EP0374491B1 - Séparateur pneumatique - Google Patents

Séparateur pneumatique Download PDF

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Publication number
EP0374491B1
EP0374491B1 EP89121348A EP89121348A EP0374491B1 EP 0374491 B1 EP0374491 B1 EP 0374491B1 EP 89121348 A EP89121348 A EP 89121348A EP 89121348 A EP89121348 A EP 89121348A EP 0374491 B1 EP0374491 B1 EP 0374491B1
Authority
EP
European Patent Office
Prior art keywords
separator
rotor
distributor
grinding
material distributor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP89121348A
Other languages
German (de)
English (en)
Other versions
EP0374491A3 (fr
EP0374491A2 (fr
Inventor
Michael Dr.-Ing. Von Seebach
Norbert Dipl.-Ing. Patzelt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ThyssenKrupp Industrial Solutions AG
Original Assignee
Krupp Polysius AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Krupp Polysius AG filed Critical Krupp Polysius AG
Publication of EP0374491A2 publication Critical patent/EP0374491A2/fr
Publication of EP0374491A3 publication Critical patent/EP0374491A3/fr
Application granted granted Critical
Publication of EP0374491B1 publication Critical patent/EP0374491B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
    • B02C23/20—Adding fluid, other than for crushing or disintegrating by fluid energy after 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
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/14—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices
    • B02C13/18—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor
    • B02C13/1807—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate
    • B02C13/1835—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate by means of beater or impeller elements fixed in between an upper and lower rotor disc
    • B02C13/1842—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate by means of beater or impeller elements fixed in between an upper and lower rotor disc with dead bed protected beater or impeller elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C21/00—Disintegrating plant with or without drying of the material
    • B02C21/002—Disintegrating plant with or without drying of the material using a combination of a roller mill and a drum mill
    • B02C21/005—Disintegrating plant with or without drying of the material using a combination of a roller mill and a drum mill the roller mill having cooperating rollers
    • 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
    • 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
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/14—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices
    • B02C13/18—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor
    • B02C13/1807—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate
    • B02C2013/1885—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate of dead bed type

