EP1786573B1 - Vorrichtung zum sichten von aufgabegut - Google Patents

Vorrichtung zum sichten von aufgabegut Download PDF

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Publication number
EP1786573B1
EP1786573B1 EP06791672A EP06791672A EP1786573B1 EP 1786573 B1 EP1786573 B1 EP 1786573B1 EP 06791672 A EP06791672 A EP 06791672A EP 06791672 A EP06791672 A EP 06791672A EP 1786573 B1 EP1786573 B1 EP 1786573B1
Authority
EP
European Patent Office
Prior art keywords
sifter
width
static
aerating
dynamic
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.)
Not-in-force
Application number
EP06791672A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1786573A1 (de
Inventor
Ludwig KÖNNING
Egbert Burchardt
Olaf Hagemeier
Franz-Josef Zurhove
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.)
ThyssenKrupp Industrial Solutions AG
Original Assignee
Polysius 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
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Application filed by Polysius AG filed Critical Polysius AG
Publication of EP1786573A1 publication Critical patent/EP1786573A1/de
Application granted granted Critical
Publication of EP1786573B1 publication Critical patent/EP1786573B1/de
Not-in-force 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
    • B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
    • B07B9/02—Combinations of similar or different apparatus for separating solids from solids using gas currents
    • 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
    • B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
    • B07B4/08—Separating solids from solids by subjecting their mixture to gas currents while the mixtures are supported by sieves, screens, or like mechanical elements

