1. Centrifugal pumps work by using centrifugal force to convert mechanical energy into hydraulic energy to move liquids through piping systems. They are the most common type of pumping machinery. 2. The main parts of a centrifugal pump are the impeller, casing, suction pipe with foot valve, and delivery pipe. Liquid enters at the center of the rotating impeller and is thrown outward by centrifugal force, converting kinetic energy into pressure energy. 3. Efficiency can be increased in multistage centrifugal pumps, which connect multiple impellers in series or parallel, allowing high heads or large discharges to be developed. Characteristic curves show the relationships between operating parameters.

1. MINE PUMP

2. 1. Principle
2. Main parts
3. Working mechanism
4. Efficiency
5. Advantage & disadvantage
6. Multistage
7. Characteristic curves of single stage centrifugal pump
8. Pump selection
Overview

3. Dynamic pump
Positive Displacement
pump
Pump
Centrifugal Pump
Peripheral Pump
Mixed Flow & Radial Flow
Rotary
Reciprocating Pump

4. First centrifugal pump invention by 1475 in a treatise
by the Italian Renaissance Engineer . The centrifugal
pump work on the principal of forced vortex flow.
Convert the mechanical energy into hydraulic energy
by centrifugal force on the liquid. Constitute the most
common type of pumping machinery. Used to move
liquids through a piping system
Introduction and Principle Of Centrifugal Pumps

5. Main Part Of Centrifugal Pump
I. Impeller
II. Casing
III. Suction Pipe With A Foot
Valve
IV. Delivery Pipe

6. Simplest piece of equipment in any process plant
Energy changes occur by virtue of impeller and
volute
Liquid is fed into the pump at the center of a
rotating impeller and thrown outward by
centrifugal force
The conversion of kinetic energy into pressure
energy supplies the pressure difference between
the suction side and delivery side of the pump
Working Mechanısm Of A Centrifugal
Pump

7. MANOMETRIC EFFICIENCY
Manometric head
man =
Head Imported By Impeller To Water
MECHANICAL EFFICIENCY
Rotor Or Impeller Power
mech =
Shaft power
OVERALL EFFICIENCY
Power Output Of Pump
o =
Power Input Of Pump

8. 1. Its initial cost is low
2. Efficiency is high.
3. Discharge is uniform and continuous
4. Installation and maintenance is easy.
Advantage Of Centrifugal Pump

9. • Cannot handle highly viscous fluids
efficiently
• Cannot be operated at high heads
• Maximum efficiency holds over a
narrow range of conditions
Disadvantage Of Centrifugal Pump

10. • When a centrifugal pump consist of
two or more impellers the pump is
know as a multistage centrifugal pump.
• Shaft or on different shafts is called
the Multistage centrifugal pump.
1. To produce a high head
2. To develop a high discharge
Multistage Centrifugal Pump

11. If a high head is to be developed the impeller are connected
in series or same shaft .
Total head developed= n × hm
where, hm = head developed by one impeller
n = no. of impellers in series
To Produce A High Head

12. If discharging large quantity of liquid the impeller are
connected in parallel
To Discharge A Large Quantity Of
Liquid
Total Discharge = N X Q

13. 1.Main characteristic curves
Characteristic Curves Of Single Stage
Centrifugal Pump
Main Characteristic Curves

14. If speed is kept constant, the variation of manometric
head, power and efficiency with respect to discharge
Operating Characteristic Curves

15. Head vs. Efficiency & Efficiency vs. Discharge
Constant Efficiency Curve

16.  The amount of fluid
 The properties of the fluid
 Type of power supply
 Cost and mechanical efficiency of the pump
Pump Selection

17. 1. Centrifugal pump is a kind of machinery used for pumping water
through the centrifugal movement
2. Positive displacement pumps will always be more efficient
than centrifugal pumps due
3. As a conclusion, we had obtained a performance curve at 3
different speed of pump by avariable characteristic. The efficiency
of pump have related to the losses mean energy during the process.
This efficiency will be increase if less loss occur.
Conclusion

18. Magnetic-drive Model 620-mc
Suction Port Size = 1.00 in
Discharge Port Size = 0.75 in
Impeller Diameter = 3.75 in
Impeller type = Open
Maximum speed = 3600 rpm
Maximum Flow Rate = 45 gpm
Maximum Differential head = 65 ft
Minimum Operating temp. = -40 F
Specifications of Centry® Series
Magnetic-Drive Centrifugal Pump

19. Maximum Operating Temp. = 500 F
Maximum Operating pressure- = 3002 PSI
Pump w/Threaded Ports & Bracket = 30 lbs
Pump w/Flanged Ports & Bracket- = 34 lbs
Power frame- = 16 lbs
S-Adapter- = 6.0 lbs

20. [1] Bachus L. and Custodia A., Know and understand centrifugal
pump, 1st ed., Amsterdam, The Netherlands, Elsevier Limited,
2006, pp. 6-12.
[2] Balasubramanya N., “Centrifugal Pumps”, e-notes, M.S.Ramaiah
Institute of Technology, Bangalore, pp. 1-27.
[3] “Centrifugal pump basics”, World Pumps, vol. 2005, Issue
460, Jan. 2009, pp. 37-59.
[4] S.R. Shah, S.V. Jain, R.N. Patel, V.J. Lakhera, “Centrifugal
Pumps: A Review of the State-of-the-Art”, Procedia
Engineering, vol. 51, 2013, pp. 715-720
References