Patent ID: 8168041

Claim:
A device for the dilution of dewatered cellulose pulp, comprising; shredder screw means for fragmenting pulp to a particle size in an interval of 5-40 millimeters, the shredder screw means having an outlet defined therein, the shredder screw means containing the fragmented pulp, a vertical standpipe connected to the outlet of the shredder screw means, the standpipe carrying a flow of the fragmented pulp flowing under free fall, the standpipe having a distribution chamber defined therein at an upper end of the stand pipe, the distribution chamber arranged concentrically around the standpipe, at least four nozzles arranged around a circumference of the distribution chamber, the nozzles being oriented inwardly towards a center of the flow to add a dilution fluid under pressure into the stand pipe, the nozzles being disposed above a liquid level of diluted pulp established in the standpipe, a feed arrangement disposed at a bottom of the standpipe for feeding the pulp to subsequent treatment stages, a pump disposed at the bottom of the standpipe and in operative engagement with the feed arrangement, and the standpipe having no mechanical agitator disposed above the liquid level.