Cleaning device

A cleaning device, comprising

• a spray cleaning system, which comprises a first pathway, and a clean water tank, a first pump, and a cleaning component that are connected in series to the first pathway;
• a sewage suction system, which comprises a second pathway, and the cleaning component, a second pump, and a sewage tank that are connected in series to the second pathway, wherein the second pump is configured to drive sewage to be sucked in by the cleaning component and collected in the sewage tank;
• an air-drying system, which comprises a third pathway, and the cleaning component, and the second pump that are connected in series to the third pathway;
• the second pump is configured to drive airflow into the cleaning component through the third pathway, and the second pump comprises an air inlet end and an air outlet end;
• and
• a conversion valve, which is connected in parallel to the air inlet end and the air outlet end, and is configured to selectively connect the second pump to the second pathway or the third pathway to achieve a switching between sewage suction and air-drying functions.