EP1084769B1 - Classifier for sifting granular material - Google Patents
Classifier for sifting granular material Download PDFInfo
- Publication number
- EP1084769B1 EP1084769B1 EP00119531A EP00119531A EP1084769B1 EP 1084769 B1 EP1084769 B1 EP 1084769B1 EP 00119531 A EP00119531 A EP 00119531A EP 00119531 A EP00119531 A EP 00119531A EP 1084769 B1 EP1084769 B1 EP 1084769B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- classifier
- solids
- dynamic
- separator
- gas
- 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
Links
- 239000008187 granular material Substances 0.000 title claims 2
- 239000007787 solid Substances 0.000 claims description 26
- 230000003068 static effect Effects 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 11
- 230000000007 visual effect Effects 0.000 description 8
- 238000001035 drying Methods 0.000 description 6
- 239000004568 cement Substances 0.000 description 3
- 235000012054 meals Nutrition 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/10—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone
- B02C23/12—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone with return of oversize material to crushing or disintegrating zone
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
- B02C23/24—Passing gas through crushing or disintegrating zone
- B02C23/32—Passing gas through crushing or disintegrating zone with return of oversize material to crushing or disintegrating zone
-
- 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
- B07B4/02—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall
-
- 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
- B07B4/02—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall
- B07B4/04—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall in cascades
-
- 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
- B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
- B07B7/08—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force
- B07B7/083—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force generated by rotating vanes, discs, drums, or brushes
-
- 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
Definitions
- the invention relates to a sifter for the sighting of granular Well, with a static cascade classifier as a custody chamber, the at least one rotatably arranged in the classifier housing, Bar cage provided with turbo elements on the rotor circumference downstream of the dynamic classifier section, with inlets for classifying air / classifying gas and visible goods and outlets for classifying air / classifying gas, fine material, Medium and coarse material.
- From DE-A-42 23 762 is a classifier with an inside a common view housing housed static sifter part without moving components and a dynamic separator with rotating Bar basket known.
- the static separator part is a custody chamber for the separation of the coarse grain fraction contained in the grained Good to be seen formed with two of the shaft-shaped classifier housing enclosed and between them a visual zone forming and of the Viewing air in crossflow flowed through visual zone boundary walls, the obliquely downward towards the discharge opening for the selected Coarse grain fraction inclined cascading or arranged like a jalousie Have baffles, wherein the two Leitblechand and thus the between lying visual zone with a deviating from the vertical Angle are arranged obliquely.
- V-classifier Because in the static separator part the Visual air experiences a V-shaped deflection, this is also referred to as a so-called V-classifier.
- V-classifier switched on z. B. in a Kreislaufmahlstrom with a Gutbettzerklein mecanics roller press or roller mill, has been chosen for energy-saving views and deagglomerating the ground material in a single operation proven.
- the invention is therefore the object of a sifter the generic type with static separator part and immediately downstream dynamic separator part arranged with at least one rotatable Bar basket in such a way that the two sifter parts optimally can be operated economically in concert, in particular with moist visible goods, namely the static V-classifier as a precautionary and if necessary dryer and the dynamic separator as an instrument for Finishing and, if necessary, residual drying.
- Characteristic of the separator device according to the invention is that of Intermediate area between the static part and the dynamic part the separator device bypasses a bypass line via which a partial flow of the static sifter leaving the static sifter part or sight gas flow, For example, deducted in an amount of about 20 to 80% is, so that only a smaller amount of reformulation / reformgas in the downstream dynamic sifter part with the bar cage passes, the can be dimensioned smaller.
- the contained in the bypass current Solid material which is a mixture of medium and fine material is separated from the bypass stream in an external solids separator and it may represent another product of the classifier.
