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: