Operating Principle for Rotary Lobe Pumps

Two intermeshed rotors are each affixed to gear driven shaft. The shafts rotate in oposite directions. The rotating motion of the rotors create an expanding cavity on the suction side. This allows fluid and solids to enter and fill the suction side of the pump. The rotors carry the fluid around the housing to the discharge side where it is expelled out of the pump by the closing cavity.

Rotary Lobe Pumps can:

  • reverse flow direction at any time.
  • run dry for extended periods of time. The length of time depends on the flange arrangement.
  • pump most any hard solid object that fits within the cavity between the rotor and casing.
  • pump shear-sensitive liquids
  • pump highly viscous liquids
  • pull a suction lift over 20'. The precise amount of lift depends on the viscosity of the liquid.



How our pump work...