Screw assembly for a triple screw pump and triple screw pump comprising said assembly

Abstract

Screw assembly (1) for a triple screw pump (10), comprising: a central screw (2) and at least one lateral screw (3), both provided with one or more helicoidal threads, said lateral screw (3) being arranged to mesh with said central screw (2) with a lateral screw axis (z1) parallel to the central screw axis (zc), wherein the distance between the axes of the central screw (2) and of the lateral screw (3) is greater than the half and lower than ⅗ of a central screw (2) external diameter (Øce).

Dependencies are inferred from the claim text.