Complaint
Vacuum dryer for fruit and vegetable can be used for low temperature drying. Heat source can be steam, hot water and thermal oil.
It is suitable for drying heat sensitive materials, like herb, leaf, fruit, vegetable and so on.
In the drying chamber, material will be dried under vacuum condition.
Under the vacuum condition, the boiling point of material solution will reduce.
It will increase impetus for heat and mass exchange.
Therefore for certain heat exchange amount, it can save heat exchange area of evaporator.
On the top of vacuum dryer, heating system is arranged to tackle the problem of return of condensed water, in addition, air suction is arranged at the side to improve drying efficiency.
Working principle of Vacuum dryer for fruit and vegetable
Pure water has the maximum vaporization rate when it is boiling. Under normal pressure, pure water starts to boil at about 100°C. Under vacuum conditions, because the partial pressure of water vapor in the system is much lower than the partial pressure of water vapor on the surface of the material, the boiling point of water is lower than 100°C. For example: when the surface drops to -0.07Mpa, the water starts to boil at 70°C. General rule: the higher the vacuum, the lower the boiling point of water. In the vacuum dryer, the vaporized water can be quickly removed with the vacuum generation, so even at a lower operating temperature, the dryer still has a greater drying capacity.
Advantages of BSVD Vacuum dryer for fruit and vegetable:
1) With an arched structure on the top, can effectively overcome the problem of condensed water dripping back and further improve the drying efficiency.
2) The exclusive design adopts a four-point vacuum structure to ensure the uniformity of material drying.
3) Suitable for drying heat sensitive materials.
4) Three kinds of heating sources can be selected.
Brightsail Machinery has found nearly 15 years, who designs and manufactures overall powder processing solutions for the Chemical, Pharmaceutical, Food, Mineral, Cosmetic and Plastic industries, like powder grinding machines, mixing machines, sifting machines...etc.
Brightsail is constantly committed to develop new advanced techniques and methods on the machines, since our goal is to be your trusted manufacture of creative and value added process solutions.
*Usually small machine will be packed in the wooden case, and we could also pack it according to customers' special request.
*If machine is big, we will fix the machine inside container with steel wires and nails. Machine won't move inside the container.
