CN201359080Y - Piston ring - Google Patents
Piston ring Download PDFInfo
- Publication number
- CN201359080Y CN201359080Y CNU2009201061276U CN200920106127U CN201359080Y CN 201359080 Y CN201359080 Y CN 201359080Y CN U2009201061276 U CNU2009201061276 U CN U2009201061276U CN 200920106127 U CN200920106127 U CN 200920106127U CN 201359080 Y CN201359080 Y CN 201359080Y
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- piston ring
- ring
- pressure
- compensating groove
- pressure compensating
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- Expired - Lifetime
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Abstract
The embodiment of utility model provides a piston ring for oil-free compressor. The piston ring is provided with a pressure unloading groove on the ring body of the piston ring. As the pressure unloading groove is arranged on the ring body of the piston ring, pressure can be effectively relieved under operation state so that abrasion on piston ring due to increased pressure is reduced; the service life of piston ring is improved.
Description
Technical field
The utility model relates to piston ring, relates in particular to a kind of piston ring that is applied to oilless compressor.
Background technique
Oilless compressor grows up having on the oily machine basis, last century the seventies along with development of material technology, the piston ring that the selflubricating nonmetallic material are made progressively is applied to the oilless compressor field.The effect of piston ring promptly realizes sealing, and sealing load is to be produced by the pressure difference that forms before and after the piston ring.It is one of important part of compressor, and its performance quality directly influences sealing, reliability, Economy and the working life of compressor.
The material of preparation piston ring mainly is to be most widely used the material into PTFE (teflon) at present, but because pure PTFE thermal conductivity is low, the thermal expansion coefficient height, mechanical strength is not high, can not be as Sealing, be used further to prepare piston ring so half adds therein after improving its performance behind the packing, the kind of packing commonly used has raw materials such as graphite, carbon fiber, copper powder, glass, molybdenum disulfide.Piston ring not only will be selected suitable material, also needs to determine structure, size and the fit up gap of good piston ring simultaneously.
Existing oilless compressor piston ring structure form is varied, has that integral finish is ring-like, the distinguish type; Back pressure ring and no back pressure ring are arranged; Tension link and strainless ring are arranged; Structure such as monocycle and dicyclo, the integral finish ring is because installation, easy to operate obtains being extensive use of of non-lubricated air compressor in recent years.The structure of the piston ring of open annular as Figure 1-3, trip ring is divided into mouth, straight cut, the three kinds of forms of angular cut of taking, it is best to take mouthful sealing effect, but it is low to take mouthful place's intensity during work, fragile, straight cut is easy to make but the amount of leakage maximum, and angular cut need be considered angle of bevel between between the two during design.But down owing to do not have the structure of unloading pressure load, there is the problem that piston ring scuffing is fast, working life is short in the piston ring of this existing open annular in working order.
Summary of the invention
Based on above-mentioned existing in prior technology problem, the utility model embodiment provides a kind of oilless compressor piston ring, can solve the existing piston ring in working order down, and is big because of bearing pressure, causes quick abrasion short problem in working life.
The utility model is embodiment be achieved through the following technical solutions:
The utility model mode of execution provides a kind of piston ring, and the pressure compensating groove is set on the ring body of this piston ring.
Described pressure compensating groove is a groove shape structure, around being arranged on the ring body.
The cell body opening of described pressure compensating groove is arranged on the outer surface of ring body.
Be provided with the through hole of balance pressure in the described pressure compensating groove.
Through hole in the described pressure compensating groove is a plurality of, is uniformly set in the pressure compensating groove.
The technological scheme that is provided by above-mentioned the utility model mode of execution as can be seen, in the utility model mode of execution by the pressure compensating groove is set on the ring body of piston ring, under working condition, effective unloading pressure, reduce to prolong the life-span of piston ring because of pressure increases the wearing and tearing that piston ring is caused.
Description of drawings
The structural representation of the fibulae type piston ring that Fig. 1 provides for prior art;
The structural representation of the notch-cut type piston ring that Fig. 2 provides for prior art;
The structural representation of the angular cut formula piston ring that Fig. 3 provides for prior art;
The structural representation of the piston ring that Fig. 4 provides for the utility model embodiment;
The structural representation of facing of the piston ring that provides for the utility model embodiment is provided Fig. 5.
Embodiment
The utility model embodiment provides a kind of oilless compressor piston ring, can be used on the oilless compressor, and this piston ring is provided with the pressure compensating groove on the ring body of this piston ring.Pressure by the pressure compensating groove on the ring body can the unloaded operation state produces down reduces wearing and tearing, prolongs the working life of piston ring.
For ease of understanding, mode of execution of the present utility model is described further below in conjunction with the drawings and specific embodiments.
Embodiment
Present embodiment provides a kind of oilless compressor piston ring, mainly is used on the oilless compressor, and shown in Fig. 3,4, this piston ring is to be provided with pressure compensating groove 2 on ring body 1.The pressure that can the unloaded operation state produces down by the pressure compensating groove 2 that is provided with is to the influence of piston ring, reduces the wearing and tearing that cause greatly because of pressure, prolongs the working life of piston ring.
