Repotenciación y automatización del molino de martillo en el laboratorio de procesos industriales de la Facultad de Ciencias.

Abstract

In the current degree project, the repowering and automation of the mill of hammers that was in the Industrial Processes Lab of the Facultad de Ciencias from Escuela Superior Politécnica de Chimborazo (ESPOCH) were realized. In order to be able to recognize the shortcomings of the equipment that had to be improved, an initial physical inspection and a laboratory practice was carried out, in which a feeding of 1000 g of dry beans was taken as a test basis, as it is one of the hardest grains. The results of this test showed that the performance of the milling operation was impossible to obtain, since there were no weights in the sieves corresponding to the fine yarns, in addition the reflected problems caused by the lack of general maintenance by cleaning, greased were referenced and alignment of the team components. To determine the parts of the automation the corresponding calculations were made, which determined the need to place a sensor in the feed hopper and a mesh light control that allows to generate a profit, however the costs of implementation of the complete automation resulted be very high, therefore it was decided to implement a timer, on / off pushbuttons, pilot lights, emergency stop button and a led screen. The validation of the equipment was made after the improvements applied and based on the same laboratory technique used in the first diagnostic test of the equipment, in which very favourable results were obtained, once the repowering was made, the efficiency of the operation of grinding with beans is 97.94%. It is advisable to perform periodic maintenance according to the need and use of the hammer mill to avoid the damage caused by this factor.