Large purse seine aquaculture equipment capable of adjusting water flow velocity

The invention discloses large purse seine aquaculture equipment capable of adjusting the water flow velocity, which comprises supporting columns, fixing frames, connecting blocks, a separation net and rotating shafts. The two supporting columns are arranged at equal intervals, the fixing frames are arranged between the supporting columns at equal intervals, and the rotating shafts are fixedly connected to the two sides of the fixing frames. One end of each rotating shaft is rotationally connected with the corresponding supporting column through a bearing, a connecting block is fixedly connected to one side of the bottom of each supporting column, an adjusting mechanism is installed in each supporting column, and an energy storage mechanism is installed on one side of each supporting column. According to the equipment, the angles of the fixing frames can be adjusted through the adjusting mechanisms, therefore, the opening and closing angles of the fixing frames are utilized to adjust self stress and control th