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EP1949966A1 - Solid wall helical centrifuge with pressure plate - Google Patents

Solid wall helical centrifuge with pressure plate Download PDF

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Publication number
EP1949966A1
EP1949966A1 EP08001302A EP08001302A EP1949966A1 EP 1949966 A1 EP1949966 A1 EP 1949966A1 EP 08001302 A EP08001302 A EP 08001302A EP 08001302 A EP08001302 A EP 08001302A EP 1949966 A1 EP1949966 A1 EP 1949966A1
Authority
EP
European Patent Office
Prior art keywords
screw
blade
baffle plate
solid bowl
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
Application number
EP08001302A
Other languages
German (de)
French (fr)
Other versions
EP1949966B1 (en
Inventor
Martin Dr.-Ing. Overberg
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
GEA Westfalia Separator GmbH
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 GEA Westfalia Separator GmbH, Westfalia Separator GmbH filed Critical GEA Westfalia Separator GmbH
Publication of EP1949966A1 publication Critical patent/EP1949966A1/en
Application granted granted Critical
Publication of EP1949966B1 publication Critical patent/EP1949966B1/en
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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
    • B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
    • B04B2001/2041—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl with baffles, plates, vanes or discs attached to the conveying screw

Definitions

  • the invention relates to a solid bowl screw centrifuge with a baffle plate according to the preamble of claim 1.
  • baffles With solid bowl centrifuges, the use of baffles causes a build-up effect that affects the flow in the axial direction. In addition to this desired effect, there is also an influence on the flow in the circumferential direction.
  • the solids cake In order to achieve effective conveying of the solids which form a solids cake with the screw, it is necessary for the solids cake not to rotate with respect to the drum, but to glide as close to it as possible. Between the solids cake and the screw only a relative movement in the circumferential direction is fed.
  • the invention has the object to solve the problem described above with simpler design means.
  • the at least one or the window-like openings bring several advantages with it.
  • the measure is structurally particularly simple to implement and inexpensive.
  • the snail extends on either side of the baffle plate so that it is cut by it.
  • FIG. 3 shows a known solid bowl screw centrifuge with a rotatable drum 1 with horizontal axis of rotation D.
  • a rotatable with a differential speed to the drum 1 screw 2 is arranged, which has a helical screw blade 3, which is arranged on the outer circumference of a screw body 4.
  • An inlet pipe 5 serves to feed a product to be processed via a distributor 6 into the drum 1.
  • At least one liquid outlet 7 and a solids discharge 8 serve to discharge at least one liquid phase and at least one solid phase.
  • baffle plate 9 On the worm body 4, at least one baffle plate 9 is arranged in addition to the screw 3, which is formed from a substantially completely around the worm body 4 circumferential ring or disc element here.
  • the baffle plate 9 intersects in at least one peripheral region with the baffle plate 9, wherein wedge-shaped regions 10, 13 are formed between the baffle plate 9 and the screw blade 3.
  • first wedge region 10 In the flow direction of the solids to the solids discharge axially "first" wedge region 10 according to the invention at least one window-like opening 11, preferably in the screw blade 3, formed, which allows a flow of material through the Scheckenblatt 3.
  • a corresponding window-like opening 12 may be provided in a further wedge area 13, which is formed on the other side of the baffle plate 9 in the region in which it meets the worm blade 3.
  • Each of the apertures 11, 12 is preferably formed such that in each case a web of material 14, 15 and 16, 17 of the screw blade 3 is still standing on the inner and / or outer circumference of the screw body 4.
  • the outer material webs 14, 15 may be reinforced by welds or the like. To strengthen the construction and to avoid imbalances by higher mass in this area.
  • the openings 11, 12 can also start directly on the outer circumference of the screw body and / or enforce it radially completely outwards.
  • the distance of the edge of the apertures 10, 11 to the baffle plate should be particularly preferred 0 mm, preferably less than 10 mm.

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  • Centrifugal Separators (AREA)

Abstract

The centrifuge has a rotary drum and a screw rotated to the rotary drum at a rotational speed difference and arranged in the rotary drum. The screw has a helical screw blade (3) arranged at an outer circumference of a screw body. A pressure plate is arranged on the screw body and coincides in a region with the screw blade so that a wedge area (13) is formed between the pressure plate and the screw blade. A window-like recess (11) is formed in the screw blade in the wedge area to ensure flow of material through the screw blade.

