Portable Drying Systems - Some Now Have Color Touch Screen PLC Controls as STANDARD!
Throughputs up to about 150 or 200 lb./hr.
The use of Portable Dry/Convey units has to be weighed against Central Drying/Conveying to see which option is best for any given processor.
The concept of a drying system that can move from machine to machine actually developed with processors themselves who modified equipment into portable devices because they needed to:
All of these reasons make a great deal of sense if you are only doing occasional drying.
Central Drying/Conveying is usually the most efficient way to get materials to your machines if:
Still, Portable Dry/Convey units are very popular and several types of dryers are available as Dry/Convey models including:
These models include the Dryer, Drying Hopper with a Vacuum Receiver a Vacuum Pump, all mounted on a frame with casters. A Machine-Mounted Vacuum Loader or Receiver is also supplied to be mounted on the process machine throat. It is not practical to use them for throughputs above about 200 lb./hr. because the unit wi ould simple be too large to push around the plant floor.
Controls have to be designed for both drying and conveying functions. Some microprocessor controls use various codes to describe errors and function buttons for programming parameters. There are also touch screen controls with intuitive icons and keypads for programming functions. With touch screen controls, errors are clearly spelled out in easily understood text messages. There are even controls that include features like over-drying protection for moisture-sensitive resins like nylons and photo-enhanced maintenance and trouble-shooting guides.
Some manufacturers charge extra for things like a warning light or a dew point analyzer, while others include those as standard.