CN101922440A - Reciprocating oil seal structure of compressor - Google Patents
Reciprocating oil seal structure of compressor Download PDFInfo
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- CN101922440A CN101922440A CN2010102796224A CN201010279622A CN101922440A CN 101922440 A CN101922440 A CN 101922440A CN 2010102796224 A CN2010102796224 A CN 2010102796224A CN 201010279622 A CN201010279622 A CN 201010279622A CN 101922440 A CN101922440 A CN 101922440A
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- oil
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- connecting rod
- sealing
- compressor
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Abstract
The invention belongs to the technological field of compressors, relating to a reciprocating oil seal structure of a straight reciprocating compressor, which comprises an oil seal main part, a seal lip, an end plate and a connecting rod, wherein the connecting rod passes through the oil seal main part and the seal lip; the seal lip is hermetically matched with the external surface of the rod body of the connecting rod; an abducent seal fin is adopted; the seal fin is fixedly and hermetically connected with the oil seal main part or is integrated with the oil seal main part; the external ring margin of the seal fin is fixedly and hermetically connected with the end plate; the elasticity of the seal fin is utilized as a compensation to ensure that the oil seal main part can trace the shake of the connecting rod in time; the transformation range of the seal lip is reduced relative to the rod body of the connecting rod, and the degree the lip of the seal lip fits the connecting rod is further increased. The invention can ensure that the oil seal keeps good sealability when the oil seal structure is in shacking condition.
Description
Technical field
The invention belongs to the Compressor Technology field, relate in particular to a kind of oil seal structure of compressor, more specifically to a kind of reciprocating oil seal structure of linear reciprocation compressor.
Background technique
The piston of linear reciprocation compressor and connecting rod adopt linear reciprocating motion, for the linear reciprocation compressor that oil lubrication is arranged, escape to the active chamber of piston in order to prevent that lubricant oil in the crankcase from scurrying, need to use oil seal structure that its connecting rod is sealed, oil sealing in usefulness comprises the oil sealing main body at present, sealing lip and elasticity circle circle, wherein the oil sealing main body is fastened on the end plate, described end plate is fastened on the crankcase of compressor or end plate and crankcase are structure as a whole, reciprocating connecting rod passes through the endoporus of oil sealing main body and cooperates with the sealing lip dynamic seal (packing), and the effect of elasticity circle circle is to make fit the securely shaft of connecting rod of sealing lip.
Above-mentioned oil sealing has a drawback, Here it is, and the oil sealing main body is fastening by end plate, when vibration takes place in connecting rod, the phenomenon that the interior axially bored line of oil sealing main body and the axis of connecting rod will occur not overlapping, this moment, connecting rod bias voltage oil sealing made oil sealing occur unbalanced to the applying power of connecting rod shank, in other words sealing lip ovalizing deflection can occur under the effect of connecting rod, in case the ovalizing deflection amplitude cross senior general cause sealing lip can't press close to connecting rod shank even come to nothing (especially a certain end of indicatrix ellipse major axis and near the position), cause this moment oil sealing sealing to lose efficacy easily; In addition, the sealing lip of oil sealing and connecting rod exist relative movement also also unfavorable to the sealing between them.
Summary of the invention
The present invention proposes a kind of reciprocating oil seal structure of compressor, still can keep good sealing property even purpose is the situation oil sealing that is in vibration.
The object of the present invention is achieved like this: a kind of reciprocating oil seal structure of compressor, on the axis hole of end plate, be equipped with connecting rod, be provided with sealing configuration between end plate and the connecting rod, sealing configuration includes sealing lip and oil sealing main body, sealing lip and oil sealing main body are fastenedly connected or sealing lip and oil sealing main body are structure as a whole, the outer surface of sealing lip and connecting rod shank is sealed and matched, be fastened and connected or one-body molded diaphragm seal arranged at the outer surface of oil sealing main body, the outer ring edge and the end plate of diaphragm seal are fastened and connected.
The rounded cross section of the transverse cross-sectional profile of the shaft of above-mentioned connecting rod.
Above-mentioned oil sealing main body is provided with elasticity circle circle.
Above-mentioned oil sealing main body is provided with two groups of above sealing lips.