Specifically, pressure compensating groove 2 on the ring body 2 of above-mentioned piston ring can be groove shape structure, around being arranged on the ring body 1, the cell body opening end of pressure compensating groove 2 can be arranged on the outer surface of ring body 1, and the through hole 3 of balance pressure can be set in this pressure compensating groove 2, through hole 3 can be provided with a plurality of, and is evenly distributed in the pressure compensating groove 2.What Fig. 3 illustrated is that ring body is divided into two-part diagonal cut joint piston ring, is equipped with pressure compensating groove 2 on two-part ring body, and in the pressure compensating groove 2 of every part ring body three through holes 3 is set (seeing shown in Figure 4).The piston ring of this band pressure compensating groove structure, can well solve the fast problem of piston ring scuffing, because the pressure compensating groove of this piston ring, make axial unbalanced force reduce to minimum degree, and the through hole in the pressure compensating groove also can balance pressure, in use, the operating mode of piston ring is improved greatly, leakage and surface abrasion obviously reduce, and reach to prolong the piston ring effect in working life.
The above; it only is the preferable embodiment of the utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claims.
Claims (5)
1, a kind of piston ring is characterized in that, the pressure compensating groove is set on the ring body of this piston ring.
2, piston ring according to claim 1 is characterized in that, described pressure compensating groove is a groove shape structure, around being arranged on the ring body.
3, piston ring according to claim 1 is characterized in that, the cell body opening of described pressure compensating groove is arranged on the outer surface of ring body.
4, piston ring according to claim 1 and 2 is characterized in that, is provided with the through hole of balance pressure in the described pressure compensating groove.
5, piston ring according to claim 4 is characterized in that, the through hole in the described pressure compensating groove is a plurality of, is uniformly set in the pressure compensating groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201061276U CN201359080Y (en) | 2009-03-11 | 2009-03-11 | Piston ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201061276U CN201359080Y (en) | 2009-03-11 | 2009-03-11 | Piston ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201359080Y true CN201359080Y (en) | 2009-12-09 |
Family
ID=41424844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009201061276U Expired - Lifetime CN201359080Y (en) | 2009-03-11 | 2009-03-11 | Piston ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201359080Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742284A (en) * | 2013-12-31 | 2014-04-23 | 江苏南铸科技股份有限公司 | Piston ring |
| CN103807143A (en) * | 2014-02-28 | 2014-05-21 | 成都大漠石油机械有限公司 | Long-service-life piston head |
| CN104160189A (en) * | 2012-02-08 | 2014-11-19 | 马勒国际公司 | Piston ring for an internal combustion engine |
| CN105814311A (en) * | 2013-12-26 | 2016-07-27 | 株式会社日立产机系统 | Piston ring and compressor using same |
| CN107636288A (en) * | 2015-06-19 | 2018-01-26 | 联邦摩高布尔沙伊德公司 | Piston ring with channel sealing member |
| CN108799493A (en) * | 2018-06-08 | 2018-11-13 | 安徽共青机电装备制造有限公司 | A kind of non-lubricated compressor piston ring |
| CN108799055A (en) * | 2018-06-08 | 2018-11-13 | 安徽共青机电装备制造有限公司 | A kind of non-lubricated compressor guide ring |
| CN109488764A (en) * | 2018-12-25 | 2019-03-19 | 四川大川压缩机有限责任公司 | A kind of piston ring suitable for High Pressure Difference |
| CN110799783A (en) * | 2017-06-19 | 2020-02-14 | 辉门布尔沙伊德有限公司 | Oil scraping piston ring |
-
2009
- 2009-03-11 CN CNU2009201061276U patent/CN201359080Y/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104160189A (en) * | 2012-02-08 | 2014-11-19 | 马勒国际公司 | Piston ring for an internal combustion engine |
| CN104160189B (en) * | 2012-02-08 | 2017-04-12 | 马勒国际公司 | Piston ring for an internal combustion engine |
| CN105814311A (en) * | 2013-12-26 | 2016-07-27 | 株式会社日立产机系统 | Piston ring and compressor using same |
| CN105814311B (en) * | 2013-12-26 | 2018-01-12 | 株式会社日立产机系统 | Piston ring and use its compressor |
| CN103742284A (en) * | 2013-12-31 | 2014-04-23 | 江苏南铸科技股份有限公司 | Piston ring |
| CN103807143A (en) * | 2014-02-28 | 2014-05-21 | 成都大漠石油机械有限公司 | Long-service-life piston head |
| CN107636288A (en) * | 2015-06-19 | 2018-01-26 | 联邦摩高布尔沙伊德公司 | Piston ring with channel sealing member |
| CN107636288B (en) * | 2015-06-19 | 2019-08-20 | 联邦摩高布尔沙伊德公司 | Piston ring with channel sealing member |
| CN110799783A (en) * | 2017-06-19 | 2020-02-14 | 辉门布尔沙伊德有限公司 | Oil scraping piston ring |
| CN108799493A (en) * | 2018-06-08 | 2018-11-13 | 安徽共青机电装备制造有限公司 | A kind of non-lubricated compressor piston ring |
| CN108799055A (en) * | 2018-06-08 | 2018-11-13 | 安徽共青机电装备制造有限公司 | A kind of non-lubricated compressor guide ring |
| CN108799493B (en) * | 2018-06-08 | 2020-01-07 | 安徽共青机电装备制造有限公司 | Piston ring for oil-free lubrication compressor |
| CN109488764A (en) * | 2018-12-25 | 2019-03-19 | 四川大川压缩机有限责任公司 | A kind of piston ring suitable for High Pressure Difference |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091209 |
|
| CX01 | Expiry of patent term |