Vacuum freeze dryer Vacuum freeze dryer series for vegetable and fruit Chemical ,Seafood
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- Supplier: Zhucheng Yifu Machinery Co. Ltd. [Shandong China]Zhucheng
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Product Overview
Description
Product Description
Vavcuum Freeze Dryer for Fruit Vegetable, seafood, powder, meat, medical .
Vacuum freeze dryer is suitable for the drying of high grade raw material medicine, traditional Chinese medicine, biology, wild vegetable, dehydrated vegetable, food, fruit, chemical, pharmaceutical intermediate and so on. Freeze-vacuum drying is a new type of box structure which combines refrigeration system, vacuum system, heat conduction oil heating system and dehumidification system. The freeze-vacuum drying is carried out by using the storage space in the box.
Vacuum freeze dryer
1. Vacuum freeze dryer is suitable for the drying of high-grade raw material medicine, traditional Chinese medicine, seafood, wild vegetable, dehydrated vegetable, food, fruit, chemical medicine intermediate and so on. [1]
2. The vacuum freeze dryer combines the refrigeration system, the vacuum system, the heating system of heat conduction oil and the dehumidification system, a new type of box structure, which uses the space of material stored in the box to dry the freeze-vacuum drying. It can make the powder have good dispersity after drying.
The vacuum drying process is that no impure matter is mixed into the object, which can keep the original composition and active component of the material and material form undamaged.
Operational principle
After starting the machine, the material is put into the material box for freezing. In the freezing process of materials, on the one hand, the vacuum system takes a part of the water away from it; on the other hand, when the material is frozen, the moisture contained in certain molecules is frozen onto the surface of the material, and the freezing requirements are met. The material is heated and dried by the heating system, and the moisture in the material is brought to the freezer by vacuum to freeze, which meets the requirement of freeze-drying. Freeze-drying is the process of removing water or other solvents from frozen biological products by sublimation. Sublimation refers to solvent, such as water, that, like dry ice, passes directly from solid to gaseous without going through a liquid state. Cheng. Freeze-dried products are called freeze-dried (lyophilizer), a process called freeze-drying. Traditional drying causes the material to shrink and destroy the cells. The structure of the sample will not be destroyed during freeze drying because the solid component is supported by ice in its position. When the ice sublimates, it leaves pores in the dry residue. This preserves the biological and chemical structure of the product and the integrity of its activity. Freeze-drying has many different uses in the laboratory and is indispensable for many biochemistry and pharmaceutical applications. It is used to obtain biological materials that can be preserved for a long time, such as microbes. "Biological culture, enzymes, blood, and drugs, in addition to the stability of long-term preservation, has retained its inherent biological activity and structure. To this end, freeze drying is used to prepare tissue samples for structural studies (such as electron microscopy). Freeze drying is also used in chemical analysis, which can obtain dry samples, or concentrate samples to increase the score. Analysis of sensitivity. Freeze drying makes the composition of the sample stable and does not need to change chemical composition. It is an ideal analytical assistant. Freeze drying can occur naturally. In natural conditions, this process is slow and unpredictable. Through the freeze drying system, people have improved a lot of steps to accelerate this. A process.
Main features:
1. Structure design in accordance with Biopharmaceutical standards. Freeze-dried cavity internal corners, surface roughness, shelf flatness, chamber internal materials all meet the pharmaceutical standards;
2. The control system is stable and reliable. Using PLC programmable logic control system and 7-inch color touch screen, the system is more stable and reliable, friendly man-machine interaction, Chinese and English language conversion;
3. Record vacuum, cold trap temperature, material temperature, shelf temperature and form freeze-dried curve in real time, store data once a minute, record material and equipment status data continuously, support offline browsing, analysis, printing and storage of data. Configure USB communication interface;
4. Freeze-drying process can be controlled: the freeze-drying process is automatically controlled by programmable program, semi-automatic or automatic control can be switched in real time to realize the whole process parameters control;
5. Good water capture efficiency and ability: adopt stainless steel inner winding type water collector, water vapor channel is smooth, material freeze-drying consistency is good;
6. The intermediate medium circulation technology is adopted. Shelf gradient temperature control, uniform plate temperature, strong controllability, flat plate layer, cold heat conduction is good;
7. Double-machine cascade refrigeration technology. Adopting the original imported fully enclosed compressor unit and the international standard green environmental protection cold coal, the refrigeration is rapid, the cold trap temperature is low, the water capture ability is strong;
8. With compressor secondary start-up court protection and pressure overload protection system;
9. The drying room adopts the high pressure resistant, low temperature resistant aviation Asian force material high transparent door, may observe the material freeze-drying change entire process;
10. Shelf silicone oil refrigeration and heating, with temperature, speed adjustable, controllable, achieve in situ pre-freezing and sublimation function;
11. Equipped with negative pressure aeration system interface. The 0.2 μ m filter element is built in to reduce the secondary pollution of the sample and can be backfilled with nitrogen or inert gas.