Above-mentioned diaphragm seal has the undulatory structure of fluctuating.
The embedded intrinsic oil jacket of scraping of above-mentioned oil sealing main body is describedly scraped oil jacket and connecting rod is slidingly matched.
Above-mentioned oil sealing main body and sealing lip and connecting rod are fastened and connected.
Above-mentioned oil sealing main body and have more than two with its supporting sealing lip and their axis does not overlap, each oil sealing main body is common and same diaphragm seal is fastened and connected or each oil sealing main body and same diaphragm seal are structure as a whole.
The outer surface of above-mentioned oil sealing main body is inlaid with the banking stop of annular, and banking stop adopts the gap to be connected movingly with end plate.
A kind of reciprocating oil seal structure of compressor of the present invention adopts the diaphragm seal of abduction, because the outer ring edge and the end plate of sealing sheet are fastened and connected, diaphragm seal and oil sealing main body also adopt sealing to be fastenedly connected or are structure as a whole with the oil sealing main body simultaneously, utilizing the elasticity of diaphragm seal to do compensation makes the oil sealing main body can in time follow the tracks of rocking of connecting rod, reduced the amplitude of deformation of sealing lip with respect to connecting rod shank, thereby improved the degree of sealing lip lip applying connecting rod, so, oil seal structure still can keep good sealing property even being in the situation oil sealing of vibration; In addition, oil sealing main body and sealing lip sealing are fastened on the connecting rod, can thoroughly eliminate the leak path between them.
Description of drawings
Fig. 1 is the generalized section of a kind of reciprocating oil seal structure of compressor of the present invention;
Fig. 2 is the isometric cutaway view of a kind of reciprocating oil seal structure of compressor of the present invention shown in Figure 1;
Fig. 3 is that a kind of reciprocating oil seal structure of compressor of the present invention is provided with the generalized section of scraping oil jacket.
Embodiment
With specific embodiment the present invention is further described below, referring to Fig. 1-3:
A kind of reciprocating oil seal structure of compressor, it comprises oil sealing main body 1, sealing lip 2, end plate 3 and connecting rod 4, described sealing lip 2 is fastenedly connected with oil sealing main body 1 or sealing lip 2 is structure as a whole with oil sealing main body 1, described connecting rod 4 passes through oil sealing main body 1 and sealing lip 2, sealing lip 2 is sealed and matched with the outer surface 4a of connecting rod 4 shafts, the crankcase of described end plate 3 and compressor is fastenedly connected or end plate 3 is the part of compressor crank shaft box body, greatest feature of the present invention is: be provided with diaphragm seal 5, described diaphragm seal 5 is fastened and connected with oil sealing main body 1 or diaphragm seal 5 is structure as a whole with oil sealing main body 1, and the outer ring edge of diaphragm seal 5 and described end plate 3 are fastened and connected; Need to prove that the diaphragm seal 5 among the present invention can adopt existing various elastic material to make, and comprises metallic material, rubber material, plastics and composite material etc.; Obviously, diaphragm seal 5 can be considered the abduction structure of oil sealing main body 1, because the outer ring edge and the end plate 3 of sealing sheet 5 are fastened and connected, diaphragm seal 5 also adopts sealing to be fastenedly connected with oil sealing main body 1 or is structure as a whole with oil sealing main body 1 simultaneously, therefore utilizing the elasticity of diaphragm seal 5 to do compensation can be so that oil sealing main body 1 can in time be followed the tracks of rocking of connecting rod 4, reduced the amplitude of deformation of sealing lip 2 with respect to connecting rod 4 shafts, thereby improved the degree of sealing lip 2 lip applying connecting rods 4, so, oil seal structure still can keep good sealing property even being in the situation oil sealing of vibration.
The transverse cross-sectional profile of the shaft of connecting rod 4 of the present invention can adopt circular cross-section, elliptic cross-section, rectangular cross-section and other polygonal cross-section, is the best with rounded cross section wherein, and is preferably the shaft of straight cylinder; It is pointed out that its seamed edge can carry out rounding and chamfered when the transverse cross-sectional profile of the shaft of connecting rod 4 is rectangular cross-section or other polygonal cross-section; Undoubtedly, the shape that the lip of sealing lip 2 preferably adopts the transverse cross-sectional profile form with connecting rod 4 to be complementary can guarantee the sealing between sealing lip 2 and the connecting rod 4 like this.
