EP1102637B1 - Method and device for adjusting the liquid content of a solid withdrawn from a self-discharging centrifugal drum of a separator - Google Patents

Method and device for adjusting the liquid content of a solid withdrawn from a self-discharging centrifugal drum of a separator Download PDF

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Publication number
EP1102637B1
EP1102637B1 EP99934572A EP99934572A EP1102637B1 EP 1102637 B1 EP1102637 B1 EP 1102637B1 EP 99934572 A EP99934572 A EP 99934572A EP 99934572 A EP99934572 A EP 99934572A EP 1102637 B1 EP1102637 B1 EP 1102637B1
Authority
EP
European Patent Office
Prior art keywords
centrifugal drum
separator
solid
liquid
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 - Lifetime
Application number
EP99934572A
Other languages
German (de)
French (fr)
Other versions
EP1102637A1 (en
Inventor
Wilfried Mackel
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 EP1102637A1 publication Critical patent/EP1102637A1/en
Application granted granted Critical
Publication of EP1102637B1 publication Critical patent/EP1102637B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • B04B11/04—Periodical feeding or discharging; Control arrangements therefor
    • 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
    • B04B1/04—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls
    • B04B1/08—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls of conical shape

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  • Centrifugal Separators (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

The invention is a method and apparatus for adjusting a liquid content of a liquid and solid mixture withdrawn from a self-discharging centrifugal drum of a separator. The method includes the steps of: feeding a solid and liquid mixture into the separator; rotating the drum; separating the liquid and solid mixture during the rotation; bringing the separator to a halt; aspirating the liquid remaining in the interior of the centrifugal drum until a quantity remains which corresponds to a required consistency of a solid; and emptying the centrifugal drum of the solid with the required consistency from the centrifugal drum at a suitable rotational speed. The apparatus is a separator including: a self-discharging centrifugal drum; withdrawal openings; a solid space and a separating space; a feeding tube; a shutoff element; and a piston-type slide valve. A connection piece for the connection of a suction device is arranged below the shut-off element.

Description

Die Erfindung bezieht sich auf ein Verfahren zum Einstellen des Flüssigkeitsgehalts des aus einer selbstentleerenden Schleudertrommel eines Separators ausgetragenen Feststoffes und betrifft eine Vorrichtung zur Durchführung dieses Verfahrens. Ein gattungsgemäßes Verfahren und eine gattungsgemäß Vorrichtung sind aus der DE 2 220 718 B bekannt.The invention relates to a method for adjusting the Liquid content of a self-emptying centrifugal drum Separator discharged solid and relates to a device for Performing this procedure. A generic method and a generic Devices are known from DE 2 220 718 B.

Bei einigen Produkten ist es erwünscht, daß der aus selbstentleerenden Schleudertrommeln ausgetragene Feststoff einen möglichst hohen Trockensubstanzgehalt besitzt. In diesen Fällen muß vermieden werden, daß beim Ausstoß der Feststoffe aus der Schleudertrommel Flüssigkeit mit dem Feststoff entweicht. Um dies zu erreichen, wird mit der sog. "Teilentleerung" gearbeitet, bei der die Schleudertrommel nur so kurzzeitig geöffnet wird, daß der größte Teil der Feststoffe entweichen kann.With some products it is desirable that the self-draining Solids discharged from centrifugal drums are as high as possible Has dry matter content. In these cases it must be avoided that when ejecting the solids from the centrifugal drum, liquid with the Solid escapes. To achieve this, the so-called "partial emptying" worked, in which the centrifugal drum is opened only for a short time that the most of the solids can escape.

Bei anderen Produkten ist es erwünscht, den Feststoff nicht so trocken wie möglich auszustoßen, sondern mit einem Flüssigkeitsgehalt, der die angestrebte Konsistenz bestimmt.For other products, it is desirable that the solid not be as dry as possible to eject, but with a liquid content that the desired Consistency determined.

Dies ist mit den bekannten Separatoren und ihrer Betriebsweise nicht zu erreichen.This is not the case with the known separators and their mode of operation to reach.

Aus der JP55022315 A ist es bekannt, des Zulaufrohr axial zustellbar auszulegen.From JP55022315 A it is known to design the feed pipe to be axially deliverable.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren und eine Vorrichtung der eingangs genannten Art so zu gestalten, daß vor dem Austragen des Feststoffes aus der Schleudertrommel der die Konsistenz bestimmende Flüssigkeitsgehalt eingestellt werden kann.The invention has for its object a method and an apparatus type mentioned so that before the discharge of the solid the consistency of the liquid content from the centrifugal drum can be adjusted.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß vor der Entleerung des Feststoffes aus der Schleudertrommel der Separator zum Stillstand gebracht, die im Innern der Schleudertrommel verbliebene Flüssigkeit bis auf eine der geforderten Konsistenz des Feststoffes entsprechende Restmenge abgesaugt und anschließend die Entleerung der Schleudertrommel bei geeigneter Drehzahl vorgenommen wird.According to the invention this object is achieved in that before emptying the Solid matter from the centrifugal drum stopped the separator, the Liquid remaining inside the centrifugal drum except for one of the suctioned off the required residual consistency of the solid and then emptying the centrifugal drum at a suitable speed is made.

