MELT FILTERS | PROCESSING
Belt refinements Last year, Parkinson Tech- nologies’ Key Filters brand unveiled several refinements to its KCH continuous belt screen changer, including a more robust construction, cooling enhancements and maintenance features. “From the start [in 2012], the KCH has been a well-received high-perfor- mance machine in the continu- ous melt filtration market,” said Justin Marriott, Key Filters product manager. “This recent iteration saw the most advance- ments since the KCH’s inception.” As a consequence, he says the system is now more robust, faster, more reliable, and easier to maintain.
IMAGE:
PARKINSON TECHNOLOGIES
Marriott says this accelerates formation of the sealing plug, “which allows the KCH to advance the screen at an even quicker rate, thus filtering out higher volumes of contaminants and reducing the risk of
downtime due to seal failure.” Marriott also says that the KCH is now more capable of
reacting to unintended varia- tions in extrusion line condi- tions, such as an over-ambitious increase in extruder screw speed at start-up or an interrup- tion in the cooling water to the
Sensor updates To increase overall robustness, vital machine sensors were guarded, moved further away from high-heat locations and upgraded to meet extreme produc- tion environments. Marriott cites the puller sensor as one example, which has been upgraded from a string potentiom- eter to an extreme-duty, non-contact inductive sensor that has already been proven across a broad range of demanding applications. Additional developments include increased cooling through the inlets and outlets, resulting in three times the flow rate compared to the previous version.
screen changer (which can result in the loss of the sealing plug in the screen outlet). “The Key Filters team looked at ways to reduce potential down-time to these unfortunate situations by separating the puller and outlet assemblies. The heated polymer will bypass the puller assembly, eliminating component damage and providing an easier clean-up if plug loss occurs,” he said.
CLICK ON THE LINKS FOR MORE INFORMATION: �
www.powerfil.com �
www.fimic.it �
www.gneuss.com �
www.nordsonpolymerprocessing.com �
www.ettlinger.com �
www.mircan1979.com �
www.ricco.com.pl �
www.maag.com �
www.parkinsontechnologies.com
Left: The latest version of the Key Filters KCH continuous belt filter is said to offer greater throughputs and easier maintenance
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