Open Source Soil Mixer 2016: Difference between revisions
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=Intro= | |||
To produce stabilized CEBs with our open source brick press, and to begin economically-significant block production - a mixer is needed for uniform mixing of soil and cement (lime or portland) in about a 5% proportion by weight. | |||
Commercial mixers are $100k, such as this one: | |||
[[File:aectmixer.jpg]] | |||
=Build= | =Build= | ||
*Build was started during the CEB Press/Power Cube workshop with most of parts cut out by Shayna and Eric? | *Build was started during the CEB Press/Power Cube workshop with most of parts cut out by Shayna and Eric? | ||
Revision as of 19:41, 15 October 2016
Intro
To produce stabilized CEBs with our open source brick press, and to begin economically-significant block production - a mixer is needed for uniform mixing of soil and cement (lime or portland) in about a 5% proportion by weight.
Commercial mixers are $100k, such as this one:
Build
- Build was started during the CEB Press/Power Cube workshop with most of parts cut out by Shayna and Eric?
- Finishing with bending steel over a round edge. It turns out that welding on slats perpendicular to the direction of bending allowed the 1/8" steel to be bent into a perfectly round shape using a lever arm and using bolts to do the pulling
- Closing lid was added at end
- Different motors can be interchanged - coupled via a double-chain coupler with modular motors carrying their own sprocket half
- tines are bolt-on, and work up to 10 cu in motors, but bolts got loose on the 45 cu in motor
- See 70 steps of build procedure here:
Dry Run
- Uses fast rotor, 650 RPM, 5 cu in hydraulic motor driven with 14 GPM hydraulics
- Not enough torque once 5 buckets of soil are used
- Switched to 10 cu in and finally to 45 cu in, the latter being 15,000 in lb of torque
Soil Mixing Initial Tests
- Success. Need to tighten down bolt-on auger, see stall in second video.