EP1407821B1 - Centrifuge with emergency-stop-system comprising solid particle feeding - Google Patents

Centrifuge with emergency-stop-system comprising solid particle feeding Download PDF

Info

Publication number
EP1407821B1
EP1407821B1 EP03020652A EP03020652A EP1407821B1 EP 1407821 B1 EP1407821 B1 EP 1407821B1 EP 03020652 A EP03020652 A EP 03020652A EP 03020652 A EP03020652 A EP 03020652A EP 1407821 B1 EP1407821 B1 EP 1407821B1
Authority
EP
European Patent Office
Prior art keywords
centrifuge
emergency
particles
balls
centrifugal drum
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.)
Expired - Fee Related
Application number
EP03020652A
Other languages
German (de)
French (fr)
Other versions
EP1407821A2 (en
EP1407821A3 (en
Inventor
Reinhard Dipl.-Ing. Moss
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.)
GEA Mechanical Equipment GmbH
Original Assignee
Westfalia Separator GmbH
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 Westfalia Separator GmbH filed Critical Westfalia Separator GmbH
Publication of EP1407821A2 publication Critical patent/EP1407821A2/en
Publication of EP1407821A3 publication Critical patent/EP1407821A3/en
Application granted granted Critical
Publication of EP1407821B1 publication Critical patent/EP1407821B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • B04B11/00—Feeding, charging, or discharging bowls
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B7/00—Elements of centrifuges
    • B04B7/02—Casings; Lids
    • B04B7/06—Safety devices ; Regulating

Definitions

  • the invention relates to a centrifuge, in particular separator with a vertical axis of rotation, which has a centrifugal drum, which is provided with a feed pipe for centrifuged material and with outlet nozzles, wherein the centrifugal drum is preceded by an emergency stop system.
  • the invention further relates to a method for realizing an emergency stop function of a centrifuge.
  • a generic centrifuge in the form of a separator with a vertical axis of rotation according to the preamble of claim 1 is known from DE 651 907 C known.
  • the DE 33 20 152 which is generic, shows a check valve with a ball arranged on a spring.
  • a centrifuge designed as a separator with a vertical axis of rotation is known with a nozzle drum, above which an emergency stop container opening into the inlet of the separator for receiving a liquid, such as water, is arranged to realize an emergency stop system.
  • the centrifugal drum may continue to rotate for a few minutes until it stops, after the emergency stop function has been activated, the liquid is fed into the centrifugal drum until it stops, so that the negative effect of the imbalance is not due to the nozzle drum becoming empty (Loss of the balancing fluid) even stronger.
  • the emergency stop container must therefore absorb, for example, up to 10m 3 of water.
  • the invention solves this object with respect to the centrifuge by the subject-matter of claim 1 and with respect to the method by the subject-matter of claim 12.
  • the emergency stop system has a supply system for the outlet nozzles clogging particles, in particular balls, in the centrifugal drum.
  • the invention further provides a method for realizing an emergency stop function of a centrifuge, in which particles, in particular balls, are guided into the centrifugal drum, which block the outlet nozzles.
  • the drum In the emergency stop case, the drum is stopped or "shut down" by the solid particles or particles, in particular spheres, with little or no further addition of water. Since the centrifugal drum can not run empty, the risk of "increasing unbalance forces" is reduced, which occurs when an existing imbalance, the centrifugal drum is emptied at high speed, as this enhances the influence of imbalance on the centrifugal drum, because the balancing effect of Product or water is eliminated.
  • the solids discharge is provided with outlet nozzles and the balls have a larger diameter than the outlet nozzles.
  • the container with the balls can be dimensioned very much smaller in particular according to this variant and is thus also cheaper than the water tank of the prior art, since only so many balls are necessary that the outlet nozzles are blocked.
  • centrifugal drum must be opened after activation of the emergency stop system to remove the particles, in particular spheres. This opening is but in the emergency stop case due to imbalances i. In general anyway required, so that usually no additional expense arises by removing the balls from the centrifugal drum.
  • the particles in particular spheres, have a diameter which is larger by at least 5% than the outlet nozzles.
  • the particles, in particular spheres may be made of rubber or plastic or advantageously to avoid hygiene problems or the like of dried and optionally pressed solid of the centrifuged material to be processed.
  • the particles are introduced under pressure into the centrifugal drum.
  • FIG. 1 shows a centrifuge designed as a separator 1 with a vertical axis of rotation, which has a centrifugal drum 2 - a nozzle drum - which is surrounded by a hood 3.
  • the centrifugal drum 2 has here a guided from above into the centrifugal drum 2 supply pipe 4 for centrifugal goods, which opens into a manifold 5, from which the centrifuged material is passed into the centrifugal space 6 of the centrifugal drum 2.
  • a supply line from below through the spindle in a distributor is conceivable.
  • the spindle acts in this case as a supply pipe.
  • At least one solids discharge for a firmer phase and at least one liquid discharge for a more liquid phase are provided.
  • the solids discharge is realized by the outlet nozzles 7 which are distributed around the circumference of the centrifugal drum 2 (or which may for example be formed in a piston valve) and through which the solid is passed into a solids trap 8 and from there into a discharge channel 9.
  • the liquid outlet is here provided with a paring disc 10, which opens into a discharge line 11.
  • the supply pipe 4 is preceded by a feed line 12 which is arranged above the centrifugal drum 2.
  • a branch pipe 13 which is provided with a valve 14 - the valve 14 is thus upstream of the supply pipe - and that at its end facing away from the feed line 13 into a container 15 for receiving particles, in particular balls 16, for example Rubber, opens, which have a larger diameter than the outlet nozzles 7.
  • particles in particular balls 16, for example Rubber
  • the container 15 with the balls 16 can be dimensioned much smaller and is therefore also cheaper than the water tank of the prior art.

