Air flue for flour cleaning machine

The utility model discloses an air flue for a flour cleaning machine. The air flue for the flour cleaning machine comprises a left air flue body and a right air flue body which are arranged on the interior of the flour cleaning machine. A plurality of air inlets are respectively formed at intervals in the outer walls of the left air flue body and the right air flue body along the axial direction. A sprayer is fixedly arranged in each air inlet in a sealed mode. Each sprayer is communicated with an air inlet pipe. An electronic control valve which is controlled by a microcontroller is arranged on the air inlet pipe. The air flue for the flour cleaning machine has the advantages that timing and quantitative automatic cleaning of accumulate flour can be achieved, the shape of the cross section of the air flue is prevented from being changed due to the accumulated flour, drafted air amount can be guaranteed, and the air flue for the flour cleaning machine is beneficial for improving using effects of windowing and