Operating principle of the shot blasting machine separator

The operating principle of a shot-blasting machine separator relies primarily on the effective separation of blast media (such as steel shot, aluminum shot, etc.) from impurities and debris using a combination of magnetic separation, screening, and air separation. The separator typically consists of a screw conveyor, a separator housing, primary and secondary magnetic separation drums, a flow control plate, and a magnetic pole adjustment mechanism. When the mixture of media and sand enters the separator via the screw conveyor, it is distributed evenly and flows through the flow control plate—forming a curtain-like stream—onto the first-stage magnetic separation drum. During this process, metallic particles are attracted to the magnetic drum and rotate with it; they are carried to a non-magnetic zone and drop into the metal hopper. Meanwhile, non-metallic materials proceed to the second magnetic separation drum for a secondary separation stage. This two-stage magnetic separation process yields significantly higher efficiency compared to traditional single-stage systems. Additionally, the separator incorporates components such as screens, fans, and ducts to further separate steel shot or sand from impurities through screening and air separation. This separation method effectively enhances the machine's operational efficiency and maximizes the utilization rate of the blast media. Thus, the shot blasting machine separator ensures the effective separation of blasting media and impurities through the combined functions of magnetic separation, screening, and air separation, thereby enhancing operational efficiency and media utilization.