Rotary Screw Compressor / Screw Compressor For Sale
Screw Compressor Advantages
Rotary screw Air Compressors or screw compressors uses a rotary type positive displacement mechanism. Screw Air Compressors replace piston compressors where large volumes of high pressure air are needed, a screw compressor is better for large industrial applications or to operate high power air tools such as jackhammers and a screw compressor has a much longer life than piston types.
A screw air compressor has two interlocking helical rotors contained in a housing. Air comes in through the screw compressor valve, “the screw compressor inlet valve” and is taken into the space between the rotors. As the screw air compressors screws turn, they reduce the volume of the air, thus increasing the pressure.
Basicly a screw compressor has a male and female rotors are turning in opposite directions they draw air in between them. As they rotate the space between the rotors decreases, creating compressed air. They are the most widely used air compressor models in the industrial marketplace and screw compressor is designed to run 24 hours a day, 7 days a week, for many years!
Screw compressors are a lot more expensive than the piston type, so what sort of life will you get to make the price worth it? it's estimated that a rotary compressor will last for 40,000 to 60,000 hours the equivalent of full-time operation for 20 to 30 years. With regular maintenance, piston type compressors have a life expectancy of 10 to 15 years so with the screw type you can expect about twice the life span.
If you're unsure what size screw compressor you need you can read about screw compressor and screw air compressors
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The metal age is the start of air compression with the invention of the bellows, then with the invention of the vacuum pump in the year 1650, German physicist and engineer, Otto Von Guericke is responsible for this invention. Von Guericke used his vacuum pump to experiment with air pressure and demonstrate how air worked with combustion. This led the way for the future of compressed air. In 1762, English engineer John Smeaton invented a blowing cylinder that was driven by a water wheel. In 1776, English industrialist John Wilkinson installed a blasting engine in his machine shop that could produce 14.5 pounds of air pressure per square inch. In 1829, a compound air compressor was patented. In 1872, the compressor was improved with the use of water jets that cooled the cylinders. This greatly improved the systems efficiency, and in turn, emphasised the importance of controlling the temperature and moisture of the air that is being compressed.
"The screw compressor was first developed to meet the needs of the construction and mining industries. The first screw compressor was actually made in the 1930’s. The rotary screw compressor is actually the same thing as the screw compressor and is widely used for many different applications.
The most common screw compressor is the single stage compressor. The screw air compressor consists of two rotors inside a casing and the rotors compress the air internally. There are no valves in these rotary screw compressors. The units are cooled with oil, which seals the internal clearances. The single stage rotary screw compressor is easy to maintain and operate." Fron Inside woodworking