Design and Experiment of a Banana Straw Crushing and Returning Machine with Rotting Agent Spraying Device
Aiming at the current problems of poor crushing effect,high energy consumption,slow decomposition speed and low degree of decomposition of banana straw after crushing etc.,a banana straw crushing and returning machine with rotting agent spraying device was designed.The straight shaped knife was optimized,the arrangement of knife roller was symmetrical single helix arrangement,the crushing knife axle rotational speed range was 1 500～1 860 r·min-1,the spraying device selected 180 L tank and fan nozzle with spray angle of 90°,single nozzle flow rate was 0.8 L·min-1,and 4 nozzles were fixed to the drug pole at 370 mm intervals.A two-factor,three-level field test and a comparative test was conducted with the forward speed of the machine and the rotational speed of the knife roller as independent variables,and the qualified rate of straw crushing and unevenness of spreading as dependent variables.The results showed that the machine forward speed was 1.4 m·s-1 and the knife roller rotational speed was 1 860 r·min-1,and the qualified rate of banana straw crushing was 93.08％and the unevenness of spreading was 12.11％.This device realized the joint operation of banana straw crushing and rotting,which not only improved the crushing effect of straw but also promoted the decomposition of straw organic matter compared with the previous generation of machines,and provided technical references for the research of the subsequent banana straw rotting and field returning machine.
万方数据
维普
