EP2026909B1 - Centrifuge, in particular separator, having a feed line for control fluid - Google Patents

Centrifuge, in particular separator, having a feed line for control fluid Download PDF

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Publication number
EP2026909B1
EP2026909B1 EP07730080.4A EP07730080A EP2026909B1 EP 2026909 B1 EP2026909 B1 EP 2026909B1 EP 07730080 A EP07730080 A EP 07730080A EP 2026909 B1 EP2026909 B1 EP 2026909B1
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Prior art keywords
centrifuge
separator
drive spindle
control fluid
drum
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German (de)
French (fr)
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EP2026909A1 (en
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Johannes Droste
Norbert Wegener
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GEA Mechanical Equipment GmbH
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GEA Mechanical Equipment GmbH
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    • 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
    • B04B1/10—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with discharging outlets in the plane of the maximum diameter of the bowl
    • B04B1/14—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with discharging outlets in the plane of the maximum diameter of the bowl with periodical discharge

Definitions

  • the invention relates to a centrifuge, in particular a separator, according to the preamble of claim 1.
  • separators suitable for industrial use are known per se from the prior art.
  • separators for discharging solids comprise a hydraulic system which has a closure element which can be actuated by means of control fluid and which is generally designed as a piston slide.
  • FIG. 2 shows the lower portion of a self-draining separator drum having a hydraulic system with which it is possible to perform controlled partial discharges of the centrifugal drum.
  • the hydraulic system comprises a supply line for closing fluid (below) and valve control fluid (above) as control fluid, which can be conducted in closing chambers a, b.
  • a liquid ring exerts a force on the spool, which presses it up into a position in which it closes the Feststoffaustragsö Maschinenen. If an emptying of the drum to be made, the valve c is opened by opening fluid.
  • control fluid is supplied by control fluid supply lines which extend relatively close to the spindle parallel to this vertically upwards into the drum inside which they inject the control fluid radially outwards into the supply lines to the closing chambers and the valve c ,
  • Such constructions are of the generic type US 4,479,788 , of the US 3,938,734 and the DE 1532676 OS known.
  • Another generic centrifuge is from the DE AS 2,022,197 known.
  • the DE 924 979 PS shows the direct injection of control fluid from a ring into a chamber at the bottom of the centrifuge.
  • the supply line for the control fluid opens radially in front of the drive spindle in an outlet region, which is oriented and arranged so that the exiting control fluid can be sprayed directly against the drive spindle such that a portion of the control fluid - or the entire control fluid - through a gap between the Drive spindle and the centrifugal drum or a rotatably connected to the centrifugal drum part enters the hydraulic system inside the drum.
  • direct means that there is no baffle or other deflecting device between the exit from the supply line for the control fluid and the drive spindle.
  • the baffle of the WO 9608313A1 be saved, because it has been found that despite the rotation of the spindle, a deflection of the fluid jet (as fluid is used as water) also on the rotating spindle, a deflection of the same takes place in the drum, so that the fluid system in the interior of the drum with excellent the fluid is charged.
  • the spindle in the region in which the water jet occurs and in which it enters the drum has a relatively smooth surface, ie, it should preferably have no bumps that would distract the water jet undesirable, in particular in the area no grooves or sudden diameter changes present.
  • it has a constant or slightly conical diameter.
  • it could also be conical.
  • the usual relatively large radial gap (see Fig. 2 ) between the drive spindle and the drum or a rotatably connected to the drum part such as a ring can also be significantly reduced in this way, which, inter alia, brings with it the advantage that the control fluid overflow diameter can move closer to the center in the centrifugal drum.
  • the outlet area is designed as an outlet nozzle and the outlet nozzle is oriented such that the control fluid is preferably acute-angled - ie at an angle relative to the axis of rotation which is between 0 ° and 90 °, preferably between 20 ° and 70 ° - without intermediate elements such as a baffle is sprayed against the drive spindle in the region of the gap.
  • the idea of the invention is implemented particularly advantageously.
  • the hydraulic system which can be charged with fluid can be used, for example, to actuate a wide variety of emptying mechanisms, thus for controlling piston slides, diaphragms, piston valves and / or piston-slide-like constructions.
  • Fig. 2 shows a lower portion of a separator 1 with a centrifugal drum 2 with a vertical axis of rotation D, the liquid discharges (not shown here) and at least one or more Feststoffaustragsö réelle (s) 3, which / a hydraulically by means of control fluid - in particular control fluid - actuated piston valve 4 assigned is.
  • the control fluid is directed to the centrifugal drum 1 through at least one (or more) supply line (s) 14 for control fluid.
  • Fig. 1 ends with a separator according to the invention, otherwise otherwise, for example, analogous to Fig. 2 or may be constructed differently, the at least one supply line 14 for control fluid radially in front of the drive spindle 5 in an outlet region, in particular an outlet nozzle 6, which is aligned such that the control fluid is injected at an acute angle ⁇ at an angle to the axis of rotation against the drive spindle 5 which is between 0 ° and 90 °, in particular between 20 ° and 70 °.
  • the outlet nozzle 6 is aligned such that at least a portion of the exiting from the outlet nozzle 6 control fluid through an annular gap 7 between the drive spindle 5 and the centrifugal drum (or rotatably connected to the drum part, here a ring 8) from below into the centrifugal drum 2 and thus in the hydraulic system 9 occurs (see the arrow W, which illustrates the entry of the control fluid), which for actuating a spool valve in the manner of Fig. 2 or possibly also for actuating other fluid-operated devices.
  • the radial extent of the annular gap 7 between the drive spindle 5 and the drum or here the ring 8 is only 0.5 mm to 10 mm, preferably 1 mm to 4 mm.
  • the exit nozzle 6 is preferably designed to produce a directional, relatively constant diameter jet that does not fan out substantially, i. that the beam in the area of impact should preferably have a diameter which is less than the spindle diameter, in particular less than 50%, very particularly preferably less than 35% of the spindle diameter.
  • a slinger 10 is disposed on the drive spindle 5.
  • This slinger 10 has a conical shape here. It protrudes radially over a likewise conically shaped cover 11 on the machine frame 12 away, which does not rotate during operation and up to an annular gap 13 to the drive spindle 5 heranragt.
  • a stepped shape of the slinger as well as the cover would also be conceivable (e.g., stepped cylindrical).

