EP1184090A1 - Roue de triage - Google Patents

Roue de triage Download PDF

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Publication number
EP1184090A1
EP1184090A1 EP00890260A EP00890260A EP1184090A1 EP 1184090 A1 EP1184090 A1 EP 1184090A1 EP 00890260 A EP00890260 A EP 00890260A EP 00890260 A EP00890260 A EP 00890260A EP 1184090 A1 EP1184090 A1 EP 1184090A1
Authority
EP
European Patent Office
Prior art keywords
angle
blades
blade wall
classifying
wheel
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
EP00890260A
Other languages
German (de)
English (en)
Other versions
EP1184090B1 (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 a wind classifier with classifying wheel blades, whose radially outer blade ends in the direction of rotation of the sight wheel are inclined backwards.
  • Classifying wheels with classifying wheel blades which are inclined against the direction of rotation of the classifying wheel are e.g. known from DD 246 049 A1.
  • the visual behavior i.e. the exact There is generally a separation between coarse and fine grain The better the blades are inclined, the better. the bigger is the angle between the blades and the radial direction.
  • the invention is therefore based on the object, a generic To provide a view wheel by tilting backwards Blade ends achieve the best possible visual behavior, which is the result impending danger of deposits of visible material on the rear Avoid the bucket wall of the classifying wheel vanes as far as possible becomes.
  • the two desired ones Effects achieved in an advantageous manner.
  • a very inclined front blade wall good visual behavior achieved because of larger or heavier particles due to the strong inclination of the front blade wall and the result due to the higher centrifugal forces entering the channel between the sight wheel blades is difficult.
  • the lesser Inclination of the rear bucket wall of the sight wheel buckets with reference to the radial is further prevented that visible material on the attaches to the rear blade wall of the classifying wheel blades.
  • This will very strong inclinations of the blade ends possible, which are for powder qualities with a maximum grain size of less than 30 microns very advantageous impact.
  • the respective angle of the front and rear blade wall of the Sight wheel blades depend on several influencing factors, such as the speed of the sight wheel, type and composition of the sight good and desired selectivity. As a rule, however, good visual behavior achieved when the front blade wall is at an angle larger than about 45 ° and the rear bucket wall at an angle is inclined less than about 45 °.
  • Fig. 1 shows a section of a sight wheel according to the invention 1, which, as usual, has a hub 2 and an impeller ring 4, which are connected to each other via spokes 3.
  • a plurality of classifying wheel blades 5 are arranged, their radial outer blade ends 6 against the arrow 7
  • Direction of rotation of the sight wheel 1 are inclined backwards.
  • the blades 5 - seen in the direction of rotation 7 - have a front one Blade wall 8 and a rear blade wall 9.
  • the radially outer blade end 6 is the front blade wall 8 with respect to the radial direction 10 at an angle ⁇ of approximately 60 ° inclined, whereas the rear blade wall 9 at an angle ⁇ of is inclined approximately 45 °.
  • the outer blade end 6 is also an end face 11, which is shown in the Embodiment inclined to the radial 10 at an angle of 90 ° the outer radius of the classifying wheel in the area of the classifying wheel blades 5 defined.
  • the front blade wall 8 of the Class wheel blades 5 initially have a substantially flat region 12 on the inside of the classifying wheel 1 towards a curved area 13 passes.
  • the rear blade wall 9 of the sight wheel blades 5 is away from the outer blade end 6 with a substantially Continuous curvature equipped, the radius of curvature larger than the radius of curvature in area 13 on the front blade wall 8 is. This results in a cross-sectional shape of the classifying wheel blades 5, from the outer blade end 6 to the central region 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 inclined to be at an angle ⁇ to the radial in the direction of rotation 7 is inclined.
  • the angle ⁇ is preferably between 10 ° and 40 °, particularly preferably between 20 ° and 30 °.
  • Class wheel blades 5 shown, the front blade wall 8 in the area of the outer blade end 6 at an angle ⁇ of approx. 70 ° and their rear blade wall 9 an angle ⁇ of approx. 45 ° to the radial 10 are inclined.
  • the classifying wheel blades 5 from FIG. 2 also differ in this respect from the sight wheel blades 5 of Fig. 1 that in Fig. 2, the rear blade wall 9 in Area of the outer blade end 6 a substantially flat Has area 16.
  • the front blade wall 8 and the rear Blade wall 9 are connected to the flat areas 12 and 16 curved and can be approximately parallel in the region of the inner end 14 be aligned with the radial 10.
  • the classifying wheel according to the invention With the classifying wheel according to the invention, fine and very fine grain sizes can be achieved from a flow of particulate matter through targeted guidance of a Gas flow in the area of entry of the flow between the Classifying wheel blades (5) can be separated into the classifying wheel.
  • finest powder fractions can be obtained. This essentially becomes thereby achieved that the particle-laden gas flow of a higher Centrifugal force is applied to pass through the channels between the classifying vanes (5) to get into the inner area of the sight wheel, than this correspond to the peripheral speed of the classifying wheel would. Due to the lower inclination of the rear bucket wall (9) becomes the otherwise problematic deposition of visible material prevented on the rear bucket wall (9).

Landscapes

  • Combined Means For Separation Of Solids (AREA)
  • Cyclones (AREA)
  • Hydraulic Turbines (AREA)
  • Paper (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Automatic Analysis And Handling Materials Therefor (AREA)
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 true EP1184090A1 (fr) 2002-03-06
EP1184090B1 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)

Cited By (2)

* 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
WO2017178379A3 (fr) * 2016-04-11 2017-12-07 Neuman & Esser Gmbh Mahl- Und Sichtsysteme Séparateur

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103480577A (zh) * 2013-09-30 2014-01-01 阳承君 一种分级机的叶轮
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

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE19743491A1 (de) * 1996-10-04 1998-04-16 Schmidt & Co Gmbh & Co Kg Windsichter mit Sichtrotor

Family Cites Families (8)

* 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
AT404234B (de) * 1996-07-08 1998-09-25 Pmt Gesteinsvermahlungstechnik Sichtrad für einen windsichter
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE19743491A1 (de) * 1996-10-04 1998-04-16 Schmidt & Co Gmbh & Co Kg Windsichter mit Sichtrotor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 05 30 June 1995 (1995-06-30) *

Cited By (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
WO2017178379A3 (fr) * 2016-04-11 2017-12-07 Neuman & Esser Gmbh Mahl- Und Sichtsysteme Séparateur
EP3461565A1 (fr) * 2016-04-11 2019-04-03 Neumann & Esser Process Technology Gmbh Séparateur
CN113042368A (zh) * 2016-04-11 2021-06-29 诺曼艾索工艺技术有限公司 分选机
US11117167B2 (en) 2016-04-11 2021-09-14 Neuman & Esser Process Technology Gmbh Separator

Also Published As

Publication number Publication date
DE50006828D1 (de) 2004-07-22
US6644478B2 (en) 2003-11-11
US20020033357A1 (en) 2002-03-21
ATE269174T1 (de) 2004-07-15
EP1184090B1 (fr) 2004-06-16
ES2220385T3 (es) 2004-12-16

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