Fine crushing device for making rice flour

The invention discloses a fine crushing device for making rice floor. A channel is additionally arranged in the side wall of a crushing container, so that materials can pass through the channel along with airflow in the crushing process and are sprayed out from the lower part of blades, the circulation of the materials between an inner cavity of the crushing container and the channel is realized, a stirring dead zone below the blades is eliminated, and the fineness and the uniformity of the rice flour are improved. According to the technical scheme, the crushing device is characterized by comprising a base and the crushing container, wherein a driving device is arranged in the base, and the blades are arranged in the crushing container and arranged at the bottom of the crushing container through a rotary tool apron; the channel is formed in the side wall of the crushing container, first openings are formed in the channel in the inner surface of the bottom of the crushing container or the joint of the inner su