Specifications

Portable Drying/Conveying Systems Chapter 2: Functional Description 12 of 76
During regeneration, the dryer system heats the very low dew point air and forces it through
the desiccant bed. The moisture driven off the bed bleeds to the atmosphere.
Closed Loop Conveying
A high-efficiency centrifugal blower and specially designed take-off compartment provide
closed loop dry air conveying of material from the drying hopper to a sight glass loader
located at the press.
The controller includes a low-level sensor that sends a signal to the PLC and starts the blower
to convey material for a set amount of time. An adjustable conveying timer is programmed
into the controller (See page 25 to access screens and for feature operation instructions).
Once the convey time is over, the blower shuts down and starts a dump delay time to allow
material to flow into the processing machine. If a demand is still present, the PLC starts the
convey cycle over.
The PD-1 Portable Drying/Conveying System can convey material in a number of different
configurations for up to two different processing machines. See Figures 1 through 7 on the
following pages for specific examples.
Figure 1: Convey to one machine; Configuration “A”
Hopper
loader
Dry Material
Conveying Line
Machine
Loader
Conveying Closed
Loop Return Air
Line
Conveying
Filter
Machine
Conveying
Blower
Dehumidifying
Dryer
Drying
Hopper
ON
O
F
F
CONTROL
POWER
ON OFF
ALARM
HORN