Definitions

  • the invention relates to a classifier according to the preamble of claim 1.
  • a classifier according to the preamble of claim 1 is known for example from EP-A-0 221 246.
  • the material distributor designed as a plate is located directly on the top of the rotor and can be rotated together with the rotor.
  • a crop distributor on the top of the classifier rotor is rotatably formed with it, this crop distributor is also provided with a plurality of vertically and radially aligned blades and around this crop distributor with radial Distance is provided a grooved housing liner ring with which the wings cooperate to break up and crush agglomerated masses of the powdered material supplied before it falls into the ring-shaped visual space below.
  • the coarse material which has been freed of fine particles, falls downward onto an annular disk by gravity and is discharged to the outside through an outer annular chamber due to the centrifugal action of this rotating disk.
  • FIG. 1 Another sifter design, which also does not fall under the preamble of claim 1, is described in connection with a comminution system in EP-A-0 237 641.
  • the viewing area is located in the vertical-axis classifier in a middle height area of the housing between a fixed guide device (blind ring) below. for sight air entry and an overhead rotating sight system.
  • a regrind feed plate with impact elements is arranged centrally in this viewing area, which is driven separately and, in addition to distributing the crop, is intended to have a dissolving grinding effect on regrind agglomerates.
  • the invention has for its object to design a classifier according to the preamble of claim 1 so that it can be used particularly advantageously in grinding plants equipped with a material bed roller mill, in which the discharged from the material bed roller mill, in particular in the form of flakes Grist often contains a high proportion of fine material and should therefore be optimally deagglomerated.
  • a crusher is already known from EP-A-276 849, in which a centrifugal rotor is arranged, which is surrounded at a radial distance by an annular chamber open towards the rotor.
  • this is a pure crusher for the relatively coarse comminution of stones without reference to a classifier or to grinding plants equipped with a material bed roller mill.
  • the crop distributor is driven independently of the rotor by means of a separate drive device, and on the other hand, this crop distributor is surrounded at a radial distance by an annular chamber which is open towards the crop distributor and which represents an impact and deagglomeration zone and in which there is wear protection training effective bulk goods.
  • the material to be sifted which is preferably the material to be discharged from a material bed roller mill, can be optimally dissolved and evened out by being thrown into the annular chamber.
  • the fact that the speed of the crop distributor can be selected independently of that of the rotor also contributes to this optimal deagglomeration of the slugs.
  • the crop distributor is designed in accordance with the invention in such a way that the dissolution of the crop and the uniform spreading into the viewing space are promoted.
  • the sifter 1 illustrated in FIGS. 1-3 contains a driven rotor 2 with a vertical axis, which has blades 3 arranged on its circumference at a distance from one another.
  • the rotor 2 is surrounded by a stationary diffuser 4, which contains adjustable guide vanes and via which a visible air flow supplied by means of an inlet spiral 5 enters the viewing space 6 between the diffuser 4 and the rotor 2.
  • the rotor 2 is driven from below by a drive motor (not shown) via a shaft 8 which is mounted above the rotor 2 in a bearing 10 carried by radial webs 9.
  • a coarse material hopper 11 for discharging the coarse material dropping out of the viewing space 6 is located below the rotor 2 and guide apparatus 4.
  • a channel 12 adjoins the open lower end face of the rotor 2, which is used to discharge the fine air laden with fine air.
  • a crop distributor 13 is arranged at a distance above the rotor 2 and is driven independently of the rotor 2 by a separate drive motor 14 via a belt drive 15 and a hollow shaft 16.
  • the hollow shaft 16 is supported in bearings 17, 18.
  • the crop distributor 13 contains a plate-shaped base plate 19 and an annular cover plate 20. Between the base plate 19 and the cover plate 20 there are a number (for example three) guide webs 21 which are inclined in relation to the radial position in the direction of rotation (arrow 22) of the crop distributor. Holding elements 23, 24 are provided in the region of the ends of the guide webs 21. Support plates 25 support the guide webs 21 from the outside.
  • annular crop inlet opening 26 Between the annular cover plate 20 of the crop distributor 13 and the shaft 16 there is an annular crop inlet opening 26, through which the crop fed, for example by means of a conveyor belt 27 and a feed chute 28, is fed to the crop distributor 13.
  • the crop distributor 13 is surrounded at a radial distance by an annular chamber 29 which is open towards the crop distributor 13 and which represents a baffle and deagglomeration zone for the crop thrown outwards by the crop distributor 13. Since the annular chamber 29 has a base 30, a bed of material 31 forms in this annular chamber 29, onto which the material thrown off by the material distributor 13 strikes and which thus serves as wear protection works.
  • a good cushion is formed on the guide webs 21 of the material distributor 13 - significantly favored by the accumulation effect exerted by the holding elements 23, 24 - onto which the material entering through the material inlet opening 26 into the material distributor 13 and flung outward in the radial direction Impact good particles. In this way, the wear on the surfaces coming into contact with the good agglomerates is significantly reduced.
  • the function of the classifier according to FIGS. 1-3 is summarized as follows:
  • the material to be sifted (preferably the material to be discharged from a material bed roller mill) is fed to the material distributor 13, thrown by it into the annular chamber 29 and optimally dissolved and homogenized in this impact and deagglomeration zone.
  • the material distributor 13 thrown by it into the annular chamber 29 and optimally dissolved and homogenized in this impact and deagglomeration zone.
  • the material to be sifted preferably the material to be discharged from a material bed roller mill
  • the speeds (and, if necessary, the direction of rotation) of rotor 2 and crop distributor 13 can be selected differently, so that both the deagglomeration and the sighting can be optimally adjusted to match the crop.
  • feed chutes 28 can be arranged.
  • screws can also be provided for feeding the ground material.
  • a feed hopper 33 contains a feed hopper 33, a material bed roller mill 34, a circulating bucket elevator 35, a classifier 1 (corresponding to FIGS. 1-3) which is also designed as a deagglomerator, a separator 36 and a circulating air fan 37.
  • the coarse material discharged via the coarse material hopper 11 of the classifier 1 is returned in the grinding system according to FIG. 4 via a return 38 to the inlet shaft 39 of the material bed roller mill 34.
  • the fine material separated from the classifying air stream in the separator 36 forms the finished product (line 40). 4 thus shows the diagram of a pure circular grinding with a material bed roller mill 34. Since the scraps discharged from the roller mill 34 take place in the material distributor of the classifier 1, a separate disagglomeration device is unnecessary; at the same time, the funding path is shortened.
  • a fine mill preferably designed as a tube mill 41, which contains the coarse material discharged via the coarse material hopper 11 of the classifier 1 is fed.
  • the common discharge of the tube mill 41 and the separator 36 forms the finished product (line 42).
  • returns 43, 44 indicated by dashed lines in FIG. 5, via which - alternatively or additionally - material discharged from the material bed roller mill 34 (return 43) and / or material discharged via the coarse material hopper 11 of the classifier 1 (return 44) can be returned to the inlet shaft 39 of the material bed roller mill 34.
  • FIG. 5 thus shows a grinding system with pre-grinding in the material bed roller mill 34 and fine grinding in the continuous tube mill 41, alternatively with semolina and / or slurry return to the material bed roller mill.
  • the disagglomeration of the slugs in sifter 1 results in a significant simplification of the system and a significant reduction in operating costs.
  • the grinding system illustrated in FIG. 6 contains the same elements as the system according to FIG. 5. As with the grinding system according to FIG. 4, all of the coarse material discharged via the coarse material hopper 11 of the classifier 1 is returned to the material bed roller mill 34, while that in the separator 36 separated material is still subjected to regrinding in tube mill 41.
  • a circulation bucket elevator 45 is provided, which returns the discharge of the tube mill 41 to the feed chute 28 of the classifier 1, so that it together with the discharge material Material bed roller mill 34 reaches the material distributor 13 of the classifier 1.
  • the finished product is withdrawn from separator 36 (line 46).
  • FIG. 8 finally shows a grinding plant which, in addition to the plant parts illustrated in FIG. 5, also contains a circulation bucket elevator 45, a further classifier 47 and a separator 48.
  • the sifter 47 is - in contrast to the sifter 1 - designed in the usual way, i. H. provided with a single drive motor through which the rotor and a suitably designed spreading disc are driven.
  • the ground material discharged from the tube mill 41 is fed to the sifter 47 via the circulating bucket elevator 45.
  • the coarse material separated in the sifter 47 is again fed (together with the discharge material from the separator 36) to the tube mill 41, while the fine material discharged from the sifter 47 forms the finished product after separation in the separator 48.
  • FIG. 9 shows a variant of the supply of goods to the distributor 13, which is particularly suitable for larger versions.
  • the supply of goods takes place here through the correspondingly large shaft 16, via which the crop distributor is driven by the drive motor 14.
  • the material thus reaches the material distributor 13 centrally and is thrown outwards by it in the manner already explained and is deagglomerated in the annular chamber 29.

