EP2928613B1 - Buse d'évacuation d'un tambour centrifuge - Google Patents

Buse d'évacuation d'un tambour centrifuge Download PDF

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Publication number
EP2928613B1
EP2928613B1 EP13814054.6A EP13814054A EP2928613B1 EP 2928613 B1 EP2928613 B1 EP 2928613B1 EP 13814054 A EP13814054 A EP 13814054A EP 2928613 B1 EP2928613 B1 EP 2928613B1
Authority
EP
European Patent Office
Prior art keywords
nozzle
outlet
outlet duct
diameter
duct
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.)
Active
Application number
EP13814054.6A
Other languages
German (de)
English (en)
Other versions
EP2928613A2 (fr
Inventor
Wilfried Mackel
Jürgen TEIGELER
Volker Kassera
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 Mechanical Equipment 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 Mechanical Equipment GmbH filed Critical GEA Mechanical Equipment GmbH
Priority to EP19152074.1A priority Critical patent/EP3488934A1/fr
Publication of EP2928613A2 publication Critical patent/EP2928613A2/fr
Application granted granted Critical
Publication of EP2928613B1 publication Critical patent/EP2928613B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
    • 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
    • B04B1/12—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 with continuous discharge
    • 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
    • B04B11/02—Continuous feeding or discharging; Control arrangements therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B5/00—Other centrifuges
    • B04B5/12—Centrifuges in which rotors other than bowls generate centrifugal effects in stationary containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/36—Outlets for discharging by overflow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B5/00—Other centrifuges
    • B04B5/12—Centrifuges in which rotors other than bowls generate centrifugal effects in stationary containers
    • B04B2005/125—Centrifuges in which rotors other than bowls generate centrifugal effects in stationary containers the rotors comprising separating walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter

