EP0391043A2 - Centrifuge for continuously separating materials of different densities - Google Patents

Centrifuge for continuously separating materials of different densities Download PDF

Info

Publication number
EP0391043A2
EP0391043A2 EP90102760A EP90102760A EP0391043A2 EP 0391043 A2 EP0391043 A2 EP 0391043A2 EP 90102760 A EP90102760 A EP 90102760A EP 90102760 A EP90102760 A EP 90102760A EP 0391043 A2 EP0391043 A2 EP 0391043A2
Authority
EP
European Patent Office
Prior art keywords
centrifuge
drum
centrifuge drum
adjusting device
adjusting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP90102760A
Other languages
German (de)
French (fr)
Other versions
EP0391043A3 (en
Inventor
Reinhold Dr. Schilp
Wolfgang Epper
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kloeckner Humboldt Deutz AG
Original Assignee
Kloeckner Humboldt Deutz AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kloeckner Humboldt Deutz AG filed Critical Kloeckner Humboldt Deutz AG
Publication of EP0391043A2 publication Critical patent/EP0391043A2/en
Publication of EP0391043A3 publication Critical patent/EP0391043A3/en
Ceased legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/20—Centrifuges 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/20—Centrifuges 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
    • B04B2001/2083—Configuration of liquid outlets

Definitions

  • the invention relates to a centrifuge for the continuous separation of substances of different densities, in particular for the separation of solid-liquid mixtures, with an essentially cylindrical drum shell and with nozzles arranged in the thick matter discharge area, through the openings of which the thick matter is discharged, with opening and closing the nozzle openings, adjusting members are provided which interact with an adjusting device arranged outside the centrifuge drum.
  • This known device for opening and closing the nozzles is not only relatively complicated in terms of its construction, but also a repair, in particular the replacement of worn setting elements for new ones, is associated with a relatively high amount of work, time and cost, since this is the centrifuge not only shut down, but also the centrifuge drum in the thick matter discharge area must be opened.
  • the supply of the pressure fluid brings to the adjusting members arranged inside the centrifuge drum, in particular in the Area of the rotary union, sealing problems with it, which are difficult to master.
  • the object of the invention is to considerably simplify the removal of thick matter from the centrifuge, regardless of the speed of the screw conveyor and / or the differential speed between the screw conveyor and the centrifuge drum, while avoiding the disadvantages described above.
  • the setting members for opening and closing the nozzle openings are arranged on the outside of the centrifuge drum and are operatively connected to the adjusting device via mechanical connecting elements.
  • the fact that the adjusting elements for opening and closing the nozzle openings on the outside of the centrifuge drum are not only considerably easier to maintain and check the function of the adjusting elements, but it is also considerably easier to replace worn adjusting elements with new ones, since the centrifuge drum is not removed and must be opened.
  • the setting members are not operatively connected to the adjusting device via mechanical connecting elements.
  • the adjusting member consists of an annular disk which is axially displaceably arranged on the drive shaft of the centrifuge drum and which rotates with the centrifuge drum and which is in operative connection with a displacing device arranged on the bearing housing of the centrifuge.
  • This adjusting member which is axially displaceably arranged on the drive shaft of the centrifuge drum, is particularly characterized by its simple design and high operational reliability.
  • the centrifuge drum (1) of the solid-bowl screw centrifuge in the thick matter discharge area (2) is provided with an annular disc (4) which can be axially displaced on the drive shaft (3) of the centrifuge drum and which, during operation of the centrifuge, is equipped with the centrifuge drum ( 1) rotates.
  • the annular disc (4) is operatively connected via a sliding bearing (5) to an adjusting device (6) which is arranged on the bearing housing (7), in which the drive shaft (3) of the centrifuge drum (1) and in it the screw conveyor (8 ) is rotatably mounted.
  • the adjusting device (6) can be designed as a double-acting hydraulic piston-cylinder unit, the piston rod (9) of which is connected at the outer end to a plate-shaped member (10) which engages the outer bearing ring of the sliding bearing (5).
  • the adjusting device (6) can, however, also very advantageously be designed as an electric motor with a screw spindle arranged on the rotor, which engages in a corresponding adjusting thread in the link (10) - for the purpose of axially adjusting the annular disc (4) (arrow 11).
  • the outer edge (12) of the The annular disc (4) forms with the end wall (13) of the centrifuge drum (1) an annular gap (14) through which the thick material (15) separated from the liquid in the centrifuge drum during operation exits in the direction of the arrow (16).
  • the annular gap (14) can be adjusted continuously with the help of the washer (4), which serves as an adjusting element for opening and closing the annular nozzle openings, by axially shifting its width into the position (17) shown in dashed lines in FIG. 2.
  • the axially displaceable annular disc (4) for controlling the exit annular gap (14) for the thick matter (15) can be kept regulated in a certain gap width position as required, or can be opened or closed continuously via a time pulse control.
  • the adjusting member shown in Fig. 3 consists of one or more bolts (18) with a beveled end face (19) which the opening (20) in the end wall (21) arranged Releases or closes nozzles (22) for the discharge of the thick matter (23) from the centrifuge drum (24).
  • the bolt (18) which serves as an adjusting and closing member, is detachably connected to an annular arm (25) which, as a mechanical connecting element with the adjusting device on the drive shaft of the centrifuge drum, is axially adjustable (arrow 26) and radially arranged.
  • the adjusting device to which the ring arm (25) carrying the bolt (18) is connected corresponds to the adjusting device (5, 6, 9, 10) shown in FIG. 1 and was therefore not shown in detail in FIG. 3.
  • the adjusting member (27) which is also releasably connected to an arm (28) which is axially adjustable on the drive shaft of the centrifuge drum and is detachably connected radially outwards, is conical.
  • the opening (31) of the nozzle (32) arranged in the end wall (29) of the centrifuge drum (30) is also opened and closed in the same way as in the thick matter discharge device shown in FIG. 3.
  • the nozzles (33) in the drum jacket (34) are arranged distributed uniformly over the circumference and are designed to be plate-shaped for opening and closing the nozzle openings (35) te adjusting members (36) are provided which are fastened in a ring (37) surrounding the drum.
  • Push rods (38) engage on the ring (37), which in turn are firmly connected to arms (39) which are axially adjustable on the drive shaft of the centrifuge drum (34) and extend radially outwards.
  • the setting members designed according to the invention and which are operatively connected to the adjusting device very advantageously enable an accurate, optimal and stepless setting of the thick material discharge openings depending on the concentration of the thick material thickened in the centrifuge.

