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- Vacuum Agitating Dryer
Vacuum Agitating Dryer
Vacuum Agitating Dryers, which are of conducted-heat transferring system, are generally of batch operation under vacuum.
The body is in cylindrical or channel (U) form with a jacket mounted and equipped with a uniaxial agitator having ribbon vanes or puddle vanes. There are also models as having a dual-axial agitator in the body of “U” form according to the properties of the treated material.
Features |
- Since drying is performed under vacuum, temperature difference between the heat-transfer area and treated material can be large.
- Since the treated material directly contacts the heat-transfer surface while it is being agitated and crushed, uniform dried products can be obtained efficiently.
- Since it can be operated under high vacuum (low temperature) by selecting a shaft sealing type, it is suitable for drying materials which are subject to air oxidation or deterioration by high temperatures.
- It can be used for materials whose vapors have hazardous properties or solvents.
- Flying of powder is fewer compared to the hot air drying method.
- Hot water, steam, and heat-transfer oil can be used as the heat source.
- When handling materials which are easy to adhere and become a dough or massive form, the drying speed can be accelerated and the rotational resistance can be reduced by inserting a ball or round bar.
Test machines |
We have test machines as shown in the photo below always available, and we are ready to carry out a test as needed and present the plan of equipment.
Model | Special paddle type (Kantaro vane)) |
---|---|
Dimension | φ300×500L |
Capacity | 20 liters |
Material | SUS316 |
Heat-transfer area | Jacket 0.34 m2 Shaft, vane 0.45 m2 |
Working pressure | Vacuum in the drum |
Shaft rotation speed | 10 ~ 40rpm |