Patent EP-3762336-A1 (EP)
Inventor: CSÓKA LEVENTE
IPC: C02F1/34
Filed: 2018-07-30
Abstract: The present invention relates to an equipment for the cavitation cleaning of water-based substances, which contains an external delimiting body (20) enclosing a reaction space (21), and an internal delimiting body (30) rotatably positioned in the reaction space (21) of the external delimiting body (20), where the internal delimiting body (30) has a rotation axle (31), the external delimiting body (20) and the internal delimiting body (30) are arranged in an equipment housing (10), the external delimiting body (20) is supplied with at least one inlet opening (22) suitable for introducing the substance to be cleaned, and an outlet opening (23) serving for discharging the cleaned substance, the internal delimiting body (30) is delimited by a rotating body mantle shaped external covering surface (32) and by end surfaces (33, 34) closing off two ends (32a, 32b) of the external covering surface (32), while the external delimiting body (20) has a cylindrical mantle shaped internal covering surface (24) encompassing the reaction space (21), the external covering surface (32) of the internal delimiting body (30) and the internal covering surface (24) of the external delimiting body (20) are coaxial with each other, the internal delimiting body (30) has cavitation inducing elements (40) suitable for influencing the physical characteristics of the substance to be cleaned, the rotation axle (31) is firmly fixed to the internal delimiting body (30) coaxially to the axis of rotation of the internal delimiting body (30), but only at the second end surface (34) of the internal delimiting body (30), and therefore the rotation axle (31) is only rotatably connected to the external delimiting body (20) at one location, while the inlet opening (22) is located in the external delimiting body (20) opposite the first end surface (33) of the internal delimiting body (30), the outlet opening (23) is formed in the external delimiting body (20) opposite the second closing surface (34) of the external delimiting body (20) closing off the internal delimiting body (30). The characteristic feature of the invention is that at least one post-supply opening (25) is established in the part of the internal covering surface (24) of the external delimiting body (20) neighbouring the external covering surface (32) of the internal delimiting body (30), and the post-supply opening (25) is connected to the supply pipe (11) connected to the inlet opening (22) via a linking pipe (12) so as to allow the flow of liquid. The invention also related to a method for the cavitation cleaning of waters, during which a substance to be cleaned is transported from a supply pipe (11) through the inlet opening (22) to the first end surface (33) of the rotating internal delimiting body (30) and introduced into the reaction space (21) delimited by the internal covering surface (24) of the external delimiting body (20) standing along this closed first end surface (33) and by the external covering surface (32) of the rotating inner delimiting body (30), the substance to be cleaned introduced into the reaction space (21) is forced to flow in an axial direction, and a shear force is exerted onto the axially flowing substance to be cleaned with the help of the external covering surface (32) of the rotating internal delimiting body (30), beside which bubbles are formed in the block phase of the substance to be cleaned by the cavitation inducing elements (40) established in the external covering surface (32) of the rotating internal delimiting body (30), and the cleaning of the substance to be cleaned is performed by the cavitation effect resulting in shock waves created when the bubbles burst. The characteristic feature of the method is that a part of the substance to be cleaned is directed into the linking pipe (12) connected to the supply pipe (11), and is directly guided onto the external covering surface (32) of the internal delimiting body (30) via the linking pipe (12) and out through the post-supply opening (25) and in this way the treating of the entire amount of substance to be cleaned is performed with the use of at least two independent supply points, and the cleaned substance is discharged from the reaction space (21) after a treating time of from 1 to 120 seconds.