Description

Die Erfindung betrifft eine Zentrifuge, insbesondere Separator mit vertikaler Drehachse, welche eine Schleudertrommel aufweist, die mit einem Zuleitungsrohr für Schleudergut sowie mit Auslassdüsen versehen ist, wobei der Schleudertrommel ein Not-Aus-System vorgeschaltet ist. Die Erfindung betrifft ferner ein Verfahren zur Realisierung einer Not-Aus-Funktion einer Zentrifuge.The invention relates to a centrifuge, in particular separator with a vertical axis of rotation, which has a centrifugal drum, which is provided with a feed pipe for centrifuged material and with outlet nozzles, wherein the centrifugal drum is preceded by an emergency stop system. The invention further relates to a method for realizing an emergency stop function of a centrifuge.

Eine gattungsgemäße Zentrifuge in Form eines Separators mit vertikaler Drehachse nach dem Oberbegriff des Anspruches 1 ist aus der DE 651 907 C bekannt.A generic centrifuge in the form of a separator with a vertical axis of rotation according to the preamble of claim 1 is known from DE 651 907 C known.

Die DE 33 20 152 , die gattungsfremd ist, zeigt ein Rückschlagventil mit einer an einer Feder angeordneten Kugel.The DE 33 20 152 , which is generic, shows a check valve with a ball arranged on a spring.

Aus der DE 2 046 274 A ist es ferner bekannt, im Notfall bei größerer Unwucht Auslaßöffnungen einer Zentrifuge zu verschließen.From the DE 2 046 274 A It is also known to close in an emergency with larger imbalance outlet openings of a centrifuge.

Es kann z.B. infolge des Auftritts von Unwuchten notwendig sein, einen Separator von Hand oder automatisch abzuschalten. Unwuchten können durch einseitiges Verstopfen einzelner Düsen verursacht werden, da in diesen Bereichen der Feststoff nicht mehr ausgetragen wird. Bekannt ist z.B. eine als Separator mit vertikaler Drehachse ausgebildete Zentrifuge mit einer Düsentrommel, oberhalb welcher zur Realisierung eines Not-Aus-Systems ein in den Zulauf des Separators mündender Not-Aus-Behälter zur Aufnahme einer Flüssigkeit wie Wasser angeordnet ist.It may be necessary, for example as a result of the occurrence of imbalances, to disconnect a separator by hand or automatically. Imbalances can be caused by one-sided clogging caused individual nozzles, since in these areas of the solid is no longer discharged. For example, a centrifuge designed as a separator with a vertical axis of rotation is known with a nozzle drum, above which an emergency stop container opening into the inlet of the separator for receiving a liquid, such as water, is arranged to realize an emergency stop system.

