FIELD: agricultural engineering.
SUBSTANCE: drill has main hopper with nozzle unit, from which hopper product is conveyed by means of compressed air to dispensing units equipped with dosing devices. Air pump is pneumatically communicated through a number of air ducts, with said number being equal to number of dispensing units, with side wall of nozzle unit, upstream thereof. Each dosing device is connected through product pipeline with side wall of nozzle unit, downstream thereof. Air ducts are connected to air inlet channels provided in nozzle unit of main hopper. Product outlet channels opposite air inlet channels are adapted for receiving of air flow and product contained in air flow. Product outlet channels are connected with product pipelines. Product pipelines are, on their turn, connected with auxiliary hoppers at dispensing units. Diaphragms between and above respective air inlet channels and product outlet channels of nozzle unit are adapted for accumulation of products under said diaphragms. Number of diaphragms corresponds to number of product dispensing units.
EFFECT: increased efficiency and reduced air pressure losses.
20 cl, 11 dwg
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