Rotor for centrifugal pump has bearing tube with even number of blades, with every second blade projecting over neighboring shorter blades

摘要

The rotor has a bearing tube (18) with a bore for pump shaft, and rotor blades (36,n). An even number of blades is located on the bearing tube, and every second blade is guided over the outer edge (38n) of two neighboring shorter blades in direction of the longitudinal axis of the bearing tube. The outside edges next to the input side of the long blades extend at an intake angle to the bearing tube diameter. The angle is adapted to each working point.