The molten aluminum degassing unit is an essential core purification equipment in the aluminum alloy casting process, designed specifically for series of furnaces such as Dongming centralized melting furnace, machine side tower furnace, and insulation furnace. Through the technology of rotary injection of inert gas, it efficiently removes hydrogen gas and oxide slag from the aluminum liquid, eliminating casting porosity and slag inclusion defects from the source. It is a key equipment for improving the purity of aluminum liquid and ensuring casting quality.