SEED METERING DEVICE IN AGRICULTURAL MACHINE Russian patent published in 2014 - IPC A01C7/04 A01C7/20 

FIELD: agriculture.

SUBSTANCE: agricultural machine relates to the field of sowing machines. The machine comprises at least one row unit comprising at least the seed metering device. The latter comprises a seed metering element (803) which by the drive device is made with the ability to transport the seeds to one or more metering drill tubes (812). The seed metering device also comprises a chamber (882) for seeds, made with the ability to supply to it of positive pressure from the pressurising element mounted on the agricultural machine. The seed metering element (803) is a wall limiting the chamber (882) which is provided with holes or recesses. At that the holes or recesses of the seed metering element (803) connect the chamber (882) with the environment to create the pressure difference to attach to them and transportation of seeds in them. The metering drill tube (812) comprises an outer drill tube (816) and an inner drill tube (826) located in it with the ability of dismounting, and has an inlet (814) in the chamber (882) for an air flow for transportation of seeds from the chamber (882) through the metering drill tube (812) to the seed furrow.

EFFECT: invention enables to provide improving the uniformity of sowing seeds of different sizes in the seed furrow at a high speed of the machine.

14 cl, 10 dwg