Rotary scrubbing device for cleaning exhaust pipelines of range hoods with different apertures

The invention relates to the field of range hood cleaning, in particular to a rotary scrubbing device for cleaning exhaust pipelines of range hoods with different apertures. The rotary scrubbing device comprises a mounting base, a mounting cylinder, arch-shaped supporting plates, a limiting adjusting component, a brush angle adjusting component and the like. The mounting cylinder is fixedly connected to the mounting base, arch-shaped supporting plates are symmetrically and fixedly connected to the mounting base, the limiting adjusting assembly is arranged on the mounting cylinder, and the brush angle adjusting assembly is arranged on the mounting cylinder. For the rotary scrubbing device disclosed by the invention, cleaning liquid is sprayed to an exhaust pipeline of a range hood in all directions by an opened water spraying pipe through the brushing assembly, the inner wall of the exhaust pipeline of the range hood is fully brushed in cooperation with rotation of a first brush frame, and the first brush fram