JPS61135550U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a conventional ball mill control device, and FIG. 2 is a block diagram showing an embodiment of this invention. In the drawing, 1 and 2 are hoppers, 3 and 4 are raw material quantitative feeders, 5 is a ball mill, 6 is a bucket elevator, 7 is an air separator, 8 is a power detector, 9 is a power controller, 10 and 11 are Ratio setter, 12,1
3 is a cutting amount controller, 14 and 15 are weighing detectors, 1
6 is an adder, 17 is a subtracter, 18 is an integrator, 19
2 is a raw material controller, and 20 is a return amount detector. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) Output signals of weighing detectors installed in each quantitative feeder that supplies raw materials into a ball mill;
An adder that adds the output signal of the return amount detector that returns part of the raw material from the air separator into the ball mill, and an integrator that subtracts the output signal of the power detector of the bucket elevator from the output signal of this adder. and a raw material controller that generates an output signal that controls the quantitative feeder so that the output signal of the integrator becomes a predetermined set value. Device. (2) The control device for a ball mill according to claim 1 of the utility model registration, characterized in that a ratio setting device and a cut-out amount controller are provided between the raw material controller and the quantitative feeder.