PNEUMATIC-MECHANICAL SEEDING UNIT Russian patent published in 2013 - IPC A01C7/04 

FIELD: agriculture.

SUBSTANCE: pneumatic-mechanical seeding unit comprises a hopper for seeds with a flap and a seed camera, a selecting-feeding device, an enlarging pipe with a valve and a frame with a roller. The roller interacts with the cam, and the frame is connected to the rod that has a working spring. A selecting-feeding device comprises a bar with a gripping element for seeds in the form of a spoon, and a guide plate with a groove to move the bar together with the frame. Additionally the selecting-feeding device is equipped with a bellows. The latter is made in the form of a hollow corrugated cylinder made of durable elastic material closed firmly and tightly with the lid from the top, rigidly connected by the rod. The lower part of the bellows is firmly fixed on the hollow cone for alternating creation inside it of the area of underpressure and high pressure. In the lower part of the cone there is an inlet with a valve, under which the guide plate of the selecting-feeding device is rigidly fixed.

EFFECT: invention provides a simple design with increased uniformity of the seeds distribution along the row.

2 dwg