EP0392455B1 - Séparateur - Google Patents

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Publication number
EP0392455B1
EP0392455B1 EP90106840A EP90106840A EP0392455B1 EP 0392455 B1 EP0392455 B1 EP 0392455B1 EP 90106840 A EP90106840 A EP 90106840A EP 90106840 A EP90106840 A EP 90106840A EP 0392455 B1 EP0392455 B1 EP 0392455B1
Authority
EP
European Patent Office
Prior art keywords
cleaning machine
air
space
grate
proceeding
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
EP90106840A
Other languages
German (de)
English (en)
Other versions
EP0392455A1 (fr
Inventor
Johann Dipl.-Ing. Willbold
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.)
Happle & Co Maschinenfabrik GmbH
Original Assignee
Happle & Co Maschinenfabrik GmbH
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 Happle & Co Maschinenfabrik GmbH filed Critical Happle & Co Maschinenfabrik GmbH
Publication of EP0392455A1 publication Critical patent/EP0392455A1/fr
Application granted granted Critical
Publication of EP0392455B1 publication Critical patent/EP0392455B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
    • B07B7/01—Selective separation of solid materials carried by, or dispersed in, gas currents using gravity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C1/00—Apparatus in which the main direction of flow follows a flat spiral ; so-called flat cyclones or vortex chambers
    • 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
    • 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
    • B07B7/086—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force generated by the winding course of the gas stream
    • 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 cleaning machine for granular items to be cleaned, in particular a grain cleaning machine or the like, with at least one viewing space, into which an inlet shaft arranged above a grate through which an air stream flows and into which an expansion space adjoins and with at least one opening opens Airflow generating fan, which is arranged downstream of an associated air cleaning device connected to the expansion space.
  • the air cleaning device has at least one centrifugal separator which extends across the width of the associated grate and is arranged with a grate-parallel axis and which is provided with a suction pipe which has a circumferential deflecting grille and is provided with a suction duct which runs out of the expansion space Fan is connected, which is attached to the side wall of the separator housing and is connected through a supply duct running in the area of a machine side wall to a distribution box which is arranged in the area of the machine front side adjacent to the grate and which is open to the viewing space and to which the gaps in the grate face.
  • the centrifugal separator which is equipped with a deflection grille and immersion tube, not only ensures excellent separation quality with low energy consumption, but can also be easily integrated into the machine structure in an advantageous manner due to its horizontal arrangement so that a simple, compact design is achieved.
  • the horizontal suction pipe also advantageously enables the fan to be arranged on the side and, accordingly, the supply duct to be moved to the side, which results in an inexpensive, low-loss arrangement Flow guidance leads. This is exacerbated by the action on the visible space by means of a distribution chamber arranged on the end face and by inclination of the grate.
  • the plane of the grate can be inclined at an angle of 45 ° to the horizontal. This measure results in particularly favorable flow conditions.
  • a further advantageous measure can consist in the fact that the front-side distribution box has a clear cross section that continuously decreases over its width and is provided with guide vanes arranged in its interior.
  • a further advantageous embodiment can consist in that a preferably pivotable slide connects to the input shaft. This makes it possible to regulate the path of the feed material and thus to carry out a classification.
  • the upper region of the wall opposite the input shaft between the viewing space and the expansion space can advantageously also be designed as a slide that can be set up and put down.
  • a further, very particularly preferred measure can consist in that the suction pipe and / or the curved channel are divided by radial diaphragms into several sections arranged side by side.
  • This subdivision in the axial direction advantageously has the effect that the flow in the arc channel cannot or not significantly be deflected in the axial direction even if the fan is spaced from the separator housing which contains the arc channel and is penetrated by the suction pipe is set, which enables a compact, inexpensive structure.
  • the lack of axial flow deflection results in high centrifugal forces, which has an advantageous effect on the achievable separation quality.
  • the subdivision of the deflection grid according to the invention leads to resistance conditions which cause a comparatively uniform train over the entire length of the suction pipe and thus a comparatively uniform distribution of the mass flow over the entire length of the suction pipe, which also has a positive effect on the separation quality that can be achieved.
  • the resulting increase in the resistance of the deflection grid is largely compensated for and accordingly overall leads to comparatively low losses and thus to a comparatively low energy requirement.