Landscapes

  • Centrifugal Separators (AREA)

Abstract

In known centrifuges for continuously separating materials of different densities, nozzles for the discharge of the dense material are arranged on the drum shell in the discharge area of the dense material, which nozzles are operatively connected to an adjusting device located outside the centrifuge drum by adjusting members arranged inside the centrifuge drum. The nozzle openings are here opened and closed by means of hydraulic pressure-fluid media. This is not only complicated and costly but also problematic with regard to the sealing of the pressure fluid. In addition, the adjusting members arranged inside the centrifuge drum are not accessible from outside and are therefore also difficult to service and exchange. These disadvantages are removed according to the invention in a particularly simple manner by the adjusting members (4) for opening and closing the nozzle openings (14) being arranged on the outside on the centrifuge drum (1) and by being in operative connection with the adjusting device (6, 9) via mechanical connecting elements (5, 10). …<IMAGE>…

Description

Die Erfindung bezieht sich auf eine Zentrifuge zum kontinuierlichen Trennen von Stoffen unter­schiedlicher Dichte, insbesondere zum Trennen von Feststoff-Flüssigkeitsgemischen, mit im wesentlichen zylindrisch ausgebildetem Trommel­mantel und mit im Dickstoffaustragsbereich an­geordneten Düsen, durch deren Öffnungen der Dickstoff ausgetragen wird, wobei zum Öffnen und Schließen der Düsenöffnungen Einstellorgane vorgesehen sind, die mit einer außerhalb der Zentrifugentrommel angeordneten Verstellein­richtung zusammenwirken.The invention relates to a centrifuge for the continuous separation of substances of different densities, in particular for the separation of solid-liquid mixtures, with an essentially cylindrical drum shell and with nozzles arranged in the thick matter discharge area, through the openings of which the thick matter is discharged, with opening and closing the nozzle openings, adjusting members are provided which interact with an adjusting device arranged outside the centrifuge drum.

Aus der deutschen Offenlegungsschrift 36 20 912 ist eine Zentrifuge zum kontinuierlichen Tren­nen von Stoffen unterschiedlicher Dichte obiger Bauart bekannt, bei der die Einstellorgane, die das Öffnen und Schließen der Düsen bewerkstel­ligen,innerhalb der Zentrifugentrommel angord­net sind. Als Verstellmedien sind hierbei fer­ner Kolben-Zylindereinheiten vorgesehen, an die in der Stirnwand und in der Antriebswelle der Zentrifugentrommel angeordnete nach außen führende, als Druckflüssigkeitsleitungen die­nende Bohrungen angeschlossen sind, die von außen mit Druckflüssigkeit beschickt werden. Diese bekannte Vorrichtung zum Öffnen und Schließen der Düsen ist im konstruktiven Aufbau nicht nur verhältnismäßig kompliziert, sondern auch eine Reparatur, insbesondere das Auswech­seln von verschlissenen Einstellorganen gegen neue, ist mit einem verhältnismäßig hohen Ar­beits-, Zeit- und Kostenaufwand verbunden, da hierfür die Zentrifuge nicht nur stillgesetzt, sondern auch die Zentrifugentrommel im Dick­stoffaustragbereich geöffnet werden muß. Dar­über hinaus bringt die Zufuhr der Druckflüssig­keit zu den innerhalb der Zentrifugentrommel angeordneten Einstellorganen, insbesondere im Bereich der Drehdurchführung, Dichtprobleme mit sich, die nur schwierig zu beherrschen sind.From German Offenlegungsschrift 36 20 912 a centrifuge for the continuous separation of substances of different densities of the above type is known, in which the setting elements, which manage the opening and closing of the nozzles, are arranged within the centrifuge drum. Piston-cylinder units are also provided as adjustment media, to which are connected bores which are arranged in the end wall and in the drive shaft of the centrifuge drum and serve as hydraulic fluid lines and which are filled with hydraulic fluid from the outside. This known device for opening and closing the nozzles is not only relatively complicated in terms of its construction, but also a repair, in particular the replacement of worn setting elements for new ones, is associated with a relatively high amount of work, time and cost, since this is the centrifuge not only shut down, but also the centrifuge drum in the thick matter discharge area must be opened. In addition, the supply of the pressure fluid brings to the adjusting members arranged inside the centrifuge drum, in particular in the Area of the rotary union, sealing problems with it, which are difficult to master.

