Rulmeca Corporation Video #4
Hopper Feeder Design – Part One

Rulmeca Corporation developed a growing collection of tutorials on conveyor drive design, installation, maintenance, and troubleshooting, and produced two lectures on Hopper Feeder Design.

Part one of the “Hopper Feeder Drive” series explains:

● Purposes of Hoppers
● Standard Conveyor Belt Loads
● Special Hopper Load

Using examples from iron mining, wood pulp processing, rock quarrying, road construction, and
intermodal shipping terminals, Mike Gawinski shows that the purposes of hoppers include:

● Material Storage
● Material Blending
● Interface Between Batch and Continuous Handling
● Material Metering

He uses “trick questions” to help the viewer understand how to calculate bulk material handling rates on belt conveyors in “continuous flow” and “material metering” conditions.

He explains the basic components to be considered when determining “Effective Tension (Te)”, aka
“belt pull”, on a bulk handling conveyor with continuous loading, using the Conveyor Equipment

Manufacturers Association well-known equations. These include belt pull components to overcome
momentum, gravity, and friction.

He then explains how to convert required belt pull into required power for a given belt speed,
reminding users of imperial units that 1 horsepower = 33,000 ft-lbs/minute.

Finally, he explains how a hopper creates an extra component of required belt pull due to the drag
exerted on the feeder conveyor by the material within the hopper.