Filter-medium support plate for centrifugal filter

In a centrifugal filter:

• a centrifuge drum rotatable about an axis;
• a plurality of support plates lining the drum, each of the plates being generally flat and generally rectangular and having a radially inwardly directed inner face, the plates each being formed with
• an array of generally parallel flow grooves extending on and opening radially inwardly at the inner face and each having an upstream end and a downstream end spaced along the plate from each other, the flow grooves each being of generally regularly increasing flow cross section from their upstream ends to their downstream ends;
• ribs between the flow grooves;
• a collection groove into which the downstream ends of the flow grooves open and transverse to the flow grooves, the flow grooves being arranged in two rows flanking the collection groove, the collection groove being formed as two parallel respective subgrooves into which the rows empty;
• and
• an outlet opening into which the subgrooves open;
• means including the collection groove and opening for draining liquid from the downstream ends;
• and
• a filter medium overlying the inner face over the flow grooves and on the ribs.