Desenvolvimento e avaliação de um descaroçador de 20 serras para o beneficiamento do algodão

• Autor(a) principal: Araújo, Maria Elessandra Rodrigues
• Data de Publicação: 2010
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UFPB
• Texto Completo: https://repositorio.ufpb.br/jspui/handle/123456789/14681
• topic: Descaroçadores de algodão; Desenvolvimento de máquinas; Fibras de algodão; CNPQ::CIENCIAS AGRARIAS::AGRONOMIA

The cotton culture is an agric activity of recognized socioeconomic importance, especially for the Brazilian Northeast, where all the cotton is produced by small farmers, forming an important source of employment and income in the countryside. However, the cotton in this region is commercialized with its seeds, which takes from the small producer the chance of adding value to his production. To strengthen the family agriculture, it’s necessary to adjoin value to its production, what can be done through installing simple equipments, compacts and itinerants, which will benefit the cotton in its own producing place. Disposing that way, fiber for commercialization along with the textile industry and the local handcraft, especially in the colored cotton case, the seeds for the new plantings, and its surplus for animal feeding. Hence, at the light of what was exposed, for the reason of the rising demand of raw material (fiber) by the textile industry and by the local handcrafting, this job had as goal the development and evaluation of a 20 saws cottonseed delinter. The 20 saws delinter is composed basically, by the following components: a cotton storing box; a cotton delinting cylinder constituted by 20 saws with 495.30 mm in diameter; a cylinder with brushes with 350 mm in diameter; a cylinder with condensers with 600 mm; a frame made by plates and strand of steel; a 5 CV three-phase electric motor with start key, pulleys and bands for rotation transmission. Ten cotton fiber’s technologic characteristics were determined on HVI (High Volume Instruments), as well as its profit, physic purity, linter content, mechanic damage, germination and vigor. The evaluation of the 20 saws delinter was done in assessment with 50 and 90 saws machines widely used by the cotton benefiting factories in Brazilian Northeast. The best results were from the 20 saws working at 344 rpm aiming the device to regulate the amount of linter, “A” (PDRL) and with sample size was 600 g; consenting to be concluded that: After the process of delintering, the seeds proceeding from the 20 saw delinter were less damaged, shown up to be more clean, and with higher germination percentage, and that the same is as efficient as the 50 and 90 saws traditionally used in the benefiting factories, completely fulfilling the work goal, that was to attend especially the small cotton farmers that works in the family agriculture.