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精准配比料药一体化生猪饲喂器设计与试验

Design and Experiment of Pig Feeding Device with Accurate Proportioning of Feed and Drug
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摘要 针对向生猪饲料中添加颗粒药物时药物分布不均导致的药物利用率低的问题,设计了一种精准配比料药一体化饲喂器,以计量式斜槽轮为排料装置,并对排料斜槽轮、排药斜槽轮、饲料分流刀等关键部件进行了设计和仿真,实现给定质量比范围内的实时精准加药。用离散元分析软件EDEM进行排料稳定性分析,得出转速为40~60 r/min时排料槽轮的稳定性较好,根据(100~250)∶1的料药质量配比确定排药槽轮转速为10~20 r/min。用力链分析饲料颗粒和药物颗粒在斜槽轮排料装置工作时的受力情况,可知饲料颗粒和药物颗粒所受的外力小于破碎力,两种颗粒在整个运动过程中所受的外力不会造成颗粒破碎。通过样机试验测得在给定转速范围内,可实现的料药质量配比范围为(93.4~251.8)∶1,给定的料药质量配比在此范围内;进行料药配比混合台架试验,试验结果表明精准配比料药一体化饲喂器能实现向饲料中实时精准加药,解决了小粒径小流量的药物颗粒在大粒径大流量的饲料颗粒中分布不均匀问题。 Focusing on the problem of low drug utilization caused by uneven drug distribution when adding granular drugs to pig feed,a precise feed and drug integrated feeder was designed,with a metering inclined flute-wheel as the discharge device,and key components were designed to achieve real-time and accurate dosing under a given mass ratio range.Using the discrete element analysis software EDEM 2018 for discharge stability analysis,it was found that the stability of the feed discharge flute-wheel was good when the speed was 40~60 r/min.Based on the(100~250)∶1 material and drug mass ratio,the drug discharge flute-wheel speed was determined to be 10~20 r/min.The force chain analysis showed that the external force acting on feed particles and drug particles during the operation of the flute-wheel discharge device were smaller than the crushing force,and it would not cause particle breakage during the entire movement process.Through prototype testing,it was found that within the given speed range,the achievable material and drug mass ratio range was(93.4~251.8)∶1,and the given material and drug mass ratio was within this range.A bench test was conducted on the feed and drug ratio,and the experimental results showed that the precise feed and drug integrated feeder can achieve real-time and precise dosing into the feed,solving the problem of uneven distribution of small particle size and small flow rate drug particles in large particle size and large flow rate feed particles.
作者 闫银发 刘冠鲁 宋占华 田富洋 李法德 刘莫尘 YAN Yinfa;LIU Guanlu;SONG Zhanhua;TIAN Fuyang;LI Fade;LIU Mochen(College of Mechanical and Electronic Engineering,Shandong Agricultural University,Taian 271018,China;Shandong Provincial Key Laboratory of Horticultural Machinery and Equipment,Taian 271018,China;Shandong Provincial Engineering Laboratory of Intelligent Agricultural Equipment,Taian 271018,China)
出处 《农业机械学报》 EI CAS CSCD 北大核心 2023年第S02期142-149,共8页 Transactions of the Chinese Society for Agricultural Machinery
基金 山东省重点研发计划(乡村振兴科技创新提振行动计划)项目(2022TZXD0014)
关键词 生猪 料药一体饲喂器 精准配比 斜槽轮排料器 离散元 变异系数 pig feed and drug feeder accurate matching incline flute-wheel discrete element coefficient of variation
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