EP1316362B1 - Dispositif de déchargement d'une centrifugeuse - Google Patents

Dispositif de déchargement d'une centrifugeuse Download PDF

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Publication number
EP1316362B1
EP1316362B1 EP02026821A EP02026821A EP1316362B1 EP 1316362 B1 EP1316362 B1 EP 1316362B1 EP 02026821 A EP02026821 A EP 02026821A EP 02026821 A EP02026821 A EP 02026821A EP 1316362 B1 EP1316362 B1 EP 1316362B1
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EP
European Patent Office
Prior art keywords
discharge
discharge apparatus
centrifuges
cleaning elements
cleaning
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
EP02026821A
Other languages
German (de)
English (en)
Other versions
EP1316362A3 (fr
EP1316362A2 (fr
Inventor
Johannes Feller
Gunnar Grim
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.)
KMPT AG
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KMPT AG
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Publication date
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Publication of EP1316362A2 publication Critical patent/EP1316362A2/fr
Publication of EP1316362A3 publication Critical patent/EP1316362A3/fr
Application granted granted Critical
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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
    • B04B11/08—Skimmers or scrapers for discharging ; Regulating thereof
    • 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

Definitions

  • the invention relates to devices for assisting the discharge of a solid filter cake from a centrifuge.
  • the solids discharge is carried out at horizontally or vertically mounted peeler centrifuges normally characterized in that a peeler arranged on a scraper peels off a filter cake, wherein the filter cake is conveyed by a Austragungsstoff from the centrifuge drum.
  • the Austragungsstoff can be designed as a steep sliding plate, a so-called chute, or as Schneckenaustrag.
  • the discharge surface can be coated with a material which has a low tendency to adhesion to the solids.
  • these coatings generally have a significantly lower corrosion resistance than the highly resistant base materials of the centrifuge (stainless steel, nickel-based material, titanium, etc.).
  • the coating of suspension, washing or cleaning liquid is attacked or too quickly due to abrasion wear.
  • An equipped as a suction scraper is for example from the DE-A-3340636 known.
  • the peeled solid is entrained by a gas flow.
  • a relatively high gas flow is required, which requires a high expenditure on equipment.
  • the solids have to be separated from the gas stream which further increases the expenditure on equipment.
  • the DE-C-4330594 and the DE-A-1933545 describe each centrifuges with discharge devices in the form of screw conveyors.
  • the DE-A-3905341 describes a discharge device for centrifuges in the form of a chute or a fall plate according to the preamble of patent claim 1.
  • the invention has for its object to provide a discharge for the product discharge from centrifuges, are largely avoided in the product attachments.
  • cleaning elements are mounted in the discharge component, which clean the discharge surface of the Austragungsbauteils. Suitable movements (e.g., pivoting, rotating, pushing, or a combination thereof) of the cleaning elements over the inner surface of the chute prevent deposits or dislodge any deposits formed and, for example, carry gravity or other transport assisting effects out of the chute.
  • Fig. 1 shows a schematic cross-sectional view of a centrifuge with discharge.
  • a centrifuge drum 1 is rotatably mounted on a shaft, wherein the lateral surfaces of the centrifuge drum 1 are formed as a filter. Separated suspension is introduced into the interior of the centrifuge drum and the centrifuge drum is rotated. In doing so, liquid enters through the lateral surface of the centrifuge drum into the housing and is discharged there. At the inner surface of the drum shell thereby collects a filter cake.
  • a sweeper 2 which can be swiveled by means of a drive 3, is provided.
  • the reamer 2 is moved from a rest position to a peeling position in the filter cake, wherein the centrifuge drum 1 can be set in a low-speed rotation.
