Study On Technics Performance Of Drum Blender And Structure Optimization

Drum blender is one of the most important equipments in modern iron andsteel corporation. Drum blender is bulky and weighty with great vibration andnoises. The material attached to the inner wall of drum blender is hard to clear.Especially, the mixing and balling effect in secondary drum blender isunsatisfactory. The disposal of the support tires is inconsequential, resulting inlarge elastic deformation in tires and increasing the resistance moment. Someserious problems appear, such as great current fluctuation, frequent gluing ofspeed reducer and large scuff of tires etc.The mixing and rolling process of material is explored. Six characteristicsof material motion in drum blender are carefully studied. Influence factors onmaterial mixing and balling is described. To get technical Optimization,optimal operation parameters on primary and secondary drum blender isanalyzed.Radial mechanical performance of the drum is analyzed. As a result,calculation method on radial force calculating is given. Based on SimultaneousEquations of three-moment Equation and strain-force relation, a method isbrought forward to obtain the force of the support tires. And the results aremore authentic. The sliding friction arises for relative slip between drum andtires. And the influence on the scuff of tires is discussed. A computing exampleis given finally.Total support reaction distribution among the support tires is analyzed byFEM software ANSYS. It comes to a conclusion that the support reactionvaries very little among the support tires. The stress, strain and displacementsupport of tires are presented. The curve on the strain-force relation is painted.Using modern optimization theory, the distance among support tires areoptimized to get better support force distribution. And the contact angle of tiresis optimized to get better support force distribution between lord side and slaveside.