| 摘要 |
PROBLEM TO BE SOLVED: To restrict occurrence of hunting of a liquid level and make an average cumulative operation time of a plurality of pumps in pump equipment for discharging liquid under application of a plurality of prior standby type pumps.SOLUTION: Pump equipment 300 includes a plurality of pumps 200 for discharging liquid (river water and the like). Each of the plurality of pumps 200-a to 200-f includes a bell-mouth 212 acting as a liquid suction port and a centrifugal impeller 202 for lifting liquid from the bell-mouth 212. Each of impellers 202-a to 202-f of the plurality of pumps 200-a to 200-f is arranged at different positions in height direction, respectively. In turn, each of the bell-mouth 212-a to the bell-mouth 212-f of the plurality of pumps 200-a to 200-f is arranged at aligned positions in the height direction. |