- the bypass line of go off the top of the classifier housing, and the solids separator for the bypass line can then be arranged above the sifter be, wherein the Feststoffaustragstechnisch the solids separator with Advantage is introduced from above into the dynamic separator part. It exists but also the possibility of the solids discharge of the external Feststoffabscheiders partially or wholly into the static separator part. It is also possible to use the bypass line instead of the top to let go of a side wall of the classifier housing and the solids separator for the bypass line possibly below the dynamic To arrange sifter parts.
- the sizing device shown essentially in vertical section 1 shows a V-shaped shaft-shaped housing 10 with two enclosed by the classifier housing and one between them Visual zone 11 forming and of classifying air 12 and hot gas as Drying gas approximately in cross-flow flow through visual zone boundary walls, which slopes downwards towards the discharge opening 13 for the selected coarse grain fraction 14 inclined cascade-like or louver-like arranged baffles 15a and 15b, these two baffle walls and thus the between them lying viewing zone 11 with a deviating from the vertical Angle are arranged obliquely.
- the goods to be sighted 16 is in the Guteintragsö réelle 17 at the Top of the static cascade sifter introduced.
- the material to be sighted is sighted in cross flow and good agglomerates are simultaneously deagglomerated.
- moist visible goods 16 such.
- B. wet cement raw meal this is effective at the same time dried when a hot gas is used as the visual medium becomes.
- the baffle walls 15a and 15b can also be perforated Sheets such as screen plates, etc. are used.
- the middle grain fraction 22 is discharged via at least one of both end faces of the rotating rod basket 19 by the arrow 23, visual air / classifying gas fine material stream drawn off and for the purpose of separating the fine finished good to a not shown Dedusting device out.
- the bypass line 18, via which a partial flow of the classifying air of the Viewing gas laden with solids is withdrawn, where it is in the solids, a mixture of a fine grain fraction and Mittelkornfr bankruptcy acts leads to a separator 24 for separating the solids 25 contained in the bypass gas stream, from above via line 26 into the dynamic separator section for the purpose of finishing and if necessary, residual drying can be introduced. But there is also the Possibility of solids 25 via line 27 as a separate product deducted.
- the solids 25 can also be partially or completely via line 28 into the material feed opening 17 of the static sifter part be introduced.
- the solids separator 24 may be a separator cyclone, a dust filter, a sifter or to act a different classifier.
- the bypass line 18a is not as in Fig. 1 from the top of the classifier housing 10, but from the left housing 30 about below the bar basket 19. There is also the possibility of reintroduction in this version of the withdrawn via the bypass line 18a solid in the dynamic and / or the static separator part, as shown in Fig. 1 and described.
- lock 21 for the discharge of the medium grain fraction 22 from the dynamic separator part can be a screw, an air conveyor trough, a vibrating trough or a pneumatic one Extraction etc. are used.
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Combined Means For Separation Of Solids (AREA)
Description
Die Erfindung betrifft eine Sichtereinrichtung zur Sichtung von körnigem Gut, mit einem statischen Kaskadensichter als Vorsichtungskammer, der wenigstens ein im Sichtergehäuse rotierbar angeordneter, am Rotorumfang mit Turboelementen versehener Stabkorb eines dynamischen Sichterteils nachgeschaltet ist, mit Einlässen für Sichtluft/Sichtgas und Sichtgut und Auslässen für Sichtluft/Sichtgas, Feingut, Mittelgut und Grobgut.The invention relates to a sifter for the sighting of granular Well, with a static cascade classifier as a custody chamber, the at least one rotatably arranged in the classifier housing, Bar cage provided with turbo elements on the rotor circumference downstream of the dynamic classifier section, with inlets for classifying air / classifying gas and visible goods and outlets for classifying air / classifying gas, fine material, Medium and coarse material.
