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EP2755777B1 - Separateur de matieres granuleuses - Google Patents

Separateur de matieres granuleuses Download PDF

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Publication number
EP2755777B1
EP2755777B1 EP12759107.1A EP12759107A EP2755777B1 EP 2755777 B1 EP2755777 B1 EP 2755777B1 EP 12759107 A EP12759107 A EP 12759107A EP 2755777 B1 EP2755777 B1 EP 2755777B1
Authority
EP
European Patent Office
Prior art keywords
air
separator
cage
fan wheel
fan
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.)
Active
Application number
EP12759107.1A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2755777A1 (fr
Inventor
Xavier Prignon
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.)
Magotteaux International SA
Original Assignee
Magotteaux International SA
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 Magotteaux International SA filed Critical Magotteaux International SA
Priority to PL12759107T priority Critical patent/PL2755777T3/pl
Publication of EP2755777A1 publication Critical patent/EP2755777A1/fr
Application granted granted Critical
Publication of EP2755777B1 publication Critical patent/EP2755777B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B07B7/10—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force having air recirculating within the apparatus
    • 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
    • B07B4/06—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall using revolving drums
    • 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 present invention relates to industrial equipment for separating granular materials and in particular to the classification of powders or the like using dynamic air separators.
  • the separation of materials into fractions of particles of different sizes can be done by means of dynamic air separators.
  • the materials concerned are powders with particle sizes of up to 1000 ⁇ m, such as cement, limestone or lime, ore and coal among others.
  • Dynamic separators have undergone several major evolutions allowing them to be classified into 3 large families. The first, generally known under the names “turbo”, “heyd” or “whirlwind” has been improved by a second called “Wedag” type. These separators can optionally have a cage instead of the selection blades.
  • EP2266715A1 discloses a separator where the material is not fed and dispersed above, but well below the cage or selection blades. Furthermore, the fan is not located at the outlet of the purified air duct, but on the contrary receives the air laden with material.
  • the document WO 2005/075115 presents a device for the classification of granular materials having the particularity of having a chamber for cycloning the fine fraction in the extension of the axis of the rotating stand.
  • This recovery chamber arranged coaxially with the rotating cage, is part of the body of the separator.
  • This type of air separator therefore does not require a cyclone or external filter to separate the fine material from the separation air.
  • the recovery chamber takes advantage of the air vortex created by the cage for cycloning.
  • the fan which sucks in the air on the outlet side of the separator and delivers it to the air inlet volute of the separator is, however, positioned outside the installation, which entails a significant bulk.
  • the air distribution must be done through a volute always designed for a determined air flow. It therefore does not allow optimum operation when the air flow varies.
  • the heart of the separator consists of a squirrel cage rotating around a vertical axis.
  • This cage consists of dishes or bars spaced apart and is surrounded by louvers making it possible to guide the air coming from the air distribution chamber of the separator before entering the cage.
  • the material to be separated ends up in the selection zone delimited by the outside of the cage and the deflectors.
  • the maximum size of particles entering the cage with air is determined by the rotational speed of the cage and the amount of air with which the separator is supplied. The larger particles remain outside the cage and are collected in the bottom of the coarse fraction collection chamber. The fine particles enter the cage with the air.
