Chapter 19 - Material Handling Systems Flashcards
1
Q
Why are there so many different types of conveying systems?
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2
Q
How is the type of belt determined?
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3
Q
What are the purposes for the following belt parts:
- top cover?
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4
Q
What are the purposes for the following belt parts:
- bottom cover?
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5
Q
What are the purposes for the following belt parts:
- carcass?
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6
Q
Describe the following carcass designs:
- solid woven
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7
Q
Describe the following carcass designs:
- reduced-ply
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8
Q
Describe the following carcass designs:
- multiple-ply
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9
Q
Describe the following carcass designs:
- steel cord
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10
Q
List the types of mechanical fasteners used to join conveyor belts
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11
Q
Briefly describe cold-splicing and hot vulcanized splicing and state which is stronger
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12
Q
How is the diameter and style of a pulley determined?
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13
Q
What is the purpose of a crowned pulley and where should it be used?
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14
Q
Briefly describe the head pulley
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15
Q
Briefly describe the following:
- lagged drive pulley
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16
Q
Briefly describe the following:
- smooth drive pulley
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17
Q
Briefly describe the following:
- self-cleaning drive pulleys
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18
Q
Define the following:
- tail pulleys
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19
Q
Define the following:
- snub pulleys
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20
Q
Define the following:
- bend pulleys
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21
Q
List the two basic types of idlers with a conveyor system
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22
Q
How is belt alignment achieved?
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23
Q
What are the advantages of troughing conveyors?
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24
Q
Where should a millwright begin when training a conveyor belt?
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25
Why are offset rollers used in troughing conveyors?
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26
What are the advantages of suspended idlers?
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27
What is the purpose of transition idlers?
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28
Where are flat-belt carrying idlers used?
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29
What is the purpose of rigid side-guide idlers?
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30
List the types of return idlers used on conveyor systems
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31
What are the purposes and locations of self-aligning idlers?
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32
Describe the principles of operation with regard to the troughed-belt training idlers and the return training idlers
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33
What is the purpose and location of impact idlers?
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34
What are the purposes of take-ups?
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35
Describe the following:
| - gravity take-ups
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36
Describe the following:
| - horizontal (carriage) take-ups
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37
Describe the following:
| - screw take-ups
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38
Describe the following:
| - pneumatic and hydraulic take-ups
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39
How is impact and abrasion minimized during the loading of a conveyor?
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40
What are the advantages of loading belts with a transition conveyor?
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41
Describe the procedure for loading a conveyor belt with a chute
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42
What conditions should be considered when designing a chute?
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43
What are the purposes of baffle plates, grizzlies and skirting?
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44
Describe the operating principles of the following:
| - screw feeders
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45
Describe the operating principles of the following:
| - belt feeders
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46
Describe the operating principles of the following:
| - drag-scraper feeders
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47
Describe the operating principles of the following:
| - apron feeders
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48
Describe the operating principles of the following:
| - reciprocating-plate feeders
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49
Describe the operating principles of the following:
| - control-gate feeders
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50
Describe the operating principles of the following:
| - vibrating feeders
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51
Describe the operating principles of the following:
| - rotary-vane feeders
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52
Describe the operating principles of the following:
| - rotary-drum feeders
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53
Describe the operating principles of the following:
| - rotary-table feeders
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54
What is the purpose of a tripper?
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55
Describe how belts are kept clean during operation
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56
How are magnetic and non-magnetic metals removed from the product of a conveyor?
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57
What are the purposes of the following:
| - weigh scales?
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58
What are the purposes of the following:
| - enclosure (hoods)?
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59
What are the purposes of the following:
| - backstops (inclined conveyors)?
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60
List the braking methods for declined conveyors
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61
How does the wrap-factor affect the drive pulley?
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62
Briefly describe single drives, tandem drives, dual drives and multiple drives
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63
What causes the following training problems:
| - belt runs off pulley?
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64
What causes the following training problems:
| - belt runs off at loading point?
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65
What causes the following training problems:
| - belt runs to one side throughout the entire length at a specific idler or group of idlers?
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66
What causes the belt to slip on starting?
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67
What causes the following fastener and vulcanizing problems:
| - belt breaks at or behind fastener, or the fastener tears loose?
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68
What causes the following fastener and vulcanizing problems:
| - vulcanized splice separates?
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69
What causes the following cover problems:
| - excessive top cover wear (including rips, gouges, ruptured and tears)?
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70
What causes the following cover problems:
| - excessive bottom cover wear?
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71
What causes the following cover problems:
| - broken edges?
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72
What causes the following cover problems:
| - longitudinal grooving or cracking of bottom cover?
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73
What would cause ply separation in the belt carcass?
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74
What are the buckets mounted on and what does a bucket elevator convey?
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75
Why is bucket speed critical in a centrifugal discharge elevator?
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76
How are continuous bucket elevators loaded?
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77
Compare super-capacity elevators to regular bucket elevators
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78
How are the buckets invert d in a positive-discharge elevator?
