EP2104570A1 - Vis sans fin de centrifugeuse - Google Patents

Vis sans fin de centrifugeuse

Info

Publication number
EP2104570A1
EP2104570A1 EP07856193A EP07856193A EP2104570A1 EP 2104570 A1 EP2104570 A1 EP 2104570A1 EP 07856193 A EP07856193 A EP 07856193A EP 07856193 A EP07856193 A EP 07856193A EP 2104570 A1 EP2104570 A1 EP 2104570A1
Authority
EP
European Patent Office
Prior art keywords
screw
centrifuge
ceramic
projections
recesses
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
EP07856193A
Other languages
German (de)
English (en)
Other versions
EP2104570B1 (fr
Inventor
Horst Dietschreit
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.)
Siteg Siebtechnik GmbH
Siebtechnik GmbH
Original Assignee
Siteg Siebtechnik GmbH
Siebtechnik 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 Siteg Siebtechnik GmbH, Siebtechnik GmbH filed Critical Siteg Siebtechnik GmbH
Publication of EP2104570A1 publication Critical patent/EP2104570A1/fr
Application granted granted Critical
Publication of EP2104570B1 publication Critical patent/EP2104570B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B04B1/20—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
    • B04B1/2008—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 an abrasion-resistant conveyor or drum

Definitions

  • the invention relates to a centrifuge screw for discharging Zentrifugengut from a centrifuge, wherein at the outer edge of the screw a number of ceramic plates are attached side by side.
  • the object of the invention is to improve a centrifuge screw of the type mentioned above so that with a simple production and attachment a secure hold of the ceramic plate is given even at high stress.
  • the ceramic platelets have at least two recesses in which on a side surface of the screw edge protruding, molded projections in particular metal pins einre, which are shaped according to the recesses.
  • the attachment of the ceramic plate reaches a secure positive connection, with production and attachment are particularly simple.
  • a secure orientation of the platelets is possible. Ceramic plates with recesses are easier to produce. Against strong shear requirements a higher breaking strength is achieved. Also, then the platelets can be easily made of other wear-resistant materials.
  • the attachment is particularly simple if the projections and the corresponding recesses have a round cross section. Alternatively, they may also be non-circular, in particular rectangular or square in cross section.
  • a particularly secure hold and long service life are given when attached to the outer edge of the screw supporting parts in particular as investment castings above the edge protruding, in particular welded, that they widen the screw surface over its edge and recesses or projections in particular form pins for the ceramic tile , which have projections for this purpose, in particular pins or recesses.
  • the ceramic platelets may be glued on the support parts, in particular fine cast particles. It is also advantageous in this case if ceramic flakes are fastened to both sides of the supporting parts, in particular the precision cast particles.
  • the wear is significantly reduced and increases the service life, when the ceramic platelets at the end facing away from the outer edge of the screw edge form a projecting surface that covers the outside of the screw to protect the weld covering the attachment of the support parts.
  • a lesser wear of the support members is achieved when the sides, or side edges of the support members, with which they rest on adjacent support members, are obliquely and / or stepped shaped to lie positively and close to each other.
  • Figures 7 and 8 are perspective views of two-sided attached ceramic plate on the centrifuge edge
  • Figure 9 is a section through the centrifuge edge
  • FIG. 10 shows a ceramic plate
  • Figure 12 views of the supporting parts from two sides and in plan view
  • FIGS. 13 to 18 correspond to FIGS. 1 to 5, with the difference that the supporting parts have projections and the ceramic platelets have corresponding recesses.
  • the helix of a centrifuge screw 1 has an outer edge 2, on which outwardly projecting rectangular, in particular plate-shaped, supporting parts 3, preferably made of investment casting, are welded in particular.
  • the centrifuge screw 1 or its helix are preferably made of steel.
  • the radially outwardly projecting support members 3 each have two holes as recesses 4, which are arranged radially one above the other.
  • On the supporting parts 3 elongated rectangular ceramic plates 5 are fixed, which cover the supporting parts.
  • On the ceramic plate 5 projecting pin-shaped projections 6 are arranged radially above each other and formed, their size and dimensions which correspond to the recesses 4, so that the ceramic plates 5 are laterally fastened to the support members 3 positively.
  • the support members 3 each form a step 3b in the region of their foot, so that the foot 3a attached to the outer edge 2 has a greater thickness D than the thickness of the adjoining outer portion of the support member 3.
  • This step 3b is formed by a step 6a of FIG Platelets 5 covered, wherein the ceramic plates then form the step 6a projecting towards the screw axis protruding surface 7, which protrudes so far to the axis that the screw surface, or the helical surface and thus the outer edge 2 is surmounted to this Optimal protection against wear.
  • the platelets 5 carrying support members 3 are on both sides, or side edges 3c, with which they rest on adjacent support members 3, obliquely and / or stepped, so that they overlap there. This prevents gaps between the supporting parts and thus wear.
  • the projections 6 and the recesses 4 have a round cross section and are thus cylindrical. Instead, however, the projections and the recesses may have a non-circular, in particular rectangular or square cross-section.
  • the width of the ceramic plate 5 corresponds to the width of the support members 3, wherein on each support member is a ceramic plate, the ceramic plates 5, the support members 3 do not project beyond the outside, but complete with them.
  • the exemplary embodiment according to FIGS. 7 to 9 differs from the previous ones in that ceramic plates 5 are fastened on both sides of the support parts 3, wherein the support parts 3 each have two recesses 4 on both sides, in particular for use on both sides.
  • the ceramic platelets 5 on the supporting parts 3 an additional hold is given by the fact that the ceramic platelets on the supporting parts 3 are glued. Further, instead of two protrusions 6 and two recesses 4, three or more protrusions and recesses may be provided on the platelets and supporting members.
  • the protrusions may be provided on the support members 3 and the recesses on the ceramic platelets 5. This is shown in FIGS. 13 to 18.
  • the support parts 3 pin-shaped projections 9, which eino positively in correspondingly shaped recesses 8 of the ceramic plate 5.

