MI: Screw-Screen
Operating Principle
Screw-screens are integrated machines consisting of a screen, a shaft-less spiral and
an compaction unit. During operation, solids within the incoming flow will progressively
collect onto the screen mesh and cause it to gradually blind. The upstream water level will
rise and at a predetermined level, the spiral will be activated. Brushes fixed to the periphery
at the lower section of the spiral will then clean the screen mesh and convey the solids up to the
compaction zone.
MI screw-screens can be supplied either for direct installation into a channel or as a complete package inside a
stainless-steel tank with or without the option of a bypass rake screen. Continuous bagging systems are available
to receive screenings and abate odour, the screenings can then be sealed without any personal contact.
MI Screw-Screen in a channel
MI Screw-Screen in a box
SP Screw-Screen: For High Solids Content Applications
SP-Range screw screens are designed to handle higher solids content
or concentrations including irregular size matter or materials with negligible
risk of jamming. Screens are self-cleaning and available in various sizes.
You will notice that unlike the MI Screw-Screen, the SP Screw-Screen has a
rectangular transport zone
to reduce jamming in high solids content applications. The MI Screw-Screen has a round transport zone
SP Screw-Screen in a channel
