Working principle of oil-free mute air compressor: oil-free mute air compressor is a miniature piston compressor. When the motor single shaft drives the compressor crankshaft to rotate, it is self-lubricating without adding any lubricant through the transmission of the connecting rod. The piston reciprocates. The working volume formed by the inner wall of the cylinder, the cylinder head and the top surface of the piston will periodically change.

When the piston of the piston compressor starts to move from the cylinder head, the working volume in the cylinder gradually increases → the gas is along the intake pipe, pushing the intake valve into the cylinder, until the working volume reaches the maximum, the intake air Valve closed → When the piston of the piston compressor moves in the reverse direction, the working volume in the cylinder shrinks and the gas pressure increases. When the pressure in the cylinder reaches and is slightly higher than the exhaust pressure, the exhaust valve opens and the gas exits the cylinder until the piston The exhaust valve is closed until it reaches the limit position. When the piston of the piston compressor moves again in the reverse direction, the above process repeats itself.

That is, the crankshaft of the piston compressor rotates once, the piston reciprocates once, and the intake, compression, and exhaust processes are successively realized in the cylinder, that is, a working cycle is completed. The single-shaft double-cylinder structure design makes the compressor gas flow double that of a single cylinder when the rated speed is fixed, and it is well controlled in vibration and noise control.