Research on key technology and design for jet fish pump

To realize automatic harvesting of large-scale cultivation for deep-water cage, according to the working principle of jet pump, an optimized design plan about jet fish pump is proposed in this paper.And based on the energy equation, the pressure calcula-tion expression for working pump is obtained and the calculations on performance parameters of jet fish pump are done.The calibration results for jet pump indicate that the selected working pump could satisfy design request.