DEVICE TO DRY AGRICULTURAL FODDER Russian patent published in 2011 - IPC A01F25/08 

FIELD: agriculture.

SUBSTANCE: invention is related to agriculture, namely, to methods of grassy fodders stocking. The device for drying of agricultural fodder comprises a ventilation frame connected to a fan, which has an injection nozzle equipped with a bleed having curvilinear grooves, a polymer coating of fodder, having a gap. A suction nozzle of the fan is located in the gap. The nozzle body is made of bimetal, and curvilinear grooves have profile in the form of dovetail and change into a circular groove arranged on the inner surface of the nozzle behind the input hole. In the lower part of the circular groove there is a dirt collector. The fan is equipped with a drive with a speed controller in the form of a unit of powder electromagnet couplings and a temperature controller with a temperature sensor. The temperature controller includes a comparison unit and a setting unit. The comparison unit is connected to an input of an electronic amplifier equipped with a unit of non-linear feedback. The output of the electronic amplifier is connected to the input of the magnetic amplifier with a rectifier, which at the input is connected to the speed controller in the form of a unit of powder electromagnetic couplings of the fan drive. The temperature sensor is located in the ventilation channel.

EFFECT: optimisation of power inputs with account of environment conditions variation.

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