Design and Numerical Simulation Study of Film Rod Reparation Device for Residual Film Recycling Machine

Abstract

For the residual film recycling machine work, after the recovery of residual film, cotton stalks, crushed soil, and other impurities are not easy to separate; it is challenging to realize the secondary use of the problem. A waste film and impurity wind selection device were designed to recognize waste film recycling and separate soil film rods. The overall structure and working principles of the machine are described. A three-dimensional computational fluid dynamics model of a film rod separation device was developed. The flow field within the film rod separation unit was analyzed by numerical simulation using 2023 R1 ANSYS Fluent software. Based on the differences of impurities such as residual film, soil, and cotton stalks in terms of density, suspension velocity, and their characteristics, the pressure distribution and velocity distribution of the internal flow field of soil, residual film, and cotton stalks at the site were investigated. The air inlet velocity, screen cylinder rotation, and main shaft rotation velocity were changed. Experiments were conducted to obtain wind selection parameters for suitable soil, residual film, and cotton stalk separators. Analysis of orthogonal experiments, polar variance of analysis, and analysis of variance yielded a better combination of working parameters: when the drum sieve velocity is 25 r/min, the spindle velocity is 35 r/min, and inlet wind velocity is 14 m/s, after the separation of residual film impurity rate of 8.9%. The results of the study can provide a theoretical basis for the development of film separation equipment.