CN101571115A - Full-oil-free lubrication sealing type gas compressor - Google Patents
Full-oil-free lubrication sealing type gas compressor Download PDFInfo
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- CN101571115A CN101571115A CNA2009101169586A CN200910116958A CN101571115A CN 101571115 A CN101571115 A CN 101571115A CN A2009101169586 A CNA2009101169586 A CN A2009101169586A CN 200910116958 A CN200910116958 A CN 200910116958A CN 101571115 A CN101571115 A CN 101571115A
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- magnetic coupling
- crankcase
- oil
- bearing
- inner pedestal
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Abstract
The invention discloses a full-oil-free lubrication sealing type gas compressor which has the technical proposal that an inner bearing seat is sheathed at the outer ring of a main bearing, a seal groove arranged between the inner bearing seat and a contact surface of a crankcase is internally provided with a sealing ring, an inner rotor of a magnetic coupling is fixed on a power input end of a crank shaft by a key, the inner bearing seat is fixedly provided with an insulating cover of the magnetic coupling, an outer rotor of the magnetic coupling is fixedly connected with a power input shaft which is provided with a bearing, an outer bearing seat is sheathed at the outer ring of the bearing, a concentric cover is arranged outside the outer rotor of the magnetic coupling, and flanges at the two ends of the concentric cover are respectively fixed and connected with the inner and the outer bearing seats. On the basis of the full-oil-free lubrication sealing type gas compressor, the unique moving seal part which is the power input end of the crank shaft is designed to be a closed structure, and the magnetic coupling is adopted for realizing power input, so that the compressed gaseous medium is ensured not to be polluted by lubricating oil, and the compressed gas is not leaked. Therefore, the whole machine has low cost and high reliability.
Description
(1) technical field:
The present invention relates to a kind of gas compressor, relate in particular to a kind of full-oil-free lubrication sealing type gas compressor.
(2) background technique:
At present, the special gas compressor is widely used in all trades and professions, and some uses occasion dangerous, poisonous or noble gas requires very tight to the machine sealability, as helium compressor, H
2The SF that compressor, high voltage substation use
6Compressor etc.Present stage, the overwhelming majority was from external import, and price is very expensive, and all separate units are customized, reached some months even 1 year delivery date.Domestically produced machine at motive sealing position still can not accomplish especially that at the complete machine seal aspect 100% does not have leakage.The encapsulating method that some are traditional, leakage rate is more than 2% as encapsulation scheme such as piston ring, filler; More better semi-closed structure, axle head adopts mechanical seal, and leakage rate can be controlled in below 1%.But there is wear problem in mechanical seal, and needs to be equipped with in addition source of the gas during the gas of sealing elevated pressures, has the factor of the lubricated oil pollution of gas simultaneously, can not meet the demands in the high-purity gas occasion.In the high occasion of sealability reliability requirement, diaphragm type compressor can be competent at only, but its complex structure has oil circuit and gas circuit two to overlap independently system, and size is huge, and price is higher, also has the limited problem of diaphragm life-span and air displacement simultaneously.Common full-oil-free lubrication air compressor on the market, its main machine structure is similar, critical piece comprises crankcase, bent axle, connecting rod, cylinder, piston, be separately installed with main bearing on the inner pedestal of bent axle and the outer bearing carrier, connnecting rod big end and connecting rod small end are separately installed with rolling bearing and needle bearing, all bearings all are grease lubrications, and design has the grease seal circle, there is not lubricant oil in the crankcase, piston ring and guide ring are non-metal self-lubricating made, can guarantee that the pressurized air of discharging does not contain any oil content.But this full-oil-free lubrication air compressor can not directly use as some special gas compressor, because the power intake of bent axle is the motive sealing position, can not accomplish zero leakage, and along with the prolongation of service time, because wear reason, leakage rate can be increasing.
(3) summary of the invention:
Technical problem to be solved by this invention just provides a kind of full-oil-free lubrication sealing type gas compressor, and it can guarantee that compressed gas can lubricated oil pollution, can guarantee that again gas does not leak, and the complete machine cost is low, the reliability height.
In order to solve the problems of the technologies described above, the technical solution that full-oil-free lubrication sealing type gas compressor of the present invention adopted is such: it comprises crankcase, bent axle, connecting rod, cylinder, piston, on the bent axle power intake, main bearing is installed, there is not lubricant oil in the crankcase, all bearings all are grease lubrications, piston ring and guide ring are non-metal self-lubricating made, be with inner pedestal on the outer ring of main bearing, inner pedestal is fixed on the crankcase outer wall, in the seal groove of inner pedestal and crankcase surface of contact seal ring is installed; Keyway on the bent axle power intake termination is corresponding mutually with keyway on the magnetic coupling internal rotor, and key is positioned between above-mentioned two keyways, and the magnetic coupling internal rotor is fixedlyed connected with the bent axle power intake; On inner pedestal, be installed with the shielding can of magnetic coupling; The external rotor of magnetic coupling is fixedlyed connected with power input shaft, and bearing is installed on the power input shaft, and the inner ring of bearing cooperates with power input shaft, and outer bearing carrier is enclosed within on the outer ring of bearing; Outside at the external rotor of magnetic coupling is provided with concentric cover, and cover is made of the connecting tube between two flanges and two flanges with one heart, and the flange that covers an end is with one heart fixedlyed connected with inner pedestal, and the flange that covers the other end is with one heart fixedlyed connected with outer bearing carrier.
