Rotary dryer machine is mainly composed of shell, back and forth supporting wheel, feeding and discharging unit and gear cap. The accessories which are not in the the scope of this machine include firebox, feeding and discharging equipment, dust catcher, etc.
working principle of rotary dryer:rotary dryer adopts direct flow type of heating with heat soure from firing unit. The material to be dried is pushed back immindiately by spiral board when enters the shell from feeding tank and feeding chute. Because the drier is installed in slope, material flows to the back end under gravity and rotation force, meanwhile, it is lifted by board repeatedly and thrown down accordingly, which make the material form. even curtain, and exchange heat sufficiently with inner the heat flow. In the end, water in the material is dried by repeatedly scattering.
Rotary dryer's advantages are as follows:The process of dryer is very advanced, which takes fast drying with high temperature, high heat transfer coefficient, high heat efficiency and large drying capacity. Air flow drying combines with the high speed agitation drying, which disperses the viscid material sufficiently and improves the contact area of material and thermal medium, thereby improves the process of drying It takes special scrapings device into the dryer so that avoid the material from sticking the wall. Wide application, easy operation, light maintainence work and stable quality.
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