Die Aufgabe der Erfindung besteht darin, unter Vermeidung der vorhin geschilderten Nachteile den Dickstoffaustrag aus der Zentrifuge unab­hängig von der Drehzahl der Förderschnecke und/­oder der Differenzdrehzahl zwischen Förder­schnecke und Zentrifugentrommel erheblich zu vereinfachen.The object of the invention is to considerably simplify the removal of thick matter from the centrifuge, regardless of the speed of the screw conveyor and / or the differential speed between the screw conveyor and the centrifuge drum, while avoiding the disadvantages described above.

Diese Aufgabe wird dadurch gelöst, daß die Ein­stellorgane zum Öffnen und Schließen der Düsen­öffnungen außen an der Zentrifugentrommel ange­ordnet sind und über mechanische Verbindungs­elemente mit der Verstelleinrichtung in Wirk­verbindung stehen. Dadurch, daß die Einstellor­gane zum Öffnen und Schließen der Düsenöffnun­gen außen an der Zentrifugentrommel angeordnet sind, werden nicht nur Wartung und Funktions­kontrolle der Einstellorgane erheblich erleich­tert, sondern es wird auch das Auswechseln von verschlissenen Einstellorganen gegen neue wesentlich vereinfacht, da hierfür die Zentri­fugentrommel nicht ausgebaut und geöffnet wer­den muß. Ferner treten dadurch, daß gemäß der Erfindung die Einstellorgane über mechanische Verbindungselemente mit der Verstelleinrichtung in Wirkverbindung stehen keinerlei Dichtungs­probleme auf. Auch entfallen hierdurch im Ver­gleich zu bekannten Zentrifugen ähnlicher Bau­ art komplizierte und kostspielige Bohrungen in der Antriebswelle und in der Stirnwand der Zen­trifugentrommel für die Druckflüssigkeitszufuhr zur Betätigung der Einstellorgane, was zu einer erheblichen Verringung der Herstellungs- und Wartungskosten der Dickstoffaustragsvorrichtung führt.This object is achieved in that the setting members for opening and closing the nozzle openings are arranged on the outside of the centrifuge drum and are operatively connected to the adjusting device via mechanical connecting elements. The fact that the adjusting elements for opening and closing the nozzle openings on the outside of the centrifuge drum are not only considerably easier to maintain and check the function of the adjusting elements, but it is also considerably easier to replace worn adjusting elements with new ones, since the centrifuge drum is not removed and must be opened. Furthermore, due to the fact that, according to the invention, the setting members are not operatively connected to the adjusting device via mechanical connecting elements. This also eliminates the need for a similar construction compared to known centrifuges Art complicated and expensive holes in the drive shaft and in the end wall of the centrifuge drum for the pressure fluid supply for actuating the adjusting elements, which leads to a considerable reduction in the manufacturing and maintenance costs of the thick matter discharge device.

Gemäß einer weiteren vorteilhaften Ausgestal­tung der Erfindung besteht das Einstellorgan aus einer auf der Antriebswelle der Zentrifu­gentrommel axial verschiebbar angeordneten, mit der Zentrifugentrommel umlaufenden Ringscheibe, die mit einer auf dem Lagergehäuse der Zentri­fuge angeordneten Verschiebeeinrichtung in Wirkverbindung steht. Dieses auf der Antriebs­welle der Zentrifugentrommel axial verschiebbar angeordnete Einstellorgan zeichnet sich beson­ders durch seine einfache Ausgestaltung und hohe Betriebssicherheit aus.According to a further advantageous embodiment of the invention, the adjusting member consists of an annular disk which is axially displaceably arranged on the drive shaft of the centrifuge drum and which rotates with the centrifuge drum and which is in operative connection with a displacing device arranged on the bearing housing of the centrifuge. This adjusting member, which is axially displaceably arranged on the drive shaft of the centrifuge drum, is particularly characterized by its simple design and high operational reliability.

Weitere Einzelheiten, Merkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Erläuterung von in Zeichnungen schematisch dar­gestellten Ausführungsbeispielen.Further details, features and advantages of the invention result from the following explanation of exemplary embodiments shown schematically in the drawings.

