Centrifugal separator for cleaning gas

A centrifugal separator for cleaning gas containing contaminants comprising:

• a stationary casing, enclosing a separation space through which a gas flow is permitted;
• a gas inlet extending through the stationary casing and permitting supply of the gas to be cleaned;
• a rotating member comprising a plurality of separation members arranged in said separation space and being arranged to rotate around an axis of rotation;
• a gas outlet configured to permit discharge of cleaned gas and comprising an outlet opening through a wall of the stationary casing;
• a drainage outlet arranged in a lower portion of the stationary casing and configured to permit discharge of liquid contaminants separated from the gas to be cleaned;
• a drive member for rotating the rotating member;
• and
• a stationary axial surface extending into said separation space,
• wherein said rotating member comprises a rotatable axial surface arranged radially outside said stationary axial surface,
• wherein said rotatable axial surface is arranged at the gas inlet such that liquid contaminants present in the gas to be cleaned is pressed against the rotatable axial surface during operation, and
• wherein said rotating member comprises a brim portion extending radially inwards from said rotatable axial surface such that the rotatable axial surface is arranged at a larger radius than an innermost portion of the brim portion, said brim portion forming a ring-shaped sealing gap between the rotating member and the stationary axial surface.