flender motorreductores H2-DV-24B Helical gear Reduction Boxes H2

Flender/Flender Gear Units/Helical gear Reduction Boxes H2

and oats from sound fruits. Uniform feeding ensuresproper removal of skin and prevents cuts. The pulped parchment should be sieved to eliminate any unpulped fruits and fruit skin (. In plantations where there is little water available, recirculation of water in the pulping section is recommended. Adoption of this measure has become necessaryeven in places where water is available in abundance because of water pollution prob-lems. Recirculated water may be used no longer than 1 working day. If it is left overnight,the water is soon contaminated, and use of such water affects the quality of coffee ad- versely. It is desirable to separate lights from well-lled, mature, heavy beans at every stage. At the prefermentation stage this can be done by passing the coffee in channel havinga pronounced slope (at least 4%) and an ample cross section (minimum of 3 /H1 cm). The channel should be cemented and smoothed so that no residue passes through surfacesand cracks. Where facilities are available, grading at the prefermentation stage can also be done by passing the parchment through an Aagard pregrader or grading sieve to separate heavy beans from light. The skins separated by pulping should be led away fromthe vats into collection pits so that microbial decomposition of the skin does not affectthe bean quality when it is mixed with the bean. The approximate chemical compositionis given in Table 4. In the market three types of pulpers, viz., disk, drum, and vertical, are available. The disk type is not 1% efcient because of variation in size of berries and the xed gap between the moving and stationary parts of the pulper (Fig. . The important drum- type pulper (Fig. is capable of rejecting the unpulpable fruits and has facility for greencherry separation. The unpulped fruits are pulped by use of repasser pulping system.The vertical-type pulper is capable of pulping any size of berries, yielding better turnoutand using less energy and water (. Coffee Processing 7 Ta