PNEUMATIC VACUUM SOWING UNIT WITH UNIVERSAL DOSING SYSTEM Russian patent published in 2022 - IPC A01C7/04 

FIELD: sowing technology.

SUBSTANCE: invention relates to the field of sowing technology. The pneumatic sowing machine includes a seed hopper divided by a partition into two parts, a fan, an air duct, a rarefaction chamber, a skid coulter and sowing discs. Seeding discs with suction holes and a connecting sleeve are mounted on the same shaft. Each sowing disc is equipped with a seeding rate regulator, made in the form of a lining disc rigidly fixed at the end of the connecting fitting with an outer diameter smaller than the diameter of the sowing disc, and six blades cut out on it. At the same time, the seed rate regulator is rigidly connected to its seeding disc and is mounted with the possibility of displacement relative to it. The suction holes of the sowing discs are located on a circle with a distance of 10 mm from their edge and are made in the form of six slots 2 mm wide and 20 mm long. The width of the vanes of the seed rate regulators is equal to the length of the slots of the seeding discs together with their overlaps, and the distance between the slots is at least not less than their length. In addition, the second end of the fitting of the seed rate regulator is made with six grooves and a latch in the form of a lever with a spring inserted into one of the grooves. On each fitting, the receiving chamber of the sowing unit with a tedder and an asterisk are rigidly fixed with the possibility of dismantling.

EFFECT: invention will improve the operational reliability and expand the functionality of the device.

1 cl, 6 dwg