Es zeigen:

  • Fig. 1 eine Vollmantel-Schneckenzentrifuge mit im Dickstoffaustragsbereich angeordnetem Einstellorgan und Verschiebeeinrichtung gemäß der Erfindung im Teillängsschnitt;
  • Fig. 2 Einstellorgan und Verschiebeeinrichtung im Teillängsschnitt gemäß Fig. 1 im ver­größerten Maßstab;
  • Figuren 3, 4 + 5 weitere Ausgestaltungen der Düsenein­stellorgane gemäß der Erfindung im Teil­längsschnitt und in vergrößertem Maßstab.
Show it:
  • Figure 1 is a solid bowl screw centrifuge with arranged in the thick material discharge area adjusting member and displacement device according to the invention in partial longitudinal section.
  • Fig. 2 adjusting member and displacement device in partial longitudinal section of Figure 1 on an enlarged scale.
  • Figures 3, 4 + 5 further configurations of the nozzle adjusting members according to the invention in partial longitudinal section and on an enlarged scale.

Wie die Figuren 1 und 2 zeigen, ist die Zentri­fugentrommel (1) der Vollmantel-Schneckenzentri­fuge im Dickstoffaustragsbereich (2) mit einer auf der Antriebswelle (3) der Zentrifugentrommel axial verschiebbaren Ringscheibe (4) versehen, die im Betrieb der Zentrifuge mit der Zentrifu­gentrommel (1) umläuft. Die Ringscheibe (4) steht über ein Verschiebelager (5) mit einer Verstelleinrichtung (6) in Wirkverbindung, die auf dem Lagergehäuse (7) angeordnet ist, in dem die Antriebswelle (3) der Zentrifugentrommel (1) und in ihr die Förderschnecke (8) drehbeweglich gelagert ist. Die Verstelleinrichtung (6) kann hierbei als doppeltwirkende hydraulische Kolben-­Zylindereinheit ausgebildet sein, dessen Kolben­stange (9) am äußeren Ende mit einem plattenför­migen Glied (10) verbunden ist, das am äußeren Lagerring des Verschiebelagers (5) angreift. Die Verstelleinrichtung (6) kann aber auch sehr vor­teilhaft als Elektromotor mit am Rotor angeord­neten Schraubenspindel ausgebildet sein, die in ein entsprechendes Stellgewinde im Glied (10) - zwecks axialer Verstellung der Ringscheibe (4) (Pfeil 11) - eingreift. Der Außenrand (12) der Ringscheibe (4) bildet mit der Stirnwandung (13) der Zentrifugentrommel (1) einen Ringspalt (14), durch den der im Betrieb der Zentrifuge in der Zentrifugentrommel von der Flüssigkeit getrennte Dickstoff (15) in Pfeilrichtung (16) austritt. Der Ringspalt (14) kann hierbei mit Hilfe der Ringscheibe (4) die als Einstellorgan zum Öffnen und Schließen der ringförmigen Düsenöffnungen dient durch axiales Verschieben in seiner Weite bis in die in der Fig. 2 ge­strichelt dargestellte Lage (17) stufenlos ver­stellt werden. Dies ermöglicht eine optimale Steuerung des Dickstoffaustrages aus der Zen­trifugentrommel, und zwar nicht nur in Abhän­gigkeit der der Zentrifuge zugeführten Fest­stoff- und/oder Dickstoffkonzentration, sondern hierdurch kann auch in besonders einfacher Weise - unabhängig vom Betriebszustand der Zen­trifuge - Einfluß auf den jeweils gewünschten Schlammeindikkungsgrad von außen her genommen werden. Die axial verschiebbare Ringscheibe (4) zum Steuern des Austrittsringspaltes (14) für den Dickstoff (15) kann je nach Bedarf sowohl in einer bestimmten Spaltweitenposition gere­gelt gehalten, oder aber über eine Zeitimpuls-­Steuerung stufenlos geöffnet oder geschlossen werden.As FIGS. 1 and 2 show, the centrifuge drum (1) of the solid-bowl screw centrifuge in the thick matter discharge area (2) is provided with an annular disc (4) which can be axially displaced on the drive shaft (3) of the centrifuge drum and which, during operation of the centrifuge, is equipped with the centrifuge drum ( 1) rotates. The annular disc (4) is operatively connected via a sliding bearing (5) to an adjusting device (6) which is arranged on the bearing housing (7), in which the drive shaft (3) of the centrifuge drum (1) and in it the screw conveyor (8 ) is rotatably mounted. The adjusting device (6) can be designed as a double-acting hydraulic piston-cylinder unit, the piston rod (9) of which is connected at the outer end to a plate-shaped member (10) which engages the outer bearing ring of the sliding bearing (5). The adjusting device (6) can, however, also very advantageously be designed as an electric motor with a screw spindle arranged on the rotor, which engages in a corresponding adjusting thread in the link (10) - for the purpose of axially adjusting the annular disc (4) (arrow 11). The outer edge (12) of the The annular disc (4) forms with the end wall (13) of the centrifuge drum (1) an annular gap (14) through which the thick material (15) separated from the liquid in the centrifuge drum during operation exits in the direction of the arrow (16). The annular gap (14) can be adjusted continuously with the help of the washer (4), which serves as an adjusting element for opening and closing the annular nozzle openings, by axially shifting its width into the position (17) shown in dashed lines in FIG. 2. This enables optimal control of the thick matter discharge from the centrifuge drum, not only depending on the solids and / or thick matter concentration supplied to the centrifuge, but can also influence the desired degree of sludge thinning in a particularly simple manner - regardless of the operating state of the centrifuge be taken outside. The axially displaceable annular disc (4) for controlling the exit annular gap (14) for the thick matter (15) can be kept regulated in a certain gap width position as required, or can be opened or closed continuously via a time pulse control.

