The utility model provides a dust collecting device, cleaning equipment and a cleaning
system, and the dust collecting device comprises a dust cup which is provided with an air inlet, an air outlet and a dust outlet which can be opened and closed; the dust-
gas separation part is arranged in an inner cavity of the dust cup, the dust-
gas separation part divides the inner cavity of the dust cup into a dust storage cavity and a
cyclone cavity, the dust-
gas separation part is provided with a dust throwing opening used for communicating the dust storage cavity with the
cyclone cavity, and the
cyclone cavity is communicated with the air inlet; the filtering
assembly is arranged in the dust cup, the filtering
assembly comprises a filtering cylinder extending into the cyclone cavity so that dust and
air separation can be conducted on air flow entering the cyclone cavity, and at least part of the structure of the filtering cylinder can be deformed; the ash outlet is suitable for being connected with a cleaning
base station, and when the ash outlet is connected with the cleaning
base station, the filter
cartridge is suitable for deforming under the
airflow driving effect of at least one of the cleaning
base station and the cleaning equipment. According to the dust collecting device, hair
foreign matter in the cyclone cavity can be removed, filtering holes are prevented from being blocked, and the
suction force of cleaning equipment is guaranteed.