FIELD: agricultural engineering, particularly mechanisms of self-propelled field grinder. SUBSTANCE: machine comprises an engine, a radiator and a fan. The latter is equipped with a rotary netted device intended to protect it and other parts from clogging with trash contained in sucked-in air. This trash is constantly sucked out through a drawout device. Air flow required for drawing out is created by an additional accelerator so that particles of dirt are thrown out together with crushed harvested product. EFFECT: improved design. 2 cl, 2 dwg
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