| 摘要 |
It is desirable to be able to treat medium consistency (e.g. about 8-12% by weight) paper pulp suspensions with treatment liquid (e.g. a wash liquid), and to thicken the pulp to about 30-50% consistency at the same time. A moving (e.g. rotating) channel (18) is defined by a root wall (19) and upstanding side walls (20) -- some or all of which are perforated -- and treatment liquid is introduced by an arcuately elongated distributor (43) with perforated side walls (46) into the center of the pulp within the channel to flow axially, filtrate flowing out through the perforated walls. A pivoted wall portion (13) of the stationary housing (11) of the treatment device restricts outflow of the thickened pulp cake from the device, the cake flowing between a doctor blade (16) and the pivoted wall portions. |
