Food Freeze Dryer (JDG)
| Model NO.: | JDG |
| Customized: | Customized |
| Voltage: | Customized |
| Brand Name: | Unimach |
| Trademark: | UNIMACH |
| Transport Package: | Wooden Case |
| Origin: | China |
| Product Description |
| Working principles |
|
The vacuum freeze drying is a drying method fordehydration and preservation of substances. It sublimes the moisture in thepre-processed substance from solid state into gaseous state by -30 centigradequick-freezing under the vacuum condition. JDG series vacuum freeze drying equipment mainlyincludes food pre-freezing system, drying bin system, heating system, vacuumsystem, refrigerating system, material conveying system, medium system,pneumatic system, cleaning and sterilizing system. |
| Features |
| 1. The vacuum system is in combination structure ofwater-sealed pump + oil-sealed pump. The extraction of pre-vacuum is performedby oil-sealed pump group of large power and the vacuum for operation remains bywater-sealed Roots pump group of small power so as to reduce energyconsumption. Meanwhile, the water-sealed pump group can remove vacuityinstability of the system due to poor water-removal performance of oil-sealedpump and emulsification deterioration of the pump oil. 2. Heating is conducted in closed water circulation system, where three-wayadjusting valve is used for automatic adjustment of heat supply to the watercirculation system to precisely control temperature of the heating plate.Besides, nitrogen is used for automatic pressure-keeping to ensure the workingtemperature of the hot water reaching 120 centrigrade. 3. The rear-installed and side-installed water-catching cold trap is adopted.Compared with the outside-installed cold trap, the former one has advantages ofshort canal, lower resistance, and smooth steam canal, uniform andhigh-efficient water-catching. The cold trap uses special method of ammoniumsingle-phase circulating refrigeration. It is more stable in supplyingrefrigerating liquid and easier in operation than the general method of liquidsupply. |
| Application |
| Vacuum freeze drying technology is currentlyworldwide most advanced technology for food dehydration processing. Comparedwith the commonly used drying method, the freeze-dried food produced with thistechnology features long period of quality assurance, good re-hydration nature,good-looking color, good flavor, taste and high content of nutritiouscomponents. The dried food basically remains unchanged in its volume and shape,looks like sponge and has no shrinking. This drying technology can be widely usedin process of vegetables, fruits, condiments, aquatic products, biologicalproducts, medicine, beverage and etc. |
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