Design and construction of a motorized carrot chopping machine for the food service industry/ Kiiza, Henry.

'I:AB~E OF CONTENTS
ABSTRACT ..;, , ·i
DECLARATION ..~.: , , \ ii
APPROVAL AL , ; , iii
. ' . '.. .' '.
ACl<.ACKNOWLEDGEMENT , , , , , -r: : ••.••.
Y
CHAPTER ONE: Introduction , « , •• ;., , •••••••••
4
1..0 Introduction , , ,.· i 4
1..1 Background of the study , , ;., " 4
1.2 Problem statement ,.,. ; , ; , , 5
1..., 1 M '. "b" .. 6 ....). aln
0 jecnve , : , , , .
1 3. peel c 0 .~ec.. ? S· ifi .bi ti . ves : :, , , ; , ..
6
1:4 Justification ~ ,
6
1.5 Purpose of Study , · · ~.i~
6
1.6 Scope of Study , , , " ; · ; ; ;.·6
CHAPTER TWO:. LITERATURE. REVIEW , , .: 7.
·2.0 Literature review , 7
2.1 Carrot Profile .: ; ~ ,
7
2.1.1 Carrot production in Uganda 7
2.1.2 Carrot varieties.. ~ ,.;, ,•..., ,
T
2.1.3 Food value of.Carrots · ; ·.·.,..~ , 8
2.1.4
Nutritional and health benefits of carrots , , , , 9'
'2'.2 Post Harvest Operations on carrots : ~ :
U
2.3 Overview of Existing Carrot Chopping.Methods , -: , 1.1

23.·1 Hand chopping using a knife · ; ...; 7 , •• ~ 11
23.2 Chopping with a carrot grater , ;•............, p
2.3'.3 Manually operated' carrot chopping machine., ......•........................ " 1.2
2.3.4 Electrical Carrot chopper ..; ;., ; "~ ~., 13
2..3:5:· Motor driven carrot chopping machine , ~ 13
_.; '.. uttmg : :.;~ , , : : ~ , :..,............................. . ? 4'C ... . '14
2.4.1 Cutting geometric principles , , 14
2.4;.1 Mechanics of cutting ~ : :,.: : ~ r , 15
2.5. Material Selection .: . , 15
CHAPTER ~: METHODOLOGY ~.~.!•••••••••~ ~..~iI!";•.•~ ~ ~•••••••••• " ~ •••••• ~. 1.7
3.0. Methodology ,"' ' "••.~..•~.:~..........••...6;~ ~.ri••: ~ ,.,•••••• ~•••••••••••••.••••••• ~••••••• ;~. 17
3.1 specific objective 1:'Design of the Prototype Components 17
3.'1.1 Design considerations " ~ 17
3 1 ') D "'.' f prototype. components ,' , .
3.1.3 Power requirements of the machine , , 22
3')._ peCI C 0 S ifi bie ". jectrve z: rototype a ncanon ~. ssem Pro . Fabri ." d A 'bIy ~ ~ :., , -''''' ??
3.2.1 Materials selection ; " 24
-3.2.6 Mode of operation of the machine ~ , ,.., ~ ~ 24
3j Specific objective J: Performance Evaluation , ~•..•.....::. 25
'" .~ bl . 4' .).4 specific objective Economic Evaluation 1 • . 01f the Prototype _76
4.0 CHAPTER FOUR: RESULTS AND DISCUSSION 27

4.1 RESULTS AND DISCUSSION ~.....•....•.............•..•... ~ ; 27
4.1.1 Design of collecting hopper and inlet hoppers 27
4.1.2 Design of the ..Cutting Blade ; ; ; ; ~......•....; 28
4.1.3.:Design of Driven pulley ;..•.....•.•~ ~ : 29
4?F._ oree requirement .'. 0.·fth. e·mac. achinen~ ; , ; "9;t.. .4.3 Power delivered by the shaft 30
4,4 The shaft design ~ ~ , :3 t
4.4.1 Determining the minimum diameter of the Shaft ; 31
4.._4 ? Termination ". o.f·ang1eo.. f twist . 0ftl. re shaft , .J._ """
4.4.3 The factor of safety of the designed shaft 33
4.5·Belt Selection ., , , 33
4.5; 1Reasons for choosing the v-belt 34
.4.·.6 Design -.offrame., _ , , ·•......: 4. 3·4
4.7 Designof the Cuttingblades , , , ~ .' , J6
4.9 Performance evaluation of the machine 37
4.9.1 Testing of the. prototype ~ ~ ; ~ ·; 37
4.10 Theoretical machine efficiencv~
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~
.. ; .. 38
4.11 Chopping efficiency ; ; 38·
4.12 Economic evaluation of'the prototype ~ 40
4.12.1 Master budget for production of the carrot chopper 40
4 ..12 .2.·;Salvage value , ~ 4·1
4: 1.1.3 Depreciation ,~ , ~.•..•......... ~ 4.1
4 ~1_." 4.T·Ou;u ·......:1· annul a1 operating.cost .• . r ~ :.. 4·1.. 4..12.5 Total revenues · ~.. 41
4.12; 6 Comparison between machine method and hand .knife method .. ! ~ 4 J

Includes bibliographies and appendices

https://ir.busitema.ac.ug/handle/20.500.12283/1982