Landscapes

  • Centrifugal Separators (AREA)

Description

Die Erfindung betrifft eine Zentrifuge, insbesondere einen Separator, nach dem Oberbegriff des Anspruchs 1.The invention relates to a centrifuge, in particular a separator, according to the preamble of claim 1.

Für den industriellen Einsatz geeignete Separatoren sind aus dem Stand der Technik an sich bekannt. Nach einer Bauart weisen derartige Separatoren zur Feststoffentleerung ein Hydrauliksystem auf, welches ein mittels Steuerfluid betätigbares Verschlussorgan aufweist, das in der Regel als Kolbenschieber ausgebildet ist.Separators suitable for industrial use are known per se from the prior art. According to one type, such separators for discharging solids comprise a hydraulic system which has a closure element which can be actuated by means of control fluid and which is generally designed as a piston slide.

Eine weitere bekannte Konstruktion des Standes der Technik ist in Fig. 2 dargestellt. Fig. 2 zeigt den unteren Bereich einer selbst entleerenden Separatortrommel, die ein Hydrauliksystem aufweist, mit dem es möglich ist, kontrollierte Teilentleerungen der Schleudertrommel durchzuführen.Another known construction of the prior art is in Fig. 2 shown. Fig. 2 shows the lower portion of a self-draining separator drum having a hydraulic system with which it is possible to perform controlled partial discharges of the centrifugal drum.

Das Hydrauliksystem umfasst eine Zuleitung für Schließfluid (unten) und Ventilsteuerfluid (oben) als Steuerfluid, welches in Schließkammern a, b leitbar ist. Infolge der Zentrifugalkraft bildet sich in den Schließkammern ein Flüssigkeitsring aus, der eine Kraft auf den Kolbenschieber ausübt, welche diesen oben in eine Position drückt, in welcher er die Feststoffaustragsöffnungen verschließt. Soll eine Entleerung der Trommel vorgenommen werden, wird das Ventil c durch Öffnungsfluid geöffnet.The hydraulic system comprises a supply line for closing fluid (below) and valve control fluid (above) as control fluid, which can be conducted in closing chambers a, b. As a result of the centrifugal force forms in the lock chambers, a liquid ring exerts a force on the spool, which presses it up into a position in which it closes the Feststoffaustragsöffnungen. If an emptying of the drum to be made, the valve c is opened by opening fluid.

