- Feeding System
Feeding system is composed by a material temporary storage tank with buffer function and a spiral conveyor with variable speed. The buffer tank is provided with an agitator which prevents materials blocking in the tank. Different types of spirals designs are available for different feed materials. The variable speed spiral conveyor controls quantity of the materials that entering the drying chamber. Highly viscous liquid materials are pumped into the drying chamber.
- Drying Chamber
The drying chamber is the key equipment of the spin drying system. With rotating of the rotor at bottom of the drying chamber, materials in the chamber are disintegrated quickly. Hot air supplied by air heater is sent by a speed controlled fan into drying chamber base along tangent line, thus a whirling heat air flow forms. The heat air completely contacts and exchanges heat with the disintegrated materials, and then forms a fluidization zone at the top of the chamber. The whirling heat flow brings materials go up. Dried materials pass through a classifier at the top of the drying chamber into bag filter, while larger and undried materials remain in the chamber for further drying. During the drying process, discharge materials’ particle size can be controlled by the hot air flow that entering the drying chamber.
The drying chamber is rigidly designed to withstand pressure shock in the event of a dust explosion of flammable particles.
- Bag Filter
Dried powder from the drying chamber is conveyed to a bag filter for separation from the drying air. The hot air flow passes out at the top via an exhaust fan then enters air heat exchanger.
- Cyclone Separator
Powders separated by bag filter are with high temperature. By pneumatic conveying, the powders are conveyed to cyclone separator. The air in pneumatic conveying is clean air, and the power of the conveying is supplied by a speed controlled fan. Accepted products are outputted after the powder temperature cooling down to specific temperature in the cyclone separator. The air in pneumatic conveying passes through the top of cyclone separator into bag filter. The bag filter can filter the remained powder in airflow, so that the powder recovery rate is improved.
The products temperature from cyclone filter can be controlled by adjusting the speed of the pneumatic conveying fan.
- Air Heat Exchanger
Air heat exchanger is the key energy saving and cost reducing equipment of the drying system. By air heat exchanger, the hot air from bag filter can preheat the clean air that entering the heater. Thus, energy saving and cost reducing are realized. Temperature of the exhaust gas that discharged from bag filter is cooled down by air heat exchanger. Thus, exhaust emission becomes environmental.
- Heater
Heater heats clean air in indirect heating way to ensure the cleanness of the air that entering the drying chamber so that the product quality is guaranteed.
The heated clean air via heater can reach 150℃-700℃. Specific temperature is different according to different materials.
- Pharmacy
Aminopyrine, Albumen powder, Nucleotide, vernine and so on.
- Foods
Soy protein, gelatinized starch, distillers’ grains, triticin, wheat starch and so on.
- Inorganic Substance
Boric acid, calcium carbonate, hydroxide, copper sulfate, ferric oxide, barium carbonate, antimony trioxide, various metal hydroxides, heavy metallic salt, compound cryolite and so on.
- Organic Substance
Atrazine(pesticide), lauric acid, benzoic acid, benzoic acid, sterilization pill, sodium oxalate, cellulose acetate fiber and so on.
- Ceramics
Kaolin, Monox, Clay and so on.
- Dyestuff
Anthraquinone, black iron oxide, indigo blue pigment, butyrate, titanium hydroxide, zinc sulfide, and various azo dyes intermediates.
