| 摘要 |
<p>1328021 Glass fibre production OWENSCORNING FIBERGLAS CORP 13 Sept 1971 [14 Sept 1970] 42663/71 Heading C1M A hollow centrifuge spinner 78 comprises an imperforate bottom end section 100, 110 and a peripheral wall section 140 having a plurality of stream flow orifices 152 in the peripheral wall, the passages adjacent the top end of the wall having greater flow resistance than the passages at the bottom end of the wall. The variation in flow resistances is preferably achieved by employing a wall 140 of varying thickness with the thickest portion at the top end so that the passages 152 at the top end have a greater length than those at the bottom end. The bottom section has an upwardly inclined portion 110 adjacent the wall 140 which in turn has an inwardly directed flange 112 at its top end. An annular combustion burner is provided adjacent the spinner with an annular throat 70 which discharges hot gases into a heat transferring relationship with the wall. The flange 112 is shielded from the hot gases by a cooled baffle 156. The spinner is also surrounded by a blower construction 122 which provides an attenuating blast through outlet 130 and induced air through passage 142. In use a stream of molten glass 18 is delivered on to the inclined portion 110 and the spinner is rotated by means of a vertical shaft (84) thus driving the glass towards the wall 40. As a result of the impingement of hot burner gases on the wall 140, the glass at the top end of the wall is at a higher temperature than that at the bottom end. This is compensated for by the greater flow resistance of the top passages thus enabling the production of fibres of uniform diameter.</p> |
