The crushing process of solid drugs is generally the use of external mechanical force to partially destroy the cohesion between the molecules of the substance, so that the large particles of the drug become small particles, the surface area increases, that is, the process of converting mechanical energy into surface energy. The crushing of oily Chinese medicine is complex, and contains a certain amount of water (generally about 9%-16%), with toughness, the less water contained, the more brittle the medicinal materials, the more conducive to crushing, so it should be properly dried according to its characteristics before crushing. Herbs with parenchyma, such as flowers, leaves and some roots, are easily crushed. Wood long keratin structure of medicinal materials, containing viscous or oily large medicinal materials and animal sinew, bone, nail is not easy to crush, can choose the wind selected Chinese medicine crusher. Some Chinese medicine oil is strong, easy to stick to the crusher and sieve when crushed, so that the herbs are difficult to pass through the sieve, although it can be crushed with other herbs, but easy to stick to the crusher, screening difficult. Shredder Easy bonding shredder. When dealing with drugs containing raw materials, we often use the following two methods to achieve satisfactory results.
First, cut the raw land into 2 to 4 mm thick pieces, put them into a suitable container, and then pour an appropriate amount of water about 100 degree C into the container of medicine. When the medicine is thoroughly permeable, take it out, put it into a grinding tank and grind it into mud. Then add other Chinese herbs that are crushed into coarse powder and grind it into pieces. After drying at low temperature (below 60 degree ), grind it to the required fineness.
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