POST HARVEST PROFILE OF POTATO - Agmarknet

iii)iv)Grading of potatoes by the mechanical grader, where the sieves are mounted onthe oscillation of frame as operated mechanically by power. This grader can beoperated with 1H.P. electric motor, engine or tractor.Grading of potato with power operated potato grader with conveyer attachmentgives better grading efficiency (90 per cent) .The power requirement is 1.5 H.P .Itcan grade four categories viz less than 10 gms,10-25 gms, 25-60 gms, and morethan 60 gms.v) The rubber roller type of potato grader grades, six categories of grades viz. lessthan 10 gms, 10-25 gms, 25-50 gms, 50-75 gms, 75-100 gms, and more than100 gms.The system consist of mainframe, grading rollers, conveyor belt andpower transmission system. The grader is operated by 2 H.P electric motor.2) HAND OPERATED POTATO GRADERFunction: Sorting of potatoes into different size gradesSpecifications:Type: Manually Operated, Oscillating sieves.Dimension: 2880mm(L) X 2940mm(w) X 1950mm(h)Weight : 300 kgs.No. of sieves : Two oscillating and one fixed.Sieve inclination: 11%.Sieve perforation: 45 mm and 30 mm diameter (oscillating sieves), 20 mm diameter (fixedsieve)Power transmission: Through belt and pulley arrangement.Performance:Output capacity : 20q/hr.Grade size: i) Upto 50 gms, ii) 50-75 gms., iii) Above 75 gms.Grading efficiency: 85%.Tuber brushing: Less than 2%.Labour requirement : 8-9 persons.Cost ( Approx) : Rs: 8000/-12