A rakeless thickener with a rotary annular channel

Abstract

The invention relates to the field of slime water concentration and clarification, in particular to a rake-free thickener with rotary annular channels. The rake-free thickener at least comprises a thickener body, and further comprises rotary annular channels, wherein the rotary annular channels are used for constraining upper-layer ore pulp inside the thickener to do reciprocatory motion; the rotary annular channels consist of a plurality groups of annular channels of which the diameters are increased gradually; adjacent annular channels are mutually communicated through connecting channels; each group of the annular channels comprises an upper annular partitioning plate and a lower inclined settlement plate; overflowing ore pulp is discharged out from overflow weirs; the overflow weirs comprise annular overflow weirs and composite overflow weirs; settled granules are fed into a bottom flow discharge system; the bottom flow discharge system consist of bottom flow collecting cabins, bottom flow holes and corresponding bottom flow pumps; the rake-free thickener further comprises a feeding pipeline and a driving stirring mechanism; a stirring machine is driven by residual power of the feeding pipeline conveying the ore pulp to rotate so as to uniformly mix the ore pulp with medicines. The rake-free thickener has the characteristics of being low in energy consumption, low in repairing workload, low in medicine consumption and free of rake.

Description

technical field [0001] The invention relates to the field of concentration and clarification of coal slime water, in particular to a rakeless thickener with a rotary annular channel. 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 an underflow discharge system that collects sediment at the underflow outlet and discharges it. 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 pumped out from the bottom flow port at the cone bottom of the pool body . The traditional thickener, also known as the rake thickener, has a rake that concentrates and transports the sediment to the ce...

AI Technical Summary

Problems solved by technology

Existing concentrators have done a lot of research on the transmission device and body structure, but there are few innovations in the design of the overflow weir. In addition, how to ensure that the chemical and slime water are fully mixed and the degree of turbulence in the concentrator body is small, how to ensure The thickener works stably, preventing the rake frame of the thickener from being "pressed" by high-concentration materials has become a research hotspot in this field in recent years

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