| 摘要 |
PURPOSE:To fix the supply temperature to an extruding machine of granular materials by controlling the temperature of a heater with the detection output of the exit temperature of a hot blast generator and controlling the number of revolutions of a blower with the detection output of the heat discharge temperature of a hopper. CONSTITUTION:The exit temperature of a hot blast generator 14 is measured by a hot blast temperature detector 3, and this detected temperature is inputted to a temperature controller 5, and the output signal of this controller 5 is inputted to a power adjustment controller 7. The controller 7 adjusts the supply power to an air heater 2. Meanwhile, the temperature of a heat discharge exit 12 of a hopper 9 is measured by a heat discharge temperature detector 4, and the output of this detected temperature is inputted to a temperature controller 6, and the output of the controller 6 is inputted to a controller 8 for the number of revolutions. The controller 8 outputs a control signal matched to the temperature set to the controller 6 to control the number of revolutions of a blower 1. Thus, the preheating temperature of granular materials 11 is always kept at a certain proper temperature if the quantity of blast of the blower 1 is controlled.
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