| 摘要 |
The device includes a rotary member (16) comprising a shaft (22) passing through the arc (room) (18) of the furnace, connected to the turbine (12), and a sleeve (24) fitted over the part of the shaft (22) outside the furnace. The sleeve (24) is mounted so that it can rotate in rolling-contact bearings (19, 20). The shaft (22) is centred with respect to the sleeve (24) by complementary cylindrical (36, 36A) and conical (tapered) (38, 38A) surfaces formed on the shaft (22) and the sleeve (24). The axial positioning of the shaft (22) with respect to the sleeve (24) is provided by these same complementary conical surfaces (38, 38A) and a Belleville washer (46) located between one end of the sleeve (24) and a nut (48) screwed onto the shaft (22). Application to stirring up the gases inside a furnace used in the iron and steel industry. <IMAGE>
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