Aus der DE-A-42 23 762 ist eine Sichtereinrichtung mit einem innerhalb eines gemeinsamen Sichtgehäuses untergebrachten statischen Sichterteil ohne bewegte Bauteile und einem dynamischen Sichterteil mit rotierendem Stabkorb bekannt. Dabei ist der statische Sichterteil als Vorsichtungskammer zur Abtrennung der im zu sichtenden kömigen Gut enthaltenen Grobkornfraktion ausgebildet, mit zwei vom schachtförmigen Sichtergehäuse umschlossenen und zwischen sich eine Sichtzone bildenden sowie von der Sichtluft im Querstrom durchströmten Sichtzonenbegrenzungswänden, die schräg nach unten in Richtung zur Austragsöffnung für die ausgesichtete Grobkornfraktion geneigte kaskadenartig bzw. jalousieartig angeordnete Leitbleche aufweisen, wobei die beiden Leitblechwände und damit die dazwischen liegende Sichtzone mit einem von der Vertikalen abweichenden Winkel schrägliegend angeordnet sind. Weil im statischen Sichterteil die Sichtluft eine V-förmige Umlenkung erfährt, spricht man hierbei auch von einem sogenannten V-Sichter. Ein solcher statischer V-Sichter, eingeschaltet z. B. in eine Kreislaufmahlanlage mit einer Gutbettzerkleinerungs-Walzenpresse bzw. Walzenmühle, hat sich für das energiesparende Sichten und Desagglomerieren des Mahlgutes in einem einzigen Arbeitsgang bewährt.From DE-A-42 23 762 is a classifier with an inside a common view housing housed static sifter part without moving components and a dynamic separator with rotating Bar basket known. The static separator part is a custody chamber for the separation of the coarse grain fraction contained in the grained Good to be seen formed with two of the shaft-shaped classifier housing enclosed and between them a visual zone forming and of the Viewing air in crossflow flowed through visual zone boundary walls, the obliquely downward towards the discharge opening for the selected Coarse grain fraction inclined cascading or arranged like a jalousie Have baffles, wherein the two Leitblechwände and thus the between lying visual zone with a deviating from the vertical Angle are arranged obliquely. Because in the static separator part the Visual air experiences a V-shaped deflection, this is also referred to as a so-called V-classifier. Such a static V-classifier, switched on z. B. in a Kreislaufmahlanlage with a Gutbettzerkleinerungs roller press or roller mill, has been chosen for energy-saving views and deagglomerating the ground material in a single operation proven.
Ist das Mahlgut feucht, was z. B. bei Zementrohmehl meistens der Fall ist, so kann das Mahlgut im statischen V-Sichterteil außer seiner Sichtung und Desagglomerierung auch noch eine Trocknung erfahren, wenn als Sichtluft ein Heißgas eingesetzt wird, z. B. heißes Abgas einer Zementklinkerproduktionslinie. Besonders in diesem Fall müssen mit Rücksicht auf die Trocknung verhältnismäßig große Heißgas- bzw. Sichtgasmengen eingesetzt werden, die dann in dem dem statischen V-Sichterteil unmittelbar angeschlossenen dynamischen Sichterteil einen entsprechend groß dimesionierten Stabkorb oder mehrere solcher Stabkörbe des Stabkorbsichters erforderlich machen, wodurch der wirtschaftliche Betrieb des dynamischen Sichterteils, der das von der Grobkornfraktion befreite Sichtgut in eine Mittelkornfraktion und in Feingut auftrennt, beeinträchtigt werden kann.Is the millbase moist, what z. B. in cement raw meal is usually the case, so the regrind in the static V-classifier except his sighting and Deagglomeration also experienced a drying, if as a classifying air a hot gas is used, for. B. hot exhaust from a cement clinker production line. Especially in this case, with regard to the Drying relatively large amounts of hot gas or visible gas used which are then directly connected to the static V-classifier dynamic separator part a correspondingly large dimesionierten Bar basket or several such bar baskets of the rod basket sifter necessitate the economic operation of the dynamic Classifier, which removes the grain removed from the coarse grain fraction into a mid-grain fraction and finely divided, can be affected.
