Automatic screening and balanced drying roller dryer

Abstract

The invention belongs to the technical field of roller dryers, and discloses an automatic screening and balanced drying roller dryer which comprises an obliquely-arranged screening and drying cylinder, a coarse material drying cylinder and a fine material drying cylinder. A first heat exchange pipe penetrates through the screening and drying cylinder; the screening and drying cylinder is composedof a filter cylinder and end cylinders welded to the two ends of the filter cylinder; the coarse material drying cylinder is obliquely arranged below the screening and drying cylinder; the inclinationdirection of the coarse material drying cylinder is opposite to the inclination direction of the screening and drying cylinder; a second heat exchange pipe is arranged in the coarse material drying cylinder; a bent pipe is rotatably connected between the upper end of the coarse material drying cylinder and the lower end of the screening and drying cylinder; and the fine material drying cylinder is coaxially arranged outside the screening and drying cylinder in a sleeving manner and corresponds to the filter cylinder. In conclusion, the screening and drying cylinder, the fine material drying cylinder and the coarse material drying cylinder which can rotate freely are arranged, so that coarse materials and fine materials in the materials are effectively distinguished and dried, and the problem that the drying degree of the coarse materials is insufficient or the fine materials are excessively dried when the materials are integrally dried is solved.

Description

technical field [0001] The invention belongs to the technical field of tumble dryers, and in particular relates to a tumble dryer for automatic screening and balanced drying. Background technique [0002] Drum dryer is one of the traditional drying equipment, widely used in metallurgy, building materials, chemical industry, coal washing, fertilizer, ore, sand, clay, kaolin, sugar and other fields. [0003] Existing tumble dryers mainly include an inclined drum. Specifically, during drying, materials enter from the top of the drum and are exported from the bottom, and the drying air enters from the top or bottom of the drum and is exported from the bottom or top, so as to In this way, the heat exchange between the material and the drying air flow is realized in the drum, so as to achieve the drying effect; at the same time, the drum rotates continuously to make the drying more uniform. However, in actual production and application, the materials to be dried often include lar...

AI Technical Summary

Problems solved by technology

[0005] If the drying temperature is low or the drying time is short, although the problem of material coking is avoided, the problem of incomplete drying of large particle materials exists

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