Design and experiment of the vibratory cleaning device for shellfish harvesting machine

In order to remove mud and realize the separation of shellfish and mud in the process of collecting and catching shellfish in muddy beach, a shellfish cleaning device based on mechanical vibration was designed. In this paper, the forces on shellfish during the cleaning process were analyzed and the physical dimensions of shellfish were measured, the main factors affecting the cleaning performance were clarified and the test value range of each factor were determined through pre-tests. The inclination angle of the screen, the rotational speed of the vibration motor and the number of eccentric blocks were taken as the test factors, the shell ratio and the completion time as the evaluation indexes, the orthogonal test was carried out with the mud clam as the research object, and the influence of each factor on the cleaning performance was analyzed, a reasonable combinations of parameters was obtained and the validation tests was performed. The results showed that when the inclination angle of bar screen was 12°, the rotational speed of vibration motor was 2 100 r/min and the number of eccentric blocks was 16, the cleaning effect and efficiency were better. The shell ratio was 74% and the completion time was 28 s.