Device for cleaning air dust

The utility model discloses a device for cleaning air dust, belonging to the field of a large transfusion producing and cleaning device. The utility model is provided with a liquid curtain chamber composed of an inner cylinder, an outer cylinder and a top cover of the outer cylinder, an air inlet, a cleaned air outlet, a liquid discharging pipe and a high-pressure liquid inlet pipe are arranged on the liquid curtain chamber, and a horizontal liquid curtain forming disc and a liquid curtain nozzle are arranged on the high-pressure liquid inlet pipe. The device for cleaning air dust is arranged between a primary-efficiency and a medium-efficiency filtering stages to enhance the cleaning degree, reduce the dust depositing quantity of a medium-grade and a high-grade filters and extend the service lives of the medium-grade and the high-grade filters.