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.