h1. Prototype Doser Frame


h2. Abstract

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A full scale proto-type is being created.&nbsp; This model will allow us to run full flow/ full scale accuracy tests in the lab.&nbsp;Additionally, this model will be taken to the EP3 conference this spring.

h3. Proo-type Design


* Monica Hill
* Harrison
* Akta
* <!--  /* Font Definitions */  @font-face 	{font-family:"Cambria Math"; 	panose-1:2 4 5 3 5 4 6 3 2 4; 	mso-font-charset:1; 	mso-generic-font-family:roman; 	mso-font-format:other; 	mso-font-pitch:variable; 	mso-font-signature:0 0 0 0 0 0;} @font-face 	{font-family:Calibri; 	panose-1:2 15 5 2 2 2 4 3 2 4; 	mso-font-charset:0; 	mso-generic-font-family:swiss; 	mso-font-pitch:variable; 	mso-font-signature:-1610611985 1073750139 0 0 159 0;} @font-face 	{font-family:"Bookman Old Style"; 	panose-1:2 5 6 4 5 5 5 2 2 4; 	mso-font-charset:0; 	mso-generic-font-family:roman; 	mso-font-pitch:variable; 	mso-font-signature:647 0 0 0 159 0;}  /* Style Definitions */  p.MsoNormal, li.MsoNormal, div.MsoNormal 	{mso-style-unhide:no; 	mso-style-qformat:yes; 	mso-style-parent:""; 	margin-top:0in; 	margin-right:0in; 	margin-bottom:10.0pt; 	margin-left:0in; 	line-height:115%; 	mso-pagination:widow-orphan; 	font-size:11.0pt; 	font-family:"Bookman Old Style","serif"; 	mso-fareast-font-family:Calibri; 	mso-fareast-theme-font:minor-latin; 	mso-bidi-font-family:"Times New Roman"; 	mso-bidi-theme-font:minor-bidi;} p.MsoNoSpacing, li.MsoNoSpacing, div.MsoNoSpacing 	{mso-style-priority:1; 	mso-style-unhide:no; 	mso-style-qformat:yes; 	mso-style-parent:""; 	margin:0in; 	margin-bottom:.0001pt; 	mso-pagination:widow-orphan; 	font-size:11.0pt; 	font-family:"Bookman Old Style","serif"; 	mso-fareast-font-family:Calibri; 	mso-fareast-theme-font:minor-latin; 	mso-bidi-font-family:"Times New Roman"; 	mso-bidi-theme-font:minor-bidi;} .MsoChpDefault 	{mso-style-type:export-only; 	mso-default-props:yes; 	mso-ascii-font-family:"Bookman Old Style"; 	mso-fareast-font-family:Calibri; 	mso-fareast-theme-font:minor-latin; 	mso-hansi-font-family:"Bookman Old Style"; 	mso-bidi-font-family:"Times New Roman"; 	mso-bidi-theme-font:minor-bidi;} .MsoPapDefault 	{mso-style-type:export-only; 	margin-bottom:10.0pt; 	line-height:115%;} @page Section1 	{size:8.5in 11.0in; 	margin:1.0in 1.0in 1.0in 1.0in; 	mso-header-margin:.5in; 	mso-footer-margin:.5in; 	mso-paper-source:0;} div.Section1 	{page:Section1;} -->The proto-type is made up of two sections: the structural frame work and the moving lever-arm.&nbsp; All components will be fabricated using a modular aluminum framing system manufactured by a company called 80/20.&nbsp; Affectionately called "The Industrial Erector Set," this company offers a wide variety of components along with an Auto-cad plug-in of each of their components.&nbsp; With these tools, we have been able to design and evaluate multiple proto-types. The structural framework is designed with the same dimensions as the entrance tank except actual tank measures 1 meter x 1 meter and our framework is 1 meter by ½ meter.&nbsp;This was done only as a space saving measure.&nbsp; The height of our framework however is the same as the height of the entrance tank.&nbsp;Entrance tanks dimensions are based off the relationship between the design flow rate through the plant and the orifice.&nbsp;We also need to accommodate the length of the rapid-mix tube and approximately \**\* feet of free board.&nbsp;(If no one else is showing these calculations, I can put them here, or we can include them elsewhere). In addition, the frame work includes a table to hold a small stock tank and another table to hold the constant-flow device.&nbsp; Ideally, there should be 30 cm between the orifice and the low water lever of the stock tank.&nbsp; This dimension has been taken into account in our design. We have designed three different lever systems with the current-final lever presented here.&nbsp;There are a number of constraints in the design of this lever arm.&nbsp; First, we need to facilitate a way to attach the floats and counter-weight.&nbsp; Secondly, we must have a way to adjust the distance the orifice travels down the arm.&nbsp; It was also requested that the operators be given a means to manually "shut off" the flow.&nbsp;&nbsp; There was another request to have a second slide to facilitate attaching a second dosing pH control system. As shown on this system, all of the above listed constraints can be met.&nbsp; We are using a slide mechanism that has a manual "brake" that allows the slide to be clamped in any position.&nbsp; A have slides on both sides of the lever to allow both alum and lime dosing.&nbsp; Both slides can be moved to the center line to allow the operator to secure flow if needed.&nbsp;The floats and weights will be attached via the brackets at the endpoints.&nbsp;  A material list has been created which lists each of these components, part number, quantity and associated fasteners.&nbsp; This material list needs to be updated to reflect our most recent design once this design has been approved by all members of the team.&nbsp; At that point, the design will be sent out for pricing and the components will be ordered.&nbsp; Upon arrival of the parts, we will be able to build our full scale model, attach the hydraulic components and begin testing.

h2. BLah - ignore the stuff written below, it's part of the template

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h2. Bibliography

_List references for your project that your team has found in literature searches._
* http://www.8020.net/Default.asp&nbsp; Includes parts catalog, pricing list and Auto-cad Plug in
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h2. Deliverables

_What do you plan on "handing in" by the end of the semester?  Designs, programs, separate reports for publication, etc._
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