EP0635309B1 - Centrifugeuse à double poussoir - Google Patents

Centrifugeuse à double poussoir Download PDF

Info

Publication number
EP0635309B1
EP0635309B1 EP93810529A EP93810529A EP0635309B1 EP 0635309 B1 EP0635309 B1 EP 0635309B1 EP 93810529 A EP93810529 A EP 93810529A EP 93810529 A EP93810529 A EP 93810529A EP 0635309 B1 EP0635309 B1 EP 0635309B1
Authority
EP
European Patent Office
Prior art keywords
sliding
double
floor device
mixture
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.)
Expired - Lifetime
Application number
EP93810529A
Other languages
German (de)
English (en)
Other versions
EP0635309A1 (fr
Inventor
Niklaus Keller
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.)
Sulzer Escher Wyss AG
Original Assignee
Sulzer Escher Wyss AG
Escher Wyss 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 Sulzer Escher Wyss AG, Escher Wyss AG filed Critical Sulzer Escher Wyss AG
Priority to EP93810529A priority Critical patent/EP0635309B1/fr
Priority to DE59308079T priority patent/DE59308079D1/de
Priority to US08/258,043 priority patent/US5468389A/en
Publication of EP0635309A1 publication Critical patent/EP0635309A1/fr
Application granted granted Critical
Publication of EP0635309B1 publication Critical patent/EP0635309B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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

