Ultra-fine powder classifying device

Abstract

The invention discloses an ultra-fine powder classifying device. The ultra-fine powder classifying device is formed by connecting two or more scattering chambers in series through pipelines. Discharge valves are arranged at the bottoms of the scattering chambers. An outlet of the scattering chamber in the former stage is connected with an inlet of the scattering chamber in the later stage. A material/gas feeding port of the first scattering chamber is externally connected with a material/gas feeding pipe. The last scattering chamber is connected with a dust collector through a pipeline. A feeding hopper is arranged on the material/gas feeding pipe. An air inlet of the material/gas feeding pipe is connected with an air compressor. The ultra-fine powder classifying device is simple in structure, convenient to overhaul and maintain and high in classification accuracy and efficiency, and powder is fully scattered in the scattering chambers under the effect of compressed air; the device forms a closed space, the risks to human health are small, and the environmental pollution is low; collecting openings are formed in the lower ends of the scattering chambers, and the powder is conveniently collected and recycled; the scattering chambers and the pipelines are plastic parts, and no pollution is generated to the powder; and the collected powder can be directly used without being treated, and the production efficiency is effectively improved.

Description

technical field [0001] The invention relates to a classifying device for ultrafine powder, in particular to an airflow classifying device. Background technique [0002] Ultrafine powder is used in almost all industries of the national economy. It is the basis for transforming and promoting the development of emerging industries such as paint and coatings, information recording media, fine ceramics, electronic technology, new materials and biotechnology, and is the starting point of modern high-tech. [0003] However, due to the large specific surface area and surface energy of ultrafine powder, it is easy to agglomerate. Traditional airflow classification and sieving classification are difficult to achieve the purpose of classification, and the classification efficiency is low, the classification accuracy is poor, and it is easy to be polluted. Water flow classification can achieve the purpose of ultrafine powder classification to a certain extent, but there are many use res...

AI Technical Summary

Problems solved by technology

[0003] However, due to the large specific surface area and surface energy of ultrafine powder, it is easy to agglomerate. The traditional airflow classification and sieving classification are difficult to achieve the purpose of classification, and the classification efficiency is low, the classification accuracy is poor, and it is easy to be polluted, etc.

Water flow classification can achieve the purpose of ultrafine powder classification to a certain extent, but there are many use restrictions, and the powder after classification is easy to harden when dried, which is not conducive to later processing and use

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