For the screw conveyor of the asphalt mixture insulation vehicle

by means of the mathematical methods the axial movement speed and the circumferential speed of the screw conveyor are derived

and then the calculation formula of the spiral shaft rotation speed

helical blade diameter and pitch are deduced.According to the calculation formula

the design parameters of the screw conveyor of the asphalt mixture insulation vehicle are calculated.Finally

by using of Engineering Fluid Dynamics software the material flow analysis model of the screw conveyor is established

and the flow field of asphalt mixing material is simulated.The results show that the screw conveyor can stir and mix the materials

as a result of exit space limitation the material is dumped by screw extrusion and should minimize the extend size.The reference for the selection

design and optimization of the screw conveyor will be provided by the research results.