CAJ | 학술논문

实验研究了影响颗粒在圆形偏心滚筒内运动状态的因素,分析了2种偏心距、4种填充率和4种转速对运动模式的影响.结果表明:转速和填充率是影响颗粒在圆形偏心滚筒内运动模式变化的主要因素,偏心距对其基本没有影响;当转速为15r/min和25r/min时,填充率不会影响颗粒的运动模式;而在转速为5r/min时,颗粒运动模式随填充率由1/6增大到1/3,相应由阶梯模式变为滚动模式;在转速为40r/min时,颗粒运动模式随填充率由1/6增大到1/3,相应由滚动模式变为小瀑布模式;偏心距越大,颗粒在运动过程中产生的涡心越偏离滚筒中心;转速的增加使颗粒群的上表面和下落层两端的弧度发生变化;填充率对颗粒在圆形偏心滚筒中的运动模式的影响只发生在低转速和高转速下.
실험연구료영향과립재원형편심곤통내운동상태적인소,분석료2충편심거、4충전충솔화4충전속대운동모식적영향.결과표명:전속화전충솔시영향과립재원형편심곤통내운동모식변화적주요인소,편심거대기기본몰유영향;당전속위15r/min화25r/min시,전충솔불회영향과립적운동모식;이재전속위5r/min시,과립운동모식수전충솔유1/6증대도1/3,상응유계제모식변위곤동모식;재전속위40r/min시,과립운동모식수전충솔유1/6증대도1/3,상응유곤동모식변위소폭포모식;편심거월대,과립재운동과정중산생적와심월편리곤통중심;전속적증가사과립군적상표면화하락층량단적호도발생변화;전충솔대과립재원형편심곤통중적운동모식적영향지발생재저전속화고전속하.
Experiments were conducted to study the factors which affect motion state of particles in a circular eccentric drum,and the effects of two offsets,four filling rates and four rotating speeds on the motion model were analyzed. Rotating speed and filling rate were the main factors affecting the change of the motion model of particles in a circular eccentric drum,while offset had no effect. Filling rate did not have an impact on the motion model of particles at rotating speed of 15r/min and 25r/min. But when rotating speed was 5r/min,the motion model of particles varied from slumping mode to rolling mode accordingly when filling rate increased from 1/6 to 1/3,and when rotating speed was 40r/min, the motion model of particles varied from rolling mode to cascading mode accordingly when filling rate increased from 1/6 to 1/3. With increasing offset,vortex core generated in the process of movement deviated more from the center of the drum. Increasing rotating speed resulted in the change of the upper surface of particle group and the arc of the falling particle group on both ends. The effect of filling rate on the motion model of particles occurred only at low and high rotating speeds.