EP1407821A2 - Centrifuge with emergency-stop-system comprising solid particle feeding - Google Patents
Centrifuge with emergency-stop-system comprising solid particle feeding Download PDFInfo
- Publication number
- EP1407821A2 EP1407821A2 EP03020652A EP03020652A EP1407821A2 EP 1407821 A2 EP1407821 A2 EP 1407821A2 EP 03020652 A EP03020652 A EP 03020652A EP 03020652 A EP03020652 A EP 03020652A EP 1407821 A2 EP1407821 A2 EP 1407821A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- centrifuge
- particles
- balls
- emergency stop
- centrifuge according
- 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.)
- Granted
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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 a separator with a vertical axis of rotation, which has a centrifugal drum with a feed pipe for centrifuged material and is provided with outlet nozzles, the centrifugal drum being an emergency stop system is connected upstream.
- the invention further relates to a method for implementation 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, DE 651 907 C is known.
- a separator from Switch off manually or automatically Unbalance can result from one-sided clogging individual nozzles are caused, because in these areas the solid is no longer is carried out.
- the centrifugal drum may continue to rotate for several minutes until it comes to a standstill, after activating the emergency stop function, the liquid is fed into the centrifugal drum until it stops, so that the negative effect of the unbalance is not caused by the empty running of the nozzle drum (Loss of balancing fluid) intensified.
- the emergency stop tank must therefore hold up to 10m 3 of water, for example.
- the invention solves this problem with regard to the centrifuge by the object of claim 1 and with respect to the method by the subject of the claim 12th
- the emergency stop system has a supply system for particles, in particular Bullets in the centrifugal drum.
- the invention also provides a method to implement an emergency stop function of a centrifuge, in which in the Centrifugal drum particles, in particular balls, are passed through the outlet nozzles clog.
- the drum In the event of an emergency stop, the drum is separated by the solid particles or particles, in particular Balls stopped briefly with little or no water added or "shutdown". Since the centrifugal drum can no longer run empty, reduces the risk of "increasing unbalance forces" which occurs when an existing one Imbalance the centrifugal drum is emptied at high speed, as this the influence of the unbalance on the centrifugal drum is increased because the balancing The effect of the product or water is eliminated.
- the solids discharge is particularly preferably provided with outlet nozzles and the balls have a larger diameter than the outlet nozzles.
- the container with the balls can be much smaller, especially in this variant be dimensioned and is also cheaper than the water tank of the State of the art, since only so many balls are necessary that the outlet nozzles get clogged.
- the centrifugal drum must be opened after the emergency stop system has been activated to remove the particles, especially spheres. This opening is but in the event of an emergency stop due to imbalance i. generally required anyway, so that in Usually no additional effort by removing the balls from the centrifugal drum arises.
- the particles, in particular spheres, unite have at least 5% larger diameter than the outlet nozzles.
- the particles in particular spheres, can be made of rubber or plastic or else advantageously to avoid hygiene problems or the like from dried and possibly pressed solid of the centrifuged material to be processed.
- the particles are preferably introduced into the centrifugal drum under pressure.
- Fig. 1 shows a centrifuge designed as a separator 1 with a vertical axis of rotation, which a centrifugal drum 2 - a nozzle drum - having a hood 3 is surrounded.
- the centrifugal drum 2 here has one guided into the centrifugal drum 2 from above Supply pipe 4 for centrifuged goods, which opens into a distributor 5, from which the Spin material is passed into the centrifugal chamber 6 of the centrifugal drum 2.
- a supply line from below through the spindle into a distributor is also conceivable.
- the spindle acts as an inlet pipe.
- the solids discharge is realized through the outlet nozzles 7, which are distributed around the circumference of the centrifugal drum 2 (or e.g. in one Piston slide can be formed) and through which the solid in one Solids catcher 8 and from there is passed into a discharge channel 9.
- the Liquid outlet is provided here with a peeling disc 10, which in a Derivation 11 opens.
- a feed line 12 is connected upstream of the feed pipe 4, which is above the centrifugal drum 2 is arranged.
