Method and device for cleaning of a fluid in a centrifugal separator

A method for purifying a fluid from contaminating particles in a centrifugal separator by means of a separation aid which is of higher density than the fluid and which binds said particles, comprising a centrifugal separator having a rotor body caused to rotate about an axis of rotation, the fluid which is to be cleaned is led via an inlet into a separation chamber delimited by the rotor body, separated particles are discharged via a first outlet and the fluid cleared of said particles is discharged via a second outlet, said fluid being mixed with an amount of separation aid, being supplied to the separation chamber and being purified therein by the pollutant particles being bound to said separation aid, which separation aid is forced out by the rotation of the rotor body to the periphery of the rotor body, a small flow of separation aid and particles bound thereto being discharged from the separation chamber via the first outlet, and a flow of purified fluid being discharged from the separation chamber via the second outlet, and conveying said separation aid and particles bound thereto along the inside of the rotor body by at least one conveying thread towards and out through the first outlet.

A method for purifying a fluid from contaminants, contaminant particles or other particles, comprising and subjecting the fluid which is to be purified to centrifugal force in a device which comprises surface-enlarging inserts, wherein the fluids are separated into their various phases, and that a sludge phase is discharged by a conveyor.

A device for purifying a fluid from contaminating particles, comprising:

• a rotor body rotating about an axis of rotation, which rotor body has a separation chamber with an inlet for fluid which is to be purified and a separation aid, a first outlet for separated particles, and a second outlet for fluid which has been cleared of said particles, the rotor body having at least one conveying thread for conveying separation aid and particles bound to it towards and out through the first outlet.