Im Not-Aus-Fall wird der Produktzulauf in der Regel gestoppt und auf Wasser umgeschaltet, um Verluste zu vermeiden.In the emergency stop case, the product feed is usually stopped and switched to water to avoid losses.

Da sich die Schleudertrommel bis zu ihrem Stillstand u.U. noch minutenlang weiterdreht, wird nach dem Aktivieren der Not-Aus-Funktion noch so lange die Flüssigkeit in die Schleudertrommel geleitet, bis diese stillsteht, damit sich die negative Auswirkung der Unwucht nicht durch das Leerlaufen der Düsentrommel (Verlust der ausgleichenden Flüssigkeit) noch verstärkt. Der Not-Aus-Behälter muss daher z.B. bis zu 10m3 Wasser aufnehmen.Since the centrifugal drum may continue to rotate for a few minutes until it stops, after the emergency stop function has been activated, the liquid is fed into the centrifugal drum until it stops, so that the negative effect of the imbalance is not due to the nozzle drum becoming empty (Loss of the balancing fluid) even stronger. The emergency stop container must therefore absorb, for example, up to 10m 3 of water.

Nachteilig sind insofern insbesondere der relativ große Platzbedarf des Not-Aus-Behälters und dessen relativ hohe Kosten.In particular, the relatively large space requirement of the emergency stop container and its relatively high costs are disadvantageous.

Es ist die Aufgabe der Erfindung, diese Probleme zu verringern.It is the object of the invention to reduce these problems.

Die Erfindung löst diese Aufgabe in Hinsicht auf die Zentrifuge durch den Gegenstand des Anspruchs 1 und in Hinsicht auf das Verfahren durch den Gegenstand des Anspruchs 12.The invention solves this object with respect to the centrifuge by the subject-matter of claim 1 and with respect to the method by the subject-matter of claim 12.

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

Nach der Erfindung weist das Not-Aus-System ein Zuführsystem für die Auslassdüsen verstopfende Teilchen, insbesondere Kugeln, in die Schleudertrommel auf. Die Erfindung schafft ferner ein Verfahren zur Realisierung einer Not-Aus-Funktion einer Zentrifuge, bei dem in die Schleudertrommel Teilchen, insbesondere Kugeln, geleitet werden, welche die Auslassdüsen verstopfen.According to the invention, the emergency stop system has a supply system for the outlet nozzles clogging particles, in particular balls, in the centrifugal drum. The invention further provides a method for realizing an emergency stop function of a centrifuge, in which particles, in particular balls, are guided into the centrifugal drum, which block the outlet nozzles.

Im Not-Aus-Fall wird die Trommel durch die festen Teilchen bzw. Partikel, insbesondere Kugeln, ohne oder nur mit geringer weiterer Wasserzugabe kurzfristig gestoppt bzw. "heruntergefahren". Da die Schleudertrommel nicht mehr leer laufen kann, wird die Gefahr "steigender Unwuchtkräfte" verringert, welche auftritt, wenn bei einer bestehenden Unwucht die Schleudertrommel bei hoher Drehzahl entleert wird, da dies den Einfluss der Unwucht auf die Schleudertrommel verstärkt, weil die ausgleichende Wirkung des Produktes oder Wassers entfällt.In the emergency stop case, the drum is stopped or "shut down" by the solid particles or particles, in particular spheres, with little or no further addition of water. Since the centrifugal drum can not run empty, the risk of "increasing unbalance forces" is reduced, which occurs when an existing imbalance, the centrifugal drum is emptied at high speed, as this enhances the influence of imbalance on the centrifugal drum, because the balancing effect of Product or water is eliminated.

