How do lobe pumps work?
Rotary lobe pumps use the principles of rotation to create a vacuum which draws fluid into the pump. The rotating lobes create expanding volumes on the inlet of the pump where the fluid flows into the cavity and is trapped and carried around by the lobes to the outlet of the pump. The pumped fluid travels between the pump casing and the lobes (rotors). The lobes or rotors re-mesh and force the fluid through the pump outlet under pressure. Pump output is constant and continuous.
When to use rotary lobe pumps
Rotary Lobe Pumps are high hygiene pumps and offer excellent sanitary qualities. They are also highly efficient, reliable, corrosion resistant and can easily be cleaned in place (CIP).
These pumps can handle solids, slurries, pastes and many types of liquids. If wetted, they offer some self-priming capability. They also offer continuous and intermittent reversible flows and can run dry for limited time periods.
With large cavities between the rotors, this pump type is very good at handling solids without inflicting damage to the product. Particle sizes can be much larger than most other positive displacement pumps and the pumps are used in many industries including: