Sludge Dryer Description: sludge dryer is the material heating and drying equipment. Coaxial sleeve column material by rotating barrel and interrupted helix spiral blade lifting plate folded in between the inner and outer barrel and lifting obtained during drying. Sleeve jacket column structure sludge dryer shorten the length can be doubled, due to a substantial reduction in cooling surface that reduces heat loss, while doubling the thermal efficiency of the heat exchange surface greatly improved. Materials that can not touch tobacco, multi-barrel sludge dryer are provided in the inner and outer cylinder and the inner ring of smoke pipe tobacco pipe, communication between the radial smoke flue pipe, the same energy-efficient. Not difficult to see, for the purposes of hot and cold media material, the machine becomes a sleeve-type rotary cooler. Sludge Dryer sludge dryer, coaxial tube sets from two to five columns, the radial bearing (7) and (25), and so integral to each other, stand in the idler group (16) and (17 ), and is connected to the body by gears or other driveline rotary motion to accept external to the body, the material (20) by the helical blade cylinder and intermittent lifting screw conveyor and raised, and the outer cylinder is connected by aggregate the lower end of the box (8) for feeding hot air (21) and both material (20) mixed with co-current contact, is discharged from the upper end of the collection tank (8), but also by the cylinder body within the smoking pipe (29), the annular smoke tube (31 Radial smoke tubes) and the outer hood (33) and communication among cigarette tube (30), (32) through the exhaust port (34) and discharge port, characterized by: (1) both inside and outside the cylinder (1), (2), (22) coaxial sleeve column, by the radial bearing (6) and (28) into one rack in the idler group (16) (17) and, (2) Each cylinder has a helical blades (5), (6) and (24) and the intermittent rotary lifting plate (3), (4) and (23), (3) the inner tube (1) in the hot smoke tube (29), each of the cylindrical between annular smoke tube (31), the outermost layer has an outer hood (33) and exhaust port (34) in (29), (31) and (33) radially between the smoke pipe (30) and (32) communication. http://www.zzdehong.com/product/2.html