Filtering equipment of solid-particle aqueous dispersion and filtering method with filtering equipment of solid-particle aqueous dispersion used

Abstract

The invention relates to filtering equipment of a solid-particle aqueous dispersion and a filtering method with the filtering equipment of the solid-particle aqueous dispersion used. The equipment comprises a tank, a filtering unit and an oscillating unit, wherein the tank comprises a top cover, a bottom cover and side walls located between the bottom cover and the top cover, a feeding pipe, a discharging pipe, an air compressor, a pressure gauge and a liquid level gauge are arranged on the tank, the filtering unit and the oscillating unit are located in the tank, the oscillating unit is located under the filtering unit, flow-guiding boards are arranged on the portions, between the filtering unit and the oscillating unit, in the tank, and the flow-guiding boards are used for guiding the aqueous dispersion filtered out by the filtering unit towards the interior of the oscillating unit. The filtering equipment breaks the large-particle aqueous dispersion by means of stirring and grinding, and then impurities in the solid-particle aqueous dispersion are removed by adopting filtering ring filtration and oscillating filtration. The filtering equipment of the solid-particle aqueous dispersion and the filtering method with the filtering equipment of the solid-particle aqueous dispersion used have the advantages that the structure is simple, operation is simple and convenient, continuous production is feasible, the filtering efficiency is high, cleaning is easy, and the like.

Description

technical field [0001] The invention relates to filtering equipment, in particular to a filtering equipment and a filtering method for a solid particle aqueous dispersion, and is particularly suitable for filtering out large particle substances in the solid particle aqueous dispersion. Background technique [0002] In the production process of water-based dispersion of solid particles such as water-based color paste and coal-water slurry, it is often produced according to the processes of feeding, dispersing, grinding, testing, and packaging. Impurities in raw materials, raw materials that are not fully dispersed, etc. It can enter semi-finished products and finished products through various channels. In order to further remove large particles and improve the fluidity of aqueous dispersions, it is usually necessary to filter the product during the production process. Generally, when the filtration quality of water-based dispersions is not high, you can choose a single-layer ...

AI Technical Summary

Problems solved by technology

The device can collect filter residues, but the filter residue box is inside the device and needs to be taken out and collected regularly, otherwise the filter residue box will be blocked and affect the filtration efficiency

The filter equipment disclosed in the above prior art has difficulty in meeting the requirements of industrial production in terms of filtration efficiency.

[0004] The Korean patent with the publication number KR101622368 introduces a water treatment device with filtering and backwashing functions, which can effectively clean the filter device without disassembling the filter housing, and the German patent with the publication number DE3905113 introduces a cleaning The method on the surface of the filter uses a slidable spray rod to clean the filter plate with compressed air. Although the filter equipment introduced by these two patents has an automatic cleaning function, the equipment disclosed by these two patents is effective in filtering color paste, water, etc. In the process of water-based dispersions with high large particle content such as coal slurry, it is often difficult to work continuously because of the high cleaning frequency, and the equipment is too complicated, which puts a lot of pressure on the maintenance of the equipment

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