| 摘要 |
Suction box for a machine producing a web containing cellulose fibres, said suction box being placed inside a rotating suction roll (2) provided with a perforated jacket (1), said suction box (3) comprising a suction chamber (4) having a suction inlet (6) placed against the interior surface (5) of the suction roll and a suction connection (7) for creating a negative pressure in the suction chamber and sucking water through the perforations (8) in the suction roll into the suction chamber. The suction inlet (6) is provided with ribs (10) laid in a direction transvserse to the diraction of rotation (9) of the suction roll (2) and forming suction slits (11) in the logitudinal direction of the suction roll near the interior surface (5) of the suction roll.
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