Square fresh fruits mango dryer oven vacuum herb leaf drying
machine
The vacuum drying machine is the mass transfer operation in which
the moisture present in a substance, usually a wet solid, is
removed by means of creating a vacuum. Vacuum drying is generally
used for the drying of substances which are hygroscopic and heat
sensitive, and is based on the principle of creating a vacuum to
decrease the chamber pressure below the vapor pressure of the
water, causing it to boil. With the help of vacuum pumps, the
pressure is reduced around the substance to be dried. This
decreases the boiling point of water inside that product and
thereby increases the rate of evaporation significantly.
The materials to be dried are kept on the trays inside the vacuum
fruit dryer and pressure is reduced by means of vacuum pump. The
dryer door is tightly shut and steam is passed through the space
between trays and jacket so that the heat transfer occurs by
conduction. Water vapors from the feed is sent into the condenser
and after drying vacuum pump is disconnected and the dried product
is collected from the trays.
Main features:
1) The heating sources are optional, you can use steam or
electricity.
2) It is beneficial to maintain the initial form of the material,
intermittent operation, and can adjust the process conditions at
any time.
3) With an arched structure on the top, can effectively overcome
the problem of condensed water dripping back and further improve
the drying efficiency.
4) The exclusive design adopts a four-point vacuum structure to
ensure the uniformity of drying of materials.
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 |