Besonders bevorzugt ist der Feststoffaustrag mit Auslassdüsen versehen und die Kugeln weisen einen größeren Durchmesser als die Auslassdüsen auf.Particularly preferably, the solids discharge is provided with outlet nozzles and the balls have a larger diameter than the outlet nozzles.

Der Behälter mit den Kugeln kann insbesondere nach dieser Variante sehr viel kleiner dimensioniert werden und ist insofern auch kostengünstiger als der Wasserbehälter des Standes der Technik, da nur so viele Kugeln notwendig sind, daß die Auslassdüsen verstopft werden.The container with the balls can be dimensioned very much smaller in particular according to this variant and is thus also cheaper than the water tank of the prior art, since only so many balls are necessary that the outlet nozzles are blocked.

Zwar muss die Schleudertrommel nach einer Aktivierung des Not-Aus-Systems geöffnet werden, um die Teilchen, insbesondere Kugeln, zu entfernen. Dieses Öffnen ist aber im Not-Aus-Fall infolge von Unwuchten i. allg. sowieso erforderlich, so daß im Regelfall kein Mehraufwand durch das Entfernern der Kugeln aus der Schleudertrommel entsteht.Although the centrifugal drum must be opened after activation of the emergency stop system to remove the particles, in particular spheres. This opening is but in the emergency stop case due to imbalances i. In general anyway required, so that usually no additional expense arises by removing the balls from the centrifugal drum.

Als vorteilhaft hat es sich herausgestellt, wenn die Teilchen, insbesondere Kugeln einen um wenigstens 5% größeren Durchmesser als die Auslassdüsen aufweisen.It has proved to be advantageous if the particles, in particular spheres, have a diameter which is larger by at least 5% than the outlet nozzles.

Die Teilchen, insbesondere Kugeln können aus Gummi oder Kunststoff oder aber vorteilhaft zur Vermeidung von Hygieneproblemen oder dergleichen aus getrocknetem und ggf. gepresstem Feststoff des zu verarbeitenden Schleudergutes bestehen.The particles, in particular spheres may be made of rubber or plastic or advantageously to avoid hygiene problems or the like of dried and optionally pressed solid of the centrifuged material to be processed.

Bevorzugt werden die Teilchen unter Druck in die Schleudertrommel eingeleitet.Preferably, the particles are introduced under pressure into the centrifugal drum.

Nachfolgend wird die Erfindung anhand von Ausführungsbeispielen unter Bezug auf die Zeichnung näher beschrieben. Es zeigt:

Fig. 1
einen erfindungsgemäßen Separator.
The invention will be described in more detail by means of exemplary embodiments with reference to the drawing. It shows:
Fig. 1
a separator according to the invention.

Fig. 1 zeigt eine als Separator 1 mit vertikaler Drehachse ausgebildete Zentrifuge, welche eine Schleudertrommel 2 - eine Düsentrommel - aufweist, die von einer Haube 3 umgeben ist.FIG. 1 shows a centrifuge designed as a separator 1 with a vertical axis of rotation, which has a centrifugal drum 2 - a nozzle drum - which is surrounded by a hood 3.

Die Schleudertrommel 2 weist hier ein von oben in die Schleudertrommel 2 geführtes Zuleitungsrohr 4 für Schleudergut auf, das in einen Verteiler 5 mündet, aus dem das Schleudergut in den Schleuderraum 6 der Schleudertrommel 2 geleitet wird. Alternativ ist auch eine Zuleitung von unten durch die Spindel in einen Verteiler denkbar. Die Spindel fungiert in diesem Fall als Zulaufrohr.The centrifugal drum 2 has here a guided from above into the centrifugal drum 2 supply pipe 4 for centrifugal goods, which opens into a manifold 5, from which the centrifuged material is passed into the centrifugal space 6 of the centrifugal drum 2. Alternatively, a supply line from below through the spindle in a distributor is conceivable. The spindle acts in this case as a supply pipe.

