【摘要】 针对网棚养殖蝗虫的捕集问题,设计了旋风分离式蝗虫吸捕机。使用CFD软件对吸嘴和分离装置的内部气流场进行了数值模拟。样机试验表明:当吸嘴倾角为75°、吸口气流速度为14 m/s、吸嘴距地高度为40 mm、机器前进速度为0.4 m/s时,可以获得较高的吸捕率和较低的破碎率。实际作业时可根据蝗虫分布密度,灵活调节吸口风速和机器前进速度,以提高吸捕效率、降低能耗。更多还原

【Abstract】 To solve the problem of capturing artificial raised locusts in net house,a cyclone locusts capturing machine is designed.By using CFD software Fluent the airflow field in the suction nozzle and separate device is simulated.The test results of the sample machine indicated that when the inclination angle of suction nozzle was 75°,the airflow speed of the suction nozzle was 14 m/s,the distance between the suction nozzle and ground was 40 mm and the forward speed of the capturing machine was 0.4 m/s,high rate capturing and low rate of break up were got.When practically working in locusts artificial raising net house,the airflow speed of the suction nozzle and the forward speed of the capturing machine were adjusted according to the distribution density of locusts on the ground, to improve the capturing efficiency and reduce the energy consumption.更多还原