ABSTRACT
This project (construction of a simple size reduction machine) it was constructed locally with the use of local materials and tools in I. M. T. mechanical engineering workshop. The various parts of the equipment were constructed separately using mild steel before finally coupled.
During the construction, the conveyors and its housing where first constructed. It consists of a shaft with helical rod wound round it. The paper was measured out and welded from a mild steel sheet of length of 320mm by 60mm with a thickness of 1 mm and it has the following dimension:
Height of hopper- 160mm Upper part of the hopper – 140mm diameter
Lower part of the hopper – 100mm diameter
The conveyor was fixed into its housing and welded to the shaft. The grinding chamber was 0welded separately and coupled to the grinding discs. The pressure screw fabricated was welded to the hopper. The U channel was joined to the base stand by welding and existing setup the bearing pulley and the manual handle were all coupled.
It was filled to smoothen the sharp edge and finally painted for corrosion resistance.
After the construction work test run was carried out using the grains of wet maize and dried maize. The result shows a greater efficiency in using wet maize.
Also the high level of noise observed during the test was reduced by fabricating the essential parts with grease.
TABLE OF CONTENTS
TITLE PAGE i
LETTER OF TRANSMITTAL ii
CERTIFICATION/APPROVAL iii
DEDICATION iv
ACKNOWLEDGMENT v
ABSTRACT vi
TABLE OF CONTENTS vii
CHAPTER ONE
1.0 INTRODUCTION 1
1.1 BACKGROUND OF THE STUDY 1
1.2 STATEMENT OF THE PROBLEM 3
1.3 PURPOSE/AIM/OBJECTIVES OF THE STUDY 4
1.4 SCOPE AND LIMITATION OF THE STUDY 5
1.5 METHOD OF RESEARCH 7
1.6 SIGNIFICANCE OF THE STUDY 7
CHAPTER TWO
2.0 LITERATURE REVIEW 9
2.1 HISTORY OF CONSTRUCTION AND USES OF SIZE REDUCTION EQUIPMENT/MACHINE 9
2.2 THEORY OF OPERATION OF SIZE REDUCTION 11
2.3 FACTOR THAT AFFECT T HE EFFICIENCY OF SIZE REDUCTION MACHINE 14
2.4 TYPES OF SIZE REDUCTION EQUIPMENT 16
2.5 CRUSHES 17
2.6 APPLICATION OF REDUCTION EQUIPMENT LIKE FRUIT JUICE CRUSHER/EXTRACTOR 20
2.6 FACTORS AFFECTING JUICE CRUSHING EXTRACTOR/MACHINE 23
CHAPTER THREE
3.0 CONSTRUCTION METHODOLOGY 25
3.1 SELECTION OF MATERIAL FOR CONSTRUCTION 25
3.2 CONSTRUCTION PROCEDURE 27
3.21 MAKING OUT OPERATORS 27
3.22 EQUIPMENT USED FOR MAKING OUT 28
3.3 CUTTING OPERATORS 29
3.4 PRESS SIZE REQUIREMENT FOR CUTTING 30
3.5 PUNCHING/DRILLING OPERATION 31
3.6 WELDING JOINING OPERATION 32
3.7 ARC WELDING 32
3.72 ELECTRODES USED IN WELDING 34
3.73 SPECIFICATION OF WELDING ELECTRODES 34
3.8 SEQUENCE OF OPERATION 36
3.81 THE ROTATING SHAFT AND CONVEYOR HOUSING
3.82 HOPPER 37
3.83 SQUEEZE CHAMBER 38
3.84 PLATE GAP AND ADJUSTMENT SCREW 38
3.85 STANDING 39
3.86 DRIVEN PULLEY/PRIME MOVER 39
3.86 SURFACE FINISHING AND COATING 40
3.87 SAFETY OF THE OPERATION 40
3.91 PRECAUTIONS 41
CHAPTER FOUR
4.0 TESTING OF JUICE EXTRACTOR 42
4.1 PERFORMANCE EVALUATION 42
4.2 RESULTS 44
CHAPTER FIVE
5.1 DISCUSSION 47
5.2 CONCLUSION 51
5.3 RECOMMENDATION 52
REFERENCES