  • the radially outer wall of the arch channel can be provided with a separation outlet which is continuous over the entire width and to which a suction chamber connects, which is followed by a post-cleaning device.
  • a peeling lip can advantageously be provided in the area of the deposition outlet. This ensures reliable removal of the contaminants.
  • Another expedient measure can consist in that the edge region of the deposition outlet opposite the peeling lip is designed as a baffle bar projecting approximately perpendicularly to the peeling lip into the chamber. This measure prevents solids, which impinge on the chamber wall opposite the deposition outlet, from rebounding into the arch channel.
  • Fig. 1 which can be used, for example, to clean grain before storage, is based in a manner known per se on the wind sifting principle, ie. H.
  • a feed stream 1 is penetrated by an air stream 2, the feed stream being divided into two fractions 3, 4, as indicated by arrows in FIG. 1.
  • the fraction 3 containing the heavier parts in the form of usable grain etc. falls through downward and can then be further processed, e.g. B. sieved, classified, etc.
  • the fraction 4 containing the lighter parts in the form of the impurities, the unusable grains etc. is entrained by the air flow.
  • the ventus shown has, as can also be seen in FIG. 1, a feed shaft 6 which is arranged above a grate 5 and to which the material to be cleaned is applied.
  • the grate 5 is formed by spaced apart, aerodynamically profiled slats which extend over the entire machine width, or here over one machine half of the machine, which is constructed in mirror image with respect to a central longitudinal plane.
  • the exit of the feed chute 6 is adjustable by means of a pivotable flap 7.
  • a feed roller 8 is arranged in the area of the exit of the feed chute.
  • the feed chute 6 is followed by a slide 9, also formed by a pivotable flap, through which the feed stream 1 is passed over the grate 5.
  • the grate plane is strongly inclined to the horizontal, here at an angle of about 45 °, so that the air flow 2 between the lamellas resulting rust gaps 10 can flow with strong horizontal component.
  • the feed chute 6 opens into a viewing space 12 containing the grate 5, here delimited at the top by a flow guide plate 11, in which the first and second fractions 3, 4 are separated.
  • the bottom of the viewing space 12 is funnel-shaped, i. H. with V-shaped inclined flanks 13 and has a downwardly open window 14 through which the first fraction 3 is discharged downwards.
  • the second fraction 4 is discharged via a window 15 diagonally opposite the grate 5 and provided in the region of the wall of the viewing space 12 opposite the feed shaft 6. This is limited by a slide 16 which can be pushed on and pushed off in the region of the assigned wall and on the position of which the respective size of the fractions 3, 4 depends.
  • the viewing space 12 is adjoined by an expansion space 17 accessible via the window 15, the funnel-shaped base of which is provided with a discharge lock 18.
  • the second fraction 4 is separated into two partial streams 4a, 4b, as is further indicated in FIG. 1 by arrows.
  • the first partial stream 4a is formed by the heavier particles in the form of light grain or broken grains or the like.
  • the partial stream 4a is discharged via the discharge lock 18.
  • the second part stream 4b is formed by the light parts in the form of chaff, stalks and the like. These are entrained by the air, which exits through a window 19 opposite the window 15 sionsraum 17 exits.
  • the inlet connection 20 is connected by a centrifugal separator 21, which has a horizontal axis and extends over the same width as the grate 5 and accordingly as the viewing space 12 and the expansion space 17 from which the impurities remaining in the air stream are separated.
  • a fan 24, which can be driven by a motor 23 and which moves the air flow passing through the valve, is laterally attached to the housing 22 of the centrifugal force separator 21. The air sucked in by the fan 24 and cleaned in the centrifugal separator 21 is returned to the assigned grate 5.
  • a supply shaft 25 which runs in the area of the ventilator side wall on the ventilator side, flows to the pressure connection of the ventilator and leads to a distribution box 26 which is arranged in the area of the ventilator end side and extends over the same width as the assigned grate 5. In order to achieve the most uniform possible air distribution over the entire grate width, this has a cross section that decreases across the machine width.
  • additional baffles 27 are provided in the area of the distributor box 26 in order to achieve a particularly uniform air distribution, as can further be seen in FIG.
  • the supply shaft 25 is provided with a shut-off blind 28 which throttles of the circulating air flow.
  • the centrifugal separator 21 contains a suction pipe 29 which is directly attached to the suction nozzle of the fan 24, which is designed as a radial fan, and which is also arranged with a horizontal axis and which is inserted into an approximately circular cross-section of the working space of the housing 22, the diameter of which is larger than the suction pipe diameter is, so that there is an arc duct 30 which encompasses this and into which the inlet connection 20 adjoining the window 19 enters, as can best be seen from FIG.
