EP0734787A1 - Montage de l'arbre d'un séparateur pneumatique centrifuge - Google Patents

Montage de l'arbre d'un séparateur pneumatique centrifuge Download PDF

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Publication number
EP0734787A1
EP0734787A1 EP96102305A EP96102305A EP0734787A1 EP 0734787 A1 EP0734787 A1 EP 0734787A1 EP 96102305 A EP96102305 A EP 96102305A EP 96102305 A EP96102305 A EP 96102305A EP 0734787 A1 EP0734787 A1 EP 0734787A1
Authority
EP
European Patent Office
Prior art keywords
rotor
centrifugal classifier
rotor shaft
ring
outlet
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
EP96102305A
Other languages
German (de)
English (en)
Other versions
EP0734787B1 (fr
Inventor
Ulrich Barthelmess
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.)
Omya GmbH
Original Assignee
Omya 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 Omya GmbH filed Critical Omya GmbH
Publication of EP0734787A1 publication Critical patent/EP0734787A1/fr
Application granted granted Critical
Publication of EP0734787B1 publication Critical patent/EP0734787B1/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
    • B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
    • B07B11/06—Feeding or discharging arrangements
    • 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 a centrifugal classifier, the substantially cylindrical housing of which has a tangential viewing air inlet extending over the entire height of the classifying rotor, and whose rotor shaft extends outwards at both axial ends through a fine material viewing air outlet space, the diameter of which in is essentially the same as the diameter of the classifying rotor.
  • centrifugal force classifier is already known from DBP 2951819.
  • This classifier is characterized by a high throughput, with a high output of fine material and few coarse grain missing grain in the fine material.
  • the two fine material-visible air outlet spaces are each formed by a knee-shaped tube section, the diameter of which corresponds approximately to the rotor diameter.
  • the rotor shaft is domed on both sides by this Exhaust pipe pieces passed through, the shaft bushing must be sufficiently sealed from the outside atmosphere.
  • a bearing for the shaft is provided on each side of the shaft bushing.
  • a pulley or the like sits at the upper end of the shaft.
  • the rotor shaft and the classifier rotor as a whole have to be compact and relatively bulky in accordance with the large axial distance between the bearings in order to achieve the required strength and to avoid vibrations.
  • a centrifugal classifier is already known from DBP 2825400, the rotor blades of which are attached to a front ring at both ends and the two front rings are each mounted on their outer circumference in a hydrostatic, aerostatic or electromagnetic bearing.
  • bearings are quite expensive, especially given the large diameter of the end rings.
  • the invention has for its object to reduce the distance between the bearings of the rotor shaft from each other in a centrifugal classifier, but the bearings should be accessible from the outside for maintenance, measurement and repair; an optimum should be achieved between the requirement for unobstructed fine material sight air outlet and a small distance between the bearings and good accessibility of the bearings.
  • the inwardly extending approach or the arching for receiving the bearing takes up only a relatively small space, so that the remaining cross section is sufficient for the unobstructed fine material sight air outlet.
  • this outlet space which widens in the direction of flow in the form of a screw, reaches its largest flow cross-section, ie after 360 degrees or a full turn with respect to the origin of the helical or helical configuration, there is a preferably tangential outlet line.
  • the result is that the bearing accommodated axially on the inside in the extension or arch is easily accessible from the outside, at least on the relatively large circumferential area of the beginning or origin of the outlet worm or screw . There is also a low axial height.
  • the distance between the bearings of the rotor shaft from one another can be further reduced by the fact that the radial arms connecting the end rings of the rotor to the rotor shaft are inclined toward one another.
  • the classifier rotor can be arranged horizontally or vertically.
  • the grain mixture to be sifted is easiest to be introduced into the classifier housing together with the classifying air, the grain class is therefore already relatively fine-grained, so that the coarser grains are also carried by the classifying air flow.
