Port rodder with anti-drift feature

Details Port rodder with anti-drift feature Port rodder with anti-drift feature

F - Mech Eng,Light,Heat,Weapons

23

J

F23J 3/00 (2006.01)

Patent

CA 2059347

ABSTRACT OF THE INVENTION An anti-drift mechanism for a downwardly oriented port rodder for cleaning a port opening of a recovery boiler. The anti-drift mechanism prevents a cutter of the rodder from accidentally drifting from a retracted holding position into the port upon the loss of holding power to the actuator. Two embodiments are disclosed. The first is a frictional engagement with the port rodder while the second involves the use of a valve in conjunction with the actuator to trap fluid pressure and maintain the rodder in the holding position.

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