FIELD: water cleaning.
SUBSTANCE: rotor comprises first rotor provided with first blades and second rotor provided with second blades. The first and second blades of the rotor extend in radial direction from its axis of rotation. The width of the first blades differs from that of the second blades in the direction along the circumference around the axis of rotation, or the blades are at different positions in the direction along the circumference. The outer surfaces of the first blades and/or the second blades can be provided with projections. The contaminant adhered to the separating diaphragm is removed under the action of vortex water flows of various tipes.
EFFECT: enhanced efficiency and reduced power consumption.
30 cl, 23 dwg
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