ELGi ROTARY SCREW AIR COMPRESSOR PROFILE
Rotary screw air compressors are highly-efficient rotary positive displacement machines skilled in high-speed operation over various operating pressures. In rotary screw compressors, there are no valves or other mechanical forces that may cause unbalance. The lack of valves and forces allows the compressor to operate at high speeds while combining a significant flow rate with small exterior dimensions.
ELGi rotary screw air compressor consists of several segments in different shapes.
Large positive displacement increases air pressure by reducing the volume.
A strong female rotor helps tap more air and reduces space continuously.
A short sealing line seals the entire contact length, eliminating the need for a sealing strip.
Offers better clearance distribution.
WORKING PRINCIPLE OF ROTARY SCREW AIR COMPRESSOR
The screw air compressors use a rotary-type positive-displacement mechanism. The screw element comprises two rotors similar to a helix, each with a different shape and number of grooves/teeth. As the atmospheric air is sucked into this screw element, it progresses with the rotors and gets compressed. A male and a female rotor element bring the air to trap and release when required.
In an oil-lubricated rotary screw-type air compressor, the motor or engine drives the male rotor, and the male rotor or the thin film of oil between the male and female rotors drives the female rotor.
In an oil-free rotary screw-type air compressor , gears control the timing of the male and female rotor. There is no oil present to seal the chamber.
The basic working principle of a rotary-type screw air compressor is that the male and female rotors spin in opposite directions. The prime mover turns the rotor of the airend in a rotary screw air compressor and develops a vacuum that drives the surrounding air into the airends through the air filter. As the rotors turn progressively, the air gets trapped in the spaces between the two screws (rotors).
Air is injected from the atmosphere into the rotary screw compressor through the air intake system. First, the air is made to pass through a filter that extracts suspended particles. The filtered air then enters the airend, which is the heart of the rotary screw air compressor. Here in the airend, the air is trapped within the spaces between the two rotors with lobes that mesh. As the rotors turn progressively, they compress the trapped pockets of the air, releasing the compressed air at the outlet of the airend.
ELGi EN & EG series are good examples of best-in-class rotary screw electric air compressor technology that offers ideal industrial applications solutions.
INDUSTRIES WHERE ROTARY SCREW AIR COMPRESSORS ARE USED
Various industries like the food and beverage industry and textile industry rely on rotary screw air compressors. The rotary screw air compressors find use in multiple applications such as breweries, food processing plants, etc. Food and beverage companies use rotary screw air compressors to keep their finished goods fresh. Textile companies use these compressors for drying purposes. Farms commonly use screw air compressors to run sprayers like insecticides, liquid fertilizers, etc., easily carried by compressed air.
