Industrial microwave machine for Tea Drying

Microwave is electromagnetic waves which frequency from 300 MHZ to 300000 MHZ. Water molecule of heating medium material is polar molecule, its polarity orientation of the electric field with changes caused by the movement of molecules under high rapid frequency electromagnetic field changes, cause the numerator movement and the friction effect of each other. Microwave field can field at this time into medium heat, make temperature of material increase, produce and popped a series of materialization process to reach the heating dry purpose.

Microwave equipment for tea: fixation, drying, sterilization, and insecticide. It help improve tea quality, one machine with multiple functions, which is an indispensable equipment for tea processing.

General hot air drying process, material external heated, surface drying, heat transfer inwards, the direction and water diffusion direction in the opposite direction, affect the moisture to evaporate.But microwave?is an internal heating, The part of high water content heat up faster.So in the microwave drying process, water migration speed from the inner to the outer is high, drying speed is significantly faster than hot air drying.

Application of microwave drying in the drying tea has the following advantages:

1.Fast drying speed .Microwave heating is completely different with traditional heating mode. It makes heating medium become heater, do not need heat transfer process. Although thermal conductivity is poor materials, also can achieve heating temperature in a very short time.

2.?Save energy and efficiency. Because materials contain water absorb microwave easily and fever, so in addition to a small amount of transmission loss outside, almost no other loss, so high thermal efficiency, save energy.

3. Heating uniform. No matter how shape of each part of the body, microwave heating all can make the object and evenly infiltration and electromagnetic wave list to produce the heat. So heating good uniformity, won't appear the endogenous phenomenon focal.

4.High tea quality, because tea surface temperature is not too high, less chlorophyll changes, colour and lustre is green emerald green, less aroma loss;

5.Improve the hygienic quality of tea. There is no need to burn coal and wood , there is no pollution from smoke and dust. At the same time, realize ?the automation and continuity of tea processing, avoid the secondary pollution caused by conventional processing?well.

Microwave machine features:

1)?Tunnel conveyor belt type, work continuously;

2)?Adjustable power ,it adjust automatically according to the temperature;

3)?Temperature control ,well avoid the burning phenomenon that may occur due to excessive temperature;

4)?Adjustable conveyor belt speed ,can adjust according to different product characteristics;

5)?Customized power supply , machine size , inlet/outlet height .?