  • the suction pipe 29 acting as an immersion pipe is designed as a grid pipe, which is provided on its entire circumference with axially parallel fins 31 which form a deflection grid and are circumferentially spaced from one another to form throughflow slots 32.
  • the air flowing through the curved channel 30 on a curved path is, as indicated by the arrows 33 in FIG.
  • the suction pipe 29 is designed as an insertion part that can be inserted into the associated work space.
  • the walls of the housing 22 extending perpendicular to the axis are provided with corresponding recesses 35.
  • the suction tube 29, which is designed as an insertion part, is provided with flanges 36 in the region of its ends and can thus be flanged to the housing end walls.
  • the suction pipe 29 on which the exemplary embodiment shown is based consists of impellers of radial fans flanged to one another with vanes curved backwards.
  • the curved channel 30, as can best be seen in FIGS. 2 and 4, is formed by intermediate walls 39 arranged between its end walls also divided into several sections 30a.
  • the sections 30a of the curved channel are wider than the sections 38 of the suction pipe 29 surrounded by it, which can contribute to increasing the desired uniformity.
  • the intermediate walls 39 have rounded leading edges 40, on which stalk pieces etc. are not kinked, but rather can slide over the stalk pieces etc.
  • the intermediate walls 39 extend, as can best be seen from FIG.
  • a peeling lip 43 is provided in the area of the separating outlet 42 and protrudes into the cross section of the curved channel 30, which peels off the radially outer flow layer loaded with the contaminants and introduces it via the separating outlet 42 into an adjoining, laterally extractable chamber 44.
  • the chamber 44 which is also arranged with a horizontal axis and here has an approximately elliptical cross section, extends over the entire width of the centrifugal separator 21.
  • the separation outlet 42 is located in the region of the narrow region of the end region of the arch channel 30, here in the region of the last quadrant of the arch channel 30th
  • the peeling lip 43 is provided with a rounded inflow flank for the same reason as the intermediate walls 29, as is further indicated in FIG. 3.
  • the peeling lip 43 which is arranged in a stationary manner in the embodiment on which FIG. 3 is based, covers approximately the outer third of the clear cross-section of the arched channel 30.
  • Such an embodiment is indicated in Figure 1.
  • the boundary of the deposition outlet 42 opposite the peeling lip 43 runs with its end region approximately perpendicular to the peeling lip 43 to the outside, i. H. into the chamber 44 and accordingly forms a baffle bar 45 which prevents solid particles impinging on the wall of the chamber 44 opposite the deposition outlet 42 from rebounding into the arched channel 30.
  • the suction connection 46 leads below the pressure connection of the fan 24, which is designed as a radial fan and arranged parallel to the suction connection, with its axis, which enables a high degree of structural freedom.
  • the post-cleaning device 47 consists of a fan part 48, which is preceded by a filter part 49 and a separating part 50, for example in the form of a cyclone separator, and which has a blow-out nozzle 51 opening into the surroundings is provided.
  • the air blown out into the environment, from which the solids were previously separated or filtered out, is clean and therefore completely harmless to the environment.
  • the resulting loss of circulating air as a result of the release of air into the environment is compensated for by the fact that fresh air can also be sucked in in the area of the grate 5 in addition to the circulating air, as indicated in FIG. 1 by the flow arrow 2a.
  • This fresh air drawn in from below mixes with the circulating air, which keeps its load of fine dust low.
  • FIG. 5 This design is based on a slotted tube 52 forming the chamber 44, the jacket flanks of which in the area of the slit are bent to form the separation outlet 42 and a peeling lip and baffle strip adjacent thereto in the radial direction.
  • the tube 52 can be arranged stationary, peeling ratios similar to those in the embodiment according to FIG. 3 being achievable.
  • the tube 52 it would also be conceivable to arrange the tube 52 so that it can rotate about its axis, as a result of which the jacket flanks delimiting the deposition outlet 42 can be moved back and forth to change the peeling conditions, as is indicated in FIG. 5 by dashed lines. It would of course also be conceivable, in addition, a pivotable peeling lip to provide. In any case, the end regions of the circumferential wall of the chamber 44 which are spaced apart from one another to form the deposition outlet 42 run into the circumferential wall 41 of the curved channel 30 which is interrupted to form the deposition outlet 42.
  • FIGS. 1 and 2 can extend over the entire width of the associated cleaning machine.
  • two valves are provided which are arranged in a mirror-image arrangement and each cover one machine half.
  • Each of these two venti is self-sufficient, i.e. H. provided with its own fan 24 and its own post-cleaning device 47.

