EP0370267A2 - Device for feeding material to a subassembly - Google Patents

Device for feeding material to a subassembly Download PDF

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Publication number
EP0370267A2
EP0370267A2 EP89120028A EP89120028A EP0370267A2 EP 0370267 A2 EP0370267 A2 EP 0370267A2 EP 89120028 A EP89120028 A EP 89120028A EP 89120028 A EP89120028 A EP 89120028A EP 0370267 A2 EP0370267 A2 EP 0370267A2
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EP
European Patent Office
Prior art keywords
air inlet
material feed
plant part
inlet duct
roller mill
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
Application number
EP89120028A
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German (de)
French (fr)
Other versions
EP0370267B1 (en
EP0370267A3 (en
Inventor
Dietmar Holsiepe
Ludger Lohnherr
Hans-Dieter Dipl.-Ing. Grudno
Bernhard Zigan
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ThyssenKrupp Industrial Solutions AG
Original Assignee
Krupp Polysius AG
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Publication date
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Publication of EP0370267A2 publication Critical patent/EP0370267A2/en
Publication of EP0370267A3 publication Critical patent/EP0370267A3/en
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Publication of EP0370267B1 publication Critical patent/EP0370267B1/en
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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
    • B02C23/02—Feeding devices
    • 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
    • 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
    • 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
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
    • B02C2015/002—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs combined with a classifier

Definitions

  • the invention relates to a device (according to the preamble of claim 1) for feeding material of different grain to a plant part, in particular a comminution machine.
  • the material to be comminuted is fed to the grinding chamber via a material feed chamber designed as a chute or shaft, from which the entire material supplied reaches the region of the comminution members.
  • the material crushed in the grinding chamber, together with the fine fractions already contained in the feed material, is then pneumatically fed to a classifier arranged above the mill.
  • the invention is based on the object of designing a device of the type required in the preamble of claim 1 in such a way that a substantial increase in performance of the system part downstream of the material feed device, in particular a comminution machine, is achieved.
  • the fine fractions contained in the feed material are sighted out of the feed material by means of an air stream already in the material feed space, ie even before reaching the downstream plant part (for example a comminution machine), and bypassing the plant part to the finished product guided.
  • the downstream plant part for example a comminution machine
  • the idea of the invention can advantageously be used in system parts operated with negative pressure, in which the air stream used to classify the feed material is sucked into the material feed chamber from the surroundings.
  • the invention can also be used in system parts which are operated with normal pressure or under positive pressure.
  • a fan is used to guide the air flow used to classify the feed material to the material feed chamber.
  • the plant part loaded with the pre-sifted feed material can be a comminution machine, for example a roller mill or a material bed roller mill.
  • a comminution machine for example a roller mill or a material bed roller mill.
  • the material feed space is generally formed by a material feed chute and in the case of a material bed roller mill by a material feed shaft.
  • the plant part loaded with pre-sifted material can also be formed by a sifter, for example.
  • a sifter for example.
  • Vor sighting to a significant relief of the classifier which results in a considerable increase in performance and an improvement in the selectivity.
  • the roller mill schematically illustrated in FIG. 1 with an integrated classifier contains, in a housing 1, a roller mill 2 (only shown schematically) (with an annular grinding path 3 and drive 4) and a static classifier 5 with guide vanes 6, coarse material cone 7 and pendulum flap 8.
  • the material to be shredded is fed to the roller mill 2 via a material feed chute 9 to which two air inlet ducts 10, 11 are connected in the region of the bottom of the sloping lower chute part.
  • the lower inlet openings of these air inlet channels 10 and 11 are provided with slides, as shown in FIGS. 2 and 3 in detail.
  • the air inlet opening 10 a of the upper air inlet duct 10 is limited by means of two laterally (arrows 12) adjustable sliders 13, 14. By adjusting these sliders 13, 14, not only the size but also the spatial position of the effective air inlet opening 10a can be set.
  • the size of the air inlet opening 11a of the lower air inlet duct 11 can be adjusted by means of a slide 15 which extends over the entire width of this air inlet duct 11.
  • a gas stream (arrow 16), preferably furnace gas, is drawn in through a nozzle ring 18 by means of a fan connected to the nozzle 17 of the housing 1 and, together with the one discharged over the edge of the grinding track 3, is sufficiently comminuted Well directed to classifier 5 (arrows 19).
  • the coarse material precipitates in the classifier 5 and is returned to the grinding path 3 via the cone 7 and the pendulum flap 8, while the fine material leaves the classifier through the nozzle 17 (arrow 20).
  • the material feed chute 9 through the feed material passing through the material feed chute 9 (arrow 21), two air flows are sucked through in cross flow, which are fed through the air inlet channels 10 and 11.
  • the fine and ultra-fine fractions contained in the feed material are detected by these sifting air flows (arrows 22, 23) and, together with the material sufficiently comminuted by the roller mill 2, are fed directly to the classifier 5.
  • the fine and ultra-fine fractions already aligned in the material feed chute 9 in this way from the material supplied do not take the detour via the roller mill in this way, but are fed directly to the finished product via the classifier 5.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Drying Of Solid Materials (AREA)
  • Disintegrating Or Milling (AREA)

