1. DESIGN AND FABRICATION OF RECIPROCATING PUMP
R.LOKESH ( ) G.SATISH KUMAR ( ) M.SELVAMUTHU KUMARAN ( ) M.VELLAI DURAI ( ) BY
In partial fulfillment for the award of the degree of
BACHELOR OF ENGINEERING in
MECHANICAL ENGINEERING
SAVEETHA ENGINEERING COLLEGE
THANDALAM CHENNAI
ANNA UNIVERSITY CHENNAI

2. 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.

3. 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.

4. MECHANISM The mechanism used here is single slider crank mechanism
In this piston acts as a slider.
Crank shaft gives the rotating motion.

5. DESIGN CALCULATION Pressure built inside the cylinder
(P) = ( W/Ao ) + Q*g*h
Stroke Volume
(V) = (∏/4)* di2 *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) = bar
Discharge =615.75mm2
Area
Discharge =0.5 Litres
volume
Moment on =1300 N-mm
the flange

6. MATERIAL SELECTION CYLINDER HEAD MATERIAL USED: CAST IRON (GRADE 25)
YOUNG’S =1X105 N/mm2 MODULUS
TENSILE STRESS =250 N/mm2
BRINELL =220 HARDNESS

7. MATERIAL SELECTION CYLINDER MATERIAL USED: Stainless Steel
YOUNG’S =2.1X105 N/mm2
MODULUS
TENSILE STRESS =700 N/mm2
BRINELL =241
HARDNESS

8. MATERIAL SELECTION OTHER COMPONENTS MATERIAL USED: MILD STEEL
YOUNG’S =2.1*105N/mm MODULUS
TENSILE STRESS =700 N/mm2
BRINELL = HARDNESS

9. 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

10. PROCESS INVOLVED >> CUTTING: >> DRILLING:
>> REAMING: >> WELDING:

11. 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

12. 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

13. 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

14. APPLICATIONS Villages To Pump out all types of liquids
Ideal for handling of inflammable liquids
For emptying pools,, clogged drains, sewage tanks, effluents etc.

15. DURING THE PROCESS

16. DURING THE PROCESS

17. 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.