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公开(公告)号：US4634536A
公开(公告)日：1987-01-06
申请号：US747153
申请日：1985-06-20
摘要： A method of separating solid particles from the liquid constituent of a slurry, containing solids having a "wide" particle size distribution, that is, a size distribution wherein the equivalent diameter of particles in the slurry ranges between at least 15 microns and 150 microns. The method uses a screen bowl centrifuge and comprises: (a) establishing a bed of solids on the screen section of the centrifuge whose maximum radial thickness is greater than 15 times the mean particle equivalent diameter of said solids in the slurry; (b) operating the scroll of the centrifuge at a speed within the range of 0.5 to 10% of the bowl speed; and (c) returning at least a portion of the solids contaminated centrate from the centrifuge to the interior of the screen section of the bowl so as to deposit the centrate on the solids passing over the screen section at or adjacent a region of maximum solids thickness.
摘要翻译： 从含有“宽”粒度分布的固体的浆液液体成分中分离固体颗粒的方法，即其中浆料中颗粒当量直径在至少15微米至150微米之间的尺寸分布。 该方法使用筛碗式离心机，其包括：（a）在离心机的筛网部分上建立固体床，其最大径向厚度大于浆料中所述固体的平均颗粒当量直径的15倍; （b）以在碗速度的0.5至10％的范围内的速度操作离心机的涡旋; 和（c）将至少一部分固体污染的浓缩物从离心机返回到碗的筛部分的内部，以便将浓度沉积在通过筛分部分的固体上或邻近最大固体厚度的区域 。
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公开(公告)号：US5584791A
公开(公告)日：1996-12-17
申请号：US153743
申请日：1993-11-17
IPC分类号： B04B1/20
CPC分类号： B04B1/20 , B04B2001/205
摘要： A decanting type centrifuge comprising a bowl which rotates about a horizontal or vertical axis and contains a helical screw conveyor for separating a slurry fed to the bowl into its constituent solids and liquid, the scroll being arranged to rotate at a differential speed within the bowl and wherein at least some of the flights of the scroll conveyor are inclined backwards relative to the solids discharge end of the bowl.
摘要翻译： 一种倾析型离心机，其包括围绕水平或垂直轴线旋转的碗，并且包含用于将供给到碗的浆料分离成其组成固体和液体的螺旋螺旋输送机，所述涡卷布置成以不同的速度在碗内旋转， 其中，所述涡旋传送器的至少一些翼片相对于所述碗的固体排出端向后倾斜。
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公开(公告)号：US5182020A
公开(公告)日：1993-01-26
申请号：US715506
申请日：1991-06-14
申请人： Geoffrey L. Grimwood
发明人： Geoffrey L. Grimwood
CPC分类号： B04B3/04 , B04B1/20 , B04B2001/2041
摘要： A centrifuge, for example a decanter type centrifuge, comprises a bowl (10) rotatable about a longitudinal rotational axis (Y), an inlet (14) for feeding into the bowl a slurry to be separated, and a helical scroll conveyor (12) rotatably mounted about the rotational axis and adapted to be rotated within the bowl at a different speed from that of the bowl in order to scroll particles adjacent to the bowl wall to a solids discharge end of the bowl. The decanter further comprises a plurality of walls (23) at least partly submerged in the centrate and defining passages therebetween. By providing a plurality of passages, through which the centrate to be clarified can travel, particles (e.g. solids) to be separated from the centrate have a short distance to travel under centrifugal force before entering the boundary layer at the walls of the passages. This enables more of the fine particles in the centrate to be separated out.
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公开(公告)号：US4443213A
公开(公告)日：1984-04-17
申请号：US513044
申请日：1983-07-12
申请人： Geoffrey L. Grimwood , John Wright
发明人： Geoffrey L. Grimwood , John Wright
IPC分类号： B04B1/20
CPC分类号： B04B1/20 , Y10S494/90
摘要： A decanting type centrifuge having a main bowl which is adapted to be rotated about its longitudinal axis and which contains a helical scroll conveyor which is arranged to rotate about the main bowl axis at a slightly different speed to the main bowl for scrolling separated solids to a solids discharge end of the bowl. The centrifuge includes a means which acts to isolate a gas volume radially inwardly of the inner liquid surface within the bowl and also a passage arrangement which enables gas to be extracted continuously from the isolated gas volume to a location external to the main bowl.
