With several fan-shaped filter disks, which may overturn unloaded materials, installed on the annular internal and external frames, and can be connected with the defect air disk located in the center of the internal frame 由若干個可傾翻卸料的扇形過濾盤,安置在環(huán)形內(nèi)外框架上,并與位于內(nèi)框架中心的錯氣盤連接而成。