| abstract |
A continuous counterflow wood pulp fiber washing mechanism and method including a looped traveling foraminous wire (10), a plurality of stock chambers (12, 13, 14, 15, 16,17) above the wire arranged sequentially in the direction of wire travel to provide a sequence of baths submerging the wire, pumps (40,41,43,44) beneath each of the baths (13,14, 15, 16, 17) following the first bath (12) for removing water drained through the wire and pumping the water back into the next upstream bath, means (9) for feeding stock into the first bath, and means (57, 58) for measuring the level of stock in the first bath (12) and for supplying fresh water to the last bath (17) as a function of the measured level, and pressing the stock between a roll (49) and the looped wire (10) in the last bath (17) and removing the stock from the roll (49) as it is carried upwardly out of the last bath (17), and removing the wash from the first bath (12) through a discharge line (52). |