Small Foam Asphalt Mixing Equipment Design And Parameter Optimization

Mixing equipment is a kind of engineering machinery. It is widely used. Among allkinds of mixing equipment， The mixing equipment of asphalt mixture are mainlycomposed of compulsory biaxial horizontal mixing equipment.With the foamed asphaltfoaming technology matured, Compared with ordinary asphalt, Foam asphalt andaggregate mixing with high technical characteristics. So for the mandatory biaxialhorizontal mixing equipment internal structure optimization, To improve the level of foamasphalt mixture mixing technology has very important significance. Biaxial horizontalmixing equipment of material flow within the unsteady turbulent flow is very complex.，It’s directly closely related with the internal flow field of flow performance. Through theinternal structure of mixing equipment design,3d modeling, analysis, CFD software toparse the mixing flow field inside the equipment, Optimizing the internal flow fieldstructure, Can ultimately improve the level of biaxial horizontal mixing equipment design.Firstly, the structure of mixing equipment intermittent mandatory biaxial horizontalmixing equipment was determined according to the physical properties of bitumen froth,Foam asphalt mixture gradation and experimental work requiredAccording to the biaxial horizontal mixing equipment affect and the structure ofmixing performance parameters, Using UG software to create3d model.The pretreatmentwith fluid dynamics analysis software Fluent software Gambit to establish for mesh ofhexahedron grid number increasing，To determine the calculation accuracy and efficiencyof a suitable grid size. Based on eulerian multiphase flow model and UDF model，Bychanging the stirring shaft rotational position make a series of unsteady turbulent flow iscalculated. Through the contrast analysis, The turbulent model of impeller rotation processits geometry on the result of calculation, Finding the structure, The relationship betweenthe calculation results for the use of CFD technology to develop new and efficient biaxialhorizontal mixing equipment lay the foundation.In the contrastive analysis, Design, And biaxial agitation Bi Zheng zheng, Anti threearrangement forms and the blade installation angle of45°and60°two installation angle.The experiments show that the blade is suit, Mixing blade installation Angle is45°,Arrangements for flow around a stirring arm, Two axis staggered, Stirring arm uniaxial stirring arm is90°phase can be well within the range of performance to improve theefficiency of the biaxial horizontal mixing equipment. The method to realize the effectiveutilization and guidance to control the boundary layer turbulence flow and improve theefficiency of the method. Design theory of biaxial horizontal mixing equipment haspositive significance.