Description

Die Erfindung betrifft eine Vollmantel-Schneckenzentrifuge mit einer Stauscheibe nach dem Oberbegriff des Anspruchs 1.The invention relates to a solid bowl screw centrifuge with a baffle plate according to the preamble of claim 1.

Bei Vollmantel-Schneckenzentrifugen wird durch den Einsatz von Stauscheiben ein Aufstaueffekt bewirkt, der die Strömung in axialer Richtung betrifft. Neben diesem an sich gewünschten Effekt kommt es auch zu einer Beeinflussung der Strömung in Umfangsrichtung. Um eine effektive Förderung der Feststoffe, die einen Feststoffkuchen ausbilden, mit der Schnecke zu erreichen, ist es erforderlich, dass sich der Feststoffkuchen nicht gegenüber der Trommel dreht sondern möglichst an ihr gleitet. Zwischen dem Feststoffkuchen und der Schnecke findet nur eine Relativbewegung in Umfangsrichtung satt.With solid bowl centrifuges, the use of baffles causes a build-up effect that affects the flow in the axial direction. In addition to this desired effect, there is also an influence on the flow in the circumferential direction. In order to achieve effective conveying of the solids which form a solids cake with the screw, it is necessary for the solids cake not to rotate with respect to the drum, but to glide as close to it as possible. Between the solids cake and the screw only a relative movement in the circumferential direction is fed.

Bekannte Schneckenzentrifugen zeigen die FR 543072 , die DE 101 25096 A1 , die US 4,245,777 und die DE 4408 717 A1 .Known screw centrifuges show the FR 543072 , the DE 101 25096 A1 , the US 4,245,777 and the DE 4408 717 A1 ,

Nach der in Fig. 2 und 3 dargestellten bekannten Konstruktion kommt es in bestimmten Winkelbereichen der Schnecke zwangsläufig zur Mitnahme des Feststoffkuchens ("Rundläufer") in einem keilförmigen Bereich "A", in welchem die Stauscheibe und das Schneckenblatt bzw. die Schneckenwendel in Förderrichtung zusammentreffen und in dem im Betrieb relativ hohe Kräfte auftreten. Die Drehrichtung der Schnecke ist mit U bezeichnet. Mit den Pfeilen P1 ist angedeutet, wie die Stauscheibe überströmt wird. Die Pfeile P2 bezeichnen dagegen die Relativströmung gegenüber der Schnecke in weiter Entfernung von der Stauscheibe.After the in Fig. 2 and 3 shown known construction occurs in certain angular ranges of the screw inevitably entrainment of the solid cake ("rotary") in a wedge-shaped region "A", in which the baffle plate and the screw blade or the screw helix meet in the conveying direction and in the relatively high forces during operation occur. The direction of rotation of the screw is designated by U. The arrows P 1 indicate how the baffle plate is overflowed. By contrast, the arrows P 2 denote the relative flow with respect to the screw at a considerable distance from the baffle plate.

Inder gattungsgemäßen WO 02/05966 A2 wird zur Lösung dieses Problem vorgeschlagen, in dem Keilbereich ein Blech anzuordnen.In the generic WO 02/05966 A2 is proposed to solve this problem, to arrange a sheet in the wedge area.

Die Erfindung hat die Aufgabe, das vorstehend beschriebene Problem mit einfacheren konstruktiven Mitteln zu beheben.The invention has the object to solve the problem described above with simpler design means.

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

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

Der wenigstens eine oder die fensterartigen Durchbrüche bringen gleich mehrere Vorteile mit sich.The at least one or the window-like openings bring several advantages with it.

So wird auf einfache Weise die Ansammlung von Feststoffen im Keil vermieden. Hierdurch wird das aufzubringende Schneckendrehmoment verringert, was auch in einer geringeren Stromaufnahme resultiert. U.U. sind sogar kleinere Getriebe zwischen Antriebsmotor (nicht dargestellt) und Schnecke einsetzbar.This easily avoids the accumulation of solids in the wedge. As a result, the worm torque to be applied is reduced, which also results in a lower power consumption. U.U. even smaller gears between the drive motor (not shown) and worm can be used.

Darüber hinaus ergibt sich eine geringere mechanische Belastung der Wendel und sogar ein geringerer Verschleiß der Trommel im Bereich der Stauscheibe.In addition, there is a lower mechanical load on the coil and even less wear of the drum in the baffle plate.

