Diseño y construcción de molino eléctrico triturador para la reutilización de resina poliéster en esculturas religiosas con capacidad de 25 kg/h.

Abstract

This project proposes the manufacture and implementation of a hammer mill that reuses polyester resin for filling in sculptures and decorative products for a craft workshop, covering a demand of at least 25 kg / h of crushed material. Considering the physicochemical characteristics of the component to be fragmented, it has a density of 1.2 g / cm3 and a hardness of 30 to 55 Barcol (hardness in plastic materials) in cured resin parts (solid state), in addition to its resistance to bending it can reach up to 80 MPa, that is why by obtaining the necessary breaking energy for resin chunks up to 50 mm x 50 mm x 10 mm 16 hammers were distributed evenly in the grinding chamber, the same ones that reach an impact force of approximately 895 N each; This machine uses a motor with a power of 2HP and a speed of 1500rpm giving an effective turning radius of 0.16m which served to define the dimensions of the components that measure the mill. In grinding tests, a granulometric dimension of approximately 3 mm is obtained, complying with the requirements requested by the craft workshop. These grinding tests were carried out with thicknesses from 2 mm to 10 mm with the same weight of 2.5 kg of resin pieces, giving a specific result for the minimum thickness 1 minute and with the widest thickness 5 minutes to complete the crushing process.