  • solids are peeled off the drum shell and fall under gravity into a chute 4, which is designed for example as a pipe with a steep and a vertical section.
  • the product is supplied for further processing.
  • the device described so far known centrifuges with discharge organs, and further details of the centrifuge are therefore not explained in detail.
  • a cleaning element 5 is provided according to the invention, which protrudes into the interior of the chute and is rotatably supported via an axle 6 by means of a drive 10.
  • the cleaning element 5 extends in the position shown parallel to the sliding surface of the chute 4 and sweeps over the sliding surface during rotation and prevents or abolishes product adhesions.
  • the cleaning element can be operated continuously or intermittently. In this case, the cleaning element is temporarily rotated in a rest position remote from the sliding surface of the chute.
  • FIG. 2 shows a cross section through the chute along the dashed line A of FIG. 1.
  • the cleaning element 5 is formed as a sheet, the product adhesions 7 dissolves or removed from the sliding surface of the chute 4.
  • FIG. 3 shows an embodiment in which the cleaning element is designed as a nozzle element 8.
  • the nozzle member 8 is supplied via a hollow shaft 6 gas, in particular air, and the gas is introduced from the cleaning element 8 in the chute wall adhering product 7, so that the separation is supported.
  • the discharge unlike the discharge, no large gas flow required, so that the associated disadvantages mentioned above do not occur.
  • the cleaning element is designed as a scraper, which is pivoted as needed about the longitudinal axis of the chute, wherein the inner surface of the chute is cleaned. In the rest position of the cleaning element, the solids flow is not hindered, which can be achieved for example by positioning on the pivot axis.
  • the cleaning element may also be designed as a single-leaf element rotating symmetrically or eccentrically about the central axis.
  • the cleaning device comprises a plurality of blades which rotate about the central axis, wherein the axis of rotation need not be located centrally in the chute.
  • the cleaning elements can also be arranged so that they are moved only at the points at which deposits are expected, with a small distance over the inner surface of the chute. In Schurrenformen that are not performed concentrically about a central axis, several cleaning elements can be used in the longitudinal direction of the chute, which clean only a certain contour of the chute.
  • bars may be rotated about an axis, pivoted, or moved by linear movement along the inner surface of the chute such that the product is firmly bonded to the inner surface the chute is destroyed.
  • the pivot axis of one or more cleaning elements may be arranged transversely to the center axis of the chute, wherein e.g. the sheet is placed in the rest position so that it does not hinder the flow of product and is selectively guided as needed over the places where form deposits.
  • the avoidance or removal of deposits by this method is also possible on other fixtures that allow in the rest position an unobstructed flow of the product through the chute and remove the deposit if necessary, they are arranged for inspection so that a complete insight and inspection of the surfaces is possible.
  • the cleaning elements may be provided at the top or one-sided / two-sided with nozzles.
  • the additional gas stream reduces / prevents the attachment of the product or supports the cleaning.
  • embodiments are conceivable in which no solids, but e.g. viscous fluids are discharged from the centrifuge.
  • the cleaning elements may be arranged so as not to interfere with normal production flow through the discharge means, to be used only when needed, when deposits build up, generate no or no appreciable dead spots in the process space, do not interfere with cleaning of the process space, and provide a cleanability of inspection without disassembly or one opposite allow the execution without cleaning element increased effort.

