This is a thesis on the improvement of an S1 grinding machine. It has an overview from description of machine, material selection, design and a developed summary to help understand how improvement can be made.
ABSTRACT
The need for improved productivity in the agricultural industry cannot be over-emphasised. One of the key factors that influence this is increased availability of feed for animals. The use of mixing machines rather than hand-mixing ensures greater availability of feed, greater mixing ratio and, ultimately greater productivity in animal husbandry. This project was undertaken to make an improvement on the S1 Model Mixer with a view to improve the mixing ratio, the time of mixing and the effectiveness of mixing. The construction and performance evaluation of an improved S1 Poultry Feed Mixer was, thus, done. The S1 Feed Mixer consists of a frame, mixing chamber, blades, Pulley, discharge tunnel, V-belts, bearings and a hopper. The S1 Feed Mixer was evaluated in terms of mass flow rate, and efficiency of conveyor. Results show that the mass flow rate is optimal in the improved S1 Model and the conveyor efficiency is improved from 75.8 percent in the original S1 Model to 82.26 percent in the improved version. This is due to modification on mixing chamber. Compared to the Earlier S1 Feed Mixer Model the mixing ratio is preferred due to its quality of mixing. The evaluation of the S1 Feed Mixer shows that it can be used for both small scale and large scale mixing of Feeds.
TABLE OF CONTENT
TITLE PAGE - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - i
APPROVAL PAGE - - - - - - - - - - - - - - - - - - - - - - - - - - - - ii
DEDICATION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - iii ACKNOWLEDGEMENT - - - - - - - - - - - - - - - - - - - - - - - - - iv
ABSTRACT - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - v
LIST OF FIGURES - - - - - - - - - - - - - - - - - - - - - - - - - - - - vi
LIST OF TABLES - - - - - - - - - - - - - - - - - - - - - - - - - - - - vii
TABLE OF CONTENT - - - - - - - - - - - - - - - - - - - - - - - - - - viii
CHAPTER ONE: INTRODUCTION
1.1 General Overview - - - - - - - - - - - - - - - - - - - - - - - - - - - - -1
1.2 Background of study - - - - - - - - - - - - - - - - - - - - - - - - - - - 1
1.3 Statement of problem - - - - - - - - - - - - - - - - - - - - - - - - - - - 2
1.4 Aim and Objectives - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2
1.5 Scope of Study - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2
CHAPTER TWO: LITERATURE REVIEW
2.1 Literature Survey- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3
2.2 Mixer - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3
2.3 Solid mixing - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4
2.3.1 Material handling - - - - - - - - - - - - - - - - - - - - - - - - - - 4
2.3.2 Mix time - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4
2.3.3 Mixer volume - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5
2.4 Classification of Mixers - - - - - - - - - - - - - - - - - - - - - - - - - - 6
2.5 Mechanical features and Components of Mixers - - - - - - - - - - - 10
2.6 Comparison between the S1 model and the proposed model - - - - - - - - - - - -11
2.7 Mixer Loads - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -11
2.8 Design review - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 12
CHAPTER THREE: DESIGN AND FABRICATION METHODOLOGY
3.1 Material Selection - - - - - - - - - - - - - - - - - - - - - - - -- - - - - 14
3.2 Design Analysis - - - - - - - - - - - - - - - - - - - - - - - - - - - - -14
3.3 Design Calculations - - - - - - - - - - - - - - - - - - - - - - - - - - - 15
3.3.1 Design of Mixing Chamber - - - - - - - - - - - - - - - - - - - - - 16
