A typical rotary screw atmosphere compressor has two interlocking helical rotors contained in a housing. Air comes in through a valve, typically Screw Air Compressor china called the inlet valve and is usually taken into the space between the rotors. As the screws switch, they reduce the volume of the air, hence increasing the pressure.
The cardiovascular of an air compressor is the screw element which is also called air-end. The air-end is definitely the most important part of any screw-type compressor. It’s that part of the machine where the actual compression occurs. It is the center of the rotary screw air flow compressor.
A Rotary Screw Air Compressor is a compressor that uses a rotary-type 
positive displacement system, called a rotary screw, air-end. … Rotary Screw Compressors also make use of two inter-twined helical shaped screws, referred to as rotors, to compress the surroundings.