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Design And Fabrication Of Motorized Operated Groundnut Decorticating Machine
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CHAPTER FIVE
4.0 DESIGN CALCULATION
4.1 SPEED RATIO ANALYSIS
The following evaluation for belt and pulley
Sn/Sr = Dr/Dn -----------------------(1)
Where Sn= Speed of driven pulley in rpm
Sr= Speed of driven pulley in rpm
Dr= Diameter of the driver pulley in cmm)
Sr= 1440rpm
Sr=w=2Ï€/60 1440= 150.819rad/sec
Dn=300mm
Dr= 100mm
Sn=?
Substitution the values into equation we obtain
Sn= 100/300 x Sr
= 100/300 x 1440/60 x 2Ï€rad/sec
= 50.30rad/sec
SPEED RATIO= 50.819/50.30 = 3:1
4.2 MECHANISM LINK ANALYSIS
The mechanism of the machine drive is shown in the appendix A, it comprises of 4 mechanical link elements, having and 4 joints.
L=4, J=4 and P=4.
Substituting these values in the two equations,
L=
2p-4 -------------------------------------------(2)
[2009]
4=2x4-4
=4
J= (3L=2)/2 ------------------------------------------(3)
(2009)
4= 3/2 x 4
=6-2
=4
This shows that the mechanism in a perfect mechanism chain.
4.3 VELOCITY DIAGRAM ANALYSIS
The position of the mechanism atain instance is shown in appendix 1. The velocity of point A on the pulley link.
V= roo -------------------------------------(4)
=0.065x50.30
=3.270m/sec
In the direction shown in appendix A tangential as the link OA rotate in the clockwise direction. Tangential velocity Vb is horizontal in the direction below shown. The velocity of link AB is the direction perpendicular to it. We then obtain the velocity diagram drawn in fig 2. We measured out Vb as 1.03m/s Vab is also measure as we measured out Vb as 1.03m/s Vab is also measured as Vab = 2.687m/s
Fig3 show the instanameous centre 1 at which the link AB rotate
4.4 POWER ANALYSIS
Element DA represent the driven pulley weighting 6.5kg element AB is a 25mm diameter steel pipe of 4mm thickness weighing 1.5kg.
Element represent the leader assembly weighthing 8.9kg
Angular speed of OA= 50.30 rad/sec
Angular speed of AB= Vab/AB = 2.687/0.557
=4.824rad/sec
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ABSRACT - [ Total Page(s): 1 ]ABSTRACTShelling farm products are major essential in human needs on their various, duration, fashionable on affordable groundnut decorticator machine power operated through the use of link mechanisms that allows quick return motion in order to eradicate the use of hand, pestle and mortal, manual shelling machine operated. Groundnut decorticator machine with the ability of shelling quality groundnut with high durability at a price affordable to an average Nigerian has been a problem. This projec ... Continue reading---
TABLE OF CONTENTS - [ Total Page(s): 1 ]TABLE OF CONTENTTitle Page Approval PageDedicationAcknowledgementAbstractTable of contentCHAPTER ONE1.0 Introduction1.1 Literature Review & Background of Groundnut Decorticator 1.2 Aim’s & Objectives of groundnut Decorticator.1.3 JustificationCHAPTER TWO2.0 Analysis of Alternative to Motorized Operated Groundnut Decorticator2.1 Traditional Method of Decorticator2.2 Handling Metho ... Continue reading---
CHAPTER ONE - [ Total Page(s): 1 ]CHAPTER ONEINTRODUCTIONGroundnut decorticator is a machine used in decorticating or shelling groundnut, shelling is the removal of kernel from pods. The spectacular increase in the use and number of hand operated decorticator throughout the northern states in Nigeria coupled with the poor quality of decorticated groundnut generally seen has made it necessary to recommend practices on the general operation and adjustment of the common hand decorticators So the manufacturing engineers brain ... Continue reading---
CHAPTER TWO - [ Total Page(s): 2 ]CHAPTER TWO2.0 ANALYSIS OF ALTERNATIVES TO MOTORIZED OPERATED GROUNDNUT DECORTICATING MACHINEGroundnut decorticator machine is a means of shelling groundnut i.e removal of kernel from pods, it has many alternatives. Alternative in the sense that those other things that can be used in place of motorized groundnut decorticator machine These alternative are as follow  Hand, mortar, pestle and sack Manual operated decorticated machine2.1TRADITIONAL METHOD OF DECOR ... Continue reading---
CHAPTER THREE - [ Total Page(s): 3 ]CHAPTER THREEGENERAL DESCRIPTION AND ITâ€S WORKING PRINCIPLEIt
consist of a hopper, double crack lever mechanism an oscillating sector
with sieve bottom and motor all fixed on a frame. A number of cast iron
peg assemblies are fitted in the oscillating sector and the fixed
perforated concave screen. The decorticated sheller and kernel fall
downward through perforated concave sieve. The kernel are collected
through the spot at the bottom, the shell are throw away after the
opera ... Continue reading---
CHAPTER FIVE - [ Total Page(s): 2 ]CHAPTER FIVE SELECTION OF MATERIALSIn the engineering sphere, to achieve the desire standard, strong valuable and very attractive high quality product. The selection of material for any fabrication work must be one as its best. The selection of material is therefore should be based on the properties of that material is to be used in relation to the purpose for which the project is giving to serve.Similarity the withstand certain amount of wad and the durability of such material should be sel ... Continue reading---
CHAPTER SIX - [ Total Page(s): 1 ]CHAPTER SIX6.0 CONCLUSION Groundnut is one of the major cash crop that is widely grown in Nigeria because of its value as foreign exchange earner and has increase continues to generate interest. Shelling of groundnut is done locally as cracking the pod by hand, using mortal and pestle which are laborious and time consuming. This reason has call for the fabrication energy cost involving in traditional ways of shelling groundnut. The efficiency of the design fabrication groundnut ... Continue reading---
REFRENCES - [ Total Page(s): 1 ]REFERENCES1. Ayantola, A.A (2009); “Ifand Manual on Design of machine elements†Kwara State polytechnic Ilorin Department of mechanical Engineering pp 10-17 and 39-54.2. Ebenezer Clement, (20100; “Fabrication of a Groundnut decorating/Decorticator (manual Operated) machine protect Report for the Award of national diploma in Agricultural Engineering.3. John Bold, (1976); Tools for Agricultureâ€, A buyer’s avoid to low cost agricultural Implements Lo ... Continue reading---