Definitions

  • the invention relates to an outlet nozzle for a centrifuge drum according to the preamble of claim 1.
  • Discharge nozzles of the prior art show the generic DE 39 22 619 C1 as well as the DE 41 05 903 A1 , the WO97 / 18900 A1 , the US Pat. No. 2,060,239 A1 and the US 2 560 239 ,
  • Another generic outlet is also from the DE 195 27 039 C1 known.
  • the diameter of the inlet opening of the outlet nozzle in the region of the nozzle body is either the same size as the diameter of the outlet channel or it is at most 50 percent larger or 50 percent smaller than the diameter of the outlet channel.
  • the inlet space widens steadily up to a largest diameter.
  • the diameter of the outlet channel in the nozzle stone initially tapers to a constriction and then widens in one of the variants of the DE 195 27 039 C1 conical at an angle of at least 5 °.
  • the invention solves this problem by the subject matter of claim 1. Thereafter, the narrowest point of the outlet channel in terms of the cross section of the inlet opening itself is formed and it is envisaged that the cross section of the outlet channel on the - preferably total axial - length of the outlet channel in the outlet direction at any point - apart from a possibly provided manufacturing radius at the inlet - reduced and that increases the diameter of the circular cross-section outlet channel, starting from the inlet to the outlet opening.
  • FIG. 2 shows a double conical separator drum 100 designed for continuous operation.
  • the separator drum 100 has a vertical axis of rotation.
  • a separator plate stack 300 of conical separator plates 400 is arranged in the centrifuge chamber 200.
  • the separation plates 400 are arranged on a distributor shaft 600.
  • An inlet pipe 500 serves to feed a product to be processed into distribution channels 700.
  • the distribution channels 700 open into the centrifugal space 200, in which a clarification of the product of solids takes place and optionally optionally a separation into two or more liquid phases of different density.
  • the at least one liquid phase serve one or more processes 900 for liquid phases, which may be provided, for example with peeling discs.
  • the solids are ejected outwardly from the centrifugal drum 100 by circumferentially distributed outlet openings 800 preferably in the area of the largest circumference of the centrifugal drum.
  • an outlet nozzle 1 is inserted into the outlet openings 800.
  • a first preferred embodiment of the outlet nozzle 1 according to the invention shows the FIG. 1 ,
  • the outlet nozzle 1 has a nozzle body 2 designed as a nozzle holder and a nozzle block 3 inserted into the nozzle body 2.
  • an inlet channel 4 is formed and in the nozzle block 3, an axially extending outlet channel 7 is formed.
  • the symmetry axis 5 of the inlet channel 4 and the axis of symmetry 6 of the outlet channel 7 of the nozzle block 3 are aligned at an angle to each other, wherein the enclosed by them Angle is an obtuse angle " ⁇ ", for which preferably the condition is: 90 ° ⁇ ⁇ 160 °.
  • the outlet channel 7 in the nozzle block 3 has an inlet opening 8 and an outlet opening 10 spaced apart in the outlet direction A by an axial distance z for this purpose.
  • the outlet channel 7 widens starting from the inlet opening to the diameter of the outlet opening 10, ie the diameter of the outlet channel 7 in the nozzle block 3 increases from the inlet opening 8 to the outlet opening 10.
  • the narrowest in terms of the cross section of the outlet channel 7 of the nozzle block 3 is formed in such a way from the inlet opening 8 of the nozzle block 3 itself, wherein the cross section of the outlet opening 10 according to the invention is always greater than the cross section of the inlet opening 8 of the outlet channel 7 of the nozzle block 3.
  • the cross section of the outlet channel 7 does not decrease over the axial length of the outlet channel 7 in the outlet direction A at any point. This results in a reduced clogging tendency and improved beam focusing.
  • the nozzle block 3 is preferably a component which is rotationally symmetrical over its entire length, which simplifies its production compared with the generic state of the art. In the region of the inlet opening, it is preferably flat on its axial end face.
  • a solder 11 is preferably present between the nozzle body 2 and the nozzle block 3 in order to secure the nozzle block on the nozzle body.
  • a seal may be provided in this area (which engages, for example, in an annular groove, not shown here), if the nozzle block 3 is to be releasable (if it is held over thread in the nozzle body 2, for example.
  • FIG. 3 shows such a nozzle body designed as a nozzle body 2 with nozzle block 3 (similar to Fig. 1 ).
  • the nozzle block 3 may be screwed into the nozzle holder 2.
  • the seal between the outer circumference of the nozzle body 3 and the nozzle holder in Figure 3 not shown.
