Patent ID: 8979476
Filing Date: 2015-03-17
Classification: F04D

Abstract:
1. Apparatus, including a pump or pumping assembly, arrangement or combination for solids handling, comprising: a suction liner having a suction liner spiral design, the suction liner spiral design configured with at least one of the following; one spiral, or at least two overlapping spirals, each overlapping spiral being configured to start at an outer periphery of an inner rim of the suction liner and the end at an intermediate location between the inner rim and an outer rim or periphery of the suction liner; and an impeller having forward curved impeller suction side pump out vanes; the suction liner spiral design and the forward curved impeller suction side pump out vanes configured to handle solids substantially having a weight concentration (Cw)<about 40% and/or a solids size distribution <about 200 microns, and to so abrasive erosion is substantially prevented to significantly reduce wear and a tight clearance is substantially maintained at the impeller/suction side liner gap between the impeller and the suction liner, which prevents degradation of pump performance through excessive leakage.