Heat pipe type roller vacuum dryer

Abstract

The invention discloses a heat pipe type roller vacuum dryer. The heat pipe type roller vacuum dryer comprises a roller drying bin, roller paths, a gear ring, a three-way joint device, an elbow connector device, discharging devices, a vacuum unit, brackets, riding wheels and a driving device, wherein a heating device comprises heating pipes, a heat conduction pipe and fixing strips; the heating pipes comprise metal pipes, heat conduction working media and heating end sockets; the heating end sockets comprise heating plates, heat conduction working media and heaters; heat energy carried by themedia in the heat conduction pipes of the heating devices carries out heat conduction heating on the heating end sockets through pipe bodies of the heat conduction pipes; the heat dissipation areas ofheaters with heating strips of the heating end sockets are increased by 8-35 times; liquid heat conduction working media in the pipe inner cavities of the heating pipes are vaporized after being subjected to heat conduction heating by heat energy on the heaters of the heating end sockets; the heat conduction working media perform liquid-vapor phase change heat conduction heat exchange in the pipeinner cavities; and heat energy carried by the heat conduction working media is conducted to materials outside the metal pipes through the metal pipes for performing heat conduction heating, so thatthe heat conduction drying effect on the materials is improved.

Description

technical field [0001] The invention relates to a drum dryer, in particular to a heat pipe type drum vacuum 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 heating chamber needs to be installed outside the drying chamber. The heating tank conducts heat to the cylinder 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. 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 some drum dryers, the heat energy used when drying the material in the drum drying bin is heated by t...

AI Technical Summary

Problems solved by technology

The heat conduction area of ​​the heating plate at the lower end of the heating tube is limited, and the heating plate with a small heat exchange area only inputs a small amount of heat. The heat conduction working fluid affects the heat energy in the heat conduction tube to the inner cavity of the tube due to the limited heating area. The heat conduction heating of the heat-conducting working medium causes the total heat energy of the heat-conducting working medium to be insufficient, causing the heating tube to fail to output a large amount of heat energy, and the material cannot receive enough heat energy, which affects the drying efficiency of the drum drying chamber

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