2.Working principle of the used decanter centrifuge:
There is spiral which is the feeding spiral which is has the same axis with the drum.The spiral and the drum rotate in different speed but in the same direction.The rotate difference is caused by the differential.The suspension enters the spiral through the feeding pump in the centre, when it starts to speed up the material goes into the drum.Under the effect of the centrifuge force, the relatively heavy solidoid sediments into slag blanket on the surface of the drum wall, then the spiral push the slag blanket to the drum cone section for further dehydration, latter it will be discharged from the small section slag hole.While the relatively light liquicdoid forms the inner liquid cycle, and it will be discharged from the large end overflow gate.