Automatic proportioning and mixing production device and method for fermented feed

The invention discloses an automatic proportioning and mixing production device and method for fermented feed, and relates to the field of feed production equipment, the automatic proportioning and mixing production device comprises a spiral conveyor, a plurality of bins, a movable feed hopper, a gate valve, a driving system and a control system, and the bins are arranged above the spiral conveyor in the conveying direction of the spiral conveyor; the movable feeding hopper is movably arranged above the spiral conveyor, a telescopic protection plate capable of moving along with the movable feeding hopper to seal the top surface of the spiral conveyor is arranged on the top surface of the spiral conveyor, and a metering mechanism is arranged in the movable feeding hopper; the gate valve is arranged at the bottom of the stock bin and is opposite to the movable feeding hopper; the control system is connected with the metering mechanism and the driving system, the control system, the metering mechanism and the dr