Water circulation system of cleaning device

The utility model relates to a water circulation system of a cleaning device. The water circulation system of the cleaning device comprises a heating water tank, a water pump, a filter, a funnel and a transfer water tank, wherein a main water inlet valve is arranged on the heating water tank; the heating water tank, the water pump and the filter are sequentially communicated; a water flow enters the heating water tank through the main water inlet water, and then is pumped into the filter through the water pump; the funnel is communicated with the transfer water tank; the transfer water tank is communicated with the heating water tank. According to the water circulation system of the cleaning device, the water inlet valve is used for importing clean water sources; the used sewage can flow to the heating water tank through the funnel, and is pumped by the water pump to the filter so as to be filtered after being heated, so that the sewage is recycled, and in addition, the cleaning device using the heated water can clean thoroughly; the water circulation system of the cleaning device is simple in whole structure, and energy-saving and environmental-friendly.