▎ 摘　　要

NOVELTY - The utility model claims a graphene coating spraying device for repairing double-layer storage tank, comprising a supporting plate; the top of the supporting plate is welded with a cylinder; two sides of the outer wall of the cylinder are rotatably connected with two fastening structures; the cylinder is provided with an electric telescopic rod; the fastening structure is fixed with electric telescopic rod; one side of the supporting plate located on the cylinder is provided with a guide hole; two sides of the guide hole are provided with a roller; the extending end of the electric telescopic rod is provided with a bidirectional nozzle; one side of the supporting plate located on the cylinder is provided with a coating box. The utility model through electric telescopic rod, bidirectional nozzle, coating box, pump machine, coating pipe, guide hole to control the electric telescopic rod drives the bidirectional nozzle spraying interlayer inner wall, coating box; the coating pipe and the pump machine are bidirectional nozzle conveying coating and power; the coating pipe passes through the guide hole and is connected with the bidirectional nozzle; compared with the traditional way, it is good for saving the maintenance cost, improving the service life of the double-layer storage tank, protecting the whole strength of the double-layer storage tank.