FOERFARANDE FOER PUMPNING AV HOEGKONCENTRERAD FIBERSUSPENSION MED CENTRIFUGALPUMP.

摘要

The invention relates to a method for the fluidisation of a highly concentrated fibre suspension for pumping with a centrifugal pump. To enable the pulp to be fed into the pump vanes in a fluidised state, the pulp flowing in the suction duct 2a between the mouth of the suction duct 2a and the leading edge of the pump vanes 4 over a relatively long axial distance and/or immediately in front of the leading edge of the pump vanes 4 is brought into a radially reciprocating movement by means of the blades of a rotor (3 and/or 11), around the outer edges of which blades the pulp can flow freely at all angles of rotation of the rotor, the rotational movement generated by the rotor together with the reciprocating radial flow causing a thoroughly turbulent flow over the entire cross- sectional area of the suction duct 2. <IMAGE>