Landscapes

  • Centrifugal Separators (AREA)

Abstract

L'invention concerne une vis sans fin de centrifugeuse servant à la décharge d'un produit centrifugé d'une centrifugeuse, présentant sur le bord extérieur de la vis, une série de plaquettes en céramique fixées les unes à côté des autres, caractérisée en ce que sur les plaquettes en céramique, au moins deux saillies en céramique profilée, en particulier des pointes en céramique sont en surplomb et viennent s'insérer, sur une face latérale ou les deux faces latérales du bord de la vis, dans des évidements qui sont profilés de façon correspondant aux saillies ou aux pointes.
EP07856193.3A 2006-12-12 2007-11-20 Vis sans fin de centrifugeuse Active EP2104570B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006058431A DE102006058431A1 (de) 2006-12-12 2006-12-12 Zentrifugenschnecke
PCT/EP2007/010014 WO2008071290A1 (fr) 2006-12-12 2007-11-20 Vis sans fin de centrifugeuse

Publications (2)

Publication Number Publication Date
EP2104570A1 true EP2104570A1 (fr) 2009-09-30
EP2104570B1 EP2104570B1 (fr) 2016-05-04

Family

ID=39092561

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07856193.3A Active EP2104570B1 (fr) 2006-12-12 2007-11-20 Vis sans fin de centrifugeuse

Country Status (8)

Country Link
US (1) US8523751B2 (fr)
EP (1) EP2104570B1 (fr)
CN (1) CN101528354B (fr)
AU (1) AU2007331784B2 (fr)
DE (1) DE102006058431A1 (fr)
PL (1) PL2104570T3 (fr)
WO (1) WO2008071290A1 (fr)
ZA (1) ZA200902576B (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7574016B2 (en) * 2003-06-26 2009-08-11 Fotonation Vision Limited Digital image processing using face detection information
DE102006058431A1 (de) * 2006-12-12 2008-06-19 Siebtechnik Gmbh Zentrifugenschnecke
US20110281716A1 (en) * 2010-05-14 2011-11-17 Hurd David E Wear Tiles for Centrifugal Separators
US20130210601A1 (en) * 2010-08-27 2013-08-15 Alfa Laval Corporate Ab Centrifugal separator
RU2628785C2 (ru) * 2013-05-15 2017-08-22 Андриц С.А.С. Защитная плитка для скребка шнекового транспортера
KR20150104711A (ko) * 2014-03-06 2015-09-16 엘지전자 주식회사 디스플레이 장치 및 그의 동작 방법
US11065628B2 (en) 2018-07-09 2021-07-20 Kennametal Inc. Centrifuge tile assembly
EP4309797A1 (fr) 2022-07-20 2024-01-24 Alfa Laval Corporate AB Ensemble d'usure pour un convoyeur à vis de décanteur en métal de forme hélicoïdale

