PNEUMATIC FERTILIZER DRILL Russian patent published in 2000 - IPC

FIELD: agriculture, in particular, mineral fertilizer applying machines. SUBSTANCE: pneumatic drill has frame with carrier wheels, fertilizer hopper, fluted wheel seeding units, air blower with drive reducer, transfer system, ejectors and air pipeline. Drill is further equipped with tubular shanks, calculation and control unit, seeding unit speed sensor and sensor for detecting rotational speed of seeding unit wheel shaft. Hydraulic engine of seeding unit drive wheel is connected to tractor hydraulic system via electrically connected throttle-regulator. Electric signal outputs of all sensors are connected to related inputs of calculation and control unit, whose output is connected to input of electrically connected throttle-regulator. EFFECT: wider operational capabilities and improved distribution of mineral fertilizer. 1 dwg