Working principle of sludge dryer

Wedge-shaped hollow blades are densely arranged on the hollow shaft, and the heat medium flows through the blades through the hollow shaft. The heat transfer area in the unit effective volume is large, indirect conduction heating, no air is carried to take away the heat, and the heat is used to heat the material. The heat loss is only the heat dissipation to the environment through the insulation layer of the body. The wedge-shaped blade heat transfer surface has a self-cleaning function. The relative movement of the material particles and the wedge-shaped surface produces a scrubbing effect, which can wash off the attached material on the wedge-shaped surface, so that a clean heat transfer surface is maintained during operation. The shell of the blade dryer is Ω type, and two to four hollow stirring shafts are generally arranged in the shell. The shell has a sealed end cover and upper cover to prevent material dust from leaking out and collect material solvent vapor. A stop plate is set at the discharge port to ensure the height of the material level, so that the heat transfer surface is covered by the material to fully play its role. The heat transfer medium flows through the shell jacket and the hollow stirring shaft through the rotary joint. The hollow stirring shaft has different internal structures according to the type of heat medium to ensure the best heat transfer effect.https://www.stordworkshop.com/