SOWING DEVICE FOR COMBINED SOWING Russian patent published in 2016 - IPC A01C7/04 

FIELD: agriculture.

SUBSTANCE: invention relates to pneumatic sowing apparatus, which can be used in sowing machines, mainly for single-seed sowing of seeds of two different crops at combined plantations. Air operated seeder unit consists of seed hopper divided by web, vertical seeding plate through conical cells, air nozzle, extruding seeds and side walls. Sowing disk is double, parts of which are rigidly fixed to each other. On side surface of cone cells opposite each other at 3/4 of its depth has two through holes at acute angle to base of cell. Value of ratio of diameter D₁ through hole to lower diameter D₂ conical cell depth h and to upper diameter D₃ is determined by condition D₁:D₂:h:D₃=1:2:6:8. On inner surface of each part of disk at conical cells is groove for pusher. Latter is made in form of elastic resilient roller, fixed in lower part of side wall.

EFFECT: invention has high operational reliability at simplified design.

1 cl, 3 dwg