▎ 摘　　要

NOVELTY - The utility model claims a graphene powder size screening device, comprising a device main body, the device main body is provided with a speed-limiting feeding part, the speed-limiting feeding part limits the flow speed of the graphene powder entering the device main body; the device main body is provided with an air supply part, the air outlet of the air supply part is towards the lower part of the discharge hole of the speed-limiting feeding part; the air supply part of the self-limiting speed type feeding part of the discharging port of the graphene powder for blowing sieving. by using air flow to blow the graphene powder falling, realizing the size sieving of the graphene powder.