CN209908692U - Novel oil-free piston type air compressor - Google Patents
Novel oil-free piston type air compressor Download PDFInfo
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- CN209908692U CN209908692U CN201920272380.2U CN201920272380U CN209908692U CN 209908692 U CN209908692 U CN 209908692U CN 201920272380 U CN201920272380 U CN 201920272380U CN 209908692 U CN209908692 U CN 209908692U
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Abstract
The utility model discloses a novel there is not oily piston air compressor, it includes high efficiency motor (1), box (4), cylinder cap (5), doublestage piston (6), front end housing (24), bent axle (28), high efficiency motor (1) provides the power supply, bent axle (28) set up inside box (4), built-in elastic coupling of high efficiency motor (1) directly allies oneself with driving crankshaft (28), be provided with connecting rod piston assembly (2) on bent axle (28) preceding, back opposition eccentric crank. The novel oil-free piston type air compressor adopts a low-stroke double-crank transmission structure and is assisted by an integrated internal-ventilation two-stage double-acting piston, so that the exhaust pressure is improved, and the acting force of the piston is reduced; the double-cylinder double-acting piston enables the torque output of the motor to be balanced, is efficient and energy-saving, and greatly reduces the operation vibration; the arrangement design of the double-stage piston in the double cylinders of the box body and the integrated valve plate of the inner air channel greatly reduces the running noise of the unit.
Description
Technical Field
The utility model relates to an automobile air compression equipment technical field, concretely relates to novel automobile-used electric drive does not have oily piston air compressor.
Background
The automobile air compressor is mainly used for providing necessary air sources for automobile braking technology, suspension systems, opening and closing of automobile doors and auxiliary pneumatic devices. At present, the air compressor for the vehicle mainly has sliding vane type, screw, vortex formula, piston air compressor etc. and general operating pressure is low excessively, and the common compressor mostly is the oily air compressor machine, and there is congenital weakness in the gyration type compressor such as oilless vortex, screw rod in the oilless piston type comparison: noise, vibrations, consumption, volume are great relatively, along with new forms of energy electric motor car rapid development, have provided higher demand to aspects such as automobile-used air compressor NVH.
In the prior art, chinese utility model with publication number CN208236606U discloses a piston type oil-free air compressor, a motor box is fixed on the outer wall of one side of a crankcase, a first motor is fixed on the inner wall of one side of the crankcase, a first motor output shaft is connected with a first rotating shaft horizontally arranged, one end of the first rotating shaft, which is far away from the first motor, passes through the outer wall of the crankcase and is connected to one inner wall of the crankcase in a rotating manner, an inverted U-shaped crankshaft is arranged at the middle position of the first rotating shaft, a piston rod vertically arranged is connected to the middle position of the top end of the crankshaft in a rotating manner, a cylinder is fixed at the middle position of the top end of the crankcase, the cylinder is communicated with the crankcase, a piston horizontally arranged is fixed at the top end of the piston rod, the reciprocating piston type oil-free air compressor with the structure can effectively reduce the temperature of the, Vibration reduction and the like. The Chinese patent application with the publication number of CN107917059A provides an oil-free piston type air compressor, which mainly comprises a motor, a motor main shaft, a crankcase, a flywheel shaft and a connecting rod, wherein the crankcase and piston cylinders are horizontally oppositely arranged on two sides of the crankcase, exhaust valve plates are respectively arranged on the outer sides of the two piston cylinders, the motor is fixed at the tail part of the crankcase through bolts, the motor main shaft is directly connected with the flywheel shaft to drive the flywheel shaft to rotate, and the flywheel shaft is placed in the crankcase through a bearing support bearing.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical defect existing in the prior art, the utility model provides a novel oil-free piston air compressor. The novel oil-free piston type air compressor adopts a low-stroke double-crank transmission structure and is assisted by an integrated internal-ventilation double-acting double-stage piston, so that the exhaust pressure is improved, and the acting force of the piston is reduced; the double-cylinder double-acting piston enables the torque output of the motor to be balanced, is efficient and energy-saving, and greatly reduces the operation vibration; the arrangement design of the double-stage piston in the double cylinders of the box body and the integrated valve plate of the inner air channel greatly reduces the running noise of the unit.
