转筒烘干机烘干机的种类及特点
根据烘干方式的不同，烘干机可以分为：流态烘干机，回转式烘干机和立式烘干机等。流态烘干机是将颗粒状的物料在热气流的吹动下呈流化床状态而进行热交换的。它是一种传热效率较高，传热速率较快的烘干设备。呈流化状态的物料，可以沿着篦板斜坡运动，从烘干机的喂料端流向出料端。它与沸腾烘干相比，物料尚未达到沸腾状态，因而具有功率消耗低，电耗少，飞扬损失小等优点。流态烘干机缺点是：在使用中除尘器布袋磨损较大，篦板使用寿命较短，烘干质量对操作的依赖性较大，要求熟练操作等。适用于烘干高水分和水分波动大的物料。
回转烘干机是应用时间较早，应用范围较广的一种烘干设备。它是一个回转圆筒，内部布置不同型式的热交换器，物料和热气体从圆筒内部通过并进行热交换，使物料得到烘干。它的特点是对物料的适应性较好，可以烘干多种水分、粒度(块状、粒状、粉状)、粘性不同的物料。这种设备结构简单，操作可靠；生产能力大，从每小时几吨到几十吨，在水泥工业上用的较多。缺点是烘干效率较低，设备机体较大，钢耗量较多，占地面积较大，投资较高。立式
烘干机是由外置式燃烧炉、主机本体和除尘设备组成，内部砌有耐火砖，腹腔有多组散料锥和滑料盆。其工作原理是物料由输送设备送入立式烘干机上部，靠自身重力通过散料锥、滑料盆下降、沉落。燃烧炉产生热能，通过立式烘干机与潮物料进行热交换后，经除尘设备排出。该设备的优点是占地面积小、投资少，缺点是：①初水分较高、物料粘性大造成上部几层滑料盆易堵塞；②因材质不当，造成下部实心滑料盆及滑料盆、滑料锥易损烧坏，③烘干质量难以控制。目前***常用的烘干设备是回转烘干机、立式烘干机，它们各有优缺点。为了开发一种适应性强、不易堵料，占地面积小，热效率较高的烘干设备。
The dryer information: double drum dryer types and characteristics of the dryer according to the different methods of drying, the dryer can be divided into: flow dryers, rotary dryer and vertical dryer, etc. Flow dryer is granular materials in fluidized bed state under the blows of the heat flow and heat transfer. It is a kind of high heat transfer efficiency, heat transfer rate and rapid drying equipment. A fluidized state materials, which can be along grate plate slope movement, from feeding end to discharging end of the dryer. It compared with boiling drying, the material has not yet reached boiling state, thus has low power consumption, less power consumption, small flying loss, etc. Flow dryers defect is: in the use of filter bag wear is larger, the service life of the grate plate is shorter, drying quality is bigger to the dependence of the operation, require skilled operation, etc. Suitable for drying high moisture and moisture fluctuations large material. Rotary dryer is used earlier time, has a wide range of application of a kind of drying equipment. It is a
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