Water-absorbing cyclone dust cup for secondary dust-air separation and vacuum cleaner thereof

A water-absorbing cyclone dust cup for secondary dust-air separation, comprising a dust cup cover body and a dust cup main body, wherein the dust cup main body comprises:

• a cup body portion;
• a primary cyclone arranged in an opening of the dust cup main body;
• a secondary cyclone comprising a secondary cyclone main body with a ventilation hole defined in a center of the secondary cyclone main body, wherein at least one air guiding portion is arranged on a bottom end surface of the secondary cyclone main body;
• the air guiding portion comprises spiral air guiding plates, spiral air guiding passages formed by arranging the spiral air guiding plates around the ventilation hole, and air guiding passage baffles enclosing first ends of the spiral air guiding plates;
• a first water baffle comprising a first water baffle main body which is provided with a plurality of first water retaining grilles at a first inclined angle along a direction of a central axis, wherein the first water baffle main body is connected with a secondary dust storage portion;
• and
• a second water baffle comprising a second water baffle main body which is provided with a plurality of second water retaining grilles at a second inclined angle along the direction of the central axis;
• wherein the spiral air guiding passages are formed by spiral longitudinal extension along a center line direction of the ventilation hole;
• and the first inclined angle is equal to the second inclined angle and is less than 45 degrees.