VENTURI CLEANING SYSTEM WITH TWO ADJUSTABLE VENTURI GROOVES

摘要

The invention relates to a differential pressure cleaning system consisting of a flow pipe (7) with a throttle (1) and at least one cleaning fluid feed device (14) fitted over the throttle (1) for treating exhaust gases from technical processes which give off gases, vapours and dusts. The throttle (1) in the flow pipe (7) takes the form of an approximately rectangular slot (2) at its narrowest point. Downstream of the slot (2) there is a displacement body (3) extending over the entire length of the slot arranged to be movable towards and away from the slot (2). This provides two roughly parallel venturi grooves (6) between the walls of the throttle (1) and the outside wall of the displacement body (3). The cross-sections of the two venturi grooves (6) can be adjusted as desired by moving said displacement body (3). The groove (1) in the flow pipe (7) preferably consists of two commercially available transverse pipes (8) of circular cross-section. The flow pipe (7) and the displacement body (3) may also be made from commercially available tubes with a circular cross-section. The differential pressure cleaner thus provided can be economically produced and combines the advantage of venturi and annular gap cleaners.