Automatic particle screening device

An automatic particle screening device comprises a base and a screening box, the automatic particle screening device comprises the base and the screening box, and the screening box is installed on thebase through a vibration mechanism; the screening box is provided with an upper layer and a lower layer, the upper layer is a screening area, the lower layer is a particle collecting area, a screening channel is formed in the screening area, a plurality of vertical baffles are arranged in the screening channel side by side along the axis of the screening channel and are rotationally connected with the side wall of the screening channel, and the screening channel is divided into a plurality of screening cavities through the vertical baffles. The bottom of each screening cavity is provided witha screen, the apertures of the screens in the same screening cavity are equal, and the apertures of the screens in different screening cavities are gradually increased in the axis direction of the screening channel. By the ad