The rotary screw is owned by the positive displacement compressor household. Positive displacement pumps produce flow by employing a growing cavity on the suction side and a diminishing cavity on the discharge side.  

The gas that's trapped within the positive displacement machine is a fixed quantity that is then compacted or displaced to the discharge manifold. If you want to know more about the rotary screw air compressors, then search the browser.

Image Source Google

The two most commonly used compressors now are the rotary screw (helical rotor) and the reciprocating piston.

Compared to the two, the rotary screw doesn't use valves, is lighter in weight compared to the reciprocating piston, is pulsation free making base requirements less intense, and preserves its design efficiency over usable time since the rotors never come in contact with one another.  

The screw compressor was originally designed in the mid-1950s and finally developed to function between the reciprocating piston and centrifugal machine capacities for commercial, gas, and industrial type software. 

The rotary screw compressor is made up of two intermeshing helical rotors found in housing. Clearance between the rotors and between the home and the rotors is typically.003" to.005".  The man or drive is connected via a rotating extension by an electric motor or engine.  

In the event of an oil-injected machine, the female rotor is driven by the male rotor via a thin film of petroleum. A dry rotary screw compressor employs a set of timing gears to attain proper rotation.