Darüber hinaus ist die Maßnahme konstruktiv besonders einfach umzusetzen und kostengünstig.In addition, the measure is structurally particularly simple to implement and inexpensive.

Insgesamt werden die Verfahrenwerte verbessert.Overall, the process values are improved.

Die Schnecke erstreckt sich jeweils auf beiden Seiten der Stauscheibe, so dass sie von ihr geschnitten wird.The snail extends on either side of the baffle plate so that it is cut by it.

Wird eine mehrgängige Schnecke eingesetzt, sind mehrere Schneckenblätter vorhanden, wobei die Stauscheibe dann beide Schneckengänge schneidet.If a multi-start screw is used, several screw blades are present, whereby the baffle plate then cuts both screw threads.

In der DE 101 25096 A1 wird zwar vorgeschlagen, in die Schnecke Bohrungen einzubringen, welche ein Rückströmen einer Flüssigkeit erlaube. Die Bohrungen sind aber zur Stauscheibe beabstandet.In the DE 101 25096 A1 Although it is proposed to introduce holes in the screw, which allows a backflow of a liquid. The holes are but spaced from the baffle plate.

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

Fig. 1a
eine Draufsicht auf einen Bereich einer Schnecke einer erfindungsgemäßen Vollmantel-Schneckenzentrifuge;
Fig. 1b
einen Schnitt senkrecht zur Drehachse durch die Vollmantel-Schneckenzentrifuge aus Fig. 1a; und
Fig. 2a
eine Draufsicht auf einen Bereich einer Schnecke einer bekannten Vollmantel-Schneckenzentrifuge;
Fig. 2b
einen Schnitt senkrecht zur Drehachse durch die Vollmantel-Schneckenzentrifuge aus Fig. 2a; und
Fig. 3
eine schematische Darstellung einer Vollmantel-Schneckenzentrifuge nach dem Stand der Technik.
The invention will be described in more detail with reference to the drawing with reference to an embodiment. It shows:
Fig. 1a
a plan view of a portion of a screw of a solid bowl screw centrifuge according to the invention;
Fig. 1b
a section perpendicular to the axis of rotation through the solid bowl screw centrifuge Fig. 1a ; and
Fig. 2a
a plan view of a portion of a screw of a known solid bowl screw centrifuge;
Fig. 2b
a section perpendicular to the axis of rotation through the solid bowl screw centrifuge Fig. 2a ; and
Fig. 3
a schematic representation of a solid bowl screw centrifuge according to the prior art.

Figur 3 zeigt eine bekannte Vollmantel-Schneckenzentrifuge mit einer drehbaren Trommel 1 mit horizontaler Drehachse D. In der Trommel 1 ist eine mit einer Differenzdrehzahl zur Trommel 1 drehbare Schnecke 2 angeordnet, die ein wendelartiges Schneckenblatt 3 aufweist, dass am Außenumfang eines Schneckenkörpers 4 angeordnet ist. FIG. 3 shows a known solid bowl screw centrifuge with a rotatable drum 1 with horizontal axis of rotation D. In the drum 1 a rotatable with a differential speed to the drum 1 screw 2 is arranged, which has a helical screw blade 3, which is arranged on the outer circumference of a screw body 4.

Ein Zulaufrohr 5 dient zur Zuleitung eines zu verarbeitenden Produktes über einen Verteiler 6 in die Trommel 1. Wenigstens ein Flüssigkeitsablauf 7 und ein Feststoffaustrag 8 dienen zum Austrag wenigstens einer Flüssigkeits- und wenigstens einer Feststoffphase.An inlet pipe 5 serves to feed a product to be processed via a distributor 6 into the drum 1. At least one liquid outlet 7 and a solids discharge 8 serve to discharge at least one liquid phase and at least one solid phase.

Auf dem Schneckenkörper 4 ist ergänzend zur Schnecke 3 wenigstens eine Stauscheibe 9 angeordnet, die aus einem hier im wesentlichen vollständig um den Schneckenkörper 4 umlaufenden Ring bzw. Scheibenelement gebildet wird. Die Stauscheibe 9 kreuzt sich in wenigstens einem Umfangsbereich mit der Stauscheibe 9, wobei keilförmige Bereiche 10, 13 zwischen der Stauscheibe 9 und dem Schneckenblatt 3 gebildet werden.On the worm body 4, at least one baffle plate 9 is arranged in addition to the screw 3, which is formed from a substantially completely around the worm body 4 circumferential ring or disc element here. The baffle plate 9 intersects in at least one peripheral region with the baffle plate 9, wherein wedge-shaped regions 10, 13 are formed between the baffle plate 9 and the screw blade 3.

