基于DEM仿真的种鹅精准饲喂装置设计优选研究

doi:10.13733/j.jcam.issn.20955553.2022.06.009

摘要/Abstract

摘要： 针对优质种鹅品种品系选育产业中存在的种鹅饲养模式粗犷、效益低下，饲养方式机械化与智能化水平低等问题，对种鹅精准饲喂装置的送料机构，采用离散元方法对精准饲喂装置的送料过程进行动态仿真分析，综合考虑饲料颗粒质量流率、出输送管道的速度以及螺旋叶片扭矩等因素，对微型精准饲喂螺旋输送机构的输送管道截面形状、螺旋叶片的类型和螺距等进行参数和结构形式比较优选。研究结果表明：在精准饲喂装置中，针对柱状颗粒饲料，采用管道U形截面、螺距25 mm的有轴螺旋叶片的输送机构相比于其他结构形式输送机构，可实现饲料颗粒输出的平均质量流率7.32 g/s、螺旋叶片受到的平均扭矩19.04 N·m、约90%的饲料颗粒飞出速度均集中0.15~0.2 m/s，具有输送精度高、饲料破损率低、输送扭矩小、效率高等优势，为研制种鹅智能精准饲喂装置解决种鹅传统养殖方式中存在的人工投料饲喂方式粗犷、难以及时获得种鹅个体饲料转化率等难题提供设计依据。

关键词: 种鹅饲养, 精准饲喂, 离散元仿真, EDEM

Abstract: In view of the problems existing in the breeding industry of highquality goose breeds, such as rough feeding mode, low efficiency， low mechanization and intelligent level of feeding methods, the feeding mechanism of the precision feeding device of the goose was analyzed by using the discrete element method. The dynamic simulation analysis of the feeding process of the precision feeding device was carried out. Considering the factors such as the mass flow rate of feed particles, the speed of the delivery pipeline and the torque of the spiral blade, the crosssection shape of the transmission pipeline and the type and pitch of the spiral blade of the micro precision feeding screw conveyor were optimized. The results showed that in the precision feeding device, for cylindrical pellet feed, the conveying mechanism with a Ushaped crosssection pipe and axial spiral blade with a pitch of 25 mm could achieve the average mass flow rate of feed particles output of 7.32 g/s, the average torque of spiral blade of 19.04 N·m, and the flight speed of about 90% feed particles were concentrated by 0.15-0.2 m/s compared with other conveying mechanisms. It had the advantages of high conveying accuracy, low feed damage rate, small conveying torque and high efficiency. It provides a design basis for the development of intelligent precision feeding device for geese to solve the problems of rough artificial feeding and difficulty in obtaining individual feed conversion rate in time in traditional breeding methods of geese.

Key words: breeding geese, precision feeding, discrete element simulation, EDEM

中图分类号:

S817.3

聂传斌, 孙卫明, 张燕军, 李佳眙, 邢煜斌, 龚道清. 基于DEM仿真的种鹅精准饲喂装置设计优选研究[J]. 中国农机化学报, 2022, 43(6): 67-75.

Nie Chuanbin, Sun Weiming, Zhang Yanjun, Li Jiayi, Xing Yubin, Gong Daoqing. . Design and optimization of breeding goose precision feeding device based on DEM simulation[J]. Journal of Chinese Agricultural Mechanization, 2022, 43(6): 67-75.

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