In vorteilhafter Weise wird zur Absaugung eines Teils der Flüssigkeit aus dem Inneren der Schleudertrommel das für die Zuführung des Feststoff-Flüssigkeits-Gemisches zur Schleudertrommel vorgesehene Einlaufrohr verwendet, das in der Höhe verstellt werden kann und in der unteren Endstellung sich bis in die Nähe des Trommelbodens erstreckt.Advantageously, a part of the liquid is extracted from the Inside the centrifugal drum for the supply of the solid-liquid mixture inlet pipe provided for the centrifugal drum used in the Height can be adjusted and in the lower end position close up of the drum base extends.

Durch einen nach innen und unten geneigten Trommelboden kann beim Stillstand der Schleudertrommel erreicht werden, daß die vorhandene Restflüssigkeit nach innen läuft und sich im Bereich des unteren Endes des zentral angeordneten Einlaufrohres sammelt.A drum base that is inclined inwards and downwards can be used during standstill the centrifugal drum can be reached that the existing residual liquid after runs inside and is located in the area of the lower end of the central Inlet pipe collects.

Aufgrund der axialen Verschiebbarkeit des Einlaufrohres kann das freie Ende bis an die tiefste Stelle des Trommelbodens herangefahren werden, so daß die Flüssigkeit auch nahezu vollständig durch das Einlaufrohr bei abgesperrtem Einlauf abgesaugt werden kann. Ferner ist über den eingestellten Abstand der unteren Öffnung des Einlaufrohres zum Trommelboden eine verbleibende Restflüssigkeitsmenge einstellbar und damit die Konsistenz des ausgetragenen Feststoffes zu beeinflussen.Due to the axial displaceability of the inlet pipe, the free end can be up to be brought up to the lowest point of the drum base, so that the Liquid also almost completely through the inlet pipe when shut off Inlet can be suctioned off. Furthermore, the set distance is bottom opening of the inlet pipe to the drum bottom a remaining Residual liquid quantity adjustable and thus the consistency of the discharged To influence solid matter.

Durch die Verwendung des Einlaufrohres bei abgeschaltetem Einlauf des Feststoff-Flüssigkeits-Gemisches als Saugrohr ergibt sich eine einfache Konstruktion zur Durchführung des Saugbetriebes, um eine gewünschte Flüssigkeitsmenge aus dem Innern der Schleudertrommel abzuziehen.By using the inlet pipe when the inlet of the Solid-liquid mixture as a suction tube results in a simple Construction to carry out the suction operation to a desired Withdraw the amount of liquid from inside the centrifugal drum.

Die zeitweise Verwendung des Einlaufrohres als Saugrohr ist sowohl bei ortsfesten als auch bei mitrotierenden Einlaufrohren möglich.The temporary use of the inlet pipe as a suction pipe is both at stationary as well as with rotating inlet pipes possible.

Weitere Merkmale der Erfindung ergeben sich aus den Unteransprüchen.Further features of the invention emerge from the subclaims.

In der Zeichnung ist eine Schleudertrommel mit ihren wichtigsten Funktionsteilen schematisch im Vertikalschnitt darstellt.In the drawing is a centrifugal drum with its most important functional parts represents schematically in vertical section.

Die Schleudertrommel 1 setzt sich aus dem Unterteil 2, dem Oberteil 3 und einem Verbindungsring 4 zusammen. Im Unterteil 2 ist ein Kolbenschieber 5 gleitbar gelagert und verschließt in der aufgezeigten Betriebslage die auf dem Umfang verteilt angeordneten Austragöffnungen 6 für den Feststoff, der sich während des Betriebs des Separators im Feststoffraum 7 sammelt.The centrifugal drum 1 is composed of the lower part 2, the upper part 3 and a connecting ring 4 together. In the lower part 2 there is a piston slide 5 slidably mounted and closes in the operating position shown on the Circumferentially distributed discharge openings 6 for the solid matter collects in the solid space 7 during operation of the separator.

Die Schleudertrommel weist ferner einen Trennraum 8 auf, in dem ein Tellerpaket angeordnet ist.The centrifugal drum also has a separation space 8 in which a plate pack is arranged.