- the feed line opens a branch pipe 13, which with a Valve 14 is provided - the valve 14 is thus upstream of the supply pipe - and the end facing away from the supply line 13 into a container 15 for receiving of particles, especially spheres 16, e.g. made of rubber, which one have a larger diameter than the outlet nozzles 7.
- spheres 16 e.g. made of rubber
- valve 14 opened so that the balls 16 (e.g. by means of water pressure or a Piston - under pressure from the container 15 through the branch pipe 13 with the valve 14 - e.g.
- a prestressed container 15 is also conceivable (e.g. by means of a air operated piston or the like). The particular advantage is that the Function is retained even in the event of a power failure.
- the balls can also be in the container float in a carrier liquid such as water to feed it into the separator to facilitate.
- centrifugal drum 2 Since the centrifugal drum 2 can no longer run empty in this state, the Reduces the risk of "rising unbalance forces", which occurs when an existing one Imbalance, the centrifugal drum 2 is emptied at high speed, as this the influence of the unbalance on the centrifugal drum 2 is increased.
- the container 15 with the balls 16 can be dimensioned much smaller and is in this respect also cheaper than the water tank of the prior art.
Landscapes
- Centrifugal Separators (AREA)
Abstract
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 a separator with a vertical axis of rotation, which has a centrifugal drum with a feed pipe for centrifuged material and is provided with outlet nozzles, the centrifugal drum being an emergency stop system is connected upstream. The invention further relates to a method for implementation an emergency stop function of a centrifuge.
Eine gattungsgemäße Zentrifuge in Form eines Separators mit vertikaler Drehachse nach dem Oberbegriff des Anspruches 1 ist 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, DE 651 907 C is known.
Die DE 33 20 152, die gattungsfremd ist, zeigt ein Rückschlagventil mit einer an einer Feder angeordneten Kugel.DE 33 20 152, which is foreign to the genus, shows a check valve with one on one Spring arranged ball.
Aus der DE 2 046 274 A ist es ferner bekannt, im Notfall bei größerer Unwucht Auslaßöffnungen einer Zentrifuge zu verschließen.From DE 2 046 274 A it is also known, in an emergency with larger imbalance, outlet openings 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.For example, due to the occurrence of unbalance, a separator from Switch off manually or automatically. Unbalance can result from one-sided clogging individual nozzles are caused, because in these areas the solid is no longer is carried out. It is known e.g. one designed as a separator with a vertical axis of rotation Centrifuge with a nozzle drum, above which to implement a Emergency stop system an emergency stop container opening into the inlet of the separator Intake of a liquid such as water is arranged.
Im Not-Aus-Fall wird der Produktzulauf in der Regel gestoppt und auf Wasser umgeschaltet, um Verluste zu vermeiden.In the event of an emergency stop, 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 several minutes until it comes to a standstill, after activating the emergency stop function, the liquid is fed into the centrifugal drum until it stops, so that the negative effect of the unbalance is not caused by the empty running of the nozzle drum (Loss of balancing fluid) intensified. The emergency stop tank must therefore hold up to 10m 3 of water, for example.
Nachteilig sind insofern insbesondere der relativ große Platzbedarf des Not-Aus-Behälters und dessen relativ hohe Kosten.In this respect, the relatively large space requirement of the emergency stop container is particularly disadvantageous and its relatively high cost.
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 problem with regard to the centrifuge by the object of claim 1 and with respect to the method by the subject of the claim 12th
Vorteilhafte Ausgestaltungen sind den Unteransprüchen zu entnehmen.Advantageous configurations can be found in the subclaims.
Nach der Erfindung weist das Not-Aus-System ein Zuführsystem für 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 particles, in particular Bullets in the centrifugal drum. The invention also provides a method to implement an emergency stop function of a centrifuge, in which in the Centrifugal drum particles, in particular balls, are passed through the outlet nozzles clog.
