Detection system and method for muddy water interface in thickener

Abstract

The invention relates to a detection system and method for a muddy water interface in a thickener, and belongs to the field of muddy water interface detection. The detection system comprises a pressure detection device, a cleaning device and a controller (3); the pressure detection device is composed of a ceramic pressure sensor (1) and a fixed polar plate (2), and the cleaning device is composedof a pipeline (3), a nozzle (4) and a water pump (5). The pressure detection device is longitudinally installed on the inner wall of the thickener, the cleaning device is installed beside the pressuredetection device in an attached mode, and the controller (6) is connected with the pressure detection device and the cleaning device. Longitudinal pressure distribution in the thickener is detected through the pressure sensor, pressure data changes are analyzed, and a mud-water interface in the thickener is judged. According to the invention, a mud-water interface of the thickener can be accurately and reliably detected in real time, and the method has important practical significance for pre-judging the sedimentation effect and automatically controlling the dosage of a flocculating agent.

Description

technical field [0001] The invention belongs to the field of mud-water interface detection, and in particular relates to a method for detecting the mud-water interface in a concentrator. Background technique [0002] Coal slime water is coal preparation wastewater, which is settled by a thickener to form a mud-water interface. Above the muddy water interface in the concentrator is the clear water layer, the concentration of the slime water is low, which can be recycled as clear water; below the muddy water interface is the subsidence area, where the concentration of the slime water is high, and the slime particles complete further settlement in this area; the higher the height of the clear water layer is , indicating that the better the slime water settlement effect is. The measurement of the mud-water interface of the slime water is an important parameter reflecting the sedimentation process of the slime water and the effect of the agent, and is an evaluation index for the...

AI Technical Summary

Problems solved by technology

In recent years, the photoelectric sensor used inside the concentrator has inaccurate detection due to the optical detection probe being covered by mud

The ultrasonic detection method calculates the height of the clear water layer by sending and receiving signals from the ultrasonic generator, but in the slime water system, the composition of the slime particle size is complex, and the slime water is in a forced rapid circulation system, and the particle settling time is short, which is very difficult. It is difficult to form a clear solid-liquid interface, resulting in large deviations in ultrasonic detection values ​​and large data fluctuations

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