microwave drying / Industrial tunnel type microwave roasting equipment for pistachios

microwave drying / Industrial tunnel type microwave roasting equipment for pistachios

Application:

Microwave industrial tunnel baking&puffing equipment are widely used in the peanut, sesame seeds,

wheat, melon seeds, sunflower seeds, peanuts, corn, soybeans, walnuts, almonds, chestnuts, pistachios,

cashews, filbert and dried fruit etc; and for leisure food, pachyrhizus chips, potato chips, dried

shrimps, fish maw and so on. Compared with the traditional production methods, microwave baked

foods are crispy and delicious, products particle puffed full, natural color, beautiful appearance, and

has insecticidal sterilization effect.

The principle of microwave heating

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 mudium to rise the temperature of materials.accomplishing heating ,puffing and a series of physical and chemical processes ,and so ,mircrowave heating is achieved.

The principle of microwave sterilizing

Mircowave sterilizing is the result of combined action of the thermal effect of eletromgnetic fields and the biological effect.Thermal effect of microwave on the bacteria denatures the protein of bacteria ,and make the bacteria lost the condition of nutrition,reproduction and survival so as to die .The biological effects of microwave on the bacteria is that the microwave electric field changes the potential distribution of cross-section of the bacterial cell membrane and impacts the concentration of electron and lon around the membrane ,and changes the permeability of cell membranes ,therefore the bacterium become innutrient and lost normal metabolism.The structure and function of bacterium fall into disorder ,and theirs growth are inhibited ,as a result they are dead.Moreover ,nucleic acid genetic(RNA) and deoxyribose acid (DNA),which decide the normal growth and stability of bacterial,are curly-shaped macromolecule made of a number of linked compactly hydrongen bond .The microwave can be strong enough to make hydrogen bond stack ,rupture and recombine ,and induce intragenic mutation or chromosome aberration and even rupure.

Characteristic of microwave roasting machine

1. Energy conversion efficiency high, fast heating.

Microwave oven itself, but microwave energy fever, make the material through materials within polarity produced molecular friction between internal heat. Make the liquid inside processed materials instantaneous warming vaporization, boosting inflation; And depend on gas expansion force make component of macromolecule substance, and become a structural degeneration areolar tissue structure characteristics, finalize the design of microporous shape more than substance.

2. when microwave baking ,sterilization effect at the same time.

Microwave sterilization is in the microwave heating and the dual role of non-thermal effect under the temperature sterilization, compared with conventional in lower temperature and very short time get satisfactory antiseptic effect. General sterilizing temperature around in 80 °C, the processing time in 3 ~ 5 minutes, and to the maximum maintain its nutrients.

3.The operation is convenient.

Microwave power and conveyor belt speed can adjust arbitrary

, both thermal inertia, but do not exist, simple, easy to open namely stop control. Improve the production environment. Microwave equipment nirvikalpa radiation, no dust, no noise, no pollution, easy to realize the food hygiene inspection standard.

4. Puffed effect is obvious.

Microwave fast heating effect, make the material internal water molecules, achieve rapid vaporization ,reach to the puffed purpose.

5. Low temperature sterilization, nutrition loss less.

Microwave sterilization is in the microwave heating and the dual role of non-thermal effect under the temperature sterilization, compared with conventional in lower temperature and very short time get satisfactory antiseptic effect. General sterilizing temperature around in 80 °C, the processing time in 3 ~ 5 minutes, and to the maximum maintain its nutrients. The reserves of vitamin C conventional heat treatment fruits and vegetables is 46% ~ 50%, microwave, can reach 60 ~ 90; Keep to vitamin A conventional heat treatment is 58 percent, and microwave treatment is to 84%, and would not affect the original flavor, is the fruit and vegetable food processing, obtain the good means green food.

Introduction of the design of microwave 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.

Technical parameter:

Please note:Inlet/outlet orifice,conveyor belt size and overall dimension can be designed according to your requirements.

microwave drying / Industrial tunnel type microwave roasting equipment for pistachios

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Welcome to enquiry! Our company has engaged in producing and exporting microwave drying sterilization roasting machine for many years, and until now, our machine has exportes to overseas market, such as Brazil, India, Indonesia, Russia, Thailand and so on, and get high reputation of customers' long time using. So you can be at ease about our service, and quality of our machine.

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