Zur Ableitung des Schleudergutes aus der Düsentrommel 2 ist wenigstens ein Feststoffaustrag für eine festere Phase und wenigstens ein Flüssigkeitsaustrag für eine flüssigere Phase vorgesehen. Der Feststoffaustrag wird durch die Auslassdüsen 7 realisiert, welche am Umfang der Schleudertrommel 2 verteilt sind (oder die z.B. in einem Kolbenschieber ausgebildet sein können) und durch die der Feststoff in einen Feststoffänger 8 und von dort in einen Ableitungskanal 9 geleitet wird. Der Flüssigkeitsauslaß ist dagegen hier mit einer Schälscheibe 10 versehen, welche in eine Ableitung 11 mündet.For discharging the centrifuged material from the nozzle drum 2, at least one solids discharge for a firmer phase and at least one liquid discharge for a more liquid phase are provided. The solids discharge is realized by the outlet nozzles 7 which are distributed around the circumference of the centrifugal drum 2 (or which may for example be formed in a piston valve) and through which the solid is passed into a solids trap 8 and from there into a discharge channel 9. The liquid outlet, however, is here provided with a paring disc 10, which opens into a discharge line 11.

Dem Zuleitungsrohr 4 ist eine Zuleitung 12 vorgeschaltet, die oberhalb der Schleudertrommel 2 angeordnet ist. In die Zuleitung mündet ein Zweigrohr 13, das mit einem Ventil 14 versehen ist - das Ventil 14 ist damit dem Zuleitungsrohr vorgeschaltet - und das an seinem von der Zuleitung 13 abgewandten Ende in einen Behälter 15 zur Aufnahme von Teilchen, insbesondere Kugeln 16, z.B. aus Gummi, mündet, welche einen größeren Durchmesser aufweisen als die Auslassdüsen 7. Auf diese Weise wird ohne größeren konstruktiven Aufwand als Not-Aus-System in Form eines Zuleitungssystems 17 für Teilchen in die Schleudertrommel 2 realisiert.The supply pipe 4 is preceded by a feed line 12 which is arranged above the centrifugal drum 2. In the supply line opens a branch pipe 13 which is provided with a valve 14 - the valve 14 is thus upstream of the supply pipe - and that at its end facing away from the feed line 13 into a container 15 for receiving particles, in particular balls 16, for example Rubber, opens, which have a larger diameter than the outlet nozzles 7. In this way is realized without major design effort as an emergency stop system in the form of a supply system 17 for particles in the centrifugal drum 2.

Im Notfall - d.h. beim Anliegen eines "Not-Aus-Signals" oder bei einer Notbetätigung von Hand z.B. aufgrund einer registrierten Unwucht der Schleudertrommel 2 - wird das Ventil 14 geöffnet, so daß die Kugeln 16 (z.B. mittels Wasserdruck oder eines Kolbens - unter Druck aus dem Behälter 15 durch das Zweigrohr 13 mit dem Ventil 14 - z.B. ein Normaly-Open-Ventil - in die Zuleitung 12 und von dort in das Zuleitungsrohr 4 gedrückt bzw. mitgeschwemmt werden, bis sie schließlich durch den Verteiler 5 in den Schleuderraum eintreten, wo sie aufgrund ihres geeignet bestimmten "größeren" spezifischen Gewichtes nach außen geschleudert werden, so daß sie sich vor den Auslassdüsen 7 anlagern und diese verstopfen, so daß die Schleudertrommel 2 ohne oder nur mit geringer weiterer Wasserzugabe auslaufen bzw. "heruntergefahren" werden kann. Denkbar ist auch ein vorgespannter Behälter 15 (z.B. mittels eines druckluftbetätigten Kolbens oder dergleichen). Dabei ist der besondere Vorteil, daß die Funktion auch bei Stromausfall erhalten bleibt. Die Kugeln können im Behälter auch in einer Trägerflüssigkeit wie Wasser schwimmen, um ihre Zuleitung in den Separator zu erleichtern.In an emergency - i. upon application of an "emergency stop signal" or emergency manual operation e.g. due to a registered imbalance of the centrifugal drum 2 - the valve 14 is opened, so that the balls 16 (eg by means of water pressure or a piston - under pressure from the container 15 through the branch pipe 13 with the valve 14 - eg a Normaly Open valve - be pushed into the supply line 12 and from there into the supply pipe 4 or mitgeschwemmt until they finally enter through the distributor 5 in the centrifugal space, where they are hurled due to their suitably determined "larger" specific gravity to the outside, so that they are attach the outlet nozzles 7 and clog them, so that the centrifugal drum 2 with little or no further water addition can leak or "shut down." Also conceivable is a prestressed container 15 (eg by means of a compressed air piston or the like) The advantage is that the function is retained even in the event of a power failure such as water to facilitate their supply to the separator.

