MICROFICHE REFERENCE LIBFUUW - Cd3wd.com

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WELLPIPEONNECTING -ROD-0ETACHABLHANDLEELECTRICMOTORGEARJACKBUCKET+PISTONIELLPEfj ) ) B STRAINERFigure 3.14 Pump head for mechanical or manual powerwith double-acting, bucket-pump
60Among the simplest designs for a bucket-pump is the “inertia handpump” described in VITA’s Village Technology Handbook (1975). It isconstructed primarily of scrap materials such as scrap barrel metal andinner tube rubber,and can be made by any craftsmen with the proper tools,e.g. a tinsmith. It is reported to lift 20-30 gpm with a 13 ft head and60-75 gpm with a 3.3 ft head. Because this design used scrap material,no cost estimate is given.The Peace Corps, working through such agencies as AID, the BattelleMemorial Institute, UNICEF, and CARE, saw the need for a simple, inexpensive,and dependable hand pump. Specifically, they were looking for a pump ’design with the following features (Peace Corps, 1975);low production cost,long life under severe conditions,easy maintenance with simple tools and unskilled labor,suitable for shallow- or deep-well applications,manufacture in developing countries,easily operated by small people, including women and children,andable to discourage pilfering and vandalism.With these objectives, a pump-- shown schematically in Figure 3.12--wasdeveloped which had a strong cast-iron cylinder, stand, and handle. In aneffort to eliminate poor-wearing leather seals, several synthetic materialswere suggested as good substitutes, e.g. nylon, Corfam, Rek-Syn, etc.However, an effort was also made to allow the standard design to beadaptable to locally manufactured parts if imported, <strong>com</strong>mercial materialswere unavailable. Pumps of several different <strong>com</strong>ponent materials weretested with up to the equivalentof 10 years of hard use and the various
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MICROFICHEREFERENCELIBFUUWA project
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TABLE OF CONTENTS:.LIST OF FIGURES
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LIST OF FIGURES (CONT)Figure3.163.1
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LIST OF TABLESTable2.12.2a2.2b3.13.
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2find both new water lifting device
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4During the 3rd centuryB.C., Archim
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GIn 1698, Thomas Savery obtained a
Page 16 and 17: 9the United States was starting set
Page 18 and 19: 11engines, motors, transmissions, e
Page 20 and 21: Chapter 2Water LiftingPrinciples2.1
Page 22 and 23: 15Table 2.2a Classification of wate
Page 24 and 25: 2.2.1 Discharge or Capacity (Q)Disc
Page 26 and 27: (h) Drawdown (D) is the vertical di
Page 28 and 29: 21Tota I DynamicHeadI Total Static
Page 30 and 31: 23Vapor Pressure (P,)Suction Fricti
Page 32 and 33: Multiplying all these efficiencies
Page 34 and 35: 27NPSHR-Q, is also usually included
Page 36 and 37: 3.2.1.1 Bucket/BagUtilizing nothing
Page 38 and 39: handmade construction can be easily
Page 40: animal is returning to the top, the
Page 43 and 44: 363.2.1-S Counterpoise LiftThe coun
Page 45 and 46: 38to return the lever. Combinations
Page 47 and 48: 40Table 3.1Shadouf performanceLift
Page 49 and 50: (b)Figure 3.5 Scoop (a) used as sho
Page 51 and 52: ‘PIVOT-r- ----hFigure 3.6 Wzcer b
Page 53 and 54: 46water. The capacity of this devic
Page 55 and 56: - =7?=PIVOTCOUNTER WEIGHT\FLAP- VAL
Page 57 and 58: 50(a)ROLLER 7- HAND RAIL/SIDE - BY-
Page 59 and 60: 52flow in through a check-valve (e.
Page 61 and 62: 54exhaust valves for the steam (or
Page 63 and 64: 56Another significant difference be
Page 65: 58shaft), two other forms of these
Page 69 and 70: 62/HANDLEBARDISCHARGEHOSEfFOOTRE$TD
Page 71 and 72: HANDLE/CONNECTINGARMDISCHARGEFLAP V
Page 73 and 74: 663.3.1 WheelAfter many of the earl
Page 75 and 76: 68Table 3.2 Manually-operated paddl
Page 77 and 78: 70engine (2-3 hp) as the prime move
Page 79 and 80: 72Table 3.3 records some of the per
Page 81 and 82: 74Several names which are also appl
Page 83 and 84: 76Table 3.5Zawafa performanceLiftDi
Page 85 and 86: 78noria and the discharge and head
Page 87 and 88: 80enclosed circumference can also b
Page 89 and 90: 82Most early tympanums were of the
Page 91 and 92: 84Table 3.6Tympanum performanceDiam
Page 93 and 94: 86sufficiently compact and lightwei
Page 95 and 96: 88of 3000 gpm or 5000 psig. Dependi
Page 97 and 98: SE;vlI - ROTARYBUCKET VANEU’C)Fig
Page 99 and 100: 92(a)AIRCHAMBERAIR FEEDERVALVEWASTE
Page 101 and 102: 94Table 3.8Ram performanceA. Typica
Page 103 and 104: COMPRESSEDAIRDEAofpctI5LT1EDUCTC II
Page 105 and 106: 98FLASHTANK .iJI 10 -NON-RETURNVALV
Page 107 and 108: Because the components are not yet
Page 109 and 110: 102air-lift pumps. The oscillation
Page 111 and 112: 104and from the impeller and confin
Page 113 and 114: 106making this type pump useful for
Page 115 and 116: 90s; 80iTi!g 700E 60W50SPECIFIC SPE
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110to lubricate all or some of thei
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112such variables as impeller size,
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114GEAR HEADOR IVE SHAFTTO PRIME MO
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116W(clFigure 4.6 (a) Thai-style ou
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118DRIVINGSUCTIONDIFFUSERa- - =tQ,E
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DISCHARGELINE OISCHARGE RETURNLINEL
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-122which at $.20/kg, cost $6.00. H
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Table 5.1Manual power appl icat i a
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126water lifting device. Animals ar
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1285.4.1 WindWindmills are currentl
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130even saw use on the windy plains
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172HAL F CYLINDERSt------TO WATER L
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135a vertical shaft, the wind will
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--Table 5.3 Typical winchnil 1 clpp
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Table 5.4 Typical watermill applica
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141MEDIUM BREASTFigure 5.6 (a) Medi
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SLUICEGATEc, ~/I#/,.----- ------I L
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145-H-f -- WH---@II
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147with a 330,250 gpd capacity. Bat
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149Where electric power is not econ
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151electricity), the amount of use
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153of building and installing the d
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155II 300‘0083ooLoo93oo‘ootr000
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157Example G .l (after Molenaar, 19
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LOW LIFT VERTICAL PUA /lPI------PER
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Chapter 7Improvements and Research
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163example for further projects (Fa
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165Reynolds (1970) writes, " . ..ma
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16?BIBLIOGKAPlIYAddison, Ii., Ccntr
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169Committee on Water Supply Engine
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Gatz, C. A., Johnston Vertical Pump
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173Mother Earth News,1574.Ilandbook
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175Reynolds, I. II. , “High Duty
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177Svcndsen, M., "Irrigation Techno
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179APPENDIX
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Tabic;: A.2 Area conversions and ab
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Table A.4 Pressure conversions and
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Table A.6 Discharge conversions and
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Table'A.8 Specific speed (N,) conve
Page 195:
ABHPDD- area- brake horsepower- dia
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