For the drying technology, there are three goals that are recognized by scholars. That is, the drying operation must ensure the product quality; the drying operation does not cause pollution to the environment; and the dry energy-saving research. Chinese scholars have made a lot of achievements in the research of drying technology.
Institute of Engineering Physics, Chinese Academy of Sciences Researcher Liu Dengji studied ultra-rapid heat and mass transfer at the micro-time scale and high heat flux density. The existence of non-Fourier conduction (non-equilibrium) effects was verified by experiments, and the non-future was first proposed. The influence of the thermal effect of the inner leaf and the non-Fick diffusion effect on the drying process, and a comprehensive study of the non-steady state drying process in the multi-layer fluidized bed drying and the colliding flow dryer were conducted. In addition, theoretical and experimental investigations have been carried out on the drying of collided flow in vertical and semi-rings and their combinations.
Professor Wang Xizhong of the Drying Engineering Research Department of Dalian University of Technology is one of the famous spray drying experts in China. He and his colleagues Professor Wang Baohe and Professor Yu Caiyuan conducted extensive research on spray drying industrial installations in China and designed the largest installation. Years can reach 10000t. Research on microencapsulation technology of phospholipid oil and lycopene, electrostatic atomization technology, supercritical drying, and nano powder drying are all in the leading position in China.
Prof. Xu Chenghai of Northeastern University is a domestic freeze-drying expert. In recent years, he has developed continuous vacuum drying equipment and continuous vacuum freeze-drying equipment. It can freeze-dried living bacteria, live poison, skin, bone, cornea and other biological products. Significance.
Dr. Dong Tieyou from Henan University of Science and Technology, for the first time, proposed the microwave energy distribution in the microwave dry room. It should be based on the theoretical method of determining the radiation energy distribution of the antenna. Through the research on the energy reflection characteristics of microwave dry room under typical loading conditions and the microwave dry technical problems of rice, we obtained data that have important reference value for practical applications: using microwave freeze-drying technology, creatively studied the Chinese food dishes. Processing technology and basic process parameters.
The drying equipment industry should strengthen the research on automation, manufacturing processes, and materials and materials design in the direction of technology, learn advanced foreign technologies, and allow companies to directly associate with these universities and research institutes in various forms to make enterprises become technological innovations. The main body will make China's drying equipment industry bigger and stronger, and strive to occupy an important position in the international arena.
Plasma cutting is a processing method that uses the heat of a high temperature plasma arc to partially or partially melt (and evaporate) a metal portion at a workpiece cut and to remove the molten metal by high-speed plasma momentum to form a slit.
1. The frame adopts all-welded structure, which is firm and reasonable, easy to operate and durable.
2. Cutting speed and high precision. The cutting mouth is small, neat and has no slag. On the basis of the traditional numerical control system, the control method for cutting is improved, and the secondary dressing processing is avoided.
3. Suitable for low carbon steel, copper, iron, aluminum, galvanized, titanium and other metal plates.
4. The CNC system configuration is high. Automatic arc ignition, stable performance, the success rate of arc ignition is more than 99%.
5. Support standard G code path files generated by software such as Wentai, Beihanger, ARTCAM, Type3, etc. The control system uses U disk to exchange processing files, which is convenient and quick to operate.
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