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The traditional medicine drying machine uses coal as fuel for combustion to generate clean hot air as a drying medium to absorb the moisture in the Chinese medicine, drain out the moist air that reaches a certain amount of moisture, and circulate back and forth to reach the moisture required by the traditional Chinese medicine. The characteristics are time-consuming, laborious, unable to fully meet the requirements for medicinal drying, and poor sterilizing properties, coupled with the use of coal as fuel to pollute the environment.
In recent years, with the continuous advancement of the environmental protection industry, the emergence of new drying process technology has become very necessary. The appearance of microwave technology satisfactorily met the requirements for drying and drying medicinal herbs, and coincided with the prevailing theme of environmental protection.
According to experts, microwave drying is different from traditional drying methods in that the direction of heat conduction is the same as the direction of moisture diffusion. Compared with the traditional drying method, microwave drying has the advantages of large drying rate, energy saving, high production efficiency, uniform drying, clean production, easy realization of automatic control and improvement of product quality, etc. Therefore, microwave drying has received increasing attention in various fields of drying.
In the 1960s, a great deal of research was conducted abroad on the application and theory of microwave drying technology. In recent decades, it has been further developed. Compared with foreign countries, although the development of microwave drying technology in China is relatively late, it has also achieved good results in recent years, and there are many research and application results. However, the application research field of microwave drying technology is relatively narrow, mostly staying at the experimental stage or small-scale production. At the stage, the research of composite microwave drying technology needs to be expanded. The theoretical research of mass transfer and heat transfer in microwave drying is not enough. The development of equipment and instruments supporting microwave drying technology needs to be strengthened.
According to experts, microwave medicine drying equipment is a Chinese herbal medicine drying treatment equipment developed by using microwave drying technology. It can retain the effective drug ingredients in Chinese herbal medicines to the maximum extent, and at the same time, it can kill all kinds of molds and eggs in medicinal materials to prevent mildew and insect infestation during storage. In addition, since the microwave heating is to make the object to be heated itself a heating element, it is called an integral heating method and does not require a heat conduction process, so that uniform heating can be achieved in a short time. This feature allows the material with poor heat conduction to be heated and dried in a short time, the energy utilization rate is improved, and the size of the heating furnace can also be made smaller than the conventional heating furnace. Microwave medicine drying equipment has been popular in the market in recent years, and many drying equipment manufacturers have invested in microwave technology research and development, trying to snatch a market place.
The upgrading of drying equipment can not be separated from the promotion of drying technology, but also the performance of the pharmaceutical machine industry. Microwave drying machine can be said to be a good embodiment of the entire drying industry in the market application, so that people understand and clearly realize the microwave Broad technological development prospects. With the development of the times, there will be more problems waiting for the pharmaceutical industry to break through in the future. How to improve the microwave drying technology and improve the product quality is an urgent issue to be studied.
♦ High strength and stiffness
♦ High impact and notch impact strength
♦ High heat deflection temperature
♦ Good at dampening
♦ Good abrasion resistance
♦ Low coefficient of friction
♦ Good chemical stability against organic solvents and fuels
♦ Excellent electrical properties, ease of printing and dyeing
♦ Food safe, noise reduction
♦ Poor dimension stability, electrical and mechanical properties may become affected by absorbing moisture or water
♦ Poor acidproof ability, can`t dye with acid or touch overmuch acid
♦ Poor lightfastness, poor endurance in pollution
Environmental protection concept popular microwave drying technology has unlimited potential
With the acceleration of the production of modern society, the development of the food and drug industry is also accelerating. In the Chinese herbal medicine industry, drying of herbs is a crucial step, which helps to ensure that the herbs are not attacked by insects and corrosion. In recent years, due to the great advantages of microwave drying technology, the demand for microwave drying equipment in the Chinese medicine industry is also increasing.