3.3.2 Pulley Diameter and Speed - - - - - - - - - - - - - - - - - - - - - - 20
3.3.3 Design of Shaft - - - - - - - - - - - - - - - - - - - - - - - - - - - -22
3.4 Construction procedure - - - - - - - - - - - - - - - - - - - - - - - - - 32 3.4.1 Principle of Operation - - - - - - - - - - - - - - - - - - - - - - - - - 33
CHAPTER FOUR: RESULTS AND DISCUSSIONS
4.1 Results of Tests - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 36
4.2 Cost Study - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 38
CHAPTER FIVE: CONCLUSION AND RECOMMENDATION
5.1 Conclusion - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 40
5.2 Recommendation - - - - - - - - - - - - - - - - - - - - - - - - - - - - 40
REFERENCES - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 41
LIST OF FIGURES
Fig.2.1: A Typical vertical mixer - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6
Fig.2.2: Schematic view of Mixers Classification - - - - - - - - - - - - - - - - - - - - - -9
Fig 2.3: Load on the Mixer Shafts (Courtesy of Chemineer.) - - - - - - - - - - - - - -12
Fig. 2.4 Side view of the S1 Feed Mixers - - - - - - - - - - -- - - - - - - - - - - - - - - - 12
Fig.3.1: Front view of the upper chamber - - - - - - - - - - - - - - - - - - - - - - - - - - 17
Fig.3.2: Primary Pulley Diagram - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -21
Fig.3.3: Secondary Pulley Diagram - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -21
Fig.3.4: Centrifugal Tension on the Belt - - - - - - - - - - - - - - - - - - - - - - - - - - - 26
Fig.3.5: FBD of the reacting Forces on the Shaft - - - - - - - - - - - - - - - - - - - - - - 27
Fig.3.6: 2-D drawing of the S1 (Prototype) Feed Mixer - - - - - - - - - - - - - - - - - 32
Fig.3.7: Section A-A view of the S1 (Prototype) Feed Mixer - - - - - - - - - - - - - -33
Fig.3.8: 3-D drawing of the S1 (Prototype) Feed Mixer - - - - - - - - - - - - - - - - - 34
Figure 4.1: Bar chart of cost analysis - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 38
LIST OF TABLES Table 3.1: Material Properties - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 14 Table 3.2: Improved S1 (Prototype) Feed Mixer Machine parts and Materials Used - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 14
Table 3.3: Specification on S1Model and prototype (Body) - - - - - - - - - - - - - - -16
Table 3.4: Point of maximum Deflections on the Shaft - - - - - - - - - - - - - - - - - -31
Table 3.5: Specifications on S1 (Prototype) - - - - - - - - - -- - - - - - - - - -- - - - - - 31
Table 4.1: Mixing Machine’s Performance in 5 minutes - - - - - - - - - - - - - - - - 36
Table.4.2: Mixing Machine’s Performance in 10 minutes - - - - - - - - - - - - - - - - 37
Table 4.3: Average weight - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -37
Table 4.4: Cost for S1 (Prototype) Feed Mixer Parts - - - - - - - - - - - - - - - - - - - 38
Emezue, F. (2019). IMPROVEMENT AND CONSTRUCTION OF A PROTOTYPE OF AN INDUSTRIAL (S1 MODEL) POULTRY FEED MIXING MACHINE. Afribary. Retrieved from https://afribary.com/works/bachelor-thesis
Emezue, Faith "IMPROVEMENT AND CONSTRUCTION OF A PROTOTYPE OF AN INDUSTRIAL (S1 MODEL) POULTRY FEED MIXING MACHINE" Afribary. Afribary, 21 Aug. 2019, https://afribary.com/works/bachelor-thesis. Accessed 26 Apr. 2024.
Emezue, Faith . "IMPROVEMENT AND CONSTRUCTION OF A PROTOTYPE OF AN INDUSTRIAL (S1 MODEL) POULTRY FEED MIXING MACHINE". Afribary, Afribary, 21 Aug. 2019. Web. 26 Apr. 2024. < https://afribary.com/works/bachelor-thesis >.
Emezue, Faith . "IMPROVEMENT AND CONSTRUCTION OF A PROTOTYPE OF AN INDUSTRIAL (S1 MODEL) POULTRY FEED MIXING MACHINE" Afribary (2019). Accessed April 26, 2024. https://afribary.com/works/bachelor-thesis