Corrugating joint and syphon system

A rotary joint for introducing or removing a heat transfer medium relative to a drum having a hollow journal, a shell, and an axis of rotation, comprising, in combination, a stationary support adjacent the drum journal, a hollow rotary joint body mounted upon said support in communication with the drum journal, an inlet port defined in said body, a syphon tube support mounted on said rotary joint body having an outlet port, an elongated horizontal syphon tube extending through the drum journal, said rotary joint body, said syphon tube support and in communication with said port, said tube having an outer exteriorly accessible end, means supporting said syphon tube upon said syphon tube support, said syphon tube having an inner end located within the drum, a tubular threaded sleeve in communication with and rotatably mounted within said tube inner end having an axis of rotation substantially parallel to the length of said tube and having limited axial movement, torque transfer means defined on said sleeve accessible from said syphon tube outer end, an elongated syphon pipe having an upper end pivoted to said syphon tube inner end and a lower end adapted to be positioned adjacent the drum shell, said syphon pipe being pivotal between an inoperative position generally parallel to the length of said syphon tube to permit insertion through the drum journal and an operative position wherein said syphon pipe is transversely disposed to said syphon tube in communication therewith and said syphon pipe lower end is adjacent the drum shell, and a threaded bore defined in said syphon pipe upper end adapted to receive said threaded sleeve when said syphon pipe is in said operative position whereby a rotatable tool inserted through said syphon tube outer end engages said sleeve torque transfer means to rotate said sleeve to lock said syphon pipe in said operative position.