Rotary Screw Air Compressor Ensuring Efficient and Reliable Industrial Performance

Rotary screw air compressors provide consistent compressed air that is used in industrial operations to power air-powered tools and pneumatic systems – helping reduce downtime for production lines.

Lubricated rotary screw compressors are the go-to air compressor choice for industrial facilities, offering various capacities and pressure ratings to meet their air compression needs.

Energy efficiency

Screw air compressors typically use less energy to compress air than other types of compressors due to their lower RPM operation, thus minimizing mechanical losses caused by heat at high speed and volumetric losses due to compressed air at very low pressure.

Rotary screw air compressors can be found in industrial settings with constant air demand, such as manufacturing and food processing plants, but you may also come across them on vehicles or trailers, or as standalone units at construction sites or mining operations.

These compressors are ideal for applications where air quality is of critical importance, such as pharmaceutical, medical or semiconductor fabrication industries. For example, they can help meet stringent regulations set forth by these industries.

Oil-free operation

Oil-free compressors are essential when air purity is of utmost importance in sensitive industrial processes like medical research or semiconductor manufacturing. By not using any oil lubricants to lubricate their rotor elements, these rotary compressors eliminate any risk of contaminants entering processed air through transference from outside sources.

Working principle involves positioning two rotors at opposite ends of an enclosed, single-piece housing unit known as an ‘air end’. Each main rotor is driven by its respective prime mover while secondary rotors are driven via gearbox. As no contact between rotor elements ever makes contact with each other or the air end itself, no friction or need for lubrication arises.

Timing gears are used to synchronize the counter-rotating compressor elements for optimal harmonic running and energy efficiency, which also enables greater capacity. An air or water-cooled radiator then cools the compressor oil before it returns back through a scavenge return line for lubrication of its air end.

Controlling air flow

Modern rotary screw air compressors feature sophisticated control and monitoring systems that provide operators with precise information regarding operating performance, enabling them to make informed adjustments that increase energy efficiency while decreasing energy waste.

This system design also eliminates pulsation, which reduces wear on machines and leads to improved productivity. Air pressure remains stable throughout, providing a continuous supply of compressed air.

Rotary screw air compressors feature an efficient design with time-tested performance that produces impressively efficient operation at 100% duty cycle, producing an uninterrupted supply of compressed air without fluctuations and maximising energy savings.

Rotary screw air compressors differ from other compressor types in that they do not rely on oil to power the compression process, although their rotors may require lubrication for sealing internal clearances and transmitting mechanical energy between rotors. Oil-injected models use lubricating oil as a bridge between vanes while timing gears help synchronize their positions.

Vedlikehold

Rotary screw compressors feature few moving and contacting parts, reducing wear-and-tear and energy use while lengthening service intervals for easier servicing, quick checks and repairs, as well as quicker service intervals overall.

An opening valve draws air into a compressor’s chamber, where two interlocking helical screw rotors have been machined with extremely close tolerances to accommodate tight vanes that only differ by millimeters in spacing between their vanes – increasing pressure over time by rotating and decreasing volume in its volume reduction mechanism.

Lubricating oil acts as both a hydraulic seal and mechanical energy transfer between driving and driven rotors, acting both as an energy transmitter. Different rotary compressor models use different levels of oil; “oil-flooded” ones use oil sealed compression chambers while others don’t; those without oil usage use external gears that synchronize rotation between male and female rotors to achieve compression ratio. When completed, compressed air is cooled, filtered, routed through lines to receivers and finally routed back out again.