颗粒饲料力学性能试验研究  

Research on the mechanical properties test of pig pellets

作　　者：李艳聪[1] 杨磊[1] 万志生 李艳琳 宋欣[1] 全鹏坤 Li Yancong Yang Lei Wan Zhisheng Li Yanlin Song Xin Quan Pengkun

机构地区：[1]天津农学院工程技术学院,天津300384 [2]天津市世昌科技发展有限公司,天津301508

出　　处：《饲料工业》2016年第21期22-25,共4页Feed Industry

基　　金：天津市科技特派员项目[15JCTPJC57700];国家星火计划项目(基于饲料品质需求的高效环模制粒机设计及示范)

摘　　要：颗粒饲料因摄食性好,环保节约而广泛食用,但由于颗粒力学强度指标不够引起在运输和打包过程中出现破碎再次出粉,影响适口性。为此,以某类猪颗粒为样本,在电子万能试验机上进行颗粒饲料抗压、剪切和弯曲的力学性能试验,得出6种样本颗粒抗压强度均值为1.109 6 MPa,剪切强度均值为0.858 5 MPa;同样种类的颗粒饲料,弯曲力最易引起颗粒破坏,剪切力次之,压缩施力方式对颗粒断裂的影响程度最小。对试验结果数据的正确性和规律进行了一定理论分析。本结论可为相关颗粒饲料长度和制粒机环模长径比、环模转速确定提供参考依据。Feed pellet has advantage of easy eating, environmental conservation, so widely consumedin the process of livestock industry. But in the transport and packaging process, feed pellet may causebroken again because of lower strength, and show flour state. To this end, tests of compression, shearand bending mechanical properties of pig pellets on the electronic universal testing machine are car-ried out. Obtained that the average compressive strength of six kinds is 1.109 6 MPa, shear strengthmean is 0.858 5 MPa. For the same kind of pellets, bending force most likely to cause damage, shearforce next, and compression manner has minimal impact on particle breakage. The test result is ana-lyzed with mechanics of materials theoretical. This conclusion has some reference value to the lengthof the pellet feed, length-diameter ratio, and ring mold rotational speed.

关 键 词：颗粒饲料 抗压强度 剪切强度 猪 粉化 

分 类 号：S816.32[农业科学—饲料科学]