Abstract

Die Erfindung betrifft eine Vorrichtung zur Materialzuführung zu einem Anlagenteil, beispielsweise einer Zerkleinerungsmaschine, wobei aus dem den Materialzuführraum durchsetzenden Aufgabematerial die Feinanteile mittels eines Luftstromes ausgesichtet werden. Auf diese Weise läßt sich eine wesentliche Leistungssteigerung des Anlagenteiles erreichen.The invention relates to a device for feeding material to a plant part, for example a comminution machine, the fine particles being selected from the feed material passing through the material feed chamber by means of an air stream. In this way, a significant increase in performance of the plant part can be achieved.

Description

Die Erfindung betrifft eine Vorrichtung (entsprechend dem Oberbegriff des Ansprüches 1) zur Zuführung von Material unterschiedlicher Körnung zu einem Anlagen­teil, insbesondere einer Zerkleinerungsmaschine.The invention relates to a device (according to the preamble of claim 1) for feeding material of different grain to a plant part, in particular a comminution machine.

Bei Zerkleinerungsmaschinen, beispielsweise bei Rollen­mühlen mit darüber angeordnetem Sichter, erfolgt die Zuführung des zu zerkleinernden Materiales zum Mahl­raum über einen als Schurre oder Schacht ausgebildeten Materialzuführraum, aus dem das gesamte zugeführte Ma­terial in den Bereich der Zerkleinerungsorgane gelangt.In the case of comminution machines, for example in roller mills with a classifier arranged above them, the material to be comminuted is fed to the grinding chamber via a material feed chamber designed as a chute or shaft, from which the entire material supplied reaches the region of the comminution members.

Das im Mahlraum zerkleinerte Material wird dann zusam­men mit den bereits im aufgegebenen Material enthaltenen Feinanteilen in der Regel pneumatisch einem über der Mühle angeordneten Sichter zugeführt.The material crushed in the grinding chamber, together with the fine fractions already contained in the feed material, is then pneumatically fed to a classifier arranged above the mill.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrich­tung der im Oberbegriff des Ansprüches 1 vorausgesetzten Art so auszubilden, daß eine wesentliche Leistungsstei­gerung des der Materialzuführvorrichtung nachgeschalte­ten Anlagenteiles, insbesondere einer Zerkleinerungs­maschine, erreicht wird.The invention is based on the object of designing a device of the type required in the preamble of claim 1 in such a way that a substantial increase in performance of the system part downstream of the material feed device, in particular a comminution machine, is achieved.

Diese Aufgabe wird erfindungsgemäß durch das kennzeich­nende Merkmal des Ansprüches 1 gelöst. Zweckmäßige Aus­gestaltungen der Erfindung sind Gegenstand der Unter­ansprüche.This object is achieved by the characterizing feature of claim 1. Appropriate embodiments of the invention are the subject of the dependent claims.

