EP0216005B1 - Machine à tamiser - Google Patents

Machine à tamiser Download PDF

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Publication number
EP0216005B1
EP0216005B1 EP86105946A EP86105946A EP0216005B1 EP 0216005 B1 EP0216005 B1 EP 0216005B1 EP 86105946 A EP86105946 A EP 86105946A EP 86105946 A EP86105946 A EP 86105946A EP 0216005 B1 EP0216005 B1 EP 0216005B1
Authority
EP
European Patent Office
Prior art keywords
screening
stack
decks
deck
screening machine
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
EP86105946A
Other languages
German (de)
English (en)
Other versions
EP0216005A3 (en
EP0216005A2 (fr
Inventor
Ernst-Heinrich Dr.-Ing. Dressler
Frank Dr.-Ing. Puchalla
Hermann Rieschick
Götz Dr.-Ing. Kneschke
Helmut Tschiltschke
Hartmut Dipl.-Ing. Richter
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.)
Akademie der Wissenschaften der DDR
Original Assignee
Akademie der Wissenschaften der DDR
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 Akademie der Wissenschaften der DDR filed Critical Akademie der Wissenschaften der DDR
Priority to AT86105946T priority Critical patent/ATE70743T1/de
Publication of EP0216005A2 publication Critical patent/EP0216005A2/fr
Publication of EP0216005A3 publication Critical patent/EP0216005A3/de
Application granted granted Critical
Publication of EP0216005B1 publication Critical patent/EP0216005B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B2201/00—Details applicable to machines for screening using sieves or gratings
    • B07B2201/04—Multiple deck screening devices comprising one or more superimposed screens

Definitions

  • the invention relates to a screening machine system for a multi-deck screening machine, designed according to the throwing screening principle, for solving different classification tasks, preferably with separating cuts in the range from 5.0 mm to 0.04 mm, in a closed machine unit.
  • Screening machines are basically divided into throwing screens and plane screens according to their mode of operation.
  • sieve excitation takes place in a component perpendicular to the sieve plane.
  • Flat sieves vibrate in the sieve plane.
  • H. Schubert contains more detailed information on this: Preparation of solid mineral raw materials, Vol. I, VEB German publisher for basic material industry, Leipzig, 3rd edition.
  • Multi-deck screening machines designed as throwing screens are already known. They differ mainly in the type of sieve excitation described above. less in the number of screen decks available. In general, one to a maximum of four-deck screens are offered and used, so that up to 5 grain size classes can be obtained.
  • the limitation of the number of sieve decks is justified by the fact that the sieving capacity decreases with decreasing grain size or mesh size and thus the sieving machine throughput after the sieving capacity of the finest screen must be set.
  • One representative is the Regula cantilever chair from J. Engelsmann AG, FRG, designed as a flat screen, for a classification of, for example, 8 grain size classes, in which the screen decks are not arranged one above the other.
  • Several sieve levels can be arranged vertically in a frame, separated from each other.
  • the disadvantage of this screening machine is that it requires a large amount of space and space.
  • a typical multi-deck sieving machine based on the principle of the plan sieve is the plan classifier for classifying flour into different quality classes.
  • Vibrating rotary screens are also known as multi-deck screening machines, in which the movement of plane and throwing screens is combined. A representative of this is the vibration separator from FBLehmann Maschinenfabrik GmbH, FRG. It performs three-dimensional sieving movements over 2 flywheels and a spring ring and generates up to 5 grain size classes in one machine.
  • a similar machine type is the wobble screening machine, for example from Allgaier-Werke GmbH, FRG, usually with 3 screening decks and 4 grain size classes.
  • the disadvantage of the vibratory round screens is their small available screen area of a maximum of 5 - 6 m2 per screen deck.
  • All of the multi-deck screening machines mentioned have the common disadvantage that the material to be screened is given up via a central task and accordingly its grain size distribution density and the sieve mesh sizes placed on it, in which the sieve surface occupancy of individual sieve decks is overloaded or underloaded and thus the sieving quality or the selectivity of the classification product is impaired.
  • the throwing sieve principle in a multi-deck screening machine reaches its performance limits if, as already described, too high or too low screening surface occupancy occurs on individual screening decks, which leads to losses in the screening quality or the selectivity of the classification process.
  • Obtaining a large number of grain size classes, for example more than 10 in a multi-deck sieving machine leads to losses in throughput and sieving quality in the event of changes in the grain size distribution of a sieving material, ie the sieving machine is underutilized and brings additional quality losses.
  • FIG. 1 shows a cross section through the entire sieve stack of a sieve machine system developed on the basis of a multi-deck sieving machine according to DD 151 882 or EP 028 792, consisting of pre-sieve stack 1, return element 5 and post-sieve stack 4, the sieve stack being longitudinally divided in the middle.
  • the entire stack of sieves is firmly clamped to a multi-deck sieving machine in a vibration-stable and dust-tight manner by means of a steel cable bracing.
  • the feed material is broken down into 5 grain groups:> 63 mm; 0.63 - 0.4 mm; 0.4-0.25mm; 0.25 - 0.16 mm and ⁇ 0.16 mm. Both screen halves are thus covered with the same screen mesh.
  • the grain groups are transported from the discharge side to the feed side opposite to the sieve excitation. It can be seen from FIG. 1 that 2 to 3 grit groups are combined with one another on the right and left half of the sieve.
  • the mesh sizes are 2 mm on the right half of the sieve; 1.6 mm; 1.25 mm; 1 mm; 0.8 mm; 0.63 mm; 0.5 mm and 0.4 mm and the mesh width 0.315 mm on the left half of the sieve; 0.25 mm; 0.2 mm; 0.16 mm; 0.125 mm; 0.1 mm; 0.08mm and 0.063mm.
  • the black arrows indicate the transfer points of grit groups from the feedthroughs to the screen decks of the after-sieve stack 4.
  • the screening machine system is basically the same as in the first, however, the material to be screened is sorted in the following order: pre-screening stacks, return elements, post-screening stacks.
  • the grain size distribution density of the feed material can be matched very precisely to the separation area assignment of the respective mesh sizes and relatively free sieve areas.

