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首页> 外文会议>2004 CIGR International Conference : Collection of Extent Abstracts >Experimental Study of the Suction Mouth ofPneumatic Grassland Locust Trap Machine
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Experimental Study of the Suction Mouth ofPneumatic Grassland Locust Trap Machine

机译：气动草地蝗虫诱捕器吸口的实验研究

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摘要

The pneumatic grassland locust trap machine that controls locust by physical method is anew kind of machine for plant protection. Aiming at the lower rate of suction trap and locust bumpingagainst the suction mouth wall and smashing phenomenon etc., the push-pull suction mouth wasdesigned on the base of the theoretic analysis of the previous direct suction mouth, the jumping anddodging characteristics of the locust when they were sucked, and measuring of locust’s suspensionspeed. The main factors e.g. the airflow speed at the suction mouth and the blow mouth, the obliquityof the blow mouth, the width of the blow mouth that affected the forma -tion of the convolute air coverwere studied. Comparing with the previous direct suction mouth, the experiment results were thefollowing: (1) The airflow speed of suction mouth was decreased from 20m/s to 14m/s, which couldreduce the burden of subsequent equipments. (2) Comparing with the direct suction mouth, the axialand radial dimensions were extended 1.5～2 times larger than the previous suction trap dimensions,and the negative pressure suction trap area was enlarged 2～3 times of the previous one. Locusts inthe larger negative pressure field would be sucked effectively and the efficiency of suction trap wouldbe greatly improved. (3) The reasonable parameters of the convolute air cover were attained. Thetheoretical foundation was provided for design and improvement of the pneumatic grassland locusttrap machine.
机译：用物理方法控制蝗虫的气动草地蝗虫捕集机是一台 新型的植保机器。旨在降低吸水率和刺槐的撞击率 面对吸嘴壁和粉碎现象等，推拉吸嘴呈 根据以前的直接吸嘴的理论分析设计，跳跃和 蝗虫被吸食时的躲避特性，以及蝗虫的悬浮液测量 速度。主要因素例如吸气口和吹气口处的气流速度，倾角 吹嘴的宽度影响了回旋空气盖的形成 被研究了。与以前的直接吸嘴相比，实验结果是 以下是：（1）吸嘴的气流速度从20m / s降低到14m / s，这可以 减轻后续设备的负担。 （2）与直接吸嘴相比，轴向 径向尺寸比以前的吸水弯管尺寸扩大了1.5〜2倍， 负压捕集阱面积扩大了前一个的2〜3倍。蝗虫在 较大的负压场将被有效地抽吸，并且吸阱的效率将提高 会大大改善。 （3）达到合理的回旋风罩参数。这 为气动蝗虫的设计和改良提供了理论基础。 陷阱机。

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