Der Erfindung liegt daher die Aufgabe zugrunde, eine Sichtereinrichtung der gattungsgemäßen Art mit statischem Sichterteil und unmittelbar nachgeschaltetem dynamischen Sichterteil mit wenigstens einem rotierbar angeordneten Stabkorb so auszubilden, daß die beiden Sichterteile optimal aufeinander abgestimmt wirtschaftlich betrieben werden können, insbesondere bei feuchtem Sichtgut, nämlich der statische V-Sichterteil als Vorsichter und ggf. Trockner und der dynamische Sichterteil als Instrument zur Fertigsichtung und ggf. Resttrocknung.The invention is therefore the object of a sifter the generic type with static separator part and immediately downstream dynamic separator part arranged with at least one rotatable Bar basket in such a way that the two sifter parts optimally can be operated economically in concert, in particular with moist visible goods, namely the static V-classifier as a precautionary and if necessary dryer and the dynamic separator as an instrument for Finishing and, if necessary, residual drying.
Diese Aufgabe wird erfindungsgemäß mit einer Sichtereinrichtung mit den Merkmalen des Anspruchs 1 gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen angegeben.This object is achieved with a sifter with the Characteristics of claim 1 solved. Advantageous embodiments of the invention are given in the subclaims.
Charakteristisch für die erfindungsgemäße Sichtereinrichtung ist, daß vom Zwischenbereich zwischen dem statischen Teil und dem dynamischen Teil der Sichtereinrichtung eine Bypassleitung abgeht, über die ein Teilstrom des den statischen Sichterteil verlassenden Sichtluftstroms bzw. Sichtgasstroms, z B. in einem Mengenumfang von etwa 20 bis 80% abgezogen wird, so daß nur noch eine kleinere Menge an Sichtluft/Sichtgas in den nachgeschalteten dynamischen Sichterteil mit dem Stabkorb gelangt, der dadurch kleiner dimensioniert werden kann. Das im Bypassstrom enthaltene Feststoffmaterial, welches ein Gemisch von Mittelgut und Feingut sein wird, wird in einem externen Feststoffabscheider vom Bypassstrom abgetrennt und es kann ein weiteres Produkt der Sichtereinrichtung darstellen. Mit besonderem Vorteil wird aber dieses im Feststoffabscheider vom Bypasstrom abgetrennte Produkt über eine Feststoffaustragsleitung in den dynamischen Sichterteil (wieder) eingeführt, um dieses (wieder) eingeführte Produkt einer Fertigsichtung und ggf. Resttrocknung im dynamischen Sichterteil zu unterziehen.Characteristic of the separator device according to the invention is that of Intermediate area between the static part and the dynamic part the separator device bypasses a bypass line via which a partial flow of the static sifter leaving the static sifter part or sight gas flow, For example, deducted in an amount of about 20 to 80% is, so that only a smaller amount of Sichtluft / Sichtgas in the downstream dynamic sifter part with the bar cage passes, the can be dimensioned smaller. The contained in the bypass current Solid material, which is a mixture of medium and fine material is separated from the bypass stream in an external solids separator and it may represent another product of the classifier. But with particular advantage, this is in the solids from the Bypasstrom separated product via a Feststoffaustragsleitung in the dynamic separator (re) introduced to this (re) introduced Product of a final classification and possibly residual drying in dynamic To undergo a sifter part.
Nach einem weiteren Merkmal der Erfindung kann die Bypassleitung von der Oberseite des Sichtergehäuses abgehen, und der Feststoffabscheider für die Bypassleitung kann dann oberhalb der Sichtereinrichtung angeordnet sein, wobei die Feststoffaustragsleitung des Feststoffabscheiders mit Vorteil von oben in den dynamischen Sichterteil eingeführt ist. Es besteht aber auch die Möglichkeit, den Feststoffaustrag des externen Feststoffabscheiders teilweise oder ganz in den statischen Sichterteil einzuführen. Außerdem besteht die Möglichkeit, die Bypassleitung statt von der Oberseite von einer Seitenwandung des Sichtergehäuses abgehen zu lassen und den Feststoffabscheider für die Bypassleitung ggf. unterhalb des dynamischen Sichterteils anzuordnen.According to a further feature of the invention, the bypass line of go off the top of the classifier housing, and the solids separator for the bypass line can then be arranged above the sifter be, wherein the Feststoffaustragsleitung the solids separator with Advantage is introduced from above into the dynamic separator part. It exists but also the possibility of the solids discharge of the external Feststoffabscheiders partially or wholly into the static separator part. It is also possible to use the bypass line instead of the top to let go of a side wall of the classifier housing and the solids separator for the bypass line possibly below the dynamic To arrange sifter parts.
