МЕХАНИКА ВЗВЕШЕННОГО СЛОЯ С ПОЛИДИСПЕРСНЫМИ ЧАСТИЦАМИ В ПНЕВМОСМЕСИТЕЛЯХ НЕПРЕРЫВНОГО ДЕЙСТВИЯ

Abstract

The quality of mixing of dry building mixes largely depends on the specialized equipment that is used in this process. For the best mixing of dry building mixes, continuous pneumatic mixers are used. Continuous air mixers are the most effective equipment for producing dry building mixes with a higher degree of uniformity. This indicator allows to achieve a better final product. Currently, there are a large number of continuous air mixers that are actively being modernized both in our country and abroad. The article presents a technique that describes the mechanics of a suspended layer with polydisperse particles in the working volume of the displacement palette of a continuous air mixer. The method is based on research conducted by the authors of the article, taking into account experimental data obtained by other scientists. This paper summarizes an approach to numerical modeling of a suspended layer with particles of different dispersion (for example, for dry building mixes) and density. The dependences of the layer boundary, its porosity, and speed parameters on the particle diameters, geometric parameters of the mixing chamber, and other technological values that affect the suspended layer inside the chamber are established. The article presents an algorithm for calculating the mechanics of the weighted layer, which proved itself in numerical modeling of the layer with high accuracy of calculations, which is later confirmed by the necessary amount of experimental data.