Bowl centrifuge rotor

A bowl centrifuge rotor comprising a hollow rotary casing having a central axis, an internal cavity, and provided at one end with windows for discharge of clarified liquid and at an opposite end with sediment discharge windows:

• a hollow external screw conveyer installed in the cavity of said casing and being coaxial therewith, said conveyer having a discharge end oriented in the direction of the sediment discharge windows in said casing and provided with sediment discharge windows of its own, said external screw conveyer having a cavity for receiving at an end of said conveyer a suspension to be processed;
• a pack of separating plates positioned adjacent said external screw conveyer coaxial therewith in the path of flow of the suspension, during processing thereof, toward the windows made in said casing for discharge of clarified liquid;
• at least one internal screw conveyer installed in the cavity of said external screw conveyer coaxial therewith between its discharge end and said pack of separating plates and having a charging end oriented in the same direction as said external screw conveyer and rigidly secured to said casing for rotation therewith, as a result of which different sizes of solid phase fractions of the processed suspension are transported separately by said screw conveyers.