Removable damper for chemical recovery furnace

Apparatus for adjusting combustion air flow into a furnace from a windbox via an air port proximate the rearward side of said windbox, said windbox also being provided with an opening in a forward side thereof, said apparatus comprising:

• a faceplate adapted for removable attachment over said opening in the forward side of said windbox,
• a damper blade for controlling air flow, and
• a cantilevered arm pivotally mounted to the side of said faceplate exterior of said windbox, said faceplate having an aperture through which said cantilevered arm extends to the interior of said windbox,
• wherein said cantilevered arm carries said damper blade proximate an end of said arm remote from said faceplate for urging said damper blade toward said air port in slidable but unattached relation thereto for controllably positioning said damper blade in blocking relation to a portion of said air port in accordance with the pivotal attitude of said arm with respect to said faceplate, said damper blade being movable with said arm in a direction substantially perpendicularly away from said air port to enable selective insertion and removal of said damper blade through said opening in the forward side of said windbox with selective attachment and removal of said faceplate.

Apparatus for adjusting combustion air flow into a furnace from a windbox via an air port, said apparatus comprising:

• a faceplate spaced from said air port at the forward side of said windbox,
• a damper blade for controlling air flow, and
• a cantilevered arm pivotally mounted to said faceplate,
• wherein said cantilevered arm carries said damper blade for urging said damper blade toward said air port in slidable but unattached relation thereto for controllably positioning said damper blade in blocking relation to a portion of said air port in accordance with the pivotal attitude of said arm, said damper blade being movable with said arm in a direction away from said air port to enable selective insertion and removal of said damper blade with respect to said air port, and
• wherein said faceplate is provided with a port for enabling manual engagement of said damper blade.

Apparatus for adjusting combustion air flow into a furnace from a windbox via air port means defining an opening from said windbox into said furnace, said apparatus comprising:

• a faceplate spaced from said air port means at the forward side of said windbox,
• a damper blade disposed in slidable but unattached relation to said air port means on the side thereof toward said faceplate for controlling air flow through said air port means, and
• cantilevered arm means for urging said damper blade toward said air port means to hold said damper blade in said slidable relation with respect to said air port means and controllably positioning said damper blade in blocking relation to a portion of said air port means,
• said cantilevered arm means being pivotally mounted with respect to said apparatus and carrying said damper blade whereby said damper blade is movable with said arm means.