PGZ centrifuge is a kind of filtering equipment with scraper bottom unloading and intermittent operation. The material is added to the drum from the top. Under the action of centrifugal force field, the liquid phase passes through the filter medium and is discharged from the outside of the machine, and the solid phase is retained in the drum. After the drum is decelerated, it is scraped off by a scraper and discharged from the bottom of the centrifuge. It can automatically complete the processes of feeding, separation washing, dehydration, unloading, etc., and can realize long-distance and short-distance operation. It has the characteristics of stable operation, convenient operation, high degree of automation, large processing capacity, and good separation effect.