Two groups of above sealing lips 2 can be set on the oil sealing main body 1 of the present invention, can improve the sealability of oil sealing so greatly.
Can scrape oil jacket 7 by build-in in the oil sealing main body 1 of the present invention, the described oil jacket 7 of scraping is slidingly matched with connecting rod 4 employings, and the effect of scraping oil jacket 7 is that the lubricant oil that is splashed on connecting rod 4 shafts is scraped back in the crankcase of compressor as far as possible, to alleviate the work load of sealing lip 2.
Oil sealing main body 1 of the present invention and sealing lip 2 even can adopt the mode of structure that is fastened and connected with connecting rod 4, this means that oil sealing main body 1 and sealing lip 2 will move reciprocatingly with connecting rod 4, require diaphragm seal 5 should have better elasticity for this reason and also preferably adopt the undulatory structure that rises and falls, so that it has higher responsiveness and followability with respect to connecting rod 4; Especially, when oil sealing main body 1 has two when above and their axis (not shown) when not overlapping mutually, that is compressor is when being multicylinder compressor, each oil sealing main body 1 can also be fastened and connected with same diaphragm seal 5 jointly or each oil sealing main body 1 is structure as a whole with same diaphragm seal 5, and the structure of compressor will be compact more like this.
The outer surface of above-mentioned oil sealing main body 1 is inlaid with the banking stop 8 of annular, banking stop 8 adopts the gap to be connected movingly with end plate 3, banking stop 8 restriction end plates 3 can only moving radially or rocking along connecting rod 4, can not be along the moving axially of connecting rod 4, banking stop 8 has played the axial limiting effect to axle envelope main body 1.
Undoubtedly, a kind of reciprocating oil seal structure of compressor of the present invention has adopted the diaphragm seal 5 of abduction, because the outer ring edge and the end plate 3 of sealing sheet 5 are fastened and connected, diaphragm seal 5 also adopts sealing to be fastenedly connected with oil sealing main body 1 or is structure as a whole with oil sealing main body 1 simultaneously, therefore can utilize the elasticity of diaphragm seal 5 to do compensation makes oil sealing main body 1 can in time follow the tracks of rocking of connecting rod 4, reduced the amplitude of deformation of sealing lip 2 with respect to connecting rod 4 shafts, thereby improved the degree of sealing lip 2 lip applying connecting rods 4, so, oil seal structure still can keep good sealing property even being in the situation oil sealing of vibration.
The foregoing description is one of some preferred embodiments of the present invention only, is not to limit protection scope of the present invention according to this, so: all various equivalences of doing according to structure of the present invention, shape, principle change, and all should be covered by within protection scope of the present invention.
Claims (9)
1. reciprocating oil seal structure of compressor, on the axis hole of end plate, be equipped with connecting rod, be provided with sealing configuration between end plate and the connecting rod, the sealing lip of sealing configuration and oil sealing main body are fastenedly connected or sealing lip and oil sealing main body are structure as a whole, the outer surface of sealing lip and connecting rod shank is sealed and matched, it is characterized in that: be fastened and connected or one-body molded diaphragm seal arranged at the outer surface of oil sealing main body, the outer ring edge and the end plate of diaphragm seal are fastened and connected.
2. a kind of reciprocating oil seal structure of compressor according to claim 1 is characterized in that the rounded cross section of transverse cross-sectional profile of described connecting rod shank.
3. a kind of reciprocating oil seal structure of compressor according to claim 2 is characterized in that described oil sealing main body is provided with elasticity circle circle.
4. a kind of reciprocating oil seal structure of compressor according to claim 3 is characterized in that described oil sealing main body is provided with two groups of above sealing lips.
5. according to any described a kind of reciprocating oil seal structure of compressor in the claim 1 to 4, it is characterized in that described diaphragm seal has the undulatory structure of fluctuating.
6. according to any described a kind of reciprocating oil seal structure of compressor in the claim 1 to 4, it is characterized in that the embedded intrinsic oil jacket of scraping of described oil sealing main body, describedly scrape oil jacket and connecting rod is slidingly matched.