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79
Describe the following components:
| - casing
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80
Describe the following components:
| - head
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81
Describe the following components:
| - boot
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82
Describe the following components:
| - belt and chain
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83
Describe the following components:
| - bucket
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84
List the merits of screw conveyors
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85
What are the two basic types of screw conveyors?
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86
Briefly describe the following:
| - types of flights
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Briefly describe the following:
| - sectional flights
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Briefly describe the following:
| - double flights
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Briefly describe the following:
| - helicoid flights
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90
Briefly describe the following:
| - ribbon flights
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Briefly describe the following:
| - double flight ribbon
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92
Briefly describe the following:
| - cut flight
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93
Briefly describe the following:
| - paddle conveyor
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94
Briefly describe the following:
| - cut and folded screw flight
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95
Briefly describe the different pitches available for screw conveyors
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96
What are the reasons for different trough designs?
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97
How is the screw supported between the ends of the trough?
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98
How are these screw conveyors driven?
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99
What is the screw size for the following conveyor:
6H310LH?
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100
How are vacuum systems and pressurized systems utilized?
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101
Describe the operating principles of a vacuum conveying system
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102
Describe the purpose and operating principle of a rotary feeder
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103
How is the flow of regular size particulate material entering a vacuum system regulated?
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104
How is the material deposited at its destination from a vacuum system?
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105
Describe the operating principles of a low-pressure conveying system
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106
How is surging controlled in a gate locked feeding system?
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107
How is dust controlled with rotary feeders in pressurized system?
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108
Describe the operating principles of a medium-pressure system
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109
How does oil and moisture affect high-pressure fluidized conveying systems?
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110
How are fires and explosions prevented in high-pressure fluidized systems?
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111
Describe the operating principles of blow-tanks
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112
Describe the operating principles of vacuum-pressure conveying systems
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113
Describe the operating principles of air-slide gravity conveying systems
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114
What type of fan is used in a system where material passes through the fan?
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115
What type of material do roller and gravity roller conveyors move?
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116
What tasks are preformed by chain-driven live roller and belt-driven live roller conveyors?
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117
What are the advantages of roller bed conveyors ( belt riding on roller bed) compared to the other belt- and chain-driven roller conveyors?
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118
What is the purpose of feeder roller-bed conveyors and nose-overs?
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119
Describe the applications for the following:
| - straight rollers
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120
Describe the applications for the following:
| - bottle rollers
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121
Describe the applications for the following:
| - eccentric rollers
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122
Describe the applications for the following:
| - tapered rollers
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123
Which roller is most efficient for turning curves?
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124
What does the choice of material for roll cases and support structure depend upon?
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125
How is roller spacing calculated for roller conveyors?
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126
List the types of bearings used in conveyors
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127
What types of drives are used to drive roller conveyors?
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128
How are curves negotiated with roller conveyors?
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129
What type of belts are used with regard to belt conveyors?
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130
What type of materials are apron conveyors designed to carry?
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131
What positions will apron conveyors operate within?
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132
What type of service will apron conveyors with frame-supported rollers withstand?
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133
What type of buckets are used on apron conveyors?
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134
What materials do chain conveyors transport?
Note: The flight is the scraper attached to the chain on a flight conveyor
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135
What is used as the scraper (flight) in a drag conveyor?
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136
When removing a river, why is it sometimes necessary to drill a hole in the centre of the river on a conveyor chain after the head is ground off?
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137
How are head end sprockets adjusted to allow for chain wear and stretch?
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138
Describe tail end designs
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139
How are slurry mixtures transferred?
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140
What regulations must food handling conveyors conform to?
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141
Briefly describe the merits and/or applications of the following mesh belts:
- equalized weave, including special categories
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142
Briefly describe the merits and/or applications of the following mesh belts:
- conventional weave
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143
Briefly describe the merits and/or applications of the following mesh belts:
- flat wire belt
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144
Briefly describe the merits and/or applications of the following mesh belts:
- spiral belt
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145
Briefly describe the merits and/or applications of the following mesh belts:
- batter belting
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146
Briefly describe the merits and applications of the following synthetic belts:
- polypropylene
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147
Briefly describe the merits and applications of the following synthetic belts:
- acetal
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148
Briefly describe the merits and applications of the following synthetic belts:
- polyethylene
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149
Briefly describe the merits and applications of the following synthetic belts:
- nylon
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150
Briefly describe the merits and applications of the following synthetic belts:
- polymers
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151
What types of chain and flights are used in table-top belts?
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152
What materials are food handling sprockets made from and when should these sprockets be replaced?
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153
Which sprocket(s) are fixed to shafts?
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154
What type of bearings are best suited for intermediate bearings?
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155
Describe the function of belt carry-ways with both straight parallel and chevron style wear strips
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156
How is belt sag on the return run controlled?
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157
List the bi-directional conveyor designs
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158
What design changes are necessary for inclined conveyors?
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159
List the other conveyors used in food industry
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