Definitions

  • the invention relates to a double-push centrifuge a rotating screen drum to separate from Mixture in liquid and solid content in the form of To make filter cake with a centrally arranged Moving floor device, which extends along the axis of the Sieve drum reciprocates around the filter cake alternately with an outer ring area push away, and with a central feed unit, to feed new mixture into empty spaces, which are behind the returning outer ring area arise.
  • Double push centrifuges have the advantage that during the Ejection movement that the moving floor device into a Direction to eject the filter cake on the On the back of the moving floor there is an empty space on the sieve drum arises in the fresh mixture for filtration can be fed.
  • EP 0 068 095 shows double push centrifuges with a central through hole on the Moving floor device, its edge as a control edge is used to inevitably depending on the Position the moving floor of the mixture from a stationary radial feed to the front or back to switch.
  • the object of the invention is the distribution of mixture to simplify in double push centrifuges. This task is solved in that on both sides in the outer Ring area of the moving floor device several axial Passages are attached, each of the Center via associated radial feed openings are feedable within the moving floor device and which divert the mixture on both sides in the axial direction, to counter the ejection movement of the Moving floor device towards that side of the drum on which the moving floor of the filter cake is currently runs away.
  • the invention has the advantage that the axial distribution of the mixture directly in the pressure field on the surface the sieve drum through the axial openings takes place by the radially entering mixture according to the different from the filter cake limited outlets on the side, that runs away from the filter cake.
  • the state of the Filter cake on the moving floor therefore inevitably controls the Distribution of the mixture, while by the individual radial feeding of several axial Through openings ensure that the mixture the same in the openings Has peripheral speeds and pressures.
  • the radial Feed openings branch off from an annular space, which despite its axial movement from the central Feed unit can be easily supplied with a mixture.
  • a breakthrough in the axis of the Moving floor equipment can only be used for Passage of rinsing and washing liquid used if, for example, a support tube is the central one Feed device penetrates and to the rear area has a deflector. This creates a simple one non-clogging infeed system and more space for one Product washing on the back of the drum. It offers itself there is enough space for you with the moving floor moving but to this axially adjustable ring channel, the rinsing and washing liquid to the filter cake distracts and accelerates.
  • the axial Through openings in the outer ring area of the Moving floor can be designed quite differently.
  • the two walls of which the Form common annulus, spiked can be used be a distribution on the axial Make openings. If the axial Through openings to the periphery are open, then the intermediate webs must be kept wider by one same ejection effect on the filter cake as an outer one Ring surface with a closed circumferential band to reach.
  • the ejection effect on To make filter cake adaptable and on the other hand the axial outlet height for the mixture of the axial Through openings opposite the inner surface the sieve drum are adjustable Wear rings can be attached in the outer ring area.
  • Moving floor Another way to create a double wall Moving floor consists of the actual moving floor axial through holes and their radial Milling feed openings in the form of channels, whereby a cover that is attached later covers the channels and at the same time forms this common annulus.
  • Such milled channels have the advantage, that they are opposite the center of an annular gap section Direction of rotation can be advanced to the axial Passage opening more evenly over their share of Apply volume to mixture.
  • a screening drum 6 is on one side via bearings 24 stored in a housing 1, which in a middle Area that was centrifuged with the sieve drum 6 Intercepts liquid 39 in a filtrate housing 4 while the filter cake 14, 15 from an axially oscillating Moving floor device 5 each along the Drum shell surface to the outside in a corresponding Solid housing 3 are pushed.
  • On the warehouse side are several outlet openings 22 for the rear Filter cake 14 attached in the sieve drum.
  • the Moving floor device 5 itself is via bolts 26 and one Thrust hub 25 connected to a piston rod 23, the in turn in the axis 9 of the sieve drum axially is movably mounted to rotate with the Sieve drum 6 an axially oscillating movement make the actual moving floor at his Periphery is transferred to the filter cake 14, 15.
  • the housing 1 is closed with a housing cover 2.
  • a feed unit 11 is in shape on the housing cover a pipe for a mixture 17 attached, which coaxially from a support tube 20 at its outlet is pierced, the support tube having a deflector 33 carries, which deflects the mixture 17 in the radial direction.
  • the Support tube 20 is reached through a central opening 34 in the moving floor device 5 the rear room Sieve drum 6 and allows one or more internal pipes 19, washing and / or washing liquid 21 in the back room.
  • FIGs 2, 3 and 4 is an embodiment of the Moving floor device 5 can be seen in the by one an annular space 18 on the front cover 29 A plurality of radial feed openings 13 is produced merge into axial passage openings 12, which in an outer ring area 10 of Moving floor device 5 in the area of the filter cake 14, 15 are arranged.
  • the Moving floor device 5 becomes mixture 17 in the area between the front edge of the lid and the actual one Moving floor introduced radially and further via the friction accelerated on the walls in an annular space 18 in which Baffles in the form of pockets 28 are attached to the Mix in pockets 28 to peripheral speed bring.
  • the sieve drum consists of its Shell surface from a sieve 7, which is from a open support cylinder 8 is held.
  • the mixture 17 tries axially and in both directions Circumferential direction at the exit from the passage openings 12 distribute, being on the side towards the Ejection movement 27 of the to be extended Filter cake 14 opposes while on the opposite side, an empty space 16 is formed in the the mixture 17 for separation from the liquid portion can flow in. After the reversal of movement the now settled solid content with the subsequent filter cake by not quite a stroke length ejected, while on the back solid content is deposited.
  • FIG. 4 shows axial passage openings 12, which occupy an entire annular gap section 30 in order to in the circumferential direction a good level compensation for the To reach filter cake 14, 15.
  • the Lid 29 is supported in the actual moving floor a puncture 31 with one shoulder, the same time in the area of the pockets 28 there is a limitation for the radial ones Feed openings 13 forms.
  • In the area of the axial Passage openings 12 are annular on both sides Punctures attached in the corresponding to FIG. 9 Wear rings 38 can be used.
  • FIG. 5 and 6 is a double-walled Moving floor device 5 shown as a welded construction, in which the feed unit 11, the mixture 17 in the Feeds in the middle of a hollow moving floor.
  • the two Sidewalls are on their periphery about one End tape 35 connected.
  • the axial Passage openings 12 are separated from one another by spikers 36 separately, the spit 36 simultaneously the radial Form feed openings 13 from the annular space 18.
  • On the Bolt 26 is a funnel-shaped ring channel 37 for Washing liquid 21a in different axial positions fixable to the in the rear space of the drum 6 Tube 19 and the support tube 20 introduced washing liquid to collect and distribute.
  • Rinsing liquid 21b in the rear space of the sieve drum 6 be given up to remove the filter cake 14 and to clean the screen surface 7.
  • Figures 7 and 8 is a welded construction shown analogously to Figures 5 and 6, in which the outer Graduation tape was left out.
  • the axial Through openings 12 are open towards the sieve, so that care must be taken to ensure that the distance between two spits 36 is small enough to eject one to obtain a continuous ring shape of the filter cake 14, 15.
  • Figure 9 shows a section of the moving floor 5 with put on wear rings 38.
  • Wear rings can wear from the Through openings 12 are kept away. It is also possible, the axial outlet height the product properties adapt.
  • the lock ring can be made as a whole or made of several radially displaceable segments be. The can be designed as movable segments radial overflow height can be adjusted continuously.

Landscapes

  • Centrifugal Separators (AREA)

Claims (10)

