CN101237939A - 螺旋式离心机 - Google Patents

螺旋式离心机 Download PDF

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Publication number
CN101237939A
CN101237939A CNA2006800197691A CN200680019769A CN101237939A CN 101237939 A CN101237939 A CN 101237939A CN A2006800197691 A CNA2006800197691 A CN A2006800197691A CN 200680019769 A CN200680019769 A CN 200680019769A CN 101237939 A CN101237939 A CN 101237939A
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hollow shaft
helical conveyor
feed pipe
helix
conveyor centrifuge
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CN101237939B (zh
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G·海德
K·克林格
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Hiller GmbH
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Hiller GmbH
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04BCENTRIFUGES
    • B04B1/00Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/20Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04BCENTRIFUGES
    • B04B11/00Feeding, charging, or discharging bowls
    • B04B11/06Arrangement of distributors or collectors in centrifuges
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04BCENTRIFUGES
    • B04B1/00Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/20Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
    • B04B2001/2033Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl with feed accelerator inside the conveying screw

Abstract

螺旋式离心机用于连续分离不同密度的流动材料,包括一旋转滚筒(14),其具有设置在转子壁锥形部段(20)上的用于重相(56)的排料口(54)和设置在封闭着旋转滚筒(14)的端壁(46)上的用于轻相(50)的闸门口(48),还包括一可在旋转滚筒(4)内部旋转的螺旋输送器(22),该螺旋输送器具有用于向排料口(54)输送重相(56)的、安装在一空心轴(28)上的螺旋线(26);以及包括一同轴设置在空心轴(28)内部的混合进料管(30),其通向在空心轴(28)内构成的馈料室(42),馈料口(44)从该馈料室通向螺旋线(26)。在进料管(30)的输送方向(32)上,在馈料室(42)前面具有一排气元件(58),其在包围着进料管(30)的环形室(38)内产生一种与进料管(30)内的输送方向(32)同方向的抽吸气流。排气元件(58)可以具有优点的方式作为一叶轮泵的叶轮件(62)构成。

Description

螺旋式离心机
本发明涉及一种按权利要求1前序部分所述的螺旋式离心机,用于连续地分离不同密度的流动材料。
在这种螺旋式离心机中,混合进料管通到馈料室内的部位是一种临界位置,因为这里存在的危险是,部分混合料由于涡流或者过高的流量而回流到空心轴的空腔内,并沉积在螺旋输送器的空腔内部。为了在这里进行补救,在公知的结构上在螺旋输送器空心轴的壁中设有孔,这些沉积制品通过这些孔可以排到螺旋线的区域内。但在这种情况下存在的危险是,沉积制品随着时间变化附着在空腔内和特别是其死角内,并因此使旋转的螺旋输送器产生失衡。
因此,过去人们试图通过在空心轴内部安装一保护管,并使混合进料管穿过该保护管通向馈料室的办法,来回避在螺旋输送器较大空腔内沉积制品的问题。然而在这种解决方案中,该问题只能部分得到解决,因为始终存在的危险是,在保护管与混合进料管之间比较狭窄的环形室仍受到回流混合料的困绕。
发明内容
本发明的目的在于,对所述结构的螺旋式离心机这样进行改进,使其有效防止进料管末端上回流的危险,从而有效防止由于混合料回流而造成沉积的危险。
该目的依据本发明在一种螺旋式离心机中由此得以实现,即在进料管的输送方向上在馈料室前面设有一排气元件,该排气元件在包围着进料管的环形室内产生一种与进料管内的输送方向同方向的抽吸气流。
通过进料管外圆周上的这种抽吸气流,以简单手段防止混合料回流到空心轴的空腔内,因为抽吸气流与这种回流反作用,并将混合颗粒阻挡在环形室的入口处。
在本发明的进一步的改进方案中,进料管穿过将环形室与空心轴的空腔隔开的保护管而延伸,抽吸气流由于环形室的截面较小而明显加速度,从而更加有效地与所不希望的回流进行反作用。
在本发明的进一步的改进方案中,所述排气元件具有一中心入口区,进料管的通向馈料室的末端伸入到该区内,其中,按照一种非常简单和有益的解决方案,排气元件可以作为叶轮泵的叶轮件构成。
该叶轮件可与空心轴整体构成,并具有抽吸通道,该抽吸通道从中心入口区出发,并以与空心轴的旋转方向相反的弯曲曲线通向螺旋线。
利用本发明一方面达到在空心轴的比较大的空腔内没有沉积制品的目的,其中,同时消除了相当狭窄的保护管受回流制品颗粒困绕的危险。排气元件的作用是,在螺旋输送器旋转期间始终将空气通过环形室排出,该环形室由此始终通风,并因此防止沉积。
附图说明
下面借助附图所示的实施例对本发明进行说明。其中:
图1示出依据本发明的螺旋式离心机的示意纵剖面图;
图2示出与图3剖面II-II相应的馈料室区域内螺旋输送器的放大局部图;以及
图3示出图2中的平面III-III的截面图。
具体实施方式
从图1可以看出,在一仅部分示出的外壳10内,在轴承12中可旋转地支承一旋转滚筒14,其由一马达16传动。旋转滚筒14由一圆柱形部段18和一锥形部段20组成。在旋转滚筒14内可旋转地支承一螺旋输送器22,该螺旋输送器由一马达24以总体略高于旋转滚筒14的转速进行传动。螺旋输送器24的螺旋线26安装在一空心轴28上并这样设置,使输送方向从圆柱形部段18向锥形部段20实现。
在空心轴28的内部设置用于所要分离的混合料的一进料管30,混合料在箭头32的方向上进入到进料管30内。进料管30穿过一同轴的保护管34延伸,该保护管与空心轴28固定连接,并将空心轴28的空腔36与包围着进料管30的环形室38隔开。
进料管30的自由端40通入到一在空心轴28内构成的馈料室42中,径向的馈料口44从该馈料室通入螺旋线26的区域中。
旋转滚筒14的圆柱形部段18通过一端壁46封闭,该端壁具有用于排放轻相(leichte Phase)50的闸门口48,所述轻相流入外壳10的排料管道52内。
转子壁的锥形部段20内具有重相(schwere Phase)56的排料口54,重相与标注的箭头相应地从螺旋线26输送到排料口54。
与图1相比放大的图2和3示出在进料管30的输送方向32上,在馈料室42的前面设有一排气元件58,该排气元件具有一中心入口区60,进料管30的通向馈料室42的末端40伸入到该入口区内。特别是如从图3所看到的那样,排气元件58构成为一叶轮泵的叶轮件62,并与空心轴28整体构成。叶轮件62具有抽吸通道64,它们从中心入口区60出发,并以与空心轴28的旋转方向r(参照图3)相反地弯曲的曲线通向螺旋线26。抽吸通道64如图2和3所示加工在空心轴28中。
在螺旋式离心机工作时,螺旋输送器22并因此叶轮件62的旋转的作用是,在保护管34与进料管30之间的环形室38内始终产生抽吸气流,该抽吸气流在图2中采用虚线箭头标注,并与进料管30内的输送方向32同向。该抽吸气流有效地确保:从进料管30的末端40排出的混合料部分完全进入到馈料室42中并不向环形室38回流。环形室38由此始终通风并防止沉积。即使在进料管30内的流量V大于通过馈料口44的流量V1,通过所述由叶轮件62所产生的抽吸气流也会阻止向环形室38之中的倒灌。
另一种优点是,依据本发明产生的抽吸气流在虚线标注的箭头方向上有助于实现高流量V,从而较大的分体积流V1通过叶轮泵系统在压力下被压入到螺旋线26的区域内。

