The invention discloses an automatic nano
zinc powder screening device and method, and relates to the field of nano
zinc powder screening. The automatic nano
zinc powder screening device comprises a
machine body and a cage frame arranged in the
machine body, a screen is arranged on the cage frame, a feeding port is formed in the top of the
machine body, and a feeding shaft is arranged in the machine body; the feeding shaft is provided with a
spiral blade located in the feeding port and a plurality of sets of wind wheel blades located in the cage frame, and a plurality of sets of auxiliary mechanisms are arranged outside the feeding shaft at intervals. The auxiliary mechanism comprises a sealing cylinder, and the inner side face of the sealing cylinder is connected with a sealing
piston in a sliding mode. According to the automatic screening device and method for the nano zinc powder, through mutual cooperation of a sealing cylinder, a sealing
piston, a striking rod, a striking ring, a vibrating spring and a power mechanism, the zinc powder can be synchronously vibrated in the screening process, so that the agglomerated zinc powder can be crushed, meanwhile, the speed of the zinc powder penetrating through the surface of a screen can be increased, and the screening efficiency of the zinc powder is improved. And the screening efficiency of the zinc powder is effectively improved.