Wie zu erkennen, wird das Steuerfluid durch Steuerfluidzuleitungen zugeleitet, welche sich relativ nahe zur Spindel parallel zu dieser vertikal nach oben bis in die Trommel hinein erstrecken, in deren Inneren sie das Steuerfluid radial nach außen in die Zuleitungen zu den Schließkammern und zum Ventil c spritzen.As can be seen, the control fluid is supplied by control fluid supply lines which extend relatively close to the spindle parallel to this vertically upwards into the drum inside which they inject the control fluid radially outwards into the supply lines to the closing chambers and the valve c ,

Derartige Konstruktionen sind aus der gattungsgemäßen US 4,479,788 , der US 3,938,734 und der DE 1532676 OS bekannt. Eine weitere gattungsgemäße Zentrifuge ist aus der DE AS 2 022 197 bekannt. Die DE 924 979 PS zeigt das direkte Einspritzen von Steuerfluid aus einem Ring in eine Kammer am Unterteil der Zentrifuge.Such constructions are of the generic type US 4,479,788 , of the US 3,938,734 and the DE 1532676 OS known. Another generic centrifuge is from the DE AS 2,022,197 known. The DE 924 979 PS shows the direct injection of control fluid from a ring into a chamber at the bottom of the centrifuge.

Noch aufwendigere Konstruktionen zeigen die US 4,717,376 und die US 4,781,670 oder die DE 38 29 158 A1 , wobei nach der letzteren Schrift Flüssigkeit durch eine Spindel hindurch in das Trommelunterteil geleitet wird.Even more elaborate constructions show the US 4,717,376 and the US 4,781,670 or the DE 38 29 158 A1 , According to the latter document liquid is passed through a spindle into the drum base.

Darüber hinaus ist es aus der WO 96/08313 A1 bekannt, die Zuleitung für das Steuerfluid radial vor der Antriebsspindel auf ein Ablenkblech zu lenken, welches die Flüssigkeit durch einen Spalt zwischen der Antriebsspindel und der Schleudertrommel oder einem mit der Schleudertrommel drehfest verbundenen Teil in das Hydrauliksystem im Inneren der Trommel leitet. Auch hieran ist der immer noch relativ hohe aufwendige konstruktive Aufwand problematisch.In addition, it is from the WO 96/08313 A1 known to direct the supply line for the control fluid radially in front of the drive spindle on a baffle, which passes the liquid through a gap between the drive spindle and the centrifugal drum or a rotatably connected to the centrifugal drum part in the hydraulic system inside the drum. Again, the still relatively high cost of construction is problematic.

Zum technologischen Hintergrund wird noch die US 2,564,899 genannt.The technological background is still the US 2,564,899 called.

Es besteht daher der Bedarf nach einer weiteren konstruktiven Vereinfachung der Steuerfluidzufuhr in die Schleudertrommel.There is therefore a need for a further constructive simplification of the control fluid supply into the centrifugal drum.

Die Lösung dieses Problems ist die Aufgabe der Erfindung.The solution to this problem is the object of the invention.

Die Erfindung löst diese Aufgabe durch den Gegenstand des Anspruchs 1.The invention solves this problem by the subject matter of claim 1.

Danach mündet die Zuleitung für das Steuerfluid radial vor der Antriebsspindel in einem Austrittsbereich, der derart ausgerichtet und angeordnet ist, dass das austretende Steuerfluid derart direkt gegen die Antriebsspindel spritzbar ist, dass ein Teil des Steuerfluids - oder das gesamte Steuerfluid - durch einen Spalt zwischen der Antriebsspindel und der Schleudertrommel oder einem mit der Schleudertrommel drehfest verbundenen Teil in das Hydrauliksystem im Inneren der Trommel eintritt. Direkt bedeutet insbesondere, dass kein Ablenkblech oder eine sonstige ablenkende Einrichtung zwischen dem Austritt aus der Zuleitung für das Steuerfluid und der Antriebsspindel liegt.Thereafter, the supply line for the control fluid opens radially in front of the drive spindle in an outlet region, which is oriented and arranged so that the exiting control fluid can be sprayed directly against the drive spindle such that a portion of the control fluid - or the entire control fluid - through a gap between the Drive spindle and the centrifugal drum or a rotatably connected to the centrifugal drum part enters the hydraulic system inside the drum. In particular, direct means that there is no baffle or other deflecting device between the exit from the supply line for the control fluid and the drive spindle.

