An average rotary screw air flow Screw Air Compressor china compressor has two interlocking helical rotors contained in a housing. Air will come in through a valve, typically called the inlet valve and can be taken in to the space between your rotors. As the screws convert, they reduce the level of the air, thus increasing the pressure.
The center of an air compressor may be the screw element which can be called air-end. The air-end is the most important component of any screw-type compressor. It’s that section of the machine where in fact the actual compression takes place. It is the center of the rotary screw surroundings compressor.
A Rotary Screw Surroundings 
Compressor is a compressor that runs on the rotary-type positive displacement mechanism, called a rotary screw, air-end. … Rotary Screw Compressors also use two inter-twined helical formed screws, known as rotors, to compress the air flow.