Erfindungsgemäß werden die im Aufgabematerial enthalte­nen Feinanteile bereits im Materialzuführraum, d. h. noch vor Erreichen des nachgeschalteten Anlagenteiles (beispielsweise einer Zerkleinerungsmaschine), aus dem Aufgabematerial mittels eines Luftstromes ausgesichtet und unter Umgehung des Anlagenteiles dem Fertiggut zu­ geführt. Bei den der Erfindung zugrunde liegenden Ver­suchen zeigte sich, daß sich auf diese Weise bei Rollen­mühlen Leistungssteigerungen von über 10 % erzielen lassen, wenn man durch eine solche Luftstromsichtung des Aufgabemateriales vermeidet, daß die eigentlich bereits ins Fertiggut gehörenden Fein- und Feinstantei­le nochmals übermahlen werden.According to the invention, the fine fractions contained in the feed material are sighted out of the feed material by means of an air stream already in the material feed space, ie even before reaching the downstream plant part (for example a comminution machine), and bypassing the plant part to the finished product guided. In the experiments on which the invention is based, it was found that in this way it is possible to achieve performance increases of more than 10% in roller mills if one avoids such an air flow screening of the feed material that the fine and very fine fractions which actually already belong in the finished product are overgrown again.

Die Aussichtung der Fein- und Feinstanteile aus dem Aufgabematerial ergibt auch ein stabileres Mahlbett, da ein hoher Anteil von Feinstanteilen im Mahlbett zu einer Destabilisierung des Mahlbettes und einer Ver­ringerung der Mahlleistung führt.Viewing the fine and ultra-fine fractions from the feed material also results in a more stable grinding bed, since a high proportion of fine fractions in the milling bed leads to destabilization of the milling bed and a reduction in the grinding capacity.

Der Erfindungsgedanke kann vorteilhaft bei mit Unter­druck betriebenen Anlagenteilen Verwendung finden, bei denen der zur Sichtung des Aufgabemateriales dienende Luftstrom aus der Umgebung in den Materialzuführraum angesaugt wird.The idea of the invention can advantageously be used in system parts operated with negative pressure, in which the air stream used to classify the feed material is sucked into the material feed chamber from the surroundings.

Die Erfindung ist jedoch auch bei Anlagenteilen ver­wendbar, die mit Normaldruck oder unter Überdruck be­trieben werden. Hierbei findet ein Ventilator Verwen­dung, um den zur Sichtung des Aufgabemateriales die­nenden Luftstrom dem Materialzuführraum zuzuleiten.However, the invention can also be used in system parts which are operated with normal pressure or under positive pressure. Here, a fan is used to guide the air flow used to classify the feed material to the material feed chamber.

Der mit dem vorgesichteten Aufgabematerial beschickte Anlagenteil kann eine Zerkleinerungsmaschine, bei­spielsweise eine Rollenmühle oder eine Gutbett-Walzen­mühle sein. Bei einer Rollenmühle wird der Materialzu­führraum im allgemeinen durch eine Materialaufgabe­schurre und bei einer Gutbett-Walzenmühle durch einen Materialaufgabeschacht gebildet.The plant part loaded with the pre-sifted feed material can be a comminution machine, for example a roller mill or a material bed roller mill. In the case of a roller mill, the material feed space is generally formed by a material feed chute and in the case of a material bed roller mill by a material feed shaft.

Der mit vorgesichtetem Material beschickte Anlagenteil kann erfindungsgemäß beispielsweise auch durch einen Sichter gebildet werden. Auch hierbei trägt die Vor­ sichtung zu einer wesentlichen Entlastung des Sichters bei, die eine beachtliche Leistungssteigerung und eine Verbesserung der Trennschärfe zur Folge hat.According to the invention, the plant part loaded with pre-sifted material can also be formed by a sifter, for example. Here too the Vor sighting to a significant relief of the classifier, which results in a considerable increase in performance and an improvement in the selectivity.

Ein Ausführungsbeispiel der Erfindung ist in der Zeich­nung veranschaulicht. Es zeigen

  • Fig. 1 einen schematischen Querschnitt durch eine Rollenmühle mit Sichter und der er­findungsgemäßen Materialzuführung,
  • Fig. 2+3 Aufsichten auf die beiden Lufteintritts­kanäle der Materialzuführvorrichtung.
An embodiment of the invention is illustrated in the drawing. Show it
  • 1 shows a schematic cross section through a roller mill with classifier and the material feed according to the invention,
  • Fig. 2 + 3 plan views of the two air inlet channels of the material feed device.

