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Post Requirements
Post Requirements
Product information
Starch agent hollow paddle blade dryer
Working principle
The starch agent hollow paddle dryer is composed of two to four intermeshing paddle shafts, a W-shaped shell with a jacket, a base and a transmission part. The entire drying process of the material is carried out in a closed state. Organic volatile gases and odorous gases are sent to the tail gas treatment device in a closed atmosphere to avoid environmental pollution.
The dryer uses steam, hot water or heat transfer oil as the heating medium, and a rotary joint for the introduction and discharge of the heat medium is installed at the shaft end. The heating medium is divided into two paths, entering the jacket of the dryer shell and the inner cavity of the paddle shaft respectively, heating the body of the dryer and the paddle shaft simultaneously, and drying the material by conduction heating. The material to be dried is quantitatively and continuously fed into the feeding port of the dryer by the screw feeder. After entering the dryer, the material is flipped and stirred by the rotation of the paddles, constantly renewing the heating interface and coming into contact with the dryer body and paddles, being fully heated and causing the surface moisture contained in the material to evaporate. Meanwhile, the material is conveyed in a spiral trajectory towards the discharge port along with the rotation of the paddle shaft. During the conveying process, it continues to be stirred, allowing the water seeping out from the sludge to evaporate further. Finally, the uniformly dried and qualified products are discharged from the discharge port.
Equipment Characteristics
1. The equipment has a compact structure and occupies a small area. It can be known from the structure of the equipment that the heat required for drying is mainly provided by the hollow blade walls arranged on the hollow shaft, while the heat transfer from the jacket wall only accounts for a small part. Therefore, the heat transfer surface of the equipment per unit volume is large, which can save the floor space occupied by the equipment and reduce infrastructure investment.
2. High heat utilization rate. The sludge dryer adopts conductive heating for heating. All heat transfer surfaces are covered by materials, reducing heat loss. There is no hot air to carry away the heat, and the heat utilization rate can reach over 90%.
3. The wedge-shaped blades have self-cleaning capabilities and can enhance the heat transfer effect of the blades. The dispersion force generated by the combined movement of the inclined surface of the rotating blades and the particle or powder layer enables the sludge adhering to the heating inclined surface to be automatically removed, and the blades maintain an efficient heat transfer function. In addition, due to the reverse rotation of the two shaft blades and the alternating segmented compression (when the two shaft blade surfaces are closest to each other) and expansion (when the two shaft blade surfaces are farthest apart) stirring functions, the heat transfer is uniform and the heat transfer effect is improved.
Application scope
Food industry : Starch, cocoa beans, corn kernels, salt, modified starch, pharmaceuticals, etc.
Chemical industry : soda ash, nitrogen, phosphorus and potassium compound fertilizer, kaolin, bentonite, white carbon black, phosphogypsum, calcium sulfate, calcium nitrate, magnesium carbonate, sodium fluoride oxide, calcium carbonate, molecular sieves, dyes, saponins, etc.
Pharmaceutical industry : Suitable for materials that require solvent recovery during the drying process and need to be dried under low vacuum .
Environmental protection industry : Sludge drying, suitable for treating electroplating wastewater sludge, boiler soot, sugar factory waste residue, etc.
Feed industry : Soy sauce residue, bone-based feed, distiller's grains, food scraps, apple residue, orange peel, soybean meal, chicken bone feed, fish meal, etc. .
