Multi layer tunnel drying and sterilization machine

Advantages of Multi Layer Tunnel Drying and Sterilization Machine
⑴ Microwave heating of drugs is rapid and uniform, with fast drying speed and short time. Due to heating inside the wet material, the direction of heat transfer is consistent with the direction of moisture transfer. Moisture diffuses from the center of the material to both sides, and the distance is twice as short as conduction heating, which is beneficial for improving the drying rate of the material and shortening the drying time. Due to the direct absorption of moisture by microwave energy, both the internal and surface moisture of the material can be heated by microwave simultaneously, resulting in uniform heating and short drying time, without affecting the color, aroma, and tissue structure of the dried material. For example, when drying the moisture content from 80% to 20%, it takes 20 hours to dry with hot air, while microwave drying only takes 2 hours. Another example is to use the traditional drying room to dry 400-500kg pills. It takes about 20h for water pills and 6h for honey pills on average. However, using microwave heating to dry water pills takes only 4-5h and 1h for honey pills. When drying ass hide glue, the original process takes at least 20d, while the microwave process takes only 7d. It also has a certain puffing effect, which is more conducive to human absorption.
⑵ Selective heating, low drying temperature, clean product, good drying and sterilization effect, high quality. In microwave drying, different substances have varying abilities to absorb microwaves. Among them, moisture has a greater absorption capacity than some other solid materials. Therefore, using microwaves is particularly advantageous for drying water containing materials. Moisture in wet materials gains more energy and quickly vaporizes, while solid materials do not increase in temperature due to their low microwave absorption ability. And it also has sterilization and insecticidal effects while drying, thereby improving product quality. The obtained finished product has a uniform moisture content, is clean and sterile, and has no crust, wrinkles or cracks on the surface. The drying effect is ideal. After microwave treatment, the bacterial count of the pills decreased by 78% to 99% compared to untreated ones, and by 15% to 90% compared to oven treated ones. Microwave sterilization of drugs at low temperatures generally takes only a few seconds to a few minutes, and the drying temperature is generally below 80 ℃. The main components are basically not affected, which can ensure the efficacy. The UV absorption spectrum and fluorescence spectrum of Chicken Bone Grass Pill granules before and after microwave sterilization are basically consistent, indicating that microwave drying has no significant effect on the main components of the drug. For example, many oral liquids contain nutrients. Although they meet the requirements of hygiene inspection after high-temperature sterilization, most of them also destroy the nutritional components, which are prone to precipitation and have a strong bitter taste. By using microwave processing, the original nutritional components can be preserved, the taste is good, the color is clear, there is no precipitation, and the sterilization effect is good.
⑶ Low energy consumption and cost. Due to the direct production of heat inside the wet material, there is less heat loss and high thermal efficiency, generally reaching around 80%. If using electric heating to dry a certain material consumes 100KW, while using microwave drying to dry the same amount and humidity of material consumes 20KW to achieve the same degree of drying. Microwave energy consumption accounts for only one-third of traditional steam and oven energy consumption, saving a lot of energy and reducing production costs.
⑷ Good environment, microwave processing without environmental and noise pollution, no stuffy high temperature and steam diffusion in the processing workshop, greatly improving the working environment of workers.
The multi-layer tunnel drying and sterilization machine is easy to operate and has high production efficiency. Microwave treatment of drugs can be operated continuously, improving production efficiency and facilitating automated production and enterprise management. Improved working environment and conditions, with convenient equipment operation and sensitive control. Because microwaves are converted from electrical energy, heat is generated when the power is turned on for drying. When the power is turned off, the heat source immediately disappears. No preheating required and no residual heat. Moreover, microwave equipment has a compact structure, occupies a small area, and reduces supporting facilities.
Based on the above characteristics, microwave technology is particularly advantageous for drying water containing materials. Microwave technology can be used for dehydration drying, insecticidal and preservative treatment, sterilization and other processing of Chinese medicinal materials, pills, tablets, and powder and granular preparations. It not only dries quickly and efficiently, but also improves product quality and facilitates the storage and preservation of drugs. But it is not suitable for drying heat sensitive materials.
Multi layer Tunnel Drying and Sterilization Machine Product Display