▎ 摘　　要

NOVELTY - The utility model claims a preparation inner surface spraying device of multifunctional graphene tube, comprising a box body, the left side wall of the box body is provided with a feeding window; the inner cavity of the box body is provided with a spraying long pipe; the left side output end of the spraying long pipe is provided with a butterfly atomizer; the inner cavity of the box body is rotatably connected with a thread screw rod; the right side wall of the box body is provided with a reversible motor; the left and right sides of the front side wall of the box body are symmetrically fixedly connected with a supporting plate; one side of two groups of supporting plates far away from each other is provided with a cross sliding groove; the inner cavity of two groups of cross sliding groove is slidingly connected with a cross bearing block; one side of two groups of cross bearing block close to each other is fixedly connected with a supporting shaft; two groups of supporting shafts are rotatably connected with the supporting roller; the threaded screw rod is connected with a door frame; the left and right two sides of the bottom of the door frame are symmetrically fixedly connected with a hydraulic telescopic rod; the telescopic end of two groups of hydraulic telescopic rods close to each other are symmetrically and fixedly connected with a limiting block; the utility model has reasonable structure design; it is convenient to uniformly spray the graphene pipe inner surface, It is convenient to operate.