Derart ist es nicht mehr notwendig, die Steuerfluidzuleitung selbst direkt bis in die Schleudertrommel zu führen, so dass der Trommelmantel bzw. das mit der Trommel drehfest verbundene Teil radial relativ nahe fast direkt bis an die Antriebsspindel heran reichen können.Thus, it is no longer necessary to lead the control fluid supply itself directly into the centrifugal drum, so that the drum shell or the rotatably connected to the drum part radially relative almost directly to the drive spindle can reach zoom.

Unerwartet kann zudem auch das Umlenkblech der WO 9608313A1 eingespart werden, denn es hat sich herausgestellt, dass trotz der Drehung der Spindel eine Umlenkung des Fluidstrahls (als Fluid wird beispielsweise Wasser eingesetzt) auch an der drehenden Spindel eine Umlenkung desselben in die Trommel erfolgt, so dass das Fluidsystem im Inneren der Trommel hervorragend mit dem Fluid beschickt wird.Unexpectedly, also the baffle of the WO 9608313A1 be saved, because it has been found that despite the rotation of the spindle, a deflection of the fluid jet (as fluid is used as water) also on the rotating spindle, a deflection of the same takes place in the drum, so that the fluid system in the interior of the drum with excellent the fluid is charged.

Dabei ist es vorteilhaft, dass die Spindel in dem Bereich, in welchem der Wasserstrahl auftritt und in dem sie in die Trommel eintritt über eine relativ glatte Oberfläche verfügt, d.h., sie sollte vorzugsweise keine Unebenheiten aufweisen, die den Wasserstrahl ungewünscht ablenken würden, insbesondere sind in dem Bereich keine rillen oder sprunghafte Durchmesseränderungen vorhanden.Vorzugsweise weist sie einen konstanten oder leicht konischen Durchmesser auf. Alternativ könnte sie auch konisch ausgebildet sein.It is advantageous that the spindle in the region in which the water jet occurs and in which it enters the drum has a relatively smooth surface, ie, it should preferably have no bumps that would distract the water jet undesirable, in particular in the area no grooves or sudden diameter changes present. Preferably, it has a constant or slightly conical diameter. Alternatively, it could also be conical.

Der sonst übliche relativ große radiale Spalt (siehe Fig. 2) zwischen der Antriebsspindel und der Trommel bzw. einem mit der Trommel drehfest verbundenem Teil wie einem Ring kann auf diese Weise zudem deutlich verkleinert werden, was u.a. den Vorteil mit sich bringt, dass der Steuerfluid-Überlaufdurchmesser in der Schleudertrommel näher zum Zentrum rücken kann.The usual relatively large radial gap (see Fig. 2 ) between the drive spindle and the drum or a rotatably connected to the drum part such as a ring can also be significantly reduced in this way, which, inter alia, brings with it the advantage that the control fluid overflow diameter can move closer to the center in the centrifugal drum.

Vorzugsweise ist der Austrittsbereich als Austrittsdüse ausgelegt und die Austrittsdüse ist derart ausgerichtet, dass das Steuerfluid vorzugsweise spitzwinklig - d.h. in einem Winkel relativ zur Drehachse, der zwischen 0° und 90°, vorzugsweise zwischen 20° und 70° liegt - ohne dazwischen liegende Elemente wie ein Ablenkblech gegen die Antriebsspindel im Bereich des Spaltes gespritzt wird. Derart wird der Gedanke der Erfindung besonders vorteilhaft umgesetzt.Preferably, the outlet area is designed as an outlet nozzle and the outlet nozzle is oriented such that the control fluid is preferably acute-angled - ie at an angle relative to the axis of rotation which is between 0 ° and 90 °, preferably between 20 ° and 70 ° - without intermediate elements such as a baffle is sprayed against the drive spindle in the region of the gap. In this way, the idea of the invention is implemented particularly advantageously.

Das mit Fluid beschickbare Hydrauliksystem kann beispielsweise zur Betätigung verschiedenster Entleerungsmechanismen genutzt werden, so zur Ansteuerung von Kolbenschiebern, Membranen, Kolbenventilen und/oder kolbenschieberähnlichen Konstruktionen.The hydraulic system which can be charged with fluid can be used, for example, to actuate a wide variety of emptying mechanisms, thus for controlling piston slides, diaphragms, piston valves and / or piston-slide-like constructions.