Claims (11)

  1. Séparateur à vent, comprenant
    a) un rotor commandé (2), dont l'axe est vertical et qui comprend à sa circonférence des palettes (3) placées à distance les unes des autres,
    b) un distributeur rotatif de matière (13) disposé au-dessus du rotor (2),
    c) un dispositif de déversement de matière à séparer sur le distributeur (13),
    d) un appareil directeur fixe (4) entourant à distance le rotor (2) et équipé de pales directrices réglables, la matière projetée par le distributeur (13) parvenant dans une chambre de séparation (6) formée entre l'appareil directeur (4) et le rotor (2), cette chambre de séparation étant traversée par un courant d'air de séparation arrivant à travers l'appareil directeur et évacué à travers le rotor,
    e) un canal (12) d'évacuation du courant d'air de séparation, chargé de matière à granulométrie fine, qui est disposé dans le prolongement d'un côté extrême du rotor (2),
    f) une trémie (11) d'évacuation de la matière à gros grains qui est disposée sous le rotor (2) et sous l'appareil directeur (4),
    caractérisé par la combinaison des particularités suivantes :
    g) le distributeur de matière (13) est commandé indépendamment du rotor (2) au moyen d'un dispositif indépendant de commande et
    h) ce distributeur de matière (13) est entouré à distance radiale d'une chambre annulaire (29) ouverte sur le distributeur de matière, représentant une zone de percussion et de désagglomération et dans laquelle un tas de matière se formant en service sur son fond (30) agit en protection contre l'usure.
  2. Séparateur à vent selon la revendication 1, caractérisé en ce que distributeur de matière (13) comprend les éléments suivants :
    a) une plaque de fond en forme de plateau (19),
    b) plusieurs traverses de guidage (21) disposées sur la plaque de fond et décalées sur l'orientation radiale dans le sens de rotation du distributeur de matière,
    c) des éléments de retenue (23, 24) destinés à créer un coussin de matière sur les traverses de guidage (21).
  3. Séparateur à vent selon la revendication 2, caractérisé en ce que le distributeur de matière (13) comprend une plaque annulaire de couverture (20), un trou annulaire d'entrée de matière (26) étant prévu entre cette plaque de couverture (20) et l'arbre (16) de commande du distributeur de matière (13).
  4. Séparateur à vent selon la revendication 1, caractérisé en ce que le distributeur de matière (13) est entouré à distance radiale d'une chambre annulaire (29) ouverte sur le distributeur de matière, représentant une zone de percussion et de désagglomération et dans laquelle se forme un tas de matière (31) ayant une action protectrice contre l'usure.
  5. Séparateur à vent selon la revendication 1, caractérisé en ce que l'arbre de commande du distributeur de matière (13) est conformé en arbre creux (16).
  6. Installation de broyage, comprenant
    a) un broyeur à cylindres (34) d'un lit de matière, équipé de deux cylindres serrés l'un contre l'autre sous pression élevée,
    b) un séparateur à vent (1) de séparation de la matière fragmentée dans le broyeur à cylindres,
       caractérisée par un séparateur vent selon la revendication 1.
  7. Installation de broyage selon la revendication 6, caractérisée par un conduit (38) de recyclage de la matière à gros grains déchargée dans la trémie (11) du séparateur à vent (1) sur le broyeur à cylindres (34).
  8. Installation de broyage selon la revendication 6, caractérisée par les particularités suivantes :
    a) elle comprend un broyeur fin constitué de préférence d'un tube broyeur (41) et destiné à réceptionner la matière à gros grains déchargée par la trémie (11) du séparateur à vent (1),
    b) elle comprend par ailleurs des conduits de recyclage (43, 44) utilisables en variante ou accessoirement et par lesquels la matière déchargée du broyeur à cylindres (34) d'un lit de matière ainsi que par la trémie (11) de décharge de la matière à gros grains du séparateur à vent (1) peut être recyclée sur le broyeur à cylindres.
  9. Installation de broyage selon la revendication 8, caractérisée par un autre conduit de recyclage par lequel la matière déchargée du broyeur fin peut être renvoyée à nouveau dans le séparateur à vent (1).
  10. Installation de broyage selon la revendication 7, caractérisée par un broyeur fin constitué de préférence d'un tube broyeur (41) pour le broyage final de la matière déchargée du séparateur à vent (1) et représentant la matière à granulométrie fine.
  11. Installation de broyage selon la revendication 10, caractérisée par un autre conduit de recyclage par lequel la matière déchargée du broyeur fin (41) est dirigée sur un autre séparateur à vent (47) équipé d'une commande unique.
EP89121348A 1988-12-22 1989-11-17 Séparateur pneumatique Expired - Lifetime EP0374491B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3843338 1988-12-22
DE3843338A DE3843338A1 (de) 1988-12-22 1988-12-22 Sichter

