Inert powder packing machine is widely used in 3D printing, pharmaceutical, chemical and other industries, the equipment With inert protection circulation, clean 02 steam, and other organic gases, for packing powder and granule materials prevent from oxidation or chemical reactions , extend the storage time of powder. For example 3D printing industry adopted by the metal aluminium powder, titanium powder, etc., if directly exposed to the air for filling and sealing, aluminium powder or titanium powder between the gap will be filled With air, will be oxidation after a period of time, as well as adsorption of water vapor in the air, make powder binder into pieces or group, will affect the quality of 3D printing finished workpiece.