In this study a ginner of 20 saws was developed for processing cotton seeds. The constituent parts of the ginner of 20 saws essentially consist of the following devices: static frame (chassis), consisting of two iron plates of 6.35 mm thickness, for the support of other components of the machine; a box of cotton accumulator; chamber of a mass of cotton ginning; device for regulating the amount of linter; a cylinder composed of 20 saws, another of brushes; a capacitor; gear for shifting and activating the cylinder, ginner discs; a three-phase 5 HP electric motor, 320-220 V to drive the devices for processing, by means of pulleys and belts, and automatic switch. The evaluation of the 20 delinter saws was done in assessment with 50 and 90 saws machines widely used by the cotton benefiting factories in Northeast Brazil. The ginner developed responds satisfactorily to treatment of cotton seeds with performance similar to the machines of 50 and 90 saws for all technological fiber characteristics analyzed in HVI. The efficiency of the work of ginner was at 344 rpm, with the device to adjust the amount of linter in position A and the sample of 600 g.
delintering; machinery developing; cotton fibers
