Water circulation device for fireproof water film

The invention relates to a water circulation device for a fireproof water film. Primarily, a water film system is provided with a water storage tank. A water supply pump is connected to an outlet of the water storage tank and a perforated pipe. Furthermore, a pumping pump is connected to an inlet of the water storage tank and a water reservoir corresponding to the perforated pipe. A filter unit is connected between the pumping pump and the water reservoir. Accordingly, not only can a water film be formed on the surface of a rolling door or a glass to be as a fireproof barrier to block the burning of flame when a fire happens, but also the water which flows downwardly from the surface of the rolling door or the glass can be recycled to reduce water wastage. Moreover, it can avoid the satiation that no water can be used happens in water scarcity areas, so as to increase the practicability and efficiency for the whole implementation.