Rotary bark screen

Details Rotary bark screen Rotary bark screen

1979-07-25

1980-12-23

Halper, Robert

Solid material comminution or disintegration

Apparatus

With separation or classification of material

209 443, 209297, 209415, B02C 2308, B07B 124

Patent

active

042405890

ABSTRACT:
A self cleaning rotary screen apparatus is disclosed which comprises an outer shell formed from a plurality of spaced cylindrical hoops that are welded to a plurality of longitudinal bars which extend the full length of the shell. The hoops are variably spaced along the length of the shell to provide different sized screen openings. In addition, for aiding in the screening operation and for keeping the material moving through the screen, an internal helical blade construction comprising a multiple helix at the entrance to the screen and a single helix thereafter is welded to the longitudinal bars over the full length of the shell.

REFERENCES:
patent: 2451 (1842-02-01), Hort
patent: 1169986 (1916-02-01), Middaugh
patent: 2173314 (1939-09-01), Rylander
patent: 3455452 (1969-07-01), Yetter

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