Centrifugal type film evaporator

Abstract

The invention relates to a centrifugal thin film evaporator for fluid even distribution in fluid film for evaporation and condensation, comprising the evaporation device that is made of outer sleeve, the sleeve inside the outer one, and a set of evaporation bodies inside the barrel cavity of the inner sleeve, with a control part for it at the uppermost of the evaporation bodies and mating with the inner sleeve. The space between adjacent evaporation bodies is evaporation cavities. It can ensure cleanness, with deliberate changeover, free from influence due to material change, with good efficiency, and energy saving effect.

Description

technical field [0001] The invention relates to a centrifugal thin-film evaporator, which is used for distributing liquid into a uniform liquid film for evaporating or concentrating, and is used in industries such as Chinese and Western medicine, food, light industry, petrochemical industry, and environmental protection. Background technique [0002] The centrifugal thin film evaporator has a short evaporation time, and the evaporation process can be completed in only 1 second or even less than 1 second, so as to ensure that the extract remains unchanged in its original state. Due to the large amount of materials, some natural pigments such as wolfberry pigment, lycopene, and carotene are very heat-sensitive. When the temperature is high and the time is long, the properties will change, and the quality will be affected if it is mild, and the material will be scrapped if it is serious. , so vacuuming is used to reduce the boiling point temperature of the solvent during extrac...

AI Technical Summary

Problems solved by technology

[0003] However, because the existing thin film evaporator does not have the centrifugal effect, it only relies on the gravity of the material to form a liquid film, so the liquid film is thicker and has poor uniformity, slow decline, long residence time (long heating time), This will lead to changes in the material; the scraper thin film evaporator with a centrifugal scraper that acts on the liquid film is superior to the aforementioned evaporator that only relies on the gravity of the material

However, during the working process of the scraper, the scraper often rubs against the evaporator, that is, the evaporation film, and the impurities generated by the friction will enter the material, affecting the product quality, and the gap between the scraper and the evaporation film is difficult to maintain. In addition, the scraper needs to consume power, resulting in waste of energy such as electricity consumption

[0004] The existing thin-film evaporator still has a major technical obstacle that is difficult to solve at present, that is, a group of evaporating bodies as the evaporating mechanism are welded and fixed in the inner sleeve, regardless of whether the structure of the evaporating body itself is reasonable or not , because the evaporator and the inner sleeve are welded together, it cannot be disassembled for cleaning, and once a group of evaporators is damaged or one or several evaporators in a group of evaporators are damaged, all the evaporators can only be removed together with the Replace the inner sleeve together

The above structure also has the following problems: First, since the evaporator cannot be removed from the inner sleeve for cleaning, the gluey dirt stubbornly accumulated on the evaporator will gradually increase, which affects the evaporation efficiency of the evaporator and wastes energy. ; Second, because the evaporator cannot be thoroughly cleaned, when the replacement material is put into the evaporator, the original material that has not been completely removed will enter another material that is replaced, thereby affecting the material and reducing quality

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