  1. Centrifugeuse à poussée double avec un tambour tamiseur tournant (6) pour réaliser une séparation d'un mélange (17) en liquide (39) et en partie de matières solides (40) sous forme de gâte au de filtre (14, 15), avec un dispositif de fond poussoir (5) disposé au milieu qui effectue un mouvement de va-et-vient le long de l'axe (9) du tambour tamiseur (6) pour pousser le gâteau de filtre (14, 15) alternativement d'un côté à l'autre avec une zone annulaire extérieure (10), et avec une unité d'alimentation centrale (11) pour introduire du nouveau mélange (17) dans les espaces vides (16) produits derrière la zone annulaire extérieure (10) qui revient, caractérisée en ce que sont ménagées, des deux côtés, dans la zone annulaire extérieure (10) du dispositif de fond poussoir (5) plusieurs ouvertures traversantes axiales (12) qui peuvent être alimentées respectivement depuis le centre par des ouvertures d'alimentation radiales associées (13) à l'intérieur du dispositif de fond poussoir (5) et qui dévient le mélange (17) des deux côtés dans la direction axiale pour le guider contre le mouvement d'éjection du dispositif de fond poussoir (5) sur le côté du tambour sur lequel le fond poussoir s'éloigne momentanément du gâteau de filtre .
  2. Centrifugeuse à poussée double selon la revendication 1, caractérisée en ce que les ouvertures d'alimentation radiales (13) à l'intérieur du dispositif de fond poussoir (5) partent d'un espace annulaire commum (18) qui peut être alimenté en mélange (17) à partir d'une unité d'alimentation centrale (11).
  3. Centrifugeuse à poussée double selon la revendication 1 ou 2, caractérisée en ce que le dispositif de fond poussoir (5) présente au centre un perçage (34) pour un tube de support fixe (20) dans lequel au moins un tube (19) déplaçable axialement permet l'introduction d'un liquide de lavage et/ou de rinçage.
  4. Centrifugeuse à poussée double selon la revendication 3, caractérisée en ce que le tube de support (20) traverse le dispositif d'alimentation central (11) et présente au moins un déflecteur (33) pour le mélange (17) au perçage (34) à l'intérieur du dispositif de fond poussoir.
  5. Centrifugeuse à poussée double selon l'une des revendications 1 à 4, caractérisée en ce que les ouvertures traversantes (12) présentent dans la zone annulaire extérieure (10) la forme de tronçons de fente annulaires (30).
  6. Centrifugeuse à poussée double selon l'une des revendications 2 à 5, caractérisée en ce que l'espace annulaire (18) est constitué d'un dispositif de fond poussoir à paroi double (5).
  7. Centrifugeuse à poussée double selon la revendication 6, caractérisée en ce que le dispositif de fond poussoir (5) a une paroi double dans la zone annulaire extérieure (10) et est réalisé avec une bande de fermeture (35).
  8. Centrifugeuse à poussée double selon l'une des revendications 2 à 5, caractérisée en ce que l'espace annulaire (18) est constitué d'un couvercle (29) placé sur le dispositif de fond poussoir (5).
  9. Centrifugeuse à poussée double selon l'une des revendications 1 à 8, caractérisée en ce que des bagues d'usure (38) peuvent être disposées dans la zone annulaire extérieure (10) au moyen desquelles peut être réglée la hauteur de sortie axiale des ouvertures traversantes axiales (12) par rapport à la surface d'enveloppe intérieure du tambour tamiseur.
  10. Centrifugeuse à poussée double selon l'une des revendications 1 à 9, caractérisée en ce que, parallèlement au dispositif de fond poussoir (5), il existe un canal annulaire (37) déplaçable axialement pour récupérer et répartir le liquide de lavage (21a).
EP93810529A 1993-07-22 1993-07-22 Centrifugeuse à double poussoir Expired - Lifetime EP0635309B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP93810529A EP0635309B1 (fr) 1993-07-22 1993-07-22 Centrifugeuse à double poussoir
DE59308079T DE59308079D1 (de) 1993-07-22 1993-07-22 Doppelschubzentrifuge
US08/258,043 US5468389A (en) 1993-07-22 1994-06-10 Double-acting pusher centrifuge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP93810529A EP0635309B1 (fr) 1993-07-22 1993-07-22 Centrifugeuse à double poussoir

Publications (2)

Publication Number Publication Date
EP0635309A1 EP0635309A1 (fr) 1995-01-25
EP0635309B1 true EP0635309B1 (fr) 1998-01-28

Family

ID=8215005

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93810529A Expired - Lifetime EP0635309B1 (fr) 1993-07-22 1993-07-22 Centrifugeuse à double poussoir

Country Status (3)

Country Link
US (1) US5468389A (fr)
EP (1) EP0635309B1 (fr)
DE (1) DE59308079D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2913112A1 (fr) 2014-02-26 2015-09-02 Ferrum AG Centrifugeuse et procédé de chargement d'une centrifugeuse

