EP0071012B1 - Zentrifugensieb - Google Patents

Zentrifugensieb Download PDF

Info

Publication number
EP0071012B1
EP0071012B1 EP82105275A EP82105275A EP0071012B1 EP 0071012 B1 EP0071012 B1 EP 0071012B1 EP 82105275 A EP82105275 A EP 82105275A EP 82105275 A EP82105275 A EP 82105275A EP 0071012 B1 EP0071012 B1 EP 0071012B1
Authority
EP
European Patent Office
Prior art keywords
screen
sieve
centrifuge
bars
drum
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
Application number
EP82105275A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0071012A1 (de
Inventor
Leonhard Spiewok
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
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 filed Critical Sulzer Escher Wyss AG
Priority to AT82105275T priority Critical patent/ATE10442T1/de
Publication of EP0071012A1 publication Critical patent/EP0071012A1/de
Application granted granted Critical
Publication of EP0071012B1 publication Critical patent/EP0071012B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B7/00—Elements of centrifuges
    • B04B7/08—Rotary bowls
    • B04B7/12—Inserts, e.g. armouring plates
    • B04B7/16—Sieves or filters

Definitions

  • the invention relates to a centrifuge sieve with a supporting structure resting on the inside of a centrifugal drum, to which sieve bars made of wear-resistant hard material are attached at at least two points in the axial direction of the centrifugal drum.
  • the centrifugal drum against wear-resistant hard material rods are connected to the drum support by gluing over its entire length.
  • elastic intermediate layers are provided in these connections, e.g. B. rubber intermediate elements.
  • these are not sufficiently durable, not temperature-resistant and not corrosion-resistant during operation.
  • they allow mobility in several directions, which allows undesired and impermissible deformations of the sieve bars and support structure against each other.
  • Another disadvantage is the poor processability, difficult and unsuitable for mass production assembly.
  • the invention has for its object to avoid the above-mentioned disadvantages of the prior art and to provide a centrifuge screen in which the hard material sieve bars permanently, temperature and corrosion resistant, movable in a defined manner against the supporting structure and connected to it and easy to process and are mountable, the drum shape and the orientation of the axis of rotation being arbitrary.
  • this object is achieved in that the sieve bars are firmly connected to the support structure at one point, while connections are provided at the other points which only allow the sieve bars to move relative to the support structure in the axial direction.
  • connections are designed as riveted connections, the hard material sieve rods being riveted to the supporting structure at one point in each case, while rivets are provided at the other connection points on the sieve rods, which run in the axial direction of the centrifugal drum Slots in the support structure are movable.
  • suitable connecting elements e.g. B. screws, pins, bolts or the like.
  • the centrifuge sieve shown in FIGS. 1, 2 and 3 has a centrifugal drum T with a drum diameter from the decimeter to the meter range, on the inside of which a sieve-like support structure 1 rests, and on the inside of which a large number of sieve rods 2 made of hard material are in turn protected against wear with a thickness of a few mm and a length of up to about 30 cm in the axial direction of the centrifugal drum are attached at a small lateral distance from one another.
