Development of differential equations to represent the motion of the mass of plastic bags waste on threshing tooth’s surface in plastic bags cleaning machine under threshing – sucking principle

Abstract

Plastic bags cleaning machine under threshing - sucking principle is the machinery used for separating and segregating other components attaching to the surface of plastic bags or mixed in the mass of plastic bags for the plastic bags recycling technology. This is first type of plastic bags cleaning machine studied and published by authors in a report of summarizing scientific topics of Ho Chi Minh City (2013-2014) accepted: "Research on plastic bags cleaning machine under threshing – shaking principle to apply in recycling plastic bags from waste". This article first presents in detailed the development method of differential equations describing the dynamics of the mass of plastic bags on threshing tooth’s surface of plastic bags cleaning machine under threshing – sucking principle. The purpose of study is to determine the mechanisms of separating different components as the mass of plastic bags that located on the flat - bar tooth's surface. Mathematical model simulates the movement of the plastic bags on the flat - bar tooth's surface developed according to D’Alembert’s principle