Vacuum tube bundle drying machine

Abstract

The invention relates to a vacuum tube bundle drying machine. A feed port is formed in one side of the tube bundle drying machine, and a discharge port is formed in the other side; a waste steam outlet is formed in a shell of the tube bundle drying machine; rotating shafts at two ends of a tube bundle of the tube bundle drying machine are movably connected with the shell through mechanical seals; one ends of the rotating shafts are connected with transmission devices; the rotating shafts are hollow shafts, and inner cavities thereof are communicated with the tube bundle of the tube bundle drying machine; the rotating shaft on one side of the discharge port of the tube bundle drying machine is communicated with a steam intake device; the rotating shaft on one side of the feed port of the tube bundle drying machine is communicated with a condensed water drainage device; the feed port of the tube bundle drying machine is communicated with a feeding device; the discharge port of the tube bundle drying machine is communicated with a discharge device; and a waste steam outlet of the tube bundle drying machine is communicated with a waste steam treatment device. The vacuum tube bundle drying machine is simple in structure, convenient for use, low in manufacturing cost and wide in application range, can preferably reduce the steam temperature needed by material drying, reduces the energy consumption, reduces the waste steam emission, and achieves the purposes of energy conservation and emission reduction.

Description

Technical field: [0001] The invention belongs to the technical field of drying equipment for loose materials such as powders and granules, and in particular relates to a vacuum tube bundle dryer. Background technique: [0002] Tube bundle dryer is an indirect heating contact dryer, which is widely used in the drying of loose materials in chemical industry, light industry, food, grain and feed industries, such as powdery, granular and sheet-like materials without too much viscosity . The tube bundle dryer is driven by the motor and reducer to rotate the tube bundle. The material enters the dryer from the feed inlet through the feed auger. At one end of the discharge port, the material is picked up to the top by the lifting board and then falls into the tube bundle under the action of gravity. [0003] The high-temperature steam enters the tube bundle tube from the rotary joint at the discharge end of the tube bundle dryer, flows along the inside of the tube bundle tube to...

AI Technical Summary

Problems solved by technology

[0004]However, the existing tube bundle dryers dry wet materials under normal pressure, and the heat source used by the existing tube bundle dryers is high-temperature raw steam, which is Drying materials are often scorched due to excessive temperature, resulting in a decline in the quality of the dried materials. The waste steam generated by drying wet materials contains burnt odor, which is directly discharged into the atmosphere, causing air pollution. High-temperature drying consumes a lot of energy. And it is not suitable for drying materials such as seeds

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