Definitions

  • the invention relates to a static-dynamic sifter for sifting feedstock with a static sifter having an inclined to the vertical aligned, traversed by classifying gas ventilation floor and a downstream dynamic classifier.
  • a sifter for sifting granular material having a rod sifter and an upstream, shaft-shaped cascade sifter.
  • This cascade classifier has two inclined to the vertical, opposite and between them a caution zone forming Schachtbegrenzungscolour, which are permeable to the reformulation.
  • the shaft boundary walls are formed by inclined, louvre-like baffles, which are traversed by view air across.
  • the cascade classifier is operated in circulatory operation with a good bed roller mill, wherein the baffles serve for deagglomerating, ie for unlocking the slugs formed in the high-bed roller mill.
  • the feed material is fed from above the cascade classifier and falls over the staircase-like baffles down and is thereby deagglomerated and sighted.
  • the fines, along with the classifying air, are fed to the rod cage sifter while the coarse components are led down.
  • the dimensioning of the feed to the separator takes place on the basis of the Gutströme to be handled and provides compact narrow mass flows compared to the classifier.
  • the requirements for a high visual efficiency demand on the one hand the limitation of the feed quantity per classifier width and on the other hand a sufficient number of - from material flow direction - sequentially switched sight levels of the cascade.
  • Another important factor influencing the visual efficiency is the uniformity of the width distribution of the visible material and the classifying air. With wider classifiers, this uniformity is more difficult to realize, which is why the number of vision stages increases with size.
  • the width / height ratio is therefore about 0.15 and increases to about 0.35 for larger quantities.
  • a sifting device for sifting granular material which comprises a static cascade classifier with at least one viewing zone enclosed by the shaft-shaped viewing housing and an angle deviating from the vertical and a dynamic rod cage sifter.
  • the peculiarity is that viewed in plan view, the sortgasseintrittsgephaseuse the viewing device has a flow branching on two strands in the manner of a bifurcated tube, wherein in both bifurcated tube housing branches a cantilevered rod basket is arranged.
  • a static cascade classifier is arranged in each of the two branch pipe branch branches.
  • a common cascade classifier is provided before the branch.
  • a cleaning machine which comprises two static visors connected in series and a separator.
  • the DE-A-101 37 132 relates to a sifter with a chute, a first classifier, a riser, a second classifier and a separator. Both classification levels are designed as static viewing levels.
  • the invention has for its object to significantly reduce the height of a static-dynamic classifier and improve the visual efficiency of static-dynamic classifiers with different throughputs.
  • the inventive static-dynamic sifter for sifting feed essentially consists of a static sifter which has a ventilation floor oriented obliquely to the vertical, through which viewing gas flows, an inlet opening for discharging the feed material onto the aeration floor, an outlet opening for the coarse material, a downstream dynamic one Classifier comprising at least one rotor and an outlet opening for the fine gas laden sighting gas.
  • the aeration bottom has a ratio of width to vertical height of at least 0.45, preferably of at least 0.6.
  • a device for distributing the feed over the width of the ventilation floor is further provided. Furthermore, the static sifter expediently preceded by means for deagglomerating.
  • the surface of the ventilation floor is flat and provided with ventilation openings, in particular ventilation slots.
  • the ventilation floor is inclined at an angle between 20 ° and 70 °, preferably between 30 ° and 60 °, to the vertical.
  • the ventilation floors of the devices differ in the context of a series for different throughputs only in the width and not in the vertical height of each other. This causes in addition to the already much more favorable ratio of width to vertical height and then no increase in height, if the device must be designed with a higher throughput.
  • the in the FIGS. 1 to 3 shown static-dynamic classifier 100 for sifting of feed material consists essentially of a static classifier 1, which is oriented obliquely to the vertical, by the sighting gas 2 can be flowed through aeration bottom 1a, an inlet opening 3 for the task of the feed material 9 on the ventilation floor, an outlet opening 4 for the Grobgut, a downstream dynamic classifier 5, which comprises at least one rotor 5a, and at least one outlet opening 6 for the loaded with fines sighting gas 2 '.
  • the ventilation base 1a is inclined at an angle ⁇ between 20 ° and 70 °, preferably between 30 ° and 60 °, to the vertical.
  • the surface of the ventilation floor 1a is flat and provided with ventilation openings 1b, in particular ventilation slots (see Fig. 3 ).
  • the static sifter 1 and the dynamic sifter 5 are housed in a common housing 7, wherein the dynamic sifter in the in Fig. 1 shown side view is arranged obliquely above the ventilation floor.
  • the feed material 9 supplied via the inlet opening 3 slides down over the ventilation floor 1a and is traversed transversely by the viewing gas.
  • the Fine material of the feed material is carried with the classifying gas 2 to the dynamic classifier, which comprises one or more rotors, in particular rod baskets.
  • the rejected in the region of the rotor medium grain fraction is passed through a disposed within the housing return 8 to the outlet opening 4 for the coarse material.
  • the rotor is expediently mounted on both sides and can correspond in its width to the width of the ventilation floor. It would also be conceivable that the width of the rotor is larger or in particular smaller than the width of the ventilation floor is formed.
  • a housing transition piece is provided between the static and dynamic classifier, which connects the housing sections of the housing 7 of different widths in the area of the static classifier or the dynamic classifier.
  • the static-dynamic classifier 100 is shown for viewing with a good bed roller mill 200.
  • the static-dynamic sifter 100 also comprises a device 101 for distributing the feed material across the width of the aeration bottom 1a and means 102 for deagglomerating the material returned from the good-bed roller mill 200 to the static-dynamic sifter.
  • a first embodiment of a device 101 for distributing the feed over the width of the ventilation floor is shown.
  • This device consists in the illustrated embodiment of baffles which are arranged in the feed chute 7a of the housing 7.
  • the baffles 101 a are designed so that they distribute the feed material 9, which is placed over conveyor 10 in a certain width, to the width b of the ventilation floor 1a.
  • the device 101 is formed by a vibrating groove 101'a.
  • a bellows breaker 102a is used Fig. 10 in consideration, which is conveniently placed below the Goodbettwalzenmühle 200.
  • a blast wheel 102'a according to Fig. 9 conceivable.
  • the mass flow of the feed material on the aeration bottom 1a decreases from top to bottom, since during the residence more and more fines are discharged with the classifying air. This reduces the flow resistance of the feed material in the direction of the outlet opening 4 for the coarse material. So that the classifying air can nevertheless flow uniformly through the feed material, the aeration bottom is designed such that it produces a pressure drop of 2 mbar to 8 mbar, preferably 3 mbar to 4 mbar.
  • the static-dynamic classifier described above is distinguished by the fact that the aeration bottoms 1a of classifiers for a different throughput rate differ only in the width b and not in the vertical height h from each other. This means that the static-dynamic classifier only increases in width, while the overall height remains essentially the same. This, in turn, means that the visual efficiency is substantially the same for classifiers with different throughputs, since, unlike conventional devices, the dwell time, which is essentially determined by the vertical height, remains unchanged.
  • the width of the dynamic rotor is preferably changed linearly with the width of the static ventilation floor.
  • the width of the rotor may differ in principle from the width of the static stage.
  • the requirements in the final grinding and partial finishing with partial Fertiggutausschleusung in the production process are fundamentally different, so that here fixed combinations of different width static and dynamic classifier can be used.
  • the viewing spaces of the static and dynamic stages are then connected via transition pieces if necessary.
  • the air outlet speed from the aeration floor is chosen so high that the feed material is predominantly held in suspension and only the coarse material touches the ventilation floor. This also prevents the material clogging the ventilation holes and deposits.
  • air velocities should be set at the outlet openings 1b of the aeration bottom of at least 20 m / s, preferably 30 m / s.
  • the static-dynamic classifier according to the invention is characterized by a high visual efficiency and, in comparison to the known cascade classifiers, requires a substantially smaller structural height, which saves costs.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Disintegrating Or Milling (AREA)
  • Crushing And Grinding (AREA)
  • Glass Compositions (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Soil Working Implements (AREA)
EP06791672A 2005-09-23 2006-08-25 Vorrichtung zum sichten von aufgabegut Not-in-force EP1786573B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005045591A DE102005045591A1 (de) 2005-09-23 2005-09-23 Vorrichtung zum Sichten von Aufgabegut
PCT/EP2006/008363 WO2007036276A1 (de) 2005-09-23 2006-08-25 Vorrichtung zum sichten von aufgabegut

