养殖工船自动投饲机设计和螺旋下料器的仿真分析

Design and simulation analysis of automatic bait feeder for breeding vessels

针对现有投饲机无法满足大型集约化深远海养殖工船投饲作业的工作需求,颗粒饲料因输送工艺和结构参数不合理导致管道堵塞,为提高颗粒饲料输送性能与效果,设计了一种可集中控制、定时、定量、定速作业的远程气力输送的自动投饲机,确定了投饲机的总体结构,完成了对螺旋下料器的关键部位的设计,开展了EDEM离散元仿真分析。仿真结果显示:饲料颗粒在该装置中,从生成到排除过程中不会发生堵塞、滞留的现象,且下料速度可以通过螺旋轴的转速控制,下料速度稳定,当螺旋轴转速达到40 r/min时,满足投料速度1.5 t/h。该设计和研究为后续的深远海养殖投饲设备的设计和性能优化提供参考和依据。

In order to improve the performance and effect of pellet feed conveying,an automatic baiting machine with remote pneumatic conveying,which can be controlled centrally,and operated at regular time,quantity and speed,was designed to meet the working demand of large intensive deep-sea breeding vessels for baiting operation.The overall structure of the baiter was determined,the design of the key parts of the screw feeder was completed,and the discrete element simulation analysis of EDEM(high performance bulk and granular material simulation software)was carried out.The simulation results show that the feed pellets in the device will not be clogged or stagnated during the process from generation to elimination.The feeding speed can be controlled by the rotational speed of the spiral shaft,and the feeding speed is stable.When the spiral shaft speed reaches 40 r/min,the feeding speed of 1.5 t/h is satisfied.The design and a research provide reference and a basis for the design and performance optimization of the subsequent deep-sea culture feeding equipment.