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6736968B2 (en) * 2002-06-25 2004-05-18 Tema Systems, Inc. Horizontal scroll screen centrifuge
DE102006051236A1 (de) * 2006-10-31 2008-05-08 Siebtechnik Gmbh Tragkorb einer Siebzentrifuge
CN101138751B (zh) * 2007-09-18 2011-09-21 江苏牡丹离心机制造有限公司 离心卸料离心机中的进料装置
CN103100491B (zh) * 2012-12-14 2014-07-16 浙江轻机离心机制造有限公司 一种推料离心机转鼓上的推料片
ES2698377T3 (es) 2014-06-24 2019-02-04 Ferrum Ag Centrífuga de doble empujador así como dispositivo de base de empujador
EP4008783A1 (fr) 2017-02-27 2022-06-08 Translate Bio MA, Inc. Procédés de purification d'arn messager
CN107694770A (zh) * 2017-11-29 2018-02-16 蚌埠市朗辰化工设备有限公司 一种药液分离用多级离心机
AU2018390481A1 (en) * 2017-12-19 2020-07-09 Xeros Limited Filter for a treatment apparatus
KR102504657B1 (ko) * 2019-11-18 2023-02-27 주식회사 엘지화학 가압 원심 탈수기
CA3197638A1 (fr) 2020-10-01 2022-04-07 Translate Bio, Inc. Procedes de purification d'arn messager
CN115254579B (zh) * 2022-09-13 2023-06-16 甘肃省定西公路事业发展中心 一种公路工程用分类筛沙机

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE595612C (de) * 1930-08-15 1934-04-23 Gutehoffnungshuette Oberhausen Schleudermaschine zum Entwaessern von schlaemmbreiartigem bis feinkoernigem Gut
DE1114149B (de) * 1959-11-17 1961-09-21 Karl Marx Stadt Maschf Schubzentrifuge mit in beiden Hubrichtungen das Schleudergut austragendem Schubboden
SE351372B (fr) * 1967-11-02 1972-11-27 Eie Maskin Ab N A
DE1949641A1 (de) * 1969-10-01 1971-04-08 Buban Eberhard Schubboden mit verschliessbarem Durchlass fuer Schubzentrifugen
CH653573A5 (de) * 1981-06-25 1986-01-15 Escher Wyss Ag Schubzentrifuge.
CH660695A5 (de) * 1982-09-06 1987-06-15 Escher Wyss Ag Doppel-schubzentrifuge.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2913112A1 (fr) 2014-02-26 2015-09-02 Ferrum AG Centrifugeuse et procédé de chargement d'une centrifugeuse

Also Published As

Publication number Publication date
DE59308079D1 (de) 1998-03-05
US5468389A (en) 1995-11-21
EP0635309A1 (fr) 1995-01-25

Similar Documents

Publication Publication Date Title
DE2558682C3 (de) Filtrationsapparat
EP0635309B1 (fr) Centrifugeuse à double poussoir
EP0078064B1 (fr) Appareil pour la séparation des matières de consistance différente
DE3623417C2 (fr)
DE2811771A1 (de) Filtersiebwechselvorrichtung fuer einen kunstharzextruder
DE1751351A1 (de) Geraet zum Vereinigen von Stroemen fliessfaehiger Nahrungsmittel
DE4225818C2 (de) Filter zum kontinuierlichen Filtern von Feststoffe o. dgl. aufweisenden Flüssigkeiten
DE962058C (de) Mehrstufige Schubzentrifuge
DE2234076C3 (de) Rührwerksmühle
EP0710504B1 (fr) Centrifugeuse à poussoir
DE2729344C2 (de) Presse zum Auspressen von tierischem Fleisch mit Knochen
DE68911756T2 (de) Zentrifugalseparator.
EP2039410A1 (fr) Dispositif de filtre
DE3500556C2 (de) Zentrifuge
DE3941505C1 (fr)
DE4017785C2 (fr)
EP0068095B1 (fr) Centrifugeuse à poussoir
EP2392405B1 (fr) Séparateur
DE1913103B2 (de) Dünnschichtapparat
EP2959977B1 (fr) Centrifugeuse à poussoir double ainsi que système de plancher coulissant
DE69721191T2 (de) Horizontale Zentrifuge für die Ölextraktion aus ölhältigen Gemischen
DE3144796A1 (de) Vorrichtung zum trennen von fluessigkeiten und feststoffen, insbesondere bei der kanalreinigung und schlammabsaugung
EP0744212A2 (fr) Tambour pour enrober
DD232844A5 (de) Verfahren und vorrichtung zum trennschleudern von feinkornmineralgemischen
AT521976B1 (de) Schmelzefilter

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

RBV Designated contracting states (corrected)

Designated state(s): DE FR IT

17P Request for examination filed

Effective date: 19950627

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 19970320

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR IT

REF Corresponds to:

Ref document number: 59308079

Country of ref document: DE

Date of ref document: 19980305

ITF It: translation for a ep patent filed

Owner name: ING. ZINI MARANESI & C. S.R.L.

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20100726

Year of fee payment: 18

Ref country code: FR

Payment date: 20100805

Year of fee payment: 18

Ref country code: DE

Payment date: 20100723

Year of fee payment: 18

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20120330

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110801

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120201

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 59308079

Country of ref document: DE

Effective date: 20120201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110722