| 摘要 |
A dewatering suction apparatus for paper making machine having foil plates which form suction slots under a wet paper conveyor belt has an air outlet nozzle which injects air under the conveyor belt on the up-stream side of the suction slots generally counter to the direction of movement of the belt. The apparatus also has an auxiliary suction device on both side edges of the belt. The auxiliary suction device has a side edge sensing finger to control the size of the suction slot opening at each side edge of the belt.
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