  • the support structure 1 is made of a suitable metal, e.g. B. steel, and has sieve slots 3 or holes for the passage of the filtrate when centrifuging.
  • the support structure can also consist of a framework of rings which are connected to one another by axially parallel rods, so that the required sieve slots are created between the rods.
  • annular webs 4 are provided, on which the support structure 1 rests, with a passage for the filtrate through the spaces 5 between the sieve bars 2, the underlying slots of the support structure 1 and the slots 6 in the drum T offset therefrom is formed.
  • the sieve bars 2 are made of a wear-resistant hard material, for. B. melt basalt or sintered material, such as sintered ceramic or cemented carbide, e.g. B. tungsten carbide. Since temperature fluctuations of up to 100 ° C can occur during operation of the centrifuge, because of the very different thermal expansion of the materials of the hard material, e.g. B. tungsten carbide, and the support structure, e.g. B. steel, when attaching the sieve bars 2 to the supporting structure 1, precautions are taken for length compensation in order to avoid deformations and breakage of the sieve bars.
  • a wear-resistant hard material for. B. melt basalt or sintered material, such as sintered ceramic or cemented carbide, e.g. B. tungsten carbide. Since temperature fluctuations of up to 100 ° C can occur during operation of the centrifuge, because of the very different thermal expansion of the materials of the hard material, e.g. B. tungsten carbide, and the support structure, e.g. B
  • rivets 7, 8 made of stainless, high-alloy steel are soldered to the sieve bars 2, necessary if necessary, depending on the material, with suitable transition layers known to the person skilled in the art.
  • the support structure is provided with corresponding rivet holes 9, 10.
  • the corresponding rivet holes 9 have a circular shape, so that when riveting a firm, immobile connection between the sieve bar 2 and the support structure 1 is created.
  • all other rivet holes 10 for the remaining rivets 8 are in the form of elongated slots 10 running in the axial direction.
  • FIG. 4 shows another example in which several layers of sieve bars 2 1 , 2 2 in Axis direction are arranged a short distance behind one another.
  • Each sieve bar is riveted to the supporting structure 1 at one end 11 1 , 11 2 and immovably and at the other end 12 1 , 12 2 by means of slot-shaped rivet holes in the axial direction.
  • Between the sieve bars 2 1 , 2 2 several rows of sieve slots 3 1 , 3 2 are provided in the support structure 1, through which the filtrate can flow off.
  • the use of several layers of sieve bars allows a longer length of the sieve drum, up to several meters. This is particularly advantageous for sintered materials that only allow a limited rod length.
  • the support structure can also consist of several parts arranged one behind the other in the axial direction, with each support structure part, for example, carrying only one sieve bar layer.
  • suitable other connecting elements can also be used within the scope of the invention, e.g. B. screws, pins, bolts which engage in corresponding holes or bores, in each case one of the holes for each sieve bar can be circular and the other elongated, oval or slit-shaped to ensure the desired mobility in the axial direction.

