Water Pump Group 2

howe / hild @ uarts

hand washing station

Original project brief

“We want a hand washing sink that is operated by foot�

our mission statement/direction

Accessible materials (pick one universal source) Replicable Inexpensive (set a price limit) Provide instruction sets for how it’s made Educational (learn by doing/using, diagrams) Freestanding / not requiring existing structure Preferably self contained system

refined definitions

Portable We want the unit to be mobile, which will allow for more flexibility in use, eg. events, demonstrations, farmers market.

refined definitions

Inexpensive The unit should cost less than $50 when made by the user. The parts are all easily available at big box hardware stores.

refined definitions

Easy Maintenance Should something go wrong, we want it to be easily diagnosed and fixed by the user. No outside help or speciality knowledge required.

refined definitions

Simple Set Up With detailed instructions, diagrams and explanations the user should be able to fabricate their own hand pump system. None of the connections or components are overly complicated.

refined definitions

Hygienic A pressurized pump means that water is on demand, no hands required. Simply press the foot pedal for a controlled stream over the basin.

refined definitions

Replicable Low cost and easy set up makes multiple units an option so more than one person can wash up at one time, in more than one location.

initial research

initial research hardware store

mechanism research pestaside pump

“5 minutes of continuous spray!� = no constant foot pumping

mechanism research pestaside pump

pump ran for over 8 minutes on one pumping easy pour spout

1. Pump the handel to charge

2. Forces air into container

mechanism research how it works

3. Water released in fine mist by pressing button

mechanism research installed with larger reservoir to make the mechanism more DIY

seemed flimsy and did not hold pressure well enough

initial model why use this product

reduces water use lightweight/portable CHEAP ($14.95) readily available strong (seamingly) durrable plactic

initial model sketches self­ —contained unit designed around the round up pump

initial model sketches self­ —contained unit designed around the round up pump

1st feedback / crit initial model

wont hold enough water loved the pressure style of pump breaks easily would like it larger

1st feedback / crit initial model

“We like the pressure, it would get dirt off your hands. But the RoundUp pump breaks easily” “It would be really great if you could make it larger”

exploration of larger pressure tanks food manufacturing sprayers, etc.

exploration of larger pressure tanks food manufacturing sprayers, etc.

NEW focus! farmers market

temporary (only a few hours a week) defined location and users

temporary means there might be a spare hose, and no need to have a reservoir

NEW mechanism hoses

hoses = pressure

2nd form iteration hose + single pipe

2nd form iteration hose + single pipe

2nd form iteration hose + single pipe

2nd form iteration first model in pipe

on site testing first model in pipe

the farmers market more specific location

refining the pipe model problems with stability

greensgrow only has 4" of topsoil single pole not very sturdy needed a different basin

designing around a sink? how to adapt our system to an existing utility sink

double pipe model abandonment the sink in favor of a more streamlined version

double pipe model version 2

double pipe model #3 constructing a fully functioning prototype for greensgrow

double pipe model #3 how this self contained model works

OUT

IN

double pipe model #3 parts 1/2" galvanized steel T­ —joint

3 1/2 x 1/2" galvanized steel pipe

1/2" galvanized steel nipple (2x)

1/2" galvanized steel T­ —joint (2x)

1/2" galvinized steel floor flange

1/2" galvanized steel elbow (2x)

2 1/2" galvanized steel nipple garden hose to 1/2" pipe connector 5 x 1/2" galvanized steel pipe

1/2" galvanized steel T­ —joint

1/2" stainless steel self closing valve

26 1/4 x 1/2" galvanized steel pipe

12 x 1/2" galvanized steel pipe 8 x 1/2" galvanized steel pipe

30 x 1/2" galvanized steel pipe

1/2" galvanized steel elbow

1/2" galvanized steel nipple

prepare your tools:

following manufacturers directions, fill two 1/2" nipples, and one 2 1/2" nipple. allow to set.

Make sure to tape all joints when assembling

one nipple has epoxy plug

possible options for the basin:

base for final model parts

parts used:

12" x 6" x 3/4" Plywood (4x)

12" x 24" x 3/4" Plywood (2x)

Large door hinge

1/4" Screws (5x)

1 1/2" x 1/4" bolts (8x)

Standard wood screws (21x)

Washers (16x)

5" metal chain

1/4" nuts (8x)

installation at Greensgrow for the farmers market

it works! the base should be sealed needs a better chain hose leaks a little people looked intrigued needs signage to explain soap / towels

further steps where else is this applicable?

community gardens other urban farms temporary events farmers markets home use / personal gardens

instruction book parts used: 3 1/2 x 1/2" galvanized steel pipe

1/2" galvanized steel T­ —joint (2x)

1/2" galvanized steel elbow (2x)

2 1/2" galvanized steel nipple epoxy plug here

parts used: 5 x 1/2" galvanized steel pipe

1/2" galvanized steel T­ —joint

26 1/4 x 1/2" galvanized steel pipe

12 x 1/2" galvanized steel pipe

1/2" galvanized steel elbow

1/2" galvanized steel nipple

our mission statement/direction repeated

Accessible materials (pick one universal source) Replicable Inexpensive (set a price limit) Provide instruction sets for how it’s made Educational (learn by doing/using, diagrams) Freestanding / not requiring existing structure Preferably self contained system

thank you.