Pneumatically pressurised seed guiding channel of a seed drill coulter

摘要

The guiding channel i.e. seed feeder line (17), has an air outlet opening formed as a continuous slot in a bending outer wall (23). The air outlet opening extends from a mouth (19) over a half length of a bending of the guiding channel opposite to a conveying direction (25). The air outlet opening forms a nut-like seed guiding path on an inner side (26) of the bending outer wall, where inner side surfaces (27) of the guiding channel are arranged convergingly in a V-shaped and/or funnel-shaped manner in a direction of the slot on a bending outer side (22).