DE4308749C1 - Thrust centrifuge having pump wheel rotating with drum - with filler tube for centrifuging material and connected to centrifuge housing - Google Patents

Thrust centrifuge having pump wheel rotating with drum - with filler tube for centrifuging material and connected to centrifuge housing

Info

Publication number
DE4308749C1
DE4308749C1 DE4308749A DE4308749A DE4308749C1 DE 4308749 C1 DE4308749 C1 DE 4308749C1 DE 4308749 A DE4308749 A DE 4308749A DE 4308749 A DE4308749 A DE 4308749A DE 4308749 C1 DE4308749 C1 DE 4308749C1
Authority
DE
Germany
Prior art keywords
pump wheel
centrifuge
guide plate
drum
floor
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
DE4308749A
Other languages
German (de)
Inventor
Siegfried Poeschl
Bruno Hegnauer
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.)
Krauss Maffei Process Technology AG
Original Assignee
Krauss Maffei AG
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 Krauss Maffei AG filed Critical Krauss Maffei AG
Priority to DE9304723U priority Critical patent/DE9304723U1/en
Priority to DE4308749A priority patent/DE4308749C1/en
Priority to CH00451/94A priority patent/CH689155A5/en
Priority to ITRM940143A priority patent/IT1271887B/en
Application granted granted Critical
Publication of DE4308749C1 publication Critical patent/DE4308749C1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B3/00—Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneous sifting or filtering
    • B04B3/02—Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneous sifting or filtering discharging solid particles from the bowl by means coaxial with the bowl axis and moving to and fro, i.e. push-type centrifuges
    • 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
    • B04B11/06—Arrangement of distributors or collectors in centrifuges

Landscapes

  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Materials For Photolithography (AREA)

Abstract

Centrifuge has a pump wheel in the direction of rotation with convex, curved and profiled pump wheel vanes which are arranged between a plate-shaped guide floor and a ring-shaped guide plate. The filler tube issues in the central opening of the pump wheel formed by the guide plate. The pump wheel is fixed to the thrust floor, and the front edges of the profiled pump wheel vanes in cross-section have a rounded formation. The guide plate (8) increasing to the central opening (9) is arched outwards and the rounded formation corresponds to the dia. of the greatest profile thickness of the pump wheel vanes (7). The guide floor of the pump wheel (6) is a component of the thrust floor (5). ADVANTAGE - Centrifuge guarantees an optimal mass throughout through the pump wheel and a satisfactory handling of centrifuge material with sensitive solid material particles. D16

Description

Die Erfindung betrifft eine Schubzentrifuge gemäß Oberbegriff des Anspruchs 1.The invention relates to a push centrifuge according to the preamble of Claim 1.

Eine Zentrifuge dieser Art ist aus der DE-AS 11 97 813 bekannt, bei der das über ein gehäusefestes Füllrohr eingebrachte Schleudergut über ein Pumpenrad verteilt und auf die Winkelgeschwindigkeit der Zentrifugen­ trommel beschleunigt wird. Beim Erfassen des Schleudergutes durch das Pumpenrad können jedoch feste Partikel des Schleudergutes durch die Vorderkanten der profilierten Pumpenradflügel zerstört werden.A centrifuge of this type is known from DE-AS 11 97 813, in which the centrifugal material introduced via a filling tube fixed to the housing via a Pump wheel distributed and on the angular speed of the centrifuges drum is accelerated. When capturing the centrifuged material through the However, the impeller can remove solid particles from the centrifuged material Leading edges of the profiled impeller blades are destroyed.

Der Erfindung liegt die Aufgabe zugrunde, eine Zentrifuge der vorgenann­ ten Art so zu verbessern, daß unter Gewährleistung eines optimalen Massendurchsatzes durch das Pumpenrad eine schonende Behandlung von Schleudergut mit empfindlichen Feststoffpartikeln erfolgen kann.The invention has for its object a centrifuge of the aforementioned ten kind to improve so that ensuring an optimal Mass flow through the impeller a gentle treatment of Can be centrifuged with sensitive solid particles.

Diese Aufgabe wird durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst.This object is achieved by the characterizing features of claim 1 solved.

