Drum Vacuum Dryer

Abstract

The invention discloses a drum-type vacuum drier. The drum-type vacuum drier is composed of a heating and heat exchanging device, a rear support, a vacuum unit, a heating device, a driving device, a gas-guide tube, a raceway, a front support, an underpan, carriage wheels, a conduit and riding wheels. The drum-type vacuum drier can be fixed to a drying operation site and can also be moved to a plurality of different sites. An outer shell is fixed to the front support and the rear support and can not move. The driving device is in power connection with a conduction shaft of an inner bin. An air outlet formed in a sealing cap is connected to the vacuum unit through the gas-guide tube. Heat exchanging of the heating and heat exchanging device is three-dimensional inner-wall heat exchanging, and the heat exchanging area is increased by 12-60 times. Heat conduction and heat dissipation of a high-temperature heat conducting working medium are conducted through a bin body of the inner bin and heat dissipation stand pipes. The speed of heat conduction and heat dissipation of heat energy is increased. The drying efficiency of materials is improved. The purpose of rapid drying of the materials is achieved. The heat dissipation stand pipes and screw blades have a material stirring function, so that wet materials are not liable to be agglomerated in the drying and stoving process, and the quality of drying and stoving of the materials is optimized.

Description

technical field [0001] The invention relates to a dryer, in particular to a drum type vacuum dryer. Background technique [0002] The vacuum drying equipment used for drying materials such as grain, chemical products, coal, gravel, sand, and mineral products on the market can dry materials under vacuum at low temperature in a vacuum state, which solves the problem of high hot air temperature and poor quality after drying; The heating of vacuum drying is based on the heat dissipation of the single-layer plane of the inner wall of the interlayer. The heat dissipation area is small, the contact surface of the material is smaller, and the efficiency of heat energy use is low; the heat energy required for drying increases a lot, and the waste heat cannot be used. Wet materials often form agglomerates under vacuum, which causes uneven drying of materials and affects the drying quality of materials. [0003] I applied for a patented heating and heat exchange device. The heating an...

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Problems solved by technology

[0004] The problem to be solved by the present invention is to overcome the deficiencies in the prior art, make further improvements on the basis of the patent "Vacuum Dryer for Granular Materials" that I applied for, and provide a drum-type vacuum dryer whose three-dimensional heat transfer increases The heat exchange area is enlarged, the speed of heat conduction and heat dissipation is accelerated, the effective utilization rate of heat energy is improved, wet materials are not easy to agglomerate, and the quality of material drying is optimized

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