PNEUMATIC SEEDING MACHINE Russian patent published in 2023 - IPC A01C7/04 

FIELD: agricultural engineering.

SUBSTANCE: invention relates to agricultural engineering, in particular to machines for sowing crop seeds. Pneumatic sowing device contains a hermetic hopper, a housing with a drive shaft, a combined seed and pneumatic chamber in the housing between two seeding discs with dosing elements installed on both sides of the drive shaft, an excess pressure pipe and two intake devices. Inside the housing, at each sowing disc, on the side of the hopper attachment, there is a cleaner, and behind it, in the direction of rotation of the sowing disc, a protective screen is installed in front of the intake device. In the cleaner and the protective screen, on the sides facing the working plane of the sowing disc, windows are made for the passage of dosing elements, the width of which is not less than the maximum diameter of the dosing elements. On the sowing disc, in addition to the metering elements, concentric rows of recesses are made, and the radius of one of them coincides with the radius of the circumference of the metering elements, and the recesses themselves are located between the metering elements. In the rest of the rows, adjacent recesses may touch, partially overlap or be located with a gap to each other. The rows of recesses may be spaced less than, greater than, or equal to the size of the recesses. Accordingly, a hermetic hatch for unloading seeds from the apparatus is made in the lower part of the apparatus body.

EFFECT: invention will improve the quality of seeding and improve the ergonomics of the device.

1 cl, 1 dwg