A feeding device for a thickener

Abstract

The invention discloses a feeding device of a thickener. The feeding device comprises a feeding drum, wherein the feeding drum is divided into a mixing area at the upper part and a dispersing area at the lower part, and the mixing area is divided into two rotational-flow areas; a chute formed by an outer ring plate, an inner ring plate and a spiral bottom plate forms the first rotational-flow area, and a feeding pipe is tangentially inserted into the outer ring plate to the first rotational-flow area; the second rotational-flow area is formed by the inner ring plate and the bottom plate, the spiral bottom plate descends spirally, and the lower end of the spiral bottom plate is connected with the bottom plate; a plurality of radial flow-guiding turbulent-flow cones and dosing nozzles are distributed on the circumference, close to the inner side of the inner ring plate, of the second rotational-flow area; and the dispersing area is provided with two stages of longitudinal turbulent-flow dispersing ring plates and a flow-stabilizing bottom plate. A dispersing cone is arranged at the bottom end of the dispersing area, and a gap between the dispersing cone and the drum wall of the dispersing area is adjustable. The feeding device disclosed by the invention has the advantages that the spatially uniform mixing of fed slurry, the effective mixing of the slurry and a flocculating agent and the fast and high-efficiency dispersion can be realized, and finally the mixing and dispersing performances of the thickener in the feeding process are improved.

Description

technical field [0001] The invention relates to a thickener, in particular to a feeding device for the thickener. Background technique [0002] Thickeners are mainly used in mining, water treatment, environmental protection and other fields to concentrate low-concentration materials to a certain concentration and obtain recyclable clarified water at the same time. Modern high-efficiency thickeners mainly promote the rapid sedimentation and concentration of materials by adding flocculants, while the feeding device in the thickener plays the role of mixing flocculants and dispersing pulp, which is considered to be the key technology of thickeners. The conventional feeding device is a cylinder extending into the middle and lower part of the thickener, and the ore slurry is fed into the cylinder radially, and flows into the dense phase layer of the thickener without order. Although the structure of this feeding device is simple, the mixing efficiency is low, and it cannot be ad...

AI Technical Summary

Problems solved by technology

The above existing technologies have ignored the delamination phenomenon caused by the action of centrifugal force on large and small particles during the slurry swirling process, and all belong to the two-dimensional mixing on the cross section or longitudinal section, and the spatial mixing ability is poor.

At the same time, the existing feeding device technology does not provide effective solutions for flocculant addition and mixing, so its overall mixing efficiency is low

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