Design and Experiment of Peanut Sheller with Free Adjustable Sheller Gap
Most of the existing peanut shelling devices use physical hard extrusion structures for operation,which have high mechanical damage rates and poor adaptability to peanut varieties,therefore,a peanut shelling device with freely adjustable shelling gaps has been developed.The upper part of the shelling device is composed of guide rods,guide sleeves,compression springs,etc.,which form a freely adjustable rubbing and swinging arm for the shelling gap.The lower part is fixed with a woven screen mesh,and the arc-shaped chamber composed of the upper and lower devices forms the shelling chamber;the rubbing swing arm driving device is driven by a variable speed motor to drive the crank rocker mechanism for reciprocating rubbing motion.To verify the reliable and stable operation of the freely adjustable gap rubbing arm,the design requirements that it needs to meet were verified.It was determined that when the height to diameter ratio of the elastic device is 3.7 and the allowable safety factor of the spring is 2.6,it meets the operational requirements;the kinematic and mechanical analysis was conducted on the design parameters and shelling motion state of the crank rocker mechanism.It was determined that when the angle between the rocker and the vertical direction is 40 ° and the spring compression stroke is 12 mm,the spring device can withstand a maximum load of 710 N,which can meet the requirements of reciprocating rubbing kinematics and shelling mechanics.Finally,the speed of the variable speed motor,which has a significant impact on the shelling performance of the device,was taken as the experimental factor,and the shelling performance experiment was conducted on Yuhua 22.The results show that when the motor speed is 1 600 r·min-1,the shelling rate is 98.6%,the damage rate is 2.4%,and the germination rate is 98.8%,which meets the quality requirements for peanut shelling in the industry.
free adjustable gapshelling devicestructural design analysisexperimental study
国家科技期刊平台
NSTL
万方数据
维普
