Freeze-dried Vegetable Powder Drying Machine
Freeze-dried vegetable powder drying machine
The energy-saving preparation method of vegetable freeze-dried powder is characterized as follows:
1. Choose fresh vegetables for cleaning and processing, the vegetables can be leaf vegetables, leaf and stem vegetables, roots, melons and fruit vegetables.
2. Cyanine killing treatment.
3. Crush, beat and fine grind the vegetables treated with cyanine; Vegetable fine grinding, the required fineness between 600 ~ 900 mesh.
4 Put the vegetable pulp in the concentrator for vacuum concentration; The concentration temperature of vegetable pulp is required to be between 50 and 65 degrees Celsius. Vegetable slurry concentration method using a drier with stirring; In the concentrated vegetable pulp, the solid content is required to be 35 ~ 65%.
5. Put the concentrated vegetable slurry on the plate and conduct the quick-freeze treatment.
6. The frozen vegetable slurry enters the vacuum chamber, preheats it to close to the azeotropic point, and then vacuum it to sublimate the ice.
7. The material that has been removed from the moisture is in block shape, and the required fineness is achieved by crushing, which is the finished product of powder vegetables.
The purpose of drying food is to keep it from spoiling. Vacuum freeze-drying, referred to as freeze-drying, is the principle of the food containing a large amount of water is first frozen into a solid at low temperature, and then the water directly sublimated under vacuum conditions, and the wood of the food remains in the frozen ice shelf.
Food freeze-drying technology has many advantages, such as less loss of nutrition, convenient storage and transportation, quick recovery and so on. General food freeze-drying machine mainly includes vacuum system, heating system, refrigeration system, condensation system, defrosting system and control system, the control system is the core command organization of the whole equipment, freeze-dried food production process pre-treatment refers to cleaning materials (cleaning, peeling, cored, slitting, etc.), In this way, the moisture attached to the surface of the material can ensure that the original shape remains good in the process of freeze-drying, and the uniform moisture can ensure that the material is freeze-dried. When the material is pre-frozen to about -30℃, it should be given sufficient time, and must be below the eutectic point. After pre-freezing, vacuum is pumped. Some sublimation needs to absorb heat, so heating is needed to keep the material temperature close to and below the eutectic point temperature. After a period of time when the water sublimates a lot, the rate of warming should be slowed down to prevent shrinkage or bubbling. When all the frozen water evaporates and the product is set, the heating rate can be accelerated. The material temperature is required to 30-35℃ after staying for 2 to 3h to end, break the vacuum to take the finished product, and defrost process.
Parameter：
KFD-1 | KFD-2 | KFD-5 | KFD-6 | |
Capacity (Kg/Batch) | 10 | 20 | 50 | 60 |
Shelf Area (㎡) | 1.1 | 2 | 5 | 6 |
Shelf Size (Mm) | 500*400 | 700*500 | 800*895 | 950*800 |
Shelf Quantity (Layer) | 5+1 | 6+1 | 7+1 | 8+1 |
Max Catch Water（Kg） | 15 | 30 | 75 | 90 |
Ultimate Vacuum | 1 | 1 | 1 | 2 |
Electricity（Kw） | 12 | 16 | 22 | 34 |
Size（Mm） | 2200*1000*2000 | 2500*1000*2300 | 2200*1200*2400 | 3500*1400*2430 |
Weight（Kg） | 1500 | 2000 | 2500 | 3000 |
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