Vorteilhafte Ausgestaltungen der Erfindung sind den Unteransprüchen zu entnehmen.Advantageous embodiments of the invention can be found in the dependent claims.

Nachfolgend wird die Erfindung anhand eines Ausführungsbeispiels unter Bezug auf die Zeichnung näher beschrieben. Es zeigt:

Fig. 1
eine Schnittansicht eines Abschnitts eines erfindungsgemäßen Separators, welche die Steuerfluidzufuhr in die Schleudertrommel veranschaulicht; und
Fig. 2
einen Schnitt durch eine Separatortrommel nach dem Stand der Technik.
The invention will be described with reference to an embodiment with reference to the drawings. It shows:
Fig. 1
a sectional view of a portion of a separator according to the invention, which illustrates the control fluid supply to the centrifugal drum; and
Fig. 2
a section through a separator drum according to the prior art.

Fig. 2 zeigt einen unteren Teilbereich eines Separators 1 mit einer Schleudertrommel 2 mit vertikaler Drehachse D, die Flüssigkeitsausträge (hier nicht dargestellt) und wenigstens eine oder mehrere Feststoffaustragsöffnung(en) 3 aufweist, der/denen ein hydraulisch mittels Steuerfluid - insbesondere Steuerfluid - betätigter Kolbenschieber 4 zugeordnet ist. Fig. 2 shows a lower portion of a separator 1 with a centrifugal drum 2 with a vertical axis of rotation D, the liquid discharges (not shown here) and at least one or more Feststoffaustragsöffnung (s) 3, which / a hydraulically by means of control fluid - in particular control fluid - actuated piston valve 4 assigned is.

Das Steuerfluid wird durch wenigstens eine (oder mehrere) Zuleitung(en) 14 für Steuerfluid zur Schleudertrommel 1 geleitet.The control fluid is directed to the centrifugal drum 1 through at least one (or more) supply line (s) 14 for control fluid.

Nach Fig. 1 endet bei einem erfindungsgemäßen Separator, der ansonsten beispielsweise analog zur Fig. 2 oder auch anders aufgebaut sein kann, die wenigstens eine Zuleitung 14 für Steuerfluid radial vor der Antriebsspindel 5 in einem Austrittsbereich, insbesondere einer Austrittsdüse 6, die derart ausgerichtet ist, dass das Steuerfluid spitzwinklig in einem Winkel α relativ zu Drehachse gegen die Antriebsspindel 5 gespritzt wird, der zwischen 0° und 90°, insbesondere zwischen 20° und 70° liegt.To Fig. 1 ends with a separator according to the invention, otherwise otherwise, for example, analogous to Fig. 2 or may be constructed differently, the at least one supply line 14 for control fluid radially in front of the drive spindle 5 in an outlet region, in particular an outlet nozzle 6, which is aligned such that the control fluid is injected at an acute angle α at an angle to the axis of rotation against the drive spindle 5 which is between 0 ° and 90 °, in particular between 20 ° and 70 °.

Die Austrittsdüse 6 ist derart ausgerichtet, dass wenigstens ein Teil des aus der Austrittsdüse 6 austretenden Steuerfluids durch einen Ringspalt 7 zwischen der Antriebsspindel 5 und der Schleudertrommel (bzw. einen mit der Trommel drehfest verbundenen Teil, hier ein Ring 8) von unten in die Schleudertrommel 2 und damit in deren Hydrauliksystem 9 eintritt (siehe hierzu den Pfeil W, der den Eintritt des Steuerfluids veranschaulicht), welches zum Betätigen eines Kolbenschiebers nach Art der Fig. 2 oder ggf. auch zum Betätigen anderer fluidbetätigter Einrichtungen dienen kann. Die radiale Erstreckung des Ringspaltes 7 zwischen der Antriebsspindel 5 und der Trommel bzw. hier dem Ring 8 beträgt nur 0,5 mm bis 10 mm, vorzugsweise 1 mm bis 4 mm.The outlet nozzle 6 is aligned such that at least a portion of the exiting from the outlet nozzle 6 control fluid through an annular gap 7 between the drive spindle 5 and the centrifugal drum (or rotatably connected to the drum part, here a ring 8) from below into the centrifugal drum 2 and thus in the hydraulic system 9 occurs (see the arrow W, which illustrates the entry of the control fluid), which for actuating a spool valve in the manner of Fig. 2 or possibly also for actuating other fluid-operated devices. The radial extent of the annular gap 7 between the drive spindle 5 and the drum or here the ring 8 is only 0.5 mm to 10 mm, preferably 1 mm to 4 mm.

