FLOATING SEALING DISC FOR FLUID CENTRIFUGAL PUMP; FLUID CENTRIFUGAL PUMP; PROCESS TO RESTRICT CIRCULATION FLOW

摘要

A sealing means (60) is provided in a centrifugal pump adjacent the impeller eye extension (35) and a separation wall (56) which is a rigid disk-like member being free to oscillate radially in cooperation with the impeller eye (34) and being restrained from rotating with the impeller eye for reducing fluid recirculation flow through the pump.