Product Overview :
Drum dryer is an internally heated conductive rotary continuous drying equipment. The rotating drum is adhered to a thick film through its lower chute, and heat is transported to the inner wall of the drum through pipes, conducted to the outer wall of the drum, and then transmitted to the film, causing the moisture in the film to evaporate, dehumidify, and dry the material containing moisture.
Working principle
Drum dryer is an internally heated conductive rotary continuous drying equipment. The rotating drum is adhered to a thick film through its lower chute, and heat is transported to the inner wall of the drum through pipes, conducted to the outer wall of the drum, and then transmitted to the film, causing the moisture in the film to evaporate, dehumidify, and dry the material containing moisture. The dried material is removed from the drum by a scraper installed on the surface of the drum and transported to a screw conveyor placed below the scraper. The dry material is then collected and packaged by the screw conveyor.
Performance characteristics
◎ High thermal efficiency. Due to the fact that the heat transfer mechanism of the drum dryer belongs to thermal conduction, the direction of heat transfer remains consistent throughout the entire operation cycle. Except for cover heat dissipation and thermal radiation loss, all other heat is used for the evaporation of the wet film of the drum material, and the thermal efficiency can reach 70% -80%.
◎ Has great operational flexibility and wide applicability. Various drying factors of the adjustable drum dryer. Factors such as feed concentration, coating film thickness, heating medium temperature, and drum rotation speed can all affect the drying efficiency of the drum dryer, and these factors are not interrelated. This brings great convenience to the drum drying operation, enabling it to adapt to the drying of various materials and meet different production requirements.
◎ Short drying time. The drying cycle of materials is generally only 10-300 seconds, which is suitable for heat sensitive materials. If the drum dryer is set in a vacuum chamber, it can operate under reduced pressure conditions.
◎ High drying rate. Due to the thin film of coating applied to the cylinder wall, generally between 0.3-1.5mm, and the consistent direction of heat and mass transfer, the surface of the film can maintain an evaporation strength of 20-70kg · H2O/m ² · h.
Suitable for drying liquid or viscous materials in industries such as chemical, dye, pharmaceutical, food, metallurgy, etc.
Adapt to materials
◎ Suitable for drying liquids or viscous materials in industries such as chemical, dye, pharmaceutical, food, metallurgy, etc.
Installation
This machine is installed according to the overall layout, with a flat ground and pressure gauges and safety valves installed at the steam pipe inlet. The flanges of each steam inlet are firmly connected.
Maintenance
◎ Regularly check the rotational flexibility of rotating parts for any jamming. Chain wheels and other components should be lubricated regularly, and measuring devices such as pressure gauges should be calibrated regularly for errors. If there is severe wear on the triangular belt transmission components, they should be replaced in a timely manner.
◎ For maintenance of motors and reducers, please refer to the motor and reducer use and maintenance manual.
Debugging
After installing this machine, a trial operation experiment should be conducted first
◎ Jogging the main motor to observe that the main drum rotates correctly.
◎ Observe whether the main drum and various transmission components rotate flexibly, whether the steam inlet and outlet are connected, and whether the pressure gauge is within the working pressure range.
◎ Start the motor, and the main drum runs smoothly. After the temperature rises, add materials and adjust the motor speed and the uniformity of the film on the drum to control the final water content of materials.
◎ Start the winch motor, output dried finished materials, and adjust the winch motor speed according to the amount of dried finished products.
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| Rolling scratch board drier | Rolling scratch board drier | Rolling scratch board drier |
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| Drum body | Cylinder adjustment scraper | Scraper |
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