The practice of storage of Chinese herbal medicine warehouses has proved that if the water content of Chinese herbal medicines is controlled within certain limits under certain conditions, the quality will not mutate. For example, at a temperature of 30°C in the north, the water content of red dates is controlled at 12%-17%, Codonopsis 11%-16%, bitter almond 6%-8%, Beishaginseng 12%-15%, and Astragalus 11%-14. % isochronism, there will be no change in the active ingredients during the storage process. This is the so-called "safe moisture" of Chinese herbal medicines. It refers to the critical moisture content that can be safely stored under certain conditions without any variation in quality. . Therefore, the harvested and processed Chinese herbal medicines must be dried to the safe moisture limit in time in order to ensure the quality of Chinese herbal medicines.
Concentric Reduver, Eccentric Reducer
Material
Carbon Steel like A234 WPB, 20G, A105, Q235A/B and alloy steel like ASTM A234 WP5, WP11, WP12
Executive Standard
ASME B 16.9, DIN, JIS, BS, etc
Size
1/2"-24"
Wall Thickness
SCH10~SCH160, STD, XS, XXS
Type
Seamless
Welding Method
Butt Welding
Surface Treatment
grit blasting, black or transparent painting or according to the requirement of client
Packing
Dyrable wooden pallet or wooden case or according to the requirement of client
Stainless Steel Reducer, Carbon Steel Reducer, Butt-Weld Reducer, Stainless Steel Concentric Reducer Cangzhou Weiheng Pipe Industry Co.,Ltd , https://www.czweiheng.com
At present, the commonly used drying techniques for Chinese herbal medicines are as follows:
Sun drying method This is a drying method commonly used for most medicinal herbs. When drying, sunny and windy weather should be selected. The herbs should be thinly spread on the banquet table or on the cement floor. Use daylight lighting, and pay attention to turning in time. Ensure uniform sunlight. After the autumn night, the air has high humidity, and it is necessary to pay attention to retracting and picking up the medicine to prevent it from returning moisture.
Spreading method The method is also called shade dry method, which means that the medicinal materials are placed in the shade of the indoor or greenhouse, and the flowing air is used to blow off the water to achieve the purpose of drying. This method is often used in rainy weather, or used in medicines containing volatile oils and oils that are easy to move and discolor, such as Zaoren, Boziren, Anemarrhena, Bitter Almond, Codonopsis, Asparagus, and Hemp. These medicinal herbs should not be exposed to sunlight, but they can be aired in places where sunlight is not strong or in cool and ventilated shades to avoid oil and deterioration.
Drying method This method is a traditional, simple and economical method of drying herbs. The application of the law must be preceded by one or several rectangular fire pits in a room or a greenhouse. The fire pits have a width of about 1.5 meters. The length can be determined according to the amount of medicinal materials. A small switchable door can be left every 80 centimeters below the fire to add fuel. Then place a stove in it and place an iron plate at the crater of the stove to raise it with fireproof seedlings. Destroy medicinal herbs and disperse calories. When the barrier reaches 1.2-1.5 meters high, a round Steel Pipe with a diameter of 3-4 cm is horizontally placed every 60 cm. A metal wire mesh is laid on the steel pipe, and the wire mesh is covered with mud. Then the fire is removed from the mud. Increase the height by 60 cm. Finally, the stove is lit, and the fire and the covered mud are dried. The herbs are placed in the gutter in accordance with the first and second level, but do not overfill it. The thickness is 30-40 cm, covering the sacks and straws. Wait. When a large amount of steam rises, it is necessary to open the sack or straw curtain in time, and pay attention to flipping up and down the medicinal materials until it is dry. This method is suitable for dryness of medicinal materials such as Chuanxiong, Alisma, and Campanulaceae. Drying process should pay attention to the control of the heat, so as not to coke the medicine, but also according to the nature of the medicine and the degree of desiccation requirements are treated separately, and some herbs should not be dried with drying method.
Drying and Drying Drying Method This method is suitable for large-scale medicinal planting bases, and has high efficiency, labor saving and provincial expenses. It is not limited by the weather, but also has the effect of killing insects and driving molds. The temperature is controllable. It is suitable for all kinds of medicinal materials and does not affect the quality of medicinal materials. It is a kind of advanced drying method. However, it is necessary to pay attention to the construction of drying rooms in accordance with the technical requirements and standards of the specifications, and to purchase special drying equipment related to the medicinal materials to be dried and operated by professionals who are familiar with the drying technology. Also note that the drying temperature and time are controlled according to the different properties of the herbs.
Changzhou Uniform Drying Equipment Co., Ltd. has many years of experience in the production of drying equipment for Chinese herbal medicines. The equipment produced by the company has been widely used in the drying of Chinese herbal medicine tablets and the drying and granulation of Chinese herbal medicine extracts, and has been acquired in the client. Good efficiency.