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Material level and cooling effect of textile dryer
Feb 26, 2019

The textile dryer can indirectly heat or cool the paste, granule, powder, and slurry materials during operation, and can perform unit operations such as drying, cooling, heating, sterilization, reaction, and low-temperature calcination. The special wedge-type agitating heat transfer paddle in the equipment has high heat transfer efficiency and self-cleaning function of the heat transfer surface. A wedge-shaped hollow blade is densely arranged on the hollow shaft, and the heat medium or the cooling medium flows through the blade through the hollow shaft. The heat transfer area in the effective volume per unit is large, and the temperature of the heat medium is from -40 ° C to 320 ° C, which may be water vapor or liquid.

 

The indirect conduction heating of the textile dryer does not carry air to carry away heat during the operation, 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 surface produces a scrubbing action, which can wash away the adhering material on the wedge surface, so that a clean heat transfer surface is maintained during operation.

 

Two to four hollow agitator shafts are generally arranged in the housing of the textile dryer. The housing has a sealed end cap and an upper cover to prevent material dust from leaking and collecting material solvent vapor. A baffle is arranged at the discharge port to ensure the height of the material level, so that the heat transfer surface is covered by the material and fully functions. The heat transfer medium passes through the rotary joint and flows through the casing jacket and the hollow agitating shaft. The hollow agitating shaft has different internal structures according to the type of the heat medium to ensure the heat transfer effect.

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