CN104196698A - Oil-free air compressor - Google Patents
Oil-free air compressor Download PDFInfo
- Publication number
- CN104196698A CN104196698A CN201410391611.3A CN201410391611A CN104196698A CN 104196698 A CN104196698 A CN 104196698A CN 201410391611 A CN201410391611 A CN 201410391611A CN 104196698 A CN104196698 A CN 104196698A
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- cylinder
- oil
- piston
- air compressor
- free air
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Abstract
The invention discloses an oil-free air compressor and particularly relates to structural improvement to a compression system of an oil-free air compressor. In order to solve the technical problem that the oil content of gas output by an existing air compressor is high, the structure of the compression system of the air compressor is improved. The oil-free air compressor is characterized in that a barrel 3 is arranged between a piston 2 and an air cylinder cover 4 in an air cylinder 1, the barrel 3 and the piston 2 are connected into a whole and make reciprocating motion together in the air cylinder, and a small annular gap is formed between the barrel 3 and the air cylinder wall. Due to the barrel 3, contact between compressed gas and lubricating oil on the air cylinder wall can be reduced; the lubricating oil is stopped from splashing into a compression chamber and retained at the bottom of the gap and then returns to a lubricating system. According to the oil-free air compressor, the oil content of the compressed gas output by the air compressor is reduced, waste of the lubricating oil is reduced, and the lubricating effect is improved.
Description
Technical field
The present invention relates to air compressor technical field, be specifically related to a kind of architecture advances of oil-free air compressor.
background technique
Conventional air compressor has piston type air compressor, screw air compressor, centrifugal air compressor, sliding-vane air compressor and scroll type air compressor now; The piston type air compressor using is in the market mainly to adopt cylinder to have the compressor of oil lubrication to be master, to have hydraulic shrinking machine internal lubrication mode mainly to adopt splashing and positive drive type.In the course of the work, a part of lubricant oil can enter in pressurized gas from piston ring part piston type air compressor, and compressed gas is taken away.Especially when cylinder wall and piston ring have produced noticeable wear, this situation is more serious.Cylinder has oil lubrication to guarantee life-span of cylinder and piston, but the gas oil content of the final output of air compressor is very high; Due to the applying working condition of air compressor, requiring is that gas oil content is more low better, in order to reduce gas oil content, after the gas output device of air compressor, also increases and has gas oil filter; Although increase gas oil filter, client's usage requirement can be substantially met, but a large amount of wastes of lubricant oil can be caused.If client has relatively high expectations to gaseous mass, the maintenance period of air compressor can sharply shorten, and the quality of output gas is affected by the working condition of gas oil filter also, often occurs unsettled phenomenon.
summary of the invention
the object of the invention is to overcome the deficiencies in the prior art, the technical problem solving is to provide a kind of oil-free air compressor, to realize lubricant oil and compressed-air actuated isolation, reduce the compressed air of lubricant oil and take away, reduce oil content and user cost in output gas.
For solving the problems of the technologies described above, technical solution of the present invention is as follows:
1, as shown in Figure 1, a kind of oil-free air compressor, comprises cylinder 1, piston 2, cylinder 3, cylinder head 4, connecting rod 5; Its feature is: the piston 2 in cylinder 1 is connected with piston 2 with the one end that is provided with cylinder 3, cylinder 3 in the middle of cylinder head 4; Its Placement can adopt and be fastenedly connected, be threaded, or cylinder 3 and piston 2 are made one; The other end of cylinder 3 is arranged in the space of cylinder wall and cylinder head 4 formations, does not contact with cylinder wall and cylinder head 4; The distance of cylinder 3 and cylinder wall is less than 5.9MM; Piston 2, cylinder 3 are reciprocating with respect to cylinder in cylinder together; Excircle at piston 2 is provided with the scraper ring that stops lubricant oil to enter pressing chamber, and keeps the sealing between cylinder wall and piston 2, the compression ring sealing; Such scraper ring and compression ring have respectively one at least on piston 2; The tight sliding contact of scraper ring, compression ring and cylinder wall.
2, the present invention has advantages of as follows with respect to prior art:
1) the present invention is provided with cylinder 3 structures at piston 2 tops, and the pressurized gas that can reduce pressing chamber contacts with the lubricant oil on cylinder wall, thereby has reduced the pollution of lubricant oil to pressurized gas, has greatly reduced the oil content in air compressor output gas.
2) between cylinder 3 and cylinder wall, form gap, not only reduce pressurized gas and contact with lubricant oil, also stopped piston 2 in cylinder in to-and-fro motion lubricating oil splash enter in pressing chamber, reduced loss and the use amount of lubricant oil.
3) those lubricant oil that stopped by cylinder 3, under self gravitation effect, are stayed the bottom, gap forming between cylinder 3 and cylinder wall, reenter lubrication system, increase the lubrication on cylinder wall.
4) due to the oil content having reduced in air compressor output gas, reduce the replacement frequency of gas oil filter below, extended the maintenance cycle of equipment.
