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1. 发明申请

WO2015135823A1 DECANTER CENTRIFUGE 审中-公开
公开(公告)号：WO2015135823A1
公开(公告)日：2015-09-17
申请号：PCT/EP2015/054586
申请日：2015-03-05
申请人： ANDRITZ S.A.S.
发明人： MICHELSEN, Jan
IPC分类号： B04B1/20
CPC分类号： B04B1/20 , B04B7/04 , B04B15/00 , B04B2001/2041 , B04B2001/2075 , B04B2001/2083
摘要： The invention relates to a decanter centrifuge with a rotating bowl (1) provided with at least one solids discharge port (11) and at least one clarified liquid discharge port (15) and a screw conveyor (2) disposed coaxially within said rotating bowl rotated in the same direction with a differential rotational speed, where a feed suspension to be separated is introduced into a ring shaped space formed between said rotating bowl (1) and said screw conveyor (2) through a central feed pipe fixed to the end of the screw conveyor and supported in at least one bearing and can be separated by centrifugal force into a solid and a liquid phase so that said solid phase is discharged from said solid discharge port and said liquid phase is discharged from said clarified liquid discharging apparatus. According to the present invention it is charakterized by a liquid phase conduit (4) arranged in the hollow shaft of the rotating bowl (1) guiding the liquid phase outside of the bearings (16, 18), a liquid phase discharge valve (14) provided outside the bearing on the side facing away from the bowl (1) and screw (2) and a sealing (6) at the end of the feed pipe (10) surrounded by the liquid phase conduit. So it is possible to pressurise the system and to use the pressure from the feed pump to support the cake transport in the solids transporting part of the bowl, thereby eliminating the need for variable speed conveyor control and equipment.
摘要翻译：本发明涉及一种具有旋转碗（1）的倾析器离心机，设置有至少一个固体排出口（11）和至少一个澄清液体排出口（15）和同轴地设置在所述旋转碗内旋转的螺旋输送器（2）在相同的方向上以差速旋转速度，其中要分离的进料悬浮液通过固定在所述旋转碗（1）的末端处的中心进料管被引入形成在所述旋转碗（1）和所述螺旋输送机（2）之间的环形空间中，螺旋输送机并支承在至少一个轴承中，并可通过离心力分离为固相和液相，使得所述固相从所述固体排出口排出，所述液相从所述澄清液体排放装置排出。根据本发明，它通过布置在旋转碗（1）的中空轴中的液相导管（4）来引导液相外的轴承（16,18），液相排出阀（14）在所述轴承的外侧，所述轴承位于所述进料管（10）的由所述液相管道包围的所述侧壁（1）和螺杆（2）以及密封件（6）的外侧。因此，可以对系统加压并且使用来自进料泵的压力来支撑在碗的固体输送部分中的饼块输送，从而不需要变速输送机控制和设备。

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