The dust-free feeding station system is composed of manual unloading bin, anti pressure feeding platform, unloading bin, filter screen, filtration system, dust collection system, back blowing air bag and other components. The transfer device using negative pressure dust collection is suitable for bag opening and feeding of transferred materials in the production process. It can store the scraps first and then transport them, so as to improve the conveying capacity. It can be applied to a variety of production processes, either as a single powder feeding and unloading equipment, or as an important powder unloading in powder conveying systems such as one point multi feeding and multi-point feeding. It can be connected with positive and negative pressure conveying to feed the production line. Dust free feeding station The dust-free feeding station is used for unpacking, feeding, screening and unloading of small and medium-sized bags of materials in food, pharmaceutical, chemical and metallurgical industries. It is especially suitable for manual feeding and pre screening of powder materials. During unpacking, due to the function of dust collecting fan, material dust can be avoided flying everywhere.