How the Rotary Lobe Pump Works

Two intermeshed lobes are affixed each to gear driven shaft.


The shafts rotate in opposite directions. The rotating motion of the lobes creates an expanding cavity on the suction side. This allows fluid 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.

Hard solids are passed through the pump within the cavities between the lobe and outer housing. Vogelsang offers a true unique solids passing design, all build into our Dynamic Injection housings. This design allows for solids passing, without damage to the lobes, and extends operation life. The Vogelsang pump can pass most any solid that can fit in the cavity. Maximum non-compressible solid size varies by pump model up to 2.4″ (61mm).


Rip, Cut, and Pump Solids in seconds. Pump super thick slurries.

These kinds of application needs durability, strength of materials, and well crafted engineering design/manufacturing.

We can offer you various solutions on the above application.

Browse related information on ripping, cutting, pumping solids and thick slurries.

For Inquiry or RFQ (Request for Quotation) on posted technology solution, please email:

Jess C. Gregorio

Affiliate Technical Marketing and Project Lead Generation Manager for the Philippine Territory

Driving Leads. Adding Sales.
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