Waste plastic sorting system

The utility model belongs to the technical field of waste plastic sorting, and discloses a waste plastic sorting system. According to the system, different magnetic fluid density gradients are shown through the arrangement of magnetic fluid in a sorting area in an upper electromagnetic field or a lower electromagnetic field, and waste plastic to be sorted floats, suspends or precipitates in a magnetic fluid medium due to the density difference of the waste plastic to be sorted, so that sorting and collecting of the waste plastic are completed. The system can simultaneously sort various plastics and other impurities in one sorting process, and the sorting medium is easy to recycle; the sorting system does not need to occupy a large amount of places, and the water demand and the wastewater yield are extremely small. 本实用新型属于废旧塑料的分选技术领域，公开了一种废旧塑料的分选系统。该系统是通过分选区内的磁流体在上或下电磁场的设置而呈现不同的磁流体密度梯度，因待选废旧塑料的密度差异而使其在磁流体介质中漂浮、悬浮或沉淀从而完成废旧塑料的分选和收集。该系统能在一次分选过程中同时分选多种塑料以及其他杂质，且分选介质易回收；分选系统不需要占用大量场地，水的需求量和废水产生量极小。