EP1184090B1 - Roue de triage - Google Patents

Roue de triage Download PDF

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Publication number
EP1184090B1
EP1184090B1 EP00890260A EP00890260A EP1184090B1 EP 1184090 B1 EP1184090 B1 EP 1184090B1 EP 00890260 A EP00890260 A EP 00890260A EP 00890260 A EP00890260 A EP 00890260A EP 1184090 B1 EP1184090 B1 EP 1184090B1
Authority
EP
European Patent Office
Prior art keywords
blade wall
separating wheel
angle
tilted
wall
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
EP00890260A
Other languages
German (de)
English (en)
Other versions
EP1184090A1 (fr
Inventor
Josef Dipl.-Ing. Keuschnigg
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
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 Individual filed Critical Individual
Priority to ES00890260T priority Critical patent/ES2220385T3/es
Priority to DE50006828T priority patent/DE50006828D1/de
Priority to EP00890260A priority patent/EP1184090B1/fr
Priority to AT00890260T priority patent/ATE269174T1/de
Priority to US09/938,660 priority patent/US6644478B2/en
Publication of EP1184090A1 publication Critical patent/EP1184090A1/fr
Application granted granted Critical
Publication of EP1184090B1 publication Critical patent/EP1184090B1/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 a classifying wheel for an air classifier with collectradschaufeln, their radially outer blade ends in the direction of rotation the prepares for collecting data.
  • the invention is therefore based on the object, a generic To provide a classifying wheel in which by inclined backwards Shovel ends achieved the best possible visual behavior, the result imminent danger of deposits of bringgut on the rear Bucket wall of reformradschaufeln but avoided as much as possible becomes.
  • the two desired Achieved effects in an advantageous manner.
  • This will be Very strong inclinations of the blade ends possible, which stands for powder qualities with a largest grain less than 30 microns very beneficial impact.
  • the respective angle of the front and rear blade wall of the reformradschaufeln depends on several influencing factors, such as the speed of classifying wheel, type and composition of the visual good and the desired selectivity. As a rule, but a good visual behavior scored when the front scoop wall at an angle greater than about 45 ° and the aft blade wall at an angle is less than about 45 ° inclined.
  • the front blade wall at an angle between 50 ° and 80 °, preferably between 60 ° and 70 ° is inclined to the radial direction and if the rear blade wall at an angle between 30 ° and 45 °, preferably about 40 °, is inclined to the radial direction.
  • Fig. 1 shows a section of a preparerad invention 1, which as usual has a hub 2 and a paddle wheel rim 4, which are connected to each other via spokes 3.
  • a plurality of collectradschaufeln 5 is arranged, the radial outside lying blade ends 6 against those designated by arrow 7
  • Direction of rotation of the classifying wheel 1 are inclined backwards.
  • the blades 5 have - seen in the direction of rotation 7 - a front Blade wall 8 and a rear blade wall 9 on.
  • the front blade wall 8 In the area of radially outboard blade end 6 is the front blade wall 8 with respect to the radial direction 10 at an angle ⁇ of about 60 ° inclined, whereas the rear blade wall 9 at an angle ⁇ of is inclined at about 45 °.
  • the outer blade end 6 Furthermore, there is an end face 11, which in the illustrated Embodiment of the radial 10 inclined at an angle of 90 ° is, ie the outer radius of the classifying wheel in the area of reformradschaufeln 5 defined.
  • the front blade wall 8 of the sortradschaufeln 5 first a substantially flat area 12th on, the interior of the classifying wheel 1 out in a curved area 13 passes.
  • the rear blade wall 9 of the reformradschaufeln 5 is substantially away from the outer vane end 6 equipped with continuous curvature whose radius of curvature greater as the radius of curvature in the region 13 on the front blade wall eighth is. This results in a cross-sectional shape of the sortradschaufeln 5, from the outer blade end 6 to the central region towards and then decreases towards the inner end 14 again.
  • the front blade wall 8 is in the region of the inner end 14 of the blades 5 so inclined so that they are at an angle ⁇ to the radial in the direction of rotation. 7 is inclined.
  • the angle ⁇ is preferably between 10 ° and 40 °, more preferably between 20 ° and 30 °.
  • FIG. 2 is schematically another embodiment of the invention whereradschaufeln 5 shown, the front blade wall 8 in the region of the outer blade end 6 at an angle ⁇ of about 70 ° and the rear blade wall 9 an angle ⁇ of about 45 ° to the radial 10 are inclined.
  • the reformradschaufeln 5 of FIG. 2 also differ from the reformradschaufeln 5 of Fig. 1, that in Fig. 2, the rear blade wall 9 in Area of the outer blade end 6 a substantially flat Area 16 has.
  • the front blade wall 8 and the rear Blade wall 9 are adjacent to the flat areas 12 and 16 curved and can be approximately parallel in the region of the inner end 14 aligned to Radial 10.
  • the classifying wheel according to the invention can be fine and finest grains from a flow of particulate material through targeted guidance of a Gas flow in the area of entry of the flow between the reformradschaufeln (5) are separated into the reformrad.
  • With the Invention can with lowest possible speeds of the classifying wheel finest powder fractions are obtained. This will be essentially achieved in that the particle-laden gas flow of a higher Centrifugal force is exposed to through the channels between the reformradschaufeln (5) to get into the inner area of the classifying wheel, as this corresponds to the peripheral speed of the classifying wheel would. Due to the lower inclination of the rear blade wall (9) becomes at the same time the otherwise problematic deposition of bringgut on the rear blade wall (9) prevented.