Landscapes

  • Centrifugal Separators (AREA)
  • Cleaning In General (AREA)

Claims (12)

  1. Dispositif de déchargement pour évacuer des produits hors de centrifugeuses, comportant une partie de déchargement (4) avec une surface de déversement sous la forme d'une tôle de glissement à forte inclinaison, caractérisé par un dispositif de nettoyage avec un élément de nettoyage (5), qui nettoie au moins une partie de la surface de déversement.
  2. Dispositif de déchargement selon la revendication 1, caractérisé en ce que le dispositif de nettoyage est réalisé sous la forme d'un élément de raclage.
  3. Dispositif de déchargement pour centrifugeuses selon la revendication 2, caractérisé en ce que l'élément de raclage est réalisé sous la forme d'une lame mobile ou d'une plaque mobile ou d'une barre mobile.
  4. Dispositif de déchargement pour centrifugeuses selon la revendication 2, caractérisé en ce que l'élément de raclage est réalisé sous la forme d'une lame tournant autour d'un axe ou d'une plaque tournant autour d'un axe ou d'une barre tournant autour d'un axe.
  5. Dispositif de déchargement pour centrifugeuses selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un ou plusieurs éléments de nettoyage (5) sont aptes à se déplacer par pivotement, rotation ou coulissement au-dessus de la surface de déversement.
  6. Dispositif de déchargement pour centrifugeuses selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un ou plusieurs éléments de nettoyage (5) sont montés concentriquement ou excentriquement de manière à pouvoir tourner autour d'un axe médian d'un élément de déchargement (4) tubulaire.
  7. Dispositif de déchargement pour centrifugeuses selon l'une quelconque des revendications 1 à 5, caractérisé en ce que l'axe de pivotement d'un ou de plusieurs éléments de nettoyage (5) est disposé perpendiculairement à l'axe longitudinal ou à la direction de transport de l'élément de déchargement (4).
  8. Dispositif de déchargement pour centrifugeuses selon l'une quelconque des revendications précédentes, caractérisé en ce que les éléments de nettoyage (5) peuvent être amenés dans des positions de repos ne gênant pas le déversement du produit.
  9. Dispositif de déchargement pour centrifugeuses selon l'une quelconque des revendications précédentes, caractérisé en ce que les éléments de nettoyage (5) sont montés de telle sorte que seules les zones, dans lesquelles sont attendus des dépôts (7), sont nettoyées.
  10. Dispositif de déchargement pour centrifugeuses selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une ou plusieurs buses de projection d'un flux de gaz sont montées sur un ou plusieurs éléments de nettoyage (5).
  11. Dispositif de déchargement pour centrifugeuses selon l'une quelconque des revendications précédentes, caractérisé en ce que les éléments de nettoyage (5) sont montés de telle sorte qu'ils ne gênent pas le flux normal de production.
  12. Centrifugeuse comportant un dispositif de déchargement selon une des revendications précédentes.
EP02026821A 2001-11-29 2002-11-28 Dispositif de déchargement d'une centrifugeuse Expired - Lifetime EP1316362B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10158705 2001-11-29
DE10158705A DE10158705A1 (de) 2001-11-29 2001-11-29 Vorrichtung zum Austrag eines Feststoffes aus einer Zentrifuge

Publications (3)

Publication Number Publication Date
EP1316362A2 EP1316362A2 (fr) 2003-06-04
EP1316362A3 EP1316362A3 (fr) 2003-07-16
EP1316362B1 true EP1316362B1 (fr) 2007-10-10

Family

ID=7707466

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02026821A Expired - Lifetime EP1316362B1 (fr) 2001-11-29 2002-11-28 Dispositif de déchargement d'une centrifugeuse

Country Status (4)

Country Link
EP (1) EP1316362B1 (fr)
AT (1) ATE375205T1 (fr)
DE (2) DE10158705A1 (fr)
ES (1) ES2292678T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1787723B1 (fr) * 2005-11-18 2017-02-22 Ferrum AG Cartouche centrifuge

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1731091U (de) * 1956-08-01 1956-09-27 Krauss Maffei Ag Austragschurre fuer schaelzentrifugen.
DE1871984U (de) * 1963-03-27 1963-05-09 Krauss Maffei Ag Vorrichtung zum abschaelen der festgutschicht vom trommelmantel von schaelzentrifugen.
DE1782367C3 (de) * 1966-03-24 1974-02-28 Krauss-Maffei Ag, 8000 Muenchen Vorrichtung zum Entfernen des Feststoffes aus einer Zentrifuge. Ausscheidung aus: 1298448
DE1933545A1 (de) * 1969-07-02 1971-01-21 Titus Hans Joachim Schael- und Austragsvorrichtung fuer Schleudergut aus Zentrifugen
DE3905341A1 (de) * 1988-03-30 1989-10-19 Kloeckner Humboldt Deutz Ag Zentrifugalapparat
JP2528061B2 (ja) * 1992-08-28 1996-08-28 三菱化工機株式会社 ロ―タリ排出型遠心分離機
DE4330594C1 (de) * 1993-09-09 1994-09-22 Krauss Maffei Verfahrenstechni Vorrichtung zum Entfernen einer Filterkuchen-Grundschicht

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP1316362A3 (fr) 2003-07-16
DE50211039D1 (de) 2007-11-22
ATE375205T1 (de) 2007-10-15
EP1316362A2 (fr) 2003-06-04
DE10158705A1 (de) 2003-06-18
ES2292678T3 (es) 2008-03-16

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