三筒烘干机的三个筒体是其核心结构。最内层小筒通常直径较小，它的主要作用是接收物料并进行初步干燥。小筒的内壁设计有特殊的抄板，这些抄板会随着筒体的旋转而将物料不断地抄起和抛下，使得物料能够充分地与热空气接触。中间筒和外层大筒的直径依次增大，且它们与小筒之间有合理的间隙，保证热空气能够在筒体之间顺畅地流动。每个简体的长度也根据整体的干燥效率要求进行设计，一般来说，长度足够长以确保物料在筒体内有足够的停留时间进行干燥。筒体的材质选择至关重要。通常采用优质的耐热钢板制作，这种钢板能够承受高温环境，防止筒体在长时间的于燥过程中变形。而且，钢板的厚度也会根据简体的大小和工作压力等因素进行合理选择，以确保管体的强度和稳定性。

The three cylinders of a three cylinder dryer are its core structure. The innermost small cylinder usuallyhas a smaller diameter and its main function is to receive materials and perform preliminary drying. Theinner wall of the small cylinder is desiqned with special cutting plates, which will continuously pick upand throw down the material as the cylinder rotates, allowing the material to fully come into contact withhot air. The diameters of the middle cylinder and the outer large cylinder increase sequentially, and thereis a reasonable gap between them and the small cylinder to ensure smooth flow of hot air between thecylinders. The length of each cylinder is also designed according to the overall drying efficiencyrequirements. Generally speaking, the length is long enough to ensure that the material has sufficientresidence time in the cylinder for drying.The material selection of the cylinder is crucial. High quality heat-resistant steel plates are usually used forproduction, which can withstand high temperature environments and prevent deformation of thecylinder during long-term drying processes. Moreover, the thickness of the steel plate will be reasonablyselected based on factors such as the size of the cylinder and working pressure to ensure the strength andstability of the cylinder.