Publications (2)

Publication Number Publication Date
EP1786573A1 EP1786573A1 (de) 2007-05-23
EP1786573B1 true EP1786573B1 (de) 2010-06-09

Family

ID=37309365

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06791672A Not-in-force EP1786573B1 (de) 2005-09-23 2006-08-25 Vorrichtung zum sichten von aufgabegut

Country Status (11)

Country Link
US (1) US20080185318A1 (pt)
EP (1) EP1786573B1 (pt)
JP (1) JP5491029B2 (pt)
CN (1) CN101272871B (pt)
AT (1) ATE470514T1 (pt)
BR (1) BRPI0616336A8 (pt)
CA (1) CA2623147C (pt)
DE (2) DE102005045591A1 (pt)
DK (1) DK1786573T3 (pt)
ES (1) ES2344022T3 (pt)
WO (1) WO2007036276A1 (pt)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014056974A1 (de) 2012-10-10 2014-04-17 Thyssenkrupp Resource Technologies Gmbh Mahlanlage
DE102012109645A1 (de) 2012-10-10 2014-05-15 Thyssenkrupp Resource Technologies Gmbh Sichter

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007021545B4 (de) 2007-05-08 2011-07-28 Polysius AG, 59269 Vorrichtung und Verfahren zum Sichten von Aufgabegut und Mahlanlage
DE102011055762B4 (de) 2011-11-28 2014-08-28 Maschinenfabrik Köppern GmbH & Co KG Vorrichtung zum Sichten von körnigem Gut und Mahlanlage
CN111659619B (zh) * 2020-07-09 2023-11-21 贵州师范大学 一种用于分离苔藓及土壤的分筛装置及其使用方法
CN112076835B (zh) * 2020-09-07 2021-04-06 德州中联大坝水泥有限公司 一种水泥生产制备工艺

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014056974A1 (de) 2012-10-10 2014-04-17 Thyssenkrupp Resource Technologies Gmbh Mahlanlage
DE102012109645A1 (de) 2012-10-10 2014-05-15 Thyssenkrupp Resource Technologies Gmbh Sichter
DE102012109644A1 (de) 2012-10-10 2014-05-15 Thyssenkrupp Resource Technologies Gmbh Mahlanlage
DE102012109644B4 (de) * 2012-10-10 2016-02-11 Thyssenkrupp Industrial Solutions Ag Mahlanlage
US9630214B2 (en) 2012-10-10 2017-04-25 Thyssenkrupp Industrial Solutions Ag Grinding mill
DE102012109645B4 (de) 2012-10-10 2018-11-29 Thyssenkrupp Industrial Solutions Ag Sichter

Also Published As

Publication number Publication date
DK1786573T3 (da) 2010-10-04
CA2623147C (en) 2015-09-29
DE102005045591A1 (de) 2007-03-29
DE502006007156D1 (de) 2010-07-22
JP5491029B2 (ja) 2014-05-14
BRPI0616336A2 (pt) 2011-06-14
US20080185318A1 (en) 2008-08-07
WO2007036276A1 (de) 2007-04-05
ATE470514T1 (de) 2010-06-15
JP2009508680A (ja) 2009-03-05
BRPI0616336A8 (pt) 2015-04-28
CA2623147A1 (en) 2007-04-05
ES2344022T3 (es) 2010-08-16
CN101272871A (zh) 2008-09-24
CN101272871B (zh) 2013-03-06
EP1786573A1 (de) 2007-05-23

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