Design and Experimental Evaluation of a Spiral Feeding Device Based on Friction Characteristics of Wheat Straw  

作　　者：Chen Hai-tao Min Shi-yao Li Long-hai 

机构地区：[1]College of Engineering,Northeast Agricultural University,Harbin 150030,China

出　　处：《Journal of Northeast Agricultural University(English Edition)》2020年第2期144-151,共8页东北农业大学学报（英文版）

基　　金：Supported by Integrated Research and Demonstration of Chemical Fertilizer and Pesticide Reduction Technology for Soybean in Northeast China(2018YFD0201004);Funding from the Construction of Modern Agricultural Industrial Technology System(GARS-04)。

摘　　要：The aims of this study were to achieve working stability and continuity of the straw fibre extruder(D200)to improve the transportation efficiency of pretreated straw materials mulch film.Based on a theoretical analysis of wheat straw friction characteristics and the mechanics model of wheat straw transport,a tilting variable-diameter spiral feeding device matched the designed straw fibre extruder(D200-type).Experimental researches were performed by using the orthogonal test method of the L16(45)to obtain the optimal parameter combination.The spiral angle,the speed of the screw shaft and the moisture content of straw raw materials were selected as influencing factors,and feeding efficiency was selected as the objective indicator.The results showed that the spiral angle,the rotating speed of screw shaft and the moisture content of straw raw materials had very significant effects on the feeding efficiency(p<0.01).The order of the extent of the influence of parameters on the feeding efficiency of wheat straw raw materials from high to low was the moisture content,the spiral angle and the speed of screw shaft.When the maximum transfer efficiency per unit time of the inclined spiral feeding device was 1040.8 kg·h-1,the spiral angle was 40?,the speed of screw shaft was 200 r·min-1 and the moisture content was 65%.Verification experiment proved the feasibility of straw fibre extruder designed.

关 键 词：straw fibre extruder wheat straw feeding device screw conveying orthogonal test 

分 类 号：TH237.1[机械工程—机械制造及自动化]