Abstract: A water-absorbing cyclone dust cup for secondary dust-air separation comprises a dust cup cover body and a dust cup main body. The dust cup main body comprises a cup body portion, a primary cyclone arranged in an opening of the dust cup main body, and a secondary cyclone comprising a secondary cyclone main body provided with a ventilation hole defined in a center. At least one air guiding portion is arranged on a bottom end surface of the secondary cyclone main body. The air guiding portions comprise spiral air guiding plates, spiral air guiding passages formed by the spiral air guiding plates around the ventilation hole, and air guiding passage baffles enclosing first ends of the spiral air guiding plates, the spiral air guiding passages are formed by spiral longitudinal extension along the center line direction of the ventilation hole.

Abstract: A water-absorbing cyclone dust cup for secondary dust-air separation comprises a dust cup cover body and a dust cup main body. The dust cup main body comprises a cup body portion, a primary cyclone arranged in an opening of the dust cup main body, and a secondary cyclone comprising a secondary cyclone main body provided with a ventilation hole defined in a center. At least one air guiding portion is arranged on a bottom end surface of the secondary cyclone main body. The air guiding portions comprise spiral air guiding plates, spiral air guiding passages formed by the spiral air guiding plates around the ventilation hole, and air guiding passage baffles enclosing first ends of the spiral air guiding plates. the spiral air guiding passages are formed by spiral longitudinal extension along the center line direction of the ventilation hole.