The Vibra-Bucket
assists the otherwise tedious dry-screening
by hand methods of fine mesh soils/sands; it shakes your sieves/screens so
you don’t have to! It has a 30W 115V industrial vibrator inside a 5 gal Heavy Duty steel pail with a further reinforcing bottom board. A
special flat rimmed (short) 3.5 gal plastic bucket fits above the motor to hold the sieve/screen
and catch the soil/sand. Sections of rubber tape inside the steel pail rim
provide a snug fit with air gaps, to avoid a "stuck bucket."
When tested with 1/2 gal 3/1 mix of -12M/+12M dry river sand it delivers 97% and 99% in 1 and 2 minutes at full vibration. The speed controller allows turning down the force to MEDIUM range where it will screen twice as fast as the test above. In this way, the sand stays closer to the screen which allows more particles to find the holes. Full force is needed when too much soil is placed in a screen, especially at first, to help stir the load. The sound is dampened when soil/sand/gravel is added.
The vibration motor needs 115V AC. Otherwise, a small
inverter will provide power to work with a small 12V DC battery in the field.Inverters are sold separately.
Besides gold mining and prospecting, these can be used in cleaning rocks & gravel from lawns and used in meal worm farming to separate worms from the media where they live.