DESIGN AND FABRICATION OF GROUNDNUT SHELLING MACHINE

ABSTRACT

Groundnut shelling machine was designed and fabricated at the department of Mechanical Engineering, institute of Technology, Kwara State Polytechnic Ilorin aimed at increasing shelling/decorticating efficiency and eliminating drudgery associated with the traditional method of -shelling groundnut and other developed method such as pedal operated methods. The machine is powered by a 1.5 horse power motor at a speed of 1440 revolution per minute. Performance investigation carried out show a good performance of the machine with decorticating efficiency, undecorticating efficiency, machine damage efficiency, cleaning efficiency and output capacity of 92%, 7.5°k, 3%, 85% and 120kg/hour respectively.

TABLE OF CONTENT

Title page i

Approval Page ii

Dedication iii

Acknowledgement iv

Abstract v

Table of content vi

List of Figures  vii

Nomenclature viii

CHAPTER ONE 

1.1 Introduction 1

1.2 Aim and Objectives of the Project 3

1.3 Justification of the  Project 3

1.4 Working Principle 5 CHAPTER TWO

2.0 Literature Review 6

2.1 Methodology 7

CHAPTER THREE 

3.1 Selection of materials Used 8

3.2 Beater Assembly 13

3.3 The Sieve 14

CHAPTER FOUR

4.0 Design Analysis 15

4.1 First Stage Design Consideration in New Machine            15

4.2 What is design           15

4.3 Why do we Design          18

CHAPTER FIVE

5.0 Design Calculator 20

5.1 Decorticating Unit Housing 20

5.2 Fan Blades 20

5.3 Pulleys 20

5.4 Design Calculations 20

5.5 Speed Ratio Analysis 21

5.6 Moment of inertia 21

5.7 Calculation of torque 22

5.8 Calculation of machine Drive power 2 3

5.9 Tension in the Belt 23

CHAPTER SIX

6.0 Advantage 28

6.1 Disadvantage            28

6.2 Application            28

6.3 Maintenance 28 

6.4 Autonomous Maintenance Activity            29

6.5 Cleaning            29

6.6 Cleaning is Inspection            30

6.7 Cleaning Process 30

6.8 Visual AIDS to Maintain Correct Equipment Condition            30

6.9 Adjust and Minor Repair            31

6.9.1 Adjust and Minor Sequences 31

6.9.2 The Path to perfect Safety 32

6.9.3 Chronic Defects 32

6.9.4 Equipment Improvement 32

6.9.5 Equipment Responsibilities of Operator 33

6.9.6 Precautions and safety measures 33

6.9.7 Precaution 34

6.9.8 Safety Measures 34

6.9.9 Recommendation for school                         34

6.9.10 Conclusion           34

          Reference 36