Die in Fig. 1 schematisch veranschaulichte Rollenmühle mit integriertem Sichter enthält in einem Gehäuse 1 eine nur schematisch veranschaulichte Rollenmühle 2 (mit ringförmiger Mahlbahn 3 und Antrieb 4) sowie einen statischen Sichter 5 mit Leitschaufeln 6, Grobgut-Ko­nus 7 und Pendelklappe 8.The roller mill schematically illustrated in FIG. 1 with an integrated classifier contains, in a housing 1, a roller mill 2 (only shown schematically) (with an annular grinding path 3 and drive 4) and a static classifier 5 with guide vanes 6, coarse material cone 7 and pendulum flap 8.

Die Zuführung des zu zerkleinernden Materiales zur Rollenmühle 2 erfolgt über eine Materialaufgabeschurre 9, an die im Bereich des Bodens des schräg verlaufen­den unteren Schurrenteiles zwei Lufteintrittskanäle 10, 11 angeschlossen sind.The material to be shredded is fed to the roller mill 2 via a material feed chute 9 to which two air inlet ducts 10, 11 are connected in the region of the bottom of the sloping lower chute part.

Die unteren Eintrittsöffnungen dieser Lufteintritts­kanäle 10 und 11 sind mit Schiebern versehen, wie die Fig. 2 und 3 im einzelnen zeigen.The lower inlet openings of these air inlet channels 10 and 11 are provided with slides, as shown in FIGS. 2 and 3 in detail.

Die Lufteintrittsöffnung 10 a des oberen Lufteintritts­kanales 10 wird mittels zweier seitlich (Pfeile 12) verstellbarer Schieber 13, 14 begrenzt. Durch Einstel­lung dieser Schieber 13, 14 kann nicht nur die Größe, sondern auch die räumliche Lage der wirksamen Luftein­trittsöffnung 10a eingestellt werden.The air inlet opening 10 a of the upper air inlet duct 10 is limited by means of two laterally (arrows 12) adjustable sliders 13, 14. By adjusting these sliders 13, 14, not only the size but also the spatial position of the effective air inlet opening 10a can be set.

Die Lufteintrittsöffnung 11a des unteren Lufteintritts­kanales 11 läßt sich in ihrer Größe mittels eines über die ganze Breite dieses Lufteintrittskanales 11 reichen­den Schiebers 15 einstellen.The size of the air inlet opening 11a of the lower air inlet duct 11 can be adjusted by means of a slide 15 which extends over the entire width of this air inlet duct 11.

Im Betrieb der in Fig. 1 veranschaulichten Rollenmühle wird ein Gasstrom (Pfeil 16), vorzugsweise Ofengas, mittels eines an den Stutzen 17 dem Gehäuses 1 ange­schlossenen Ventilators durch einen Düsenring 18 ange­saugt und zusammen mit dem über den Rand der Mahlbahn 3 ausgetragenen, genügend zerkleinerten Gut zum Sichter 5 geleitet (Pfeile 19). Im Sichter 5 fällt das Grobgut aus und wird über den Konus 7 und die Pendelklappe 8 zur Mahlbahn 3 zurückgeführt, während das Feingut den Sich­ter durch den Stutzen 17 verläßt (Pfeil 20).In the operation of the roller mill illustrated in FIG. 1, a gas stream (arrow 16), preferably furnace gas, is drawn in through a nozzle ring 18 by means of a fan connected to the nozzle 17 of the housing 1 and, together with the one discharged over the edge of the grinding track 3, is sufficiently comminuted Well directed to classifier 5 (arrows 19). The coarse material precipitates in the classifier 5 and is returned to the grinding path 3 via the cone 7 and the pendulum flap 8, while the fine material leaves the classifier through the nozzle 17 (arrow 20).

Erfindungsgemäß werden nun durch dar die Materialauf­gabeschurre 9 durchsetzende Aufgabematerial (Pfeil 21) zwei Luftströme im Querstrom hindurchgesaugt, die durch die Lufteintrittskanäle 10 und 11 zugeführt werden. Die im Aufgabegut enthaltenen Fein- und Feinstanteile wer­den von diesen Sichtluftströmen erfaßt (Pfeile 22, 23) und zusammen mit dem von der Rollenmühle 2 hinreichend zerkleinerten Gut unmittelbar dem Sichter 5 zugeleitet. Die aus dem aufgegebenen Material auf diese Weise be­reits in der Materialaufgabeschurre 9 ausgesichteten Fein- und Feinstanteile nehmen auf diese Weise nicht den Umweg über die Rollenmühle, sondern werden über den Sichter 5 direkt dem Fertiggut zugeführt.According to the invention, through the feed material passing through the material feed chute 9 (arrow 21), two air flows are sucked through in cross flow, which are fed through the air inlet channels 10 and 11. The fine and ultra-fine fractions contained in the feed material are detected by these sifting air flows (arrows 22, 23) and, together with the material sufficiently comminuted by the roller mill 2, are fed directly to the classifier 5. The fine and ultra-fine fractions already aligned in the material feed chute 9 in this way from the material supplied do not take the detour via the roller mill in this way, but are fed directly to the finished product via the classifier 5.

