Vacuum Freeze Dry Machine
Vacuum freeze dryer
Vacuum freeze dryer is a very good drying equipment, dry matter under sealed conditions, without additives at room temperature can be stored for a long time. The structure of freeze-dried articles is porous and crisp, and it rehydrates quickly when used. The color, aroma, taste, shape and activity of the articles after rehydrating are basically unchanged. The vacuum freeze-drying machine is more suitable for health care products, food and medicine industries. Vacuum freeze dryer is very common in our daily life, but many people are not very clear about the specific use of vacuum freeze dryer, and they are not very aware of the matters needing attention for vacuum freeze dryer. Let's go to a more comprehensive understanding of vacuum freeze dryer.
Matters needing attention in the use of vacuum freeze dryer are as follows:
1. The sample prepared by vacuum freeze-drying mechanism should expand its surface area as much as possible, which shall not contain acid and base substances and volatile organic solvents;
2.the article must be completely frozen into ice, if there is residual liquid, it is easy to cause gasification jet;
3. Note that the cold trap of the vacuum freeze dryer is about minus 65 degrees, so it can be used as a low-temperature refrigerator, but it must wear insulation gloves to prevent frostbite;
4. Before starting the vacuum pump, check whether the charging valve is closed, whether the outlet valve is tightened, whether the contact surface between the plexiglass cover and the rubber ring is clean and free of dirt, and whether it is well sealed;
5. Under normal circumstances, the vacuum freeze dryer shall not be used for more than 48 hours continuously;
6. the sample in the freezing process, the temperature will gradually reduce, you can take out the sample warming for a period of time, then continue to dry, which can shorten the drying time.
Parameter:
Model | KFD-20 | KFD-25 | KFD-30 | KFD-50 | KFD-100 |
Tray area(m²) | 20 | 25 | 30 | 50 | 100 |
Input capacity(kg/batch) | 200 | 250 | 300 | 500 | 1000 |
Min. cold trap temperature(℃) | <-45℃ | <-45℃ | <-45℃ | <-45℃ | <-45℃ |
Vacuum degree(pa) | <10pa | <10pa | <10pa | <10pa | <10pa |
Tray temp. | -35~+100℃ | -35~+100℃ | -35~+100℃ | -35~+100℃ | -35~+100℃ |
Tray quantity | 18 | 22 | 18 | 28 | 36 |
Tray Size(mm) | 2200x600 | 2200x600 | 3300x600 | 3300x600 | 5000x600 |
Cooling method | Water cooled | Water cooled | Water cooled | Water cooled | Water cooled |
Total power(kw) | 45 | 50 | 60 | 100 | 180 |
Total weight(kg) | 8000 | 9000 | 11000 | 20000 | 40000 |
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