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How The Positive Displacement Is Obtained In Rotary Pumps ?

Answer»

Positive displacement in rotary pumps is achieved in two ways :

  1. A rotor carries radially adjustable vanes, the outer tips of which are constrained by a circular casing, whose centre is remote from that of the rotor.
  2. Various COMBINATIONS of gears, LOBES, helices, etc. WITHIN a casing arranged so that the lobes or teeth attached to each rotor pass in SEQUENCE through the same pumping space.

Positive displacement in rotary pumps is achieved in two ways :


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