Diseño y construcción de una máquina secadora para cacao tipo rotatoria empleando un sistema de secado automatizado

Abstract

In the present project, the design and construction of a drying machine for rotary-type cocoa were carried out using an automated drying system. This prototype has a mesh drum of stainless steel AISI 304 which will rotate throughout the drying process using a two-axis one-inch rotation system that will carry nylon slips. The material of the slips was chosen in order not to generate noise due to the friction of the bass drum when rotating on the axis and in turn, the nylon will withstand the drying temperature without melting. In addition to this, inside the drum, there will be a welded crescent that will cause the grains to have a continuous movement, and they will be transported from the entrance to the exit of the machine since there will be a motor connected to one of the axes, which that will allow the drum to rotate and the grains to be dried evenly since these will rotate through the drum and receive the heat transmitted by the linear thermal resistances placed under the drum. For the design of this prototype, inspiration was taken from the drying principle used by certain popcorn machines, which also have a meshed bass drum, with different systems of rotation of the product or designs of the bass drum in question. The mechanical design process of this project was carried out using the CAD/CAM software Inventor 2023, which allowed the construction of parts and plans for the realization of this machine. The electrical design process for the dashboard was done using CADe SIMU. Which, the control board was built based on the pre-established requirements of the machine.