Landscapes

  • Centrifugal Separators (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
EP82105275A 1981-07-24 1982-06-16 Zentrifugensieb Expired EP0071012B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82105275T ATE10442T1 (de) 1981-07-24 1982-06-16 Zentrifugensieb.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4826/81 1981-07-24
CH4826/81A CH654759A5 (de) 1981-07-24 1981-07-24 Zentrifugensieb.

Publications (2)

Publication Number Publication Date
EP0071012A1 EP0071012A1 (de) 1983-02-09
EP0071012B1 true EP0071012B1 (de) 1984-11-28

Family

ID=4283215

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82105275A Expired EP0071012B1 (de) 1981-07-24 1982-06-16 Zentrifugensieb

Country Status (12)

Country Link
US (1) US4430221A (enrdf_load_stackoverflow)
EP (1) EP0071012B1 (enrdf_load_stackoverflow)
JP (1) JPS5827659A (enrdf_load_stackoverflow)
AT (1) ATE10442T1 (enrdf_load_stackoverflow)
AU (1) AU552647B2 (enrdf_load_stackoverflow)
BR (1) BR8204275A (enrdf_load_stackoverflow)
CA (1) CA1186656A (enrdf_load_stackoverflow)
CH (1) CH654759A5 (enrdf_load_stackoverflow)
DE (1) DE3261368D1 (enrdf_load_stackoverflow)
ES (1) ES8308717A1 (enrdf_load_stackoverflow)
IN (1) IN154985B (enrdf_load_stackoverflow)
ZA (1) ZA824500B (enrdf_load_stackoverflow)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH657287A5 (de) * 1982-09-27 1986-08-29 Escher Wyss Ag Zentrifugensieb.
US4523993A (en) * 1983-06-27 1985-06-18 Resource Associates International Corp. Precious metal recovery apparatus
JPS61163057U (enrdf_load_stackoverflow) * 1985-03-30 1986-10-09
US4986900A (en) * 1989-04-04 1991-01-22 A. Ahlstrom Corporation Sectional screen cylinder
US5264124A (en) * 1992-02-05 1993-11-23 Inter-Source Recovery Systems, Inc. Segmented centrifugal separator scroll housing with removable scroll segments
US6312610B1 (en) * 1998-07-13 2001-11-06 Phase Inc. Density screening outer wall transport method for fluid separation devices
USRE38494E1 (en) 1998-07-13 2004-04-13 Phase Inc. Method of construction for density screening outer transport walls
US6502774B1 (en) 2000-03-08 2003-01-07 J + L Fiber Services, Inc. Refiner disk sensor and sensor refiner disk
US6778936B2 (en) 2000-03-08 2004-08-17 J & L Fiber Services, Inc. Consistency determining method and system
US6752165B2 (en) 2000-03-08 2004-06-22 J & L Fiber Services, Inc. Refiner control method and system
US6938843B2 (en) 2001-03-06 2005-09-06 J & L Fiber Services, Inc. Refiner control method and system
CA2802168A1 (en) * 2001-04-16 2002-10-24 J & L Fiber Services, Inc. Screen cylinder and method
US6755969B2 (en) 2001-04-25 2004-06-29 Phase Inc. Centrifuge
US6706180B2 (en) * 2001-08-13 2004-03-16 Phase Inc. System for vibration in a centrifuge
US6805805B2 (en) * 2001-08-13 2004-10-19 Phase Inc. System and method for receptacle wall vibration in a centrifuge
US20030150782A1 (en) * 2002-02-14 2003-08-14 Chao-Ho Chen Screen for paper pulp
WO2004080601A2 (en) * 2003-03-11 2004-09-23 Phase Inc. Centrifuge with controlled discharge of dense material
US6971525B2 (en) * 2003-06-25 2005-12-06 Phase Inc. Centrifuge with combinations of multiple features
WO2005011833A2 (en) * 2003-07-30 2005-02-10 Phase Inc. Filtration system with enhanced cleaning and dynamic fluid separation
WO2005011848A1 (en) * 2003-07-30 2005-02-10 Phase Inc. Filtration system and dynamic fluid separation method
US7282147B2 (en) * 2003-10-07 2007-10-16 Phase Inc. Cleaning hollow core membrane fibers using vibration
US7104480B2 (en) * 2004-03-23 2006-09-12 J&L Fiber Services, Inc. Refiner sensor and coupling arrangement
JP6195023B2 (ja) * 2014-09-30 2017-09-13 日立工機株式会社 遠心機及び遠心機用スイングロータ
BR102015031647A2 (pt) * 2015-12-17 2017-06-20 Xbc Engenharia Ind E Comercio Ltda Me Process of manufacture of anti-abrasive basic hybrid plates

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3100746A (en) * 1960-04-20 1963-08-13 Inland Steel Co Screening apparatus
US4157966A (en) 1977-06-21 1979-06-12 Hunter Wire Products Limited Centrifuge equipment
CH624315A5 (enrdf_load_stackoverflow) * 1977-07-22 1981-07-31 Escher Wyss Ag

Also Published As

Publication number Publication date
ATE10442T1 (de) 1984-12-15
CA1186656A (en) 1985-05-07
JPS5827659A (ja) 1983-02-18
ES514293A0 (es) 1983-10-01
ZA824500B (en) 1983-04-27
CH654759A5 (de) 1986-03-14
DE3261368D1 (en) 1985-01-10
BR8204275A (pt) 1983-07-19
JPH0148062B2 (enrdf_load_stackoverflow) 1989-10-17
ES8308717A1 (es) 1983-10-01
IN154985B (enrdf_load_stackoverflow) 1984-12-22
AU8637182A (en) 1983-01-27
EP0071012A1 (de) 1983-02-09
AU552647B2 (en) 1986-06-12
US4430221A (en) 1984-02-07

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