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US3194385A (en) * 1962-01-15 1965-07-13 Barnese Anthony Screw-type conveyor with resilient bearing means
US3485341A (en) * 1968-03-04 1969-12-23 Kenneth V Lutz Replaceable shoes for paving augers
US3762537A (en) * 1971-09-24 1973-10-02 K Lutz Replaceable shoe for auger
US3977515A (en) * 1974-12-16 1976-08-31 Bird Machine Company, Inc. Hard-surfaced screw conveyor for centrifuges
US4328925A (en) * 1978-02-13 1982-05-11 Pennwalt Corporation Hard surfacing for a centrifuge conveyor
GB2098517B (en) * 1979-05-15 1984-01-18 Pennwalt Corp Centrifuge with abrasion-resistant conveyor
SE427901B (sv) * 1979-05-15 1983-05-24 Pennwalt Corp Centrifug med notningstalig transportor
US4398607A (en) * 1981-06-08 1983-08-16 Roscoe Brown Corporation Auger with adjustable wear plate
DE3140364C2 (de) * 1981-10-10 1983-09-15 Siebtechnik GmbH, 4330 Mülheim Förderschnecke, insbesondere für Vollmantel-Zentrifugen
DK148736C (da) * 1981-12-09 1986-03-03 Alfa Laval Separation As Transportsnegl, navnlig til en dekantercentrifuge
JPS58119362A (ja) * 1982-01-07 1983-07-15 Kobe Steel Ltd 横型遠心分離機のスクリユフライト先端保護構造
DE3225207C1 (de) * 1982-07-06 1983-11-03 Elba Werk Maschinen Gmbh & Co Mischwerk fuer Betonmischmaschinen
JPS5926813A (ja) * 1982-08-06 1984-02-13 Ebara Corp スクリユ−コンベヤ
DE3242300A1 (de) * 1982-11-16 1984-05-17 Klöckner-Humboldt-Deutz AG, 5000 Köln Schneckenzentrifuge zur kontinuierlichen trennung von feststoff-fluessigkeitsgemischen
FR2555085B1 (fr) * 1983-11-23 1987-06-12 Guinard Centrifugation Ensemble constitue d'une piece metallique et d'un element qui y est rapporte et son procede de fabrication
DE3527548A1 (de) * 1985-08-01 1987-03-12 Tigra Hartstoff Gmbh Verschleissschutz fuer foerderschnecke
DE3533194C1 (en) * 1985-09-18 1987-03-12 Abel Pumpen Masch Rotor for a worm centrifuge with a reinforcement consisting of wear plates
JPS62193663A (ja) * 1986-02-19 1987-08-25 Nishihara Environ Sanit Res Corp 遠心分離機
JP2754055B2 (ja) * 1989-10-11 1998-05-20 月島機械株式会社 スクリューコンベアの羽根
US5429581A (en) * 1994-03-07 1995-07-04 Dorr-Oliver Incorporated Wear-resistant tile surfacing for a centrifuge conveyor
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DE102006058431A1 (de) * 2006-12-12 2008-06-19 Siebtechnik Gmbh Zentrifugenschnecke
DE102007046193A1 (de) * 2007-09-26 2009-04-02 Schrage, Otto, Dipl.-Ing. Platte als Panzerung für eine Schneckenwendel, Schnecke für Dekantierzentrifugen, Dekantierzentrifuge und Verfahren zur Herstellung der Platten
JP2012000551A (ja) * 2010-06-15 2012-01-05 Daiwa Kiko Kk スクリューコンベア

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* Cited by examiner, † Cited by third party
Title
See references of WO2008071290A1 *

Also Published As

Publication number Publication date
ZA200902576B (en) 2010-03-31
AU2007331784A1 (en) 2008-06-19
CN101528354A (zh) 2009-09-09
US20100016140A1 (en) 2010-01-21
CN101528354B (zh) 2012-10-10
US8523751B2 (en) 2013-09-03
WO2008071290A1 (fr) 2008-06-19
PL2104570T3 (pl) 2016-11-30
AU2007331784B2 (en) 2011-12-22
DE102006058431A1 (de) 2008-06-19
EP2104570B1 (fr) 2016-05-04

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