Oil-free mute air compressor belongs to the miniature reciprocating piston compressor, the motor single shaft drive compressor crankshaft rotation, through the connecting rod drive, with self-lubricating without adding any lubricant of the piston will do reciprocating motion. By the inner wall of the cylinder, the cylinder head and the piston top surface of the work of the volume will be a cyclical change.

Piston compressor piston from the cylinder head at the beginning of the movement, the working volume of the cylinder gradually increased → gas that is along the inlet pipe, push open the inlet valve and into the cylinder, until the working volume to the maximum until the inlet valve closed → piston compressor piston reverse movement, the working volume in the cylinder is reduced, the gas pressure rises, when the pressure in the cylinder to reach and slightly higher than the exhaust pressure, the exhaust valve opens, the gas out of the cylinder, the exhaust valve opens, the gas out of the cylinder. When the pressure in the cylinder reaches and is slightly higher than the discharge pressure, the exhaust valve opens and the gas is discharged from the cylinder until the piston moves to the limit position, and the exhaust valve closes. When the piston of the piston compressor again reverse movement, the above process is repeated.

That is, the crankshaft of the piston compressor rotates for one week, the piston reciprocates once, and the cylinder realizes the process of inlet, compression and exhaust, which completes a working cycle. Single axis double cylinder structure design makes the compressor gas flow at a certain rated speed for the single cylinder twice, and in the vibration noise control has been well controlled.

The working principle of the whole machine: the motor runs, the air enters the compressor through the air filter, the compressor compresses the air, and the compressed gas enters the storage tank through the air flow pipeline and opens the check valve, and the pressure gauge shows that the pressure rises up to 8Bar. Greater than 8Bar, the pressure switch sensing channel pressure automatically shut down, the motor stops working, at the same time the solenoid valve compressor head air pressure discharge to 0. At this time, the air switch pressure declaration, the gas pressure in the storage tank is still 8Bar, the gas through the ball valve exhaust drive connected to the equipment work. When the gas pressure in the storage tank drops to 5Bar, the pressure switch opens automatically by induction and the compressor starts working again.