Application of Double-layer Roll Screening Cracking System in"Lowering and Lifting"of Blade Structure in Rebaking
In order to obtain reasonable structure and size of tobacco in threshing and redrying production,a double-layer roller screening and cracking system was designed.The system is composed of belt conveyor,vibrating conveyor and double-layer roller screening and cracking e-quipment.Loose and thin materials through belt conveyor and vibrating conveyor to improve screening efficiency;The roll screening and crack-ing equipment is used to cut the tobacco to reduce the area of tobacco and screen out the large,medium and small sized tobacco.Taking C3F flue-cured tobacco leaves of a tobacco factory as the object,six screening and cracking experiments were carried out.The results showed that the percentage of large pieces(＞25.40 mm)decreased by 11.92%after being treated by roller screening and cracking system;the middle slice rate(6.35-25.40 mm)increased by 9.60%;the fraction of small pieces(2.36-6.35 mm)increased by 2.11%,and the fraction(＜2.36 mm)increased by 0.29%.
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