Landscapes

  • Combined Means For Separation Of Solids (AREA)
  • Threshing Machine Elements (AREA)
  • Eye Examination Apparatus (AREA)
  • Holo Graphy (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Selective Calling Equipment (AREA)
  • Breeding Of Plants And Reproduction By Means Of Culturing (AREA)

Claims (7)

  1. Système d'appareil de tamisage, réalisé en forme d'appareil de tamisage à plateaux multiples, sur base du principe de tamisage par projection, avec plateaux de tamisage serrés en cadre oscillant, plateaux aveugles et éléments de retour empilés en pile de tamisage, et avec inducteur d'oscillations disposé contre la pile de tamisage, caractérisé en ce que la pile de tamisage consiste en les zones: pile de prétamisage (1), pile de tamisage principal (2), pile de tamisage partiel (3), pile de post-tamisage (4) et élément de retour (5), qui sont mutuellement échangeables et remplaçables et qui peuvent être assemblés en les systèmes:
    - appareil de tamisage à plateaux multiples avec une pile de prétamisage (1), un élément de retour (5) et une pile de posttamisage (4);
    - appareil de tamisage à plateaux multiples avec pile de prétamisage (1); éléments de retour (5) et piles de post-tamisage (4).
  2. Système d'appareil de tamisage selon la revendication 1, caractérisé en ce que jusque sur l'élément de retour chaque zone consiste en au moins un plateau de tamisage et un plateau aveugle, et dans le système à une pile de tamisage principal, celle-ci consiste en au moins cinq plateaux de tamisage et un plateau aveugle.
  3. Système d'appareil de tamisage selon les revendications 1 et 2, caractérisé en ce que les plateaux de tamisage et les plateaux aveugles sont partagés en deux dans le sens de la longueur, et que dans le système à pile de tamisage principal, des tamis de dimensions de maille, ou treillis de tamisage, différents sont disposés de chaque côté d'au moins un plateau de tamisage.
  4. Système d'appareil de tamisage selon les revendications 1 à 3, caractérisé en ce que les plateaux de tamisage et les plateaux aveugles sont empliables l'un en dessous de l'autre dans leur cadre profilé et sont mutuellement isolés.
  5. Système d'appareil de tamisage selon les revendications 1 à 4, caractérisé en ce que les plateaux de tamisage et les plateaux aveugles contiennent des orifices de passage du produit à tamiser du côté de leur entrée et du côté de leur sortie.
  6. Système d'appareil de tamisage selon la revendication 1, caractérisé en ce que la pile de tamisage est serrée dans le cadre oscillant d'une manière résistant aux vibrations et étanche à la poussière au moyen d'un câble d'acler ou de tiges filtées de serrage.
  7. Système d'appareil de tamisage selon la revendication 1, caractérisé en ce que les plateaux de tamisage contiennent dans leur fond des adjuvants de tamisage.
EP86105946A 1985-09-23 1986-04-30 Machine à tamiser Expired - Lifetime EP0216005B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86105946T ATE70743T1 (de) 1985-09-23 1986-04-30 Siebmaschinensystem.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DD85280888A DD256227A3 (de) 1985-09-23 1985-09-23 Siebmaschinensystem
DD280888 1985-09-23

Publications (3)

Publication Number Publication Date
EP0216005A2 EP0216005A2 (fr) 1987-04-01
EP0216005A3 EP0216005A3 (en) 1988-10-12
EP0216005B1 true EP0216005B1 (fr) 1991-12-27

Family

ID=5571487

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86105946A Expired - Lifetime EP0216005B1 (fr) 1985-09-23 1986-04-30 Machine à tamiser

Country Status (5)

Country Link
EP (1) EP0216005B1 (fr)
JP (1) JPS6268575A (fr)
AT (1) ATE70743T1 (fr)
DD (1) DD256227A3 (fr)
DE (1) DE3683110D1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101516531B (zh) † 2006-09-25 2014-05-21 巴斯夫欧洲公司 吸水性聚合物颗粒的分级方法
GB2444996A (en) * 2006-11-22 2008-06-25 Toshiba Res Europ Ltd Inter-Relay Interference Avoidance in a Wireless Communications Network

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD151882A1 (de) * 1979-11-08 1981-11-11 Dressler Ernst Heinrich Mehrdecksiebmaschine
JPS61138574A (ja) * 1984-12-11 1986-06-26 株式会社　サタケ 竪型選別装置の螺旋搬送装置

Also Published As

Publication number Publication date
DD256227A3 (de) 1988-05-04
ATE70743T1 (de) 1992-01-15
DE3683110D1 (de) 1992-02-06
JPS6268575A (ja) 1987-03-28
EP0216005A3 (en) 1988-10-12
EP0216005A2 (fr) 1987-04-01

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