Landscapes

  • Cyclones (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Confectionery (AREA)
  • Centrifugal Separators (AREA)

Claims (10)

  1. Machine de nettoyage pour un produit granulaire à nettoyer, notamment machine de nettoyage de céréales, etc., présentant au moins une chambre (12) de triage pneumatique dans laquelle débouche une trémie d'introduction (6) disposée au-dessus d'une grille (5) traversée par un courant d'air (2), chambre à laquelle se raccorde une chambre d'expansion (17) ; ainsi qu'au moins un ventilateur (24) engendrant le courant d'air, et en aval duquel est implanté un dispositif associé d'épuration d'air, raccordé à la chambre d'expansion (17), caractérisée par le fait que le dispositif d'épuration d'air comporte au moins un séparateur centrifuge (21) s'étendant sur la largeur de la grille associée (5), agencé de façon que son axe soit parallèle à cette grille, et doté d'un tube d'aspiration (29) qui est entouré par un canal curviligne (30) sortant de la chambre d'expansion (17), est pourvu d'un grillage périphérique de renvoi (31, 32), et est raccordé au ventilateur (24), lequel est rapporté sur la paroi latérale du carter (22) du séparateur et est relié, par l'intermédiaire d'un canal d'alimentation (25) s'étendant dans la région de la paroi latérale adjacente de la machine, à un caisson répartiteur (26) qui est disposé dans la région de la face extrême de la machine, voisine de la grille (5), est ouvert en direction de la chambre (12) de triage pneumatique, et vers lequel les interstices de la grille (5) sont tournés.
  2. Machine de nettoyage selon la revendication 1, caractérisée par le fait que des pales déflectrices (27) sont prévues dans la région du caisson répartiteur (26) muni, de préférence, d'une section transversale intérieure qui décroît en permanence sur sa largeur.
  3. Machine de nettoyage selon l'une des revendications précédentes, caractérisée par le fait que le canal d'alimentation (25) est doté d'un dispositif d'obturation (28).
  4. Machine de nettoyage selon l'une des revendications précédentes, caractérisée par le fait qu'une goulotte (9), de préférence pivotante, se rattache à la trémie d'introduction (6) ; et par le fait que le plan de la grille (5) est incliné, par rapport à l'horizontale, d'un angle mesurant de préférence environ 45°.
  5. Machine de nettoyage selon l'une des revendications précédentes, caractérisée par le fait que la région supérieure de la paroi opposée à la trémie d'introduction (6), entre la chambre (12) de triage pneumatique et la chambre d'expansion (17) préférentiellement munie d'un sas de décharge (18), est réalisée sous la forme d'une coulisse (16) pouvant monter et descendre ; et par le fait que la région inférieure de la paroi, entre la chambre (12) de triage pneumatique et la chambre d'expansion (17), est réalisée en tant que flanc infundibuliforme (13).
  6. Machine de nettoyage selon l'une des revendications précédentes, caractérisée par le fait que le canal curviligne (30) se raccorde, par un raccord d'afflux (20) pénétrant à peu près tangentiellement, à une fenêtre associée (19) de la chambre d'expansion (17).
  7. Machine de nettoyage selon l'une des revendications précédentes, caractérisée par le fait que le carter (22) du séparateur centrifuge (21) présente, de préférence, une chambre de travail à section transversale sensiblement circulaire, qui est délimitée par une paroi périphérique (41) radialement extérieure et dans laquelle est logé, excentriquement, le tube d'aspiration (29) dont le grillage périphérique de renvoi s'étend, de préférence, sur tout le pourtour et est scindé par l'intermédiaire de diaphragmes radiaux (37, respectivement 39), de préférence tout comme le canal curviligne (30), en plusieurs segments (38, respectivement 30a) agencés en juxtaposition.
  8. Machine de nettoyage selon l'une des revendications précédentes, caractérisée par le fait que la paroi (41) radialement extérieure du canal curviligne (30) est pourvue d'une sortie de séparation (42) ininterrompue sur toute la largeur, et à laquelle se raccorde une chambre (44) purgeable par aspiration et en aval de laquelle est implanté un dispositif de post-nettoyage (47), machine dans laquelle une lèvre de dissociation (43) préférentiellement réglable est prévue dans la région de la sortie de séparation (42), et la région marginale de la sortie de séparation (42), opposée à la lèvre de dissociation (43), est réalisée sous la forme d'une chicane (45) s'engageant, dans la chambre (44), à peu près perpendiculairement à la lèvre de dissociation (43).
  9. Machine de nettoyage selon la revendication 8 caractérisée par le fait que la chambre (44) peut être purgée par aspiration grâce à un raccord (46) qui bifurque latéralement et passe, d'un trait, au-dessous du-raccord de pression du ventilateur (24) rapporté latéralement.
  10. Machine de nettoyage selon l'une des revendications précédentes 8 ou 9, caractérisée par le fait que le dispositif de post-nettoyage (47) comporte un ventilateur (48) qui évacue dans l'atmosphère, et en amont duquel est/sont implanté(s) un filtre (49) et/ou un dispositif de séparation (50).
EP90106840A 1989-04-13 1990-04-10 Séparateur Expired - Lifetime EP0392455B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3912077A DE3912077C2 (de) 1989-04-13 1989-04-13 Reinigungsmaschine fuer koerniges reinigungsgut
DE3912077 1989-04-13