The seal groove of described inner pedestal and crankcase surface of contact is located on the inner pedestal, and seal ring is installed in the seal groove.
The seal groove of described inner pedestal and crankcase surface of contact is located on the crankcase, and seal ring is installed in the seal groove.
After adopting technique scheme, owing to do not have lubricant oil in the crankcase of full-oil-free lubrication sealing type gas compressor of the present invention, all bearings all are grease lubrications, piston ring and guide ring are non-metal self-lubricating made, so can guarantee that compressed gas medium can lubricated oil pollution; Again owing to be with inner pedestal on the outer ring of main bearing, in the seal groove of the surface of contact of inner pedestal and crankcase seal ring is installed, by key the magnetic coupling internal rotor is fixedlyed connected with the bent axle power intake, on inner pedestal, be installed with the shielding can of magnetic coupling, the external rotor of magnetic coupling is fixedlyed connected with power input shaft, bearing is installed on the power input shaft, outer bearing carrier is enclosed within on the outer ring of bearing, outside at the external rotor of magnetic coupling is provided with concentric cover, the flange of cover one end is fixedlyed connected with inner pedestal with one heart, the flange of the cover the other end is fixedlyed connected with outer bearing carrier with one heart, like this, the shielding can of magnetic coupling just is isolated into two separate parts with the main frame of compressor of the present invention: 1, shielding can, internal rotor, crankcase, inner pedestal, bent axle, connecting rod, the part that cylinder etc. constitute, this part contacts with compressed gas medium, be static seal fully externally, utilize the seal ring sealing can accomplish that gas medium does not have leakage; 2, the part of formations such as external rotor, outer bearing carrier, concentric cover, power input shaft, this part does not contact fully with compressed gas medium, need not sealing.The present invention is on the basis of original full-oil-free lubrication air compressor; with unique motive sealing position---the power intake of bent axle is designed to seal structure; adopt magnetic coupling to realize the power input; because the inside and outside rotor of magnetic coupling is made by permanent magnet, do not contact each other, by the magnetic force transferring power; there is not friction and wear; non-maintaining, normal use condition lower magnetic force can not disappear, and also has the effect of overload protection main frame simultaneously.Complete machine cost of the present invention is relatively low, the reliability height.
(4) description of drawings:
Fig. 1 is the schematic representation of full-oil-free lubrication sealing type gas compressor of the present invention;
Fig. 2 is a magnetic coupling position scheme of installation in the gas compressor shown in Figure 1;
Fig. 3 is the structural representation of inner pedestal in the gas compressor shown in Figure 1;
Fig. 4 is the structural representation that covers with one heart in the gas compressor shown in Figure 1.
(5) embodiment:
In conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 4 as seen, the main frame 1 of full-oil-free lubrication sealing type gas compressor of the present invention comprises crankcase 2, bent axle 3, connecting rod 4, cylinder 5, piston, on bent axle 3 power intakes, main bearing 6 is installed, there is not lubricant oil in the crankcase 2, all bearings all are grease lubrications, and piston ring and guide ring are non-metal self-lubricating made.Be with inner pedestal 7 on the outer ring of main bearing 6, inner pedestal 7 is fixed on crankcase 2 outer walls, on inner pedestal 7, be provided with seal groove 8, seal ring 9 is installed in the seal groove 8, to reach the effect of static seal, sealing groove 8 can also be located on the crankcase 2, and the position of seal groove 8 is not limit, and gets final product so long as be arranged on the surface of contact of inner pedestal 7 and crankcase 2.Keyway 11 on keyway on the bent axle 3 power intake terminations and the magnetic coupling internal rotor 10 is corresponding mutually, and key 12 is positioned between above-mentioned two keyways, and magnetic coupling internal rotor 10 is fixedlyed connected with bent axle 3 power intakes.Outer rim at inner pedestal 7 is provided with several mounting holes 13, the shielding can 14 of magnetic coupling is provided with several mounting holes 15, this mounting hole 15 is corresponding with the mounting hole 13 on the inner pedestal 7, and bolt passes mounting hole 15 on the shielding can 14 and the mounting hole 13 on the inner pedestal 7 shielding can 14 of magnetic coupling is fixed on the inner pedestal 7.The shielding can 14 of magnetic coupling is not limited to bolt with fixedly connected mode between the inner pedestal 7 and is connected, and also can adopt other fixedly connected mode, as welding.The external rotor 16 of magnetic coupling is fixedlyed connected with power input shaft 17, the external rotor 16 of magnetic coupling is provided with several mounting holes 18, power input shaft 17 is provided with several mounting holes 19, this mounting hole 19 is corresponding with the mounting hole 18 on the external rotor 16, and bolt passes mounting hole 19 on the power input shaft 17 and the mounting hole 18 on the external rotor 16 is fixed on external rotor 16 on the power input shaft 17.Two bearings 20 are installed on the power input shaft 17, and the inner ring of bearing 20 cooperates with power input shaft 17, and outer bearing carrier 21 is enclosed within on the outer ring of two bearings 20.Outside at the external rotor 16 of magnetic coupling is provided with concentric cover 22, with one heart cover 22 is made of the connecting tube 25 between 23,24 and two flanges 23,24 of two flanges, be respectively equipped with several mounting holes 26,27 on two flanges 23,24 of cover 22 with one heart, inner pedestal 7 is provided with the corresponding mounting hole 28 in mounting hole 26 positions on several and the flange 23, covers with one heart between the flange 23 of 22 1 ends and the inner pedestal 7 to be bolted to connection; Outer bearing carrier 21 is provided with the corresponding mounting hole 29 in mounting hole 27 positions on several and the flange 24, covers with one heart between the flange 24 of 22 the other ends and the outer bearing carrier 21 also to be bolted to connection.Cover 22 is used for the internal rotor 10 of magnetic coupling, the concentric locating of external rotor 16 with one heart, guarantees can not produce deviation when internal rotor 10 and external rotor 16 rotate.