Die nach der Erfindung zum einen vorgesehenen Vorderkanten mit großem Rundungsquerschnitt stellen sicher, daß empfindliche Feststoffpartikel beim Erfassen und Einleiten in das Pumpenrad nicht zerstört werden, wohingegen zum anderen der durch die Aufwölbung der Leitscheibe geschaf­ fene große Zuströmquerschnitt dafür sorgt, daß das Schleudergut mit geringer und somit schonender Anfangsgeschwindigkeit in das Pumpenrad eintritt, wobei aber die dem radialen Geschwindigkeitsgradienten ent­ sprechende Verengung des Strömungsquerschnitts zwischen jeweils zwei Pumpenradflügeln dafür sorgt, daß ein optimaler Massendurchsatz durch das Pumpenrad erfolgen kann.The provided according to the invention leading edges with a large Rounding cross-section ensure that sensitive solid particles are not destroyed when being gripped and introduced into the impeller, on the other hand, the one created by the bulging of the guide disk fene large inflow cross-section ensures that the centrifuged material with lower and therefore gentle initial speed into the pump wheel occurs, but ent ent the radial velocity gradient speaking narrowing of the flow cross-section between two Impeller blades ensure that an optimal mass throughput the impeller can be done.

Vorteilhafte Ausgestaltungen sind in den Unteransprüchen angegeben. Advantageous configurations are shown in specified in the subclaims.  

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird nachstehend näher erläutert. Es zeigen:An embodiment of the invention is shown in the drawing and is explained in more detail below. It demonstrate:

Fig. 1 einen Schnitt durch eine Schubzentrifuge, Fig. 1 shows a section through a pusher centrifuge,

Fig. 2 einen Schnitt durch das Pumpenrad gemäß der Schnittlinie II-II in Fig. 3 und Fig. 2 shows a section through the pump wheel along the section line II-II in Fig. 3 and

Fig. 3 einen Schnitt durch das Pumpenrad gemäß der Schnittlinie III-III in Fig. 2. Fig. 3 a section through the pump according to the section line III-III in Fig. 2.

Die in Fig. 1 dargestellte Zentrifuge ist eine Schubzentrifuge mit einer inneren und einer äußeren Schleudertrommel 1 und 2. An der äußeren Schleudertrommel 2 ist mittels Stäben 3, die den Boden 4 der inneren Schleudertrommel 1 durchsetzen, ein Schubboden 5 befestigt, der ein Pumpenrad 6 trägt.The centrifuge shown in FIG. 1 is a push centrifuge with an inner and an outer centrifugal drum 1 and 2 . A push floor 5 , which carries a pump wheel 6, is fastened to the outer centrifugal drum 2 by means of rods 3 which penetrate the bottom 4 of the inner centrifugal drum 1 .

Das Pumpenrad 6 setzt sich aus dem, aus dem Schubboden 5 bestehenden Leitboden, den Pumpenradflügeln 7 sowie der Leitscheibe 8 zusammen, die eine zentrale Öffnung 9 aufweist, in der ein am Leitboden befestigter Verteilerkegel 10 angeordnet ist.The pump wheel 6 is composed of the guide floor consisting of the push floor 5 , the pump wheel blades 7 and the guide disk 8 , which has a central opening 9 in which a distributor cone 10 fastened to the guide floor is arranged.

In die zentrale Öffnung 9 ragt ein fest mit dem Zentrifugengehäuse 11 verbundenes Füllrohr 12 für Schleudergut (Suspension oder stichfester Feststoff), das am freien Ende mittels einer Stelleinrichtung (nicht dargestellt) teleskopisch verschiebbar ist, womit sich der Ringspalt 13 zwischen Verteilerkegel 10 und Füllrohrende verändern läßt.A filling tube 12 for centrifuged material (suspension or puncture-proof solid), which is fixedly connected to the centrifuge housing 11 , projects into the central opening 9 and is telescopically displaceable at the free end by means of an adjusting device (not shown), which changes the annular gap 13 between the distributor cone 10 and the end of the filling tube leaves.

