Suction roll with turbulence suppression element

Details Suction roll with turbulence suppression element Suction roll with turbulence suppression element

1990-08-14

1991-06-18

Hastings, Karen M.

Paper making and fiber liberation

Apparatus

Running or indefinite length product forming and/or treating...

291211, 34117, 34120, 162368, D21F 502

Patent

active

050247298

ABSTRACT:
The invention relates to a suction roll (10) comprising a turbulence suppression element (16) located in the vicinity of the end of an external suction pipe (15). The turbulence suppression element (16) comprises at least one sheet member and is fitted relative to the end of the suction pipe (15) in such a way that turbulence in the intake air during the suction phase is substantially prevented and that a low air pressure is thus maintained at a desired, approximately constant value on the inner surface of the roll shell along the entire roll width and the quantity of suction air is also maintained at a desired, approximately constant value through the perforated sections (14) of the roll shell.

REFERENCES:
patent: 2969837 (1961-01-01), Reynar
patent: 3201309 (1965-08-01), Stuebe
patent: 3827855 (1974-08-01), Blake
patent: 4207998 (1980-06-01), Schmid
patent: 4564418 (1986-01-01), Blumle
patent: 4932138 (1990-06-01), Liedes

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