PNEUMATIC SOWING DEVICE OF GROUP SOWING Russian patent published in 2019 - IPC A01C7/04 

FIELD: agriculture; machine building.

SUBSTANCE: invention relates to agricultural machine building and can be used for seed sowing of seeds. Sowing apparatus comprises a housing with seed and vacuum chambers, between which a sowing disk is installed, having suction and suction holes arranged in groups, and plate-like reflector for removal of "extra" seeds, adjacent to end surface of sowing disk and controlled at inlet and outlet of suction holes in zone of removal of "extra" seeds. Disc suction holes are located on the side of seed chamber, and suction holes are located on the side of vacuum chamber. Suction holes in each group are located one after the other along the disc circle coinciding with the central circle of the vacuum chamber, and the suction holes are made in the form of an ellipse covering each group of holes with its area. Bridge between the vacuum chamber of the apparatus and the barometric pressure chamber in the seed emission zone at 1.5…2.0 mm is larger than the ellipsoidal suction hole length.

EFFECT: higher quality of group sowing of seeds by providing identical trajectory of their movement in a ploughshare, heap location in furrow and more effective removal of "extra" seeds.

1 cl, 3 dwg