DISTRIBUTOR OF PNEUMATIC GRAIN SEEDER Russian patent published in 2025 - IPC A01C7/08 

FIELD: agriculture.

SUBSTANCE: vertical distributor of a pneumatic grain seeder includes a horizontal section of a pneumatic line passing through an outlet into a vertical section, at the end of which there is a collector with a cover, a passive reflector and radially installed branch pipes for connection of additional air ducts or seed ducts. Passive reflector is made in the form of a concave circular cone with a generatrix in the form of a section of a logarithmic spiral curve with its axis coinciding with the longitudinal axis of the collector and is fixed by the base by means of a threaded pin to the inner part of the collector cover. Adjusting quick-release washer is installed between the base of the passive reflector and the inner part of the collector cover. In a rectangular window with length L=1.5D and width B, which is equal to the diameter of the bend D, closed aerodynamic curvilinear redistributor is rigidly fixed with a branch pipe for supercharging air from a pressure fan, which is parallel and incidentally located to the horizontal section of the pneumatic line. At the same time the spatial generatrix transversely rigidly installed in the rectangular outlet window of curvilinear blinds is congruent to the generatrix of the outer cut-out part of the curvilinear wall of the outlet. Free ends of the louvers are equally directed towards the passive reflector of the collector parallel to the axis of the styloid turbulence promoter.

EFFECT: invention will make it possible to reduce aerodynamic resistance of distributor of pneumatic grain seeder, to increase quality of sowing due to more uniform distribution of sowing material in seed tubes of the seeder and to reduce energy intensity.

1 cl, 1 dwg