In order to achieve the above purpose, the present invention adopts the following technical solution.
The utility model discloses a novel oil-free piston type air compressor, which comprises a high-efficiency motor, a box body, a cylinder cover, a two-stage piston, a front end cover and a crankshaft, wherein the high-efficiency motor provides a power source, and the crankshaft is arranged in the box body; an elastic coupling is arranged in the high-efficiency motor and directly connected with a driving crankshaft; and connecting rod piston assemblies are arranged on the front and rear opposite eccentric cranks of the crankshaft and are placed in cylinder holes of the box body.
Preferably, the dual-stage piston is an internally vented dual-stage compression double-acting piston.
In any one of the above technical solutions, preferably, the connecting rod piston assembly is split, a rolling bearing is disposed in a small end of the connecting rod piston assembly, and two sides of the connecting rod piston assembly are respectively provided with a protective oil seal, and the connecting rod piston assembly is connected with the double-stage piston through a piston pin.
In any of the above technical solutions, preferably, the piston pin is provided with hole retainer rings on both sides, and a damping heat insulation sleeve can be arranged on the ring side.
In any of the above-described embodiments, it is preferable that the opening groove of the piston pin is filled with lubricating grease and sealed by a fastening screw.
In any one of the above technical schemes, preferably, the double-stage piston end surface air inlet channel is fixed with a first-stage air inlet valve plate I through a turnup bolt.
In any of the above technical solutions, it is preferable that a valve plate ii integrating the functions of first-stage exhaust and second-stage intake is fixed on a plurality of second-stage intake channels inside the two-stage piston through a valve plate.
In any of the above technical solutions, preferably, the two-stage piston end face to the lower ring side are sequentially provided with a low-pressure stage auxiliary support guide ring, a first-stage and second-stage compression sealing double-acting piston ring i, a high-pressure piston ring ii, and a high-pressure stage support guide ring.
In any of the above technical solutions, preferably, the two-stage pistons in the front and rear cylinders of the crankshaft are respectively provided with a first-stage intake valve plate i.
In any of the above technical solutions, preferably, the high-efficiency motor is provided with a coupling driven end, an elastic body and an internal coupling driving end; the high-efficiency motor spindle is matched with the driving end of the built-in coupling through a taper hole to drive the elastic body to flexibly transmit to the driven end of the coupling, and the elastic body is fixed on the rear side of the crankshaft through taper hole matching and bolts.
In any of the above technical solutions, preferably, a maintenance-free bearing three is disposed on each of the two balance weight outboard journals of the crankshaft.
In any of the above solutions, it is preferable that the front and rear opposite eccentric cranks of the crankshaft are provided with maintenance-free bearings to connect the connecting rod piston assembly.
In any of the above technical solutions, preferably, the exhaust hole on the lower side of the cylinder wall of the cylinder body composed of the two-stage piston end face, the cylinder hole of the box body and the cylinder cover is provided with a plurality of high-pressure exhaust valves, the valve sheet of the high-pressure exhaust valves is an annular valve, a mesh valve, a reed valve or a plate-shaped valve, and the outer side of the valve sheet is provided with a porous silencing steady-flow distance limiting plate.
In any of the above-described embodiments, the cylinder block including the double-stage piston end surface, the case cylinder hole, and the cylinder head is preferably further provided with an exhaust joint for exhausting high-pressure gas and a cover plate for hermetically dissipating heat.
Preferably, in any one of the above technical solutions, the crankshaft is further provided with a driven end of a magnetic coupling, a centrifugal fan and a driving end of the magnetic coupling, the driving end of the magnetic coupling is fixed at the front side of the crankshaft, the centrifugal fan is fixed at the driven end of the magnetic coupling, and the driven end of the magnetic coupling is fixed at the front end cover through a maintenance-free bearing.
In any of the above technical solutions, preferably, a retainer ring and a second protective oil seal are sequentially arranged on the outer side of the first maintenance-free bearing.
In any of the above technical solutions, preferably, a flow guide cover is provided outside the centrifugal fan.
In any of the above technical solutions, preferably, air inlet joints are further disposed on two sides of the box body.
In any one of the above technical solutions, preferably, the novel oil-free piston type air compressor is further provided with a bracket and a rubber damping pad.
