Vacuum roller drying bin

Abstract

The invention discloses a vacuum roller drying bin composed of an outer shell and an inner shell. The outer shell is arranged outside the inner shell, and an inner cavity between the outer shell and the inner shell is internally provided with heat conduction media. A heat energy inlet and a heat energy outlet are formed in the outer shell, and a feeding port and a discharging port are formed in the two ends of the inner shell and extend out of the outer shell. Heat dissipation pipes and spiral blades are arranged in the inner shell, and the heat dissipation pipes are provided with fins. The high-heat heat conduction media obtained after heating of a heating device are subjected to three-dimensional heat dissipation heating through the inner shell and the heat dissipation pipes, the heat dissipation area of the inner shell and the heat dissipation pipes of the vacuum roller drying bin is increased by 8-30 times under the situation that drying bins are the same in space and size, heat energy can be directly used for heat conduction and exchange for materials, and the effective usage rate of the heat energy is increased; and the material drying efficiency is improved, and the purpose of rapid material drying is achieved. The heat dissipation pipes and the spiral blades have the function of material stirring, wet materials are not prone to caking in the drying process, no drying dead angle exists for the materials, and the material drying quality is optimized.

Description

technical field [0001] The invention relates to a drum of a drum dryer, in particular to a vacuum drum drying chamber applied to the drum dryer. Background technique [0002] Drum dryers currently on the market are suitable for drying large particles and large specific gravity materials such as ore powder, coal slime, coal powder, etc. in industries such as sawdust, slag, grain, and rice husk. The drum of the drum dryer on the market is made of single-layer metal, and the hot air used is formed by heat exchange on the outside of the drum. It is necessary to use the negative pressure suction of the induced draft fan to pump the dried material into the drum for convection drying. Dry to achieve the effect of material drying. Existing dryers generally use coal and firewood as the heat source, which has high thermal efficiency loss and high heat transmission costs. The use of hot air is one-time, the effective utilization rate of heat energy is low, and the heat utilization is ...

AI Technical Summary

Problems solved by technology

Existing dryers generally use coal and firewood as the heat source, which has high thermal efficiency loss and high heat transmission costs. The use of hot air is one-time, the effective utilization rate of heat energy is low, and the heat utilization is less than 30%. The drying of materials is uneven, which affects the quality of materials. drying quality

The heat pipe drum has complex heat pipe production and high production cost, so it needs to further improve the structural design of the heat pipe drum

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