Industrial conveyor belt tunnel type microwave drying machinery for mint leaf

Industrial conveyor belt tunnel type microwave drying machinery for mint leaf

Brief introduction

1. Fast drying, save time

2. Uniform heating, uniform drying

3. Continuous working, tunnel conveyor belt type

4. Can sterilize product at the same time

5. Keep original color, nutrition, ingredient

6. Drying temperature can be adjustabled, easy to control, safety

Application

Microwave drying equipment are mainly used for drying all kinds of teas,herbs, acanthopanax, tobacco, mint leaves, leaves, medicinal herb, calendula, cornflower, raspberry, blaeberry, oregano leaves, liquorice tables, olive leaves, stevia leaves, flowers, green leaves, such as wild chrysanthemum flower,broadleaf holly leaf, olive leaf, lotus leaf, honeysuckle , green tea,black tea,puer tea, flower tea.

Microwave drying principle

Microwave is a sort of electromagnetic wave which frequency is 300MHz to 300GHz .The water molecule in medium materials is polar molecule,under the effect of the rapid change of electromagnetic field,its polarity orientation will alter with the changes of the external electric field with the high-speed,causing the movement and friction of molecule.

So that the microwave field energy can be converted to heat energy in medium to rise the temperature of materials.accomplishing heating ,puffing and a series of physical and chemical processes ,and so ,microwave heating is achieved.

Features of design of machine

1.Transmission System:

a. Speed of Conveying belt is adjustable.

In the transmission system, it applies frequency-converting control of speed, worm gear reducer.

b. The conveyor belt is Teflon Belt,special for microwave.

c. The deviation of belt is adjusted with Hand-movement.

2. The body of the Tunnel

a.The body of the microwave tunnel is made of Stainless Steel. In side there is one set of humidity extraction system to extract the humidity after heating.

b. To be safe, there is Automatic Power-off device while open the door of the machine.

c. The protecting case of Magnetic-pipe and transformer is made of stainless steel. On top there is one set of Heat extraction system to extract the heat energy generated by

working of machine.

d.The frame of machine is made of Stainless Steel pipe ,others is made of cold-rolled sheet painted.

e.One set of infrared thermometric is installed at the outlet of the tunnel to measure the temperature.

3.The controlling system

a. On the outside panel there are frequency converting speed controller, emergency stop button, Start, Stop buttons,

b. All the controlling components will be installed into one controlling box, which is at the entrance of the machine.

c.Ordinary button control system,.

d.The microwave power can be adjusted by choosing in the display text.

e. Every microwave source is an independent unit.If one is broken, the machine will not be prevented from running.

f. Every magnetron has an overheating protection device.

Characteristic of microwave drying machine

1, Fast heating. 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 even. 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, Mould proof, sterilization, fresh. Microwave heating has thermal and biological effect, can sterilize and mould proof in low temperature.Due to heating rapidly, the time is short, can maximum limit save material activity and the vitamin original color and lustre and nutrition of food.

5, Craft is advanced, control easily. Microwave heating just have the basic conditions of water, electricity, as long as control power, can realize microwave heating or terminate immediately, use microwave equipment can process automation control of heating process and heating process specification.

6, Covers less area, safety and harmless. Because microwave can be controlled in made of metal heating indoor and wave, so microwave leak is few, no radiation hazards and harmful gases, do not produce the waste heat and dust pollution; Neither polluting food, also do not pollute the environment.

Technical parameter

Pictures