Kinematic Analysis on Materials on Counter Flow Screen and Selection of Dynamic Parameters of Machine

Jing Jiang,Yuan Hua Xie,Jin Han,Qing Kai Han,Shu Ying Liu

doi:10.4028/www.scientific.net/aef.2-3.1027

Abstract

The paper presents the structural characteristics of counter flow screen. Pieces of plastic film and sandstones with different friction factors and elasticity coefficients are chosen as the research objects. The motion state and the sorting mechanism of materials in the sorting process are studied. According to the motion analysis on pieces of plastic film and sandstones on counter flow screen, it can be concluded that the materials with different friction factors and elasticity coefficients can all be sorted by counter flow screen. The more difference they have in friction factors and elasticity coefficients, the better sorting performance can be achieved. The selection and computation on the dynamical parameters of counter flow screen is carried out, which provides the theory evidence for the design of new friction sorting equipment and opens up new prospects for the application of counter flow screen.

Highlights

Most of the treatment with environmental pollution is passively executed in China
The motion state of materials with different friction factors and elasticity coefficients on counter flow screen is analyzed in order to apply the separation function of vibrating screen to dispose solid wastes including pieces of plastic film
When the rotating speed of counter flow screen is n+ min < n < n−min and the acceleration of screen machine is a1 < a < a2, pieces of plastic film, scraps of paper, and chips of wood can only produce positive slide and move upward along the screen surface; when the rotating speed of counter flow screen is n+ min < n > n−min and the acceleration of screen machine is a1 < a > a2, pieces of plastic film, scraps of paper, and chips of wood etc. can produce both positive and reverse slide

Summary

Introduction

Most of the treatment with environmental pollution is passively executed in China. If there is no mandatory order from environmental protection agencies or government departments, few enterprises would like to implement this work actively. The motion state of materials with different friction factors and elasticity coefficients on counter flow screen is analyzed in order to apply the separation function of vibrating screen to dispose solid wastes including pieces of plastic film.

Results

Conclusion