Design and test of a centrifugal shellfish seeding device for tidal flat aquaculture
HUANG Wei, LI Xiuchen, MU Gang, ZHANG Guochen, BAI Yongan, ZHANG Hanbing
1.College of Mechanical and Power Engineering, Dalian Ocean University, Dalian 116023, China; 2.Key Laboratory of Environment Controlled Aquaculture(Dalian Ocean University),Ministry of Education, Dalian 116023,China; 3.Research & Development Center of Fisheries Equipment and Engineering, Liaoning Province, Dalian 116023, China; 4.Panjin Guanghe Crab Industry Company Limited, Panjin 124200, China
Abstract: In order to solve the problems of high labor intensity, low efficiency and poor uniformity of manual seedling, a centrifugal seeding device was designed for tidal flat culture of surf clam Mactraveneriformis, according to the characteristics of clam and the seedling operation specifications.The force and movement of the seedling process was analyzed and the dynamic moving model of the clam on impeller disc was established.Discrete element simulation of the seeding process by discrete element method(EDEM)and simulation orthogonal experiment based on Design-Expert software were carried out.The response surface analysis of variation coefficient of shellfish seedling distribution and the travel speed of seedling device, the number of impeller disc blades and the speed of impeller disc were investigated, and operational performance of the seeding device was demonstrated by site seeding.The regression analysis and tidal flat seeding approach revealed that the optimal operational performance of the seeding device was observed under the combined parameters of blade number of 4, the impeller disc revolving speed of 500 r/min, and the moving speed of 0.77 m/s in the ship, with the simulation value of 8.53% in the discrete element distribution variation, the measured value of 9.33% by the polycast seedling device, the relative error of the simulation value and the measured value of 8.46%, and the fragmentation rate of 2.17%.The findings indicate that the simulation analysis method based on discrete is feasible to use in the design and parameter optimization of the centrifugal shellfish seeding device, and provide reference for the beach equipments.
黄伟, 李秀辰, 母刚, 张国琛, 白永安, 张寒冰. 离心式滩涂贝类播苗装置设计与试验[J]. 大连海洋大学学报, 2022, 37(2): 320-328.
HUANG Wei, LI Xiuchen, MU Gang, ZHANG Guochen, BAI Yongan, ZHANG Hanbing. Design and test of a centrifugal shellfish seeding device for tidal flat aquaculture. Journal of Dalian Ocean University, 2022, 37(2): 320-328.
2022, Vol. 37 
