Crushing device for nano silicon powder production

The utility model discloses a crushing device for nano silicon powder production, which belongs to the field of crushing devices and comprises a crushing box, a feeding pipe mounted at the upper end of the crushing box, a collecting box mounted at the lower end of the feeding pipe, and a mounting plate mounted on the side wall of the crushing box. First servo motors which are symmetrically arranged are mounted at the upper end of the mounting plate, first transmission rods are mounted at the output ends of the first servo motors through couplings, grinding rollers are mounted at the ends, extending into an inner cavity of the collecting box, of the first transmission rods, and an arc-shaped discharging pipe is mounted at the lower end of the collecting box; nanometer silicon raw materials can be conveniently smashed through extrusion smashing and grinding, so that the nanometer silicon raw materials are conveniently ground into powder, the grinding efficiency is improved, meanwhile, the discharging pipe is ar