METHOD AND DEVICE FOR DETERMINING CONTENT OF INSOLUBLE RESIDUES IN SPENT OIL Russian patent published in 2010 - IPC G01N33/26 B04B1/00 

FIELD: chemistry.

SUBSTANCE: in the method which involves centrifuging a prepared oil solution and subsequent suspension of the obtained residue, deposition takes place in a thin annular layer of the oil solution which rotates together with a rotor. Centrifugation is done once and decantation of the centrifuge effluent is done automatically when the centrifugal rotor stops. In the device which has a housing, an electric motor with a vertical shaft, the rotor is made in form of a reservoir with a removable cover, in which there are two cavities for putting the analysed oil solution, depositing impurities and decantation of the centrifuge effluent. The rotor also has a removable cylindrical insert made from metal foil for collecting residues which undergoes control weighing. The rotor is driven by the shaft of the electric motor through an overrunning centrifugal clutch which automatically connects them in startup and centrifugation mode and also disconnects when the electric drive is switched off, thereby providing smooth free run-out of the rotor with the filtered centrifuge effluent.

EFFECT: increased accuracy, simplification and faster determination.

3 cl, 1 dwg