2022-03-12
The principle and characteristics of screw air compressor and ordinary air compressor
The main compressor is divided into piston, screw and centrifugal. Pistons are rarely used now, old machines. Use a screw with a small amount of gas and centrifuge with a large amount of gas.
Structure and working principle
1. Piston oil-free lubricated air compressor
Piston oil-free lubricated air compressor is composed of compressor main unit, cooling system, regulating system, lubrication system, safety valve, motor and control equipment. The compressor and the motor are fastened to the base with bolts, and the base is fixed to the foundation with anchor bolts. When working, the motor directly drives the crankshaft through the coupling, drives the connecting rod, the crosshead and the piston rod, and makes the piston reciprocate in the compressor cylinder to complete the suction, compression, and discharge processes. The machine is a double-acting compressor, that is, the piston moves upwards and downwards, all have air suction, compression and discharge.
2. Screw air compressor
Screw air compressor is composed of screw head, motor, oil and gas separation barrel, cooling system, air conditioning system, lubrication system, safety valve and control system. The whole machine is installed in a box, which is self-contained and can be placed directly on the flat concrete floor without fixing it with anchor bolts. The screw head is a kind of dual-shaft displacement rotary compressor head. A pair of high-precision main (male) and auxiliary (female) rotors are installed horizontally and parallel inside the casing. The main (male) rotor has 5 teeth and the auxiliary (female) rotor has 6 teeth. The main rotor has a large diameter and the auxiliary rotor has a small diameter. The teeth form a spiral shape, and the two mesh with each other. Both ends of the main and auxiliary rotors are respectively supported and positioned by bearings. During operation, the motor directly brings the main rotor through the coupling (or belt). Si