Patent ID: 6257156
Filing Date: 2001-07-10
Classification: F23L,F23M

Abstract:
A wind box intended for the air supply of a chemical recovery furnace, comprisinga frame (1) having at least one air inlet opening (2) and at least one air supply opening (3) for taking air through the frame (1) to the recovery furnace,at least one at least partly curved guide way (14) which is connected to the frame,at least one actuator (25) which is arranged to be movably supported against the guide way (14) for regulating the air flow through the frame (1) and for cleaning each air supply opening (3), andmeans (19, 21) connected to the actuator (25) for moving the actuator (25) along the guide way (14),characterized in thateach guide way (14) comprises both a section curved in a first direction and a section curved in a second direction, andthe actuator (25) is arranged to be supported against each guide way (14) at least two points deviating in the direction of the guide way (14),whereby the direction of the actuator (25) follows the direction of the guide way (14) when the actuator (25) is moved along the guide way (14).