System and method for controlling rotating speed of rake of thickener in real time

Abstract

The invention belongs to the field of tailing water treatment, and specifically relates to a system and a method for controlling the rotating speed of a rake of a thickener in real time. The system comprises a flow meter, a concentration meter, a PLC (Programmable Logic Controller), an upper computer and a frequency converter, wherein the flow meter and the concentration meter are arranged on a feeding pipe of the thickener and are used for monitoring real-time flow data and real-time concentration data of ore pulp and transmitting signals to the PLC; the PLC is capable of calculating an appropriate rotating speed of the rake of the thickener according to a set thickener rake rotating speed control algorithm and displaying the appropriate rotating speed on the upper computer, and meanwhile, the PLC is used for transmitting a thickener rotating speed control signal to the frequency converter; the frequency converter is connected with a rotating motor of the rake of the thickener. The rotating speed of the rake is changed, real-time control on the rotating speed of the rake can be realized, a rake pressing accident can be effectively prevented, and the working efficiency of the thickener is iimproved.

Description

technical field [0001] The patent of the invention belongs to the field of tailings water treatment, and in particular relates to a real-time control system and method for the speed of a thickener rake. Background technique [0002] The thickener is a continuous working thickening and clarification equipment, mainly used for the concentration and clarification of tailings water in the mineral processing process. When the thickener is working, it generally adopts central feeding, and the slurry is sent into the receiving cylinder at the center of the thickener, and then flows into the settlement area. It mainly uses the principle of gravity settlement to settle the solid particles in the slurry to the bottom of the tank, the grit is discharged from the bottom outlet, and the clarified water is discharged from the overflow weir, so as to achieve the purpose of solid-liquid separation. [0003] Generally, the slurry is directly fed into the upper part of the thickener feeding ...

AI Technical Summary

Problems solved by technology

However, the current concentrator has a big problem because it cannot automatically control the speed, namely: when the rake speed of the thickener is high, the power consumption is high, and it will disturb the flow field; when the rake speed is low, the power consumption is low, but it cannot be timely Scrape away the sedimented material, the discharge is slow, resulting in a rake accident

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