Overview:

The drum scraper dryer is an internal heating conduction type rolling continuous drying equipment. The rotating drum passes through its lower chute and adheres to a thick film of material. Heat is transported through pipes to the inner wall of the drum, conducted to the outer wall of the drum, and then transmitted to the film, causing the humidity in the film to evaporate, dehumidify, and dry the material containing moisture. The dried materials are removed from the drum by a scraper installed on the surface of the drum, and then transported to a spiral conveyor placed below the scraper. The dry materials are collected and packaged by the spiral conveyor.

Characteristics:

● High thermal power. 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 heat radiation loss, all other heat is used for the evaporation of the wet film of the drum material, and the thermal power can reach 80% -90%.

● High operational flexibility and wide applicability. Many drying elements of the adjustable drum dryer can be adjusted. The drying power of the drum dryer can be modified by factors such as the concentration of the feed, the thickness of the coating film, the temperature of the heating medium, and the rolling speed of the drum, and many of these factors are not interrelated. This brings great convenience to the drum drying operation, allowing it to adapt to the drying of various materials and 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. Because the coating film applied to the cylinder wall is very thin, usually between 0.3-1.5mm, and the direction of heat and mass transfer is consistent, the surface of the film can withstand 20-70kg? H2O/m2？ H has strong evaporation.