Continuous powder unloading device

The utility model relates to a powder continuous unloading device, in particular to a powder continuous unloading device which is characterized in that nitrogen is recycled through a closed pneumatic conveying system, large air source consumption is avoided, energy consumption is reduced, nitrogen is adopted for conveying materials, and the problems that mechanical abrasion faults are caused by pipe chain conveying and product quality is affected are solved. The discharging device comprises a nitrogen control pipeline communicated with a nitrogen source, and the gas outlet end of the nitrogen control pipeline is used for being communicated with a gas source connector of the tank car. The device further comprises a discharging device and a closed pneumatic conveying system, the closed pneumatic conveying system comprises a feeding pipe, a bin top air return pipe and a conveying air compressor, and an air outlet in the top of the storage bin is communicated with a bin top dust removal filter. The feeding pipe,