Rolling Process Pelletizer Design for Bio-fertilizer Production

Rolling process pelletizer which provides more efficient pelletizing technique that eases bio-fertilizers production had been designed. The designed mechanisms were centered on the dynamics of the machine components that consist mainly of links and joints. Tensions and loads were determined by following the force balance equations. Bearings were selected from the SKF bearing catalogue by considering their positions, evaluation of the demands of the failure theories alongside with the dynamic load carrying capacities. Stability test was conducted on conveyor/mixing shaft of mass ۱۱.۲۵۶۱kg and density ۸۰۰۰kg/m۳ by fixing one end and applying pressure of ۱.۰۶۱x۱۰-۳N/mm۲ towards the other end in line with demands of distortion energy theory. Frame stability test was also conducted by applying beam mesh that generated ۳۵۴ nodes and ۳۳۴ elements. Tension of ۲۰۵.۲N and ۱۲۶.۵N were calculated at the pulley. Various loads and moments acting on different shafts were determined and represented diagrammatically. Von mises stress of ۱.۸۴۷E+۰۰N/mm۲ on conveyor shaft and upper bound axial and bending stress of ۲.۷۵۹E+۰۶N/m۲ on the frame that was below material’s yield strength of ۲.۰۶۸E+۰۸N/m۲ based on the result of simulation test indicated stability of the design. The design is expected to function as well in similar production areas.