公开(公告)号：WO1991013686A1

公开(公告)日：1991-09-19

申请号：PCT/DK1991000075

申请日：1991-03-12

Applicant: ALFA-LAVAL SEPARATION A/S ,  MADSEN, Bent

Inventor： ALFA-LAVAL SEPARATION A/S

IPC: B04B01/20

CPC classification number: B04B1/20 ,  B04B2001/2033

Abstract: A decanter centrifuge comprises a drum (1) with a conveyor (2) containing an inlet (4). The liquid to be separated flows in a jet centrally into the inlet (4) towards an end wall (11), at which the liquid is radially distributed and flows axially onwards towards the second end wall (13) through an area of the inlet (4) free of members imparting an angular velocity to the liquid. The inlet (4) is provided with inlet apertures (6) positioned on a radius larger than the radius to the overflow edge (9) at the liquid discharge. The design of the inlet (4) implies that the free liquid surface in the inlet during operation is drawn far towards the axis of the drum, thereby causing excess energy supplied to the liquid during acceleration to the angular velocity of the conveyor (2) to be dissipated in the comparatively thick liquid layer before the liquid discharges into the separation space (7) through the inlet apertures (6).

Abstract translation: 沉降式离心机包括具有包含入口（4）的输送机（2）的滚筒（1）。 待分离的液体以喷射的方式朝向端壁（11）中心流入入口（4），在该端壁处液体被径向分布并且通过入口的区域朝向第二端壁（13）轴向向前流动 4）没有赋予液体角速度的构件。 入口（4）设置有入口孔（6），该入口孔位于大于在液体排出口处的溢流边缘（9）的半径的半径处。 入口（4）的设计意味着在操作期间入口中的自由液体表面被拉向鼓的轴线，从而在加速期间向输送机（2）的角速度提供给液体的过量能量到 在液体通过入口孔（6）排放到分离空间（7）中之前，在较厚的液体层中消散。

公开(公告)号：WO1991009680A1

公开(公告)日：1991-07-11

申请号：PCT/DK1990000345

申请日：1990-12-27

Applicant: ALFA-LAVAL SEPARATION A/S ,  MADSEN, Niels, Flemming

Inventor： ALFA-LAVAL SEPARATION A/S

IPC: B04B01/20

CPC classification number: B04B1/20 ,  B04B9/12

Abstract: The decanter centrifuge comprises a drum (1) rotatably journalled in a frame by means of bearings at its ends. The separating compartment of the drum is closed at both ends by means of end walls (4, 5). The drum accommodates a rotatably journalled conveyor (6) with a conveyor body (7) and a screw flight (8). A bearing (10) is located in the end wall (4) at the narrow end of the conveyor (6) and a bearing (11) located at the free end of a trunnion (12) projecting from the end gable (5) into the conveyor body (7) is disposed at the widest end of the conveyor. Due to the short distance between the conveyor bearings (10, 11) the rigidity of the conveyor increases, thereby increasing the first critical RPM of the drum.

Abstract translation: 沉降式离心机包括通过其端部处的轴承可旋转地支撑在框架中的滚筒（1）。 滚筒的分隔室通过端壁（4,5）在两端封闭。 滚筒容纳具有输送机主体（7）和螺旋飞行（8）的可旋转的轴颈输送机（6）。 轴承（10）位于输送机（6）的窄端处的端壁（4）中，以及位于从端部山形物（5）突出的耳轴（12）的自由端的轴承（11） 输送机体（7）设置在输送机的最宽端。 由于输送机轴承（10,11）之间的短距离，输送机的刚度增加，从而增加了滚筒的第一临界转速。

公开(公告)号：WO1987006856A1

公开(公告)日：1987-11-19

申请号：PCT/DK1987000050

申请日：1987-05-05

Applicant: ALFA-LAVAL SEPARATION A/S ,  MADSEN, Niels, Flemming

Inventor： ALFA-LAVAL SEPARATION A/S

IPC: B04B01/20

CPC classification number: B04B1/20 ,  B04B2001/2066

Abstract: The decanter centrifuge (1) comprises a conveyor screw (5) constructed as a hollow body with a lower average density than the lighter liquid phase of the surrounding slurry. The conveyor (5) thus flows in said liquid phase which is utilized in that the one traditional radial bearing of the conveyor is replaced by a radial support bearing (22) which only during starting and stopping of the centrifuge cooperates with the conveyor (5) in order to prevent it from contacting the bowl (2). In operation, the conveyor is thus only supported in the radial direction at the one end, entailing that the flexural rigidity of the conveyor becomes less important to the maximum allowable number of revolutions of the centrifuge which may then be increased for a given centrifuge, thereby obtaining an improved separating effect.

