Low-shear-force pulseless liquid circulation device and method for biological medicine production

The invention discloses a low-shear-force pulseless liquid circulation device and method for biological medicine production and application. The circulation system comprises a valve terminal and a liquid conveying unit which are connected through a liquid conveying pipeline. The controller can control the liquid in the circulation system to flow clockwise or anticlockwise, the cell interception assembly is cleaned by alternately performing clockwise flow and anticlockwise flow, and the flow rate of the liquid is regulated and controlled by controlling a power device of a pressure conveying unit of the liquid conveying unit. The flow velocity of liquid in the system can be accurately controlled, the shearing force is low, pulsation is avoided, and bidirectional flow of the liquid in the system can be realized, so that blockages on membrane holes and membrane surfaces of the cell interception assembly are efficiently washed, and the cell interception assembly is cleaned. The system is easy to automatically cont