摘要翻译： 一种倾析式离心机，其具有主碗，其适于围绕其纵向轴线旋转并且包含螺旋形涡旋传送器，螺旋形涡旋传送器布置成以与主碗略微不同的速度围绕主碗轴线旋转，以将分离的固体滚动到 固体排出端的碗。 离心机包括用于隔离碗内的内部液体表面的径向向内的气体容积的装置，还包括使气体能够从隔离气体体积连续提取到主碗外部的位置的通道装置。
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公开(公告)号：US5370796A
公开(公告)日：1994-12-06
申请号：US955920
申请日：1992-10-02
申请人： Geoffrey L. Grimwood
发明人： Geoffrey L. Grimwood
摘要： A centrifuge basket shell formed by winding fiber-reinforced resin tape in a helical pattern over a thin shell plate which contains a plurality of holes for the passage of liquid therethrough, perforations being formed in the helix pattern of the wound tape by means of respective hollow ferrules connected rigidly to a cylindrical part of the shell plate, so as to enable liquid which passes through said holes in the shell plate to pass also through the helices of wound tape without increasing the stresses induced therein by rotation.
摘要翻译： 一种离心机筐壳，其通过将纤维增强树脂带以螺旋形图案缠绕在薄壳板上，该薄壳体包含多个用于液体通过的孔，穿孔通过相应的中空部分形成在卷绕带的螺旋图案中 套管刚性地连接到壳板的圆柱形部分，以便使通过壳板中的孔的液体也能通过缠绕带的螺旋，而不增加通过旋转而在其中引起的应力。
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公开(公告)号：US5460717A
公开(公告)日：1995-10-24
申请号：US135790
申请日：1993-10-13
IPC分类号： B01J19/00 , B01D33/11 , B04B3/00 , B04B11/04 , B04B11/08 , B04B15/02 , B04B15/12 , F26B3/088 , F26B7/00 , F26B11/08 , B01D33/06 , B01D35/18
摘要： An apparatus which performs solids particles separation from a liquids/solids slurry, and subsequent drying of such solids particles, within a single enclosure. Further processing functions, such as reslurry washing, plug washing, crystal growth and other reactions, can also be carried out within that single enclosure. The single enclosure comprises a partly perforated centrifuge drum which can be rotated about a vertical axis at a fast speed at which the centrifugal effects on material in the drum are substantial so that partly dried solids collect in a substantially cylindrical form on the side wall of the drum, and a slow speed at which the centrifugal effects on material in the drum are negligible; a stripping mechanism which is displaceable within the drum, when the drum is rotated at slow speed, for dislodging solids which have been built up on the side wall of the drum during rotation at high speed; and means for heating at least a bottom part of the drum on which partly dried solids collect when dislodged by the stripping mechanism from the side wall of the drum. The solids can themselves thus be heated, or otherwise processed, to cause evaporation therefrom of any remaining liquid.
摘要翻译： 在单个外壳内执行固体颗粒从液体/固体浆料分离以及随后干燥这种固体颗粒的装置。 还可以在该单个外壳内进行诸如再次洗涤，塞子洗涤，晶体生长等反应的其它处理功能。 单个外壳包括部分穿孔的离心机鼓，其可以以垂直轴线以快速的速度旋转，在该速度下离心对鼓中的材料的影响是显着的，使得部分干燥的固体以基本上圆柱形的形式收集在 鼓和对滚筒中的材料的离心效应可以忽略的慢速度; 当滚筒以低速旋转时可移动的滚筒内的剥离机构，以便在高速旋转期间移除在鼓的侧壁上积累的固体; 以及用于加热至少一个滚筒的底部部分的装置，其中部分干燥的固体在由剥离机构从滚筒的侧壁移开时收集。 因此，固体本身可被加热或以其它方式加工，从而使任何剩余的液体蒸发。
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7.发明授权
公开(公告)号：US5119032A
公开(公告)日：1992-06-02
申请号：US572165
申请日：1990-08-23
申请人： Geoffrey L. Grimwood
发明人： Geoffrey L. Grimwood
IPC分类号： G01N27/20
CPC分类号： G01N27/205
摘要： A method and apparatus for testing, in situ, for imperfections in an inert coating of a moving metal component of an apparatus (e.g. a metal basket of a centrifuge) involves covering the inert coating with an electrically conductive liquid, applying an electrical voltage across the inert coating while the apparatus is operational, monitoring the current or applied voltage, and utilizing the measured current or voltge to provide an indication of the condition of the inert coating. If the coating is defective, the conductive liquid will find its way into any flaws or imperfections, thereby providing a path of lower electrical resistance.
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公开(公告)号：US4159798A
公开(公告)日：1979-07-03
申请号：US908436
申请日：1978-05-22
CPC分类号： B04B1/18
摘要： In a disc bowl centrifuge, means are provided for introducing pressure fluid into a piston chamber serving to operate a discharge valve controlling outlet of processed material from the bowl, which means are such as to allow a pressure substantially higher than atmosphere and sufficient to hold the discharge valve closed against the opening forces exerted thereon by process material subjected to centrifugal force in the bowl.
摘要翻译： 在盘式离心机中，提供了用于将压力流体引入活塞室的装置，该活塞室用于操作排出阀，该排出阀控制来自碗的处理材料的出口，这意味着允许压力显着高于大气压并足以保持 排出阀抵靠在碗中经受离心力的加工材料施加在其上的打开力。
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