Die Erfindung und deren weitere Merkmale und Vorteile werden anhand der in den Figuren schematisch dargestellten Ausführungsbeispiele näher erläutert. The invention and its further features and advantages are based on the embodiments shown schematically in the figures closer explained.
Es zeigt:
- Fig. 1:
- eine erste Ausführungsform der erfindungsgemäßen Sichtereinrichtung, und
- Fig. 2:
- eine zweite Ausführungsform als Variante zu Figur 1.
- Fig. 1:
- a first embodiment of the separator device according to the invention, and
- Fig. 2:
- A second embodiment as a variant of Figure 1.
Die im wesentlichen im Vertikalschnitt dargestellte Sichtereinrichtung
der Figur 1 weist ein V-förmiges schachtförmiges Gehäuse 10 auf mit
zwei vom Sichtergehäuse umschlossenen und zwischen sich eine
Sichtzone 11 bildenden sowie von Sichtluft 12 bzw. Heißgas als
Trocknungsgas etwa im Querstrom durchströmten Sichtzonenbegrenzungswänden,
die schräg nach unten in Richtung zur Austragsöffnung
13 für die ausgesichtete Grobkornfraktion 14 geneigte kaskadenartig
bzw. jalousieartig angeordnete Leitbleche 15a und 15b aufweisen,
wobei diese beiden Leitblechwände und damit die dazwischen
liegende Sichtzone 11 mit einem von der Vertikalen abweichenden
Winkel schräg liegend angeordnet sind.The sizing device shown essentially in vertical section
1 shows a V-shaped shaft-
Das zu sichtende Gut 16 wird in die Guteintragsöffnung 17 an der
Oberseite des statischen Kaskadensichters eingeführt. Beim Fall bzw.
beim Rutschen des Gutes über die Leitblechwand 15a des Kaskadensichters
wird das Sichtgut im Querstrom gesichtet und Gutagglomerate
werden gleichzeitig desagglomeriert. Bei feuchtem Sichtgut
16 wie z. B. feuchtem Zementrohmehl wird dieses gleichzeitig wirkungsvoll
getrocknet, wenn als Sichtmedium ein Heißgas eingesetzt
wird. Statt der Leitblechwände 15a und 15b können auch perforierte
Bleche wie Siebbleche etc. eingesetzt werden.The goods to be sighted 16 is in the
Von der Oberseite des Zwischenbereichs zwischen dem statischen
Teil und dem dynamischen Teil der erfindungsgemäßen Sichtereinrichtung
geht eine Bypassleitung 18 ab, über die ein Teilstrom des
Sichtluft- bzw. Sichtgasstroms, der bereits von der Grobkornfraktion
befreit ist, abgezogen wird. Daher kann der Stabkorb 19 des dynamischen
Sichterteils, im Ausführungsbeispiel der Fig. 1 mit horizontaler
Drehachse, kleiner dimensioniert werden, weil zum Stabkorb 19 des
dynamischen Sichters dann nur noch die restliche V-Sichter-Abluft
gelangt, die durch den Pfeil 20 angezeigt ist. Während an der Peripherie
des rotierenden Stabkorbs 19 über eine Schleuse 21 die Mittelkornfraktion
22 ausgetragen wird, wird über wenigstens eine der
beiden Stirnseiten des rotierenden Stabkorbs 19 der durch den Pfeil
23 dargestellte Sichtluft/Sichtgas-Feingut-Strom abgezogen und
zwecks Abscheidung des feinen Fertigguts zu einer nicht dargestellten
Entstaubungseinrichtung geführt.From the top of the intermediate area between the static
Part and the dynamic part of the separator device according to the invention
goes from a
Die Bypassleitung 18, über welche ein Teilstrom der Sichtluft des
Sichtgases beladen mit Feststoffen abgezogen wird, wobei es sich
bei den Feststoffen um ein Gemisch aus einer Feinkornfraktion und
Mittelkornfraktion handelt, führt zu einem Abscheider 24 zum Abtrennen
