The detailed description of three drum dryer
The three-drum dryer or three-drum drying machine is a contact internal heating conduct dewatering unit. During the dewatering process, heat is transmitted from the inner wall of the roller to the external wall, passes through the food materials on the external wall, and then vaporizes the moisture of the materials.
The advantages and benefits of three drum dryer
Triple drum dryer or triple drum dryer drying machine has compact structure and covers a small area which is half of the single drum dryer does. It works reliably with low energy consumption and high heat efficiency which realizes the goals of good material drying effect, simple automation control, and few operating staff.
Working process
Materials enter the inner side of the drum through the feeding device to realize current flow drying process. They get raised and scattered under the shoveling plate in a spiral advancing way to exchange heat.
Then the materials enter the middle layer of the inner wall through the other end to realize the counter current drying process. They are lifted in over and over in the middle layer advancing in two-steps forward and one-step back way.
They absorb heat from both inner drum and middle drum, which extends the drying time and realizes the best drying condition. Finally, materials fall into the external layer of the drum from the other end of the middle layer, processing in a rectangle multi-loop way.
The dried materials move quickly out of the drum under the hot air, while the wet ones remain to stay in the drum because of their own weight. Materials are dried completely inside the rectangle shoveling plate and then cooled by the single drum cooler, thus finishing the whole drying process.
Parameter
| Item/Unit/Model | Φ2.5×7m | Φ2.7×7m | Φ3.0×7.0m | Φ3.2×7.0m | Φ3.6×8m |
| Diameter of outer cylinder(m) | 2.5 | 2.7 | 3.0 | 3.2 | 3.6 |
| Length of outer cylinder(m) | 7 | 7 | 7.0 | 7.0 | 8 |
| Cylinder volume( m³ ) | 16.63 | 16.63 | 52.678 | 52.678 | 81.38 |
| Rotating speed of cylinder(rpm) | 4-10 | 4-10 | 4 -10 | 4 -10 | 4 -10 |
| Initial moisture of slag(%) | 10-12 | 10-12 | 10-12 | 10-12 | 10-12 |
| Final moisture of slag(%) | 1 | 1 | 1 | 1 | 1 |
| Initial moisture of yellow ground(%) | 8-10 | 8-10 | 8-10 | 8-10 | 8-10 |
| Final moisture of yellow ground (%) | 0.5-1 | 0.5-1 | 0.5-1 | 0.5-1 | 0.5-1 |
| Highest intake air temperature(℃) | 700-750℃ | 700-750℃ | 700-750℃ | 700-750℃ | 700-750℃ |
| Production capacity(T/h) | Yellow sand: 25-30 Slag: 20-25 |
Yellow sand: 30-35 Slag: 25-30 |
Yellow sand: 35-40 Slag: 30-35 |
Yellow sand: 45-50 Slag: 35-40 |
Yellow sand: 65-70 Slag: 60-65 |
| Motor type | Y2-132m-4E | Y2-132m-4E | Y2-160m-4 | Y2-160m-4 | Y2-160m-4 |
| Motor power(kw) | 7.5×2 | 11×2 | 7.5×4 | 7.5×4 | 15×4 |
| Reducer type | XWD7-23-11W | XWD7-23-11W | XWD6-23-7.5KW | XWD6-23-7.5KW | XWD8-23-15KW |
| Velocity ratio of reducer | 29 | 29 | 29 | 29 | 29 |
| Item/Unit/Model | Cylinder volume( m³ ) | Production capacity(T/h) |
| Φ2.5×7m | 16.63 | Yellow sand: 25-30 Slag: 20-25 |
| Φ2.7×7m | 16.63 | Yellow sand: 30-35 Slag: 25-30 |
| Φ3.0×7.0m | 52.678 | Yellow sand: 35-40 Slag: 30-35 |
| Φ3.2×7.0m | 52.678 | Yellow sand: 45-50 Slag: 35-40 |
| Φ3.6×8m | 81.38 | Yellow sand: 65-70 Slag: 60-65 |