Accompanying drawing explanation
Accompanying drawing 1 is the compression system structural representation of a kind of oil-free air compressor of the present invention; Its component are designated: cylinder 1, piston 2, cylinder 3, cylinder head 4, connecting rod 5.
Accompanying drawing 2 is the piston 2 of the embodiment of the present invention 1 and the fastening structure schematic diagram of cylinder 3.
Accompanying drawing 3 is the piston 2 of the embodiment of the present invention 2 and the screw connection structure schematic diagram of cylinder 3.
Accompanying drawing 4 is the piston 2 of the embodiment of the present invention 3 and the integral connecting structure schematic diagram of cylinder 3.
Embodiment
Specific embodiments of the invention:
Embodiment 1: as shown in accompanying drawing 1,2, a kind of oil-free air compressor, comprises cylinder 1, piston 2, cylinder 3, cylinder head 4, connecting rod 5; Its feature is: the one end that is provided with cylinder 3, cylinder 3 in the middle of the piston 2 in cylinder 1 and cylinder head 4 is sealing or semiclosed shape, and is connected with piston 2, and its Placement adopts fastening screw trip bolt to connect; The shape of this cylinder 3 and Placement are applicable to producing the thinner cylinder 3 of wall thickness with impact style, have manufacturing efficiency height and the low feature of cost of production.The other end of cylinder 3 is arranged in the space of cylinder wall and cylinder head 4 formations, does not contact with cylinder wall and cylinder head 4; The distance of cylinder 3 and cylinder wall is set as 0.01～5.9MM; Preferred 0.1～2MM, this clearance distance is little contributes to reduce contacting of pressurized gas and lubricant oil, reduces gas oil content.Piston 2, cylinder 3 are reciprocating with respect to cylinder in cylinder together; Excircle at piston 2 is provided with the scraper ring that stops lubricant oil to enter pressing chamber, and keeps the sealing between cylinder wall and piston 2, the compression ring sealing; Such scraper ring and compression ring have respectively one at least on piston 2; The tight sliding contact of scraper ring, compression ring and cylinder wall.
Embodiment 2: as shown in accompanying drawing 1,3, a kind of oil-free air compressor, comprises cylinder 1, piston 2, cylinder 3, cylinder head 4, connecting rod 5; Its feature is: the piston 2 in cylinder 1 is connected with piston 2 with the one end that is provided with cylinder 3, cylinder 3 in the middle of cylinder head 4; Its Placement adopts and is threaded, and the internal thread of cylinder 3 one end is connected with the outside thread of piston 2; This Placement is applicable to the thicker cylinder 3 of wall thickness, and the other end of cylinder 3 is arranged in the space of cylinder wall and cylinder head 4 formations, does not contact with cylinder wall and cylinder head 4; The distance of cylinder 3 and cylinder wall is set as 0.01～5.9MM; Preferred 0.01～3MM.Piston 2, cylinder 3 are reciprocating with respect to cylinder in cylinder together; Excircle at piston 2 is provided with the scraper ring that stops lubricant oil to enter pressing chamber, and keeps the sealing between cylinder wall and piston 2, the compression ring sealing; Such scraper ring and compression ring have respectively one at least on piston 2; The tight sliding contact of scraper ring, compression ring and cylinder wall.
Embodiment 3: as shown in accompanying drawing 1,4, a kind of oil-free air compressor, comprises cylinder 1, piston 2, cylinder 3, cylinder head 4, connecting rod 5; Its feature is: in the middle of the piston 2 in cylinder 1 and cylinder head 4, be provided with cylinder 3, one end of cylinder 3 and piston 2 create one; The other end of cylinder 3 is arranged in the space of cylinder wall and cylinder head 4 formations, does not contact with cylinder wall and cylinder head 4; The distance of cylinder 3 and cylinder wall is set as 0.01～5.9MM; Preferred 0.1～3MM.Piston 2, cylinder 3 are reciprocating with respect to cylinder in cylinder together; Excircle at piston 2 is provided with the scraper ring that stops lubricant oil to enter pressing chamber, and keeps the sealing between cylinder wall and piston 2, the compression ring sealing; Such scraper ring and compression ring have respectively one at least on piston 2; The tight sliding contact of scraper ring, compression ring and cylinder wall.
Claims (7)
1. an oil-free air compressor, comprises cylinder (1), piston (2), cylinder (3), cylinder head (4), connecting rod (5); It is characterized in that, the piston (2) in cylinder (1) is connected with piston (2) with the one end that is provided with cylinder (3), cylinder (3) in the middle of cylinder head (4); The other end of cylinder (3) is arranged in the space of cylinder wall and cylinder head (4) formation, does not contact with cylinder wall and cylinder head (4); Piston (2), cylinder (3) are reciprocating with respect to cylinder in cylinder together.
2. a kind of oil-free air compressor as claimed in claim 1, is characterized in that, one end of described cylinder (3) is connected with piston (2), and its Placement adopts and is fastenedly connected.
