Hbjs aluminum alloy centrifugal fan is a special fan specially designed for paper feeding and dust collection of carton mechanical roller. The impeller is semi open, which is cast with 10 forward bending pieces and shaft disc body. The fan has the advantages of high pressure, stable pressure curve, not easy to accumulate dust, wear resistance, explosion-proof, no spark and so on. The product is also suitable for conveying impurities such as fiber and velvet in the enterprise dust removal system and discharging air containing wood debris and dust. The temperature of the conveying medium shall not exceed 80 ℃.