7. according to any described a kind of reciprocating oil seal structure of compressor in the claim 1 to 4, it is characterized in that described oil sealing main body and sealing lip and connecting rod are fastened and connected.
8. a kind of reciprocating oil seal structure of compressor according to claim 7, it is characterized in that described oil sealing main body and have more than two with its supporting sealing lip and their axis does not overlap that each oil sealing main body is common and same diaphragm seal is fastened and connected or each oil sealing main body and same diaphragm seal are structure as a whole.
9. a kind of reciprocating oil seal structure of compressor according to claim 1 is characterized in that the outer surface of described oil sealing main body is inlaid with the banking stop of annular, and banking stop adopts the gap to be connected movingly with end plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102796224A CN101922440A (en) | 2010-09-13 | 2010-09-13 | Reciprocating oil seal structure of compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102796224A CN101922440A (en) | 2010-09-13 | 2010-09-13 | Reciprocating oil seal structure of compressor |
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| Publication Number | Publication Date |
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| CN101922440A true CN101922440A (en) | 2010-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010102796224A Pending CN101922440A (en) | 2010-09-13 | 2010-09-13 | Reciprocating oil seal structure of compressor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518808A (en) * | 2011-12-28 | 2012-06-27 | 浙江鸿友压缩机制造有限公司 | Floating type shaft seal structure |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52105314A (en) * | 1975-11-20 | 1977-09-03 | Shizuo Sezaki | Sealing means for filled cooling medium of compressors for air cooling |
| JPS56157389U (en) * | 1980-04-24 | 1981-11-24 | ||
| US4495855A (en) * | 1983-05-31 | 1985-01-29 | Showa Precision Machinery Co., Ltd. | Reciprocating type oil-free gas compressor |
| JPS6176774A (en) * | 1984-09-20 | 1986-04-19 | Aisin Seiki Co Ltd | Liquid compressor |
| CN2141852Y (en) * | 1992-05-23 | 1993-09-08 | 无锡市蠡园塑料制品厂 | Corrugated floating sealing ring |
| CN1487225A (en) * | 2002-06-26 | 2004-04-07 | 卡尔弗罗伊登柏格两合公司 | Axial shaft sealing device |
| CN2791357Y (en) * | 2004-03-23 | 2006-06-28 | 同济大学 | Three-way floatation type oil-seal |
| CN201802580U (en) * | 2010-09-13 | 2011-04-20 | 浙江鸿友压缩机制造有限公司 | Reciprocating oil seal structure of compressor |
-
2010
- 2010-09-13 CN CN2010102796224A patent/CN101922440A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52105314A (en) * | 1975-11-20 | 1977-09-03 | Shizuo Sezaki | Sealing means for filled cooling medium of compressors for air cooling |
| JPS56157389U (en) * | 1980-04-24 | 1981-11-24 | ||
| US4495855A (en) * | 1983-05-31 | 1985-01-29 | Showa Precision Machinery Co., Ltd. | Reciprocating type oil-free gas compressor |
| JPS6176774A (en) * | 1984-09-20 | 1986-04-19 | Aisin Seiki Co Ltd | Liquid compressor |
| CN2141852Y (en) * | 1992-05-23 | 1993-09-08 | 无锡市蠡园塑料制品厂 | Corrugated floating sealing ring |
| CN1487225A (en) * | 2002-06-26 | 2004-04-07 | 卡尔弗罗伊登柏格两合公司 | Axial shaft sealing device |
| CN2791357Y (en) * | 2004-03-23 | 2006-06-28 | 同济大学 | Three-way floatation type oil-seal |
| CN201802580U (en) * | 2010-09-13 | 2011-04-20 | 浙江鸿友压缩机制造有限公司 | Reciprocating oil seal structure of compressor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518808A (en) * | 2011-12-28 | 2012-06-27 | 浙江鸿友压缩机制造有限公司 | Floating type shaft seal structure |
| CN102518808B (en) * | 2011-12-28 | 2015-02-18 | 浙江鸿友压缩机制造有限公司 | Floating type shaft seal structure |
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Application publication date: 20101222 |