大宗茶鲜叶原料分级机的研制与实验

Development and experiment of the grading machine for ordinary tea leaf material

机采大宗茶鲜叶长短不一、老嫩不同,以此为原料制得的茶叶品质较低,为此研制了一种新型的抛掷式大宗茶鲜叶分级机,该机由分级槽体、传动机构、摇杆和机架等部分组成,通过抛掷的方式对茶鲜叶进行分级。结果表明,使用第二批次茶鲜叶进行分级,投叶量为5kg/min、振动频率为50Hz时,分级机的平均分净率最高,达79.04%,挂网率为3.60%。可见,该机能较好地实现机采大宗茶鲜叶的分级。

Machine-plucked tea possessed different lengths and with varied tenderness, such material would surely result in poor tea quality.To solve this problem, a new grading machine which worked according to the casting principle was developed. It was composed of a classification trough, a power transmission line, a rocker and a frame.The results showed that when the second batch of fresh leaf material was treated, and with a feed rate 5kg/min and vibration frequency 50Hz,the average classification rate was as high as 79.04%, and materials caught in the net was 3.60%.Above all, it was a machine which can effectively realize the classification of the machine- plucked tea leaves.