  • a large, funnel-shaped outlet space is provided beneath the classifier rotor, in which the flow velocity decreases sharply, so that the coarse particles fall down into the outlet funnel.
  • a vertical arrangement of the classifier rotor should be more appropriate.
  • the mixture to be sifted can be entered from above into the visible space surrounding the rotor.
  • funnel-shaped coarse material outlets can also open into the viewing space, each of which extends over part of the circumference.
  • Your floor surfaces can be coated with a hard, wear-resistant and at the same time smooth coating, e.g. B. a ceramic glaze. The smoother the surface, the lower its inclination, which saves on axial height.
  • the classifier has a vertically arranged, essentially cylindrical housing 1, in which a classifier rotor 2 can be rotated.
  • the classifier housing has a tangential air inlet 3 extending over the entire height.
  • a guide vane ring 5 is provided at a radial distance from the housing jacket 4. Again, at a radial distance from the guide vane ring, the lamellar ring or blade ring 6 of the classifying rotor is provided.
  • the quantity of grain to be separated is entered from above into the cylindrical ring-shaped viewing space 7 which extends between the guide vane ring and the rotor blade ring.
  • an annular channel 8 is provided above the viewing area for blowing in the grain mixture, into which a connecting piece 9 opens.
  • the classifying blades 6 are held between an upper and a lower end ring 10, 11; Essentially radial arms 13 extend from the end rings to hubs 15 which are fixed on the shaft 14 of the rotor 2.
  • a middle retaining ring 10a is also provided, which is also fixed to the rotor shaft 14 with radial arms 13a and a hub 15a connected is.
  • a fine material classifying air outlet space 17, 18 is provided on each end of the classifying rotor 2.
  • the gap between a respective end ring 10, 11 of the classifying rotor 2 and the annular housing wall opposite it is sealed such that no coarse particles can get into the fine material space 17 from the classifying room 7.
  • an annular channel 16 with connection bores 16a distributed over the circumference is provided in each of the two outlet spaces 17, 18.
  • the upper and the lower fines outlet space 17, 18 each have a central, axially inwardly extending extension 19, 20, in each of which a bearing 21, 22 is inserted for the rotor shaft 14.
  • a bearing 21, 22 is inserted for the rotor shaft 14.
  • the radial arms 13 between the end rings 10, 11 and the rotor shaft 14 are inclined inwards towards one another, as a result of which the two radial bearings 21, 22 can be offset even further inwards, that is to say the rotor shaft becomes even shorter.
  • Each bearing 21, 22 is sealed from the interior by an annular gap seal 24, 25, which is supplied with purge air via axial and radial purge air channels 26 in the shaft.
  • an annular gap seal 24, 25 which is supplied with purge air via axial and radial purge air channels 26 in the shaft.
  • a conical ring 27 is provided on each end plate 10, 11, as a result of which the flow is guided favorably and an additional sealing gap is formed.
  • the two fines outlet spaces 17, 18 are helical or helical, each having a cylindrical outer ring wall 29, a cylindrical inner ring wall 30 and a helically axially outwardly inclined or rising, extending from the two ring walls 29, 30, circular in plan view End wall 31 formed.
  • the bearings 21, 22 for the rotor shaft are each accommodated in the inner ring wall 30 or the mentioned extension 19, 20. At the peripheral area where the outlet screw or outlet screw begins, the bearings are particularly easily accessible from the side.
  • the outer annular wall 29 is connected at the top, radially outward, to the annular mixture inlet channel 8. 2, the connecting piece 9 is inclined and aligned tangentially with respect to the ring channel 8.
  • the underside of the ring channel is provided with a spiral cutout 8a which widens in the direction of flow, so that the visible material is distributed uniformly over the circumference.
  • annular plate 33 or console is provided, on which the motor or the drive is mounted.
  • an axial bearing 34 is provided which carries the weight of the classifier rotor.
  • funnel-shaped coarse-grain outlets 35 are provided on the opposite, that is to say the lower housing end face, each of which extends over a quarter of the circumference and between which the lower bearing 22 is easily accessible from the side.
  • Each of the four coarse-grained outlets 35 thus consists of an inner and an outer curved vertical wall 35a, 35b and a radial wall 35c, 35d, which is inclined towards an outlet connection 35e.