Das in Fig. 3 dargestellte Einstellorgan be­steht aus einem oder mehreren Bolzen (18) mit abgeschrägter Stirnfläche (19), die die Öffnung (20) der in der Stirnwandung (21) angeordneten Düsen (22) für den Austrag des Dickstoffs (23) aus der Zentrifugentrommel (24) freigibt oder schließt. Der hierbei als Einstell- und Ver­schließorgan dienende Bolzen (18) ist mit einem Ringarm (25) lösbar verbunden, der als mechani­sches Verbindungselement mit der Verstellein­richtung auf der Antriebswelle der Zentrifugen­trommel axial verstellbar (Pfeil 26) und radial verlaufend angeordnet ist. Die Verstelleinrich­tung, an die der Bolzen (18) tragende Ringarm (25) angeschlossen ist, entspricht der in Fig. 1 dargestellten Verstelleinrichtung (5, 6, 9, 10) und wurde daher in Fig. 3 nicht näher dar­gestellt.The adjusting member shown in Fig. 3 consists of one or more bolts (18) with a beveled end face (19) which the opening (20) in the end wall (21) arranged Releases or closes nozzles (22) for the discharge of the thick matter (23) from the centrifuge drum (24). The bolt (18), which serves as an adjusting and closing member, is detachably connected to an annular arm (25) which, as a mechanical connecting element with the adjusting device on the drive shaft of the centrifuge drum, is axially adjustable (arrow 26) and radially arranged. The adjusting device to which the ring arm (25) carrying the bolt (18) is connected corresponds to the adjusting device (5, 6, 9, 10) shown in FIG. 1 and was therefore not shown in detail in FIG. 3.

Bei dem in Fig. 4 dargestellten Ausführungsbei­spiel ist das Einstellorgan (27), welches eben­falls mit einem auf der Antriebswelle der Zen­trifugentrommel axial verstellbar und radial nach außen verlaufendem Arm (28) lösbar verbun­den ist, kegelförmig ausgebildet. Das Öffnen und Schließen der in der Stirnwandung (29) der Zentrifugentrommel (30) angeordneten Öffnung (31) der Düse (32) erfolgt auch hierbei in gleicher Weise wie bei der in Fig. 3 darge­stellten Dickstoffaustragsvorrichtung.In the exemplary embodiment shown in FIG. 4, the adjusting member (27), which is also releasably connected to an arm (28) which is axially adjustable on the drive shaft of the centrifuge drum and is detachably connected radially outwards, is conical. The opening (31) of the nozzle (32) arranged in the end wall (29) of the centrifuge drum (30) is also opened and closed in the same way as in the thick matter discharge device shown in FIG. 3.

Gemäß Fig. 5 sind die Düsen (33) im Trommelman­tel (34) gleichmäßig über den Umfang verteilt angeordnet und zum Öffnen und Schließen der Düsenöffnungen (35) plattenförmig ausgebildete­ te Einstellorgane (36) vorgesehen, die in einem, die Trommel umschließenden Ring (37) be­festigt sind. An den Ring (37) greifen Schie­berstangen (38) an, die ihrerseits mit auf der Antriebswelle der Zentrifugentrommel (34) axial verstellbar und radial nach außen verlaufenden Armen (39) fest verbunden sind.5, the nozzles (33) in the drum jacket (34) are arranged distributed uniformly over the circumference and are designed to be plate-shaped for opening and closing the nozzle openings (35) te adjusting members (36) are provided which are fastened in a ring (37) surrounding the drum. Push rods (38) engage on the ring (37), which in turn are firmly connected to arms (39) which are axially adjustable on the drive shaft of the centrifuge drum (34) and extend radially outwards.

