Something about Centrifuge Equipment

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Industrial centrifuge was born in Europe. For example, in mid nineteenth Century, the textiles use a three-foot centrifuge to dehydrate and sugar factory use suspension of centrifuge to separate crystal sugar. Those centrifuge are manual discharge batch-filtering equipment.

Due to the improvement of unloading mechanism, there has been a continuous operation of the centrifuge in 1930s. Because of achieving automatic control, batch-filtering centrifuge also develop.

According to the structure and requirement, it can be divided into filter centrifuge, decanter centrifuge and separator. There is a cylinder which rotates around its axis with high speed called drum. In generally, it driven by electric motor.  The suspension (or emulsion) enters the centrifuge drum and was rotated with high speed equal to drum. The components are separated by centrifuge force and be discharged. Usually, the rotation speed determines effect of abruption.

centrifuge

The principle of its action has two kinds-centrifugal filtration and centrifugal sedimentation. Centrifugal filtration will let suspension produce centrifugal pressure in the centrifugal field and the pressure acts on the filter. Suspension becomes filtrate through the filter media and solid particles are trapped in the filter medium surface to achieve liquid - solid separation. Centrifugal sedimentation use the principle that the different density of suspension (or emulsion) will settle in different place in centrifugal field to achieve liquid - solid separation. 

Separator used in experiment analysis can clarify suspension and enriched solid particles. Such separator has a different structure type under normal pressure, vacuum, freezing conditions of operation.

 

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