Matcha powder fine screening device

The utility model relates to a fine screening device for matcha powder. The fine screening device comprises a shell, a transmission device and a vibration screening assembly, a sliding frame of the vibrating screen assembly is arranged in a matching groove in a shell, and a first spring is arranged between the right side of the sliding frame and a shell mounting groove. A screen frame is mounted in the sliding frame, and a plurality of second springs are arranged between the screen frame and the sliding frame; a screen is arranged on the screen frame; a movable block is fixedly installed on the outer wall of the screen frame and penetrates through the receding grooves to extend out of the shell. A driving wheel matched with the movable block is installed on the supporting frame, a plurality of driving teeth are evenly distributed on the circumference of the driving wheel, and when the driving wheel rotates, the driving teeth push the movable block to move rightwards and upwards. When the weight of falling mat