Premixing production line system capable of preventing materials from layering

The utility model provides a premix production line system for preventing material layering, which comprises a plurality of auxiliary material tanks, a plurality of weighing tanks, a plurality of adding hoppers, a plurality of mixers and a plurality of buffer tanks, the auxiliary material tanks, the weighing tanks, the mixers and the buffer tanks are sequentially arranged at intervals from top to bottom, and the adding hoppers are flush with the weighing tanks. The bottom of the auxiliary material tank is provided with a plurality of first metering pumps used for metering discharged materials, the plurality of first metering pumps are communicated to the top of the weighing tank through a cloth bag air pipe, the bottom of the weighing tank and the bottom of the adding hopper are respectively communicated to a feeding port of the mixer, a discharging pipe is arranged below the mixer, and the discharging pipe is communicated with the feeding port of the weighing tank. A spiral flow deflector is arranged on the