Rotary screw blower meets oil-free requirements
An
Atlas Copco Compressors product story
Edited by the Engineeringtalk editorial team
Jun 27, 2008
ZS+ blowers incorporate a flanged motor housing and gearbox element, offering permanent alignment during transport, installation and operation of the unit.
Atlas Copco Compressors' ZS+ dry rotary screw positive displacement blower range meets oil-free process air requirements.
Compared to conventional, belt-driven roots blowers, the ZS+ is probably the most cost-effective compressed air solution available to optimise the pressure, volume and air treatment equipment for each production process.
With gear-driven dry screw elements and a fully integrated drive motor, filtration and controller to ensure optimum efficiency and reliability, the ZS+ range provides an all-in-one, fully integrated, compact, silenced package designed to reduce energy requirements by up to 40%.
The compression principle is simple and internal, allowing for increased efficiency.
Two helicoidal rotors, one with four lobes and the other with six flutes, turn into each other.
The former screw turns 50% faster than the latter.
As a result, the intake air is compressed between the rotors and their housing.
The intermeshing compression rotors never touch, thanks to precision timing gears that maintain minute clearances between the rotor surfaces.
Wear and tear is eliminated and no lubrication is required in the compression space.
Special seals prevent air escaping along the rotor shaft, while separate seals stop oil escaping from the rotor bearings into the compression chamber.
The result is 100% oil-free and pulsation-free air.
Unlike belt-driven compressors, ZS+ blowers incorporate a flanged motor housing and gearbox element, offering permanent alignment during transport, installation and operation of the unit.
The ZS+ comes as a complete, fully integrated package, including variable speed drive, controls, canopy, silencer and valves.
There are four variants in the 50Hz, 55kW range, operating at pressures from 750 to 1200mbar with free air delivery (FAD) from 301 - 420 litres a second.
The ZS+VSD 55-75kW series comprises three models operating at pressures from 750 -to 200mbar with FAD from 455 - 590 litres a second.
All the components that would normally be required to operate a standard tri-lobe blower are integrated into the ZS+.
The blower is delivered ready for easy, plug-and-run installation, saving time and money and its reliable performance is backed by Atlas Copco's nationwide sales and service organisation.
Continuous surveillance is a prerequisite to guarantee maximum process uptime.
The ZS+ features an Elektronikon operating system to provide control, to monitor the overall system performance status and to increase the blower's efficiency and reliability.
Easily expandable with extra sensors, digital inputs and Modbus, Profibus or internet communication functions, the Elektronikon can be adapted to specific needs to allow continuous communication with the blower.
An ES Central Controller can also be used to control multiple units, including the ZS+ VSD.
Enclosure reduce noise levels to 69dBA.
Rotary screw technology minimises vibration and a pulsation damper reduces pipework noise, keeping pulsation levels extremely low.
The end result is less impact on the surrounding environment, improved operator comfort and better concentration on the job at hand.
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Contact Atlas Copco Compressors
Tel +44 1442 261201
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