Powerful tooth-crawling type material mixer

The utility model discloses a powerful tooth-crawling type material mixer, which belongs to the technical field for designing and manufacturing a material mixer for casting or producing a fireproof material. A main shaft sleeve is arranged outside a main shaft. A main gear is arranged on the top end of the main shaft. A shield plate is arranged on a main gear; and an outer scraping plate and an inner scraping plate are arranged at the periphery of the shield plate. Intermediary gears are arranged at two sides of the main gear; and a tooth-crawling gear is arranged at one side of each of the intermediary gears. Crawling teeth are arranged at the lower part of a tooth-crawling gear shaft. The operating method of the powerful tooth-crawling type material mixer is as follows: a spiral gear at the lower part of the machine body is driven through a working motor to rotate so as to drive the main shaft, the intermediary gears and the tooth-crawling gears to rotate. Under the drive of the shield plate, the crawling t