Experimental studies of flexible sectional screw conveyor torque value

Abstract

. Despite the presence of a wide variety of designs for the transportation of bulk materials in closed technological highways, the problem of their improvement and the search for optimal parameters remains relevant. High productivity and mobility of the loading and unloading technological operations with a minimum degree of damage to the material on complex curved routes can be achieved using flexible screw conveyors. As an object of study there was used a new flexible screw conveyor of an experimental design. To determine the dependence of the torque upon the change in the rotational speed of the screw, the height of the lifted material and the bending radius of the flexible screw-type hinged-sectional working body, the method of a full-factorial experiment was used. It was established that the dominant factor that affects the magnitude of the torque is the frequency of rotation of the working body, but the least influential factor is the bending radius of the flexible screw hinged sectional working body. When changing the frequency of rotation of the working body within the range of 300...800 rpm, the torque increases by 17% for barley and by 18% for technical salt. When the height of lifting the material changes within 1...3 m, the torque increases by 14% for barley and by 16% for technical salt.