CN101571116A - Full-oil-free lubrication piston reciprocating air compressor - Google Patents
Full-oil-free lubrication piston reciprocating air compressor Download PDFInfo
- Publication number
- CN101571116A CN101571116A CNA2009101169590A CN200910116959A CN101571116A CN 101571116 A CN101571116 A CN 101571116A CN A2009101169590 A CNA2009101169590 A CN A2009101169590A CN 200910116959 A CN200910116959 A CN 200910116959A CN 101571116 A CN101571116 A CN 101571116A
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- China
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- support ring
- piston
- piston skirt
- air compressor
- oil
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Abstract
The invention discloses a full-oil-free lubrication piston reciprocating air compressor which has the technical proposal that a locating groove is arranged at a piston skirt part under a piston ring groove, the piston skirt part is completely covered inside a support ring, the inner wall of the support ring is provided with a locating lug boss having the position being corresponding to the locating groove arranged at the piston skirt part, and the locating lug boss of the support ring is clamped in the locating groove arranged at the piston skirt part. The structure of the traditional support ring is changed, and the two original supports rings are designed to be a whole support ring; although the gap between the support ring and an air cylinder is enlarged when the abrasion of the support ring is increased, the piston skirt part is completely covered inside the support ring, a piston is not contacted with the air cylinder, and the normal work of the machine is not affected; only when the wall thickness part of the support ring is worn out, the piston is contacted with the air cylinder. The working life of the support ring of the air compressor is more than 8000h, so as to be much longer than that of the support ring of the traditional machine.
Description
(1) technical field:
The present invention relates to a kind of air compressor, relate in particular to a kind of full-oil-free lubrication piston reciprocating air compressor.
(2) background technique:
At present, common full-oil-free lubrication piston reciprocating air compressor on the market, main machine structure is similar, especially wherein cylinder assembly part: in order to realize oil-free lubrication, piston does not directly contact with cylinder, but the macromolecular material that adopts PTFE etc. to have self-lubricating property is made support ring and is assemblied on the piston, when reciprocating motion of the pistons, support ring and cylinder minute surface form friction pair, and the piston ring that assembles same material again on piston can be realized the purpose of oil-free lubrication pressurized gas.The support ring of piston mainly contains two effects: 1, keep piston concentric with cylinder, guarantee that piston does not directly contact with cylinder; 2, bear the lateral force part that is decomposed to form by connecting rod power.Traditional piston structure all is to be processed with the support annular groove in its skirt section, support ring assembling back is by this step location, annular groove two ends, but along with the wearing and tearing of support ring strengthen, gap between support ring and the cylinder increases, piston also increases gradually along wrist pin center line amplitude of fluctuation in movement process, in case amplitude of fluctuation is when the support annular groove positioning boss to piston contacts with cylinder greatly, machine is cisco unity malfunction just, must change support ring.The operating life of support ring is generally about 2000～3000 hours.
(3) summary of the invention:
Technical problem to be solved by this invention just provides a kind of full-oil-free lubrication piston reciprocating air compressor, and the support ring of this air compressor cooperates improved piston, can guarantee that piston does not contact with cylinder, and the operating life of support ring reached more than 8000 hours.
In order to solve the problems of the technologies described above, the technical solution that full-oil-free lubrication piston reciprocating air compressor of the present invention adopted is such: it comprises cylinder, piston, connecting rod, piston skirt below piston ring groove is provided with positioning groove, in support ring is coated on the piston skirt fully, the inwall of support ring is provided with the corresponding positioning boss in positioning groove position with the piston skirt, and the positioning boss of support ring is clamped in the positioning groove of piston skirt.
Described piston skirt is provided with two positioning grooves up and down, and the inwall of described support ring is provided with two positioning boss and corresponding with two positioning groove positions up and down of piston skirt respectively up and down.
After adopting technique scheme, because the piston skirt of full-oil-free lubrication piston reciprocating air compressor of the present invention below piston ring groove is provided with positioning groove, in support ring is coated on the piston skirt fully, the inwall of support ring is provided with the corresponding positioning boss in positioning groove position with the piston skirt, the positioning boss of support ring is clamped in the positioning groove of piston skirt, therefore, the present invention changes the structure of traditional support ring, original two support rings are designed to an integrated support ring, though along with the wearing and tearing of support ring strengthen, gap between support ring and the cylinder increases, but because the piston skirt is coated in the support ring fully, piston can not contact with cylinder, does not influence the machine proper functioning, have only after the support ring wall thickness has has partly worn and torn, piston just can contact with cylinder.The operating life of support ring of the present invention is more than 8000 hours, and is more much longer than the operating life of conventional machines support ring.
