Mill base barrel cleaning device

The invention provides a mill base barrel cleaning device. The mill base barrel cleaning device comprises a conveyer belt, a recycling tank, a protective cover, a cleaning assembly, a sand supplying assembly and a cleaning agent supplying assembly. A plurality of locating frames fixing the mill base barrels are fixedly arranged on the conveyer belt. The recycling tank is located under the conveyer belt. A stand column is vertically and fixedly arranged in the middle of the recycling tank. The upper end of the stand column is sleeved with an installation plate vertically sliding along the stand column. The installation plate is driven by a lifting air cylinder fixed to the stand column. The cleaning assembly is fixed to the installation plate and comprises a motor fixed to the installation plate and a brush head connected to the lower end of a motor output shaft. The side portion of the protective cover is connected with a protective rod. The protective rod is fixed to the stand column through a bolt. The side