Water filtration pump

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Revision as of 21:11, 6 February 2012 by Ikamei@andrew.cmu.edu (Talk | contribs)
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Contents

Primary Stakeholders and Product Needs

The primary stakeholders and their needs for the product are listed below. The stakeholders are parties that have an vested interest in the product. Consumers, retailers, manufacturers, and shipping/transport were identified as the most important stakeholders in the product.

Consumers:
The consumers are the group of people that purchase and use the product, and therefore have a major interest in the product. As the product is a portable water filter, major target consumer groups are backpackers, and people without easy access to clean water.

  • One of the most important functions of the water pump is that it pumps water. Without the ability to pump water, it can't push water through the filter, and thus can't filter water.
  • Another important aspect is the drinkability of the water. The pump will need to eliminate dangerous pathogens and bacteria, or else the user of the product could get potentially life-threatening diseases. In addition, since the pump is meant to be used as a backpacking filter, medical first aid may not be readily available.
  • The portability of the water pump is important as well, as it is meant to be a backpacking water pump. It needs to be carried, and so having a light product that can fit into a backpack is essential to the consumer.
  • In order for the product to compete with similar products on the market, it must pump water quickly and efficiently. The pump can't be too hard to operate.
  • The pump must also be cheap in order to be competitive with similar products.
  • As the pump is meant to be taken backpacking, the pump must be durable. It should be able to sustain loads that could result from being thrown into a backpack. As having a source of water is vital, the pump breaking in the middle of a backpacking trip could not only be inconvenient but dangerous to the consumer.
  • Product lifetime and filter lifetime are both important factors in a consumers decision as well. The longer lasting the product and the filter, the less hassle and cost it is for the consumer.
  • Using sustainable materials for the water filter is important as well. The target consumers generally spend a lot of time in nature and appreciate the importance of using sustainable materials and processes in creating the product
  • Since the water filter could be contaminated and needs to be cleaned regularly, the ease of cleaning and sterilization of the water pump is very important.
  • The product must also be safe, as there are moving parts, and could be a potential cause of injury.
  • Finally, the product should work with existing products such as Nalgene and CamelBaks, as many backpackers already have these products, and would prefer to choose a product that works with equipment that they already own.

Retailers:
The retailers are another group that has a major interest in the product. The retailers sell the product to the customer, in exchange for profit. The target retailers include outdoor equipment and sports stores such as REI and Dicks, as well as internet vendors such as Amazon.

  • The price of the product is very important to retailers, as it affects their profit margin, and the quantity of product they can sell.
  • The sustainability is important to many retailers, especially for retailers that have sustainability as part of their brand image.
  • Attractive
  • Profitable
  • Safe

Manufacturers:

  • Cheap
  • Simple design (few parts)
  • Compatible with large scale manufacturing processes (Injection molding)
  • Easy to assemble
  • Standardized/interchangeable parts
  • Safe

Shipping/Transport:

  • Sturdy
  • Light weight
  • Compact
  • Stackable

Product Function and Evaluation

Usage
Find the cleanest possible source of water. The intake hose is unwound, and then the intake hose is inserted into the water source. Attach the pump to the water container. Pump water at a steady rate, until container is full. Pull the intake hose out of the water, and pump to clear pump of any additional water.

Bag
Bag
Bag Contents
Bag Contents
Pump Apparatus
Pump Apparatus


Mechanical Function
The product contains a lever that is attached to a pump with two check valves. On the intake stroke, the intake check valve allows water through the water source into the piston. On the compression stroke, the intake check valve is closed and the bottom check valve allows water to be forced through the filter chamber. The filtered water is then sent out of the pump.

Exploded View
Exploded View
Intake Hose
Intake Hose
Piston Assembly
Piston Assembly

List of Parts

The following details the list of parts of a MSR MiniWorks EX Microfilter.

Part Number Name Quantity Mass (g) Subassembly Function Material Manufacturing Process Image
101 Divert Cap 1 0.5 Hose Barb Plastic Pending Image
102 Washer 1 <1 Hose Barb Steel Pending Image
103 Spring 1 2 Hose Barb Steel Pending Image
104 Hose Barb O-Ring 1 0.5 Hose Barb Rubber Pending Image
105 Hose Barb 1 3 Hose Barb Plastic Pending Image
201 Hose 1 44 Inlet Hose Rubber Pending Image
202 Buoy 1 <1 Inlet Hose Foam Pending Image
203 Debris Cage 1 11 Inlet Hose Steel Pending Image
204 Intake 1 1 Inlet Hose Plastic Pending Image
205 Foam Filter 1 <1 Inlet Hose Foam Pending Image
301 Piston Cap 1 56 Piston Plastic Pending Image
302 Piston 1 9 Piston Plastic Pending Image
303 Piston O-Ring 1 2 Piston Rubber Pending Image
304 Piston Pivot Sleeve 1 1 Piston Plastic Pending Image
305 Piston Pivot Pin 1 <1 Piston Plastic Pending Image
306 Handle Pivot Sleeve 1 2 Piston Plastic Pending Image
307 Handle Pivot Pin 1 1 Piston Plastic Pending Image
308 Handle 1 49 Piston Plastic Pending Image
309 Piston Umbrella Valve 1 <1 Piston Rubber Pending Image
401 Top Cap 1 18 Filter Plastic Pending Image
402 Outlet Cap 1 10 Filter Plastic Pending Image
403 Ceramic Filter 1 42 Filter Ceramic Pending Image
404 Carbon Filter 1 34 Filter Carbon Pending Image
405 Filter O-Ring 1 4 Filter Rubber Pending Image
501 Filter Body 1 97 Body Plastic Pending Image
502 Clean Cap 1 18 Body Plastic Pending Image
503 Filter Gauge 1 5 Body Plastic Pending Image

References

Cascade Designs, Inc. MSR MiniWorks EX Water Filter. 24 Jan. 2012. Instruction Manual. Seattle, WA.

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