Device for preparing high-F-value oligopeptide by using magnetic immobilized enzyme

The utility model discloses a high-F-value oligopeptide preparation device utilizing magnetic immobilized enzyme. The high-F-value oligopeptide preparation device comprises a one-step enzymolysis tank, a feeding port is formed in the top end of the one-step enzymolysis tank, a quantitative feeding mechanism is arranged at the top end of the feeding port, a stirring assembly is arranged in the one-step enzymolysis tank, and an electromagnetic device is arranged in the side wall of the one-step enzymolysis tank; the bottom end of the one-step enzymolysis tank is connected with a two-step enzymolysis tank, the bottom end of the two-step enzymolysis tank is connected with a liquid storage tank, a membrane separation device is arranged in the liquid storage tank, the bottom end of the liquid storage tank is connected with a high-pressure pump, one end, far away from the liquid storage tank, of the high-pressure pump is connected with a nanofiltration tank, and a nanofiltration device is arranged in the nanofiltrat