Conductive heating type drum dryer

Abstract

The invention discloses a conductive heating type drum dryer which comprises a drum drying bin, a roller path, a gear ring, a three-way joint device, an air seal machine, an exhaust device, a riding wheel and a driving device. The drum drying bin comprises a heat preservation bin and a drying bin. The drying bin comprises a drum, a metal mask, a heating pipe, a heat conducting pipe and spiral blades. The drum drying bin is driven by the driving device to rotate on the riding wheel. A circulation pump increases the flow speed of a heat conducting medium inside the metal mask and inside a guiding pipe, a heat conducting pipe and a heating pipe, the heat conduction speed is increased, heat conducting and heating of the heat conducting medium are performed inside the metal mask and the heatingpipe, the heating pipe of the rotating drying bin performs heat conduction on materials, due to the heating pipe with the high rotating crossed density, the material collision contact rate and the heat conducting area are increased, and the material heat conducting drying effect is improved. Low-temperature air entering the drying bin from an outlet of the drum drying bin can achieve the effect of cooling the dried high-temperature materials.

Description

technical field [0001] The invention relates to a drum dryer, in particular to a conduction heating drum dryer. Background technique [0002] Nowadays, in the processing and production fields of grain, food, chemical industry, medicine, agricultural by-products, pasture, etc., it is necessary to heat and dry the materials; the hot air used in the drum dryer is the hot air exchanged through the heat exchanger outside the equipment, or the drum A drying chamber needs to be installed outside the drying chamber, and the heating tank conducts heat to the chamber body of the drum drying chamber. The heat energy can only be used through secondary heat exchange. The heat exchange efficiency of heat energy is low, and the use of heat energy is one-time, and the heat energy can be used effectively. If the efficiency is low, the heat energy required for drying will increase a lot. [0003] In the drum dryers currently on the market, the medium in the heating tank or the heating tank c...

AI Technical Summary

Problems solved by technology

The heating tube 20 in the rotating process of the drying chamber 16 also rotates together simultaneously. Due to the pressure and resistance of the medium 27 in the heating chamber 26, the medium 27 in the middle 28 of the heating pipe 20 in the rotating process only relies on its own gravity. It can be completely input and discharged, so that part of the medium 27 in the middle 28 of the heating pipe 20 cannot be heated by heat exchange, and the low-temperature medium 27 in the middle 28 of the heating pipe 20 cannot provide heat to the materials in the drying chamber 16. conduction heating

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