关键词: 直线振动筛, 扇贝肉壳分离, 离散元, 工艺参数, 筛分效率

Abstract: In order to improve the screening efficiency and quality of scallop meat and shell separation after the steaming process, a stepped linear vibrating screen device was designed. Firstly, the structure of the linear vibrating screen was designed and improved using 3D drawing software. The screening process of scallop material under different process parameters of the vibrating screen was simulated based on EDEM discrete element simulation software. The impact of different process parameters of the linear vibrating screen on the screening efficiency was analyzed using the data obtained from simulation tests. The process parameters of the device were optimized using evaluation indicators such as screening efficiency and impurity rate. Finally, a bench test was carried out to verify the reliability of the parameters obtained from the simulation test. The results show that when the linear vibrating screen had a vibration frequency of 12 Hz, an amplitude of 4 mm, a vibration direction angle of 30°, and a screen inclination of 6°, the screening efficiency reached 98% and the impurity rate did not exceed 3%. The reliability of the process parameters obtained from the discrete element simulation experiments were verified. This paper provides a reference for the efficiency analysis and parameter selection of future shellfish flesh and shell separation devices.

Key words: linear vibrating screen, scallop flesh and shell separation, discrete element, process parameters, screening efficiency