Alle diese in den Zeichnungsfiguren dargestell­ten erfindungsgemäß ausgebildeten, außen an der Zentrifugentrommel angeordneten und über mecha­nische Verbindungselemente mit der Verstellein­richtung in Wirkverbindung stehenden Einstell­organe zum Öffnen und Schließen der Düsenöff­nungen, zeichnen sich besonders dadurch aus, daß sie in ihrem konstruktiven Aufbau sehr ein­fach ausgebildet, stets betriebssicher und jederzeit sehr leicht von außen zugängig sind, und daß sie im Bedarfsfall schnell ausgewech­selt werden können. Ein weiterer und ganz besonderer Vorteil der außen an der Zentrifuge angeordneten Einstellorgane gemäß der Erfindung besteht darin, daß Verstopfungen der Düsen hierdurch mit Sicherheit vermieden werden. Dar­über hinaus besteht aber auch die Möglichkeit einer mechanischen Verbindung, insbesondere von bereits bestehenden innerhalb der Zentrifugen­trommel angeordneten Einstellorganen mit der außerhalb der Trommel befindlichen Verstellein­richtung, und zwar über einfache Gestänge und Winkelhebel, die vorzugsweise an der Stirnwand der Trommel angeordnet werden. Im übrigen er­möglichen die erfindungsgemäß ausgebildeten, der Verstelleinrichtung in Wirkverbindung ste­henden Einstellorgane sehr vorteilhaft eine genaue, optimale und stufenlose Einstellung der Dickstoff-Austragsöffnungen in Abhängigkeit der Konzentration des in der Zentrifuge eingedick­ten Dickstoffes.All of these setting elements according to the invention, shown in the drawing, which are arranged on the outside of the centrifuge drum and are operatively connected to the adjusting device via mechanical connecting elements for opening and closing the nozzle openings, are particularly distinguished by the fact that their design is very simple, always reliable and are easily accessible from the outside at all times, and that they can be quickly replaced if necessary. A further and very special advantage of the setting members arranged on the outside of the centrifuge according to the invention is that blockages of the nozzles are thereby avoided with certainty. In addition, however, there is also the possibility of a mechanical connection, in particular of already existing adjusting members arranged inside the centrifuge drum, with the adjusting device located outside the drum, namely via simple linkages and angle levers, which are preferably on the front wall be arranged in the drum. Moreover, the setting members designed according to the invention and which are operatively connected to the adjusting device very advantageously enable an accurate, optimal and stepless setting of the thick material discharge openings depending on the concentration of the thick material thickened in the centrifuge.

Claims (5)

1. Zentrifuge zum kontinuierlichen Trennen von Stoffen unterschiedlicher Dichte, insbeson­dere zum Trennen von Feststoff-Flüssig­keitsgemischen, mit im wesentlichen zylin­drisch ausgebildetem Trommelmantel und mit im Dickstoffaustragsbereich angeordneten Düsen, durch deren Öffnungen der Dickstoff ausgetragen wird, wobei zum Öffnen und Schließen der Düsenöffnungen Einstellorgane vorgesehen sind, die mit einer außerhalb der Zentrifugentrommel angeordneten Ver­stelleinrichtung zusammenwirken, dadurch gekennzeichnet, daß die Einstellorgane (4, 18, 27, 36) zum Öffnen und Schließen der Düsenöffnungen (14, 20, 31, 35) außen an der Zentrifugentrommel (1, 24, 30, 34) an­geordnet sind und über mechanische Verbin­dungselemente (5, 10, 25, 28, 39) mit der Verstelleinrichtung (6, 9, 10) in Wirkver­bindung stehen.1. Centrifuge for the continuous separation of substances of different densities, in particular for the separation of solid-liquid mixtures, with an essentially cylindrical drum shell and with nozzles arranged in the thick substance discharge area, through the openings of which the thick substance is discharged, setting elements being provided for opening and closing the nozzle openings which cooperate with an adjusting device arranged outside the centrifuge drum, characterized in that the setting members (4, 18, 27, 36) for opening and closing the nozzle openings (14, 20, 31, 35) on the outside of the centrifuge drum (1, 24, 30, 34) are arranged and are operatively connected to the adjusting device (6, 9, 10) via mechanical connecting elements (5, 10, 25, 28, 39). 2. Zentrifuge nach Anspruch 1, dadurch gekenn­zeichnet, daß das Verstellorgan aus einer auf der Antriebswelle (3) der Zentrifugen­trommel (1) axial verschiebbar angeordne­ten, mit der Zentrifugentrommel (1) umlau­fenden Ringscheibe (4) besteht, die mit einer auf dem Lagergehäuse (7) der Zentri­fuge angeordneten Verstelleinrichtung (6, 9, 10) in Wirkverbindung steht.2. Centrifuge according to claim 1, characterized in that the adjusting member consists of an axially displaceably arranged on the drive shaft (3) of the centrifuge drum (1), with the centrifuge drum (1) rotating ring disk (4), which with a on the bearing housing ( 7) the centrifuge arranged adjusting device (6, 9, 10) is in operative connection. 3. Zentrifuge nach Anspruch 1, dadurch gekenn­zeichnet, daß das mechanische Verbindungs­element aus einem auf der Antriebswelle der Zentrifugentrommel (24, 30, 34) axial ver­stellbar angeordneten, radial nach außen verlaufenden Arm (25, 28, 39) besteht.3. Centrifuge according to claim 1, characterized in that the mechanical connecting element consists of an axially adjustable, radially outwardly extending arm (25, 28, 39) on the drive shaft of the centrifuge drum (24, 30, 34). 4. Zentrifuge nach einem der vorhergehenden Ansprüche, insbesondere nach Anspruch 1, dadurch gekennzeichnet, daß das Einstellor­gan (4, 27, 36) scheibenförmig, kegelförmig oder plattenförmig ausgebildet ist.4. Centrifuge according to one of the preceding claims, in particular according to claim 1, characterized in that the adjusting member (4, 27, 36) is disc-shaped, conical or plate-shaped. 5. Zentrifuge nach einem der vorhergehenden Ansprüche, gekennzeichnet durch eine mecha­nisch oder hydraulisch wirkende Verstell­einrichtung (6, 9, 10).5. Centrifuge according to one of the preceding claims, characterized by a mechanically or hydraulically acting adjusting device (6, 9, 10).
EP19900102760 1989-04-07 1990-02-13 Centrifuge for continuously separating materials of different densities Ceased EP0391043A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3911320 1989-04-07
DE3911320A DE3911320A1 (en) 1989-04-07 1989-04-07 CENTRIFUGE FOR CONTINUOUS SEPARATION OF SUBSTANCES OF DIFFERENT DENSITY

