Patent ID: 11959487
Assignee: WEIR SLURRY GROUP, INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 17:
18. A centrifugal slurry pump impeller including a back shroud with an inner and outer face and an outer peripheral edge and a central axis, the back shroud including an impeller nose raised from the inner face in line with the central axis, a plurality of pumping vanes extending between the inner main face of the back shroud, the pumping vanes being disposed in spaced apart relation, each pumping vane including opposed main side faces, a leading edge in the region of the central axis and a trailing edge in the region of the outer peripheral edge of the back shroud with a passageway between adjacent pumping vanes, each passageway including a blended region between each of the main side faces of the pumping vanes and the inner face of the back shroud wherein a surface of the inner face of the back shroud includes a raised portion located between the blended regions of adjacent pumping vanes and wherein the raised portion is separated from the impeller nose.