| 摘要 |
FIELD: means of automation of production processes, applicable for metering of floatation reagents at concentrating mills at concentration of non-ferrous metal ores. ^ SUBSTANCE: the device has N channels of metering, each provided with an electromagnetic weigher and an amplifier, discrete signal input/output unit connected to a microprocessor device having a program providing formation of control signals shifted in time, connected to the respective inputs of each weigher channel. The device has two series-connected power sources, a current transmitter is connected at the output of one of them, it is connected to each metering channel, and the common potential of the power sources is connected to each metering channel. Each metering channel has a square signal shaper, two keys, maximum signal detector on semiconductor diodes, as well as a forcing signal transmitter and a reagent flow sensor. Since the forcing signal actuates in succession the weighers of the electromagnets in the metering channels, the presence of the forcing current in the current transmitter makes it possible to monitor the serviceability of the line of communication with the weigher by means of the input/output unit, and the forcing voltage transmitter in each channel makes it possible to selectively connect the outputs of the reagent flow sensors to the input/output unit and thus to monitor the weigher serviceability, and the program of the microprocessor device produces a base of data of functional failures of the metering channels, and takes stock of reagents of each channel with the use of the information of the data bases of failures of the metering channels. ^ EFFECT: enhanced accuracy of metering. ^ 3 dwg |
