Horizontal Decanter Centrifuge

Specifications

Multiple safety protection: bowl speed and differential speed detection, over-vibration protection, motor overload and overheat protection, bearing temperature monitoring, conveyor torque protection and gas-tight explosion-proof protection. 

Technical Parameters                                                                                                                                       

Structure drawing:                                                                                                                    

Separation Principle

1. Gravity Separation

On account of difference in density, the mixed liquid in the container, after a period of time, is gradually divided into 2 layers. The heavy phase particle of the mixed liquid deposits to the bottom of the container, while the light phase suspends to the upper surface. A rather distinctive dividing plane forms between the light phase and heavy phase. The separation speed is affected by the difference of density between the light phase and heavy phase that make up the mixed liquid. The larger the difference in density is, the faster the separation speed will be.

2. Centrifugal Separation

When the container filled with mixed liquid rotates at high speed around its own axis, due to the difference in density between the two phases making up the mixed liquid, they bear different centrifugal force. Under the action of a larger centrifugal force, the heavy phase in the mixed liquid quickly subsides on the inner wall of the drum, while the light phase slowly adhere close to the surface of heavy phase. The faster the container rotates, the larger the difference in centrifugal force borne by the light and heavy phases that make up the mixed liquid, and the faster the separation speed. When the container is equipped with such parts as feeding mainly comprised of such parts as drum, helical propeller, planet gear differential mechanism, pedestal, hood and lubricating system.

Typical structures of the decanter centrifuge  

Counter-current type After blended liquid flows into drum, the cleaned solution and the cake move conversely in separating, each flowing toward its own outlet. The counter current type is a king of normal one and suitable for most separating situations.

Co-current type After blended liquid flows into drum, the cleaned solution and the cake move in the same direction when separating, after separation, the cleaned solution flows back and is discharged through backfiow connection in order that cake is not washed away by feed liquid when feedng. This rye is more suitable for separation of materials witn Iow concentration and difficult to separate. 

Three phase separstion type After two liquid phases and one solid phase with differential density come in to drum, under a centrifugal force, solid phase settles and the two liuquid phases are stratified, thus liquid-liquid-solid separation is realized. This type is suitable for such a three-phase separation situation as liquid-liquid-solid with differential density.