Study On Mechanism Shelling Scale For Freshwater Fish

Based on understanding the technology about shelling freshwater fish's scale inland and overseas, with the instance of fish breed aquatics inland, especially the request of the fish food deep process. We designed the project and the device that based on the friction theory.The device should include roller, driven wheel, water pipe was integrated the function such as shelling scale, separation, recycling. The article only researched the part of the shelling scale for the short time.The movement condition of the fishes, factors affected shelling scale and the track in the roller of the fishes were emphatically studied in the thesis. Based on these theories, the sense evaluate standard and the conception of the rate were defined. More, the research run the examinations and computer aided analysis.According the analysis the fishes' bio-stress on the utmost condition with FEA, it can be concluded that under the condition of roll and cast, the maximal bio-stress is less than the yield bio-stress. So the quality is accord with the request.Multi-factorial orthogonal test showed that the time has notably influence to the rate and very notably influence to the score; the rotate speed has no notably influence to the rate and very notably influence to the evaluate. On the other hand, the rate is best when the time is 120 seconds, the rotate speed is 30r/min,which is 94.62%;and when the time is 60 seconds, the rotate speed is 22r/min, the score is 0.878, so the sense evaluate is best. So when the time is 120 seconds, the rotate speed is 30r/min,the rate is 94.62% and the sense evaluate is 0.798, it is ideal.