Die Austrittsdüse 6 ist vorzugsweise derart ausgelegt ist, dass sie einen gerichteten Strahl relativ konstanten Durchmessers erzeugt, der sich im Wesentlichen nicht auffächert, d.h. dass der Strahl im Auftreffbereich möglichst einen Durchmesser aufweisen sollte, der geringer ist als der Spindeldurchmesser, insbesondere geringer als 50%, ganz besonders bevorzugt geringer als 35% des Spindeldurchmessers.The exit nozzle 6 is preferably designed to produce a directional, relatively constant diameter jet that does not fan out substantially, i. that the beam in the area of impact should preferably have a diameter which is less than the spindle diameter, in particular less than 50%, very particularly preferably less than 35% of the spindle diameter.

Unterhalb der Austrittsdüse 6 ist ein Schleuderring 10 auf der Antriebsspindel 5 angeordnet.Below the outlet nozzle 6, a slinger 10 is disposed on the drive spindle 5.

Dieser Schleuderring 10 weist hier eine konische Form auf. Er ragt hier radial über eine ebenfalls konisch geformte Abdeckung 11 am Maschinengestell 12 hinweg, die sich im Betrieb nicht mitdreht und bis auf einen Ringspalt 13 an die Antriebsspindel 5 heranragt. Eine gestufte Form des Schleuderringes wie auch der Abdeckung wäre ebenfalls denkbar (z.B. gestuft zylindrisch).This slinger 10 has a conical shape here. It protrudes radially over a likewise conically shaped cover 11 on the machine frame 12 away, which does not rotate during operation and up to an annular gap 13 to the drive spindle 5 heranragt. A stepped shape of the slinger as well as the cover would also be conceivable (e.g., stepped cylindrical).

Hierdurch wird der Bereich unterhalb des Trommelraumes (d.h. der Raum, welcher direkt die Schleudertrommel umgibt) effektiv und einfach labyrinthdichtungsartig vor einem Eindringen von Verunreinigungen, insbesondere vor einem Eindringen von abtropfendem Steuerfluid, geschützt. Damit ergibt sich insbesondere ein Schutz des Antriebsbereichs unterhalb der Abdeckung 11. Bei einer Drehung der Antriebsspindel 5 spritzt der Schleuderring Flüssigkeit nach außen, so dass er im Betrieb besonders wirksam ist. Bezugszeichen Separator 1 Schleudertrommel 2 Feststoffaustragsöffnung(en) 3 Kolbenschieber 4 Antriebsspindel 5 Austrittsdüse 6 Ringspalt 7 Ring 8 Steuerfluidleitungssystem 9 Schleuderring 10 Abdeckblech 11 Maschinengestell 12 Ring spalt 13 Steuerfluidzuleitung 14 Winkel α Drehachse D As a result, the area below the drum space (ie the space which directly surrounds the centrifugal drum) effectively and simply labyrinth seal-like protected against the ingress of contaminants, in particular against the ingress of dripping control fluid. This results in particular a protection of the drive area below the cover 11. Upon rotation of the drive spindle. 5 The slinger injects liquid to the outside, so that it is particularly effective during operation. <B> reference numerals </ b> separator 1 centrifugal drum 2 Solids discharge (s) 3 spool 4 drive spindle 5 exhaust nozzle 6 annular gap 7 ring 8th Control fluid line system 9 slinger 10 Cover plate 11 machine frame 12 Ring splits 13 Control fluid supply line 14 angle α axis of rotation D

Claims (14)

