DUST COLLECTION ASSEMBLY, CLEANING DEVICE, AND CLEANING SYSTEM

The present application provides a dust collection assembly, a cleaning device, and a cleaning system. The dust collection assembly is provided with a dust inlet, a dust suction opening, and a dust collection cavity communicated with the dust inlet and the dust suction opening; the dust collection assembly comprises a bottom wall and a side wall; the side wall extends in the circumferential direction of the bottom wall, the side wall is connected to the bottom wall, and the side wall and the bottom wall define the dust collection cavity; and the dust suction opening is formed in the side wall. The design of the dust suction opening and an accessory structure thereof on the bottom wall is omitted, and a bottom area near the bottom wall is used as the volume of the dust collection cavity, thereby increasing the utilization rate of the dust collection space. The side wall has a sufficient available space, the dust suction opening can be designed without being limited to the number and structural complexity there