Grinding tail back flushing equipment of superfine coal ash grinding machine

The utility model relates to the technical field of back flushing equipment of ash mills, in particular to mill tail back flushing equipment of a superfine fly ash mill, which comprises an air storage tank, the air storage tank is communicated with one end of an air outlet pipe, the other end of the air outlet pipe is communicated with an air ejector pipe, and the air ejector pipe extends into a spiral cylinder of the fly ash mill and is opposite to a center hole of a mill tail discharging sieve. And branch air pipes are communicated with the air spraying pipes and face the discharging opening of any discharging screen. According to the device, gas can be conveyed through the gas storage tank, and the gas is sprayed out through the gas spraying pipe and the gas distributing pipe and is sprayed to a center hole of the mill tail discharging screen and a discharging port of the discharging screen, so that mill tail grate gaps and the discharging screen are reversely blown, and materials adhered to the screen are