3. a kind of oil-free air compressor as claimed in claim 1, is characterized in that, one end of described cylinder (3) is connected with piston (2), and its Placement adopts and is threaded.
4. a kind of oil-free air compressor as claimed in claim 1, is characterized in that, one end of described cylinder (3) is connected with piston (2), and its Placement adopts cylinder (3) and piston (2) integral production.
5. a kind of oil-free air compressor as claimed in claim 1 or 2 or 3 or 4, it is characterized in that, the excircle of described piston (2) is provided with the scraper ring that stops lubricant oil to enter pressing chamber, and keeps the sealing between cylinder wall and piston (2), the compression ring sealing; Such scraper ring and compression ring have respectively one at least on piston (2); The tight sliding contact of scraper ring, compression ring and cylinder wall.
6. a kind of oil-free air compressor as claimed in claim 1 or 2 or 3 or 4, is characterized in that, the distance of described cylinder (3) and cylinder wall is 0.01～5.9MM; Preferred 0.1～3MM.
7. a kind of oil-free air compressor as claimed in claim 1 or 2 or 3 or 4, is characterized in that, described oil-free air compressor is applied to pressurized air and other gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410391611.3A CN104196698A (en) | 2014-08-11 | 2014-08-11 | Oil-free air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410391611.3A CN104196698A (en) | 2014-08-11 | 2014-08-11 | Oil-free air compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104196698A true CN104196698A (en) | 2014-12-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410391611.3A Pending CN104196698A (en) | 2014-08-11 | 2014-08-11 | Oil-free air compressor |
Country Status (1)
| Country | Link |
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| CN (1) | CN104196698A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285634A (en) * | 2019-06-06 | 2019-09-27 | 徐州金宸制冷设备有限公司 | A kind of New-style refrigeration house using magnetic control compressor |
| CN110892156A (en) * | 2017-04-28 | 2020-03-17 | 威伯科有限公司 | Compressor, compressed air supply device for operating a pneumatic device, and method for operating a compressed air supply device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08247037A (en) * | 1995-03-10 | 1996-09-24 | Iwata Air Compressor Mfg Co Ltd | Piston set for lubrication type two-stage reciprocating compressor |
| CN2301541Y (en) * | 1997-07-08 | 1998-12-23 | 邓兆武 | Compound ring piston |
| CN1676928A (en) * | 2005-04-25 | 2005-10-05 | 中国科学院理化技术研究所 | Oil lubrication pressure wave generator |
| CN201461323U (en) * | 2009-06-22 | 2010-05-12 | 桐昆集团股份有限公司 | Leakage-blocking and oil-scraping end cover used in piston of air compressor |
| CN202001250U (en) * | 2010-11-25 | 2011-10-05 | 杭州钱江压缩机有限公司 | Compressor piston |
| CN203655577U (en) * | 2013-11-26 | 2014-06-18 | 武汉凌达压缩机有限公司 | Reciprocating compressor |
| CN204003353U (en) * | 2014-08-11 | 2014-12-10 | 李奇 | A kind of oil-free air compressor |
-
2014
- 2014-08-11 CN CN201410391611.3A patent/CN104196698A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08247037A (en) * | 1995-03-10 | 1996-09-24 | Iwata Air Compressor Mfg Co Ltd | Piston set for lubrication type two-stage reciprocating compressor |
| CN2301541Y (en) * | 1997-07-08 | 1998-12-23 | 邓兆武 | Compound ring piston |
| CN1676928A (en) * | 2005-04-25 | 2005-10-05 | 中国科学院理化技术研究所 | Oil lubrication pressure wave generator |
| CN201461323U (en) * | 2009-06-22 | 2010-05-12 | 桐昆集团股份有限公司 | Leakage-blocking and oil-scraping end cover used in piston of air compressor |
| CN202001250U (en) * | 2010-11-25 | 2011-10-05 | 杭州钱江压缩机有限公司 | Compressor piston |
| CN203655577U (en) * | 2013-11-26 | 2014-06-18 | 武汉凌达压缩机有限公司 | Reciprocating compressor |
| CN204003353U (en) * | 2014-08-11 | 2014-12-10 | 李奇 | A kind of oil-free air compressor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110892156A (en) * | 2017-04-28 | 2020-03-17 | 威伯科有限公司 | Compressor, compressed air supply device for operating a pneumatic device, and method for operating a compressed air supply device |
| CN110892156B (en) * | 2017-04-28 | 2022-02-15 | 威伯科有限公司 | Compressor, compressed air supply device for operating a pneumatic device, and method for operating a compressed air supply device |
| CN110285634A (en) * | 2019-06-06 | 2019-09-27 | 徐州金宸制冷设备有限公司 | A kind of New-style refrigeration house using magnetic control compressor |
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Application publication date: 20141210 |
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| WD01 | Invention patent application deemed withdrawn after publication |