On-line detection device for thickness of clear water layer in concentration tank

Abstract

The invention discloses an online detection device of the clear water layer thickness of a concentration tank, and aims at solving the problems of lag control and poor precision of the existing device. The online detection device is characterized by comprising a detection rod, a pressure sensor, a guide base, a supporting base, a lifting device, a displacement sensor, a programmable logic controller (PLC) control box, an upper travel switch and a lower travel switch, wherein the supporting base and the guide base are arranged on the bridge frame of a concentrator; the lifting device and the upper travel switch are arranged on the supporting base, and the lower travel switch is arranged on the guide base; the displacement sensor is fixed on the side face of the lifting device, and the lower side is connected with the detection rod; the pressure sensor is arranged in the inner cavity of the detection rod, and a probe stretches out and contacts with the level; and a limiting plate is arranged on the detection rod, and the upper plane of the limiting plate is constantly contacted with the contact of the displacement sensor. According to the online detection device of the clear water layer thickness of the concentration tank, by the combination of the pressure sensor and the displacement senor, and by an automatic conversion system and the guide device which move up and down, the thickness of the clear water layer in the concentration tank can be automatically detected in real time, so that the automatic control of the concentration process is achieved, and the labor intensity of the operator is reduced.

Description

technical field [0001] The invention relates to an on-line detection device, more precisely an on-line detection device for detecting the thickness of a clear water layer in a concentration tank. Background technique [0002] The concentration of ore slurry is a gravity settlement process. The ore slurry enters the concentration tank to concentrate, and the water is discharged through the overflow weir; the mud is deposited on the bottom of the tank and discharged through the mud discharge port. During the gravity settling process, five areas are formed in the concentration tank: clear water area, turbulent flow area, sedimentation area, compaction area and mud area. Each zone in the concentration tank is in dynamic equilibrium. When the sedimentation conditions change, the conditions of each zone change accordingly, and the concentration effect also changes accordingly. In production practice, people control the concentration effect by detecting and controlling the thickne...

AI Technical Summary

Problems solved by technology

This method has control lag, poor precision, high labor intensity, and poor safety. It cannot meet the needs of modern industrial production and seriously restricts the development of automatic control technology for the concentration process.

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