Da die Schleudertrommel 2 in diesem Zustand nicht mehr leer laufen kann, wird die Gefahr "steigender Unwuchtkräfte" verringert, welche auftritt, wenn bei einer bestehenden Unwucht die Schleudertrommel 2 bei hoher Drehzahl entleert wird, da dies den Einfluss der Unwucht auf die Schleudertrommel 2 verstärkt.Since the centrifugal drum 2 can no longer run empty in this state, the risk of "increasing unbalance forces" is reduced, which occurs when the centrifugal drum 2 is emptied at high speed at an existing unbalance, as this enhances the influence of imbalance on the centrifugal drum 2 ,

Der Behälter 15 mit den Kugeln 16 kann sehr viel kleiner dimensioniert werden und ist insofern auch kostengünstiger als der Wasserbehälter des Standes der Technik.The container 15 with the balls 16 can be dimensioned much smaller and is therefore also cheaper than the water tank of the prior art.

Bezugszeichenreference numeral

Separatorseparator
11
Schleudertrommelcentrifugal drum
22
HaubeHood
33
Zuleitungsrohrsupply pipe
44
Verteilerdistributor
55
Schleuderraumcentrifugal chamber
66
Auslassdüsenoutlet nozzles
77
FeststoffängerFeststoffänger
88th
AbleitungskanalWaterway
99
Schälscheibepeeling disc
1010
Ableitungderivation
1111
Zuleitungsupply
1212
Zweigrohrbranch pipe
1313
VentilValve
1414
Behältercontainer
1515
Kugelnroll
1616
Zuführsystemfeed
1717

Claims (13)

  1. Centrifuge, in particular a separator (1) with vertical rotation axis, which has a centrifugal drum (2) - a nozzle drum - provided with an inlet pipe (4) for centrifuge material and with outlet nozzles (7), an emergency-off system being placed upstream of the centrifugal drum (2), characterized in that the emergency-off system has a feed system (17) for feeding into the centrifugal drum particles, in particular balls (16), which block the outlet nozzles.
  2. Centrifuge according to Claim 1, characterized in that the balls (16) have a larger diameter than the outlet nozzles (7).
  3. Centrifuge according to Claim 1, characterized in that the balls (16) have an at least 5% larger diameter than the outlet nozzles (7).
  4. Centrifuge according to Claim 1 or 2, characterized in that the particles, in particular balls (16), have a greater specific weight than the liquid phase(s) of the centrifuge material to be processed.
  5. Centrifuge according to one of the preceding claims, characterized in that the particles, in particular balls (16), consist of rubber or plastic.
  6. Centrifuge according to one of the preceding claims, characterized in that the particles, in particular balls (16), consist of dried solid.
  7. Centrifuge according to one of the preceding claims, characterized in that the feed system has an emergency-off container (15) for holding the balls (16).
  8. Centrifuge according to one of the preceding claims, characterized in that the particles, in particular balls, are held in the emergency-off container (15) in a carrier liquid.
  9. Centrifuge according to one of the preceding claims, characterized in that the emergency-off container (15) is configured as a prestressed container.
  10. Centrifuge according to one of the preceding claims, characterized in that a valve (14) is placed upstream of the inlet pipe (4).
  11. Centrifuge according to one of the preceding claims, characterized in that the valve (14) is a normally-open valve.
  12. Method for realizing an emergency-off function of a centrifuge, in particular according to one of the preceding claims, characterized in that in the emergency-off case, particles, in particular balls (16), are led into the centrifugal drum (2), which block the outlet nozzles (7).
  13. Method according to Claim 12, characterized in that the particles are led under pressure into the centrifugal drum (2).
EP03020652A 2002-10-11 2003-09-11 Centrifuge with emergency-stop-system comprising solid particle feeding Expired - Fee Related EP1407821B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10247646A DE10247646B4 (en) 2002-10-11 2002-10-11 Centrifuge with emergency stop system
DE10247646 2002-10-11

