Hydrodynamic screw with optimized geometry and efficiency

摘要

The present invention relates to a water conveyor screw, comprising a trough (6) for receiving a working screw (1) having an upper head end and a lower foot end, an upper and lower radial bearing (20) and a drive unit, wherein the working screw (1) of a plurality of airfoils (2) which orbits the screw core (5) spirally from bottom to top with a plurality of turns (2a, 2b, 2c). The auger is characterized in that the turns (2a, 2b, 2c) of the blades (2) in an upper compression region (3) of the screw core (5) are arranged around each other around the screw core (5), and that the screw core (5 ) in the compression region (3) further comprises a diameter extension (4).