Rotary lobe vacuum blowers are used in many remediation applications requiring medium air flow rates and vacuums. In rotary lobe technology, there are two non-contact, counter-rotating rotors within a non-lubricated casing; the tight tolerances of the rotors and casing provide the necessary seal. Both rotors are identical, so there is no internal compression like that in a rotary claw vacuum pump. As the rotors pass the blower inlet, the area between the rotors expands, drawing air into the blower. Each rotor captures a portion of that air and traps it against the blower casing. When the rotors reach a certain point in their rotation, the blower outlet is uncovered and the air is discharged; discharge pressure is created through the transfer of air. Since each rotor is symmetrical, every rotation of the rotors results in two complete intake and discharge cycles. As air is being drawn in at the inlet due to expansion, another cycle of air is being discharged through the outlet.
Rotary lobe blowers are capable of vacuums up to 15 inHg. These units require very little maintenance due to their non-contact, dry operation. However, dry operation leads to high noise levels and relatively high discharge temperatures.
When selecting a rotary lobe vacuum blower, the required flow rate and vacuum are the most important factors, and the electrical classification of the motor should also be considered.
MLE Equipment uses Sutorbilt rotary lobe vacuum blowers manufactured by Gardner Denver. Please see the provided specification sheets and manuals for more detailed information on rotary lobe vacuum blowers.
