▎ 摘　　要

NOVELTY - The utility model belongs to the graphene production field, specifically claims a graphene powder sieving device, the base is provided with a motor cabin; the motor cabin is provided with an oscillating motor; the lower eccentric plate and the upper eccentric plate of the oscillating motor are provided with a counterweight block; upper part of the base from bottom to top is coaxially overlapped with bottom screen drawer, a middle layer sieve drawer and a top layer sieve drawer; a plurality of vibration isolation springs are connected between the bottom layer sieve drawer and the base; the middle layer sieve drawer and the top layer sieve are provided with a first screen and a second screen; the top layer sieve drawer is provided with a dust-proof cover, each layer of screen drawer is tightly bound together by an annular hoop; a cleaning motor is arranged between the centre of the hill-shaped slope plate of the bottom screen drawer and the motor chamber; the cleaning motor is connected with the central rotating shaft; the top end of the central rotating shaft is provided with a bulk material turntable; the central rotating shaft is further provided with a first plate brush and a second plate brush for cleaning the first screen and the second screen; The utility model can finish grading sieving at one time, reducing screen blocking and frequently changing sieve.