Centrifugal pump.

摘要

A centrifugal slurry pump has a vaneless impeller (30) with a smooth concave annular face (31) opposed to a smooth front plate (11) of the pump across the pumping chamber in the flow path between the inlet (37) and outlet (17). The flow path is thus smooth and is of constant effective cross-section between the inlet through the pumping chamber to the outlet to induce laminar flow through the pump.