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 event of an emergency stop, the drum is separated by the solid particles or particles, in particular Balls stopped briefly with little or no water added or "shutdown". Since the centrifugal drum can no longer run empty, reduces the risk of "increasing unbalance forces" which occurs when an existing one Imbalance the centrifugal drum is emptied at high speed, as this the influence of the unbalance on the centrifugal drum is increased because the balancing The effect of the product or water is eliminated.
Besonders bevorzugt ist der Feststoffaustrag mit Auslassdüsen versehen und die Kugeln weisen einen größeren Durchmesser als die Auslassdüsen auf.The solids discharge is particularly preferably 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 much smaller, especially in this variant be dimensioned and is also cheaper than the water tank of the State of the art, since only so many balls are necessary that the outlet nozzles get clogged.
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.The centrifugal drum must be opened after the emergency stop system has been activated to remove the particles, especially spheres. This opening is but in the event of an emergency stop due to imbalance i. generally required anyway, so that in Usually no additional effort by removing the balls from the centrifugal drum arises.
Als vorteilhaft hat es sich herausgestellt, wenn die Teilchen, insbesondere Kugeln einen um wenigstens 5% größeren Durchmesser als die Auslassdüsen aufweisen.It has proven to be advantageous if the particles, in particular spheres, unite have at least 5% larger diameter 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, can be made of rubber or plastic or else advantageously to avoid hygiene problems or the like from dried and possibly pressed solid of the centrifuged material to be processed.
Bevorzugt werden die Teilchen unter Druck in die Schleudertrommel eingeleitet. The particles are preferably introduced into the centrifugal drum under pressure.
Nachfolgend wird die Erfindung anhand von Ausführungsbeispielen unter Bezug auf die Zeichnung näher beschrieben. Es zeigt:
- Fig. 1
- einen erfindungsgemäßen Separator.
- 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
a centrifugal drum 2 - a nozzle drum - having a
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 here has one guided into the centrifugal drum 2 from above
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.To discharge the centrifuged material from the nozzle drum 2 there is at least one solids discharge
for a more solid phase and at least one liquid discharge for a more liquid one
Phase provided. The solids discharge is realized through the
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. A
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.e. when an "emergency stop signal" is present or when an emergency operation is carried out
by hand e.g. due to a registered unbalance of the centrifugal drum 2 -
the
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 Reduces the risk of "rising unbalance forces", which occurs when an existing one Imbalance, the centrifugal drum 2 is emptied at high speed, as this the influence of the unbalance on the centrifugal drum 2 is increased.
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
- 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)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10247646 | 2002-10-11 | ||
DE10247646A DE10247646B4 (en) | 2002-10-11 | 2002-10-11 | Centrifuge with emergency stop system |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1407821A2 true EP1407821A2 (en) | 2004-04-14 |
EP1407821A3 EP1407821A3 (en) | 2005-09-21 |
EP1407821B1 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) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
Families Citing this family (5)
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 |
Citations (1)
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 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
-
2002
- 2002-10-11 DE DE10247646A patent/DE10247646B4/en not_active Expired - Fee Related
-
2003
- 2003-09-11 EP EP03020652A patent/EP1407821B1/en not_active Expired - Fee Related
- 2003-09-11 DE DE50308589T patent/DE50308589D1/en not_active Expired - Lifetime
- 2003-09-30 US US10/673,233 patent/US7056272B2/en not_active Expired - Fee Related
- 2003-10-14 JP JP2003353872A patent/JP2004276013A/en active Pending
Patent Citations (1)
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 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
US12007132B2 (en) | 2017-09-29 | 2024-06-11 | Integrated Global Services, Inc. | Safety shutdown systems and methods for LNG, crude oil refineries, petrochemical plants, and other facilities |
Also Published As
Publication number | Publication date |
---|---|
DE10247646A1 (en) | 2004-04-22 |
US7056272B2 (en) | 2006-06-06 |
EP1407821A3 (en) | 2005-09-21 |
US20040072666A1 (en) | 2004-04-15 |
JP2004276013A (en) | 2004-10-07 |
EP1407821B1 (en) | 2007-11-14 |
DE50308589D1 (en) | 2007-12-27 |
DE10247646B4 (en) | 2004-08-19 |
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