Die Drehrichtung der Schnecke wird wiederum mit U bezeichnet und mit den Pfeilen P2 die Relativströmung gegenüber der Schnecke in weiter Entfernung von der Stauscheibe.The direction of rotation of the screw is again denoted by U and the arrows P 2, the relative flow relative to the screw at a distance from the baffle plate.

In dem in Strömungsrichtung der Feststoffe zum Feststoffaustrag axial "ersten" Keilbereich 10 ist erfindungsgemäß wenigstens ein fensterartiger Durchbruch 11, vorzugsweise in dem Schneckenblatt 3, ausgebildet, welcher einen Durchfluss von Material durch das Scheckenblatt 3 ermöglicht.In the flow direction of the solids to the solids discharge axially "first" wedge region 10 according to the invention at least one window-like opening 11, preferably in the screw blade 3, formed, which allows a flow of material through the Scheckenblatt 3.

Derart bleibt die Funktion der Stauscheibe 9 erhalten. Es wird aber vermieden, dass im Keilbereich 10 zu hohe Kräfte auftreten. Da die Schnecke 3 durchströmt werden kann, findet in dem Keilbereich 10 keine Ansammlung von Feststoffen mehr statt.Thus, the function of the baffle plate 9 is maintained. However, it is avoided that too high forces occur in the wedge area 10. Since the screw 3 can be flowed through, no accumulation of solids takes place in the wedge region 10.

Ein entsprechender fensterartiger Durchbruch 12 kann in einem weiteren Keilbereich 13 vorgesehen sein, der auf der anderen Seite der Stauscheibe 9 in dem Bereich ausgebildet ist, in dem sie auf das Schneckenblatt 3 trifft.A corresponding window-like opening 12 may be provided in a further wedge area 13, which is formed on the other side of the baffle plate 9 in the region in which it meets the worm blade 3.

Auch hier wird durch die Durchströmung eine Herabsetzung der auftretenden Kräfte erreicht.Again, a reduction of the forces occurring is achieved by the flow.

Jeder der Durchbrüche 11, 12 wird vorzugsweise derart ausgebildet, dass am Innen- und/oder Außenumfang des Schneckenkörpers 4 jeweils noch ein Materialsteg 14, 15 und 16, 17 des Schneckenblattes 3 stehen bleibt.Each of the apertures 11, 12 is preferably formed such that in each case a web of material 14, 15 and 16, 17 of the screw blade 3 is still standing on the inner and / or outer circumference of the screw body 4.

Die äußeren Materialstege 14, 15 können durch Aufschweißungen oder dgl. verstärkt sein, um die Konstruktion zu stärken und um durch höhere Masse in diesem Bereich Unwuchten zu vermeiden.The outer material webs 14, 15 may be reinforced by welds or the like. To strengthen the construction and to avoid imbalances by higher mass in this area.

Die Durchbrüche 11, 12 können aber auch direkt am Außenumfang des Schneckenkörpers ansetzen und/oder es radial vollständig nach außen hin durchsetzen.However, the openings 11, 12 can also start directly on the outer circumference of the screw body and / or enforce it radially completely outwards.

Vorzugweise grenzt der/grenzen die Durchbrüche 11, 12 ferner in Umfangsrichtung jeweils direkt an den jeweiligen Bereich 18, 19 an, in dem die Stauscheibe 9 mit dem Schneckenblatt 3 zusammentrifft. D.h., die Stauscheibe selbst bildet dann einen Teil des Randes der Durchbrüche 11, 12. Dies wird besonders bevorzugt, denn ist die Wirkung der Durchbrüche ist hier besonders vorteilhaft. Insgesamt sollte der Abstand des Randes der Durchbrüche 10, 11 zur Stauscheibe insofern besonders bevorzugt 0 mm, vorzugsweise weniger als 10 mm betragen.Preferably, the / limits the openings 11, 12 further in the circumferential direction each directly to the respective area 18, 19, in which the baffle plate 9 coincides with the screw blade 3. That is, the baffle plate itself forms part of the edge of the apertures 11, 12. This is particularly preferred because the effect of the openings is particularly advantageous here. Overall, the distance of the edge of the apertures 10, 11 to the baffle plate should be particularly preferred 0 mm, preferably less than 10 mm.

