| 摘要 |
PCT No. PCT/DE94/00959 Sec. 371 Date Mar. 11, 1996 Sec. 102(e) Date Mar. 11, 1996 PCT Filed Aug. 19, 1994 PCT Pub. No. WO95/07747 PCT Pub. Date Mar. 23, 1995The 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 mixtures of gases, vapors and dusts. The throttle (1) located in the flow pipe (7) takes the form of an approximately rectangular slot (2) at its narrowest point. A displacement body (3) is arranged downstream of the slot (2), extending over the entire length of the slot and mounted in such a way as 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 outer wall of the displacement body. The cross-sections of these two venturi grooves (6) can be adjusted as desired by moving the displacement body (3). The throttle (1) in the flow pipe (7) is preferably realised by two commercially available transverse pipes (8) displaying a circular cross-section. The flow pipe (7) and the displacement body (3) may also be made of commercially available pipes with a circular cross-section.
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