12. Cold trap has automatic frost function;
13. it can be equipped with clean room installation mode and clean room installation solution.
14. Optional vacuum adjustment function to realize freeze-drying process exploration;
15. Optional eutectic point on-line testing function, better sample sublimation process;
16. Optional computer wireless remote real-time monitoring and chart recording;
Technical indicators:
1. Standard cold temperature (no-load): ≤ -80 ℃ (ambient temperature ≤ 30 ℃)
2, minimum cold temperature (no-load): ≤ -83 ℃ (ambient temperature ≤ 25 ℃)
Optional accessories:
Vacuum adjustment, imported vacuum pump, high speed vacuum pump oil, vacuum pump inlet dust filter, vacuum pump vent oil mist filter
Inert gas inflatable interface, eutectic point tester
The advantages of vacuum freeze drying:
First, freeze-drying takes place at low temperatures, so it is particularly suitable for many thermosensitive substances. No denaturation or loss of biological activity occurs, such as proteins or microbes. Therefore, it is widely used in medicine.
Second, when dried at low temperature, the loss of some volatile components in the substances is very small, suitable for some chemicals, medicines and food drying.
Thirdly, the growth of microorganism and the function of enzyme can not be carried out during freeze-drying, so it can keep the original character.
Fourth, because of drying under the freezing state, the volume is almost unchanged, keeping the original structure, and the phenomenon of concentration will not occur.
Fifth, the dry material is porous and spongy, dissolved quickly and completely after adding water, and almost immediately restored the original character.
Sixth, since drying takes place in a vacuum and oxygen is scarce, some easily oxidized substances are protected.
Seventh, drying can exclude more than 95-99% of water, so that the dried products can be preserved for a long time without deterioration.
Therefore , freeze drying is currently being widely used in the pharmaceutical industry , the food industry , scientific research and other sectors .
Vavcuum Freeze Dryer for Fruit Vegetable, seafood, powder, meat, medical .
Scope of application:
Food industry: vacuum freeze-drying technology can be used for drying fruits and vegetables, meat and poultry, aquatic products, seasoning, convenience food and famous specialty products. It can keep the original color, fragrance, taste, shape and freshness of food unchanged. The finished product is easy to store and transport, the cost is reduced, and the shelf life is extended.
Nutrition and health care: in dried bird's nest, abalone, royal jelly, ginseng, turtle, earthworm and other nutritional health products, vacuum freeze-drying technology is used to make people believe that the nutrient is pure and natural.
Pharmaceutical industry: vacuum freeze-drying can be used in serum, plasma, vaccines, enzymes, antibiotics, hormones and other Chinese and western medicine dehydration and preservation. Biological research: blood, bacteria, artery, bone, skin, cornea, nerve tissue and various organs are preserved by vacuum freeze-drying technique.
For example, in the manufacture of spaceflight insulating ceramics, preservation of wood and silk products in archaeology, specimen making, preparation of special materials and so on, unique effects can be obtained.
Principle of freeze-drying machine
Drying is one of the ways to keep matter from spoilage. There are many methods of drying, such as drying, boiling, drying, spray drying and vacuum drying. However, these drying methods are carried out at temperatures above 0 ℃ or above. The dried products are usually reduced in size, hardened in texture, oxidized in some substances, mostly lost in volatile components, and denatured in some thermosensitive substances, such as proteins and vitamins. Microorganisms will lose biological activity, dried substances are not easy to dissolve in water and so on. As a result, the product after drying is different from that before drying. Freeze-drying The method is different from the above drying method. The drying of the product is basically carried out at a temperature below 0 ℃, that is, when the product is frozen, until the later stage, in order to further reduce the residual water content of the product, To allow the product to rise above 0 ℃ temperature, but generally do not exceed 50 ℃.
Freeze-drying is to freeze a large amount of moisture in advance and freeze it into a solid, and then sublimate the water vapor directly in a vacuum, while the material itself remains in the ice shelf when it is frozen. Therefore, the porous volume is not changed after drying. In order to increase the sublimation speed and shorten the drying time, it is necessary to heat the product properly. The whole drying takes place at lower temperatures.
The matter is always in low temperature (freezing state) before drying, and ice crystal distributes uniformly in the matter, and the condensation phenomenon will not occur in the sublimation process because of dehydration, thus avoiding the side effects such as foam and oxidation produced by water vapor. Dry matter is dry sponge porous, the volume is basically unchanged, easy to dissolve in water and restore to its original state. To prevent the physical, chemical and biological denaturation of dry substances to the greatest extent possible.
Vacuum freeze - drying machine is widely used in the fruit and vegetable meat food industry . With the increasing level of food safety requirements , people choose the psychological enhancement of the safety food , do not add any preservative , and the most freeze - dried food is bound to become a trend .
Vavcuum Freeze Dryer for Fruit Vegetable, seafood, powder, meat, medical
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