The working principle of Hg series scraper drum dryer is to make liquid or mud-like material form a thin film on the surface of the drum heated by steam or other heat carrier, and then be dried in the course of one turn of the drum, the product is scraped off with a scraper, and the surface of the roller is exposed to contact with the raw material again to form a film for drying.
● With steam or heat-conducting oil as heat source, large heating area, high heat efficiency, uniform heating.
● The drying rate is high, the heat and mass transfer of the wet material film on the cylinder wall are consistent from the inside to the outside, and the temperature gradient is large, which makes the surface of the material film keep high evaporation intensity.
● Short drying time, suitable for heat sensitive materials, easy operation and maintenance.
Applicable to food, chemical, pharmaceutical and other industries viscosity, paste paste material production, drying and other processes.
● High thermal efficiency, The principle of heat trans-fer of the cylinder dryer is heat condction whose conducting direction keeps identical whole opera- tion circle. Except heat dissipation of end cover and radiation loss. all heat can be used for evaporation of wet materials on the wall the cylinder, The deficiency canreach 80%-90%.
● large operation elasticity and wide application. Various drying factors of the cylinder dryer cad be adjusted, such as density of feeding aerials/thicd-ness of materials film. temperature of heating medium, rotating speed of the cylinder etc. which can change drying speed of the umder dryer. As these factors have no interrelations each other, it brings about great convenience to dry operation. and makesit applicable to ing of various materials and to meet different requirement of production.
● Short drying period. The drying period of materials is normally io to15 seconds. so it is suitable for heat-sensitive materials. It can be also rated under less pressure condition if it is put in vacuum.
● Fast drying rate. As film of ruaterials coated on the wall of the cylinder is very thin. Normal, thickness is 0. 3 to 1. 5 mm. plus directions heat and mass trans-mitting are identical, the evaporation strength on the surface of the surface of the film can keep at 30-70 kg. h₂o/m₂. h.
| Type | HG | 5/5 | 5/10 | 5/15 | 9/10 | 9/15 | 9/20 | 9/25 | 9/30 | 10/30 | 15/25 | 15/30 | 15/35 | 15/40 | 15/52 | 20/40 | 20/52 |
| Heating area | m² | 0.75 | 1.5 | 2.3 | 2.8 | 4.2 | 5.6 | 7 | 8.4 | 9.4 | 11.8 | 14 | 16.5 | 18.8 | 24.5 | 25.1 | 32.7 |
| Diameter | mm | 500 | 500 | 500 | 900 | 900 | 900 | 900 | 900 | 1000 | 1500 | 1500 | 1500 | 1500 | 1500 | 2000 | 2000 |
| Length | mm | 500 | 1000 | 1500 | 1000 | 1500 | 2000 | 2500 | 3000 | 3000 | 2500 | 3000 | 3500 | 4000 | 5200 | 4000 | 5200 |
| L A | mm | 2000 | 2500 | 3000 | 3000 | 3500 | 4250 | 4750 | 5250 | 5250 | 5200 | 5750 | 6250 | 6750 | 7500 | 7000 | 7500 |
| W B | mm | 1500 | 1500 | 1500 | 2000 | 2000 | 2000 | 2000 | 2000 | 2750 | 3250 | 3250 | 3250 | 3250 | 3250 | 4050 | 4050 |
| H C | mm | 2750 | 2950 | 3150 | 3250 | 4000 | 4750 | 5500 | 6000 | 6000 | 6000 | 6500 | 7000 | 7500 | 7500 | 7500 | 8000 |
| Host weight | T | 1.6 | 1.8 | 2.0 | 5.4 | 6.3 | 7.2 | 8.2 | 9.1 | 11.2 | 12.2 | 12.8 | 13.3 | 14.2 | 22 | 22.4 | 28.7 |
| Total weight | T | 1.8 | 2.1 | 2.3 | 5.6 | 6.6 | 7.7 | 8.8 | 9.9 | 12 | 13.0 | 13.8 | 14.5 | 15.6 | 23.5 | 23.9 | 30.5 |
| Steam consumption | 0.4MPa/m³ | 6 | 9 | 13 | 18 | 2 | 22 | 24 | 26 | 30 | 40 | 45 | 50 | 55 | 80 | 85 | 98 |
| Applied Power | kw min | 1.5 | 1.5 | 2.2 | 2.2 | 3 | 3 | 4 | 4 | 4 | 5 | 5 | 6.5 | 7.5 | 11 | 11 | 15 |
| max | 7.5 | 7.5 | 9 | 11 | 18.5 | 18.5 | 30 | 36 | 36 | 45 | 55 | 60 | 60 | 60 | 75 |
