Sand making machine with impeller convenient to replace

The sand making machine comprises a sand making machine base, the top of the sand making machine base is provided with a bearing base and an outer sleeve frame on the top of the bearing base, the center of the top face of the bearing base is provided with a driving disc located on the inner side of the outer sleeve frame, and the top of the driving disc is fixedly provided with a sleeve column; the outer side of the sleeve column is fixedly sleeved with a roller column, and the outer wall of the roller column is fixedly sleeved with a lower impeller plate and an upper impeller plate. According to the sand making machine with the impeller convenient to replace, through the arrangement of the roller column and the sleeve column, all assemblies on the upper impeller plate and the lower impeller plate can be assembled on the top of the bearing base in a movable sleeving mode, then when the impeller needs to be replaced, a top plate on the top of the outer sleeve frame is disassembled, then a screw base is disasse