Negative-pressure rotation type cleaning device for glass curtain wall

The invention provides a negative-pressure rotation type cleaning device for a glass curtain wall. The negative-pressure rotation type cleaning device comprises a casing, air cylinder assemblies, at least two adsorption assemblies, a suction cup walking assembly, a negative-pressure generator and a washing assembly, wherein an accommodating cavity with an opening at one end is defined in the casing; the adsorption assemblies are provided with a plurality of adsorption pore channels distributed in the length direction of the adsorption assemblies in a spaced manner, one end of each adsorption pore channel is connected with the corresponding air cylinder assembly, and the other end of each adsorption pore channel is opposite to the glass curtain wall, so that the adsorption assemblies and the glass curtain wall are connected in an adsorption manner; the suction cup walking assembly forms a crawler type structure, and a plurality of suction cups are arranged on the outer surface of the suction cup walking assembly; and the washing assembly is arranged in the accommodating cavity, and at least one part of the washing assembly extends out of the opening to be opposite to the glass curtain wall so as to clean the glass curtain wall. The negative-pressure rotation type cleaning device for the glass curtain wall in an embodiment realizes self-rotation of the suction cup walking assembly by controlling the pressure difference of the suction cups in a walking area so as to realize self-movement of the washing assembly and further clean the glass curtain wall.