Publications (3)

Publication Number Publication Date
EP1407821A2 EP1407821A2 (en) 2004-04-14
EP1407821A3 EP1407821A3 (en) 2005-09-21
EP1407821B1 true EP1407821B1 (en) 2007-11-14

Family

ID=32010463

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03020652A Expired - Fee Related EP1407821B1 (en) 2002-10-11 2003-09-11 Centrifuge with emergency-stop-system comprising solid particle feeding

Country Status (4)

Country Link
US (1) US7056272B2 (en)
EP (1) EP1407821B1 (en)
JP (1) JP2004276013A (en)
DE (2) DE10247646B4 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE517375C2 (en) * 2000-10-16 2002-06-04 Alfa Laval Ab Methods and arrangements for rapidly lowering the rotational speed of a centrifugal separator
DE10247646B4 (en) * 2002-10-11 2004-08-19 Westfalia Separator Ag Centrifuge with emergency stop system
DE102004003435A1 (en) * 2004-01-21 2005-08-11 Beiersdorf Ag Low viscosity O / W emulsion
DE102004036130C5 (en) * 2004-07-24 2013-07-25 Gea Westfalia Separator Gmbh Method for operating a centrifuge and centrifuge for carrying out the method
EP2808086A1 (en) 2013-05-27 2014-12-03 Alfa Laval Corporate AB Centrifugal separator and method for determining suitable moment for removal of heavy phase content
US11105526B1 (en) 2017-09-29 2021-08-31 Integrated Global Services, Inc. Safety shutdown systems and methods for LNG, crude oil refineries, petrochemical plants, and other facilities

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE651907C (en) * 1934-03-18 1937-10-22 Bergedorfer Eisenwerk Akt Ges Centrifugal drum with a conveyor device for the constant discharge of the separated sludge
CH203503A (en) * 1938-05-09 1939-03-15 Ter Meer Gustav Ing Dr Method for braking the drum of centrifugal machines as soon as vibrations exceeding an adjustable level occur, and device on centrifugal machines for carrying out this method.
DE1679855B1 (en) * 1967-04-10 1971-04-22 Buckau Wolf Maschf R Device for drying and cooling plastic granulated under water
DE1812105A1 (en) * 1968-12-02 1970-06-11 Westfalia Separator Ag Braking device for separators
SE336561B (en) 1969-10-23 1971-07-05 Alfa Laval Ab
SE409662B (en) * 1977-12-28 1979-09-03 Alfa Laval Ab DEVICE FOR LEAK INDICATION AT A CENTRIFUGAL SEPARATOR
DE3320152A1 (en) * 1983-06-03 1984-12-06 Westfalia Separator Ag, 4740 Oelde Continuously working centrifuge drum for concentrating suspended solids
SE455839B (en) * 1983-12-22 1988-08-15 Weibull Nils Ab CIRCUIT INDICATOR FOR CENTRIFUG
US4643709A (en) * 1985-05-01 1987-02-17 Alfa-Laval, Inc. Method of operating nozzle centrifuges
JPH06343900A (en) * 1993-06-02 1994-12-20 Mitsubishi Kakoki Kaisha Ltd Vibration control device and method for centrifugal filter
JPH08131890A (en) 1994-11-02 1996-05-28 Mitsubishi Kakoki Kaisha Ltd Shutdown method for centrifugal separating machine
JP3037689B1 (en) * 1999-06-09 2000-04-24 巴工業株式会社 Cleaning method for the rotating cylinder of the horizontal shaft type centrifuge
SE517375C2 (en) * 2000-10-16 2002-06-04 Alfa Laval Ab Methods and arrangements for rapidly lowering the rotational speed of a centrifugal separator
DE10103769C2 (en) * 2001-01-27 2003-07-31 Westfalia Separator Food Tec G centrifuge
DE10247646B4 (en) * 2002-10-11 2004-08-19 Westfalia Separator Ag Centrifuge with emergency stop system

