Low temperature fruit and vegetable vacuum tray drying oven machine
BSVD vacuum dryer is suitable for drying heat sensitive raw
materials which often decompose, polymerize or metamorphose under
high temperature.It is widely used in the final of pharmaceutical,
chemical, foodstuff and electronic industry.Such as vegetables,
fruits, condiments, aquatic products, biological products,
medicine, etc.
Working method:
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.
Main features:
1. When the equipment is running, the material is in a static
state. It is helpful to maintain the original shape of the material
2. Intermittent operation, can adjust the process conditions at any
time, this equipment is manual loading and unloading.
3. The square series dryer, with an arched structure on the top,
can effectively overcome the problem of condensed water dripping
back and further improve the drying efficiency. The exclusive
design adopts a four-point vacuum structure to ensure the
uniformity of material drying. .
4. This equipment can be used for low temperature drying and
solvent recovery.
5. Especially suitable for materials that are afraid of oxidation
and easy to decompose during the drying process.
Technical data:
| Model | BSVD-10 | BSVD-15 | BSVD-20 |
| Inner size of drying chamber(mm) | 1500*1040*1200 | 1500*1400*1200 | 1500*1800*1200 |
| Overall size(mm) | 1676*1700*1564 | 1676*2060*1564 | 1676*2500*1564 |
| Layers of backing support | 5 | 8 | 12 |
| Interval(mm) | 120 | 120 | 120 |
| Size of baking tray(mm) | 460*640*45 | 460*640*45 | 460*640*45 |
| Quantity of baking tray | 20 | 32 | 48 |
| Working pressure inside the pipe of baking support(MPa) | ≤0.784
|
| No-load vacuum in the box (Mpa) (when working) | 35-150 |
| No-load vacuum in the box (Mpa) (when not working) | -0.1 |
| At -0.1Mpa, when the heating temperature is 110℃, the vaporization
rate of water | 7.2 |
| Vacuum pump power when using condenser(kw) | 5.5 | 5.5 | 7.5 |
| Vacuum pump power when condenser is not used (kw) | 4 | 5.5 | 5.5 |
| Heating source | Steam or electricity |
| Weight of drying chamber(kg) | 1400 | 2100 | 3200 |