Claims (11)

1. Vorrichtung zur Zuführung von Material unterschied­licher KÖrnung zu einem Anlagenteil, enthaltend einen vom Material durchsetzten Materialzuführraum, gekennzeichnet durch eine Einrichtung zur Einführung wenigstens eines die Feinanteile aus dem Material aussichtenden Luftstromes in den Materialzuführraum.1. Device for supplying material of different grain size to a plant part, containing a material feed space penetrated by the material, characterized by a device for introducing at least one air stream that looks out the fine particles from the material into the material feed space. 2. Vorrichtung nach Anspruch 1, gekennzeichnet durch einen mit Unterdruck betriebenen, den Luftstrom aus der Umgebung in den Materialzuführraum an saugenden Anlagenteil.2. Device according to claim 1, characterized by a vacuum operated, the air flow from the environment in the material feed chamber at the sucking plant part. 3. Vorrichtung nach Anspruch 1, gekennzeichnet durch einen mit Normaldruck oder Überdruck betriebenen An­lagenteil sowie einen Ventilator zur Zuführung des Luftstromes zum Materialzuführraum.3. Device according to claim 1, characterized by a system part operated with normal pressure or positive pressure and a fan for supplying the air flow to the material supply space. 4. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Anlagenteil durch eine Zerkleinerungsma­schine gebildet wird.4. The device according to claim 1, characterized in that the plant part is formed by a comminution machine. 5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß der Anlagenteil durch eine Rollenmühle (2) und der Materialzuführraum durch eine Materialaufgabeschurre (9) gebildet wird.5. The device according to claim 4, characterized in that the plant part is formed by a roller mill (2) and the material feed space by a material feed chute (9). 6. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß der Anlagenteil durch eine Gutbett-Walzenmühle und der Materialzuführraum durch einen Materialauf­gabeschacht gebildet wird.6. The device according to claim 4, characterized in that the plant part is formed by a material bed roller mill and the material feed space by a material feed shaft. 7. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß der Anlagenteil durch einen Sichter gebidet wird.7. The device according to claim 7, characterized in that the plant part is bidided by a classifier. 8. Vorrichtung nach Anspruch 5, dadurch gekennzeich­net, daß an dem Boden der Materialaufgabeschurre (9) wenigstens ein Lufteintrittskanal (10, 11) an­geschlossen ist.8. The device according to claim 5, characterized in that at least one air inlet duct (10, 11) is connected to the bottom of the material feed chute (9). 9. Vorrichtung nach Anspruch 8, dadurch gekennzeich­net, daß an die Materialaufgabeschurre (9) wenig­stens zwei in unterschiedlicher Höhe angeordnete Lufteintrittskanäle (10,11) angeschlossen sind.9. The device according to claim 8, characterized in that at least two air inlet channels (10, 11) arranged at different heights are connected to the material feed chute (9). 10. Vorrichtung nach Anspruch 9, dadurch gekennzeich­net, daß die Größe und räumliche Lage der wirk­samen Lufteintrittsöffnung (10a) des einen Luft­eintrittskanales (10) mittels zweier seitlicher, verstellbarer Schieber (13, 14) einstellbar ist.10. The device according to claim 9, characterized in that the size and spatial position of the effective air inlet opening (10 a) of the one air inlet duct (10) by means of two lateral, adjustable slide (13, 14) is adjustable. 11.Vorrichtung nach den Ansprüchen 9 und 10, dadurch gekennzeichnet, daß die Größe der wirksamen Luft­eintrittsöffnung (11a) dem anderen Lufteintrittska­nales (11) mittels eines über die ganze Breite dieses Lufteintrittskanales reichenden Schiebers (15) einstellbar ist.11.Device according to claims 9 and 10, characterized in that the size of the effective air inlet opening (11a) of the other air inlet duct (11) can be adjusted by means of a slide (15) extending over the entire width of this air inlet duct.
EP89120028A 1988-11-22 1989-10-27 Device for feeding material to a subassembly Expired - Lifetime EP0370267B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3839419 1988-11-22
DE3839419A DE3839419A1 (en) 1988-11-22 1988-11-22 DEVICE FOR FEEDING MATERIAL INTO A PLANT PART

