三筒烘干机是近些年研发生产的新型干燥设备，由三个不同直径的同心圆筒按照一定的数学关系和结构形式，彼此相嵌组合而成的。三筒烘干机可适应煤、油、气等多种燃料，能烘干块状、粒状、粉状等多种物料，符合国家创建环境友好型、资源节约型社会的政策、是替代传统烘干设备的环保节能型产品。 三筒烘干机原理是根据热功原理，筒内装有不同角度和间距的扬料板和导料板，这种结构能够保证被烘干物料在重力作用下沿着螺旋的运动方向运动，在筒内保持足够的停留时间和充分的分散度，致使物料在筒内与来自燃烧室内的热气流进行充分的热交换，消除了常规烘干设备截面常出现风洞而引起的热交换面积小、单位容积蒸发强度低的缺陷。三筒烘干机整机由筒体、前辊圈、后辊圈、齿轮、挡辊、拖辊、小齿轮、出料部分、扬板、减速机、电机、热风道、进料溜槽、炉体等部分组成。如果用户需要还可以配置煤气发生炉、燃烧室或配套提升机、皮带输送机、定量给料机、旋风除尘器、引风机等辅助装置。 三筒烘干机械的特殊结构，筒体的长度是单筒
烘干机的三分之一，基础面积比单筒烘干机节约65%左右，基础投资相应降低。该烘干机采用托轮与轮带的摩擦传动，传动功率低，降低了设备工作时的噪音。密封系统采用了微接触技术，密封效果更佳，减少了粉尘污染。该机特有的三筒结构，使内筒和中筒被外筒包围而形成了一个自身保温系统，内、中筒体表面散发的热量参与到外一层筒内物料的热交换，而外筒又处在热气流的低温端，所以筒体的散热面积和热能损失明显降低。
The three-cylinder dryer for drying material with the special structure layer The three-cylinder dryer is a new kind of drying equipment, research and development production in recent years is made up of three different diameter of concentric cylinder according to certain mathematical relationship and structure, embedded in combination with each other. The three-cylinder dryer can adapt to a variety of fuels such as coal, oil, gas, can dry block, granular, powder and other materials, in line with the state to create environmentally friendly, economical society policy resources, are alternatives to traditional drying equipment of environmental protection and energy-saving products. The three-cylinder dryer principle is according to the principle of thermal power, cylinder is equipped with different angles and distance between feed plate and guide plate, the structure can guarantee by drying the material under the action of gravity along the movement direction of the spiral movement, in the interior of the cylinder in enough time and sufficient dispersion, the material inside the drum with sufficient heat flow from the combustion chamber of heat exchange, eliminates the conventional drying equipment section often appear wind tunnel and cause the heat exchange area