Compared with the prior art, the above technical scheme of the utility model following beneficial effect has:
a low-stroke double-crank transmission structure is adopted, and an integrated double-stage double-acting piston is used as an auxiliary, so that the exhaust pressure is increased, and the acting force of the piston is reduced; the double-cylinder double-acting piston enables the torque output of the motor to be balanced, is efficient and energy-saving, and greatly reduces the operation vibration; the arrangement design of the double-stage piston in the double cylinders of the box body and the integrated valve plate of the inner air channel greatly reduces the running noise of the unit.
Furthermore, the utility model discloses a novel oil-free piston air compressor still has advantages such as small, light in weight, high protection IP68 grade, from taking cooling, oil-free compressed air source cleanness.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a front view of a preferred embodiment of the novel oil-free piston air compressor according to the present invention;
fig. 2 is a schematic diagram of a structure in a direction a-a of the novel oil-free piston type air compressor shown in fig. 1.
Reference numerals:
1. the high-efficiency motor comprises a high-efficiency motor 2, a piston connecting rod assembly 3, a piston pin 4, a box body 5, a cylinder cover 6, a double-stage piston 7, a high-pressure stage supporting guide ring 8, a high-pressure piston ring II, a high-pressure piston ring 9, a first-stage air inlet valve plate I, a first-stage air inlet valve plate 10, a turnup bolt 11, a valve plate 12, a valve plate II, a valve plate 13, a low-pressure stage auxiliary supporting guide ring 14, a piston ring I, a high-pressure piston ring 15, a rolling bearing 16, a flow guide cover 17, a tightening screw 18, a hole check ring 19, a protective oil seal I, a protective oil seal II, a magnetic coupling driven end 21, a magnetic coupling driven end 22, a centrifugal fan 23, a maintenance-free bearing I, a maintenance bearing 24, a front end cover 25, a magnetic coupling driving end 26, a maintenance-free bearing II, a maintenance bearing II, 27, a maintenance, High-pressure exhaust valve, 35, cover plate, 36, air inlet joint, 37 and exhaust joint.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The general operating pressure who exists in order to overcome car air compression equipment crosses lowly, and common compressor mostly is there oily air compressor machine, and there is technical defect problems such as congenital weak potential such as noise, vibrations, consumption, volume great relatively in gyration type compressors such as no oily vortex, screw rod that oil-free piston compares, the embodiment of the utility model provides a novel vehicle electric drive does not have oily piston air compressor.
As shown in fig. 1 and 2, the novel oil-free piston type air compressor of the present embodiment includes a high-efficiency motor 1, a case 4, a cylinder head 5, a two-stage piston 6, a front end cover 24, and a crankshaft 28; the high-efficiency motor 1 is used for providing a power source for the equipment, and the crankshaft 28 is arranged in the box body 4; the high-efficiency motor 1 is internally provided with an elastic coupling direct-connection driving crankshaft 28; the crankshaft 28 is provided with connecting rod piston components 2 on the front and back opposite eccentric cranks and is placed in a cylinder hole of the box body 4.
The novel oil-free piston type air compressor of the embodiment has the double-stage piston 6 which is an internal-ventilation double-stage compression double-acting piston.
In the novel oil-free piston type air compressor of the embodiment, the connecting rod piston assembly 2 is split; the inside of the small end of the connecting rod piston component 2 is provided with a rolling bearing 15, two sides of the connecting rod piston component are provided with a protective oil seal 19, and the connecting rod piston component is connected with the double-stage piston 6 through a piston pin 3.
The novel oil-free piston type air compressor of the embodiment is characterized in that retainer rings 18 for holes are arranged on two sides of a piston pin 3, and a damping heat insulation sleeve can be arranged on the ring side.
In the oil-free piston air compressor of the present embodiment, the lubricant grease is filled in the opening groove of the piston pin 3, and is sealed by the fastening screw 17.
The novel oil-free piston type air compressor of the embodiment is fixed with a first-stage air inlet valve block I9 on a 6-end-face air inlet channel of a double-stage piston through a turnup bolt 10.
The novel oil-free piston type air compressor of the embodiment is characterized in that a valve block II 12 integrating the functions of primary exhaust and secondary intake is fixed on a plurality of secondary air inlets in the double-stage piston 6 through a valve plate 11.
