▎ 摘　　要

NOVELTY - The utility model claims a grinding and mixing device for preparing ultra-large size graphene conductive paste, comprising a stirring box body, wherein the lower end of the left side wall of the stirring box body is fixedly installed with a first large motor through a connecting frame; the right power output end of the first large motor is connected with a screw rod extending to the inner cavity of the stirring box body; the bottom of the right side wall of the stirring box body is fixedly provided with a first discharging pipe; the top central position of the stirring box body is fixedly installed with a motor box body; the left side of the inner cavity top of the motor box body is fixedly installed with a third large motor; the power output end of the third large motor is connected with a driving transmission shaft passing through the motor box body and extending to the inner cavity of the stirring box body. the ultra-large size graphene conductive paste for preparing grinding mixing device through the feeding port to the proper amount of block graphene material into the crushing box body, starting the second large motor drives the rotating shaft to rotate so as to pre-crush the block-shaped graphene material under the cooperation of the crushing mechanism and the first crushing hammer rod.