(4) description of drawings:
Fig. 1 is the cylinder position schematic representation of a kind of full-oil-free lubrication piston reciprocating air compressor of the present invention;
Fig. 2 is the partial sectional view of support ring shown in Fig. 1;
Fig. 3 is the schematic representation of structure of piston shown in Fig. 1.
(5) embodiment:
In conjunction with Fig. 1, Fig. 2, Fig. 3 as seen, three road piston ring grooves 2 are arranged at piston 1 top of full-oil-free lubrication piston reciprocating air compressor of the present invention, the piston skirt 3 of piston ring groove 2 belows is provided with two positioning grooves 4 up and down, in support ring 5 is coated on piston skirt 3 fully, the inwall of support ring 5 is provided with up and down two positioning boss 6 and corresponding with two positioning groove 4 positions up and down of piston skirt 3 respectively, and two positioning boss 6 up and down of support ring 5 are clamped on respectively in two positioning grooves 4 up and down of piston skirt 3.Described support ring 5 adopts self lubricating material manufacturings such as filled polytetrafluoroethylene, polyether-ether-ketone, can suitably select for use according to the gas medium of compression.When piston 1 to-and-fro motion, support ring 5 both can guarantee the concentricity of piston 1 and cylinder 7, can bear the lateral force that is passed over by connecting rod 8 again; As long as support ring 5 is wearing and tearing fully not, piston 1 is swung in any case along piston pin hole 9, also can not collide with cylinder 7.
Position, the quantity of the positioning boss 6 on the positioning groove 4 of described piston skirt 3 and support ring 5 inwalls are not limit, and above-mentioned variation is all to realize purpose degree of being of the present invention.
Claims (2)
1, a kind of full-oil-free lubrication piston reciprocating air compressor, comprise cylinder (7), piston (1), connecting rod (8), it is characterized in that: the piston skirt (3) in piston ring groove (2) below is provided with positioning groove (4), in support ring (5) is coated on piston skirt (3) fully, the inwall of support ring (5) is provided with the corresponding positioning boss in positioning groove (4) position (6) with piston skirt (3), and the positioning boss (6) of support ring (5) is clamped in the positioning groove (4) of piston skirt (3).
2, full-oil-free lubrication piston reciprocating air compressor according to claim 1, it is characterized in that: described piston skirt (3) are provided with two positioning grooves (4) up and down, and the inwall of described support ring (5) is provided with two positioning boss (6) and corresponding with the position of two positioning grooves (4) up and down of piston skirt (3) respectively up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101169590A CN101571116A (en) | 2009-06-03 | 2009-06-03 | Full-oil-free lubrication piston reciprocating air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101169590A CN101571116A (en) | 2009-06-03 | 2009-06-03 | Full-oil-free lubrication piston reciprocating air compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101571116A true CN101571116A (en) | 2009-11-04 |
Family
ID=41230559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009101169590A Pending CN101571116A (en) | 2009-06-03 | 2009-06-03 | Full-oil-free lubrication piston reciprocating air compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101571116A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506167A (en) * | 2011-10-25 | 2012-06-20 | 力帆实业(集团)股份有限公司 | Engine gear shift positioning mechanism |
| CN104912771A (en) * | 2015-06-15 | 2015-09-16 | 安徽美芝制冷设备有限公司 | Compressor and piston and connecting rod component for same |
| CN106150972A (en) * | 2014-03-18 | 2016-11-23 | 梁嘉麟 | L-type piston ring is utilized to constitute the method completely without clearance piston reciprocating compressor |
| US9856866B2 (en) | 2011-01-28 | 2018-01-02 | Wabtec Holding Corp. | Oil-free air compressor for rail vehicles |
-
2009
- 2009-06-03 CN CNA2009101169590A patent/CN101571116A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9856866B2 (en) | 2011-01-28 | 2018-01-02 | Wabtec Holding Corp. | Oil-free air compressor for rail vehicles |
| CN102506167A (en) * | 2011-10-25 | 2012-06-20 | 力帆实业(集团)股份有限公司 | Engine gear shift positioning mechanism |
| CN106150972A (en) * | 2014-03-18 | 2016-11-23 | 梁嘉麟 | L-type piston ring is utilized to constitute the method completely without clearance piston reciprocating compressor |
| CN104912771A (en) * | 2015-06-15 | 2015-09-16 | 安徽美芝制冷设备有限公司 | Compressor and piston and connecting rod component for same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20091104 |