HC & LC cleaners Flashcards
(13 cards)
What is the purpose of HC cleaning
Removal of heavy and highly abrasive contaminants to protect downstream machinery
What contaminants are removed in HC cleaning
Glass
sand
metal particles
Density usually more than 2
What is the working principle of a HC cleaner
Centrifugal force created by circular motion. This forces particles with higher density to outer vortex and lower density accumulate in the centre. Due to the cone shape heavy particles go to the bottom and the particles in the centre rise to the top
What is the general consistency of a HC cleaner
3-6%
What is the most crucial value for a HC cleaner
The differential pressure.
It allows us to monitor if the cleaner is working correctly/monitor rotation inside
What contaminants would a forward LC cleaner remove?
Sand
Filler agglomerates
Small metals
What contaminants would a reverse LC cleaner remove?
Wax
Stickies
Styrofoam
What makes a high performing LC cleaner
Long
Small diameter
Small angle
Tackle contaminants of similar density
Where does the reject go in a forward cleaner
Heavy rejects to bottom, accepts out the top
Where do rejects go in a reverse cleaner
light rejects are sent out the top, accepts go out the bottom
How does a combi cleaner look?
Light rejects come out the top, so do accepts, heavy rejects come out the bottom
Match the contaminant to the cleaner
Heavy contam/Light contam
Forward/Reverse
Forward = heavery rejects
Reverse = light rejects
What does the X50 calculation tell you?
Diameter of particle which is separated with with probability of 50%
Smaller X50 means better cleaning performance as able to remove smaller particles
