Dust filtering and liquid water preventing device

The utility model relates to the technical field of gas filtering devices, in particular to a dust filtering and liquid water preventing device which comprises a filtering device and a heating device which are arranged adjacently, an air inlet and an air outlet are formed in the outer wall of the filtering device, and a first-stage filtering piece and a second-stage filtering piece are arranged in the filtering device; a heating source and a heating plate are mounted in the heating device, so that the temperature of the interior of the filtering device is increased. The device can be applied to the exhaust port of the hydrogen circulating pump of the fuel cell, and is used for filtering dust, preventing impact of liquid water, effectively avoiding the problem that large-diameter dust particles enter an electric pile, protecting the electric pile, prolonging the service life of the electric pile, reducing the production time, improving the efficiency, avoiding the investment of traditional equipment and effect