Wood pellets transport with vibrating conveyor: experimental for DEM simulations analysis

Abstract

This work presents a comprehensive overview of the mechanical-physical parameters of the transport material affecting the vibratory transport. For this purpose, spruce pellets of different lengths, oak rods and spruce crush were tested. The determined parameters were particle size distribution and shape, internal friction, static and dynamic angle of repose. The samples were transported by a patented validation vibrating conveyor. Various settings were used. The results show that by changing the shape, it is possible to reduce friction or resistance as well as energy intensity during transport. It was observed that perfect shapes and lighter particles have lower friction, but a more pronounced bounce. Therefore, it does not form a typical pattern during transport, as in the case of an imperfectly shaped one. There is also included a simulation of the discrete element method. The study shows the possibility of the vibration machine where the material can be conveyed either directionally or sorted.

Numerical Simulation of Conveying Fine Powders in a Screw Conveyor Using the Discrete Element Method

“…To adequately describe the transport of bulk materials and powders, it is necessary to understand and describe various phenomena that occur during the transportation of different bulk solids [1][2][3] in order to transport materials to the desired location, production plant, or machine. During transport, we deal with mixing, agglomeration of transported material, the flow behaviour of granular material, recirculation, wear, and many other phenomena that need to be utilized, suppressed, or applied for desired use [4][5][6].…”

Modelling and experimental investigation of the vibratory conveyor operating conditions

“…Numerous scientific papers are devoted to studying the dynamic behaviour and operational efficiency of vibratory conveyors. These machines are usually equipped with inertial exciters based on unbalanced rotors [1]- [5]. For example, the mathematical modelling and experimental studies of a vibratory conveyor developed for feeding bulky and loose products are carried out in [1].…”

“…These machines are usually equipped with inertial exciters based on unbalanced rotors [1]- [5]. For example, the mathematical modelling and experimental studies of a vibratory conveyor developed for feeding bulky and loose products are carried out in [1]. The paper [2] is focused on investigating the possibilities of reducing the conveyor influence on the foundation it is mounted on.…”