Abstract

A screening device (100) is disclosed. The screening device comprises a screen cloth (115) for separating a screened fraction, a perforated support structure (110, 111) for supporting the screen cloth (115), an outlet (120) for the screened fraction and an inlet (122) for compressed air. The screening device further comprises a declogging nozzle (136, 137) and an air conduit (130, 131) extending between said inlet (122) and said declogging nozzle (136, 137) for blowing compressed air against the screen cloth (115). The perforated support structure (110, 111) and the screen cloth are rotatable in relation to the declogging nozzle (136, 137). Also a screening system and a screening method are disclosed.

IPC Classes  ?

• B07B 1/46 - Constructional details of screens in generalCleaning or heating of screens
• B07B 1/56 - Heated screens
• B07B 1/58 - Heated screens heated by heated fluid
• B07B 1/12 - Apparatus having only parallel elements
• B07B 1/20 - Stationary drums with moving interior agitators
• B07B 1/24 - Revolving drums with fixed or moving interior agitators
• B07B 1/55 - Cleaning with fluid jets