Granule screening equipment

Abstract

The invention relates to granule screening equipment. The granule screening equipment comprises a frame, a grading machine, a feeding device, a protecting device, a guiding device and a collecting device, wherein the grading machine comprises a housing, two block objects and six graded adjustment cutting edges; the feeding device comprises a vibrating device, a feeding pipe and a feeding funnel; the protecting device comprises a frame body and a porous ceramic film which is arranged in the frame body; the guiding device comprises a coarse powder guide tube, a fine powder guide tube, a middle powder guide tube, an ultra-fine powder guide tube, a submicron powder guide tube and a micropowder guide tube; the collecting device comprises an air compressor, a main gas flow pipeline, six branch gas flow pipelines, six speed governing valves and six dust collectors. The granule screening equipment solves the problem that an impurity-containing ultra-fine powder jet flow is hard to purify and grade and the grading granularity is hard to control, and has the technical effects that a raw material is few in residue in a feeding barrel, the jet flow is relatively high in grading efficiency, dust granules are unlikely to drift away to air and the like.

Description

technical field [0001] The invention relates to the technical field of particle classification, in particular to a particle screening device. Background technique [0002] The jet classifier is mainly used for the classification of fine particles, which was proposed by Professor RUMPFHANS of Germany as early as 1975, (see patent Nos. DE19752538190, 19750827; and US4153541); ) and is commercially sold by NittetsuKogyo; in addition Okuda, S. and Yasukuni, J. The classifier disclosed in Proc.OfInternational Symposium on Powder Technology 81, 771 (1981) also belongs to the category of jet classifiers. Jet classifiers have been well applied in the field of toner manufacturing, and combined with the manufacturing characteristics of toner, some modified jet classifiers have emerged. [0003] However, due to the unreasonable structural design of the feed barrel in the existing jet classifier, the raw materials are often piled up on the feed barrel after being fed into the feed barr...

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to provide a particle screening equipment for technical problems such as residual raw materials in the feeding barrel, low jet classification efficiency, and dust particles easily floating into the air.

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