The novel oil-free piston type air compressor of the embodiment has the advantages that the low-pressure-level auxiliary supporting guide ring 13, the piston ring I14 with one-level and two-level compression sealing double-acting functions, the high-pressure piston ring II 8 and the high-pressure-level supporting guide ring 7 are sequentially arranged from the end face of the double-stage piston 6 to the lower ring side.
In the novel oil-free piston type air compressor of the embodiment, a first-stage air inlet valve block I9 is uniformly arranged on a two-stage piston 6 in a front cylinder and a rear cylinder of a crankshaft 28.
In the novel oil-free piston type air compressor of the embodiment, the high-efficiency motor 1 is provided with a coupling driven end 29, an elastic body 30 and an internal coupling driving end 31; the main shaft of the high-efficiency motor 1 is matched with the driving end 31 of the built-in coupling through a taper hole, drives the elastic body 30 to flexibly transmit to the driven end 29 of the coupling, and is fixed on the rear side of the crankshaft 28 through taper hole matching and bolts.
In the novel oil-free piston type air compressor of the embodiment, a maintenance-free bearing III 27 is arranged on the two balance block outer side journals of the crankshaft 28.
In the novel oil-free piston type air compressor of the embodiment, the front and rear opposite eccentric cranks of the crankshaft 28 are respectively provided with a second maintenance-free bearing 26 for connecting the connecting rod piston assembly 2.
The novel oil-free piston type air compressor of the embodiment is characterized in that a plurality of high-pressure exhaust valves 34 are arranged on exhaust holes on the lower side of the cylinder wall of a cylinder body consisting of a double-stage piston 6 end face, a cylinder hole of a box body 4 and a cylinder cover 5, a valve block of the novel oil-free piston type air compressor is an annular valve, a mesh valve, a reed valve or a plate-shaped valve, and a porous silencing and flow-stabilizing distance limiting plate is arranged on the.
The cylinder body formed by the end surface of the double-stage piston 6, the cylinder hole of the box body 4 and the cylinder cover 5 is also provided with an exhaust joint 37 for exhausting high-pressure gas and a cover plate 35 for sealing and radiating.
In the novel oil-free piston type air compressor of the embodiment, the crankshaft 28 is further provided with a driven end 21 of a magnetic coupling, a centrifugal fan 22 and a driving end 25 of the magnetic coupling; the driving end 25 of the magnetic coupling is fixed on the front side of the crankshaft 28, the centrifugal fan 22 is fixed on the driven end 21 of the magnetic coupling, and the driven end 21 of the magnetic coupling is fixed on the front end cover 24 through a maintenance-free bearing I23.
The novel oil-free piston type air compressor of the embodiment has the check ring and the protective oil seal 20 arranged in sequence outside the maintenance-free bearing I23.
In the novel oil-free piston type air compressor of the embodiment, the air guide sleeve 16 is arranged outside the centrifugal fan 22.
The novel oil-free piston type air compressor of the embodiment is also provided with air inlet joints 36 at two sides of the box body 4.
The novel oil-free piston type air compressor of the present embodiment is further provided with a bracket 32 and a rubber damper pad 33.
The novel oil-free piston type air compressor of the embodiment can further reduce the height by adopting a horizontal layout, can also adopt the design of increasing a plurality of groups of cylinder heads to promote the discharge capacity, and can be of a horizontal opposed, V-shaped and double-head vertical structure.
The novel oil-free piston type air compressor of the embodiment can also adopt an external sound-proof housing to be assisted by an internal water cooling structure, so that the noise is further reduced.
The working principle and working process of the novel oil-free piston type air compressor of the embodiment are further described in the following with reference to fig. 1 and fig. 2.
