Centrifugal fish pump suitable for capturing fish schools on sea

The invention relates to a centrifugal fish pump suitable for capturing fish schools on the sea, and belongs to the technical field of fishery equipment.The centrifugal fish pump is characterized in that firstly, an impeller is formed by cutting a cylinder through a special flow channel track, and a gradually-changed fish passing channel is formed in the cylindrical surface, so that centrifugal force is provided for operation of the fish pump; meanwhile, fish body damage caused when the cultured fishes pass through is greatly reduced due to the smooth flow channel structure, and economic losses caused by the fish body damage in the catching process are effectively reduced. And secondly, an automatic centrifugal type fishing mode is adopted, compared with a traditional fishing crane hanging basket fishing mode, the fishing efficiency is greatly improved, the large net cage control efficiency is greatly improved, compared with a vacuum type fish pump, the fishing power consumption is greatly reduced, and practi