Acoustic centrifuge

An acoustic centrifuge for separating liquids, comprising:

• a drive shaft;
• a rotor having a drum-shaped housing coaxially mounted on said drive shaft and having inlet and outlet ports in opposite end plates of said housing, in line with said drive shaft;
• a chamber being formed inside said housing and having a side wall coaxial therewith, which side wall constitutes a filtering partition;
• and an acoustic transducer mounted on said drive shaft and accommodated in said chamber, an emitting surface of said transducer facing said partition and being coaxial therewith;
• said chamber communicating only with said outlet port, the diameter of the latter being substantially larger than that of said inlet port, but smaller than that of said emitting surface, resulting in a pressure differential, between a liquid to be separated and a resulting filtrate, across said partition so that said chamber is kept filled up with the filtrate during the operation of the centrifuge, as a consequence of which uniform acoustic contact is established between said emitting surface and said partition, resulting in an effective regeneration of said partition.