The document summarizes the 9 step process for manufacturing submersible pumps by Rotex, an Indian manufacturer. Key steps include making the diffuser bowls and impellers, balancing the impellers, making the shaft pipes and motor parts like the rotor and stator, assembling the pump by attaching the motor, impellers and other parts together, testing the pump parameters and performance, and finally painting and packaging the pump for distribution. The overall process involves casting, machining, balancing, winding, assembling and quality testing to produce a fully functional submersible pump.

1. GOVERNMENT POLYTECHNIC JALNA
“MANUFACTURING OF SUBMERSIBLE PUMP”
SUBJECT :- FLUID MECHANICS AND MACHINERY (22445)
CLASS. ME4ISS
GUIDED BY : H.M.PARGAONKAR

2. PREPARED BY…
Roll No. NAME Enrollment No.
27 Farhan Nadeem Khan 1916000064
29 Sayyed Aetesham Faroukh Ali 1916000066
35 Shaikh Zubair Naziruddin 1916000073

3. CONTENTS
• Introduction
• Different parts of Submersible pump
• Manufacturing

4. INTRODUCTION
• A submersible pump is similar to centrifugal pump having design similar to
diffuser or turbine pump with radial or mixed flow impellers.
• As the name indicates the pump and electric motor both are submerged in
water.
• This pump is used in Industries, Agriculture as well as for Domestic
application.
• In this presentation we will learn about the Submersible pump is
manufactured step by step with understanding the operations.
• The production is of “ROTEX” a Indian submersible pump manufacturer.

5. PARTS OF SUBMERSIBLE PUMP
• 1.Induction Motor
• 2.Impellers
• 3.Shaft
• 4.Diffuser
• 5.Non slam check valve
• 6.Casing

6. MANUFACTURING (STEP 1 : MAKING DISFFUSER BOWLS)
• They start by making diffuser bowls using urn shaped castings.
• The bowls hold the pump spinning impellers.
• Computerized tools refine their shape so the bowls fit neatly in the pump
columns.

7. MANUFACTURING (STEP 2 : CARVING THE IMPELLERS)
• Another set of tools carve the bronze impellers.
• They fine tune the casing so that the impellers will fit into the diffuser bowls .
• Here is a look at the both sides of the finished bowls.

8. MANUFACTURING (STEP 3 : BALANCING)
• A technician uses this machine to check
for imbalances.
• When sensors locate the problem he
sands down the metal in that area this
balances the impeller.

9. MANUFACTURING (STEP 4 : SHAFT PIPES MAKING)
• Next they make the pump shaft pipes .
• Tools work on both the ends of the
pipe simultaneously to refine the
inner diameter, then they carve
threads into them.

10. MANUFACTURING (STEP 5 : MAKING ROTOR AND STATOR)
• Rotor of induction motor is made by operations such as rotor pressing ,
brazing, turning , CNC turning, grinding and burnishing.
• After this they insert copper coils I into the Stator.
• A coolant is circulated in the stator windings for cooling of heat generated.
• Separate impellers is provided for circulating the coolant ( water or oil).

11. MANUFACTURING (STEP 6 : MOTOR ASSEMBLY)
• Before assembling the induction motor they take a inspection of rotor and
stator for checking of electrical connections or any problem.
• Winding:- when the inspection is done they start winding all the electric
cables , wires etc. Into the motor.

12. MANUFACTURING ( STEP 7 : PUMP ASSEMBLY)
• The pump is assembled manually.
• Workers step by step assembles the various parts such
as induction motor, impellers , diffusers , diffuser bowls
and shaft into the casing.
• They use bearings, springs and bolts and screws for
attaching the different parts into one an other.
• The assembled submersible pump is shown in right
side figure.

13. MANUFACTURING (STEP 8 : TESTING THE PUMP)
• Quality control department tests various pump parameters such Horse Power , operating
voltage and current, efficiency, dimensions and working speed etc.
• After this they take a actual test of pump.
• They submerges the Pump into the water and record their readings.

14. MANUFACTURING (STEP 9 : PAINTING AND PACKAGING)
• A blue color paint that is sprayed on the
pump to protect the pump from corrosion.
• Finally, the pump is packed and labelled.

15. RESOURCES USED :
• https://youtu.be/L0Q6cboXyLY
• https://youtu.be/jyg5qDkwZ4w
• https://youtu.be/WFwhMm1xDrI