Drum Scraper Dryer

Drum Scraper Dryer is a kind of rotating continuous drying equipment with internal heating conducting-style. Certain thickness of materials film attach to the drum from material liquid vessel under the drum. Heat is transferred to the internal wall of the cylinder through pipes and then to the external wall and to materials film, to evaporate the moisture in materials film so as to dry materials. Dried products are then scraped off by the blade fitted on the surface of the cylinder, fall down to the spiral conveyor under the blade, and are conveyed, collected and packed.

Model	Roller size(mm)	Effective heating area(m2)	Drying capacity(kg/h)	Steam consumption(kg/h)	Power(kw)	Dimensions(mm)	Weight(kg)
HG-600	Φ600×800	1.12	40-70	100-175	1.1	1700×800×1500	850
HG-700	Φ700×1000	1.65	60-90	150-225	2.05	2100×1000×1800	1210
HG-800	Φ800×1200	2.26	90-130	225-325	3.75	2500×1100×1980	1700
HG-1000	Φ1000×1400	3.3	130-190	325-475	4.75	2700×1300×2250	2100
HG-1200	Φ1200×1500	4.24	160-250	400-625	4.75	2800×1500×2450	2650
HG-1400	Φ1400×1600	5.28	210-310	525-775	6.25	3150×1700×2800	3220
HG-1600	Φ1600×1800	6.79	270-400	675-1000	6.25	3350×1900×3150	4350
HG-1800	Φ1800×2000	8.48	330-500	825-1250	8.6	3600×2050×3500	5100
HG-1800A	Φ1800×2000	10.6	420-630	1050-1575	8.6	4100×2050×3500	6150

Feature:

1.High thermal efficiency.
Because the heat transfer mechanism of the drum dryer is heat conduction, the direction of heat transfer is consistent throughout the operating cycle, except for the cover heat dissipation and heat radiation loss, the rest of the heat is used for the evaporation of the moisture of the cylinder material film, and the thermal efficiency is up to 70%-80%.

2.The operation is flexible and widely applicable.
Many drying factors of the drum dryer can be adjusted. Such as the concentration of the feed material, the thickness of the coating film, the temperature of the heating medium, the rotation speed of the drum, etc., can change the drying efficiency of the drum dryer, and a number of factors are not related to each other. This brings great convenience to the operation of drum drying, so that it can adapt to the drying of a variety of materials and different output requirements.

3.Short drying time.
The drying cycle of the material is generally only 10-300 seconds, in suitable for heat-sensitive materials. If the drum dryer is set in the vacuum, it can be operated under reduced pressure.

4.Large drying rate.
As the material film smeared on the cylinder wall is very thin, generally in 0.3-1.5mm, and the direction of heat and mass transfer is consistent, the surface of the material film can maintain the evaporation of 20-70kg.H2O/m2.h strong.

principle:

Drum dryer is a kind of rotating continuous drying equipment with internal heat conduction. The rotating drum, through its lower trough, adheres to a thickness of material film, the heat is transported to the inner wall of the drum through the pipeline, conducted to the outer wall of the drum, and then conducted to the material film, so that the wetness in the material film can be evaporated, dehumidified, so that the materials containing moisture can be dried. The dried material is shoveled away from the drum by the scraper installed on the surface of the drum to the screw conveyor placed under the scraper, and the dry material is concentrated and packed through the screw conveyor.

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