In the center of the drum of the dryer to avoid increasing the broken bodies of the wet into the dry barrel drum wall material is repeatedly took a copy board, Paola, in the process of being broken up falling broken devices become small particles, over an area of ??substantial increase in full contact with the hot and dry. Widely used in alfalfa dry distillers dry, dry straw, wood chips and dried marigold dry, dry wood shavings, dried ginkgo leaves, dried herbs, dried brewer's grains, dried distillers grains, potato starch residue dried cassava residue dried malt dry, dry seeds, bagasse drying, dried hawthorn, rapeseed drying, drying vegetables, thermal efficiency up to 80%, significantly higher than similar devices. It consists of rotary body, lifting plate, gear, support equipment and seals and other components. Dryer is a direction slightly inclined to the horizontal cylinder, the material is added from a high end, high temperature and hot flue gas and the material flow into the cylinder, with the rotating cylinder, the material due to gravity to a lower run end. Contact surface mounted on the cylinder wall copy board, the material took another shed, so that the material and increases airflow to improve the drying rate and to promote material line before. The dried product collected from the bottom of the lower portion of the working principle of the heat source of the dryer drum from a combustion apparatus used downstream heating mode. Requiring drying material from the feed box, feed slide into the cylinder, he incurs the spiral copy board to the rear. Because dryer tilted, the material aspect of the backend flow under gravity and rotation effects, on the other hand the material to be copied repeatedly took the plate, and then continue to bring to the upper end of the Young Caesar down, so that the material in the barrel to form a uniform curtain curtain, full of hot air and heat exchange tube, due to the material repeatedly Young Caesar, moisture contained gradually drying, so as to achieve the purpose of drying. Rotary drum dryer, also known as drum dryer drying materials are widely used in cement, mining, building materials, chemicals, food, fertilizer production and other industries, in order to control the temperature of the dryer, the configuration on thermoelectric out equipment Even, the thermometer can be displayed by the discharge end of the dryer out of the temperature change, for better control of the cylinder body operating temperature (typically 350-380 degrees) was provided.