Soil Mixer - Overall Machine - Requirements

1. Mix and pulverize a goal of 1/3 cubic yards of soil, can handle some

portland cement content. a)pulverize to less than 1/8" soil chunk size.

1. needs to be able to dump into the 6' high CEB press hopper
2. the same unit is used to scoop from a dirt pile and mix, avoiding th

need to transfer anything.

1. The unit can also be used to produce the dirt pile, including from

hard dirt.

1. allows for inspection of mix
2. openable latch for pouring slurry?
3. quick swapping of hydraulic motors
4. it can handle rocks without catastrophe. The soil is straight from the

ground so there will be rocks fairly often. The easier it is to recover from this, the better.

1. attaches to the lifetrac through the quick attach plate interface,

which is industry standard.

1. designed for manufacture in our context; should be mostly from flat

steel and stock, no unusual or hard to obtain parts.

1. assume the existence of the CEB press in it's current state, and no

other variants, to use with it.

1. can mix both slurry and dry dirt. Stucco is separate, it does not

need to handle stucco.

1. shaft and whatever else must be easily removable so the bucket can be

re-used in a different role, notably a front end loader.

1. can be cleaned with water easily (i.e. with a hose etc.)
2. be able to measure volume maybe, to aid good preportioning. May be

unneeded.

1. same motor and interface as the prior pulverizer, so the part is

compatible with other tools.

1. rotor is reversible ( to aid the resolution of jams)
2. can replace the current pulverizer
3. clamshell mechanism (this was later jetissoned)
4. a latch for pouring slurry in a controlled way
5. the auger/rotor can be changed out, so it can be used for heavy cement
6. < 1500 parts and materials cost.
7. hydraulic driven
8. it can be up to 72" wide, which matches the hopper on the ceb press
9. the bearings are kept clean