Measures of Dispersion and Variability: Range, QD, AD and SD
Small feederscreeners
1. ®
Small Feeder Screeners
Sales call preparation
2. ®
Small Feeder Screeners
• Material is introduced into the
back of the tray and the
vibratory action causes the
material to move forward and
be:
Scalped - (remove overs)
Screened (sizing)
Dedusted (remove fines)
3. ®
APPLICATIONS
• Salt
• Sugar
• Sand
• Coffee Beans
• Plastic pellets
• Metal Chips
• Candy
4. ®
INSTALLATION LOCATIONS
• After a metering device
• After a bucket elevator
• Under a chute
• Before a conveyor
• Before filling equipment
5. ®
INSTALLATION LOCATIONS
• Before shredders to protect
the equipment
• After shredders to separate the
different material sizes.
• Before and after grinders for
the same reasons as the
shredders
6. ®
Typical Installations
Scalping over sized salt
Removing broken piece
of candies and fines
7. ®
Small Feeder Screener Customers
• Basic American Foods • Custom Coatings
• Hershey • Chatham Village
• Cargill Salt • Thayer Scale
• GAF • 3m
• Kraft Foods • Automation Design
• Hillshire Foods • Bloomer Chocolate
8. ®
Small Feeder Screeners
FEATURES BENEFITS
• AC Drives • No Rectifier Required
Low power consumption
• 15 more models available • More sizes to fit
application
• 3600 cycle operation • More capacity with fine
materials
• Low profile • Fits into compact
locations
9. ®
Small Feeder Screeners
FEATURES BENEFITS
• Electromagnetic Drives • No normal maintenance
(no belts and bearings)
• Small size • Less expensive than
Circular Screens &
Mechanical
• Can be ganged together
• Transfer and screen in
same application
10. ®
Small Feeder Screeners
FEATURES BENEFITS
• .075” amplitude at 60Hz • Excellent for screening
(HS Screeners) fine materials
• Greatest capacity of all
Small Feeders (both
• 3/16” amplitude at 30Hz
Eriez and competitors)
(HD Screeners)
• Best for very light
products
12. ®
SYNTRON
• Cannot screen as efficiently
• DC units cannot screen as
slowly resulting in less
screen contact by the
product
• Fewer models available to
handle the volume range
resulting in exact sizing and
less efficient screening
13. ®
SYNTRON
• Uses “B” Feeders -
designs F-152 and F-
212
• Equivalent to Eriez
56C and 66C design
• Eriez open over hand
design makes it more
user friendly
• Shorter over all length
14. ®
SYNTRON
• Does not have HD designs
• They try to substitute with a
more expensive mechanical
design.
• Mechanical design provide less
contact with the screen area
because of greater
displacement thus less efficient
screening