  • Fig. 1 and 3 show nozzles with a nozzle holder designed as a nozzle body 2, in which the nozzle block 3 is inserted and the 4 to 6 Nozzles in which a nozzle block 3 is dispensed with.
  • the obtuse-angled to the inlet channel 4 extending outlet channel 7 is after 4 to 6 formed directly in the then one-piece nozzle body 2 itself (in which case a sufficiently hard Material is used to make the nozzle body 2).
  • a sufficiently hard Material is used to make the nozzle body 2
  • areas in which dirt can form can be further reduced.
  • the outlet channel 7 widens in all nozzles over its axial length continuously or in sections. Is a nozzle stone 3 present - Fig. 1 it expands preferably conically over its axial length. As already explained, the outlet channel 7 preferably expands uniformly over its entire axial length. This is advantageous, but not mandatory.
  • the cross section of the outlet channel 7, which is preferably circular in cross section, can not increase uniformly over the axial length of the outlet channel 7.
  • the cross section of the outlet channel 7 in a first inner region with a length y Fig. 3 : Nozzle body with nozzle stone, Fig.
  • Nozzle body without nozzle block be designed so that the diameter of the outlet channel 7 in this first region of the inlet opening over the axial distance y is constant (diameter D1), then what in the exit direction at this section constant diameter D1 of the circular cross-section preferably outlet channel 7 adjoins the flaring outlet cone 9 whose largest diameter D2 is greater than the diameter D1 ( Fig. 3 to 6 ).
  • the outlet channel 7 may have a circumferential production radius R1 on the circumferential edge, preferably circular. This can be very sharp-edged (ie the radius R1 is negligibly small and can be set equal to zero) or rather slightly larger (preferably less than 3 mm, in particular less than 1 mm).
  • the production radius R1 is preferably dimensioned such that it extends over less than 10% of the axial extent z of the outlet channel 7. It is preferably advantageous in the region of the outlet channel 7, in which it has its smallest diameter D1.
  • the manufacturing radius R1 reduces the wear on the inlet opening 8 of the outlet channel.
  • 7 To Fig. 6 joins the manufacturing radius R1 (in the outflow direction widening aligned) second radius R2, which is such that a sharp-edged transition in the region of the transition from the manufacturing radius R1 to the widening cone 9 is avoided.
  • Seals 12 on the outer circumference of the nozzle body 2 seal the outlet nozzle 1 against the drum wall.
  • a thread 13 also allows screwing of the nozzle body 2 in the drum wall or in the openings 800 in the drum wall. Also a bayonet lock or the like is conceivable.
  • outlet channel 7 preferably in the nozzle block 3, is particularly advantageous in all embodiments. Since the outlet channel 7 does not taper from the region of the inlet opening 8 to the region of the outlet opening 10, the outlet channel 7 extends from the inlet opening 8 to the outlet opening 10. possibly up to the mentioned manufacturing radius - consistently conically widens, compared to the prior art, a significantly reduced tendency to blockage is achieved, especially in a change in the consistency of the product to be processed.
  • the angle of inclination ⁇ of the conical region 9 of the outlet channel 8 to the axis of symmetry 6 of the outlet channel 7 is 5 ° to 45 °, in particular 10 ° to 30 °, and particularly preferably 30 ° to 45 °. In this area, the tendency to blockage is significantly reduced.
  • the diameter of the outlet channel 7 increases over more than 50 percent, in particular more than 75 percent, of its axial length, whereby a particularly good operating behavior is achieved.
  • the inlet channel 4 does not widen conically as in the prior art but initially tapers uniformly to a constant diameter that extends over most of the axial length of the inlet channel or inlet channel 4.
  • no nozzle block 3 is provided in the nozzle body 2 but is itself formed integrally in the nozzle body, wherein it has the axially extending inlet channel 4 and the obtuse angle to the inlet channel extending outlet channel 7, which has the inlet opening 8 and the outlet opening 10, wherein the diameter of the outlet channel 7 sections enlarged, such that the narrowest point of the outlet channel 7 with respect to the cross section is formed by the inlet opening 8 itself, wherein the cross-section of the outlet channel 7 is reduced over the axial length of the outlet channel 7 in the outlet direction A at any point.
  • a sufficiently hard material chosen can be dispensed with the nozzle stone of harder material than the material of the nozzle holder so.
  • the absolute nozzle diameter D2 at the outlet opening is preferably significantly larger than the diameter D1 at the inlet opening 8, in particular more than twice as large.

