34
Crop
Screens for outer drum
On the outer drum the crop passes across the
screen while the small impurities will fall through.
Thus it is the slot dimensions of the outer screen
that determine the size of the impurities arrested.
In selecting your screen you should also consider
the grain size, as small-sized grains will also be
Outer screens
sepsrated by a screen with too large slot dimensi-
ons.
If an outer screen with oblong holes is used, it is
recommended to mount brushes to keep the
screens clean. For the sorting of malting barley the
brushes must be mounted (optional extra).
Small-sized and thin grains
Normal pre-cleaning
Sorting according to British standard
Minimum content of "good" grains
in screenings (reduced capacity)
Normal sorting of malting barley
Hole dimension (mm)
Malting Peas/
Barley Barley Wheat Rye Oats Rape soy Maize Sun-
(Sorting) seed beans flower
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