Die Zuführung des Feststoff-Flüssigkeits-Gemisches erfolgt durch ein Einlaufrohr 9, das im oberen Bereich durch ein Absperrorgan 10 abgesperrt werden kann.The solid-liquid mixture is fed through an inlet pipe 9, which can be shut off in the upper area by a shut-off device 10.

Unterhalb des Absperrorgans 10 zweigt vom Einlaufrohr 9 ein Stutzen 11 ab, in dem ein Absperrventil 12 angeordnet ist und der mit einer nicht dargestellten Saugeinrichtung verbunden ist.Below the shut-off element 10 branches off from the inlet pipe 9, in which a shut-off valve 12 is arranged and with a not shown Suction device is connected.

Das Einlaufrohr 9 kann in axialer Richtung verstellt werden, und zwar mittels einer Stelleinrichtung 13, die in der Zeichnung nur angedeutet ist.The inlet pipe 9 can be adjusted in the axial direction, by means of an actuating device 13, which is only indicated in the drawing.

Der Boden der Schleudertrommel setzt sich aus einer Ringfläche 14 des Kolbenschiebers 5 und einer Ringfläche 15 des Unterteils 2 zusammen. Aus der Darstellung ergibt sich, daß die Flächen 14 und 15 zum Zentrum 16 hin nach innen und unten, also mit einem Gefälle verlaufen, so daß sich beim Stillstand der Schleudertrommel im zentralen unteren Bereich der Schleudertrommel die Restflüssigkeit sammelt. Der Abstand der unteren Öffnung 17 des zeitweise als Saugrohr wirkenden Einlaufrohres 9 kann exakt eingestellt werden, so daß dadurch die Flüssigkeitsmenge bestimmt wird, die in der Schleudertrommel verbleibt und nach dem Wiederanlauf des Separators bei freigegebenen Austragöffnungen 6 zusammen mit dem Feststoff ausgetragen wird. The bottom of the centrifugal drum is composed of an annular surface 14 of the piston valve 5 and an annular surface 15 of the lower part 2 together. From the Illustration shows that the surfaces 14 and 15 towards the center 16 towards inside and below, so with a slope, so that when the Centrifugal drum in the central lower area of the centrifugal drum Residual liquid collects. The distance of the lower opening 17 at times as Intake pipe acting inlet pipe 9 can be adjusted exactly so that thereby determining the amount of liquid in the centrifugal drum remains and released after restarting the separator Discharge openings 6 is discharged together with the solid.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Schleudertrommelcentrifugal drum
22
Unterteillower part
33
Oberteiltop
44
Verbindungsringconnection ring
55
Kolbenschieberspool
66
Austragöffnungdischarge
77
Kolbenschieberspool
88th
Trennraumseparating space
99
Einlaufrohrinlet pipe
1010
Absperrorganshutoff
1111
StutzenSupport
1212
Absperrventilshut-off valve
1313
Stelleinrichtungsetting device
1414
Ringflächering surface
1515
Ringflächering surface
1616
Zentrumcenter
1717
Öffnungopening

Claims (5)

  1. Method for setting the liquid content of the solids discharged from a self-emptying centrifugal drum of a separator, characterized in that, before the solids are emptied, the separator is brought to a standstill, the liquid remaining in the interior of the centrifugal drum (1) is extracted apart from a residual amount corresponding to the required consistency of the solids, and then the emptying of the centrifugal drum (1) is undertaken at a suitable speed.
  2. Method according to Claim 1, characterized in that to extract some of the liquid from the interior of the centrifugal drum (1) use is made of the inlet pipe (9) which is provided for supplying the solid/liquid mixture to the centrifugal drum, can be adjusted axially and extends in the lower end position into the vicinity of the drum bottom (14, 15, 16).
  3. Separator for carrying out the method according to Claim 1 or 2, having a self-emptying centrifugal drum, the discharge openings (6) of which are closed or released by a piston valve (5) and which has a solids space (7) and a separating space (8) equipped with an assembly of plates, and is provided with an inlet pipe (9) for supplying a solid/liquid mixture, the inlet for the liquid/solid mixture being able to be closed by means of a shutoff element (10) and a connection piece (11) for the connection of a suction device being arranged below the shutoff element (10), characterized in that the inlet pipe (9) extends into the vicinity of the drum bottom (14, 15, 16) and can be adjusted in the axial direction, the bottom (14, 15, 16) of the centrifugal drum (1) sloping towards the centre (16) in which the inlet pipe (9) is arranged.
  4. Separator according to Claim 3, characterized in that a shutoff valve (12) is arranged in the connection piece (11) leading to the suction device.
  5. Separator according to Claim 3, characterized in that an adjusting device (13) is assigned to the inlet pipe (9) for the axial adjustment.
EP99934572A 1998-08-04 1999-07-05 Method and device for adjusting the liquid content of a solid withdrawn from a self-discharging centrifugal drum of a separator Expired - Lifetime EP1102637B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19835120 1998-08-04
DE19835120A DE19835120C1 (en) 1998-08-04 1998-08-04 Regulating fluid contents in centrifugal separator outlet
PCT/EP1999/004663 WO2000007733A1 (en) 1998-08-04 1999-07-05 Method and device for adjusting the liquid content of a solid withdrawn from a self-discharging centrifugal drum of a separator

