Water collecting device for endlessly circulating water-absorbing air permeable belt for dewatering of e.g. paper web, has collecting tray arranged in deflection region of belt, where deflection angle of belt is larger than specific degree

摘要

The device has a collecting tray (3) arranged in a deflection region of an endlessly circulating water-absorbing air permeable belt (1) by a deflection element (2) e.g. rotatable guide roller, on a side of the belt, where the side lie opposite to the deflection element. The tray is sealed opposite to the belt and connected with a low pressure source. A deflection angle (4) of the belt is larger than 60 or 90 or 110 or 130 degree. The guide roller includes a diameter ranging between 200 and 800 millimeters. A permeability of the belt lies between 50 and 50 cubic feet per minute.