Abstract
This study was done to study the vertical conveying of a bulk solid in a pipe belt conveyor system. An elastic and clear pipe with an inner diameter of 10mm was used as a conveyor belt. The pipe loaded with solid particles was run through guide rollers from horizontal to vertical forming a right-angled bend with a curvature radius of 100mm. The motion of solid particles at the bend was observed by a video camera.
A steady state of the motion showed that solid particles were slided up by a friction against walls of the pipe and then down onto following particles which arrived at a lower part of the bend. During this motion, particles filled the cross section of the pipe above the bend. From this fact, it was concluded that vertical conveyance could be achieved in the pipe belt conveyor system.