As shown in fig. 1, the novel oil-free piston type air compressor of the embodiment initiates an integrated double-acting two-stage compression piston, and is assisted by double-crank internal double-support crankshaft transmission, and oil-free lubrication compression is realized by adopting self-lubricating material piston ring guide rings such as composite polytetrafluoroethylene. The high-efficiency motor 1 supplies power, the direct-connection elastic coupling drives the crankshaft 28, the piston connecting rod assembly 2 is arranged at the front eccentric crank and the rear eccentric crank of the crankshaft 28 to do up-and-down reciprocating motion, and first-stage air inlet valve plates I9 are uniformly distributed on the pistons in the front cylinder and the rear cylinder. In the embodiment, a valve plate II 12 integrating the functions of first-stage exhaust and second-stage air inlet is adopted, when a piston in a front-side cylinder moves from an upper dead point to a lower dead point, the valve plate II 12 is closed, the volume formed by the end surface of a double-stage piston 6, a cylinder hole of a box body 4 and a cylinder cover 5 is gradually increased to generate negative pressure, at the moment, a first-stage air inlet valve plate I9 is opened, air is sucked into the cylinder from an air passage below the double-stage piston 6, the volume in the cylinder formed by the lower side of the double-stage piston 6 is gradually reduced, the air is compressed, the air pressure is increased until the second-stage air outlet valve plate III is; meanwhile, the two-stage piston 6 in the rear cylinder moves from the bottom dead center to the top dead center, the one-stage air inlet valve plate I9 is closed, the volume in the cylinder formed above the two-stage piston 6 is gradually reduced, the gas is compressed, the air pressure is increased to push the valve plate II 12 to be opened, meanwhile, the volume in the cylinder formed at the lower side of the two-stage piston 6 is gradually increased to generate negative pressure, the gas after the one-stage compression enters the cylinder at the lower side of the two-stage piston 6, and the first compression of the gas is completed at the moment. When the two-stage piston 6 in the front side cylinder moves from the lower dead point to the upper dead point, the first-stage air inlet valve plate I9 is closed, the volume in the cylinder formed above the two-stage piston 6 is reduced, the gas is compressed, the air pressure is increased to push the valve plate II 12 to be opened, meanwhile, the volume in the cylinder formed at the lower side of the two-stage piston 6 is gradually increased to generate negative pressure, and the gas after once compression enters the cylinder at the lower side of the two-stage piston 6; meanwhile, the two-stage piston 6 in the rear cylinder moves from the top dead center to the bottom dead center, the valve plate II 12 is closed at the moment, the volume in the cylinder formed above the two-stage piston 6 is gradually increased to generate negative pressure, the first-stage air inlet valve plate I9 is opened, air is sucked into the cylinder on the two-stage piston 6 from an air passage below the two-stage piston 6, the volume in the cylinder formed below the two-stage piston 6 is gradually reduced, the air is compressed, the air pressure is increased until the second-stage air outlet valve plate III is pushed to be discharged, and the second compression of the air is completed; the motor rotates for a circle, the two-stage pistons 6 in the cylinders at the front side and the rear side reciprocate once alternately, gas in each cylinder is compressed twice, and the process repeatedly shows that the gas is continuously compressed and discharged. The front side of the crankshaft 28 drives the centrifugal fan 22 to rotate through a magnetic coupling to generate wind power, the cylinder head is cooled through the air guide sleeve 16, the cylinder head is completely isolated from the inside of the box through magnetic transmission, and the whole machine reaches the IP68 protection grade.
The present embodiment shown in fig. 1 and 2 may adopt a vertical layout or a horizontal layout. A main shaft of the high-efficiency motor 1 is matched with a driving end 31 of an internal coupling through a taper hole to drive an elastic body 30 to flexibly transmit to a driven end 29 of the coupling, and the main shaft is fixed on the rear side of a crankshaft 28 through taper hole matching and a bolt; a bearing maintenance-free bearing III 27 is uniformly arranged on the outer side journals of two balance blocks of a crankshaft 28, the crankshaft 28 is arranged in the box body 4 through the bearing, a maintenance-free bearing II 26 is arranged on the front and back opposite eccentric cranks of the crankshaft 28 and is connected with a piston connecting rod assembly 2, the piston connecting rod assembly 2 can also adopt a split type, a rolling bearing 15 is arranged in the small end of the piston connecting rod assembly 2, two sides of the rolling bearing are protection oil seals I19 and are connected with a two-stage piston 6 through a piston pin 3, two sides of the piston pin 3 are hole check rings 18, a hole groove of the piston pin 3 is filled with lubricating grease and sealed through a tightening screw 17; a first-stage air inlet valve plate I9 is fixed on an end face air inlet channel of the double-stage piston 6 through a turnup bolt 10, valve plates II 12 integrating first-stage exhaust and second-stage air inlet functions are fixed on a plurality of second-stage air inlet channels in the double-stage piston 6 through valve plates 11, and a low-pressure-stage auxiliary support guide ring 13, a double-acting piston ring I14 for starting first-stage and second-stage compression sealing, a high-pressure piston ring II 8 and a high-pressure-stage support guide ring 7 are sequentially arranged from the end face to the lower ring side of the double-; a plurality of high-pressure exhaust valves 34 are arranged on the exhaust holes at the lower side of the cylinder wall, wherein the valve plates can be annular valves, net-shaped valves, reed valves, plate-shaped valves and the like, and porous silencing and flow-stabilizing stroke-limiting plates are arranged on the outer sides of the valve plates; the exhaust valves on two sides are communicated through internal air passages, high-pressure gas is exhausted from the exhaust joint 37, the other side is sealed through the cover plate 35 for heat dissipation, and a safety valve can also be arranged.
