 2nd O shape circle.
Embodiment
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent more, below in conjunction with accompanying drawing embodiment of the present utility model is described in detail.It should be noted that, the utility model accompanying drawing all adopts the form of simplification and all uses non-accurately ratio, only in order to convenient, aid illustration the utility model embodiment's purpose lucidly.
Please refer to Fig. 1, and in conjunction with Fig. 2, described combined seal ring comprises dust ring 10 and a plurality of O shape circle 20, the inboard, top of described dust ring 10 is provided with the dustproof face 11 of a projection, and described O shape circle 20 is set in the periphery of described dust ring 10.Concrete, the overall structure of described combined seal ring is simple, and the installing space that needs is little, and dustproof face 11 inwardly protrudings on the described dust ring 10, plays good dustproof effect, effectively avoids dust granule to enter by dust ring 10 and pollutes guide sleeve.Simultaneously, O shape circle 20 provides pretightening force for dust ring 10, seals.
Please continue to see figures.1.and.2, described O shape circle 20 comprises O shape circle the 21 and the 2nd O shape circle 22, the outside of described dust ring 10 is provided with a Baltimore groove (not indicating among the figure), and described O shape circle 21 is located in the described Baltimore groove, and described the 2nd O shape circle 22 is arranged at the bottom of described dust ring 10.Baltimore groove simple in structure do not take usage space, and can prevent that dust granule from entering in the O shape circle, has good dust-proof effect.
Please refer to Fig. 1 ~ 2, as preferably, the inboard, bottom of described dust ring 10 also is provided with a sealing lip 12, described sealing lip 12 its seal actions, reciprocating at combined seal ring especially, described dust ring 10 is stressed and does the time spent, and described sealing lip 12 is close to guide sleeve, avoids dust ring 10 to produce distortion because pressure is excessive and causes poor sealing.
Please continue with reference to Fig. 1 ~ 2, as preferably, described dust ring 10 is made by teflon.Teflon has antiwear characteristic and low coefficient of friction, can adapt to comparatively harsh working environment.In addition, teflon also has good chemical stability, still can work under the high temperature and high pressure condition, and therefore, combined seal ring of the present utility model still can play seal action at condition of high voltage.
In the present embodiment, described O shape circle 20 is made by nitrile rubber.Nitrile butadiene rubber has good oil resistance, wear resistance and tightness, therefore, can play good seal action and long service life.
As preferably, described O shape circle 20 also can be made by fluorine rubber.Therefore the characteristic that fluorine rubber has equally is high temperature resistant, oil resistant and the medicine of anti-the number of chemical corrode, can keep good sealing characteristics under various environment.
In sum, combined seal ring of the present utility model comprises dust ring 10 and a plurality of O shape circle 20, and the inboard, top of described dust ring 10 is provided with the dustproof face 11 of a projection, and described O shape circle 20 is set in the periphery of described dust ring 10.Concrete, the overall structure of described combined seal ring is simple, and the installing space that needs is little, and dustproof face 11 inwardly protrudings on the described dust ring 10, plays good dustproof effect, effectively avoids dust granule to enter by dust ring 10 and pollutes guide sleeve.Simultaneously, O shape circle 20 provides pretightening force for dust ring 10, seals.
Obviously, those skilled in the art can carry out various changes and modification to model utility and not break away from spirit and scope of the present utility model.Like this, if of the present utility model these revise and modification belongs within the scope of the utility model claim and equivalent technologies thereof, then the utility model also is intended to comprise these change and modification.
Claims (6)
1. a combined seal ring is characterized in that, comprises dust ring and a plurality of O shape circle, and the inboard, top of described dust ring is provided with the dustproof face of a projection, and described O shape snare is located at the periphery of described dust ring.
2. combined seal ring as claimed in claim 1, it is characterized in that, described O shape circle comprises O shape circle and the 2nd O shape circle, and the outside of described dust ring is provided with a Baltimore groove, described O shape circle is located in the described Baltimore groove, and described the 2nd O shape circle is arranged at the bottom of described dust ring.
3. combined seal ring as claimed in claim 1 is characterized in that, the inboard, bottom of described dust ring also is provided with sealing lip.
4. combined seal ring as claimed in claim 1 is characterized in that, described dust ring is made by teflon.
5. combined seal ring as claimed in claim 1 is characterized in that, described O shape circle is made by nitrile rubber.
6. combined seal ring as claimed in claim 1 is characterized in that, described O shape circle is made by fluorine rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204962204U CN202851955U (en) | 2012-09-26 | 2012-09-26 | Combination sealing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204962204U CN202851955U (en) | 2012-09-26 | 2012-09-26 | Combination sealing ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202851955U true CN202851955U (en) | 2013-04-03 |
Family
ID=47983160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012204962204U Expired - Fee Related CN202851955U (en) | 2012-09-26 | 2012-09-26 | Combination sealing ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202851955U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105927739A (en) * | 2016-05-25 | 2016-09-07 | 中国第汽车股份有限公司无锡油泵油嘴研究所 | Sealing device for fuel pump |
| CN109404537A (en) * | 2018-09-27 | 2019-03-01 | 浙江省仙居县中兴橡胶密封件有限公司 | A kind of two-way dustband of polytetrafluoroethylene (PTFE) |
-
2012
- 2012-09-26 CN CN2012204962204U patent/CN202851955U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105927739A (en) * | 2016-05-25 | 2016-09-07 | 中国第汽车股份有限公司无锡油泵油嘴研究所 | Sealing device for fuel pump |
| CN105927739B (en) * | 2016-05-25 | 2017-11-03 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | A kind of fuel oil Sealing used for pump |
| CN109404537A (en) * | 2018-09-27 | 2019-03-01 | 浙江省仙居县中兴橡胶密封件有限公司 | A kind of two-way dustband of polytetrafluoroethylene (PTFE) |
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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: 20130403 Termination date: 20160926 |