Rotor pump is also named rotary lobe pump,,threelobe pump. Operation Principle: Rotor pump is also named rotary lobe pump, three lobe pump, sole pump, etc. When the 2 simultaneous reverse rotating rotors (with 2-4 gears) revolve, it produces suction force at the inlet (vacuum), which intakes the material delivered. The 2 rotors divide the rotor housing into many smaller parts and revolves to ...