| 摘要 |
The invention relates to a spinning wheel unit in a device for the fibration of mineral melt by means of centrifugal forces. The spinning wheel unit comprises a spinning wheel shaft (1) with associated spinning wheel (2), a drive motor (6) for rotating the shaft and bearings (7, 8a, 8b) for the shaft. In order to achieve higher peripheral speeds in the shaft it is supported magnetically by, for example, one or more magnetic bearings. The drive motor (6) is in driving contact with the spinning shaft (1) and thereby with the spinning wheel (2), which is permanently attached to the spinning shaft, so that the spinning shaft's bearings constitute bearings for both drive motor and spinning wheel. The spinning shaft's higher peripheral speed allows the supply of larger quantities of various media, such as air or other gases, binders, other additives, process waste etc., through a cavity in the shaft for mixing with the fibre flow in the area immediately in front of the spinning wheel. |