Abstract translation: 沉降式离心机（1）包括构造为中空体的输送螺杆（5），其平均密度低于周围浆料的较轻液相。 输送机（5）因此在所述液相中流动，因为输送机的一个传统的径向轴承被径向支撑轴承（22）代替，只有离心机的起动和停止与输送机（5）配合， 以防止其与碗（2）接触。 在操作中，输送机因此仅在一端沿径向方向支撑，这导致输送机的抗弯刚度对于离心机的最大允许转数不太重要，然后可以在给定的离心机上增加离心机的转速 获得改进的分离效果。

公开(公告)号：WO1989012506A1

公开(公告)日：1989-12-28

申请号：PCT/DK1989000151

申请日：1989-06-19

Applicant: ALFA-LAVAL SEPARATION A/S ,  CEDERKVIST, Jan ,  GODDIK, Bjarne

Inventor： ALFA-LAVAL SEPARATION A/S

IPC: B04B01/20

CPC classification number: B04B9/08 ,  B04B1/2016

Abstract: The decanter centrifuge (1) comprises a bowl (2) and a conveyor screw (7) rotatably journalled in the bowl (2) and a reduction gear (22) providing a relative rotation of the screw relative to the bowl. The gear (22) is journalled separately relative to the bowl in separate bearings (25, 26). The housing and the driven shaft of the gear (22) are by means of flexural but torsionally stiff couplings (28, 29) connected with the bowl (2) and the conveyor (7), resp. Said flexural couplings result in that the gear (22) is dynamically insulated from the bowl (2) and does not influence the critical number of revolutions thereof. As a result of this the number of revolutions of the bowl - and thus the maximum allowable number of revolutions of the entire centrifuge - may be increased, thereby offering substantially improved separating properties of the centrifuge as a whole.

Abstract translation: 沉降式离心机（1）包括可旋转地安装在碗（2）中的碗（2）和输送螺杆（7）和减小齿轮（22），其提供螺杆相对于碗的相对旋转。 齿轮（22）在分离的轴承（25,26）中相对于碗单独地支承。 齿轮（22）的壳体和从动轴通过与碗（2）和输送机（7）连接的弯曲但扭转的刚性联接件（28,29）分别。 所述弯曲联接器导致齿轮（22）与碗（2）动态绝缘，并且不影响其临界转数。 因此，可以提高碗的转数，从而提高整个离心机的最大允许转速，从而提供离心机整体的分离性能显着提高。

公开(公告)号：WO1993020947A1

公开(公告)日：1993-10-28

申请号：PCT/DK1993000124

申请日：1993-04-05

Applicant: ALFA-LAVAL SEPARATION A/S ,  NIELSEN, Helmuth, K. ,  CHRISTENSEN, Mogens

Inventor： ALFA-LAVAL SEPARATION A/S

IPC: B04B09/10

CPC classification number: B04B15/06 ,  B04B1/2016 ,  B04B2001/2025

Abstract: The centrifuge has an electric motor (18) of the squirrel cage type for the rotation of the centrifuge drum (2) during centrifugation and an electric control (20) comprising a frequency converter (21) for the control of the RPM of the electric motor (18). When cleaning the drum (2) a frequency converter (21) is coupled into the normal current supply line (25) to the electric motor (18) by means of two change-over switches (22, 23). The nominal power of the frequency converter corresponds to the power consumption of the electric motor (18) when the centrifuge drum (2) rotates at a speed corresponding to the centrifugal force at the internal side of the drum (2) being 1.2 to 0.8 times the gravitational force.

Abstract translation: 离心机具有用于在离心过程中离心机转鼓（2）旋转的鼠笼型电动机（18）和包括用于控制电动机的RPM的变频器（21）的电控制器（20） （18）。 当清洁滚筒（2）时，变频器（21）通过两个转换开关（22,23）耦合到电动机（18）的正常供电线路（25）中。 变频器的额定功率对应于当离心机鼓（2）以与鼓（2）内侧的离心力相对应的速度旋转的电动机（18）的功率消耗为1.2至0.8倍 重力。

公开(公告)号：WO1984001804A1

公开(公告)日：1984-05-10

申请号：PCT/DK1983000099

申请日：1983-10-26

Applicant: ALFA-LAVAL SEPARATION A/S ,  ANDRESEN, Hans, Bogeskov ,  NIELSEN, Helmut, Kjeld

Inventor： ALFA-LAVAL SEPARATION A/S

IPC: F16H39/16

CPC classification number: F16H39/16 ,  B04B1/2016

Abstract: The transmission comprises a hollow input member (1) and a coaxial output member (2) supported for rotation relative to the input member. A positive displacement pump comprises a cylinder block (12) secured to the input member and a rotor (16) which is journalled on an eccentric pin (17) and which drives the pump pistons (15). A positive displacement motor comprises a stator part (6) secured to the input member and a rotor part (5) secured to the output member. The motor cylinders (8) are supplied with hydraulic liquid from the pump through duct means (35, 37, 39) in a disc-shaped control member (22) journalled on the eccentric pin (17) and rotating together with the pump rotor (16). Return flow from the motor to the pump occurs through a space (28) which within the input member surrounds the control member (22) and which communicates with each pump cylinder (14) during the suction stroke of the associated pump piston (15).

Abstract translation: 变速器包括中空输入构件（1）和支撑成相对于输入构件旋转的同轴输出构件（2）。 正排量泵包括固定到输入构件的气缸体（12）和安装在偏心销（17）上并驱动泵活塞（15）的转子（16）。 正位移电动机包括固定到输入构件的定子部分（6）和固定到输出构件的转子部分（5）。 电动机气缸（8）从泵通过导管装置（35,37,39）供给液压液体，该液压液体被安装在偏心销（17）上并与泵转子一起旋转的盘形控制件（22）中 16）。 从马达到泵的回流通过在输入构件内围绕控制构件（22）并且在相关联的泵活塞（15）的吸入冲程期间与每个泵缸（14）连通的空间（28）发生。