JPS6458984A - Rotary retort furnace - Google Patents

Abstract

PURPOSE: To achieve a simplification of the structure and a facilitation of the assembling by making individual beater unit bodies contact each other to prevent the breakage of the beater unit bodies. CONSTITUTION: With the rotation of a core tube 3, beater unit bodies 10 rotate separately in a state where the sides of the beater unit bodies slide in contact with each other. In this process, as the length l1 of a shaft tube 11 of each beater unit body 10 is larger than the diameter A of the core tube 3, the axis of the beater unit body 10 will not be turned sideways being deviated from the axis of the core tube 3. As the length l2 , of each blade piece 12 is set to meet l2 >7<-1/2> A, there is no over lap between the blade pieces 12. In other words, the beater unit bodies 10 rotate at specified positions with respect to the axial direction of the core tube 3 without disturbed array thereof. Thus, the individual beater unit bodies 10 are hard to break and a plurality of beater unit bodies 10 always hit the core tube 3 thereby enabling preventing of adhesion of heat tread material to the core tube 3.