In order to ensure the Chinese herb's taste and active ingredients, China Drying Network properly drys the Chinese herbal medicines under manual control conditions, including passing, convection, radiation, or heating in a high-frequency electric field in an atmospheric or reduced pressure environment. Drying to promote moisture evaporation, to achieve the required moisture content, maintain a good product quality, easy packaging, storage, transportation. However, at present, the domestic drying process of traditional Chinese medicine manufacturers generally has the phenomenon that the temperature of the drying process is high and the loss of active ingredients is serious. In addition, there are problems such as unreasonable drying process and equipment design, excessive energy consumption, and so on.
The modernization of modern Chinese medicine has become a strategic development plan for China's economic development. To realize the modernization of traditional Chinese medicine production, traditional Chinese medicine production techniques must be scientifically and rationally inherited. At the same time, the most reasonable drying methods and techniques should be developed according to the characteristics of different traditional Chinese medicines. Drying of Chinese herbal medicines in China will surely become more standardized, legalized, standardized, and establish a post-harvest drying system for Chinese herbal medicine that is in line with China's national conditions.
Chinese herbal medicine drying machine principle
For the drying of Chinese medicinal materials, a belt dryer is generally used in tandem to form an initial dry section, an intermediate section, and a final dry section. In the early dry section, due to the high moisture content of the material and poor air permeability, thin sheet thicknesses, faster operating speeds, and higher drying temperatures were used. If the temperature of the material does not exceed 60 °C, the temperature of the dry gas in the initial dry section may be higher than 120 °C; the material residence time in the final dry section is 3-6 times that of the initial dry section, and the thickness of the material is the initial dry 2-4 times of the section, for the material temperature does not exceed 60 °C, can use about 80 °C dry gas. Using a multi-segment combination belt dryer, the belt drying performance can be better exerted to make the drying more uniform.
Chinese herbal medicine drying machine features
1 The air quantity, heating temperature, material residence time and feeding speed can be adjusted to achieve the best drying effect.
2 The equipment can be configured flexibly, and the mesh belt flushing system and the material cooling system can be used.
3 Most of the air recycling, highly energy-saving.
4 The unique air distribution device makes the distribution of hot air more uniform and ensures the consistency of product quality.
5 heat source can be steam, heat transfer oil, electric or coal-fired (oil) stove
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