EP1084769A1 - Classifier for sifting granular material - Google Patents
Classifier for sifting granular material Download PDFInfo
- Publication number
- EP1084769A1 EP1084769A1 EP00119531A EP00119531A EP1084769A1 EP 1084769 A1 EP1084769 A1 EP 1084769A1 EP 00119531 A EP00119531 A EP 00119531A EP 00119531 A EP00119531 A EP 00119531A EP 1084769 A1 EP1084769 A1 EP 1084769A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- classifier
- classifying
- solids
- dynamic
- sifting
- 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
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- 239000008187 granular material Substances 0.000 title claims description 3
- 239000007787 solid Substances 0.000 claims description 28
- 230000003068 static effect Effects 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 10
- 238000001035 drying Methods 0.000 description 6
- 230000000007 visual effect Effects 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 235000012054 meals Nutrition 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 241000237858 Gastropoda Species 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method 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 classifying device for classifying granular Well, with a static cascade classifier as a caution chamber, the at least one rotatably arranged in the classifier housing, rod basket provided with turbo elements on the rotor circumference is connected downstream of the dynamic classifier part, with inlets for classifying air / classifying gas and classifiable material and outlets for classifying air / classifying gas, fine material, Medium and coarse goods.
- DE-A-42 23 762 describes a classifying device with an inside a common classifier housing housed a static classifier part without moving components and a dynamic classifier part with rotating Bar basket known.
- the static classifier part is used as a pre-sealing chamber to separate the coarse grain fraction contained in the granular material to be sifted trained, with two from the shaft-shaped classifier housing enclosed and between them forming a visual zone as well as from the Sight air in the cross-flow flow through view zone boundary walls diagonally down towards the discharge opening for the sighted Coarse grain fraction inclined cascade or louvered Have baffles, the two baffle walls and thus the one in between lying visual zone with a deviating from the vertical Angles are arranged obliquely.
- V-classifier Because in the static classifier part Visual air undergoes a V-shaped deflection, this is also referred to as a so-called V-classifier.
- a static V-classifier switched on e.g. B. in a circular grinding plant with a material bed crushing roller press or roller mill, has opted for energy-saving sifting and deagglomeration of the ground material in a single operation proven.
- the invention is therefore based on the object of a classifying device of the generic type with a static classifier part and immediately downstream dynamic classifier part with at least one rotatably arranged Form the rod basket so that the two separator parts are optimal can be operated economically coordinated, in particular in the case of moist visible material, namely the static V-classifier section as pre-classifier and possibly dryer and the dynamic classifier part as an instrument for Final sifting and, if necessary, residual drying.
- the classifying device has a bypass line via which a partial flow the sight air flow or sight gas flow leaving the static classifier part, deducted, for example, in an amount of about 20 to 80% is, so that only a smaller amount of sifting air / sifting gas in the downstream dynamic classifier part arrives with the rod basket which can be dimensioned smaller.
- the one contained in the bypass flow Solid material which is a mixture of middle goods and fines is separated from the bypass flow in an external solids separator and it can represent another product of the classifier. But this is particularly advantageous in the solids separator Bypasstrom separated product via a solid discharge line in the dynamic classifier part (re) introduced to this (re) introduced Product of a final sifting and, if necessary, residual drying in dynamic To undergo classifier part.
- the bypass line from the top of the classifier housing, and the solids separator for the bypass line can then be arranged above the classifying device be, the solid discharge line of the solid separator with Advantage is introduced from above into the dynamic classifier part. It exists but also the possibility of solids discharge from the external solids separator partially or entirely in the static classifier part. There is also the option of using the bypass line instead of from 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 Arrange sifter part.
- the classifying device shown essentially in vertical section 1 has a V-shaped shaft-shaped housing 10 with two enclosed by the classifier housing and one between them Viewing zone 11 forming and of viewing air 12 or hot gas as Drying gas, for example in a cross-flow, through flow zone boundary walls, the diagonally down towards the discharge opening 13 for the selected coarse grain fraction 14 inclined cascade or have baffles 15a and 15b arranged in the manner of blinds, these two baffle walls and thus the one in between lying viewing zone 11 with a deviating from the vertical Angles are arranged obliquely.
- the good 16 to be sifted is placed in the good entry opening 17 on the Top of the static cascade classifier introduced.
- the visible material is viewed in cross flow and good agglomerates are deagglomerated at the same time.