der im Bypassgasstrom enthaltenen Feststoffe 25, die von oben
über Leitung 26 in den dynamischen Sichterteil zwecks Fertigsichtung
und ggf. Resttrocknung eingeführt werden. Es besteht aber auch die
Möglichkeit, die Feststoffe 25 über Leitung 27 als ein eigenes Produkt
abzuziehen. Die Feststoffe 25 können aber auch teilweise oder ganz
über Leitung 28 in die Gutaufgabeöffnung 17 des statischen Sichterteils
eingeführt werden. Beim Feststoffabscheider 24 kann es sich um
einen Abscheideszyklon, um ein Staubfilter, um einen Sichter oder
um ein anderes Klassiergerät handeln. Jedenfalls wird vom Feststoffabscheider
24 der von Feststoffen weitgehend befreite Sichtluft/Sichtgas-Strom
29 abgezogen.The
Beim Ausführungsbeispiel der Fig. 2 geht die Bypassleitung 18a nicht
wie bei Fig. 1 von der Oberseite des Sichtergehäuses 10 ab, sondern
von der linken Gehäusewandung 30 etwa unterhalb des Stabkorbs
19. Auch bei dieser Version besteht die Möglichkeit der Wiedereinführung
des über die Bypassleitung 18a abgezogenen Feststoffs in den
dynamischen und/oder den statischen Sichterteil, wie bei Fig. 1 gezeigt
und beschrieben. Als Schleuse 21 zum Austrag der Mittelkornfraktion
22 aus dem dynamischen Sichterteil können eine Schnecke,
eine Luftförderrinne, eine Vibrorinne oder auch eine pneumatische
Absaugung etc. eingesetzt werden.In the embodiment of Fig. 2, the
Claims (6)
- Classifier device for classifying granular material, having a static cascade classifier as pre-classification chamber (11), downstream of which is connected at least one rod basket (19), which is arranged rotatably in the classifier casing (10) and is provided with turbine components on the rotor circumference, of a dynamic classifier part, having inlets for classification air/gas and material to be classified and outlets for classification air/gas, fine material, medium material and coarse material, characterized in that a bypass line (18, 18a) branches off from the intermediate region between the static part and the dynamic part of the classifier device for extracting a partial stream of the classification air/gas stream and leads to a solids separator (24) for separating off the solids contained in the bypass gas stream and/or to a further process stage for further processing of this bypass stream.
- Classifier device according to Claim 1, characterized in that the solids discharge (25) of the solids separator (24) leads, via a solids discharge line (26), into the dynamic classifier part in order for at least the coarse grain fractions of the solids that have been separated out to be reintroduced - separately from the classification air/gas - into the classifier device.
- Classifier device according to Claim 1 or 2, characterized in that the bypass line (18) branches off from the topside of the classifier casing (10), and the solids separator (24) is arranged above the classifier device, and in that the solids discharge line (26) of the solids separator (24) is introduced into the dynamic classifier part and/or into the static classifier part from above.
- Classifier device according to Claim 1 or 2, characterized in that the bypass line (18a) branches off from the side wall (30) of the classifier casing (10), and the solids separator is arranged below the dynamic classifier part.
