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3.0 General.
3.1 Revolution Pumping Principal.
The pumping action is generated by the contra-rotation of two pumping elements
(rotors) within a chamber (rotorcase) - see Fig 5. The rotors are located on shafts,
which in turn are mounted within an external gearbox and supported by the
bearings; the timing gears are also located on the shafts. The timing gears
transfer the energy from the drive shaft to the driven shaft, synchronising the
rotors such that they rotate without contact with each other.
As the rotors pass the suction port, see Fig 5, the cavity generated increases
creating a pressure decrease, which induces the pumped medium to flow into the
rotorcase.
The pumped medium is carried around the rotorcase by the rotors to the
discharge side of the pump, here the cavity decreases and the pumped medium is
discharged from the rotorcase.
For pump component terms see Fig 4.
Fig 5
3.2 Revolution Pump Head Modularity.
The Revolution pump has been designed with a universal pump head – This
means that on some models by changing the rotors and front cover and a few
ancillary items you change between a rotary lobe pump (RLP) and a
Circumferential Piston Pump CPP.
Note when changing between RLP and CPP Timing and clearances
must be checked
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