PULSATION-FREE POSITIVE DISPLACEMENT ROTARY PUMP

摘要

A pump having two pistons placed in a rotor, situated in a stator forming two opposite parallel eccentric pumping chambers having at least one inlet port through which the fluid is drawn into at least one of the pumping chambers during the filling movement of at least one of the pistons and, subsequently, expelled from at least one of the pumping chambers, during the emptying movement of at least one of the pistons, to at least one outlet port, characterized by an inlet cavity in connection with the inlet port, an outlet cavity in connection with the outlet port and two port changeover transition zones situated between each side of the cavities.

主权项

1. A pump including two pistons in a rotor located in a stator, the rotor forming two opposite parallel eccentric pumping chambers having at least one inlet port through which the fluid is aspirated into at least one of the pumping chambers during the filling movement of at least one of the pistons and then expelled from at least one of the pumping chambers during the draining movement of at least one of the pistons to at least one outlet port, wherein the pump comprises an inlet cavity connected to the inlet port, an outlet cavity connected to the outlet port and two port changeover transition areas located between each side of the cavities.