Landscapes

  • Centrifugal Separators (AREA)
  • Nozzles (AREA)
  • Paper (AREA)
  • Exhaust Gas After Treatment (AREA)

Claims (13)

  1. Buse d'évacuation pour tambours centrifuges, comportant un corps de buse (2)
    a. qui présente un canal d'admission (4) s'étendant axialement à l'intérieur et un canal d'évacuation (7) s'étendant selon un angle obtus par rapport au canal d'admission,
    b. le canal d'évacuation présentant une ouverture d'entrée (8) et une ouverture de sortie (10),
    c. le diamètre du canal d'évacuation (7) augmentant au moins sur certaines parties,
    caractérisée en ce que
    d. le point le plus étroit du canal d'évacuation (7) quant à la section transversale est formé par l'ouverture d'entrée (8) elle-même et, en option, un rayon de fabrication (R1) est formé au bord périphérique de l'ouverture d'entrée (8),
    e. la section transversale du canal d'évacuation (7) ne diminue en aucun point sur la longueur axiale du canal d'évacuation (7) dans la direction de sortie (A) et
    f. le diamètre du canal d'évacuation (7), circulaire en section transversale, augmente à partir de l'ouverture d'entrée (8) jusqu'à l'ouverture de sortie (10).
  2. Buse d'évacuation selon la revendication 1, caractérisée en ce que le corps de buse (2) est réalisé sous la forme d'un porte-buse et en ce qu'un bloc de buse (3), de préférence constitué d'un matériau plus dur que le corps de buse (2), est inséré dans le porte-buse et que le canal d'évacuation (7) avec l'ouverture d'entrée (8) et l'ouverture de sortie (10) est réalisé dans le bloc de buse (3) et s'étend axialement dans celui-ci.
  3. Buse d'évacuation selon l'une des revendications précédentes, caractérisée en ce que le diamètre du canal d'évacuation (7), circulaire en section transversale, augmente en tout point à partir de l'ouverture d'entrée (8) dans le bloc de buse (3) jusqu'à l'ouverture de sortie (10).
  4. Buse d'évacuation selon l'une des revendications précédentes, caractérisée en ce que la section transversale du canal d'évacuation (7) est circulaire sur toute sa longueur axiale (3).
  5. Buse d'évacuation selon l'une des revendications précédentes, caractérisée en ce que le diamètre du canal d'évacuation (7) augmente constamment et régulièrement à partir de l'ouverture d'entrée (8) dans le bloc de buse (3) jusqu'à l'ouverture de sortie (10) du bloc de buse (3).
  6. Buse d'évacuation selon l'une des revendications précédentes, caractérisée en ce que l'angle de conicité (β) du canal d'évacuation (7) par rapport à l'axe médian (6) du canal d'évacuation est tel que : (β) > 5°, de préférence (β) > 10° et particulièrement de préférence (β) > 30°.
  7. Buse d'évacuation selon la revendication 9, caractérisée en ce que l'angle de conicité (β) est tel que : (β) < 45°.
  8. Buse d'évacuation selon l'une des revendications précédentes, caractérisée en ce que le diamètre du canal d'évacuation (7) s'élargit sur plus de 50 %, en particulier plus de 75 %, de sa longueur axiale.
  9. Buse d'évacuation selon l'une des revendications précédentes, caractérisée en ce que le plus petit diamètre du canal d'évacuation « D1 » - le cas échéant après un rayon de fabrication (R1) - est tel que : 0,5 mm <= D1 <= 5 mm.
  10. Buse d'évacuation selon l'une des revendications précédentes, caractérisée en ce que la condition suivante est remplie : le plus grand diamètre du canal d'évacuation D2 est au moins deux fois plus grand que le plus petit diamètre D1 du canal d'évacuation.
  11. Buse d'évacuation selon l'une des revendications précédentes, caractérisée en ce que la longueur axiale Z du canal d'évacuation (7) remplit la condition suivante : 4 mm <= z <= 30 mm.
  12. Buse d'évacuation selon l'une des revendications précédentes, caractérisée en ce qu'elle est conçue pour un tambour centrifuge à simple ou double cône (100) d'un séparateur à axe de rotation vertical dans lequel un produit à traiter doit être clarifié de matières solides en fonctionnement continu.
  13. Tambour séparateur à axe de rotation vertical, caractérisé par une buse d'évacuation selon l'une ou plusieurs des revendications précédentes.
EP13814054.6A 2012-12-05 2013-12-03 Buse d'évacuation d'un tambour centrifuge Active EP2928613B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19152074.1A EP3488934A1 (fr) 2012-12-05 2013-12-03 Buse de sortie pour un tambour centrifuge

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012111801.9A DE102012111801A1 (de) 2012-12-05 2012-12-05 Auslassdüse für eine Zentrifugentrommel
PCT/EP2013/075300 WO2014086735A2 (fr) 2012-12-05 2013-12-03 Buse d'évacuation d'un tambour centrifuge

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP19152074.1A Division EP3488934A1 (fr) 2012-12-05 2013-12-03 Buse de sortie pour un tambour centrifuge
EP19152074.1A Division-Into EP3488934A1 (fr) 2012-12-05 2013-12-03 Buse de sortie pour un tambour centrifuge

Publications (2)

Publication Number Publication Date
EP2928613A2 EP2928613A2 (fr) 2015-10-14
EP2928613B1 true EP2928613B1 (fr) 2019-02-27

Family

ID=49883058

Family Applications (2)

