Microwave applications before drying tobacco problems and improvement measures
    1 microwave dryer shape and structure
    Different shapes, different structures microwave drier different results . Microwave dryer process manufacturing capability must flow throughout the manufacturing process to match the thread , but must also consider the microwave tobacco can not spread too thick , otherwise it will affect the tobacco on the microwave energy absorption.
    2 microwave radiation losses
    I plant a microwave machine original microwave emission direction substantially parallel with the direction of tobacco , to go through multiple reflections to reach tobacco. Thus, the microwave energy in the process of multiple reflection loss occurred , affecting the expansion of tobacco drying effect . To this end we have carried out improvements in the microwave machine plus home a 45 ! Corner reflector , the microwave can be reached through a reflective material , greatly improving the expansion of tobacco drying effect , fill value representing an increase of about 0 before improvement . 1cm3 / g.
    3 Feed water issues
    Since water has a high relative permittivity , tobacco excess free water contained in the tobacco affects the absorption of microwave energy . Typically, when tobacco at low humidity content easily through the microwave , and inhibition of the material warming. If the initial moisture content is too high, the drying was carried out very quickly, is not conducive to drying silk machine feed water control . Before and after the analysis of the microwave drying tobacco moisture loss situation, we have microwave drying tobacco feed water were adjusted before the increase in HT sprinkler ,
Enter the HT before the moisture content of tobacco on the basis of the original increase of 2.3% ~ 2.7% . By taking this measure, not only improve the effect of the expansion of tobacco and tobacco drying machine can meet the entrance requirements of the moisture content of tobacco .
    4 microwave radiation leak
    Microwave radiation on human health has some damage , so the use of microwave drying, how to prevent microwave radiation leakage problem is the first issue to be considered . Microwave Equipment Co., Ltd. , Dongguan Qi Association in the microwave device itself has been installed to prevent leakage of microwave energy
Shield outside , but also in the inlet and outlet and the surrounding set shield, protective nets to shield , solved the problem of radiation leak .
    Microwave drying for the expansion of tobacco with certain effects , especially in the former improved microwave drying equipment , the tobacco filling is worth to be further improved . We believe that in the microwave equipment manufacturers and tobacco joint efforts of researchers , microwave drying at no loss to improve performance and energy efficiency of tobacco filler , tar and other aspects will have greater expansion