Coal mine mechanical roller

The utility model belongs to the related technical field of mechanical rollers, and particularly relates to a coal mine mechanical roller. The coal mine mechanical roller comprises a center shaft, a rotary table, a roller body and a bearing seat, and a bearing, the bearing seat and a dustproof structure are arranged in the roller body. The dustproof structure comprises a screen, a fan and a bearing cover; the screen is located on the outermost side in the roller, the fan is located between the bearing seat and the screen, a bearing is arranged in the bearing seat and slidably connected with the center shaft, and a bearing cover is arranged on the outer side of the bearing seat. The dust removal device has the advantages that large-size sundries such as gravels and garbage entering the roller are screened out through the screen on the outer side, then the roller rotates to drive the fan to rotate to generate airflow in the direction of the outer side of the roller, dust is brought out of the roller through the