Publications (2)

Publication Number Publication Date
EP1102637A1 EP1102637A1 (en) 2001-05-30
EP1102637B1 true EP1102637B1 (en) 2004-01-28

Family

ID=7876372

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99934572A Expired - Lifetime EP1102637B1 (en) 1998-08-04 1999-07-05 Method and device for adjusting the liquid content of a solid withdrawn from a self-discharging centrifugal drum of a separator

Country Status (7)

Country Link
US (1) US6468198B1 (en)
EP (1) EP1102637B1 (en)
JP (1) JP3448565B2 (en)
AT (1) ATE258464T1 (en)
DE (2) DE19835120C1 (en)
DK (1) DK1102637T3 (en)
WO (1) WO2000007733A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6323180B1 (en) * 1998-08-10 2001-11-27 Boehringer Ingelheim (Canada) Ltd Hepatitis C inhibitor tri-peptides
DE10139466A1 (en) * 2001-08-10 2003-02-20 Bayer Ag Method for separating blood plasma particles from suspensions involves centrifuging to remove particles from fluid phase and sucking off fluid still in drum which is temporarily stopped to discharge sediment
US6706180B2 (en) * 2001-08-13 2004-03-16 Phase Inc. System for vibration in a centrifuge
DE10235067A1 (en) * 2002-07-31 2004-02-12 Knoll Maschinenbau Gmbh Device for separating fluid from mixture of fluid and solids has one emptying opening in bottom of rotatable separating container with fluid emptying in one speed range followed by emptying of solids
US6971525B2 (en) * 2003-06-25 2005-12-06 Phase Inc. Centrifuge with combinations of multiple features
DE102009024029A1 (en) * 2009-06-05 2010-12-09 Winkelhorst, Markus Self-emptying disk separator for separating sludge from suspension in liquid i.e. water, has slide valve including passage openings passing from upper closing position into lower closing position during unidirectional movement of valve
SE535275C2 (en) 2010-03-31 2012-06-12 Alfa Laval Corp Ab Centrifugal separator and rotor
WO2015181177A1 (en) * 2014-05-28 2015-12-03 Gea Mechanical Equipment Gmbh Separator
EP3148701B1 (en) * 2014-05-28 2021-11-24 GEA Mechanical Equipment GmbH Separator
EP4046719A1 (en) * 2021-02-17 2022-08-24 Alfa Laval Corporate AB A centrifugal separator

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1927822A (en) * 1926-02-16 1933-09-26 Merco Centrifugal Separator Co Centrifuge apparatus
FR1031187A (en) * 1950-01-19 1953-06-22 Separator Ab Centrifugal separator for the continuous separation and extraction of solids from a liquid mixture
FR96448E (en) * 1968-01-09 1972-06-30 Alfa Laval Ab Centrifuge.
DE2033646A1 (en) * 1969-07-24 1971-03-11 Alfa Laval AB Tumba (Schweden) Arrangement in a centrifugal separator
DE2220718C2 (en) * 1972-04-27 1973-08-23 Westfalia Separator Ag SELF-CONTROLLING CENTRIFUGAL DRUM FOR CLEARING LIQUIDS
JPS5522315A (en) * 1978-08-03 1980-02-18 Shin Meiwa Ind Co Ltd Centrifugal dehydrator
DE2926237C2 (en) * 1979-06-29 1981-07-02 Westfalia Separator Ag, 4740 Oelde Self-draining clarification drum
SE8405015D0 (en) * 1984-10-08 1984-10-08 Alfa Laval Separation Ab centrifugal
SE503017C2 (en) * 1994-07-22 1996-03-11 Tetra Laval Holdings & Finance Method and apparatus for monitoring centrifugal separator

Also Published As

Publication number Publication date
DK1102637T3 (en) 2004-04-05
WO2000007733A1 (en) 2000-02-17
DE59908431D1 (en) 2004-03-04
EP1102637A1 (en) 2001-05-30
DE19835120C1 (en) 1999-10-21
ATE258464T1 (en) 2004-02-15
US6468198B1 (en) 2002-10-22
JP3448565B2 (en) 2003-09-22
JP2002522205A (en) 2002-07-23

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