- the visible material is moist 16 such as B. moist cement raw meal, this becomes effective at the same time dried if a hot gas is used as the visible medium becomes.
- perforated ones can also be used Sheets such as sieve sheets etc. are used.
- the rod basket 19 of the dynamic Sifter part in the embodiment of FIG. 1 with a horizontal Axis of rotation, can be dimensioned smaller because the rod basket 19 of the dynamic sifter then only the remaining V-sifter exhaust air reached, which is indicated by the arrow 20.
- the medium grain fraction 22 is carried out, at least one of the both ends of the rotating rod basket 19 by the arrow 23 shown sifting air / sifting gas fine material flow and for the purpose of separating the fine finished goods into a not shown Dedusting device performed.
- the bypass line 18, via which a partial flow of the classifying air Visible gas loaded with solids is withdrawn, whereby it for solids a mixture of a fine grain fraction and Medium grain fraction acts, leads to a separator 24 for separation of the solids 25 contained in the bypass gas stream, from above via line 26 into the dynamic classifier part for the purpose of final sighting and if necessary, residual drying are introduced. But there is also Possibility of solids 25 via line 27 as a separate product deduct.
- the solids 25 can also partially or entirely via line 28 into the feed opening 17 of the static classifier part be introduced.
- the solids separator 24 can be a separating cyclone, a dust filter, a classifier or be a different classifier. In any case, the solids separator 24 the sifting air / sifting gas flow largely freed from solids 29 deducted.
- the bypass line 18a does not work as in Fig. 1 from the top of the classifier housing 10, but from the left housing wall 30 approximately below the rod basket 19.
- This version can also be reintroduced of the solid withdrawn via the bypass line 18a into the dynamic and / or the static classifier part, as shown in FIG. 1 and described.
- a lock 21 for the discharge of the medium grain fraction 22 from the dynamic classifier part a snail, an air conveyor channel, a vibrating channel or a pneumatic one Suction etc. are used.
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
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 classifying device for classifying granular Well, with a static cascade classifier as a caution chamber, the at least one rotatably arranged in the classifier housing, rod basket provided with turbo elements on the rotor circumference is connected downstream of the dynamic classifier part, with inlets for classifying air / classifying gas and classifiable material and outlets for classifying air / classifying gas, fine material, Medium and coarse goods.
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 körnigen 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.DE-A-42 23 762 describes a classifying device with an inside a common classifier housing housed a static classifier part without moving components and a dynamic classifier part with rotating Bar basket known. The static classifier part is used as a pre-sealing chamber to separate the coarse grain fraction contained in the granular material to be sifted trained, with two from the shaft-shaped classifier housing enclosed and between them forming a visual zone as well as from the Sight air in the cross-flow flow through view zone boundary walls diagonally down towards the discharge opening for the sighted Coarse grain fraction inclined cascade or louvered Have baffles, the two baffle walls and thus the one in between lying visual zone with a deviating from the vertical Angles are arranged obliquely. Because in the static classifier part Visual air undergoes a V-shaped deflection, this is also referred to as a so-called V-classifier. Such a static V-classifier, switched on e.g. B. in a circular grinding plant with a material bed crushing roller press or roller mill, has opted for energy-saving sifting and deagglomeration of 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 regrind moist, what z. B. is mostly the case with raw cement meal, So the regrind in the static V-classifier part besides its classifying and Deagglomeration also undergoes drying, if as visual air a hot gas is used, e.g. B. hot exhaust gas from a cement clinker production line. Especially in this case, with due regard to the Drying used relatively large amounts of hot gas or visible gas which are then directly connected to the static V-classifier section dynamic classifier part a correspondingly large dimensioned Rod basket or several such rod baskets of the rod basket sifter make necessary, thereby the economic operation of the dynamic Classifier section, which removes the coarse grain fraction into a medium grain fraction and separated into fines, can be impaired.
