EP0369399B1 - Séparateur pneumatique - Google Patents

Séparateur pneumatique Download PDF

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Publication number
EP0369399B1
EP0369399B1 EP89121065A EP89121065A EP0369399B1 EP 0369399 B1 EP0369399 B1 EP 0369399B1 EP 89121065 A EP89121065 A EP 89121065A EP 89121065 A EP89121065 A EP 89121065A EP 0369399 B1 EP0369399 B1 EP 0369399B1
Authority
EP
European Patent Office
Prior art keywords
cover
cover disc
disc
wheel
air
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
EP89121065A
Other languages
German (de)
English (en)
Other versions
EP0369399A3 (fr
EP0369399A2 (fr
Inventor
Roland Dr.-Ing. Nied
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Priority claimed from DE3838871A external-priority patent/DE3838871C2/de
Application filed by Individual filed Critical Individual
Publication of EP0369399A2 publication Critical patent/EP0369399A2/fr
Publication of EP0369399A3 publication Critical patent/EP0369399A3/fr
Application granted granted Critical
Publication of EP0369399B1 publication Critical patent/EP0369399B1/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
    • B07B7/08—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

Definitions

  • the invention relates to an air classifier, in which the classifying device consists of a rotating classifying wheel which flows against the centrifugal force and which is provided with blades on the outer circumference. Sight air and fine material leave the classifying wheel through an outlet nozzle, the coarse material is rejected by the rotating blade ring and gets out of the classifying room via a suitable discharge device.
  • Proven air classifiers of this type are described, for example, in DE-C 17 57 582 or DE-C 33 03 078. Such a vane wheel describes, for example, DE-C 35 08 889.
  • classifiers are sometimes equipped with an outlet nozzle extended to the dip tube for the fine material and the classifying air.
  • the outlet nozzle projects as a fixed installation part into the classifying wheel by a certain amount (see DE-C 33 03 078, Fig. 1, item 12).
  • a wind sifter with a classifier wheel consisting of two cover plates and a blade ring held between the cover plates is also known from FR-A-156 57 29, and in this classifier a coaxial outlet pipe is connected in a rotationally fixed manner to the downstream cover plate of the classifier wheel.
  • the outlet pipe is brought to the outflow-side cover plate with a constant inner diameter and continues in an opening in the outlet-side cover plate, the length of which corresponds exactly to the thickness of the cover plate and the cross-section of which is enclosed by the vane ring and delimited by the cover plates from the actual outlet pipe tapered like a truncated cone.
  • the object of the invention is therefore to design the classifying wheel in such a way that losses due to relative movements between moving parts and stationary components are significantly reduced.
  • the object of the invention is to enable a compact classifier design.
  • the pressure loss of the wind classifier designed according to the invention is significantly reduced compared to a wind classifier with a fixed outlet connection.
  • the classifier wheel has an upper, first, downstream cover plate 1 and an axially offset lower, second cover plate 2. Between the two cover plates 1, 2 there are blades 3 at regular intervals in the circumferential direction.
  • Such classifier wheels are known per se, so that further Comments on the formation of the blades 3 do not have to be made. In an embodiment closer to the previous versions, they are firmly arranged on the outer circumference of the upper and lower cover disks 1, 2 by holding the two cover disks together by bolts and holding the blades between them. Cover disks and blades form the classifying wheel rotating about its longitudinal axis 4.
  • the outlet nozzle 5 is firmly connected to the upper cover plate 1. It is as a dip tube with section 6 inside of the classifying wheel 1 to 3, in order to be connected within the classifying wheel to the upper cover plate 1 in a rotationally fixed manner. In an upper section 7, the outlet nozzle above the upper cover plate 1 is widened in a funnel shape; Arrows and outflows of the visual air enriched with fine dust are indicated by arrows 8.9. The rotary movement is initiated in the classifying wheel via the lower cover plate 2. In the area of the flow 8.9, the relative speed between the flow and the outlet connection 5 is greatly reduced compared to conventional solutions.
  • the classifying wheel and its upper cover disk 1, assigned to the outlet connection 5 in a rotationally fixed manner, are arranged in the air classifier according to the invention according to FIG. 2 in a housing which consists of a pot-shaped lower part 10 and an upper cover 11.