A driving end 25 of a magnetic coupling is fixed on the front side of the crankshaft 28, a centrifugal fan 22 is fixed on a driven end 21 of the magnetic coupling, the driven end 21 of the magnetic coupling is fixed on a front end cover 24 through a maintenance-free bearing I23, and a retainer ring and a protective oil seal II 20 are sequentially arranged on the outer side of the bearing; the outer side of the centrifugal fan 22 is provided with a flow guide cover 16, when the centrifugal fan works, the fan 28 drives the centrifugal fan 22 to rotate through the magnetic coupling, airflow is sucked from the front side hole of the flow guide cover 16, and the airflow is blown out from the upper side and cools the cylinder head through the flow guide cover 16. In addition, air inlet connectors 36 are arranged on two sides of the box body 4, and the whole machine is placed on the rubber damping pad 33 through a support frame 32.
The novel oil-free piston air compressor of this embodiment, its magnetic drive purpose: firstly, the complete isolation between the fan and the inside of a crankcase is ensured to reach the IP68 protection grade, and the problems that the traditional shaft extension fan adopts oil seal protection, backflushing airflow and negative pressure are generated inside the air compressor when the air compressor works, the sealing performance is poor, and the sealing performance is reduced and is volatile after the rubber part is aged for a long time in the later period are solved; the axial and radial compensation capability is achieved, and the transmission damage caused by the non-concentricity problem due to part processing and assembling errors is avoided; thirdly, play the guard action, in case the fan blocks, cut off and main shaft drive, avoid the inside damage of machine. Magnetic force transmission embodiment: the eccentric crank department of magnetic coupling initiative end 25 one side is fixed in on 28 cranks of bent axle through the bolt, the permanent magnet has been arranged on the 25 inner walls of magnetic coupling initiative end, two adjacent magnets are the opposite arrangement, the permanent magnet that two adjacent magnetic poles are opposite has also been arranged on the 21 excircle of magnetic coupling driven end, when static, it is main, the north pole and south pole inter attraction of driven end magnet, magnetic field is the complete symmetry, when the initiative end rotates, magnetic field produces the deflection, the magnetic force that produces drives the driven end rotation, the driven end is fixed on front end housing 24 through a non-maintaining bearing, play the cage effect, guarantee with the inside complete isolation of box 4, in addition the bearing outside has still been arranged the preliminary isolation dust protection bearing of oil blanket, axial fan passes through the bolt fastening also can adopt interference pressure equipment on the driven end, the key, the connection such.
The novel oil-free piston type air compressor of the embodiment adopts a low-stroke double-crank transmission structure and is assisted by an integrated double-stage double-acting piston, so that the exhaust pressure is increased, and the acting force of the piston is reduced; the double-cylinder double-acting piston enables the torque output of the motor to be balanced, is efficient and energy-saving, and greatly reduces the operation vibration; the arrangement design of the double-stage piston in the double cylinders of the box body and the integrated valve plate of the inner air channel greatly reduces the running noise of the unit. In addition, the vehicle electric-driven oil-free piston type air compressor of the embodiment also has the advantages of small volume, light weight, high protection IP68 grade, self-contained cooling, cleaning of an oil-free compressed air source and the like.
