The role of the sedimentation centrifuge

October 30, 2020

The sedimentation centrifuge is a new type of horizontal screw discharge centrifuge. Its working principle is to use the solid-liquid specific gravity difference and expand it several thousand times by the centrifugal force field. The solid phase is settled under the action of centrifugal force. Separation of solid and liquid, and discharge of the body separately under the action of a special mechanism. The entire feed and separation process is continuous, closed, and automated. The decanter centrifuge is mainly composed of a high-speed rotating drum, a spiral and a differential that are turned to the same speed as the drum and whose rotational speed is slightly higher or lower than that of the rotating drum.
When the suspension to be separated enters the drum through the feed pipe and the spiral outlet, the high-speed rotating drum generates a strong centrifugal force to settle the solid phase particles larger than the liquid phase density to the inner wall of the drum due to the rotation speed of the screw and the drum. Differently, there is relative motion between the two (ie, the difference in rotational speed). The relative movement of the inner wall of the drum is pushed to the outlet of the small end of the drum by the relative movement of the spiral and the drum, and the separated supernatant is removed from the centrifuge. The Other end is discharged.
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