  • This air charged with fine particles is then directed to air / material separation means in order to collect the material.
  • These can be cyclones or filters external to the separator or - as described in WO 2005/075115 - in a fine particle recovery chamber integrated into the separator, adjacent and coaxial to the cage.
  • the cycloned or filtered air is then sucked into a fan and returned for all or part to the air distribution chamber of the separator.
  • this air distribution chamber consists of a spiral-shaped volute centered on the cage of the separator.
  • the distribution of the air depends on the shape of the volute, but also on the speed and the air flow.
  • deposits of material may appear in the volute which prevents uniform distribution of the air and therefore good separation efficiency.
  • the present invention aims to disclose a dynamic separator with a rotating air cage making it possible to avoid the use of an external fan.
  • the fan is integrated into the body of the separator, which improves the air distribution on the perimeter and the height of the cage and thus achieves a homogeneous air flow preventing the segregation of particles in the dead zones.
  • the separator of the present invention also aims to reduce the overall size of the installation and to be able to install a high performance separator in cramped places where this was not previously possible.
  • the separator according to the invention comprises an adjacent fine particle recovery chamber 2 and arranged coaxially in the extension of the rotating cage 1, this recovery chamber 2 being provided at one of its ends with a coaxial outlet duct 4 purified air, said duct comprising at its end a fan wheel 3.
  • This fan wheel 3 is positioned coaxially with the rotating cage 1 and with the chamber 2 for collecting fines.
  • the fan wheel 3 is driven by a motor, the speed of which will be adapted to the pressure drop in the separator.
  • ducts 7 Between the recirculation jacket of the fan 6 and the air distribution chamber 5 at the inlet of the separator can be installed a plurality of ducts 7 (see figure 9 ) which allow the air to recirculate from the fan to the air distribution chamber 5 around the rotating cage 1 of the separator. These conduits 7 will be distributed uniformly over 360 ° around the axis of the separator.
  • the cut-off dimension (point of separation of the grain sizes) of the separator is constant over the entire circumference of the separator cage.
  • a particular embodiment of the invention consists in replacing the plurality of conduits 7 by a single outer shell 19 consisting of a surface of revolution - of generally cylindrical or conical appearance - the diameter of which is between the diameter of the casing of the fan 6 and the outside diameter of the air distribution chamber 5 around the cage.
  • a single outer shell 19 consisting of a surface of revolution - of generally cylindrical or conical appearance - the diameter of which is between the diameter of the casing of the fan 6 and the outside diameter of the air distribution chamber 5 around the cage.
  • deflectors 9 at the junction between the ferrule 19 and the air distribution chamber 5 in order to give the desired direction to the air in the air distribution chamber 5.
  • the Fig. 8 shows another possible embodiment of the invention.
  • the fan wheel 3 is positioned coaxially with the separator at the end of the outlet duct 4 of the purified air as for the first embodiment of the invention, but this time the fan wheel 3 is positioned above of cage 1 of the separator.
  • the fine particle recovery chamber 2 is located below the rotating cage 1.
  • the purified air outlet duct 4 enters the upper part of the fines recovery chamber and passes through the rotating cage 1.
  • said duct 4 is equipped with anti-vortex deflectors 13 to reduce the speed of rotation of the air before opening into the wheel of the fan 3 located at its end.
  • the impeller 3 of the fan is located above the cage 1
  • recirculation through the ferrule 19 will be preferred.
  • Said ferrule will have the shape of a surface of revolution centered on the axis of the separator and will connect the casing of the fan 6 to the air distribution chamber 5.
  • the size of the ferrule 19 could be very reduced if the fan casing 6 and the air distribution chamber 5 are arranged close to each other.

