The invention provides a dust collection floor
brush. The dust collection floor
brush comprises a floor
brush shell and a rolling brush
assembly arranged on the floor brush shell, wherein the rollingbrush
assembly comprises a first rolling brush and a second rolling brush which are arranged at an interval, an air inlet is arranged in the bottom of the dust collection floor brush, and the air inlet is positioned between the first rolling brush and the second rolling brush. The dust collection floor brush further comprises an
air channel limiting structure connected to the floor brush shell, the
air channel limiting structure comprises a limiting part downwards extending along the circumferential direction of the second rolling brush from the floor brush shell, a main
air channel positionedat the downstream of
airflow is formed between the floor brush shell and the second rolling brush, a dust throwing hole positioned at the upstream of
airflow and realizing space limiting relative tothe main air channel is formed between the limiting part and the air inlet, and dust-containing
airflow passes through the dust throwing hole from the air inlet and is discharged from an air outlet positioned at the rear side of the second rolling brush through the main air channel. With the structure, the dust separation power of the first rolling brush and the second rolling brush can be effectively promoted, so that garbage is effectively separated and smoothly guided to the air outlet, meanwhile, the vacuum degree and garbage separation efficiency are improved, and further, the dust collection efficiency is improved.