Die innere und die äußere Schleudertrommel 1 und 2 weisen konzentrische Wellen 14 und 15 auf, die im Zentrifugengehäuse 11 drehbar gelagert sind, wobei die Welle 14 der inneren Schleudertrommel 1 neben der Drehbewegung noch eine hin- und hergehende Bewegung durchführt. The inner and outer centrifugal drums 1 and 2 have concentric shafts 14 and 15 which are rotatably supported in the centrifuge housing 11 , the shaft 14 of the inner centrifugal drum 1 also carrying out a reciprocating movement in addition to the rotary movement.

Die Fig. 2 und 3 zeigen das Pumpenrad 6 mit dem Leitboden, den Pumpenradflügeln 7 und der Leitscheibe 8. Die Pumpenradflügel 7 sind, wie in Fig. 2 dargestellt, in Drehrichtung (Pfeil) konvex gewölbt. Die Vorderkanten 16 der Pumpenradflügel 7 weisen im Querschnitt eine Rundung mit einem Durchmesser auf, der der größten Profildicke des Pumpenradflü­ gels 7 entspricht. Figs. 2 and 3 show the impeller 6 with the Leitboden, the impeller blades 7 and the idler pulley. 8 As shown in FIG. 2, the impeller blades 7 are convexly curved in the direction of rotation (arrow). The front edges 16 of the impeller 7 have a rounded cross section with a diameter which corresponds to the greatest profile thickness of the impeller 7 .

Claims (4)

1. Schubzentrifuge mit einer Zentrifugentrommel, einem in die Zentrifu­ gentrommel ragenden, mit dem Zentrifugengehäuse verbundenen Füllrohr für Schleudergut, einem mit der Zentrifugentrommel drehenden Pumpenrad mit in Drehrichtung konvex gekrümmten und profilierten Pumpenradflügeln, die zwischen einem scheibenförmigen Leitboden und einer ringförmigen Leit­ scheibe angeordnet sind, wobei das Füllrohr in die von der Leitscheibe gebildete zentrale Öffnung des Pumpenrades mündet, das Pumpenrad am Schubboden befestigt ist, die Vorderkanten der profilierten Pumpenradflügel im Querschnitt eine Rundung aufweisen, dadurch gekennzeichnet, daß die Leitscheibe (8) zur zentralen Öffnung (9) zunehmend nach außen gewölbt ist, und daß die Rundung im wesentliche dem Durchmesser der größten Profildicke des Pumpenradflügels (7) entspricht.1. thrust centrifuge with a centrifuge drum, a filling tube for centrifugal material projecting into the centrifuge drum, connected to the centrifuge housing, a pump wheel rotating with the centrifuge drum with convexly curved and profiled impeller vanes which are arranged between a disk-shaped guide plate and an annular guide disk, wherein the filler pipe opens into the central opening of the pump wheel formed by the guide disk, the pump wheel is fastened to the push floor, the front edges of the profiled pump wheel blades have a rounded cross-section, characterized in that the guide disk ( 8 ) progressively follows towards the central opening ( 9 ) is curved on the outside, and that the rounding corresponds essentially to the diameter of the greatest profile thickness of the impeller blade ( 7 ). 2. Zentrifuge nach Anspruch 1, dadurch gekennzeichnet, daß der Leitboden des Pumpenrades (6) Bestandteil des Schubbodens (5) ist.2. Centrifuge according to claim 1, characterized in that the guide plate of the pump wheel ( 6 ) is part of the moving floor ( 5 ). 3. Zentrifuge nach Anspruch 2, dadurch gekennzeichnet, daß der Leitboden im Zentrum und koaxial zum Füllrohr (12) einen Verteiler­ kegel (10) aufweist.3. Centrifuge according to claim 2, characterized in that the guide plate in the center and coaxially to the filling tube ( 12 ) has a distributor cone ( 10 ). 4. Zentrifuge nach einem der Ansprüche 1 bis 3, dadurch gekenn­ zeichnet, daß das Füllrohr (12) unter Bildung eines veränderbaren Ringspaltes (13) mit dem mit der Spitze in die Füllrohrmündung ragenden Verteilerkegel (10) axial verstellbar ist.4. Centrifuge according to one of claims 1 to 3, characterized in that the filling tube ( 12 ) with the formation of a variable annular gap ( 13 ) with the tip projecting into the filling tube mouth cone ( 10 ) is axially adjustable.
DE4308749A 1993-03-19 1993-03-19 Thrust centrifuge having pump wheel rotating with drum - with filler tube for centrifuging material and connected to centrifuge housing Expired - Lifetime DE4308749C1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE9304723U DE9304723U1 (en) 1993-03-19 1993-03-19 centrifuge
DE4308749A DE4308749C1 (en) 1993-03-19 1993-03-19 Thrust centrifuge having pump wheel rotating with drum - with filler tube for centrifuging material and connected to centrifuge housing
CH00451/94A CH689155A5 (en) 1993-03-19 1994-02-15 Centrifuge.
ITRM940143A IT1271887B (en) 1993-03-19 1994-03-17 SPIN.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4308749A DE4308749C1 (en) 1993-03-19 1993-03-19 Thrust centrifuge having pump wheel rotating with drum - with filler tube for centrifuging material and connected to centrifuge housing

