Design and Testing of a Pneumatic Oscillating Chinese Wolfberry Harvester

A pneumatic oscillating Chinese wolfberry harvester was designed to improve the efficiency of manual harvesting and minimize fruit damage by mechanical harvesting. The shedding model under forces established based on kinetic analysis, flow field characteristics were investigated using computational fluid dynamics (CFD). position shape fan outlet determined comparing effects a linear reduction Laval airflow rate. size mechanism optimized with nonlinear constraints achieve uniform oscillation airflow. three-factor, three-level orthogonal test conducted NingQi 7 variety. rate at outlet, frequency, distance factors, net ripe fruits, green fruits indices. results showed that 85.21% an 10 cm, 70 m·s−1, frequency 2 Hz. This study provides references for design harvesters wolfberry.