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Portable Water Purifier for Get Away Campers
1. Portable Water Purification Unit
for the Get-away Campers
Defense Presentation
Presented by:
Vaibhav Bakhshi
08613005
M.Des. (Industrial Design)
Batch of 2010
IDC, IIT Bombay
under the Guidance of
Prof. Kishor Munshi
&
Prof. Purba Joshi
30th April 2010
2. The Process
Meeting
Listing and analysing
Identification
Collecting
Finding alternate situations
Getting feedback
Finding available solutions
Studying
Defining Parameters
Defining Project Brief
Ideating
Evaluating and short listing
Detailing shortlisted concepts
Evaluating again
Detailing the final concept
Preparing Drawings and Soft Prototype
Mock-up Model
...
3. Problems Identified for Get-Away Campers
Limitations of carrying weight
Sanitation and hygiene in daily activities
Privacy for females while in a large group
Unavailability of safe drinking water
Unavailability of dry Fuel-wood
Unfortunate illness
Accidental Injuries
Safety in outdoors from animals/ insects etc.
Protection from weather
4. Problems Identified for Get-Away Campers
Limitations of carrying weight
Sanitation and hygiene in daily activities
Privacy for females while in a large group
Unavailability of safe drinking water
Unavailability of dry Fuel-wood
Unfortunate illness
Accidental Injuries
Safety in outdoors from animals/ insects etc.
Protection from weather
5. Visit to a Camp
Trekking Camp to Kalsubai and Ratangarh, Maharashtra
• Name of Group Zunjar Hikers
• Group Strength 14 people
• Camp Duration 2 Nights & 3 days
• Place of Stay A Godown shed, Ratanwadi, District Ahmednagar
6. The Get Away Camps
Hiking/ Trekking/ Cycling
Resting
Tiring
Drinking Water (against dehydration)
Experiences
Danger
Exploration
Fun
Fetching Fuel & Water
Cooking
Food
Activities in Get-Away Camping Drinking Water (to comfort dry throat)
Washing dishes
Shelter Sleeping
Night
Bonfire Recreation
Sanitation Washing
7. The Get Away Camps
Hiking/ Trekking/ Cycling
Resting
Tiring
Drinking Water (against dehydration)
Experiences
Danger
Exploration
Fun
Fetching Fuel & Water
Cooking
Food
Activities in Get-Away Camping Drinking Water (to comfort dry throat)
Washing dishes
Shelter Sleeping
Night
Bonfire Recreation
Sanitation Washing
8. Micro Purifiers Ultra Violet Purifiers
High Quality Chemical Purifiers Solar Disinfection Purifiers
Synchronic Analysis - of Portable Water Purifiers
Micro Purifiers Pressure Pump activated Ultra-Filtration Membrane Purifiers
9. Case Study - of Portable Water Purifiers
Life Saver Bottle Life Straw Purifier Sulis P.P.D.
10. The Technology
Water Monovalent Multivalent Viruses Bacteria Suspended
Ions Ions Solids
Micro-filtration
Ultra Filtration
Nano Filtration
Reverse Osmosis
“Drinking water or potable water is water of
sufficiently high quality that can be consumed
or used without risk of immediate or long
term harm.”
11. The Technology
Ultra Filtration Polysulphone Membrane Cartridge • Developed by Desalination Division at Bhabha
Atomic Research Center, Trombay, Mumbai
• Very effective as it removes bacteria and
viruses to the extent of > 99.99%
• Removes complete turbidity and produces
crystal clear water
• Does not need electricity or addition of any
chemical
• Has provisions to remove organic or colouring
material from the feed-water
• Highly strong (both chemically and physically)
membranes with a high life (3-5 years).
• Almost maintenance free except occasional
cleaning of membrane to remove deposited
solids.
• Device works between the hydrostatic heads 5
psi and 35 psi
• It can produce about 2000 liters of pure water
per day per m2 membrane area at about 5 psig
head.