Landscapes

  • Combined Means For Separation Of Solids (AREA)
  • Hydraulic Turbines (AREA)
  • Paper (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Automatic Analysis And Handling Materials Therefor (AREA)
  • Cyclones (AREA)

Claims (7)

  1. Roue de ventilation pour un séparateur pneumatique comprenant des ailettes de roue de ventilation (5) dont les extrémités radialement extérieures (6) sont inclinées vers l'arrière par rapport au sens de rotation (7) de la roue de ventilation (1), caractérisée en ce que, dans la région de l'extrémité radialement extérieure (6) des ailettes de roue de ventilation (5), la paroi avant (8), vue dans le sens de rotation (7), des ailettes de roue de ventilation (5) est inclinée par rapport à la direction radiale (10) d'un plus grand angle que la paroi arrière (2) de l'ailette.
  2. Roue de ventilation selon la revendication 1, caractérisée en ce que la paroi avant (8) de l'ailette est inclinée d'un angle (α) plus supérieur à 45° et la paroi arrière (9) de l'ailette est inclinée d'un angle (β) inférieur à 45°.
  3. Roue de ventilation selon la revendication 1 ou 2, caractérisée en ce que la paroi avant (8) de l'ailette est inclinée sur la direction radiale (10) d'un angle (α) compris entre 50° et 80°, de préférence entre 60° et 70°.
  4. Roue de ventilation selon une des revendications 1 à 3, caractérisée en ce que la paroi arrière (9) de l'ailette est inclinée sur la direction radiale (10) d'un angle (β) compris entre 30° et 45°, de préférence égal à environ 40 °.
  5. Roue de ventilation selon une des revendications 1 à 4, caractérisée en ce que la paroi avant (8) de l'ailette et la paroi arrière (9) de l'ailette sont incurvées vers la direction radiale (10) dans une région qui est éloignée de l'extrémité radialement extérieure (6) de l'ailette.
  6. Roue de ventilation selon une des revendications 1 à 5, caractérisée en ce que les ailettes (5) de la roue de ventilation présentent une section transversale plus forte dans leur région moyenne que dans la région de l'extrémité radialement extérieure (6) de l'ailette et de l'extrémité radialement intérieure (14) de l'ailette.
  7. Roue de ventilation selon une des revendications 1 à 6, caractérisée en ce que, dans la région de l'extrémité radialement intérieure (14), la paroi avant (8) des ailettes (5) de la roue de ventilation est inclinée dans le sens de la rotation (7) par rapport à la direction radiale (10) d'un angle (γ) compris entre 10° et 40°, de préférence entre 20° et 30°.
EP00890260A 2000-08-28 2000-08-28 Roue de triage Expired - Lifetime EP1184090B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
ES00890260T ES2220385T3 (es) 2000-08-28 2000-08-28 Rueda separadora.
DE50006828T DE50006828D1 (de) 2000-08-28 2000-08-28 Sichtrad
EP00890260A EP1184090B1 (fr) 2000-08-28 2000-08-28 Roue de triage
AT00890260T ATE269174T1 (de) 2000-08-28 2000-08-28 Sichtrad
US09/938,660 US6644478B2 (en) 2000-08-28 2001-08-27 Separating wheel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00890260A EP1184090B1 (fr) 2000-08-28 2000-08-28 Roue de triage

