Vertical Barrel Pump

The rotating part, the rotor, has the form of a round rapid motion spiral spindle with a large pitch. The static element, the stator, is in the shape of a double- lead interior screw, thereby enabling a double pitch of the rotor. Consequently there are cavities between the rotor and stator which always have the same size during the rotation of the rotor.

If the rotor is made to rotate, then these cavities ; and consequently the substances to be conveyed; are shoved in a screw- like manner from the suction to the pressure side. The rotors of the PUMPAID mono screw pumps possess a relatively large eccentricity with respect to the pitch.