Transport properties of the new vibratory conveyor at operations in the resonance zone

Witold Surówka,Piotr Czubak

doi:10.1515/eng-2021-0122

Abstract

Abstract The new vibratory conveyor intended for the precise material dosage was investigated in the hereby study. The transport possibilities in the circum-resonance zone were tested analytically as well as by simulation. The optimal working point of the system, allowing to lower the vibration amplitude of the eliminator on its own suspension, was found. Transport velocities in dependence on the excitation frequency were determined by simulation. The results were verified on the specially designed industrial conveyor whose parameters were determined using analytical and simulation investigations, built according to the patent application.

Highlights

The new vibratory conveyor, being the subject of the authors’ patent application, allowing accurate dosage of the feed was investigated in the hereby study
Feeders of small sizes are most often made on the suspension of leaf springs and they are usually driven by the expensive electromagnetic excitation [4], which provides a total and immediate control over the trough movement allowing the material dosage [5]
The dosage by decreasing the transport velocity is realized by a significant decrease in the excitation frequency causing steep angles of the material feed flow at the trough edge

Summary

Introduction

The new vibratory conveyor, being the subject of the authors’ patent application, allowing accurate dosage of the feed was investigated in the hereby study. The solution, in which the dosing feeder is driven by the system of counter running vibrators, is known [6] In this solution, the dosage by decreasing the transport velocity is realized by a significant decrease in the excitation frequency causing steep angles of the material feed flow at the trough edge. The author substituted the conveyor model, in which the feed was moving in the direction of the trough movement, by the two-mass model, in which the feed was influencing in vertical direction The advantage of such solutions of base excited conveyors is minimisation of forces transmitted to foundations; regardless of a relatively similar construction to the one proposed in this article, they are suitable neither for dosing nor for rapid stopping of the feed flow

Construction of the analysed conveyor

Analytical studies of the substituting system of two degrees of freedom

Simulation investigations

Results of simulation studies

Testing of the industrial conveyor

Conclusion