- Classifier device according to one or more of Claims 1 to 4, characterized in that the axis of rotation of the at least one rod basket (19) arranged rotatably in the dynamic classifier part is arranged horizontally, vertically or with an oblique inclination.
- Classifier device according to Claims 1 to 5, characterized in that the classifier device (10) is combined with the solids separator (24) for the bypass line (18, 18a) to form a compact structural unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK00119531T DK1084769T3 (en) | 1999-09-16 | 2000-09-07 | Sorting device for sorting grained material |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19944421 | 1999-09-16 | ||
| DE19944421A DE19944421A1 (en) | 1999-09-16 | 1999-09-16 | Classifying device for classifying granular material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1084769A1 EP1084769A1 (en) | 2001-03-21 |
| EP1084769B1 true EP1084769B1 (en) | 2004-07-28 |
Family
ID=7922249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00119531A Expired - Lifetime EP1084769B1 (en) | 1999-09-16 | 2000-09-07 | Classifier for sifting granular material |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US6347707B1 (en) |
| EP (1) | EP1084769B1 (en) |
| DE (2) | DE19944421A1 (en) |
| DK (1) | DK1084769T3 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104192580A (en) * | 2014-07-30 | 2014-12-10 | 蒙永华 | Grain elevator for grain collection and warehousing on grain drying ground |
| CN106560256A (en) * | 2015-10-02 | 2017-04-12 | 江苏鹏飞集团股份有限公司 | Airflow classifier |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19948725A1 (en) * | 1999-10-09 | 2001-04-12 | Kloeckner Humboldt Wedag | Grinding plant |
| DE10119977A1 (en) * | 2001-04-24 | 2002-10-31 | Kloeckner Humboldt Wedag | Production of cement clinker from raw meal comprises adding average grain fraction of an additive from a circulatory grinding device to the raw meal |
| DE10142162A1 (en) * | 2001-08-29 | 2003-03-20 | Kloeckner Humboldt Wedag | Sifter for sifting granular material |
| US7267233B2 (en) * | 2004-01-07 | 2007-09-11 | Eastman Chemical Company | In-line classifier for powdered products |
| WO2006089326A1 (en) * | 2005-02-23 | 2006-08-31 | Andreas Reitmeir | Device for the separation of material mixtures |
| RU2295398C1 (en) * | 2005-09-22 | 2007-03-20 | Злобин Михаил Николаевич | Chamber-type air separator |
| DE102005045591A1 (en) * | 2005-09-23 | 2007-03-29 | Polysius Ag | Raw material e.g. granular material, separating device for use in grinding plant, has static separator with aeration base through which gas flows, where base is arranged in vertical direction and has specific ratio of breadth to height |
| DE102005053617A1 (en) * | 2005-11-10 | 2007-06-14 | Khd Humboldt Wedag Gmbh | Classifying device for sifting granular material |
| RU2302911C1 (en) * | 2006-01-10 | 2007-07-20 | Михаил Николаевич Злобин | Chamber-type air separator |
| RU2307714C1 (en) * | 2006-03-06 | 2007-10-10 | Михаил Николаевич Злобин | Loose material chamber-type air separator |
| USD555989S1 (en) | 2006-06-05 | 2007-11-27 | Dean Sais | Archaeological equipment sifter |
| USD571168S1 (en) | 2007-08-16 | 2008-06-17 | Dean Sais | Archaeological equipment sifter |
| RU2382683C1 (en) * | 2008-12-23 | 2010-02-27 | Валерий Владимирович Рудаков | Method of mineral dressing |
