Double Cone Rotary Vacuum Dryer for Powder

Features of Double Cone Vacuum Dryer for Powder

(1) During the vacuum drying process, the pressure inside the cylinder is always lower than the atmospheric pressure, the number of gas molecules is small, the density is low, and the oxygen content is low, so it can dry easily oxidized drugs and reduce the chance of material contamination.
(2) Since the temperature of the moisture in the vaporization process is proportional to the vapor pressure, the moisture in the material can be vaporized at a low temperature during vacuum drying to achieve low-temperature drying, which is especially suitable for the production of pharmaceuticals with heat-sensitive materials.
(3) Vacuum drying can eliminate the surface hardening phenomenon that is easy to occur in normal pressure hot air drying. This is because the pressure difference between the vacuum drying material and the surface is large. hardening.
(4) Due to the small temperature gradient between the inside and outside of the material during vacuum drying, the moisture can move and collect independently due to the reverse osmosis effect, which effectively overcomes the dispersion phenomenon caused by hot air drying.

Applications of double cone vacuum dryer:

This Drying Machine is suitable for concentration, mixing and drying of powder, granular and fibrous materials in such industries as chemical industry, medicine, food, etc., and materials that require low temperature drying(such as biochemical products), and is more suitable for drying of materials that are easy to oxidize, volatize, heat sensitive materials, irritant and poisonous materials, and materials in which breaking of crystals is not allowed. The rotary cone vacuum dryer is an important industrial dryer machine, lots of customers choose it. 

Principle:

• After the heat source(such as hot water, low pressure steam or heat transfer oil) is connected to the closed jacket, the heat is transferred from the inner shell to the materials to be dried.

• Driven by the power, the tank makes slow rotation and the materials in the tank are continuously mixed so as to realize the purpose of drying.

• When the materials are under vacuum, the steam pressure reduces to make the moisture(solvent) on material surtaces reach the saturation status and evaporate, and discharged and recovered timely from the vacuum pump. The moisture(solvent) inside the materials is penetrated, evaporated and discharged towards the surfaces. The three processes are carried out continuously, so that the materials are dried within a very short time.

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