A motorized rice de-stoning machine was designed, fabricated and evaluated for performance. The traditional method of rice de-stoning machine characterized with a lot of deficiency in terms local rice containing smaller stones during de-stoning operation. A lot of energy is expended in solving the problem of operation. The rice de-stoning consists of the following part: Hopper, Vibrating Sieve, Machine Frame, Pulley, Eccentric Shaft, and Blower. The factors investigated were feed rate (500g/min) and variety off rice (Bokola, Kodoqiche, AlhajiA’aba). The result of the evaluation reveals that in Stone Separation Efficiency the third variety has the highest efficiency of (77.3%) and the first variety has the lowest efficiency of 72.6%, while in Rice separation efficiency the third variety also has the highest efficiency of 81.0% and the second variety has the lowest efficiency of 79.0%, the Impurity levels after separation are 7.8%, 7.5% and 6.5% respectively, the Tray losses remains the same. The rice de-stoning machine was powered by 1hp electric motor and the cost of production was estimated to be 108,700.
Title page
Certification
Dedication
Acknowledgement
Abstract
Table of content
CHAPTER ONE
1. INTRODUCTION 1
1.1 Background of the study 1
1.2 Aim and Objective of the project 3
1.3 Justification of the project 3
1.4 Scope of the project 3
CHAPTER TWO
2. LITTERATEUR REVIEW 4
2.1 De-stoning of rice 4
2.2 Rice production in Nigeria 4
2.3 Rice processing 7
2.4 Traditional method of processing rice 7
2.5 Modern method of processing rice 7
2.6 Method of de-stoning 8
2.7 Local method of de-stoning rice 9
2.8 Modern method of de-stoning rice 9
2.9 Review of existing work on rice destining rice 11
CHAPTER THREE:
MATERIALS AND METHOD 13
3.1 Description of the machine 14
3.2 Design Consideration of the machine 14
3.3 Design Calculation and analysis 14
3.4 Material Selection 19
3.5 Fabrication Procedure and Assembly 20
3.6 Principle of Operation 21
3.7 Bill of Engineering Measurement and Evaluation (BEME) 23
3.8 Performance Evaluation 24
CHAPTER FOUR
RESULT AND DISCUSSION
4.1 Result and Discussion 26
CHAPTER FIVE
CONCLUSION AND RECOMMENDATIONS
5.1 Conclusions 28
5.2 Recommendation 28
Reference 29
Appendix 31
Development And Performance Evaluation Of Rice Destoning Machine. (n.d.). UniTopics. https://www.unitopics.com/project/material/development-and-performance-evaluation-of-rice-destoning-machine/
“Development And Performance Evaluation Of Rice Destoning Machine.” UniTopics, https://www.unitopics.com/project/material/development-and-performance-evaluation-of-rice-destoning-machine/. Accessed 22 November 2024.
“Development And Performance Evaluation Of Rice Destoning Machine.” UniTopics, Accessed November 22, 2024. https://www.unitopics.com/project/material/development-and-performance-evaluation-of-rice-destoning-machine/
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