peristalitic pump

1. By- Aishwarya Swain
120BM0019
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INDEX
1. INTRODUCTION
2. DESCRIPTION OF THE PUMP
3. WORKING OF PUMP
4. TYPES OF PERISTALTIC PUMP MOTORS
5. TYPES OF PERISTALTIC PUMP
6. TUBE SELECTION FACTORS
7. TUBING MATERIALS
8. APPLICATIONS
9. USE IN HEART-LUNG MACHINE
10.ADVANTAGES AND DISADVANTAGES
11.FURTHER STUDIES
12.CONCLUSION

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• A peristaltic pump is a positive displacement pump, used for a variety of
fluids.
• Fluids include a wide range of viscous materials that cannot be pumped by
common pumps.
• A form of the peristaltic pump was described in The Mechanics
Magazine in1845
• The peristaltic pump was first patented in the United States by Rufus
Porter and J.D. Bradley in 1855 .
• Later in 1881 it is used for blood transfusion and in 1932 it is used for
CBP(cardiopulmonary bypass).
INTRODUCTION

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• The peristaltic pump has a hollow curved casing having
semicircular or 360-degree rotation. The casing is mainly
steel.
• Inside the casing there is a tube, placed along the curved
surface. Silicone tube is the most used type.
• At the center there is the rotating spindle on which rollers
are attached. Rollers may be fixed radially outward or in a
concentric manner. Roller edges should be very smooth to
prevent wear or tear on the tube surface.
• Inlet and outlet valves are also provided sometimes.
DESCRIPTION OF THE PUMP
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• The working mechanism of the peristaltic pump is similar to
that of the digestive system of the human body.
• The peristalsis mechanism causes the compression and the
relaxation of the tube (or digestive tract) for the movement of
the fluid particle.
• Most peristaltic pumps work through rotary motion, though
linear peristaltic pumps have also been made.
• The rotor has a number of "wipers" or "rollers" attached to its
external circumference, which compress the flexible tube as
they rotate by.
• The part of the tube under compression is closed, forcing the
fluid to move through the tube.
• The rollers are rotated either directly by a motor or by a
gearbox.
WORKING PRINCIPLE OF THE PUMP
ROTOR
ROLLER
TUBE
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Common motor types for peristaltic pumps
include
• brushed direct current (DC),
• brushless direct current (BLDC),
• alternating current (AC) or stepper motors.
 If the hose pump is driven without a gearbox,
changing the motor speed can control the flow.
 Typical motor speeds for peristaltic pumps
range between 0-400 revolutions per minute.
 Usually, DC and BLDC motors are used
together with a gearbox to set speed
depending on the flow need. Stepper motor
speeds can be regulated by using an external
controller board.
TYPES OF PERISTALTIC PUMP MOTOR
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7. HOSE PUMP
• Reinforced tubes called ‘hoses’ are used and hence
the name ‘hose pump
• Hose pumps work under high pressure, up to 10 bars.
• The casing and rollers are filled with lubricant to
prevent abrasion and to dissipate heat.
TUBE PUMP
• Low-pressure type
• The casing and rollers are dry and use non-reinforced
tube.
• work below 5bars.
360-DEGREE ECCENTRIC DESIGN
• The casing has a full 360-degree inner cavity
• There is only one roller fitted on an eccentrically
arranged shaft, compressing a low friction tube.
TYPES OF PERISTALTIC PUMP
360˚ ECCENTRIC PUMP
TUBE PUMP
HOSE PUMP HOSE
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Peristaltic pump is increasing in popularity because of their contamination-
free fluid transfer. Each application has its own type of tube material. So
when designing, tube material selection is an important factor.
The factors are
1) Chemical compatibility
2) Pressure
3) Temperature
4) Dimension
5) Tolerance
6) Life expectancy
7) Gas permeability
8) Transparency
9) Regulatory approval
10) Cost
TUBE SELECTION FACTORS
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• MARPRENE- Marprene is a thermoplastic
material. It has wide chemical compatibility,
resistant to oxidizing agents like ozone
compounds. Opaque to visible and ultraviolet
rays.
• BIOPRENE-It is similar to marprene and has a
longer life span.
• SILICONE-Is the widely used laboratory tubing.
Platinum-curing is provided to prevent
contamination of the fluid.
• NEOPRENE-Useful for abrasive slurries
TUBING MATERIALS
Marprene
tube
Bioprene
tube
Silicone tube Neoprene tube
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10. PERISTALTIC PUMP IN DIALYSIS MACHINE
The peristaltic pump is used in:
• Dialysis machine
• Open-heart by pass machines
• Sewage sludge
• Analytical chemistry experiments
• Food manufacturing industries
• Pharmaceutical production
• Construction-pumping cement
• Pulp and paper industries
• Aquariums ; etc
APPLICATIONS OF PERISTALTIC PUMP
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11. USE OF PERISTALTIC PUMP IN HEART LUNG MACHINE
• The peristaltic pump is used as the blood pump of the
heart and lung machine because of its advantages of
simple operation, hygiene, no cross-contamination,
stable operation, accurate and safe liquid delivery.
• Artificial heart and lung machines usually have 4 to
5 peristaltic pumps, each pump has a clear function,
among which the main pump is used to replace the
ventricular stroke function.
• Other peristaltic pumps are used for blood return in
the operation field, ventricular decompression and
exhaust, and perfusion of cardiac arrest fluid.
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ADVANTAGES
• Noncontamination
• Inexpensive to manufacture
• Low maintenance
• Easy to sterilize
• Cost-effective operation
DISADVANTAGES
• Operators need good knowledge.
• Selection of tubes for the required
purposes can be sometimes difficult.
• Tube life is limited.
ADVANTAGES & DISADVANTAGES
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13. PERISTALTIC PUMP
• The peristaltic pump can be further
developed, the filling measurement range
can be increased infinitely large from 0, and
the equipment can adapt to all tube . The
filling precision and stability performance can
be increased.
• Study of the digestion of different molecules
can be done .
• Study of the effect of peristaltic movement in
the intestine can be done
FURTHER STUDIES
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14. • Peristaltic pumps have become a critical
and reliable part of processes ranging
from chemical transfer to pharmaceutical
processing to wastewater treatment.
• Their versatility and ease of use has
helped them meet a multitude of fluid
handling challenge
CONCLUSION
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15. • www.gardnerdenver.com
• www.crpump.com
• www.peristalticpump.info
• www.wikipedia.com
• www.vectorpumps.com
• www.lplc.com
• http://www.incor.usp.br/sites/bio
engenharia/en-us/cec.html
• www.coleparmer.com/tech-
article/peristaltic-pumps
REFERENCES
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16. THANK YOU
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