  • the two housing parts 10, 11 lie one on top of the other in peripheral flanges 12, 13 and are detachably connected to one another by screw connections 14 inserted through these peripheral flanges.
  • the lower housing part 10 has a lateral bracket 15, in which the cover 11 is pivotally mounted about its longitudinal axis by means of a pin 16. To pivot the cover 11 about the longitudinal axis of the pin 16, the screw connections 14 inserted through the flanges 12, 13 are loosened.
  • the cover 11 is provided with a neck-shaped extension 17, in which an upper, cylindrical tubular outlet tube 18 is rotatably mounted about its longitudinal axis in two axially offset bearings 19, 20; the outlet pipe 5 continues in the outlet pipe 18.
  • the outlet pipe 18 is connected to a vacuum source, not shown. Also at the upper end, the drive torque is introduced into the outlet pipe 18, for which purpose, as an example, outside of the upper end of the neck-shaped extension 17, which is releasably closed by a cover, a non-rotatable one pulley 21 connected to the drive connector and a drive belt 22 acting thereon are shown.
  • the second, lower cover plate 2 is fastened by means of a pin 23 to a bearing pin 24 which is mounted in bearings 25, 26 in a likewise neck-shaped extension 27 of the lower housing part 10 so as to be rotatable about its longitudinal axis.
  • this second, lower cover disk 2 can be designed as a horizontally arranged beater disk by arranging, on its outer periphery outside the blades 3, suitably designed beating tools 28, opposite which a grinding track 29 is arranged in the lower housing part 10.
  • the lower cover disk 2 is driven separately, which is why the drive torque is introduced into the bearing bolt 24 outside the shoulder 27, for which purpose, again as an example, a pulley 30 is non-rotatably placed on the outer end of the bearing bolt 24 outside the shoulder end closed by a releasable cover, on which a drive belt 31 acts.
  • the belt drives 21, 22 on the one hand and 30, 31 on the other hand are matched to one another such that the upper and lower cover disks 2, 3 are driven uniformly, but above all in a desired different speed ratio, and desired speed differences can occur and corresponding relative movements between the lower ends of the Buckets 3 and the lower cover plate 2 occur. Therefore, in this classifying wheel there is a fixed connection between the upper cover plate 1 and blades 3, but no contact is provided between blades 3 and lower cover plate 2.
  • a guide tube 32 is arranged and held with support blades 33 in the lower housing part 10 in such a way that it surrounds the blade rim 3 concentrically.
  • an inlet connection 34 opens radially into the lower housing part 10 directly above the housing base for introducing the classifying air.
  • an inlet connection 35 for the material opens radially into the lower housing part 10 and is conveyed into the housing by means of an inlet screw 36 arranged in the inlet connection 35.
  • the classifying air enters through the connecting piece 34, the material through the connecting piece 35 into the lower housing part 10, whereupon the classifying air enriched with good through the annular channel 37 between the guide tube 32 and the wall of the lower part 10 through a manifold 38 is supplied in the housing cover 11, in which a flow reversal takes place.
  • the well-enriched classifying air now reaches the area inside the guide tube 32 in order to be sucked in from there in the radial direction into the classifying wheel, where the coarse-grained material is separated off on the blades 3, so that classifying material laden with fine material enters the classifying wheel.
  • This fine air laden sight air is deflected in the sight wheel in an axial flow direction and is now sucked out through the outlet nozzle 5 and the outlet pipe 18.
  • the fine material is also filtered out of the air in a filter downstream of the dip tube section 18.
  • the material which is too coarse reaches the area of the impact tools 28 and the grinding track 29 along the cover disc 2 which is designed as an impact disc, in order to break up there into material of smaller grain size to be and to be fed to the classifier wheel again with the classifier air and fresh material in the manner described.
  • the interior of the housing 10, 11 is easily accessible and cleaning and maintenance, in particular of the classifying wheel part with the upper cover disc 1 and the blades 3 removed from the lower cover disc 2 and, if appropriate, its repair are readily possible.

