The Conditioning Auger produces a bi-directional, opposing sliding movement of product within the
confines of the Double Concentric Augers [produced by the speed differential between the Intromitter
(Conditioning Auger) and the slower rotating metering auger] that gently conditions the material to a very
consistent density while simultaneously, filling the centrally located and smaller metering auger from a full
360 degrees.
Metering Auger —
The Metering Auger is a spiral type conveying device (with or without an integral
center-shaft), centrally situated inside the larger conditioning auger (or Intromitter), that is utilized to
volumetrically displace (meter) product out of the feeder’s conditioning chamber and through the
discharge cylinder. Many sizes and designs are available, the selection of which is determined by the
feed rate and the physical characteristics of the product. Rotation of the Metering Auger, within the
discharge cylinder, produces a specific volume of product discharge for each revolution.
Right Angle Downspout
—
Attached to the end of the feeder’s discharge cylinder, a Right Angle
Downspout provides an easy means for connecting the output of the feeder to auxiliary equipment, also
providing the means for a simple, dust-tight connection.
SCR Controller —
The SCR Controller is the variable speed electronic control system that precisely
regulates (and maintains) the speed of the feeder’s DC motor to the selected speed setting. Normally,
SCR Controllers provide either a 30:1 or 50:1 drive turndown ratio, depending upon the selected
controller model.
Seal Cap —
The Seal Cap exerts pressure upon the seal packing (which is located within the cylindrical
extension of the seal housing) to ensure a positive seal for the rotating drive shaft(s).
Seal Housing —
The Seal Housing assembly attaches to the feeder’s gearbox and to the conditioning
chamber. It provides the housing through which the Double Concentric Auger drive shaft assembly exits
the gearbox and enters the conditioning chamber, and includes the sealing means at the rear of the
conditioning chamber so that product does not escape from (the conditioning chamber) around the
primary (outer) conditioning auger drive shaft.
Seal Packing —
The Seal Packing is the material (usually a synthetic braided material) that produces
the seal for the two independent rotating drive shafts of the feeder. The metering auger drive shaft
rotates within the conditioning auger drive shaft at a different (faster) speed. Packing that seals the
metering auger drive shaft is compressed between the outside of the metering auger drive shaft and the
inside of the conditioning auger drive shaft. Packing to seal the conditioning auger drive shaft is
compressed between the outside of the conditioning auger drive shaft and the inside of the cylindrical
extension of the seal housing.
Supply Hopper —
When supplied, the feeder’s Supply Hopper, integral to the conditioning chamber, or
which attaches to the flange of the conditioning chamber, contains the feeder’s supply of product.
Tachometer —
When included, a digital Tachometer provides very precise speed sensing to assist in
producing the highest possible degree of DC motor speed regulation, linearity and repeatability. Acrison
SCR controllers that provide a 50:1 drive turndown ratio, or those used in conjunction with Acrison weigh
feeders, utilize a Tachometer for speed feedback data. The Tachometer may be directly connected to the
output shaft of the DC motor, through a specially designed gear-reducer, or may be installed between the
motor and gear-reducer.
Torque Limiter Coupling —
An optional device mounted between the feeder’s gear-reducer and
gearbox to provide adjustable overload protection of the drive components.
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