A typical Screw Air Compressor china Rotary screw surroundings compressor has two interlocking helical rotors within a housing. Air will come in through a valve, typically called the inlet valve and can be taken in to the space between the rotors. As the screws switch, they reduce the level of the air, therefore increasing the pressure.
The center of an air compressor is the screw element which is also called air-end. The air-end can be the most important component of any screw-type compressor. It’s that part of the machine where in fact the actual compression takes place. It is the cardiovascular of the rotary screw air compressor.
A Rotary Screw Air flow 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 shaped screws, referred to as rotors, to compress the atmosphere.