Grain-singulating apparatus with separating device, and seeder with grain-singulating apparatus

A grain-singulating apparatus comprising:

• a metering chamber and a singulating disk arranged therein;
• at least one supply duct for feeding a singulating air flow generated by a blower into said metering chamber for the singulation of grains by way of said singulating disk;
• a conveying duct for supplying the grains stored in a storage container, in the form of a mixed grain/air flow generated by the blower;
• a separator for the separation of the grains from said mixed grain/air flow and for providing the grains via a seed chute to said singulating disk for singulation and for feeding the resulting extracted air flow via an extracted air duct separate from said supply duct to said grain-singulating apparatus for the singulation of the grains,
• wherein said extracted air duct has an outlet opening for the outflow of said extracted air flow and extends from said separator through said seed chute such that said outlet opening opens into said metering chamber.