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Joe Marinelli of
Solids Handling Technologies
Class Duration: 69 minutes
Subscription: 7 days
$39 $19 (US)
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Lecture 3, of the Solids Flow Series, we describe and discuss the
effectiveness of both volumetric and gravimetric feeding devices. The topics
covered in this lecture include volumetric feeders which discharge a volume
of material per unit time.
The key to reliable feeder
design is to make sure that the feeder is capable of discharging your
product uniformly over the entire outlet cross-sectional area. The type
volumetric feeders detailed are screws, belts, and rotary valves.
Additionally, louvered feeders and the circle feeder are discussed.
The information regarding
gravimetric feeders concentrates on systems required to provide weighments
of product passing through the devices. Weigh belt feeders are discussed
along with what is considered the state of the art today, loss-in-weight
feeders. Gain-in-weight feeders which can be as simple as a container on a
scale are described along with their limitations.
Lecture includes downloadable class notes and
a self administered quiz with answer sheet. The seven-day subscription
allows you to watch and review this video class as many times as you need.
Flow Problems - Their effects and flow patterns
Flow problems in your handling system
can have serious consequences, where reliable solids flow is
essential, especially with regard to operational costs and.. (click
Lecture 2: Design principles for reliable flow - wall friction, flow and bin design
Wall friction tests yielding the angle
of wall friction, leads to determination of hopper angles required to ensure
flow along the walls, which is mass flow.. (click
volumetric and gravimetric
The key to reliable feeder design is to
make sure that the feeder is capable of discharging your product uniformly
over the entire outlet cross-sectional area.. (click
solids flow properties - shear testing
Wall friction tests are demonstrated
using several wall surfaces, which lead to determining the hopper slope
required to ensure flow along your hopper walls.. (click
segregation - segregation mechanisms and solutions
A detailed discussion of the mechanisms
that cause segregation. Segregation is a major problem in many
industries such as pharmaceuticals, foods, batteries... (click
devices - assistance to gravity flow by various "flow aids"
This lecture explores the area of flow
aid devices that can be used to enhance or encourage flow from bins and
hoppers such as bin dischargers and vibrators.. (click
Lecture 7: Hopper retrofits to existing systems - cones, wedges, liners &
Geometry modifications are considered,
such as wedge type hoppers, splitters and chutes. These modifications are
practical and will resolve many flow issues... (click
examples - determining hopper geometries
Joe uses the Jenike design approach to
calculate opening sizes and hopper angles. Joe discusses minimum opening
size calculations and hopper angles.. (click
Watch the complete Solids Flow Lectures
Lectures: 1 through 8
Subscription: 21 days
$234 $110 (US)
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everyone if your office can take Joe's Lecture Series!
Marinelli is the President of Solids Handling Technologies, Inc. and
has a BS in Mechanical Engineering from Northeast University. Joe
has been providing consulting services since 1972, as a former
consultant with Jenike & Johanson, Inc. He has years of experience
testing solids plus designing bins and feeders for reliable flow.
Later, as a Principal and Director of bulk
solids handling for a firm that manufactured feeders, Joe was responsible
for developing test programs, evaluating test results, designing bins and
feeders and consulting on various solids handling projects. In addition, he
was responsible for marketing their equipment, services and expertise.
Joe is a member of the American Society of
Testing Materials, ASTM, American Society of Mechanical Engineers, ASME, and
American Institute of Chemical Engineers, AIChE. Joe lectures
frequently, has published several articles including a chapters in a
chemical encyclopedia and food technology publication.
He provides seminars, including an annual one
at the University of Wisconsin, Madison, WI., and is also a featured
columnist, Ask Joe!, for the website,
Please feel free to contact our author at:
Solids Handling Technologies, Inc.
1631 Caille Court
Fort Mill, SC 29708
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