Patent ID: 9186611
Filing Date: 2015-11-17
Classification: B01D

Abstract:
1. An apparatus, comprising: an air accumulator configured to retain pressurized air and extend over filter bags; an air tube coupled to the air accumulator; venturis extending from the air tube and configured to blow air into the filter bags; an accumulator valve fluidly coupling the air accumulator to the air tube; a plurality of linear rows of filter bags, each linear row extending from one end of the apparatus to a second end of the apparatus; an actuator configured to move the air accumulator and air tube over the plurality of linear rows of filter bags from a front linear row of the plurality of linear rows filter bags to a back linear row of the plurality of linear rows filter bags and move the air accumulator and air tube from the back linear row to the front linear row; a sensor configured to measure air pressure for air flowing up and into a first linear row of the plurality of linear rows filter bags in front of a second linear row of the plurality of linear rows filter bags located underneath the air tube, wherein the sensor comprises a first pitot tube extending over the first linear row and including a second pitot tube extending behind the air accumulator over a third linear row of the plurality of linear rows filter bags located behind the second linear row; and a controller configured to detect the air tube moving from over the second linear row to moving over the first linear row and actuate the accumulator valve and cause pressured air streams to flow out of the venturis and into the first linear row based on the air pressure measured by the sensor from a single one the first pitot tube or the second pitot tube and wherein the controller includes a computer readable medium.