Self-heating drum drying system

Abstract

The invention discloses a self-heating drum drying system. The self-heating drum drying system comprises a material conveying device, and at least one self-heating drum drying machine arranged along the material conveying device; the self-heating drum drying machines include drying drums, scrapers and liquid discs; the drying drums include outer cylinders; inner cylinders rotationally matched and coaxial with the outer cylinders are arranged in the outer cylinders; thermal insulation layers, electric heating layers and thin-wall heat conducting layers are arranged on the outer peripheral walls of the inner cylinders in sequence from inside to outside; heat conducting mediums are arranged in cavities between the outer cylinders and the inner cylinders; grooves for accommodating the heat conducting mediums are annularly and uniformly distributed in the outer peripheral walls of the thin-wall heat conducting layers; the bottoms of the outer cylinders are positioned in the liquid discs; edges of the scrapers are tightly bonded on the outer surfaces of the outer cylinders; and receiving plates leaded to the material conveying device are arranged below the scrapers. The self-heating drum drying system not only can satisfy the use requirements, but also can effectively improve the heat exchange efficiency.

Description

technical field [0001] The invention belongs to the technical field of drying equipment, in particular to a self-heating drum drying system. Background technique [0002] The drum drying device is a normal-pressure drying equipment that heats the liquid material or slurry attached to the outer wall of the cylinder by heat conduction to vaporize the water. When the drum rotates slowly, the material adheres to the outer surface of the drum in the form of a film, the water is vaporized and scattered in the surrounding air, and the dry material attached to the outer wall is scraped off by the scraper in the form of flakes and falls into the discharge port. Because the heat transfer method of the drum drying device is from the inside to the outside, it has the advantages of uniform material distribution, thin material layer, large temperature gradient and high heat utilization rate, and is widely used in chemical production. [0003] The existing drum heating device generally ad...

AI Technical Summary

Problems solved by technology

Although the heat-conducting oil-type drum drying device can meet the use requirements to a certain extent, it is difficult to discharge the low-temperature heat-conducting oil trapped between the outer cylinder and the inner cylinder in time, resulting in the temperature between the outer cylinder and the inner cylinder Uneven, the drying effect is not good, which is not conducive to energy saving and emission reduction

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