Landscapes

  • Cyclones (AREA)
  • Combined Means For Separation Of Solids (AREA)
EP12759107.1A 2011-09-14 2012-09-12 Separateur de matieres granuleuses Active EP2755777B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL12759107T PL2755777T3 (pl) 2011-09-14 2012-09-12 Separator substancji ziarnistych

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE2011/0547A BE1020252A3 (fr) 2011-09-14 2011-09-14 Separateur de matieres granuleuses.
PCT/EP2012/067825 WO2013037820A1 (fr) 2011-09-14 2012-09-12 Separateur de matieres granuleuses

Publications (2)

Publication Number Publication Date
EP2755777A1 EP2755777A1 (fr) 2014-07-23
EP2755777B1 true EP2755777B1 (fr) 2020-08-26

Family

ID=46851476

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12759107.1A Active EP2755777B1 (fr) 2011-09-14 2012-09-12 Separateur de matieres granuleuses

Country Status (16)

Country Link
US (1) US9144826B2 (zh)
EP (1) EP2755777B1 (zh)
JP (1) JP6120860B2 (zh)
CN (1) CN103781560B (zh)
AU (1) AU2012307457B2 (zh)
BE (1) BE1020252A3 (zh)
BR (1) BR112014005658B1 (zh)
CA (1) CA2847729C (zh)
CL (1) CL2014000454A1 (zh)
DK (1) DK2755777T3 (zh)
ES (1) ES2825524T3 (zh)
MX (1) MX343650B (zh)
PL (1) PL2755777T3 (zh)
RU (1) RU2592624C2 (zh)
WO (1) WO2013037820A1 (zh)
ZA (1) ZA201401602B (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016126961A1 (en) * 2015-02-06 2016-08-11 Edw. C. Levy Co. Closed-loop centrifugal air classifying system and method for utilizing the same
CN105329565B (zh) * 2015-11-29 2017-07-14 重庆元创汽车整线集成有限公司 一种料斗
CN110935626B (zh) * 2019-12-19 2021-08-17 文登市兴文新材料有限公司 一种化工用新型化工物料筛选机

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU119784A1 (ru) * 1958-09-06 1958-11-30 С.М. Гольдман Воздушно-центробежный сепаратор
DE1757819B1 (de) * 1968-06-19 1972-02-03 Polysius Ag Windsichter
JPS5111475U (zh) * 1974-07-12 1976-01-28
SU735327A1 (ru) * 1977-06-20 1980-05-25 Сибирский Научно-Исследовательский Институт Механизации И Электрификации Сельского Хозяйства "Сибимэ" Центробежный пневматический сепаратор
SU954118A1 (ru) * 1978-05-15 1982-08-30 Алтайский политехнический институт им.И.И.Ползунова Пневматический сепаратор дл разделени сыпучих смесей
US4296864A (en) 1979-07-17 1981-10-27 Onoda Cement Co., Ltd. Air classifier
US4551241A (en) 1984-02-08 1985-11-05 Sturtevant, Inc. Particle classifier
JPS6193880A (ja) * 1984-10-15 1986-05-12 日本ニユ−マチツク工業株式会社 分級機
DE19743491C2 (de) * 1996-10-04 2003-03-20 Schmidt & Co Gmbh & Co Kg Windsichter mit Sichtrotor und Verfahren zur Trennung von Kornklassen
EP1561519A1 (fr) 2004-02-04 2005-08-10 Magotteaux International S.A. Séparateur de matière granuleuse
CN2829917Y (zh) * 2005-08-31 2006-10-25 郑德明 设有导流板的高效粉尘分级装置
CN100522393C (zh) * 2005-09-19 2009-08-05 夏纪勇 粗颗粒选粉机
DE202005017221U1 (de) * 2005-11-02 2006-03-09 Ottow, Manfred, Dr.-Ing. Klassierung von Holzspänen und Hackschnitzeln
JP4907655B2 (ja) * 2006-06-13 2012-04-04 日本ニューマチック工業株式会社 気流分級機および分級プラント
RU2356649C1 (ru) * 2007-12-14 2009-05-27 Государственное образовательное учреждение высшего профессионального образования "Алтайский государственный технический университет им. И.И. Ползунова" (АлтГТУ) Способ пневмосепарации дисперсного материала
DE102009030396A1 (de) * 2009-06-25 2010-12-30 Hosokawa Alpine Ag Umluftwindsichter mit schwingungstechnischer Entkopplung von Sichterkopf und Gehäuse

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP2755777A1 (fr) 2014-07-23
CA2847729A1 (en) 2013-03-21
CA2847729C (en) 2019-08-06
DK2755777T3 (da) 2020-11-02
RU2592624C2 (ru) 2016-07-27
MX343650B (es) 2016-11-14
CL2014000454A1 (es) 2014-10-10
JP6120860B2 (ja) 2017-04-26
US20140251878A1 (en) 2014-09-11
ES2825524T3 (es) 2021-05-17
US9144826B2 (en) 2015-09-29
AU2012307457A1 (en) 2014-03-06
CN103781560B (zh) 2019-01-11
MX2014003059A (es) 2014-09-15
BR112014005658B1 (pt) 2020-06-02
JP2014526379A (ja) 2014-10-06
BE1020252A3 (fr) 2013-07-02
CN103781560A (zh) 2014-05-07
BR112014005658A2 (pt) 2017-03-28
RU2014108961A (ru) 2015-10-20
ZA201401602B (en) 2014-12-23
WO2013037820A1 (fr) 2013-03-21
PL2755777T3 (pl) 2021-07-05
AU2012307457B2 (en) 2017-01-19

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