Centrifugal spreader for granular fertilizer

摘要

The discharge blades (11,12) have at least on their inner side, at the start section, a roughened surface so that the slide and/or friction behaviour remains even, when the fertilizer grains rub against the inside of the blades. The roughened surface can be formed by uneven areas and should be sufficient so that the fertilizer rubbing on the inside of the blades does not affect the even distribution. The roughened or uneven areas can be formed on an insert part which fits onto the discharge blades.