Patent ID: 7392751

Claim:
A port rodder assembly for a recovery boiler comprising: a wind box connected to an exterior surface of the recovery boiler; a duct positioned within the wind box, the duct affixed to and in fluid communication with an air port of the boiler, the duct having a hollow interior and an air inlet opening; a cutting head slidably mounted within the duct adjacent to the air port, the cutting head adapted to clean the air port; an actuator adapted to selectively advance the cutting head though the air port to clean the air port, and a wing pivotally mounted with respect to the duct, the wing interacting with the air inlet opening to define a cross-sectional flow area through the duct, whereby pivotal movement of the wing between a fully opened position and a closed position changes the size of the cross-sectional flow area to control the flow of air through the duct and into the air port, the wing being shaped such that the cross-sectional flow area smoothly decreases as incoming air flows through the duct to the air port when the wing is in the closed position; wherein the cutting head is adapted to be slidably moveable independent of the wing such that the cutting head can be advanced or retracted with the wing in any position without interfering with the wing.