As a trustworthy international trading company, shandong leader machinery Co.,ltd. Not only provide high-quality microwave drying sterilization equipment, customized turnkey solution is one-stop service. Procurement advice, floor plans, operational training and life-long free technical support are provided by our professional and technical personnel.
shandong leader machinery Co.,ltd. The main sales of microwave drying equipment and microwave sterilization equipment.
Microwave drying equipment is the principle of the frequency of 300 MHz to 300,000 MHz electromagnetic waves. The water molecule in the heated medium material is a polar molecule. Under the action of fast changing high frequency electromagnetic field, the polarity orientation will change with the change of the external field, which results in the movement and friction effect of the molecule. The field of the microwave field can be converted into the heat enerLD in the medium, so that the material temperature rises, and a series of physicochemical processes such as heating and puffing are produced, so as to achieve the microwave heating drying.
Pine nut drying---microwave drying
This machine fit for drying and sterilizing powered ,granular, sheet-like or gel-like food ,and additive, flavoring, medicine, raw material of herbal medicine, nutritional health products, agriculture & sideline products, non-fried(or oil-saving)instant noodles, noodles, rice powder noodles, soy products, beef jerky, preserved meat, dried fish ,tea, tobacco and so on; and for drying, peeling and baking almond, peach kernel, groundnut kernels, chestnut and so on; and for puffing of leisure food ,pachyrhizus chips, potato chips, dried shrimps, fish maw and so on; and for sterilizing and oral liquor, pickles, a variety of small packaging food ;and for drying beans; and for thawing the frozen fish ,poultry; and for drying and desulfurating and deoxidizing the metallurgical chemical products; and for drying printing and dyeing products, ceramics, glass, chemical fiber, cotton yarn, wood, leather, bamboo products, insulation materials, building materials, cork, alveolate cardboard, corrugated ,and so on.
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 enerLD can be converted to heat enerLD 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 rupture.
Microwave drying is different from the traditional drying method, and the direction of heat conduction is the same as that of water diffusion. Compared with the traditional drying method, it has the advantages of large drying rate, enerLD saving, high production efficiency, uniform drying, clean production, easy to realize automatic control and improve product quality, so it is more and more attention in various fields of dryness. The application and theory of microwave drying technoloLD have been studied extensively in the last century and abroad in the 60, and have been further developed in recent decades. China's Pine nuts drying---microwave drying research started late, compared with foreign countries have a certain gap, but also achieved good results, there are many research and application results. microwave vacuum dehydrator is now used in food industry, materials and chemicals, pharmaceutical industry, mining industry, ceramic industry, laboratory analysis, wet natural rubber processing.