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 based on the object of a classifying device of the generic type with a static classifier part and immediately downstream dynamic classifier part with at least one rotatably arranged Form the rod basket so that the two separator parts are optimal can be operated economically coordinated, in particular in the case of moist visible material, namely the static V-classifier section as pre-classifier and possibly dryer and the dynamic classifier part as an instrument for Final sifting 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 classifier device with the Features of claim 1 solved. Advantageous embodiments of the invention are specified 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.It is characteristic of the classifying device according to the invention that from Intermediate area between the static part and the dynamic part the classifier device has a bypass line via which a partial flow the sight air flow or sight gas flow leaving the static classifier part, deducted, for example, in an amount of about 20 to 80% is, so that only a smaller amount of sifting air / sifting gas in the downstream dynamic classifier part arrives with the rod basket which can be dimensioned smaller. The one contained in the bypass flow Solid material, which is a mixture of middle goods and fines is separated from the bypass flow in an external solids separator and it can represent another product of the classifier. But this is particularly advantageous in the solids separator Bypasstrom separated product via a solid discharge line in the dynamic classifier part (re) introduced to this (re) introduced Product of a final sifting and, if necessary, residual drying in dynamic To undergo classifier 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 from the top of the classifier housing, and the solids separator for the bypass line can then be arranged above the classifying device be, the solid discharge line of the solid separator with Advantage is introduced from above into the dynamic classifier part. It exists but also the possibility of solids discharge from the external solids separator partially or entirely in the static classifier part. There is also the option of using the bypass line instead of from 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 Arrange sifter part.
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 exemplary embodiments shown schematically in the figures 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 classifying 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 classifying device shown essentially in vertical section
1 has 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 good 16 to be sifted is placed in the good entry opening 17 on the
Top of the static cascade classifier introduced. In case or
when the material slides over 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 classifying 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.2, the
Claims (6)
dadurch gekennzeichnet, daß vom Zwischenbereich zwischen dem statischen Teil und dem dynamischen Teil der Sichtereinrichtung zum Abzug eines Teilstroms des Sichtluftstroms/Sichtgasstroms eine Bypassleitung (18, 18a) abgeht, die zu einem Feststoffabscheider (24) zum Abtrennen der im Bypassgasstrom enthaltenen Feststoffe und/oder zu einer weiteren Prozeßstufe zur Weiterverarbeitung dieses Bypassstromes führt.Sifting device for sifting granular material, with a static cascade sifter as a precaution chamber (11), which is followed by at least one rod basket (19) of a dynamic classifier part rotatably arranged in the safety housing (10) and provided with turbo elements on the rotor circumference, with inlets for classifying air / classifying gas and Visible material and outlets for classifying air / classifying gas, fines, medium and coarse goods,
characterized in that a bypass line (18, 18a) leads from the intermediate area between the static part and the dynamic part of the classifying device for withdrawing a partial flow of the classifying air flow / classifying gas flow, which leads to a solids separator (24) for separating the solids and / or contained in the bypass gas flow leads to a further process stage for the further processing of this bypass stream.
dadurch gekennzeichnet, daß der Feststoffaustrag (25) des Feststoffabscheiders (24) über eine Feststoffaustragsleitung (26) in den dynamischen Sichterteil führt zwecks Wiedereinführung wenigstens der Grobkornanteile des abgeschiedenen Feststoffs - getrennt von der Sichtluft/dem Sichtgas - in die Sichtereinrichtung.Sifter 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 for the purpose of reintroducing at least the coarse-grained fractions of the separated solids - separated from the classifying air / classifying gas - into the classifying device.
dadurch gekennzeichnet, daß die Bypassleitung (18) von der Oberseite des Sichtergehäuses (10) abgeht und der Feststoffabscheider (24) oberhalb der Sichtereinrichtung angeordnet ist, und daß die Feststoffaustragsleitung (25) des Feststoffabscheiders (24) von oben in den dynamischen Sichterteil und/oder in den statischen Sichterteil eingeführt ist.Sifter device according to claims 1 or 2,
characterized in that the bypass line (18) extends from the top of the classifier housing (10) and the solids separator (24) is arranged above the classifier device, and in that the solids discharge line (25) of the classifier separator (24) from above into the dynamic classifier part and / or is introduced into the static classifier part.
dadurch gekennzeichnet, daß die Bypassleitung (18a) von der Seitenwandung (30) des Sichtergehäuses (10) abgeht und der Feststoffabscheider unterhalb des dynamischen Sichterteils angeordnet ist.Sifter device according to claims 1 or 2,
characterized in that the bypass line (18a) extends from the side wall (30) of the classifier housing (10) and the solids separator is arranged below the dynamic classifier part.
dadurch gekennzeichnet, daß die Drehachse des wenigstens einen im dynamischen Sichterteil rotierbar angeordneten Stabkorbs (19) horizontal, vertikal oder schräg geneigt angeordnet ist.Sifter 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) rotatably arranged in the dynamic classifier part is arranged horizontally, vertically or obliquely.
