These powerpoint deals with the different pumps used in the dairy industry. the different pumps which are discussed are a centrifugal pump, rotary pump, reciprocating pump, progressing cavity pump, peristaltic pump, liquid ring pump and jet pump.

1. UNNI SREENIVAS
2015-027-044
PUMPS USED IN DAIRY INDUSTRY

2. PUMPS USED
Centrifugal
Pump
Gear Pump
Lobe Pump
Reciprocati
ng Pump
Progressing
Cavity
Pump
Peristaltic
Pump

3. CENTRIFUGAL PUMP
The pump raises the
milk from a lower
level to a higher level
by centrifugal force
Its popularity is due to
relative simplicity,
mechanical efficiency as
high as 90%

4. # Its ability to handle
fluids containing solids
in suspension
# Simple and Ease of
disassembling which
facilitates cleaning,
washing and sterilizing

5. Rotary
Pump
Gear Pump
External
Gear Pump
Internal
Gear Pump
Lobe Pump
ROTARY PUMP
Rotary Pumps are Positive Displacement Units

6. GEAR PUMP
They pump a
constant amount
of fluid for each
revolution.
Gear pumps are
also widely used
in chemical
installations to
pump high
viscosity fluids
Provides a
continuous
smooth flow of
material
Do not whip the
material when
pumped
Can be easily
dismantled for
cleaning
Suitable for
viscous
substances such
as ice cream mix

7. GEAR PUMP
Uses two external spur gear
EXTERNAL
GEAR PUMPS
Uses one external and one internal spur
gear
INTERNAL
GEAR PUMPS
Gear Pumps are positive
displacement (OR) fixed
displacement)

8. LOBE PUMP
The wheels may
have two or three
lobes or even
more
But the action
remains the same
The only
drawback is that
it that its
discharge is not
so constant

9. As the lobes rotate, the
liquid is trapped in the
pockets formed between
lobes and casing
The lobes build sufficient
pressure to force the liquid
into the delivery pipe
Design is such that they form
a fluid tight joint at the point
of contact

10. RECIPROCATING PUMP
A reciprocating pump is a class of positive-displacement
pumps
Used where a relatively
small quantity of
liquid is to be handled
and where delivery
pressure is quite large

11. PROGRESSING CAVITY PUMP
Consist of a single helix metal
rotor which turns eccentrically
within a double helix resilient
stator of twice the pitch length
The rotor is of constant circular
cross section and makes a
interference fit inside the
stator creating a continuously
forming cavity as it rotates
The cavity progresses towards
the discharge port advancing in
front of a continuously forming
seal line and carrying the
pumped product with it

12. The stator is made of
neoprene
They have a gentle
pumping action
with a uniform
flow rate
It makes it suitable
for handling and
transfer of delicate
and shear sensitive
products such as
cream

14. PERISTALTIC PUMP
They can be easily
cleaned
Three rollers
squeeze the tube
against the walls of
the pump
This causes the
contents of the
tube to the pressed
forward in the
pumping direction
Behind each roller,
a vacuum is created
which sucks up the
product

15. Fluid containing solid particles can be pumped
without any product damage
Because there is rolling motion, cream can be
pumped without churning
The tubes can be easily removed

16. LIQUID RING PUMP

17. Liquid-ring pumps for
the dairy industry are
used where the
product contains large
quantities of air or gas,
and where centrifugal
pumps therefore
cannot be used.
They are self-
priming if the
casings are at
least half
filled with
liquid.
They can then
handle liquids
with a high gas
or air content.

18. JET PUMP
Used to lift water
to the boiler
Steam under a
high pressure is
introduced
through a nozzle
The pressure
energy of steam is
converted into
kinetic energy as it
passes through the
nozzle
The pressure in the
convergent portion
of the pipe is
considerably
reduced and water
is sucked into the
pipe
The sucked water
after coming in
contact with the
jet, is carried into
the delivery pipe.