Aluminum alloy low-pressure casting protection device

The utility model discloses an aluminum alloy low-pressure casting protection device which comprises a sealing cover, the sealing cover is arranged on a casting platform through a sealing assembly, and a sealing space for containing a casting assembly is formed between the sealing cover and the casting platform. The sealing cover is connected with a protective gas inlet assembly and a pressure relief valve, protective gas is conveyed into the sealed space through the protective gas inlet assembly, and air in the sealed space is exhausted through the pressure relief valve by means of the protective gas. According to the low-pressure casting mold filling device, oxygen can be exhausted through protective gas, aluminum alloy low-pressure casting mold filling under the protection of the protective gas atmosphere is achieved, oxidation in the aluminum alloy mold filling process is reduced, and the casting quality is improved. 本实用新型公开了一种铝合金低压铸造保护装置，包括密封罩，所述密封罩通过密封组件设在铸造平台上，密封罩与铸造平台之间形成容纳铸造装配体的密封空间；所述密封罩上连接有保护气进气组件和