Also Published As

Publication number Publication date
EP1407821A2 (en) 2004-04-14
DE50308589D1 (en) 2007-12-27
EP1407821A3 (en) 2005-09-21
DE10247646A1 (en) 2004-04-22
DE10247646B4 (en) 2004-08-19
US20040072666A1 (en) 2004-04-15
US7056272B2 (en) 2006-06-06
JP2004276013A (en) 2004-10-07

Similar Documents

Publication Publication Date Title
DE2601528C2 (en)
DE2633275B2 (en) Process for peeling and partially drying washed grain and machine for carrying out the process
EP2451585B1 (en) Separator comprising a vertical rotational axis
EP1407821B1 (en) Centrifuge with emergency-stop-system comprising solid particle feeding
EP1345700A1 (en) Solid-bowl screw centrifuge
EP2928613A2 (en) Outlet nozzle for a centrifuge drum
EP0430985B1 (en) Device for treating fluid to thin-bodied media
EP0515396B1 (en) Centrifuge with self-emptying centrifuging drum
EP2392405B1 (en) Separator
EP3188818A1 (en) Separator and method for separating particles from a gas flow
EP3177432A1 (en) Device and method for irradiating a suspension on workpieces
DE3817126A1 (en) FILTER CENTRIFUGE TO SEPARATE SUSPENSIONS
EP2012970A1 (en) Device for producing a high-pressure jet
EP3600679B1 (en) Self-emptying separator for the gentle discharge of shear-sensitive products, and method for operating same
EP2566626B2 (en) Nozzle separator and method for diverting a solid phase from the nozzle separator
DE60028188T2 (en) screening device
DE2150605A1 (en) Split drum centrifuge - with internal hollow plastics deflector body matched to material stream line
DE2255766A1 (en) Double cone centrifuge with quick action - double cone forms barrel with hydraulic closing, rapid opening by spring and large vent valve
DE1906170A1 (en) Device for actuating a direct clutch in a torque converter
DE117919C (en)
DE4439037C1 (en) Jet for delivery of suspension spray
DE1781261A1 (en) Two-flow shut-off device
WO2010007057A1 (en) Device and method for removing fluids and/or solids
CH422720A (en) Method and device for applying a filter aid layer
EP2586514A1 (en) Suction system with a filter unit

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): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

RIC1 Information provided on ipc code assigned before grant

Ipc: 7B 04B 7/06 A

Ipc: 7B 04B 1/10 B

17P Request for examination filed

Effective date: 20051105

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

AKX Designation fees paid

Designated state(s): DE FR GB IT NL SE

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT NL SE

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 50308589

Country of ref document: DE

Date of ref document: 20071227

Kind code of ref document: P

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20080313

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20080815

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20120925

Year of fee payment: 10

Ref country code: SE

Payment date: 20120925

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20120924

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20121102

Year of fee payment: 10

Ref country code: FR

Payment date: 20121011

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20120917

Year of fee payment: 10

REG Reference to a national code

Ref country code: NL

Ref legal event code: V1

Effective date: 20140401

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130912

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20130911

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50308589

Country of ref document: DE

Effective date: 20140401

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20140530

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130911

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130911

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140401

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140401

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130930