An improved seed distributor device (80) for agricultural machinery comprises a casing (79) which internally defines a distributing chamber (81) comprising an inlet (94) and a plurality of peripheral outlets (1-12) intended for the granular material to be spread. The inlet (94) is particularly suitable for being connected to a transport conduit (60) for a mixture of air and granular material to be spread, whereas the peripheral outlets (1-12) are particularly suitable for being connected to transport conduits (98) to convey the granular material towards the soil. The improved seed distributor device (80) further comprises an impeller (100) arranged proximate the inlet (94) of the distributing chamber (81).
