Abstract
Sewage pump is used for the transfer of liquids containing foreign bodies, such as solid and fibrous material. Therefore, high performance hi passing foreign bodies is called for. However, general assessment guidelines have not been established for the performance in passing foreign bodies of the pump. Performance in passing foreign bodies of the pump is evaluated by the size of the passed particle size (minimum particle size of the pump) to the pump bore. In this study, the object is to elucidate foreign bodies' obstruction mechanism and establish the evaluation guidelines for performance in passing foreign bodies of the sewage pump. As a first step, performs a performance test and foreign bodies passing test and visualization experiments with high-speed camera in a closed-type centrifugal pump with single-blade, was to investigate the performance hi passing foreign bodies and the behavior of foreign bodies inside the pump.
