The screen panels consist of individual continuous longitudinal wires corrugated in the screening plane with square screen openings in a diagonal hole arrangement. The individual longitudinal wires lying flat next to each other are held in place by PUR strips melted in at defined intervals so that the longitudinal wires between these cross-connections have a springy freedom of movement. OptiScreen HS harp screens have the advantage that the longitudinal wires lie exactly in the screen plane, particularly in the case of cross-tensioned screen panels. This makes it possible to increase the spacing of the PUR cross-connections and improve screen cleaning. The spacing of the PUR cross connections should be designed so that there is one cross connection on each of the cross supports of the screening machine frame.
OptiScreen prevents blockages
OptiScreen HS harp screens have square screen openings. The resilient freedom of movement of the individual longitudinal wires enables natural vibrations that make the screening surface ‘elastic’ so that even difficult-to-screen feed material can be processed. Whether the feed material is moist, wet, highly smearing, clayey or dry.
Advantages
- self-cleaning
- counteract clogging
- ensure sharp grain separation
That is why OptiScreen HS harp screens are versatile, especially wherever there is a risk of clogging for screen panels with fixed mesh openings.
OptiScreen HS harp screens are suitable for all types of screening machines, namely:
- with cross wire layers and tensioning folds for longitudinal and cross tensioning machines
- with PUR strips as ‘screen panels’ for screening machines with flat screen decks.
