DEVICE FOR STIRRING LIQUIDS AND LIQUID MIXTURES
FIG3 shows, in a schematic way, a stirring container provided with four stirring devices, according to an embodiment of the present invention
FIG3 shows in a schematic way a stirring container provided with four stirring devices 21, according to an embodiment of the present invention. Each of the stirring devices 21 comprises a wall flange 3 for attachment along the inner side of the stirring container wall 1. This stirring container wall 1 thereby provides the corresponding attachment flange 2. Depending on the embodiment, the wall flange 3 itself is attached along the inner side or along the outer side to the attachment flange 2; in the present embodiment, that is along the outer side. Each of the stirring devices 21 now further comprises a rotor 11 that ends in a stirring shaft 12. This stirring shaft 12 is now provided with one or more stirring elements 13, under de form of rudder propellers. The length of the stirring shaft 12 can vary. Of course, other stirring elements 13 can be chosen and/or parts thereof, such as propellers blades, can also be provided directly along the outer side of the holder 11a. The stirring devices 21 are mounted out of centre in the stirring container.
schematic
12
stirring shaft
11
rotor
18
space
21
device devices
3
wall flange
13
stirring element stirring elements
['1. A device (21) for stirring liquids and liquid mixtures, - said device (21) comprising a housing (7a, 7b) extending in an axial direction, in which the housing (7a, 7b) comprises a proximal end and a distal end, and defines an internal volume that is closed at its distal end by a distal cover (7b), and that is radially enclosed by a cylindrical side wall (7a) of the housing (7a, 7b), - said device (21) further comprising a rotor (11) that is adapted for being enclosed by liquids and liquid mixtures, and that is connected to at least one stirring element (13), in which the rotor (11) defines a holder (11a) that receives said housing (7a, 7b) along its distal end, in such a way that the rotor (11) sits onto the housing (7a, 7b), mutually rotatable about the axial direction, wherein said holder (11a) further comprises a plurality of permanent magnets (14), and wherein said device (21) further comprises a plurality of electromagnetic windings (9), which windings (9) are comprised by said internal volume, and which windings (9) are configured for interacting electromagnetically with the permanent magnets (14), through said side wall (7a) of the housing (7a, 7b), thereby exercising a force-couple onto the rotor (11), around the axial direction,  characterized in that  said rotor holder (11a) is mounted onto the side wall (7a) of the housing (7a, 7b) by means of a proximal slide bearing (23), said bearing (23) providing a direct slide bearing of radial rotary type.', '8. The device (21) of the previous claim 7,  characterized in that  said holder (11a) encloses a semi-open space (18), that is positioned between the distal end of the holder (11a) and the distal end of the housing (7a, 7b), and in which said opening (19) realizes a fluid connection of the semi-open space (18) to the environment of the stirring device (21).']