RESEARCH OF PLATE FEEDERS ENERGY CONSUMPTION FOR BULK MATERIALS

Abstract

Creation  of  mathematical  models  that  allow  determining  the  relationship  between  the design and technological parameters of the plate feeders and the energy consumption arising during their
operation. Methodology.  The  work  uses  the  classical  mechanics  principles,  the  contact  interaction  of  solids theory and the mathematical modeling method. Findings.  The  paper  considers  the  design  and  operation  principle  of  a  continuous  plate  feeder, defines its main design and technological parameters. The factors that create mechanical loads on the drive of  the  feeder  plate  are  investigated.  Mathematical  models  have  been  developed  that  make  it  possible  to determine the moments of resistance and the power consumed by an electric motor during the equipment operation. The proposed models make it possible to determine the load on the drive in static and dynamic operation modes and take into account the design, technological parameters of the equipment and the bulk material physical and mechanical properties. The study results of the friction coefficients influence, the knife position and the force of its pressing on the plate surface, the plate rotation speed on the loads acting on the electric drive are presented. It has been found that the drive calculation is expedient for the mode in which the distance between the knife edge and the rotation axis of the plate is maximum, which corresponds to the operation at maximum load. It has been determined that a change in the feeder technological parameters (plate rotation speed, knife position) can lead to a change in the load on the electric drive by 86%, which must be taken into account when choosing a drive.
Originality.  Mathematical  models  of  the  continuous  plate  feeder  operation  have  been  developed, which make it possible to determine the relationship between the design and technological parameters of the
plate feeders and energy consumption. Practical value. The results obtained make it possible to determine the load on the plate drive by the
known design, technological parameters and bulk material physical and mechanical properties.