Landscapes

  • Combined Means For Separation Of Solids (AREA)
  • Crushing And Pulverization Processes (AREA)

Claims (8)

  1. Séparateur pneumatique comprenant une roue séparatrice tournante qui reçoit de l'air de séparation chargé de particules fines et s'écoulant radialement de l'extérieur vers l'intérieur à l'encontre de la force centrifuge, de laquelle cet air de séparation sort axialement par un tube de sortie (18) et qui comporte un disque de recouvrement (1) côté écoulement, auquel le tube de sortie (18) est relié, un second disque de recouvrement (2) décalé axialement par rapport au premier et, entre les deux, des palettes (3) disposées sur la périphérie, caractérisé en ce que le tube de sortie (18) comporte, côté roue séparatrice, un manchon (5) au moyen duquel le tube de sortie (18) est lié en rotation avec le disque de recouvrement (1) côté écoulement de la roue séparatrice, qui se termine par une partie (6) dans la zone située entre les disques de recouvrement (1, 2) de la roue séparatrice et qui comporte une partie (7) dans laquelle la section transversale intérieure du manchon (5) s'élargit constamment pour atteindre la section transversale intérieure du tube de sortie (18).
  2. Séparateur pneumatique selon la revendication 1, caractérisé en ce que le second disque de recouvrement (2) est monté dans le carter (10, 11) avec possibilité de rotation dans la zone d'un tourillon d'appui cylindrique (24), et l'entraînement (30, 31) est appliqué à la roue séparatrice (1 à 3) par l'intermédiaire de ces deux disques de recouvrement.
  3. Séparateur pneumatique selon l'une des revendications 1 et 2, caractérisé en ce que le second disque de recouvrement (2) est équipé d'outils de percussion (28).
  4. Séparateur pneumatique selon la revendication 3, caractérisé en ce que chacun des deux disques de recouvrement (1, 2) possède son dispositif d'entraînement propre (21, 22 et, respectivement, 30, 31) et les deux disques de recouvrement peuvent être entraînés à des régimes différents, le disque de recouvrement (1) côté écoulement étant entraîné par l'intermédiaire du manchon de sortie (5, 6, 18) conçu sous la forme d'un arbre creux et le second disque de recouvrement (2) étant entraîné par l'intermédiaire d'un tourillon d'appui (24).
  5. Séparateur pneumatique selon la revendication 3 ou 4, caractérisé en ce que les palettes (3) sont fixées au disque de recouvrement (1) côté écoulement et se terminent devant le second disque de recouvrement (2) sans le toucher.
  6. Séparateur pneumatique selon la revendication 5, caractérisé en ce que la roue séparatrice (1 à 3) est disposée dans un carter en deux parties (10, 11), de façon que le disque de recouvrement (1) côté écoulement, muni des palettes (3) et du manchon de sortie (5, 6, 18), soit logé dans un couvercle de carter amovible (11), tandis que le second disque de recouvrement (2) conçu sous la forme d'un disque de percussion muni d'outils de percussion (28) est logé, avec possibilité de rotation, dans la partie en forme de tasse (10) du carter conçue pour recevoir la roue séparatrice lorsque celle-ci est en position de fonctionnement.
  7. Séparateur pneumatique selon la revendication 6, caractérisé en ce que le couvercle (11) est relié, de manière rabattable, à la partie en forme de tasse (10) du carter au niveau d'un palier (16) disposé sur le bord du carter ou du couvercle.
  8. Séparateur pneumatique selon l'une des revendications 4 à 7, caractérisé en ce que le disque de recouvrement (1) côté écoulement est monté avec possibilité de rotation au moyen du manchon de sortie (5, 6, 18) conçu sous la forme d'un arbre creux et le second disque de recouvrement (2) conçu sous la forme d'un disque de percussion muni d'outils de percussion (28) est monté avec possibilité de rotation au moyen d'un tourillon (24), chacun desdits disques étant disposé dans un embout de carter (17 et, respectivement, 27) en forme de col, le dispositif d'entraînement (21, 22 et, respectivement, 30, 31) agissant sur l'arbre creux et, respectivement, sur le tourillon à l'extérieur de l'embout de carter en forme de col.
EP89121065A 1988-11-17 1989-11-14 Séparateur pneumatique Expired - Lifetime EP0369399B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3838871 1988-11-17
DE3838871A DE3838871C2 (de) 1988-01-22 1988-11-17 Windsichter

Publications (3)

Publication Number Publication Date
EP0369399A2 EP0369399A2 (fr) 1990-05-23
EP0369399A3 EP0369399A3 (fr) 1991-06-12
EP0369399B1 true EP0369399B1 (fr) 1994-08-10

Family

ID=6367328

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89121065A Expired - Lifetime EP0369399B1 (fr) 1988-11-17 1989-11-14 Séparateur pneumatique

Country Status (3)

Country Link
EP (1) EP0369399B1 (fr)
AT (1) ATE109690T1 (fr)
ES (1) ES2057066T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1193000B2 (fr) † 2000-09-27 2009-11-11 Xerox Corporation Elément, dispositif, procédé et kit pour la séparation de particules

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5252110A (en) * 1990-08-01 1993-10-12 Roland Nied Preferably vertical air separator
US5899396A (en) * 1995-09-04 1999-05-04 Nied; Roland Air separator and single-rotor air separator mill with such an air separator
DE102018132155B3 (de) * 2018-12-13 2019-12-12 Netzsch-Feinmahltechnik Gmbh Fliehkraftsichter mit speziellem sichterrad
CN114917375B (zh) * 2022-06-14 2024-04-30 浙江湖州淳元智能科技有限公司 一种全面消杀病毒的净化消毒机

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3491879A (en) * 1967-04-18 1970-01-27 Donaldson Co Inc Centrifugal classifier
DE1757582C2 (de) * 1968-05-20 1976-03-11 The Georgia Marble Co., Atlanta, .Ga. (V.St.A.) Schleuderkorb-Windsichter
DE3303078C1 (de) * 1983-01-29 1984-05-30 Alpine Ag, 8900 Augsburg Windsichter fuer den Feinstbereich
DE3508889C1 (de) * 1985-03-13 1992-02-20 Alpine Ag, 8900 Augsburg Windsichter mit verschleissfreiem Sichtrad
DD248970A1 (de) * 1985-12-31 1987-08-26 Akad Wissenschaften Ddr Zentrifugalwindsichter
DE3838871C2 (de) * 1988-01-22 1994-10-27 Nied Roland Windsichter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1193000B2 (fr) † 2000-09-27 2009-11-11 Xerox Corporation Elément, dispositif, procédé et kit pour la séparation de particules

Also Published As

Publication number Publication date
ES2057066T3 (es) 1994-10-16
ATE109690T1 (de) 1994-08-15
EP0369399A3 (fr) 1991-06-12
EP0369399A2 (fr) 1990-05-23

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