Described magnetic coupling is made up of internal rotor 10, external rotor 16, shielding can 14 and seal ring 30, is produced by specialized factory, as long as suitably select model according to moment of torsion; Between the shielding can 14 of magnetic coupling and the inner pedestal 7, between the external rotor 16 of magnetic coupling and the power input shaft 17, the concentric flange 23,24 that covers 22 two ends respectively with inner pedestal 7, outer bearing carrier 21 between fixedly connected mode be not limited to bolt and be connected, above-mentioned variation is to realize the object of the invention degree of being.
Claims (3)
1, a kind of full-oil-free lubrication sealing type gas compressor, comprise crankcase (2), bent axle (3), connecting rod (4), cylinder (5), piston, on bent axle (3) power intake, main bearing (6) is installed, crankcase does not have lubricant oil in (2), all bearings all are grease lubrications, piston ring and guide ring are non-metal self-lubricating made, it is characterized in that: be with inner pedestal (7) on the outer ring of main bearing (6), inner pedestal (7) is fixed on crankcase (2) outer wall, in the seal groove (8) of inner pedestal (7) and crankcase (2) surface of contact seal ring (9) is installed; Keyway (11) on keyway on bent axle (3) the power intake termination and the magnetic coupling internal rotor (10) is corresponding mutually, key (12) is positioned between above-mentioned two keyways, and magnetic coupling internal rotor (10) is fixedlyed connected with bent axle (3) power intake; On inner pedestal (7), be installed with the shielding can (14) of magnetic coupling; The external rotor of magnetic coupling (16) is fixedlyed connected with power input shaft (17), and bearing (20) is installed on the power input shaft (17), and the inner ring of bearing (20) cooperates with power input shaft (17), and outer bearing carrier (21) is enclosed within on the outer ring of bearing (20); Be provided with concentric cover (22) in the outside of magnetic coupling external rotor (16), cover (22) is made of the connecting tube (25) between two flanges (23,24) and two flanges (23,24) with one heart, the flange (23) of cover (22) one ends is fixedlyed connected with inner pedestal (7) with one heart, and the flange (24) of cover (22) the other end is fixedlyed connected with outer bearing carrier (21) with one heart.
2, full-oil-free lubrication sealing type gas compressor according to claim 1 is characterized in that: the seal groove (8) of described inner pedestal (7) and crankcase (2) surface of contact is located on the inner pedestal (7), and seal ring (9) is installed in the seal groove (8).
3, full-oil-free lubrication sealing type gas compressor according to claim 1 is characterized in that: the seal groove (8) of described inner pedestal (7) and crankcase (2) surface of contact is located on the crankcase (2), and seal ring (9) is installed in the seal groove (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101169586A CN101571115A (en) | 2009-06-03 | 2009-06-03 | Full-oil-free lubrication sealing type gas compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101169586A CN101571115A (en) | 2009-06-03 | 2009-06-03 | Full-oil-free lubrication sealing type gas compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101571115A true CN101571115A (en) | 2009-11-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009101169586A Pending CN101571115A (en) | 2009-06-03 | 2009-06-03 | Full-oil-free lubrication sealing type gas compressor |
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| CN (1) | CN101571115A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114576134A (en) * | 2022-03-17 | 2022-06-03 | 台州宝恩科技有限公司 | Pure oilless high-pressure air compressor |
-
2009
- 2009-06-03 CN CNA2009101169586A patent/CN101571115A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114576134A (en) * | 2022-03-17 | 2022-06-03 | 台州宝恩科技有限公司 | Pure oilless high-pressure air compressor |
| CN114576134B (en) * | 2022-03-17 | 2024-06-11 | 台州宝恩科技有限公司 | Pure oilless high-pressure air compressor |
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Open date: 20091104 |