Liquid and solid fluidized bed sorting machine for three products and working method thereof

Abstract

The invention relates to a liquid and solid fluidized bed sorting machine for three products and a working method thereof. The liquid and solid fluidized bed sorting machine for the three products comprises a top water distribution plate, wherein an inner sorting chamber and an outer sorting chamber are concentrically arranged on the top water distribution plate; the inner sorting chamber is higher than the outer sorting chamber; a material feeding pipe is arranged on an opening on the upper part of the inner sorting chamber; overflow grooves are formed on both openings of the upper parts of the inner sorting chamber and the outer sorting chamber; overflow outlets are formed at the bottoms of the two overflow grooves; a plurality of material discharging outlets are symmetrically formed on the lower parts, close to the top water distribution plate, of the inner sorting chamber and the outer sorting chamber; a concentric material discharging weir plate is also arranged between the inner sorting chamber and the outer sorting chamber, on the top water distribution plate; the material discharging weir plate is higher than the material discharging outlets on the lower parts of the inner sorting chamber and the outer sorting chamber; and an inner water supply chamber and an outer water supply chamber which correspond to the inner sorting chamber and the outer sorting chamber are concentrically arranged under the top water distribution plate, are sealed and are provided with water inlets. The liquid and solid fluidized bed sorting machine for the three products can be widely applied to highly precisely sort materials which contain relatively many mediate-density materials and are difficult to sort.

Description

technical field [0001] The invention relates to a sorting machine and its working method, in particular to a liquid-solid fluidized bed sorting machine and its working method used in the field of coal preparation to separate fine particle groups to obtain three products. Background technique [0002] The traditional liquid-solid fluidized bed sorter is a square or circular tank. Water flows upward from the bottom into the barrel, and materials are fed from the upper center of the barrel. After the sorted materials enter the barrel, due to the particles themselves Different particle sizes and densities have different interference settling velocities, and the material group whose settling velocity is close to the rising water velocity forms a relatively stable interference layer in the lower part of the barrel, causing the fine particles in the disturbing bed whose settling velocity is lower than the rising water velocity to overflow from the upper part out, while coarse and h...

AI Technical Summary

Problems solved by technology

Since the concentration of the overflow product in the first stage is generally low, if it is re-sorted, the sorting ability will be reduced, so the first method is generally not used.

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