Patent ID: 8096933

Claim:
A centrifuge with an electric motor ( 46 ), comprising a centrifuge outer frame ( 47 ), a heavy liquid collecting tank ( 18 ), a lower hollow shaft ( 22 ), two or more centrifugal units, an upper hollow shaft ( 38 ), and a light liquid collecting tank ( 41 ), wherein the heavy liquid collecting tank ( 18 ), the lower hollow shaft ( 22 ), the upper hollow shaft ( 38 ), and the light liquid collecting tank ( 41 ) are all fixed to the centrifuge outer frame ( 47 ), the centrifugal units are fixed between the upper hollow shaft ( 38 ) and the lower hollow shaft ( 22 ), a motor ( 46 ) is connected to the upper hollow shaft ( 38 ) and drives the upper hollow shaft ( 38 ) to rotate, the upper hollow shaft ( 38 ) is fixed to the two or more centrifugal units connected in series and drives the centrifugal units to rotate, a hollow portion of the upper hollow shaft ( 38 ) communicates with the light liquid collecting tank ( 41 ), the two or more centrifugal units connected in series are fixed to the lower hollow shaft ( 22 ) and drive the lower hollow shaft ( 22 ) to rotate, the heavy liquid collecting tank ( 18 ) is a casing formed between the centrifuge outer frame ( 47 ) and the centrifugal units, and the heavy liquid collecting tank ( 18 ) is fixed to the centrifuge outer frame ( 47 ) and is sealed by seal strips and the centrifugal units.