Publications (2)

Publication Number Publication Date
EP0391043A2 true EP0391043A2 (en) 1990-10-10
EP0391043A3 EP0391043A3 (en) 1991-04-10

Family

ID=6378101

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900102760 Ceased EP0391043A3 (en) 1989-04-07 1990-02-13 Centrifuge for continuously separating materials of different densities

Country Status (3)

Country Link
US (1) US5169377A (en)
EP (1) EP0391043A3 (en)
DE (1) DE3911320A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5217428A (en) * 1989-06-29 1993-06-08 Kloeckner-Humboldt-Deutz Aktiengesellschaft Weir for setting the liquid level in solid bowl centrifuges
WO1995000249A1 (en) * 1993-06-18 1995-01-05 Westfalia Separator Aktiengesellschaft Weir for a solid-jacket centrifuge drum

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4112957A1 (en) * 1991-04-20 1992-10-22 Kloeckner Humboldt Deutz Ag FULL-COVERED SNAIL CENTRIFUGE
US5261869A (en) * 1992-04-06 1993-11-16 Alfa Laval Separation, Inc. Decanter centrifuge having discontinuous flights in the beach area
US5695442A (en) * 1995-06-06 1997-12-09 Baker Hughes Incorporated Decanter centrifuge and associated method for producing cake with reduced moisture content and high throughput
US5643169A (en) * 1995-06-06 1997-07-01 Baker Hughes Incorporated Decanter centrifuge with adjustable gate control
US5653674A (en) * 1996-03-27 1997-08-05 Baker Hughes Incorporated Decanter centrifuge with discharge opening adjustment control and associated method of operating
JP4153138B2 (en) * 2000-02-10 2008-09-17 株式会社クボタ Centrifuge
DE10203652B4 (en) * 2002-01-30 2006-10-19 Westfalia Separator Ag Solid bowl centrifuge with a weir
DE10261520A1 (en) * 2002-12-23 2004-07-08 Westfalia Separator Ag Solid bowl screw centrifuge with adjustable solids discharge
DE102006030477A1 (en) * 2006-03-30 2007-10-04 Westfalia Separator Ag Full metal helical conveyor centrifuge, has ring assigned to opening as closure device and displaceable using actuating device in position to open opening and in another position to close opening, where actuating device is assigned to ring
US7908764B1 (en) 2008-05-05 2011-03-22 Decanter Machines, Inc. Hyperbaric centrifuge system
US8579783B2 (en) * 2009-07-02 2013-11-12 Andritz S.A.S. Weir and choke plate for solid bowl centrifuge
DK2918345T3 (en) * 2014-03-14 2020-03-16 Andritz Sas decanter centrifuge

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2008778A1 (en) * 1968-05-17 1970-01-23 Garbaty Rudolf
JPS56152754A (en) * 1980-04-25 1981-11-26 Kobe Steel Ltd Decanter type centrifugal separator
JPS57194061A (en) * 1981-05-26 1982-11-29 Kobe Steel Ltd Centrifugal concentrating device

