DESIGN AND FABRICATION OF RECIPROCATING PUMP
R.LOKESH (21605114020) G.SATISH KUMAR (21605114040)
M.SELVAMUTHU KUMARAN (21605114042) M.VELLAI DURAI (21605114052)
In partial fulfillment for the award of the degreeof
BACHELOR OF ENGINEERINGin
MECHANICAL ENGINEERINGSAVEETHA ENGINEERING COLLEGE
THANDALAM CHENNAI 602105ANNA UNIVERSITY CHENNAI - 600025.
BY
INTRODUCTION
In an ordinary hand pump a lever is used to pump out the fluid which requires larger work load.
This is the modification of ordinary hand pump in which we have used a crankshaft instead of the lever.
Our pump can be operated by one hand itself.
INITIAL DESIGN
This is the initial design made by us.
In this pump we replaced the lever with the crank shaft.
We kept the discharge at the top of the cylinder thus work load get decreased here.
MECHANISM
The mechanism used here is single slider crank mechanism
In this piston acts as a slider.
Crank shaft gives the rotating motion.
DESIGN CALCULATION
Pressure built inside the cylinder
(P) = ( W/Ao ) + Q*g*h
Stroke Volume (V) = (∏/4)* di
2 *L
Moment on the flange (M) = W crank * L flange
Connecting Rod length (L) = 1.5*R
Load required =70N to pull the piston
Pressure (P) =6.9651 bar
Discharge =615.75mm2
Area
Discharge =0.5 Litres volume
Moment on =1300 N-mm
the flange
MATERIAL SELECTION
CYLINDER HEAD
MATERIAL USED: CAST IRON (GRADE 25)
YOUNG’S =1X105 N/mm2
MODULUS
TENSILE STRESS =250 N/mm2
BRINELL =220 HARDNESS
MATERIAL SELECTION
CYLINDER
MATERIAL USED: Stainless Steel
YOUNG’S =2.1X105 N/mm2 MODULUS
TENSILE STRESS =700 N/mm2
BRINELL =241 HARDNESS
MATERIAL SELECTION
OTHER COMPONENTS
MATERIAL USED: MILD STEEL
YOUNG’S =2.1*105N/mm2 MODULUS
TENSILE STRESS =700 N/mm2
BRINELL =200 HARDNESS
FINAL DESIGN
The crank and connecting rod should be designed first
Based on that supporting brackets are designed
Finally all fabrication calculations are made and final design is completed
PROCESS INVOLVED
>> CUTTING: >> DRILLING:
>> REAMING: >> WELDING:
ASSEMBLY
Piston is mounted inside the cylinder.
The head and bottom is screwed between the cylinder.
Crank and connecting rod are screwed together.
Crank assembly and cylinder assembly is screwed together with supporting rod.
All the accessories are assembled finally
PRODUCT SPECIFICATION
Cylinder diameter : 70mm Stroke length : 160mm Discharge diameter : 29mm Crank radius : 80mm Connecting rod length : 120mm Length of the cylinder : 216 mm Water discharged per stroke : 0.5 Liters Net weight : 5.2Kg
COST ANALYSIS
COST OF THE PRODUCT
Total cost of the product =Rs 700
PRICE OF THE PRODUCT
A profit of 13% is added to the cost price of the product as market value of the product.
Market price of the product=Rs 800
BOLTS (4 No) = Rs 10 CIRCULAR ROD = Rs 30 SUPPORTING RODS = Rs 100 PISTON & WASHER = Rs 50 CYLINDER HEAD x 2 = Rs 200 M.S SHEET METAL = Rs 150 CONNECTING ROD = Rs 30 PAINT = Rs 30 LABOUR COST = Rs 100 ___________________________ TOTAL COST = Rs 700
APPLICATIONS
Villages To Pump out all types
of liquids Ideal for handling of
inflammable liquids For emptying pools,,
clogged drains, sewage tanks, effluents etc.
DURING THE PROCESS
DURING THE PROCESS
CONCLUSION
This pump is only initial model for giving feed by rotating motion.
Operation in this model is made easier by giving rotating motion.
On further modification effective usage can be obtained by this model.
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