Blower Operating Features

Characteristics of Aerzen Rotary Positive Displacement Blowers (PD Blower)

Aerzen positive displacement blowers delivers pulsation free air - find out more

Oil-free conveying
The fact that Aerzen positive displacement blowers convey the medium oil-free is a decisive advantage in pneumatic conveying, in water filtration plants, and in the food and chemical industries. Since the rotary pistons revolve without making contact with each other and the housing, no lubrication is required in the conveying chamber, which guarantees that the medium conveyed remains free of contamination from lubricants and wear particles.

Wide range of selection
The extensive number of models and sizes available facilitates the selection of the optimal blower for any given application. Blowers handling capacities ranging from approx. 30 m3/h to approx. 84000 m3 /h in either vertical or horizontal flow configuration can be supplied.

Drive types
Blowers are driven by electrical motors, internal combustion engines, hydraulic or compressed air motors via flexible coupling (arrangement 4, DA), flanged motor B 5 (for HV-blowers) V-belt drive (arrangement 5, FA) Reducer drive, shift gear transmission or variable speed drive (arrangement 6,6h).

Conveying based on the positive displacement principle
The volume varies only slightly in response to changes in back pressure. Blower output can be adapted in the swept volume to the operating conditions simply by varying its speed.

High mechanical efficiency
Since the rotary pistons revolve without making contact, mechanical power losses are generated in the bearing and timing gear assemblies only. The use of ball and roller bearings as well as tempered and ground timing gears reduces these losses to an absolute minimum. Furthermore it is advantageous that the helical gearing offers a running of low noise.

High volumetric efficiency
The rotary pistons and casing components are manufactured using modern CNC-controlled precision machine tools, guaranteeing exact tolerances even in the large scale production of standard components. This is reflected in the minute clearances both between the rotors as well as between the rotors and the housing, resulting in very high degrees of volumetric efficiency.