Patent ID: 8349057
Filing Date: 2013-01-08
Classification: B01D

Abstract:
1. Method for the backflushing of filters made of thin-walled textile filter bodies using pressure pulses in a flushing air flow, comprising: extending a plurality of separate withdrawal lines from a compressed air container, each withdrawal line meeting at a Y-branch pipe that combines a compressed airflow from each of the separate withdrawal lines into a single flush line; configuring each separate withdrawal line with an individual quick-acting valve for controlling the compressed airflow through each separate withdrawal line; measuring a pressure on the wall of the filter bodies; and generating a single pressure pulse through the single flush line, in response to a trigger effected by a correspondingly large drop in the pressure on the wall of the filter bodies, by individually opening each of the quick-acting valves to create a series of partial pressure pulses in each separate withdrawal line, the opening time of each individual valve being separately controlled so that the partial pressure pulses travel through the Y-branch pipe and arrive simultaneously at the inlet of the common flushing line as the single pressure pulse.