A high-efficiency thickener with the function of self-cleaning and anti-pressure rake

Abstract

The invention relates to the field of coal slime water concentration and clarification, in particular to an efficient concentrator with self-cleaning and rake pressing prevention functions.The efficient concentrator at least comprises a concentrator body, a diffuser, a high-pressure dredging pipeline, base flow openings and hydraulic rake lifting devices.The diffuser and the high-pressure dredging pipeline are used for cleaning material layers in the concentrator, the base flow openings are used for draining base flow in the concentrator, and the hydraulic rake lifting devices are used for lifting up a rake frame; the base flow openings include a central base flow opening and side edge base flow openings, the central base flow opening is formed in the center of a circular ring at the bottom of the concentrator, and the side edge base flow openings are formed in a circular ring of the central base flow opening in the perpendicular direction and the horizontal direction.The efficient concentrator has the advantages that materials can be discharged by the aid of the hydraulic rake lifting devices, the high-pressure dredging pipeline and the multiple base flow openings, accordingly, stable concentration of the material layers in the concentrator can be guaranteed, the rake frame can work smoothly, and 'rake pressing' phenomena can be completely eradicated; the efficient concentrator further comprises a driving stirring mechanism and composite overflow weirs, accordingly, ore pulp and chemicals can be uniformly mixed with one another, upper-layer clarified liquid can be timely drained, and the efficient concentrator is low in energy consumption, maintenance and chemical consumption.

Description

technical field [0001] The invention relates to the field of concentration and clarification of coal slime water, in particular to a high-efficiency thickener with the function of self-cleaning and anti-pressure raking. Background technique [0002] The thickener is a device that uses the flocculation and sedimentation of solid particles in the slime water to complete the continuous concentration of the slime water. Its essence is composed of a pool for sludge water sedimentation and a transport rake that collects the sediment to the discharge outlet. Its production process is continuous, the slime water is fed from the upper middle of the pool body, the clarified overflow water flows into the overflow tank from the periphery of the pool body, and the settled product (bottom flow) is used from the discharge port at the center of the cone bottom of the pool body. Pump out. At the same time, in the process of transporting the rake to enrich the sediment along the bottom of t...

AI Technical Summary

Problems solved by technology

In recent years, the research hotspot of thickeners is how to ensure the stable operation of the thickener rake and avoid the thickener rake from being "pressed" by high-concentration materials? How to ensure that the agent and the slime water are fully mixed evenly and the degree of turbulence in the thickener body is small? In addition, the research on the overflow weir of the concentrator is still insufficient

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