Publications (1)

Publication Number Publication Date
DE4308749C1 true DE4308749C1 (en) 1994-04-07

Family

ID=6483191

Family Applications (1)

Application Number Title Priority Date Filing Date
DE4308749A Expired - Lifetime DE4308749C1 (en) 1993-03-19 1993-03-19 Thrust centrifuge having pump wheel rotating with drum - with filler tube for centrifuging material and connected to centrifuge housing

Country Status (3)

Country Link
CH (1) CH689155A5 (en)
DE (1) DE4308749C1 (en)
IT (1) IT1271887B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4414118A1 (en) * 1994-04-22 1995-10-26 Krauss Maffei Ag Pusher centrifuge
DE4444117C1 (en) * 1994-11-01 1995-12-21 Thomas Spyra Pusher centrifuge with drum contg. pusher base and material guide surface
DE19546019C1 (en) * 1995-12-09 1997-02-20 Siteg Siebtech Gmbh Thrust centrifuge with drum
EP1468743A1 (en) * 2003-04-16 2004-10-20 Ferrum AG Pusher centrifuge
EP2959977A1 (en) * 2014-06-24 2015-12-30 Ferrum AG Double pusher centrifuge and pusher base device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1197813B (en) * 1961-07-15 1965-07-29 Krauss Maffei Ag Pusher centrifuge

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1197813B (en) * 1961-07-15 1965-07-29 Krauss Maffei Ag Pusher centrifuge

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4414118A1 (en) * 1994-04-22 1995-10-26 Krauss Maffei Ag Pusher centrifuge
DE4444117C1 (en) * 1994-11-01 1995-12-21 Thomas Spyra Pusher centrifuge with drum contg. pusher base and material guide surface
DE19546019C1 (en) * 1995-12-09 1997-02-20 Siteg Siebtech Gmbh Thrust centrifuge with drum
EP1468743A1 (en) * 2003-04-16 2004-10-20 Ferrum AG Pusher centrifuge
EP2959977A1 (en) * 2014-06-24 2015-12-30 Ferrum AG Double pusher centrifuge and pusher base device
CN105268562A (en) * 2014-06-24 2016-01-27 弗鲁姆股份公司 Double-action pusher centrifuge and pusher base device
US10363500B2 (en) 2014-06-24 2019-07-30 Ferrum Ag Double-action pusher centrifuge and pusher base device
CN105268562B (en) * 2014-06-24 2019-11-29 弗鲁姆股份公司 Double acting pusher centrifuge and pusher base device

Also Published As

Publication number Publication date
ITRM940143A1 (en) 1995-09-17
ITRM940143A0 (en) 1994-03-17
IT1271887B (en) 1997-06-09
CH689155A5 (en) 1998-11-13

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Legal Events

Date Code Title Description
8100 Publication of patent without earlier publication of application
D1 Grant (no unexamined application published) patent law 81
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: MANNESMANN DEMAG KRAUSS-MAFFEI AG, 80997 MUENCHEN,

8327 Change in the person/name/address of the patent owner

Owner name: KRAUSS-MAFFEI PROCESS TECHNOLOGY AG, 80997 MUENCHE

R071 Expiry of right
R071 Expiry of right