Application Number Title Priority Date Filing Date
EP13814054.6A Active EP2928613B1 (fr) 2012-12-05 2013-12-03 Buse d'évacuation d'un tambour centrifuge
EP19152074.1A Withdrawn EP3488934A1 (fr) 2012-12-05 2013-12-03 Buse de sortie pour un tambour centrifuge

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP19152074.1A Withdrawn EP3488934A1 (fr) 2012-12-05 2013-12-03 Buse de sortie pour un tambour centrifuge

Country Status (8)

Country Link
US (1) US10315203B2 (fr)
EP (2) EP2928613B1 (fr)
CN (1) CN104837563A (fr)
BR (1) BR112015012534B1 (fr)
DE (1) DE102012111801A1 (fr)
RU (1) RU2653827C2 (fr)
TR (1) TR201907235T4 (fr)
WO (1) WO2014086735A2 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9492829B2 (en) * 2013-03-11 2016-11-15 Control Components, Inc. Multi-spindle spray nozzle assembly
EP2962762B1 (fr) * 2014-07-04 2021-03-24 Andritz Frautech S.r.l. Buse de décharge pour séparateur de buse
US20190099763A1 (en) * 2016-03-24 2019-04-04 Fluid-Quip, Inc. Centrifuge rotor with staggered nozzles for use in a disc nozzle centrifuge
DE102016108057B4 (de) 2016-04-29 2018-08-02 Gea Mechanical Equipment Gmbh Auslassdüse für eine Zentrifugentrommel, Zentrifugentrommel und Montagewerkzeug
CN108531375A (zh) * 2018-04-24 2018-09-14 郭庆 一种菌液细菌分离系统
CN108424836A (zh) * 2018-04-24 2018-08-21 郭庆 一种菌液细菌多级筛选设备

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US2060239A (en) * 1936-11-10 Centrifuge construction
BE464440A (fr) * 1946-02-21
US2560239A (en) 1949-06-01 1951-07-10 Chicago Pneumatic Tool Co Air-line oiler
US2695748A (en) * 1952-01-22 1954-11-30 Merco Centrifugal Co Centrifuge nozzle construction
DE3240093C2 (de) * 1982-10-29 1986-03-27 Westfalia Separator Ag, 4740 Oelde Zentrifuge mit einer selbstentleerenden Schleudertrommel
CN87214261U (zh) 1987-10-16 1988-03-23 石油工业部华东勘察设计研究院 旋流式喷头
DE3922619C1 (fr) 1989-07-10 1990-10-04 Westfalia Separator Ag, 4740 Oelde, De
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SE505385C2 (sv) 1995-11-17 1997-08-18 Alfa Laval Ab Rotor för en centrifugalseparator
US6511005B2 (en) * 2001-03-30 2003-01-28 Fluid-Quip, Inc. Bowl centrifuge nozzle
CA2579251C (fr) * 2004-09-08 2013-07-23 Alfa Laval Corporate Ab Buse de centrifugeuse et procede et appareil d'insertion de ladite buse dans un carter de centrifugeuse
DE102004051264A1 (de) * 2004-10-21 2006-04-27 Westfalia Separator Ag Separator mit einer Schleudertrommel und einem Kolbenschieber
DK178253B1 (en) 2010-11-12 2015-10-12 Alfa Laval Corp Ab A centrifugal separator and an outlet element for a centrifugal separator

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Also Published As

Publication number Publication date
BR112015012534A2 (pt) 2017-07-11
EP3488934A1 (fr) 2019-05-29
WO2014086735A2 (fr) 2014-06-12
TR201907235T4 (tr) 2019-06-21
DE102012111801A1 (de) 2014-06-05
US10315203B2 (en) 2019-06-11
RU2015126091A (ru) 2017-01-12
BR112015012534B1 (pt) 2020-10-06
EP2928613A2 (fr) 2015-10-14
WO2014086735A3 (fr) 2015-04-02
CN104837563A (zh) 2015-08-12
RU2653827C2 (ru) 2018-05-14
US20150306606A1 (en) 2015-10-29

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