Landscapes

  • Combined Means For Separation Of Solids (AREA)
  • Centrifugal Separators (AREA)
  • Cyclones (AREA)
  • Paper (AREA)
  • Sliding-Contact Bearings (AREA)
EP96102305A 1995-03-28 1996-02-16 Montage de l'arbre d'un séparateur pneumatique centrifuge Expired - Lifetime EP0734787B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19511314A DE19511314C2 (de) 1995-03-28 1995-03-28 Zentrifugalkraftsichter
DE19511314 1995-03-28

Publications (2)

Publication Number Publication Date
EP0734787A1 true EP0734787A1 (fr) 1996-10-02
EP0734787B1 EP0734787B1 (fr) 1999-06-16

Family

ID=7757942

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96102305A Expired - Lifetime EP0734787B1 (fr) 1995-03-28 1996-02-16 Montage de l'arbre d'un séparateur pneumatique centrifuge

Country Status (7)

Country Link
EP (1) EP0734787B1 (fr)
JP (1) JP2969555B2 (fr)
AT (1) ATE181260T1 (fr)
DE (2) DE19511314C2 (fr)
DK (1) DK0734787T3 (fr)
ES (1) ES2135803T3 (fr)
GR (1) GR3030557T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1086753A1 (fr) * 1999-09-23 2001-03-28 Bauermeister Verfahrenstechnik GmbH Séparateur pneumatique
CN104815794A (zh) * 2015-04-24 2015-08-05 冯愚斌 一种新型风送式轻柔薄片物料的杂质分离装置及方法
CN117339878A (zh) * 2023-12-04 2024-01-05 云南凯瑞特工程机械设备有限公司 一种带轻物质分离系统的移动筛分站

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19945646A1 (de) * 1999-09-23 2001-04-05 Krupp Polysius Ag Verfahren und Windsichter zum Klassieren von zerkleinertem Aufgabegut
CN112275354A (zh) * 2020-10-10 2021-01-29 李帅 一种大米加工方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1607631A1 (de) * 1967-07-27 1970-10-22 Krupp Gmbh Windsichter
DE2951819A1 (de) * 1979-12-21 1981-09-03 Omya GmbH, 5000 Köln Turbo-zentrifugalsichter
EP0250921A2 (fr) * 1986-07-03 1988-01-07 Krupp Polysius Ag Séparateur pneumatique
EP0286047A2 (fr) * 1987-04-10 1988-10-12 OMYA GmbH Séparateur pneumatique centrifuge
DE3741650C1 (en) * 1987-12-09 1988-12-01 Orenstein & Koppel Ag Apparatus for classifying dust-like bulk materials
EP0460490A2 (fr) * 1990-06-08 1991-12-11 Klöckner-Humboldt-Deutz Aktiengesellschaft Séparateur pneumatique

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1757582C2 (de) * 1968-05-20 1976-03-11 The Georgia Marble Co., Atlanta, .Ga. (V.St.A.) Schleuderkorb-Windsichter
DE2551175A1 (de) * 1975-11-14 1977-05-26 Erich Beck Spiralwindsichter
DE2825400C2 (de) * 1978-06-09 1984-02-02 Omya Gmbh, 5000 Koeln Trennmaschine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1607631A1 (de) * 1967-07-27 1970-10-22 Krupp Gmbh Windsichter
DE2951819A1 (de) * 1979-12-21 1981-09-03 Omya GmbH, 5000 Köln Turbo-zentrifugalsichter
EP0250921A2 (fr) * 1986-07-03 1988-01-07 Krupp Polysius Ag Séparateur pneumatique
EP0286047A2 (fr) * 1987-04-10 1988-10-12 OMYA GmbH Séparateur pneumatique centrifuge
DE3741650C1 (en) * 1987-12-09 1988-12-01 Orenstein & Koppel Ag Apparatus for classifying dust-like bulk materials
EP0460490A2 (fr) * 1990-06-08 1991-12-11 Klöckner-Humboldt-Deutz Aktiengesellschaft Séparateur pneumatique

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1086753A1 (fr) * 1999-09-23 2001-03-28 Bauermeister Verfahrenstechnik GmbH Séparateur pneumatique
CN104815794A (zh) * 2015-04-24 2015-08-05 冯愚斌 一种新型风送式轻柔薄片物料的杂质分离装置及方法
CN104815794B (zh) * 2015-04-24 2016-12-07 冯愚斌 一种螺旋风送式轻柔薄片物料的杂质分离装置及方法
CN117339878A (zh) * 2023-12-04 2024-01-05 云南凯瑞特工程机械设备有限公司 一种带轻物质分离系统的移动筛分站
CN117339878B (zh) * 2023-12-04 2024-01-30 云南凯瑞特工程机械设备有限公司 一种带轻物质分离系统的移动筛分站

Also Published As

Publication number Publication date
DE19511314A1 (de) 1996-10-02
JPH08281214A (ja) 1996-10-29
GR3030557T3 (en) 1999-10-29
ATE181260T1 (de) 1999-07-15
DK0734787T3 (da) 1999-12-06
DE59602216D1 (de) 1999-07-22
ES2135803T3 (es) 1999-11-01
DE19511314C2 (de) 1997-02-06
EP0734787B1 (fr) 1999-06-16
JP2969555B2 (ja) 1999-11-02

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