The above description is only intended to describe the preferred embodiments of the present invention, and not to limit the scope of the present invention; the above description is only a specific embodiment of the present invention, and is not intended to limit the scope of the present invention; without departing from the spirit of the present invention, any modification, equivalent replacement, or improvement made by the technical solution of the present invention by those of ordinary skill in the art should fall within the protection scope defined by the claims of the present invention.
Claims (19)
1. The utility model provides a novel oil-free piston air compressor, includes high-efficient motor (1), box (4), cylinder cap (5), doublestage piston (6), front end housing (24), bent axle (28), high-efficient motor (1) provides the power supply, bent axle (28) set up inside box (4), its characterized in that: an elastic coupling direct-connection driving crankshaft (28) is arranged in the high-efficiency motor (1); the front and rear opposite eccentric cranks of the crankshaft (28) are provided with connecting rod piston assemblies (2) and are placed in cylinder holes of the box body (4).
2. An oil-free piston air compressor as claimed in claim 1, wherein: the double-stage piston (6) is an internal-ventilation double-stage compression double-acting piston.
3. An oil-free piston air compressor as claimed in claim 1, wherein: the connecting rod piston assembly (2) is split, a rolling bearing (15) is arranged in the small end of the connecting rod piston assembly, protective oil seals (19) are arranged on two sides of the connecting rod piston assembly, and the connecting rod piston assembly is connected with the double-stage piston (6) through a piston pin (3).
4. An oil-free piston air compressor as claimed in claim 3, wherein: retainer rings (18) for holes are arranged on two sides of the piston pin (3), and a damping heat-insulating sleeve is arranged on the ring side.
5. An oil-free piston air compressor as claimed in claim 3, wherein: and lubricating grease is filled in a hole groove of the piston pin (3) and is sealed by a fastening screw (17).
6. An oil-free piston air compressor as claimed in claim 3, wherein: and a first-stage air inlet valve plate I (9) is fixed on the end face air inlet channel of the double-stage piston (6) through a turnup bolt (10).
7. An oil-free piston air compressor as claimed in claim 3, wherein: and a plurality of second-stage air inlet channels in the double-stage piston (6) are fixedly provided with valve plates II (12) which integrate the functions of first-stage exhaust and second-stage air inlet into a whole through valve plates (11).
8. An oil-free piston air compressor as claimed in claim 3, wherein: and a low-pressure-stage auxiliary supporting guide ring (13), a piston ring I (14) with double functions of primary and secondary compression sealing, a high-pressure piston ring II (8) and a high-pressure-stage supporting guide ring (7) are sequentially arranged from the end face of the two-stage piston (6) to the side of the lower ring.
9. An oil-free piston air compressor as claimed in claim 1, wherein: and a first-stage air inlet valve plate I (9) is respectively arranged on the two-stage piston (6) in the front cylinder and the rear cylinder of the crankshaft (28).
10. An oil-free piston air compressor as claimed in claim 1, wherein: the high-efficiency motor (1) is provided with a coupling driven end (29), an elastic body (30) and a built-in coupling driving end (31); a main shaft of the efficient motor (1) is matched with a built-in coupling driving end (31) through a taper hole to drive an elastic body (30) to flexibly transmit to a coupling driven end (29), and the main shaft is fixed on the rear side of a crankshaft (28) through taper hole matching and bolts.
11. An oil-free piston air compressor as claimed in claim 1, wherein: and a maintenance-free bearing III (27) is uniformly arranged on the outer side journal of the two balance weights of the crankshaft (28).
12. An oil-free piston air compressor as claimed in claim 1, wherein: and a second maintenance-free bearing (26) is arranged on each of the front and rear opposite eccentric cranks of the crankshaft (28) to be connected with the connecting rod piston assembly (2).
13. An oil-free piston air compressor as claimed in claim 1, wherein: a plurality of high-pressure exhaust valves (34) are arranged on exhaust holes at the lower side of the cylinder wall of the cylinder body consisting of the end surface of the double-stage piston (6), the cylinder hole of the box body (4) and the cylinder cover (5), the valve block of the high-pressure exhaust valve is an annular valve, a net-shaped valve, a reed valve or a plate-shaped valve, and a porous silencing and flow-stabilizing distance limiting plate is arranged on the outer side of the valve block.