12. The Problem Statement The Project Brief
To design a strong portable water purifier, to be used To design a water purifier which
individually by get-away campers, which is easy to • is to be used by a single person
carry and operate, and gives a surety of pure and safe • is portable
water from any source.
• uses the Polysulphone Ultra-filtration
membrane technology
• has a capacity of carrying a total of 1 Ltr water
• can be manufactured economically
• is sturdy enough to withstand harsh usage
conditions and not break on falling from small
heights even when full of water
• must not have a dry weight more than 500gms
• should facilitate easy carrying
• must involve less efforts in operation
• has a method of operation which is simple and
easy to learn
Assumptions
• Operating Temperature is above 00C
• Water source is accessible to the user
• Water is not taken from a saline source
• Water is known to be free from dissolved
Hazardous waste
13. 01.Pressure from a Walking Stick Piston
Handle for holding the
stick
Compression Spring to
facilitate easy multiple
operations
Place holder for the
carrying strap
Non Return Valve
14. 02.Pressure by using Collapsible Bellows
Lid to be used for
consumption of water
Chamber to house the
candle which carries
purified water
Collapsible Bellows
Wider mouth of the
opening for filling water
15. 03.Pressure by Lever Operated Piston
Piston rod provided
with teeth
Cap over opening for
impure water
Hand operated lever for
the piston
Container housing the
candle and the impure
water
Cap over opening for
pure water
16. 04.Pressure by Lever Operated Piston
Cap over the opening
for filling impure water
Cylindrical cavity in the
cap with Non Return
Valve at the base
Cylindrical extension in
the lid which acts like a
piston
Container to store
impure water
Candle which also
stores pure water
Cap over opening for
drinking the pure water
17. 05.Pressure by Screw driven Piston
Cap over the opening
for filling impure water
Outer Cylinder with
internal threading
Smaller cylindrical
bottle with external
threading which fits
into the bigger cylinder
Candle which stores
pure water
Cap over the opening
for filling impure water
21. The experiments & data collection - to verify the principle
Formula used for calculations :
T = [FR. dp.(μ.π.dp + L)] / [2.(π.dp - μ.L)]
Here,
T = Torque applied on the screw;
FR = Resultant force generated in the direction of the movement of the screw;
dp = Pitch diameter;
μ = Coefficient of Friction
L = Lead distance = distance moved by the screw in every complete rotation
23. Development of Form
“Two roads diverged in a wood, and I...
I took the one less traveled by,
And that has made all the difference.”
-Robert Frost
‘The Road Not Taken’ [1915]
24. Final Proposal - Orthographic Drawings
Drinking End Plan
Section Front Elevation Filling End Plan
25. Final Proposal - Material Specifications
Injection Moulded Poly Propylene Slide Assembly for the opening
Injection Blow-moulded Poly Propylene Container with insert- moulded
External Nylon Threadings
Silicon ‘O’ Rings for leak-proofing the threaded assembly
Standard One Way Valve for water
Injection Blow Moulded Poly Phenyl Sulphone [Radel R] Shell with 2mm
wall thickness
Injection Moulded Nylon-6 [Poly Amide 6] Cylinder with Internal Threading
[Pitch 3mm]
Ultra High Molecular Weight Poly Propylene Candle with Polysulphone
Membrane coating on the exterior face [Capacity 500ml]
Low Density Poly Ethylene Straw
Poly Propylene Cap
26. Final Proposal - Instructions for Use - Holding
Holding the unit for drinking
Holding the unit for purifying operation
27. Final Proposal - Instructions for Use - Opening
Opening the unit for filling water
28. Final Proposal - Instructions for Use - Filling
Filling water from any surface-water source
29. Final Proposal - Instructions for Use - Purification Operation
Turning the screw through lever to enable purification
30. Final Proposal - Instructions for Use - Drinking
Opening the unit for drinking