Bezugszeichenreference numeral

Trommeldrum
11
Schneckeslug
22
Schneckenblattscrew blade
33
Schneckenkörperscrew body
44
Zulaufrohrsupply pipe
55
Verteilerdistributor
66
Flüssigkeitsablaufliquid drain
77
Feststoffaustragsolids
88th
Stauscheibebaffle plate
99
Bereicheareas
10, 1310, 13
Durchbrüchebreakthroughs
11,1211.12
Materialstegematerial webs
14, 15, 16, 1714, 15, 16, 17
Bereicheareas
18, 1918, 19
Drehachseaxis of rotation
DD
Drehrichtung der SchneckeDirection of rotation of the screw
UU
Pfeilearrows
P1, P2 P 1 , P 2

Claims (8)

Vollmantel-Schneckenzentrifuge mit a. einer drehbaren Trommel (1) und einer in der Trommel (1) angeordneten, mit einer Differenzdrehzahl zur Trommel (1) drehbaren Schnecke (2), die wenigstens ein wendelartiges Schneckenblatt (3) aufweist, dass am Außenumfang eines Schneckenkörpers (4) angeordnet ist, b. und mit wenigstens einer auf dem Schneckenkörper (4) angeordneten Stauscheibe (9), die in wenigstens einem Bereich (19, 18) mit dem Schneckenblatt (3) zusammentrifft, so dass wenigstens ein keilförmiger Bereich (10, 13) zwischen der Stauscheibe (9) und dem Schneckenblatt (3) ausgebildet ist,
dadurch gekennzeichnet, dass c. in dem wenigstens einen Keilbereich (10) wenigstens ein fensterartiger Durchbruch (11) in dem Schneckenblatt (3) ausgebildet ist, der einen Durchfluss von Material durch das Scheckenblatt (3) ermöglicht. Solid bowl centrifuge with a. a rotatable drum (1) and a in the drum (1) arranged, with a differential speed to the drum (1) rotatable screw (2) having at least one helical screw blade (3) that on the outer circumference of a screw body (4) is arranged . b. and with at least one baffle plate (9) arranged on the worm body (4), which meets the worm blade (3) in at least one area (19, 18), so that at least one wedge-shaped area (10, 13) between the baffle plate (9 ) and the screw blade (3) is formed,
characterized in that c. in that at least one wedge area (10) has at least one window-like opening (11) in the worm blade (3), which allows a flow of material through the wattle blade (3). Vollmantel-Schneckenzentrifuge nach Anspruch 1, dadurch gekennzeichnet, dass der wenigstens eine Durchbruch oder die Durchbrüche (11, 12) in Umfangsrichtung jeweils direkt an den jeweiligen Bereich (18, 19) angrenzt/angrenzen, in dem die Stauscheibe (9) mit dem Schneckenblatt (3) zusammentrifft.A solid bowl centrifuge according to claim 1, characterized in that the at least one aperture or apertures (11, 12) in the circumferential direction each directly adjacent to the respective region (18, 19) in which the baffle plate (9) with the screw blade (3) meets. Vollmantel-Schneckenzentrifuge nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Stauscheibe in zwei Bereichen (19, 18) auf das Schneckenblatt (3) trifft und dass auf beiden Seiten der Stauscheibe (9) jeweils in den beiden keilförmigen Bereichen (10, 13) einer der fensterartigen Durchbrüche, (11, 12) im Schneckenblatt ausgebildet ist.A solid bowl centrifuge according to claim 1 or 2, characterized in that the baffle plate in two areas (19, 18) on the screw blade (3) and that on both sides of the baffle plate (9) in each of the two wedge-shaped areas (10, 13 ) One of the window-like openings (11, 12) is formed in the screw blade. Vollmantel-Schneckenzentrifuge nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass der wenigstens eine Durchbruch (11, 12) derart ausgebildet ist, dass am Innenumfang des Schneckenkörpers (3) ein Materialsteg (16, 17) des Schneckenblattes (3) stehen bleibt.Solid bowl centrifuge according to one of the preceding claims, characterized in that the at least one aperture (11, 12) is formed such that on the inner circumference of the screw body (3) a material web (16, 17) of the screw blade (3) stops. Vollmantel-Schneckenzentrifuge nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass der wenigstens eine Durchbruch (11, 12) derart ausgebildet ist, dass am Außenumfang des Schneckenkörpers (3) ein Materialsteg (14, 15) des Schneckenblattes (3) stehen bleibt.A solid bowl screw centrifuge according to one of the preceding claims, characterized in that the at least one opening (11, 12) is designed such that a material web (14, 15) of the screw blade (3) stops at the outer circumference of the screw body (3). Vollmantel-Schneckenzentrifuge nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die äußeren Materialstege (14, 15) verstärkt ausgelegt sind.Solid bowl screw centrifuge according to one of the preceding claims, characterized in that the outer material webs (14, 15) are designed reinforced. Vollmantel-Schneckenzentrifuge nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Durchbrüche (11, 12) direkt am Außenumfang des Schneckenkörpers (4) ansetzen.Solid bowl screw centrifuge according to one of the preceding claims, characterized in that the openings (11, 12) attach directly to the outer circumference of the screw body (4). Vollmantel-Schneckenzentrifuge nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Durchbrüche (11, 12) direkt am Außenumfang des Schneckenkörpers (4) ansetzen und das Schneckenblatt (3) radial vollständig durchsetzen.A solid bowl screw centrifuge according to one of the preceding claims, characterized in that the apertures (11, 12) attach directly to the outer circumference of the screw body (4) and fully penetrate the screw blade (3) radially.
EP08001302.2A 2007-01-26 2008-01-24 Solid wall helical centrifuge with pressure plate Active EP1949966B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007003928A DE102007003928A1 (en) 2007-01-26 2007-01-26 Solid bowl centrifuge with a baffle plate