  1. Centrifuge, particularly a separator (1), having
    a. a rotatable centrifugal drum (2) with a vertical axis of rotation (D),
    b. a rotatable drive spindle (5) for the centrifugal drum (2),
    c. at least one feed line (14) for a control fluid in a hydraulic system in the interior of the centrifugal drum,
    characterized in that
    d. the feed line (14) for the control fluid leads out radially in front of the drive spindle (5) in an outlet region (6), which is oriented and arranged such that the emerging control fluid can be spread directly against the drive spindle (5) such that a portion of the control fluid enters through a gap (7) between the drive spindle (5) and the centrifugal drum (2) or a part (8) non-rotatably connected with the centrifugal drum (2) into the hydraulic system (9) in the interior of the drum,
    e. that the drive spindle (5) has a relatively smooth surface in the region in which the water jet impacts and in which the drive spindle (5) enters the centrifugal drum (2); i.e. there are no grooves or abrupt diameter changes.
  2. Centrifuge, particularly a separator, according to Claim 1, characterized in that the outlet region is designed as an outlet nozzle (6).
  3. Centrifuge, particularly a separator, according to Claim 1, characterized in that the outlet nozzle (6) is designed such that it generates a directed jet.
  4. Centrifuge, particularly a separator, according to Claim 1 or 2, characterized in that the outlet nozzle (6) is oriented such that the control fluid is sprayed at an angle α relative to the axis of rotation (D) against the drive spindle (5) in the region of the gap (7), which angle α is between 0° and 90°.
  5. Centrifuge, particularly a separator, according to one of the preceding claims, characterized in that the angle α relative to the axis of rotation (D) is between 20° and 70°.
  6. Centrifuge, particularly a separator, according to one of the preceding claims, characterized in that the drive spindle (5) has a constant diameter or a slightly conical diameter without diameter discontinuities in the region in which the fluid jet impacts on the drive spindle (5).
  7. Centrifuge, particularly a separator, according to one of the preceding claims, characterized in that the radial gap width of the gap (7) is between 0.5 and 10 mm, preferably between 1 to 4 mm.
  8. Centrifuge, particularly a separator, according to one of the preceding claims, characterized in that a centrifugal ring (10) is arranged on the drive spindle (5) below the outlet nozzle (6).
  9. Centrifuge, particularly a separator, according to the one the preceding claims, characterized in that the centrifugal ring (10) has a conical shape.
  10. Centrifuge, particularly a separator, according to one of the preceding claims, characterized in that the centrifugal ring (10) has a stepped shape.
  11. Centrifuge, particularly a separator, according to one of the preceding claims, characterized in that the centrifugal ring (10) projects radially beyond a covering (11) at the machine frame (12), which covering (11) does not rotate along during the operation and projects to the drive spindle (5) except for an annular gap (13).
  12. Centrifuge, particularly a separator, according to one of the preceding claims, characterized in that the covering (11) has a conical design.
  13. Centrifuge, particularly a separator, according to one of the preceding claims, characterized in that the covering has a stepped design.
  14. Centrifuge, particularly a separator, according to one of the preceding claims, characterized by an evacuation mechanism which is hydraulically operated by means of the control fluid and to which at least one control chamber is assigned which can be acted upon by the control fluid and by the feed line (14) for the control fluid.
EP07730080.4A 2006-06-14 2007-06-12 Centrifuge, in particular separator, having a feed line for control fluid Active EP2026909B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202006009331U DE202006009331U1 (en) 2006-06-14 2006-06-14 Centrifuge especially for use in separation processes has mechanism for emptying the control fluid comprising an exit zone injecting the fluid against the drive screw with part exiting through a gap
PCT/EP2007/055751 WO2007144339A1 (en) 2006-06-14 2007-06-12 Centrifuge, in particular separator, having a feed line for control fluid

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Publication Number Publication Date
EP2026909A1 EP2026909A1 (en) 2009-02-25
EP2026909B1 true EP2026909B1 (en) 2018-12-12

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EP07730080.4A Active EP2026909B1 (en) 2006-06-14 2007-06-12 Centrifuge, in particular separator, having a feed line for control fluid

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US (1) US8123667B2 (en)
EP (1) EP2026909B1 (en)
JP (1) JP5061402B2 (en)
CN (1) CN101356010B (en)
DE (1) DE202006009331U1 (en)
WO (1) WO2007144339A1 (en)

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CN112354701B (en) * 2020-10-19 2022-08-30 北京城市排水集团有限责任公司清河第二再生水厂 Shutdown method and device of centrifugal dehydrator

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Also Published As

Publication number Publication date
DE202006009331U1 (en) 2006-08-10
US8123667B2 (en) 2012-02-28
US20090270238A1 (en) 2009-10-29
EP2026909A1 (en) 2009-02-25
JP2009539594A (en) 2009-11-19
CN101356010A (en) 2009-01-28
CN101356010B (en) 2012-07-04
WO2007144339A1 (en) 2007-12-21
JP5061402B2 (en) 2012-10-31

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