Continuous heat-pipe roller vacuum drying machine

Abstract

The invention provides a continuous heat-pipe roller vacuum drying machine. The continuous heat-pipe roller vacuum drying machine comprises a circulating heat-pipe roller vacuum drying machine and high-airtightness discharging devices. The high-airtightness discharging devices are installed in a feeding inlet and a discharging outlet of the circulating heat-pipe roller vacuum drying machine. Materials can continuously enter a heat-pipe type roller and leave from the heat-pipe type roller, a certain degree of vacuum of the interior of the heat-pipe type roller is kept through pumping of a vacuum unit, the water evaporation boiling point is low, and therefore the heat energy needed by material drying can be greatly reduced. The heat energy is conducted and dissipated through an inner shell and heat-dissipating pipes of the heat-pipe type roller, and can directly carry out heat conduction and heat exchange on the materials, and therefore the effective utilization ratio of the heat energy is improved, the material drying efficiency is improved, and the purpose of rapid material drying is achieved. The heat-dissipating pipes and spiral blades have the function of material stirring, wet materials are not prone to caking in the drying process, no drying dead angles of the materials exist, and the drying quality of the materials is optimized, and energy-saving and emission-reducing environmentally-friendly drying is achieved.

Description

technical field [0001] The invention relates to a drum dryer, in particular to a continuous heat pipe drum vacuum dryer. Background technique [0002] Drum dryers currently on the market are suitable for drying large particles and large specific gravity materials in industries such as sawdust, distiller's grains, grain, rice husk, pasture, ore powder, coal slime, and coal powder. 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 less than 30%....

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 circulating heat pipe drum vacuum dryer can only dry in batches, but cannot continuously vacuum dry materials, so further improvement is needed

Images