In a screw displacement blower, the rotors rotate in opposite directions, keeping precise alignment due to
synchronization. As the rotors mesh, a series of working chambers are formed between them and the body wall.
The gas is sucked in at the inlet (suction) side and is then trapped between the rotors and the housing (radially) and
the cover (axially). Then the gas passes to the compression (discharge) side where the inter-rotor space contracts and
the air or gas is compressed. Internal compression results in a constant air flow without pulsation. This reduces
vibrations and thus extends the service life of the blower and reduces maintenance requirements.
The Robuschi screw blower range combines innovative components, innovative design and excellent efficiency. The result
is a wide range of screw blowers, including the Robox Screw and Robox Energy series.
The new Robox Screw blower unit is equipped with a state-of-the-art CDL air-end. This patented screw blower features 3
by 5 profile impellers with large diameter shafts. This reduces distortion caused by internal and external loads,
allowing the compressor to operate efficiently even under the toughest conditions.
The advanced design of the Robox Screw ensures a low noise level thanks to the new concept of the sound absorbing
enclosure and improved panels. It takes an average of 11% less space, giving 22% more airflow. It also provides energy
efficiency, ease of installation and easy access for service and maintenance.
The Robox Energy combines the unique features of the RSW (patented) screw compressor, an innovative permanent magnet
motor (PMSM) and an integrated electrical panel. It offers maximum efficiency, compactness, easy maintenance and
flexibility in the respect of the requirements of wastewater treatment plants.
Optionally, the blower can be equipped with the ROBOX CONNECT electronic monitoring system and / or a control system
that guarantees safe operation.
ROBOX CONNECT controller functions:
- Multiple language availability
- 44 analog and digital outputs / inputs
- Sequencing mode (multiple blower control)
- Monitoring of service intervals with visualization
- Data transmission via Ethernet
- Parameter trends
- Detection of alarms
- Data logger for troubleshooting service problems
- Compatibility with any type of starting device
- Intuitive touch display
Monitored parameters:
- Control of the starting device
- Inlet and outlet pressure and temperature
- Oil pressure (forced lubrication)
- Oil temperature
- Speed of the air-end
Screw blowers are of particular interest among users of sewage treatment plants, as they significantly help in economic
aeration of sewage and stabilization of sewage sludge.
For wastewater treatment plants, energy consumption is over 60% of the annual costs. In addition, as much as half of the
electricity is needed to power classic blowers in the process of wastewater aeration and sludge stabilization.
Therefore, ROBOX SCREW oil-free screw blowers are the best answer to the need to reduce costs, allowing savings of up to
30% compared to conventional technologies. Robuschi screw blowers can become the optimal choice for wastewater treatment
plants as, thanks to internal compression, they provide the greatest amount of air with significantly lower energy
consumption.
By creating the possibility of working at an overpressure above 1 bar (g), ROBOX SCREW equipment by Robuschi can be used
for aerating reservoirs of considerable depth, which, together with extremely quiet operation (<70 dBA), makes the ROBOX
SCREW ROBUSCHI oil-free screw blowers a perfect fit into the increasing demands for the best use of urban space and
its protection against noise.
