Skimming blade with wave shaped troughs for a papermaking machine
AssigneeFeldmuehle Aktiengesellschaft
InventorKarl-Dieter Fuchs
Life of this patent
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Abstract
Skimming blades in papermaking machines have a dewatering surface 4 adjoining the supporting surface 3 supporting the wire 1. To sustain the desired microturbulence of the fiber suspension 2 on the wire 1, the dewatering surface 4 is provided with troughs 7. The troughs 7 have a wavy shape, in which the wave crests 5 have a smaller radius r than the wave valleys 6.
Claims13
A skimming blade for removing water from a fiber slurry on a moving wire, having a direction of travel, of a papermaking machine, comprising a blade having a supporting surface to support the wire and run substantially paprallel to the wire, which is adjoined by at least one dewatering surface serving for vacuum dewatering, said dewatering surface being inclined with respect to the supporting surface by an angle of 5 to 360 minutes and having a plurality of troughs which extend at an angle of 90 to 5 degrees to an imaginary extension line of the supporting surface at a level of an envelope line of the dewatering surface without passing downward through the skimming blade.
Dependencies are inferred from the claim text.