coconut dehusking machine
DESCRIPTION
Dehusking is the important post-harvest operation, which is necessary step towards making the coconut ready for the further utilization. Considering the drawbacks of manual dehusking methods, power operated coconut dehusker was developed. This power operated coconut dehusker operates on 1-phase, 1hp electric motor. It consists of main parts like frame, electric motor, speed reduction unit and dehusking unit.TRANSCRIPT
COCONUT DEHUSKING MACHINE
COCONUT DEHUSKING MACHINE
Group No :9 AFTHAB K MUHAMMEDARJUN C VIJAYANBASIL VARGHESEBIJU V V
INTRODUCTIONGenerally, coconuts are dehusked manually using either a machete or a spike [1]ATTEMPTS AT MECHANISATION HAS SO FAR EITHER BEEN not fully SUCCESSFUL OR ended up too COSTLYdisadvantages of present techniques:Time consuminghuman effort requiredlack of man power AVAILABILITYcoconut dehusking machine uses electric powered rotary blade mechanism to tear off the husk from coconut
AIM OF PROJECTWith coconut dehusking machine we aim to provide : Low cost coconut dehuskingReduction of human effortReduction of manpower requirementImprovement on number of nuts processed per hour
DESIGN
COMPONENTSFRAMEBEARINGS & BEARING HOUSINGGEARSHOLLOW SHAFTSBLADESCHAIN & SPROCKETSELECTRIC MOTOROVER ARM & SPRING ARRANGEMENT
SPECIFICATIONSANGLE:ISA 4545HOLLOW SHAFT:40MBEARINGS:45BC02GEARS:SPUR TYPE 89MM RD, 108MM OD, 19MM PITCHSPROCKET:210MM OD & 83MM ODBLADES:1, 3MM FLAT
MOTORPHASE:SINGLEPOWER:1HPSPEED:1420RPM
WORKING PRINCIPLE
FABRICATIONFABRICATION OF FRAME [2]CUTTING [5]GRINDING & [6]WELDING OF ANGLE SECTIONFABRICATION OF BEARING HOUSINGBENDING &WELDING OF FLATGEAR SPLIT INTO TWO BY OXY ACETYLENE TORCHTURNING OF SHAFTS INTO REQUIRED OD [3]CONNECTING SHAFT TO BEARING HOUSING SPOTTING BEARING HOUSINGFABRICATION OF BLADES [4]CUTTING &WELDING OF FLATS ONTO SHAFTS
FABRICATION CONTD.FIXING OF GEARSFABRICATION OF SLEEVESPOTTING OF GEARS ONTO SHAFTSPOTTING OF SPROCKET ONTO SHAFTFIXING OF MOTORDRILLING OF BOLT HOLES ON FLATSSPOTTING OF FLATSBOLTING MOTOR ONTO FLATSPOTTING OF SPROCKET ON MOTOR SHAFTCONNECTING CHAIN TO THE SPROCKETSFABRICATION OF OVER ARM & CONTAINMENT BOXWELDING OF GI SHEETS TO FRAME
MODIFICATIONSCOCONUT GETTING JAMMED BLADE CONFIGURATIONS CHANGEDBLADE HEIGHT REDUCED AND RECUTSPEED OF ROTATION HIGHPULLEY CHANGED TO CHAIN AND SPROCKETINTERMEDIATE SHAFT UNDER FABRICATIONFINAL STATUSTIME:PULLEY :2 minCHAIN :1.5 minTWO STAGE :1 minOVER ARM:17 SecDEHUSKED 8 COCONUTS TILL DATE
VIDEO
COST FACTORFINAL COST :Rs 5000/-
MARKET PRICECOST OF PNEUMATIC SYSTEM:Rs 20000/-COST OF HYDRAULIC SYSTEM:Rs 30000/-COST OF ELECTRIC SYSTEM:Rs 40000/-MACHINE DEVELOPED BY KERALA GOVT INITIATIVE:Rs 75000/-
FUTURE SCOPE & MODIFICATIONSREDUCING SPEED OF MOTOR: 8 POLE MOTORPOWER OF MOTOR MUST BE INCREASED:2 HpDISTANCE BETWEEN SHAFTS MUST BE INCREASEDLENGTH OF SHAFTS MUST BE INCREASEDHOPPER ARRANGEMENT CAN BE PROVIDEDADVANTAGES ON MODIFICATIONFast operationLess manpower requirementLabour requirement minimumCan be clubbed along with husk shredding units for mass productionNuts per hour high compared to pneumatic and hydraulic systemsCost less compared to pneumatic and hydraulic systems
CONCLUSIONTHROUGH THIS PROJECT WE WILL BE ABLE TO OFFER LOW COST DEHUSKING SOLUTIONMAXIMUM SCRAP UTILISATION120 TO 200 NUTS PER HOURON APPLYING MODIFICATION WE CAN MAXIMIZE DEHUSKING EFFICIENCYREDUCE SPEED OF ROTATIONIMPROVE TORQUE THANK YOU