| US9085014B2 (en) * | 2011-03-23 | 2015-07-21 | Carter Day International, Inc. | Vertical drop product cleaner with perforated intake manifold |
| DE102011055762B4 (en) | 2011-11-28 | 2014-08-28 | Maschinenfabrik Köppern GmbH & Co KG | Device for sifting granular material and grinding plant |
| DE102013020888A1 (en) * | 2013-12-11 | 2015-06-11 | Khd Humboldt Wedag Gmbh | Kreislaufmahlanlage with caution and ball mill |
| DE102015104340A1 (en) * | 2015-03-23 | 2016-09-29 | Maschinenfabrik Gustav Eirich Gmbh & Co. Kg | Molding sand coolers |
| CN105107744A (en) * | 2015-08-14 | 2015-12-02 | 广西大学 | Grain fullness separation device |
| DE102018129538B4 (en) * | 2018-11-23 | 2020-10-01 | Khd Humboldt Wedag Gmbh | Pneumatically interconnected multiple sifter |
| FR3105029A1 (en) * | 2019-12-23 | 2021-06-25 | Air Comprime Francais - Vit Co | DEVICE FOR DEDUSTING A DRY MEDIA AND INSTALLATION FOR DEDUSTING A MEDIA IMPLEMENTING SUCH A DEVICE |
| CN111167589B (en) * | 2020-01-10 | 2021-03-19 | 湘潭玉峰新材料科技有限公司 | Dry sand making process |
| CN113102248A (en) * | 2021-03-30 | 2021-07-13 | 安徽捷迅光电技术有限公司 | Dust absorption feeder hopper |
| DE102023133760B3 (en) * | 2023-12-04 | 2025-05-08 | Khd Humboldt Wedag Gmbh | Static cascade separator with downwardly widened profile |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE837981C (en) * | 1950-02-10 | 1952-05-05 | Edmond Harvengt | Process and device for dry dedusting of coal and similar substances |
| US3972808A (en) * | 1974-03-25 | 1976-08-03 | Manley Bros. Of Indiana, Inc. | Pneumatic classifier with particle removal system |
| EP0298914B1 (en) * | 1987-07-03 | 1991-10-30 | Ciba-Geigy Ag | Spray dryer for making powder agglomerates or the like |
| CH679839A5 (en) * | 1988-07-01 | 1992-04-30 | Aspa Zuerich Ag | |
| US4853112A (en) * | 1988-07-25 | 1989-08-01 | Victor Brown | Low velocity air classifier |
| DE4035160A1 (en) * | 1990-11-06 | 1992-05-07 | Buehler Gmbh | Rising sifter for loose bulk material - has accurately controlled flow speed through by=pass and measuring probes |
| DE4223762B4 (en) | 1992-07-18 | 2009-07-23 | Khd Humboldt Wedag Gmbh | Classifying device for sifting granular material and circulation grinding plant with the involvement of such a sifting device |
| JPH06106134A (en) * | 1992-09-28 | 1994-04-19 | Ishikawajima Harima Heavy Ind Co Ltd | Multi-stage wind power classifier |
| JP3262212B2 (en) * | 1997-03-11 | 2002-03-04 | レオン自動機株式会社 | Method and apparatus for replenishing powder to powder feeder and powder feeder |
-
1999
- 1999-09-16 DE DE19944421A patent/DE19944421A1/en not_active Withdrawn
-
2000
- 2000-09-07 DK DK00119531T patent/DK1084769T3/en active
- 2000-09-07 EP EP00119531A patent/EP1084769B1/en not_active Expired - Lifetime
- 2000-09-07 DE DE50007183T patent/DE50007183D1/en not_active Expired - Lifetime
- 2000-09-15 US US09/662,296 patent/US6347707B1/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104192580A (en) * | 2014-07-30 | 2014-12-10 | 蒙永华 | Grain elevator for grain collection and warehousing on grain drying ground |
| CN106560256A (en) * | 2015-10-02 | 2017-04-12 | 江苏鹏飞集团股份有限公司 | Airflow classifier |
Also Published As
| Publication number | Publication date |
|---|---|
| DE50007183D1 (en) | 2004-09-02 |
| US6347707B1 (en) | 2002-02-19 |
| EP1084769A1 (en) | 2001-03-21 |
| DK1084769T3 (en) | 2004-11-15 |
| DE19944421A1 (en) | 2001-03-22 |
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