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3092338A (en) * 1959-04-16 1963-06-04 Defibrator Ab Pulp refining apparatus
US3233535A (en) * 1962-12-27 1966-02-08 Havajava Mfg Company Centrifugal coffee brewer
SE315569B (en) * 1967-11-10 1969-10-06 T Glowacki
SE371110B (en) * 1973-03-22 1974-11-11 Alfa Laval Ab
DE2333122C2 (en) * 1973-06-29 1985-08-01 Salzgitter Maschinen Und Anlagen Ag, 3320 Salzgitter Device for actuating a closure body of a centrifuge
CH591286A5 (en) * 1975-04-22 1977-09-15 Escher Wyss Ag
ZA781002B (en) * 1977-03-03 1979-09-26 Joy Mfg Co Centrifuge apparatus
US4468215A (en) * 1981-06-19 1984-08-28 Otto Wimmer Centrifuge
SE8405015D0 (en) * 1984-10-08 1984-10-08 Alfa Laval Separation Ab centrifugal
ATE66392T1 (en) * 1985-09-16 1991-09-15 Mueller Drm Ag KLAER FILTER CENTRIFUGE AND METHOD OF SEPARATING SUSPENSIONS.
DE3608664A1 (en) * 1986-03-14 1987-09-17 Krauss Maffei Ag FULL-COAT CENTRIFUGE
DE3620912A1 (en) * 1986-06-21 1987-12-23 Kloeckner Humboldt Deutz Ag Centrifuge with continuous separation of materials of different density
DE3822983A1 (en) * 1988-07-07 1990-01-11 Hiller Gmbh Solid-bowl worm centrifuge

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2008778A1 (en) * 1968-05-17 1970-01-23 Garbaty Rudolf
JPS56152754A (en) * 1980-04-25 1981-11-26 Kobe Steel Ltd Decanter type centrifugal separator
JPS57194061A (en) * 1981-05-26 1982-11-29 Kobe Steel Ltd Centrifugal concentrating device

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 6, no. 35 (C-93)(913) 03 März 1982, & JP-A-56 152754 (KOBE SEIKOSHO K.K.) 26 November 1981, *
PATENT ABSTRACTS OF JAPAN vol. 7, no. 43 (C-152)(1188) 19 Februar 1983, & JP-A-57 194061 (KOBE SEIKOSHO K.K.) 29 November 1982, *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5217428A (en) * 1989-06-29 1993-06-08 Kloeckner-Humboldt-Deutz Aktiengesellschaft Weir for setting the liquid level in solid bowl centrifuges
GB2233258B (en) * 1989-06-29 1993-10-06 Kloeckner Humboldt Deutz Ag Solid sleeve centrifuge with adjustable liquid outlets
WO1995000249A1 (en) * 1993-06-18 1995-01-05 Westfalia Separator Aktiengesellschaft Weir for a solid-jacket centrifuge drum
US5593377A (en) * 1993-06-18 1997-01-14 Westfalia Separator Aktiengesellschaft Weir and choke plate for a solid-jacket centrifuge drum

Also Published As

Publication number Publication date
US5169377A (en) 1992-12-08
EP0391043A3 (en) 1991-04-10
DE3911320A1 (en) 1990-10-11

Similar Documents

Publication Publication Date Title
EP0391043A2 (en) Centrifuge for continuously separating materials of different densities
DE3921327A1 (en) WEIR FOR ADJUSTING THE LIQUID LEVEL IN FULL-COAT CENTRIFUGES
DE3027020A1 (en) FULL-COVERED CENTRIFUGE FOR SUBSTITUTE EXCHANGE BETWEEN LIQUIDS
DE2103829A1 (en) centrifuge
DE3318793A1 (en) DEVICE FOR DEHUMIDIFYING SLUDGE
DE2709894A1 (en) FILTER CENTRIFUGE
EP0322516A2 (en) Solid bowl centrifuge
EP0058656B1 (en) Filtration device for the separation of solid and floating particles from liquids
DE3874943T2 (en) DECANTER CENTRIFUGE WITH PNEUMATIC EMPTYING DEVICE.
DE4115347C2 (en) Solid bowl screw centrifuge for classifying a solid-liquid mixture
EP1585599B1 (en) Solid bowl helical conveyor centrifuge comprising an adjustable outlet for solids
EP0710504B1 (en) Pusher centrifuge
DE4337618C1 (en) Inverted filter centrifuge (seal for drum space)
DE3620912A1 (en) Centrifuge with continuous separation of materials of different density
EP0504836A1 (en) Agitator mill
DE4119003A1 (en) Screw centrifuge for solid-liq. sepn. - has heavy phase passage gap cross=section adjustable in centrifuge operation of barrage element, used for varying consistency and yield
DE4005755A1 (en) FULL-COVERED SNAIL CENTRIFUGE
WO2019170586A1 (en) Solid-bowl decanting centrifuge
DE3520134C2 (en) Inverting filter centrifuge
CH687238A5 (en) Agitator mill.
DE1532689A1 (en) centrifuge
EP0355285A2 (en) Suspension separator
WO2022090370A1 (en) Separator
EP0167653B1 (en) Valve for the lid of a decanter centrifuge
DE2637968A1 (en) Decanting centrifuge with rotating housing - has screw conveyor inside rotating at different speed and fluid outlet tubes on housing wall

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE DK ES GB SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE DK ES GB SE

17P Request for examination filed

Effective date: 19911010

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: KLOECKNER-HUMBOLDT-DEUTZ AG

17Q First examination report despatched

Effective date: 19921109

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 19940908