In order to study the effect of rotating speed of sand roller,distance between sand roller and rice sieve and spiral grooveβAngle of sand roller surface on flow field velocity and pressure in horizontal sand roller rice milling machine.Based on NS·18 horizontal sand roller rice milling machine,Fluent software was used to simulate the flow field in whitening chamber.The results show that the axial propulsion and rolling effect will be enhanced with the increase of the rotating speed of sand roller.When the distance between the sand roller and ...