topics:pump_fabrication
Table of Contents
Pump Fabrication and Assembly
Overview
Download the slide deck giving overview of pump fabrication and testing
Creating the Impeller Model
- Solidworks practice: Screencast on making the pump lid
- Cookbook for creating an impeller model
Fabrication and Assembly of the Pump Body
Download the slide deck with instructions on fabricating the pump
Main fabrication steps
- Use milling machine to create the cavity for the impeller
- Using milling machine and hand drills to fabricate the lid
- Drill pilot holes in the pump body
- Drill clearance holes in the pump lid
- IMPORTANT: Understand the difference between clearance and pilot holes
- Tap pipe threads into the side of the pump body and the lid
- Drill out the ID of the impeller –BE CAREFUL to use a bit slightly smaller than the motor shaft diameter
Main assembly steps
- Press the motor bushing into the pump body – Test that motor fits
- Insert barbed fittings with teflon tape on the threads
- Insert motor into the pump body and secure it with zip ties – Test that motor spins freely
- Add a drop of oil to the inner (small) O-ring on the motor bushing
- Press the impeller on to the motor shaft (after the motor is secured with zip ties)
- Install the lid
- IMPORTANT: Understand how O-ring seals the lid.
- Test that the motor spins the impeller and that the impeller does not slip when applying a slight resistance with your thumb
- Insert the large O-ring
- Use self-tapping screws to secure the pump lid – Test again that the impeller can spin freely
topics/pump_fabrication.txt · Last modified: 2019/11/26 08:09 by gerry