Set of ribs in a dewatering device in a paper machine

A dewatering member in a paper machine through which a pair of wires defining a twin-wire zone run in a machine direction, comprising

• a loading unit arranged in a loop of a first one of the wires adjacent the twin-wire zone, said loading unit comprising loading ribs spaced from each another in the machine direction and extending in a direction transverse to the machine direction and loading means for loading said loading ribs toward the twin-wire zone, at least two of said loading ribs each having an adjustable height position relative to the wire, said loading unit further comprising a plurality of connecting mechanisms for articulatably interconnecting the ribs of at least one adjacent pair of said at least two ribs, said connecting mechanisms being arranged at a distance from one another at discrete locations in the transverse direction, each of said connecting mechanisms at each location in the transverse direction comprising a set of a first intermediate part pivotally coupled to both of said interconnected ribs and a second intermediate part pivotally coupled to both of said interconnected ribs such that four pivotable joints are defined between said first and second intermediate parts and said interconnected ribs, and
• a drainage box arranged in a loop of a second one of the wires opposite said loading unit, said drainage box comprising ribs arranged in the machine direction and extending in the transverse direction and means for drawing water from the twin-wire zone, said ribs in said drainage box being positioned to face the spaces between said loading ribs in said loading unit.

A set of ribs in a dewatering device in a paper machine over which a wire runs in a machine direction, comprising

• first and second adjacent ribs extending in a direction transverse to the machine direction arranged one after the other and at a distance from one another in the machine direction, said first and second ribs each having an adjustable height position relative to the wire,
• frame parts for supporting a respective one of said first and second ribs, and
• a plurality of connecting mechanisms for articulatably interconnecting said first and second ribs, said connecting mechanisms being arranged at a distance from one another at discrete locations in the transverse direction,
• each of said connecting mechanisms at each location in the transverse direction comprising
• first and second elongate intermediate parts arranged at different height positions relative to the wire and having first and second opposed ends,
• means defining a first pivotable joint for pivotally coupling said first end of said first intermediate part to said frame part of said first rib,
• means defining a second pivotable joint for pivotally coupling said second end of said first intermediate part to said frame part of said second rib,
• means defining a third fourth pivotable joint for pivotally coupling said first end of said second intermediate part to said frame part of said first rib, and
• means defining a fourth pivotable joint for pivotally coupling said second end of said second intermediate part to said frame part of said second rib.

A dewatering member in a paper machine through which a pair of wires defining a twin-wire zone run in a machine direction, comprising

• a loading unit arranged in a loop of a first one of the wires adjacent the twin-wire zone, said loading unit comprising
• loading ribs spaced from each another in the machine direction and extending in a direction transverse to the machine direction and loading means for loading said loading ribs toward the twin-wire zone, at least first and second adjacent ones of said loading ribs each having an adjustable height position relative to the wire,
• frame parts for supporting a respective one of said first and second ribs, and
• a plurality of connecting mechanisms for articulatably interconnecting said first and second ribs, said connecting mechanisms being arranged at a distance from one another at discrete locations in the transverse direction, each of said connecting mechanisms comprising first and second elongate intermediate parts arranged at different height positions relative to the wire and having first and second opposed ends, means defining a first pivotable joint for pivotally coupling said first end of said first intermediate part to said frame part of said first rib, means defining a second pivotable joint for pivotally coupling said second end of said first intermediate part to said frame part of said second rib, means defining a third fourth pivotable joint for pivotally coupling said first end of said second intermediate part to said frame part of said first rib, and means defining a fourth pivotable joint for pivotally coupling said second end of said second intermediate part to said frame part of said second rib;
• and
• a drainage box arranged in a loop of a second one of the wires opposite said loading unit, said drainage box comprising ribs arranged in the machine direction and extending in the transverse direction and means for drawing water from the twin-wire zone, said ribs in said drainage box being positioned to face the spaces between said loading ribs in said loading unit.