Rapping mechanism for rapping the electrodes of an electrostatic precipitator

摘要

Rapping mechanism for the rapping of discharge and emission electrodes in a high voltage driven electrostatic precipitator for the cleansing of smoke gases from industrial plants, power works etc, wherein the rapping effect is obtained by means of metal balls (16) which run from the top of the precipitator to its bottom along a number of sloping tracks (8-141 which are mounted stepwise with differences of level on the electrodes or on the carrying frames (1, 6) of same, the single ball (16) in connection with its changing from one track to the following when falling freely and moving horizontally thus hitting both the underlying track and a stop (20) mounted near the lower end of each ball supplying track and thereby causing each frame (6) to receive two consecutive blows of different force so that the frame is rapped and the deposited dust is loosened and falls off, and wherein a lifting device (15-18) of known type carries the balls from a terminated passage down along the tracks to a starting position (71 for a renewed passage of the tracks.