dadurch gekennzeichnet, daß die Sichtereinrichtung (10) mit dem Feststoffabscheider (24) für die Bypassleitung (18, 18a) zu einer kompakten Baueinheit zusammengefaßt ist.Sifter device according to claims 1 to 5,
characterized in that the classifying device (10) with the solids separator (24) for the bypass line (18, 18a) is combined 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 |
|---|---|---|---|
| DE19944421A DE19944421A1 (en) | 1999-09-16 | 1999-09-16 | Classifying device for classifying granular material |
| DE19944421 | 1999-09-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1084769A1 true EP1084769A1 (en) | 2001-03-21 |
| EP1084769B1 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 (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006089326A1 (en) * | 2005-02-23 | 2006-08-31 | Andreas Reitmeir | Device for the separation of material mixtures |
| CN105899295A (en) * | 2013-12-11 | 2016-08-24 | Khd洪保德韦达克有限公司 | Closed-circuit grinding plant having a pre-classifier and a ball mill |
| WO2020104528A1 (en) * | 2018-11-23 | 2020-05-28 | Khd Humboldt Wedag Gmbh | Multiple separators which are pneumatically connected to one another |
| CN113102248A (en) * | 2021-03-30 | 2021-07-13 | 安徽捷迅光电技术有限公司 | Dust absorption feeder hopper |
Families Citing this family (21)
| 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 |
| 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 |
| CN104192580A (en) * | 2014-07-30 | 2014-12-10 | 蒙永华 | Grain elevator for grain collection and warehousing on grain drying ground |
| 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 |
| CN106560256A (en) * | 2015-10-02 | 2017-04-12 | 江苏鹏飞集团股份有限公司 | Airflow classifier |
| 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 |
| DE102023133760B3 (en) * | 2023-12-04 | 2025-05-08 | Khd Humboldt Wedag Gmbh | Static cascade separator with downwardly widened profile |
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| DE837981C (en) * | 1950-02-10 | 1952-05-05 | Edmond Harvengt | Process and device for dry dedusting of coal and similar substances |
| DE4223762A1 (en) | 1992-07-18 | 1994-01-20 | Kloeckner Humboldt Deutz Ag | Bulk grain classifier with reduced wear - comprising pre-classifier chamber having inlet for grains and outlet for coarse grains |
| JPH06106134A (en) * | 1992-09-28 | 1994-04-19 | Ishikawajima Harima Heavy Ind Co Ltd | Multi-stage wind power classifier |
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2000
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- 2000-09-07 DK DK00119531T patent/DK1084769T3/en active
- 2000-09-07 EP EP00119531A patent/EP1084769B1/en not_active Expired - Lifetime
- 2000-09-15 US US09/662,296 patent/US6347707B1/en not_active Expired - Lifetime
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| DE837981C (en) * | 1950-02-10 | 1952-05-05 | Edmond Harvengt | Process and device for dry dedusting of coal and similar substances |
| DE4223762A1 (en) | 1992-07-18 | 1994-01-20 | Kloeckner Humboldt Deutz Ag | Bulk grain classifier with reduced wear - comprising pre-classifier chamber having inlet for grains and outlet for coarse grains |
| JPH06106134A (en) * | 1992-09-28 | 1994-04-19 | Ishikawajima Harima Heavy Ind Co Ltd | Multi-stage wind power classifier |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006089326A1 (en) * | 2005-02-23 | 2006-08-31 | Andreas Reitmeir | Device for the separation of material mixtures |
| CN105899295A (en) * | 2013-12-11 | 2016-08-24 | Khd洪保德韦达克有限公司 | Closed-circuit grinding plant having a pre-classifier and a ball mill |
| WO2020104528A1 (en) * | 2018-11-23 | 2020-05-28 | Khd Humboldt Wedag Gmbh | Multiple separators which are pneumatically connected to one another |
| CN113102248A (en) * | 2021-03-30 | 2021-07-13 | 安徽捷迅光电技术有限公司 | Dust absorption feeder hopper |
Also Published As
| Publication number | Publication date |
|---|---|
| DK1084769T3 (en) | 2004-11-15 |
| DE19944421A1 (en) | 2001-03-22 |
| US6347707B1 (en) | 2002-02-19 |
| EP1084769B1 (en) | 2004-07-28 |
| DE50007183D1 (en) | 2004-09-02 |
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