SG model centrifuge is a three-column scraper bottom discharge centrifuge, which can operated intermittently. The machine's procedure. such as feeding. separating, washing, making oil, is completed by person's cooperation and machine's control. The machine has the follwing advantages; smooth rotation, small shock, easy and convenient operation, safety and reliability, It has good washing and separating results, and large adaptability to materials, The machine is suitable for separating of suspended liquid, whose solid-phase grain is larger than 0.05mm In production's process narrow scraper and lowspeed clise discharge are introduced; cake's function is reliable and the product's crystal is not damaged easily, So it fits the mobile maferials well. The machine corresponds to GMP series design.