Study on Increase the Dosing Efficiency of Auger Filling Unit by Improving Bulk Density of Powder

Abstract

  This research aims to investigate the factors contributing to variations in the filling weight of an auger filling machine, explore potential methods for improving filling weight consistency, and assess the improvements after implementing those methods. The study began with a brainstorming session involving engineers and technicians to identify key factors influencing filling weight. These factors included screw design, product bulk density (BD), the presence of dust, and moisture content in the product being filled. The analysis revealed that variations in the product's bulk density and dust content were significant contributors to filling weight inconsistencies. Subsequently, experiments were designed to test methods for improving filling accuracy. The results demonstrated that using a vacuum system in the auger casing effectively increased the product’s bulk density, leading to enhanced filling accuracy. As a result, the filling accuracy improved from ±2.5% to ±1%.