The decanter is mainly composed of bowl (drum), scroll (conveyor), differential mechanism ( gearbox) and base, the bowl and scroll rotate in a same direction with a rated different speed, the feeding material enters the inner drum of scroll through feeding passage continuously, then into the bowl after speeded, under the centrifugal force, the heavyer solid phase sediments on the bowl inner wall and forms a layer. with the rotation of scroll, the solid phase is discharged from the discharge port of the bowl end. And the water is discharged from the light phase port.

The decanter is widely applied in food, environment protection, chemical, nonore anomaly, pharmacy industries etc.