| 摘要 |
449,458. Filters. KARY, O., 6, Bahnhofstrasse, Bremen, Germany. March 12, 1936, No. 7484. [Class 46] In a filter having tiers g, gl, g2 of radiallyarranged pipes for discharging compressed air or other cleansing medium into the filter bed a, the pipes of the several tiers are arranged to open into the bed at different distances from the centre. The delivery ends of the pipes may be turned tangentially, pipes of adjacent tiers being bent in opposite directions. The pipes may be fitted with detachable nozzles of the form shown in Fig. 3 having a closed end i and lateral diffusing slits k. |