Publications (2)

Publication Number Publication Date
EP1184090A1 EP1184090A1 (fr) 2002-03-06
EP1184090B1 true EP1184090B1 (fr) 2004-06-16

Family

ID=8175961

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00890260A Expired - Lifetime EP1184090B1 (fr) 2000-08-28 2000-08-28 Roue de triage

Country Status (5)

Country Link
US (1) US6644478B2 (fr)
EP (1) EP1184090B1 (fr)
AT (1) ATE269174T1 (fr)
DE (1) DE50006828D1 (fr)
ES (1) ES2220385T3 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10261448A1 (de) * 2002-12-31 2004-07-29 Nied, Roland, Dr.-Ing. Beschaufelter Sichtrotor für Windsichter
CN103480577A (zh) * 2013-09-30 2014-01-01 阳承君 一种分级机的叶轮
DE102016106588B4 (de) * 2016-04-11 2023-12-14 Neuman & Esser Process Technology Gmbh Sichter
US10744534B2 (en) * 2016-12-02 2020-08-18 General Electric Technology Gmbh Classifier and method for separating particles
JP2022156406A (ja) * 2021-03-31 2022-10-14 三菱重工業株式会社 分級機及び発電プラント並びに分級機の運転方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE246049C (fr) 1911-03-02 1912-04-24
US2281318A (en) * 1939-12-09 1942-04-28 Gen Electric Bladed structure
US2453593A (en) * 1946-01-11 1948-11-09 Stratford Dev Corp Apparatus for separating entrained solids from gases
NL97925C (fr) * 1955-06-28
DE2967096D1 (en) * 1978-02-28 1984-08-16 Fred Mellor Fluid/particle separator unit
DD246049A1 (de) * 1986-02-14 1987-05-27 Dessau Zementanlagenbau Veb Verfahren und vorrichtung zur kontinuierlichen sichtung feinkoerniger feststoffe bei trennkorngroessen kleiner 60 my
JPH0751630A (ja) * 1993-08-19 1995-02-28 Mitsubishi Heavy Ind Ltd 竪型ローラミルの分級装置
AT404234B (de) * 1996-07-08 1998-09-25 Pmt Gesteinsvermahlungstechnik Sichtrad für einen windsichter
DE19743491C2 (de) * 1996-10-04 2003-03-20 Schmidt & Co Gmbh & Co Kg Windsichter mit Sichtrotor und Verfahren zur Trennung von Kornklassen
US6228151B1 (en) * 1999-08-18 2001-05-08 G.B.D. Corp. Apparatus and method for separating particles from a cyclonic fluid flow
US6224656B1 (en) * 1999-10-14 2001-05-01 Sankyo Rayjac Co., Ltd. Cleaner for both dry and wet use having a moveable ring connected to a fan, the moveable ring having circumferential ribs

Also Published As

Publication number Publication date
DE50006828D1 (de) 2004-07-22
US6644478B2 (en) 2003-11-11
US20020033357A1 (en) 2002-03-21
EP1184090A1 (fr) 2002-03-06
ATE269174T1 (de) 2004-07-15
ES2220385T3 (es) 2004-12-16

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