Research on Identification of the Noise and Vibration of a Decanter Centrifuge

Identification of noise and vibration is essential in dual-rotor systems with slightly different rotating speeds. This paper investigates the noise and vibration of a decanter centrifuge. Experimental investigations on a horizontal decanter centrifuge indicate that noise is correlated with the vibration in the Z axis. Noise can be classified as mechanical, fluid, air, or coupling noise. Increasing the spiral vane angle reduces mechanical and coupling noise. The optimal angle for a spiral blade is 8°to 10°. Increasing the screw-blade thickness reduces coupling noise. These findings are important in correlation studies on noise and vibration and in optimizations on the structure of a decanter centrifuge.