Claims (7)

1.螺旋式离心机,用于连续地分离不同密度的流动材料,包括一旋转滚筒,该旋转滚筒具有设置在转子壁的锥形部段上的用于重相的排料口以及设置在对于旋转滚筒进行封闭的端壁上的用于轻相的闸门口;还包括一可在旋转滚筒内部旋转的螺旋输送器,该螺旋输送器带有用于向排料口输送重相的、安装在一空心轴上的螺旋线;并且包括一同轴设置在空心轴内部的混合进料管,该混合进料管通向一在空心轴内构成的馈料室,馈料口从该馈料室通向螺旋线,其特征在于,在进料管(30)的输送方向上在馈料室(42)前方设有一排气元件(58),该排气元件在包围着进料管(30)的环形室(38)内产生一种与进料管(30)中的输送方向(32)同方向的抽吸气流。
2.按权利要求1所述的螺旋式离心机,其特征在于,进料管(30)穿过一保护管(34)而延伸,该保护管将环形室(38)与空心轴(28)的空腔(36)隔开。
3.按权利要求2所述的螺旋式离心机,其特征在于,保护管(34)与空心轴(28)固定连接。
4.按前述权利要求之一所述的螺旋式离心机,其特征在于,排气元件(58)具有一中心的入口区(60),进料管(30)的通向馈料室(42)的末端(40)伸入到该入口区内。
5.按权利要求4所述的螺旋式离心机,其特征在于,排气元件(58)作为一叶轮泵的叶轮件(62)构成。
6.按权利要求5所述的螺旋式离心机,其特征在于,叶轮件(62)与空心轴(28)整体构成,并具有抽吸通道(64),该抽吸通道从中心入口区(60)出发,并以与空心轴(28)的旋转方向(r)相反的弯曲曲线通向螺旋线(26)。
7.按权利要求6所述的螺旋式离心机,其特征在于,抽吸通道(64)加工在空心轴(28)中。
CN2006800197691A 2005-06-04 2006-05-03 螺旋式离心机 Expired - Fee Related CN101237939B (zh)

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DE102005025784.4 2005-06-04
DE102005025784A DE102005025784A1 (de) 2005-06-04 2005-06-04 Schneckenzentrifuge
PCT/EP2006/062026 WO2006131425A1 (de) 2005-06-04 2006-05-03 Schneckenzentrifuge

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KR (1) KR20080015505A (zh)
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AT (1) ATE490026T1 (zh)
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EP1899074B1 (de) 2010-12-01
US20090215604A1 (en) 2009-08-27
DE502006008446D1 (de) 2011-01-13
US7862493B2 (en) 2011-01-04
ATE490026T1 (de) 2010-12-15
KR20080015505A (ko) 2008-02-19
CN101237939B (zh) 2011-07-06
DE102005025784A1 (de) 2006-12-07
JP2008542011A (ja) 2008-11-27
EP1899074A1 (de) 2008-03-19
WO2006131425A1 (de) 2006-12-14

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