Publications (2)

Publication Number Publication Date
EP0392455A1 EP0392455A1 (fr) 1990-10-17
EP0392455B1 true EP0392455B1 (fr) 1992-12-09

Family

ID=6378557

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90106840A Expired - Lifetime EP0392455B1 (fr) 1989-04-13 1990-04-10 Séparateur

Country Status (5)

Country Link
EP (1) EP0392455B1 (fr)
AT (1) ATE83178T1 (fr)
DD (1) DD293514A5 (fr)
DE (2) DE3912077C2 (fr)
DK (1) DK0392455T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101272871B (zh) * 2005-09-23 2013-03-06 坡利西斯股份公司 用于筛选装料的装置

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4405642C2 (de) * 1994-02-22 1996-11-07 Eirich Adolf & Albrecht Kg Fliehkraftabscheider
DE10126645A1 (de) * 2001-05-25 2002-12-05 Brockhausen & Holze Bhg Guss U Wirbelkaskade zum Dispergieren und Windsichten
CN101507960B (zh) * 2009-03-25 2012-03-07 刘刚 葵花籽精选机
CN103506316A (zh) * 2013-10-23 2014-01-15 广西壮族自治区梧州茶厂 风选机
CN105107741B (zh) * 2015-09-17 2019-04-16 云南滇红集团股份有限公司 茶叶风选机
CN106216248A (zh) * 2016-08-03 2016-12-14 安徽笑堂茶业有限公司 一种智能茶叶风选机
EP4076775A1 (fr) 2019-12-20 2022-10-26 IFE Aufbereitungstechnik Gmbh Dispositif et procédé pour trier un mélange de matières
DE102019008916A1 (de) * 2019-12-20 2021-06-24 Ife Aufbereitungstechnik Gmbh Vorrichtung und Verfahren zur Sichtung eines Materialien-Gemisches

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Publication number Priority date Publication date Assignee Title
DE2650617C2 (de) * 1976-11-04 1982-04-15 Happle Gmbh & Co Maschinenfabrik, 7912 Weissenhorn Verfahren und Vorrichtung zum Reinigen und Sortieren von Getreide, Sämereien oder dergleichen Nutzgut
US4394256A (en) * 1981-02-09 1983-07-19 Goff James R Apparatus for separating abrasive blasting media from debris
JPS59145079A (ja) * 1983-02-08 1984-08-20 日鉄鉱業株式会社 粉体粒子の風力分級装置
DE3321326A1 (de) * 1983-06-13 1983-10-20 Paul 8100 Garmisch-Partenkirchen Freisl Verfahren und vorrichtung zum reinigen und sortieren von schuettguetern aller art
GB2157594B (en) * 1984-04-24 1987-10-28 Michael Sexton Classification of particulate material carried by an air current
FI78241C (fi) * 1985-05-03 1989-07-10 Larox Ag Pneumatiskt klassificeringsfoerfarande och -anordning.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101272871B (zh) * 2005-09-23 2013-03-06 坡利西斯股份公司 用于筛选装料的装置

Also Published As

Publication number Publication date
DE3912077C2 (de) 1993-11-04
DE3912077A1 (de) 1990-10-25
ATE83178T1 (de) 1992-12-15
EP0392455A1 (fr) 1990-10-17
DK0392455T3 (da) 1993-03-29
DD293514A5 (de) 1991-09-05
DE59000568D1 (de) 1993-01-21

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