7 standards when installing -18 °C fish cold storage
General management requirements for frozen fish storage and preservation of aquatic products:
The function of the frozen fish cold storage refrigeration compressor is to let the cold storage cool down rapidly. It should have excellent performance, simple and convenient operation, and low failure rate. The cooling fan adopts the basic ceiling type cooling fan, which can reduce the occupied volume in the warehouse and solve the problem of system oil return, so that the unit can work normally and has a long service life.
The air cooler can maintain the heat preservation, ventilation and eliminate the turbidity to better preserve the stored items.
The automatic control device is designed to ensure the sensitivity of the refrigeration system adjustment and the reliability in the use of the cold storage.
The electric control system performs electric temperature control, and has an electric defrosting final temperature control. An electric control system can electrically control a plurality of storage bodies. More frozen fish cold storage construction, cold storage engineering design Xueyi refrigeration! 7 standards when installing -18 °C fish cold storage
7 standards for the construction of -18 °C frozen fish cold storage:
1. The frozen fish cold storage is rationally operated, giving full play to the large effect of the quick freezing cold storage cooling equipment, effectively shortening the time of frozen frozen cold storage frozen aquatic products.
2. The frozen fish cold storage is a frozen fish cold storage. The frozen fish cold storage design freezes at a temperature below -18 °C, and the high temperature cold storage cold storage design temperature is almost 0 °C. The temperature in the cold storage must be kept even and stable, and there should not be too Large fluctuations, otherwise directly affect the quality of the storage.
3. Frozen fish cold storage in the storage of aquatic products, there is a requirement that the Zui is stored in the warehouse once, and the goods that have not been frozen and frozen can not be directly stored in the frozen fish cold storage. When the aquatic products that need to be frozen into the frozen fish stocks have risen above -8 °C in their central temperature, such conditions must be re-entered into the frozen cold storage for freezing before they can be stored in the frozen fish cold storage.
4. When the frozen cold storage is in operation, it is necessary to strengthen and maintain the thermal insulation facilities, reduce the amount of heat into the cold storage, minimize the opening time of the workers entering the cold storage work, turn off the lights when entering and leaving the cold storage, and freeze the fish cold storage. The door must be closed.
5. When the frozen fish cold storage is to be stored in the aquatic products, the storage and storage items in the cold storage must be tight, so as to keep the cold storage in the full storage state. Packaged and unpackaged aquatic goods cannot be stored in one cold storage at the same time. When stacking aquatic products, be sure to use the planks to separate the goods from the ground. It is not advisable to dump the goods directly on the ground. 7 standards when installing -18 °C fish cold storage
6. When storing frozen goods in the frozen fish cold storage, you must carefully record the time, type, grade, quantity and so on. Grasp the safe and fresh storage time of fresh storage and operate in a first-in, first-out manner. When the temperature of the frozen fish cold storage is -18 °C, the storage time of the frozen storage goods is generally 6-9 months. If you find that there is a failure, the phenomenon of deterioration should be dealt with promptly, so as not to affect other items.
7. In the frozen fish cold storage, it is strictly forbidden to deteriorate and have odor, and aquatic products that do not meet the quality requirements are stored.
If you need to design and install a cold storage in the near future, Xueyi Refrigeration:
Low Content Monomer
Low content monomer plant extract, main content 1%-50%. Including but not limited to Pu-erh tea extract 40%, rhodiola rosea extract 1%, 3%, pueraria root extract 30%, 40%, celery extract 5%, salvia miltiorrhiza extract 5%, 10%, burdock seed extract, salicin 5%, aloe vera extract, gynost' pentaphyllum extract 20%, green tea extract, ginseng extract, chlorogenic acid extract.
Plant extraction process
1. Select plants/herbs. No more than ancient prescriptions, prescriptions, folk herbs to find. At present, common and uncommon herbs have been studied. At present, it is mostly to increase the amount of medicinal materials to extract and separate components with low content, or to find medicinal plants that have never been studied from miao medicine, Tibetan medicine, Mongolian medicine, Africa, Latin America and other places.
2. The extraction. Solvent petroleum ether, n-hexane, cyclohexane, benzene, chloroform, ethyl acetate, n-butanol, acetone, ethanol, methanol, water (low polarity → high polarity). Daily medicine decoction effective, water and ethanol and other solvents with large polarity, such as artemisinin boiling ineffective extraction with petroleum ether and other solvents with small polarity. Common medicinal materials water/alcohol/ether to go through, separation and identification of more compounds.
3. The separation. This is the most important work. In the solution extracted from the second step, there are dozens of compounds, usually by column chromatography, which is often referred to as the column flushing. It's a lot of work, it's boring, it's low tech. A master's student might do this every day for two years. The column for separating compounds, as shown below, is as large as 2 meters high and as small as 10 centimeters. Change the solvent condition of mobile phase, change the material of column, different conditions and different separation principles of column repeatedly punching, can be separated from the monomer compound.
Low Content Monomer,Rhodiola Rosea Extract,Kudzu Root Extract,Herbal Extract Apigenin
Shaanxi HuiKe Botanical Development Co.,Ltd , https://www.oasis-hk.com
