LIQUID PROCESS AND CONTINUOUS FILTERING DEVICE USING HIGH POWER DENSITY ULTRASOUNDS

摘要

The invention concerns a liquid process and continuous filtering device, characterised in that it comprises in combination: a) a modular ultrasonic processing unit (12) in the form of a tubular metallic body (11) with a cylindrical inner surface (13) and with circular cross section, open at both its feeding (10) and evacuating (15) ends, the outer surface of said tubular metallic body having proximate to the nodal zone a ring (17) coaxial with said tube and projecting radially, said ring being equipped at its periphery with an ultrasound converter (19) projecting radially and whereof the frequency is equal to the vibration frequency of said ring (17) and to the longitudinal vibration frequency of said tubular metallic body (11); and b) a cylindrical filtering element (14) having a minimal filtering surface of about 50 cm<2> and preferably of about 80 cm<2> with a mesh opening less than about 20 mu m, which is arranged inside the tubular metallic body (11) and coaxially therewith between its feeding (10) and evacuating (15) ends, the specific ultrasonic power generating capacity dissipated inside the tubular metallic body being higher than about 2 Watt per cm<2> of filtering surface.