14. An oil-free piston air compressor as claimed in claim 1, wherein: the cylinder body formed by the end surface of the double-stage piston (6), the cylinder hole of the box body (4) and the cylinder cover (5) is also provided with an exhaust joint (37) for exhausting high-pressure gas and a cover plate (35) for sealing and radiating.
15. An oil-free piston air compressor as claimed in claim 1, wherein: the crankshaft (28) is further provided with a driven end (21) of a magnetic coupling, a centrifugal fan (22) and a driving end (25) of the magnetic coupling, the driving end (25) of the magnetic coupling is fixed to the front side of the crankshaft (28), the centrifugal fan (22) is fixed to the driven end (21) of the magnetic coupling, and the driven end (21) of the magnetic coupling is fixed to the front end cover (24) through a maintenance-free bearing I (23).
16. An oil-free piston air compressor as claimed in claim 15, wherein: and a check ring and a protective oil seal II (20) are sequentially arranged on the outer side of the maintenance-free bearing I (23).
17. An oil-free piston air compressor as claimed in claim 15, wherein: and a flow guide cover (16) is arranged on the outer side of the centrifugal fan (22).
18. An oil-free piston air compressor as claimed in claim 1, wherein: and air inlet joints (36) are arranged on two sides of the box body (4).
19. An oil-free piston air compressor as claimed in claim 1, wherein: the novel oil-free piston type air compressor is also provided with a support (32) and a rubber damping pad (33).
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| CN201920272380.2U CN209908692U (en) | 2019-03-04 | 2019-03-04 | Novel oil-free piston type air compressor |
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| CN201920272380.2U CN209908692U (en) | 2019-03-04 | 2019-03-04 | Novel oil-free piston type air compressor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109707594A (en) * | 2019-03-04 | 2019-05-03 | 瑞立集团瑞安汽车零部件有限公司 | A kind of novel oil-free piston type air compressor |
| CN114076080A (en) * | 2020-08-17 | 2022-02-22 | 江西杰豹机电有限公司 | Novel oilless piston type air compressor |
| CN114576137A (en) * | 2022-03-29 | 2022-06-03 | 浙江瑞立空压装备有限公司 | Oil-free air compressor |
| CN116066322A (en) * | 2023-04-06 | 2023-05-05 | 四川丹甫环境科技有限公司 | Compression structure and air compressor comprising same |
| CN117967544A (en) * | 2024-04-02 | 2024-05-03 | 江苏航宇环境科技有限公司 | Air compressor |
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2019
- 2019-03-04 CN CN201920272380.2U patent/CN209908692U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109707594A (en) * | 2019-03-04 | 2019-05-03 | 瑞立集团瑞安汽车零部件有限公司 | A kind of novel oil-free piston type air compressor |
| CN114076080A (en) * | 2020-08-17 | 2022-02-22 | 江西杰豹机电有限公司 | Novel oilless piston type air compressor |
| CN114576137A (en) * | 2022-03-29 | 2022-06-03 | 浙江瑞立空压装备有限公司 | Oil-free air compressor |
| CN116066322A (en) * | 2023-04-06 | 2023-05-05 | 四川丹甫环境科技有限公司 | Compression structure and air compressor comprising same |
| CN116066322B (en) * | 2023-04-06 | 2023-07-04 | 四川丹甫环境科技有限公司 | Compression structure and air compressor comprising same |
| CN117967544A (en) * | 2024-04-02 | 2024-05-03 | 江苏航宇环境科技有限公司 | Air compressor |
| CN117967544B (en) * | 2024-04-02 | 2024-05-28 | 江苏航宇环境科技有限公司 | Air compressor |
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Effective date of registration: 20210625 Address after: No.2666, Development Zone Avenue, Ruian Economic Development Zone, Wenzhou City, Zhejiang Province, 325200 Patentee after: Zhejiang Ruili air compressor equipment Co.,Ltd. Address before: 325299 2666 Development Zone, Ruian Economic Development Zone, Wenzhou, Zhejiang Patentee before: Ruili Group Ruian Auto Parts Co.,Ltd. |