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Publication Number Publication Date
EP1949966A1 true EP1949966A1 (en) 2008-07-30
EP1949966B1 EP1949966B1 (en) 2016-05-04

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010097327A1 (en) 2009-02-20 2010-09-02 Hiller Gmbh Solid bowl screw centrifuge having coarse material outlet in baffle plate
CN109225668A (en) * 2018-09-26 2019-01-18 苏州星亿机械有限公司 Horizontal spiral discharge sedimentation centrifuge
CN113374613A (en) * 2021-06-10 2021-09-10 合肥新沪屏蔽泵有限公司 Turbine pipeline pump

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BE543072A (en)
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DE4408717A1 (en) 1994-03-15 1995-09-21 Metallgesellschaft Ag Composite element for coating the tip of screw feeder blades
WO1997022411A1 (en) * 1995-12-18 1997-06-26 Alfa Laval Separation A/S A decanter centrifuge
WO2002005966A2 (en) 2000-07-14 2002-01-24 Alfa Laval Inc. Decanter centrifuge having a heavy phase solids baffle
DE10125096A1 (en) 2001-05-23 2002-11-28 Hiller Gmbh Decanter centrifuge

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CH144065A (en) * 1930-01-24 1930-12-15 Ruesch Friedrich Tool for cutting machine tools.

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE543072A (en)
US4245777A (en) 1979-08-30 1981-01-20 Pennwalt Corporation Centrifuge apparatus
DE4408717A1 (en) 1994-03-15 1995-09-21 Metallgesellschaft Ag Composite element for coating the tip of screw feeder blades
WO1997022411A1 (en) * 1995-12-18 1997-06-26 Alfa Laval Separation A/S A decanter centrifuge
WO2002005966A2 (en) 2000-07-14 2002-01-24 Alfa Laval Inc. Decanter centrifuge having a heavy phase solids baffle
DE10125096A1 (en) 2001-05-23 2002-11-28 Hiller Gmbh Decanter centrifuge

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010097327A1 (en) 2009-02-20 2010-09-02 Hiller Gmbh Solid bowl screw centrifuge having coarse material outlet in baffle plate
DE102009001054A1 (en) 2009-02-20 2010-09-02 Hiller Gmbh Solid bowl centrifuge with coarse outlet
CN109225668A (en) * 2018-09-26 2019-01-18 苏州星亿机械有限公司 Horizontal spiral discharge sedimentation centrifuge
CN113374613A (en) * 2021-06-10 2021-09-10 合肥新沪屏蔽泵有限公司 Turbine pipeline pump
CN113374613B (en) * 2021-06-10 2024-06-04 合肥新沪屏蔽泵有限公司 Turbine pipeline pump

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EP1949966B1 (en) 2016-05-04

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