Internal heating three-cylinder vacuum drying cabin

Abstract

The invention discloses an internal heating three-cylinder vacuum drying cabin. The vacuum drying cabin includes a three-cylinder drying cabin, a feeding device, a discharging device, a plate-type heating device, gear rings and raceways; the three-cylinder drying cabin includes an outer drying cylinder, a middle drying cylinder, an inner drying cylinder and spiral blades; the plate-type heating device includes heat conduction hollow boards and a heat conduction pipe; the plate-type heating device is installed in the three-cylinder drying cabin; and the heat conduction and heat dissipation of heat energy carried by heat-conducting media can be performed through the plate-type heating device. The internals of the heat conduction hollow boards do not communicate with the internals of the adjacent heat conduction hollow boards, so that the using of the whole three-cylinder drying cabin cannot be affected when some heat conduction hollow board is damaged to cause leakage; an air exhaust opening exhausts moisture out of the three-cylinder drying cabin, and the plate-type heating device performs stirring and pushing on materials during drying, so that the drying uniformity of the materials can be enhanced; and the materials can be continuously taken in and out of the three-cylinder drying cabin through the feeding device and the discharging device, so that continuous vacuum drying canbe performed on the materials.

Description

technical field [0001] The invention relates to a three-tube drying bin, in particular to a three-tube vacuum drying bin with internal heating. Background technique [0002] Now on the market, there are drying equipment for materials such as grain, chemical products, coal, gravel, sand, mineral products, pasture, crops, and local specialties. Most of the equipment in the three-barrel drying warehouse on the market now uses external heat exchange for hot air. The heat exchange efficiency is low, the use of heat energy for hot air convection drying is one-time, and the heat energy required for drying increases a lot, which affects the uneven drying moisture of materials. [0003] Heat pipe technology is a heat transfer element called "heat pipe" invented by G.M.Grover of Los Alamos National Laboratory in the United States in 1963. It makes full use of the principle of heat conduction and the rapid heat transfer properties of heat-conducting working fluids. The liquid-gas phas...

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Problems solved by technology

[0002] Now on the market, there are drying equipment for materials such as grain, chemical products, coal, gravel, sand, mineral products, pasture, crops, and local specialties. Most of the equipment in the three-barrel drying warehouse on the market now uses external heat exchange for hot air. The heat exchange efficiency is low, the use of heat energy for hot air convection drying is one-time, and the heat energy required for drying will increase a lot, which will affect the uneven drying moisture of materials.

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