Publications (3)

Publication Number Publication Date
EP0370267A2 true EP0370267A2 (en) 1990-05-30
EP0370267A3 EP0370267A3 (en) 1991-03-20
EP0370267B1 EP0370267B1 (en) 1993-06-23

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EP89120028A Expired - Lifetime EP0370267B1 (en) 1988-11-22 1989-10-27 Device for feeding material to a subassembly

Country Status (9)

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US (1) US4982905A (en)
EP (1) EP0370267B1 (en)
KR (1) KR930008282B1 (en)
BR (1) BR8905860A (en)
DE (2) DE3839419A1 (en)
DK (1) DK580089A (en)
ES (1) ES2042935T3 (en)
MX (1) MX172501B (en)
ZA (1) ZA898257B (en)

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EP0525423A1 (en) * 1991-07-23 1993-02-03 Krupp Polysius Ag Method and device for grinding materials of different sizes
WO2008046592A1 (en) * 2006-10-21 2008-04-24 Khd Humboldt Wedag Gmbh Classifier for classifying granular material
CN109261975A (en) * 2018-10-19 2019-01-25 赣州海创钨业有限公司 Blanking device is used in a kind of production of tungsten powder

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AU656334B2 (en) * 1990-10-30 1995-02-02 Fukutaro Kataoka Fluidized crusher/drier for use in a fluidized crusher/drier system
DE4116683A1 (en) * 1991-05-22 1992-11-26 Nied Roland Wind sifter for separate removal of coarse and fine materials - has preliminary jet pipe and high-speed gas jet for initial dispersal of material
US5819947A (en) * 1996-01-29 1998-10-13 Sure Alloy Steel Corporation Classifier cage for rotating mill pulverizers
DE19651103A1 (en) * 1996-12-09 1998-06-10 Krupp Polysius Ag Roll milling process for pulverising relatively hard brittle material e.g. clinker cement
US6446888B1 (en) * 2000-11-08 2002-09-10 Robert M. Williams, Sr. Grinding apparatus with vertical static separators
WO2009093346A1 (en) * 2008-01-24 2009-07-30 Mitsubishi Heavy Industries, Ltd. Roller mill structure
US7946516B1 (en) * 2009-12-31 2011-05-24 Flsmidth A/S Feed chute for vertical roller mill
DE102012107127B4 (en) 2012-08-03 2017-08-17 Thyssenkrupp Industrial Solutions Ag Vertical roller mill
US10016762B2 (en) * 2015-06-16 2018-07-10 Arvos Raymond Bartlett Snow Llc Vertical bowl mill for producing coarse ground particles
CN107243388B (en) * 2017-05-17 2019-04-16 柳州博海科技有限公司 A kind of flour mill for milk tea powder agglomates

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EP0525423A1 (en) * 1991-07-23 1993-02-03 Krupp Polysius Ag Method and device for grinding materials of different sizes
WO2008046592A1 (en) * 2006-10-21 2008-04-24 Khd Humboldt Wedag Gmbh Classifier for classifying granular material
CN109261975A (en) * 2018-10-19 2019-01-25 赣州海创钨业有限公司 Blanking device is used in a kind of production of tungsten powder

Also Published As

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BR8905860A (en) 1990-06-12
KR930008282B1 (en) 1993-08-27
KR900007479A (en) 1990-06-01
DE58904791D1 (en) 1993-07-29
DK580089A (en) 1990-05-23
DE3839419A1 (en) 1990-05-23
EP0370267B1 (en) 1993-06-23
EP0370267A3 (en) 1991-03-20
MX172501B (en) 1993-12-17
DK580089D0 (en) 1989-11-17
US4982905A (en) 1991-01-08
ES2042935T3 (en) 1993-12-16
ZA898257B (en) 1990-07-25

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