Publications (3)

Publication Number Publication Date
EP0374491A2 EP0374491A2 (fr) 1990-06-27
EP0374491A3 EP0374491A3 (fr) 1991-12-11
EP0374491B1 true EP0374491B1 (fr) 1994-02-16

Family

ID=6369914

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89121348A Expired - Lifetime EP0374491B1 (fr) 1988-12-22 1989-11-17 Séparateur pneumatique

Country Status (4)

Country Link
US (1) US5024754A (fr)
EP (1) EP0374491B1 (fr)
DE (2) DE3843338A1 (fr)
ES (1) ES2050207T3 (fr)

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DE3644341A1 (de) * 1986-12-23 1988-07-07 Krupp Polysius Ag Verfahren und anlage zur zweistufigen zerkleinerung von sproedem mahlgut
FR2610217B1 (fr) * 1987-01-30 1991-08-16 Alsthom Concasseur rotatif a aubes de projection autoprotegees
DE3711926A1 (de) * 1987-04-08 1988-10-27 Kloeckner Humboldt Deutz Ag Einrichtung zur zerkleinerung und mahlung sproeden mahlgutes wie z. b. zementklinker, erz, kohle oder dergleichen
DE3822729A1 (de) * 1988-07-05 1990-01-11 Krupp Polysius Ag Anlage zur zerkleinerung von sproedem mahlgut
DE3823380C2 (de) * 1988-07-09 1994-09-08 Kloeckner Humboldt Deutz Ag Sichter zum Sichten von körnigem, insbesondere agglomeriertem Gut

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104853847A (zh) * 2012-10-10 2015-08-19 蒂森克虏伯工业解决方案股份公司 研磨机
CN104853847B (zh) * 2012-10-10 2017-09-08 蒂森克虏伯工业解决方案股份公司 研磨机

Also Published As

Publication number Publication date
US5024754A (en) 1991-06-18
EP0374491A3 (fr) 1991-12-11
DE3843338A1 (de) 1990-06-28
EP0374491A2 (fr) 1990-06-27
DE58906996D1 (de) 1994-03-24
ES2050207T3 (es) 1994-05-16

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