Sugarcane sugar extraction device and extraction method thereof

The invention belongs to the technical field of sugarcane processing, and particularly relates to a sugarcane sugar extraction device and an extraction method thereof. A feeding hole and a discharging hole are respectively formed in the top and the bottom of the box body; the bottom of the box body is fixedly connected with a group of supporting columns; the side wall of the box body is rotationally connected with a group of rotating rods through a group of circular through grooves, and the group of rotating rods are rotationally connected with the inner wall of the box body; first gears are fixedly connected to the rotating rods, and the pair of first gears transversely distributed on the box body are meshed with each other. The problems that sugarcane is ground and juiced through a pair of grinding rollers, sugarcane residues obtained after grinding and juicing fall to the same position of a filter screen, residues are accumulated at the corresponding positions of discharging ports of the filter screen and