Auxiliary bypass system for pelletizing disc stock bin

The auxiliary bypass system comprises an auxiliary material preparing assembly, and the auxiliary material preparing assembly comprises a material distributing hopper, two flow guiding plates, a material preparing opening, a material preparing pipe, a material preparing bin, a spiral conveying rod, a material conveying pipe, a discharging opening, a driving motor, two blocking pieces, a rotating shaft, a feeding pipe and a transmission motor. According to the utility model, the rotating shaft is driven by the driving motor, the rotating shaft drives the baffle plate to turn over, at the moment, a mixture in the material distributing hopper flows into the material preparing bin through the material preparing pipe, and the mixture can be stored through the material preparing bin, so that the step of closing a conveyor and a strong mixing machine after the material bin of the pelletizer is full is avoided; when the vertical mill, the strong mixing machine or the conveyor is shut down for maintenance, the mixed m