EP1287911A1 - Séparateur pour matières granulaires - Google Patents

Séparateur pour matières granulaires Download PDF

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Publication number
EP1287911A1
EP1287911A1 EP02015149A EP02015149A EP1287911A1 EP 1287911 A1 EP1287911 A1 EP 1287911A1 EP 02015149 A EP02015149 A EP 02015149A EP 02015149 A EP02015149 A EP 02015149A EP 1287911 A1 EP1287911 A1 EP 1287911A1
Authority
EP
European Patent Office
Prior art keywords
classifier
visible
housing
floods
cascade
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
EP02015149A
Other languages
German (de)
English (en)
Other versions
EP1287911B1 (fr
Inventor
Albert Süssegger
Alexander Hagedorn
Immo Behrndt
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.)
KHD Humboldt Wedag AG
Original Assignee
KHD Humboldt Wedag AG
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 KHD Humboldt Wedag AG filed Critical KHD Humboldt Wedag AG
Publication of EP1287911A1 publication Critical patent/EP1287911A1/fr
Application granted granted Critical
Publication of EP1287911B1 publication Critical patent/EP1287911B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • B07B4/04—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall in cascades

Definitions

  • the invention relates to a classifier for classifying granular material, with an approximately V-shaped housing in vertical section, into which at an angle deviating from the vertical the stair cascade forming a V-leg is permeable to the sight gas is installed, which is opposite through a visual zone separated blind-like inclined downward inclined the other V-shaped overlapping visible floods arranged and above the viewing zone on the top of the housing are the viewing goods entry opening and below the viewing zone on the underside of the housing the discharge opening for the coarse material fraction are arranged.
  • Such a classifier is clean, since it has no moving parts static classifier, and it is in principle from EP-B 0 650 763 Fig. 2nd or also known from DE-A 196 48 841.
  • the feed to be sifted fails Press scoops of a high pressure roller mill to carry out the Good bed crushing can exist due to gravity cascading over a series of steps in a staircase cascade, by through the classifying air.
  • these are deagglomerated, and the flow of visible air first removes the fine material from the cascade curtain in cross flow and transports it via an approximately parallel to the stair cascade arranged row of viewing channels rising obliquely upwards, the one sloping downwards between the blinds Visible floods lying one above the other are arranged for the discharge of fines.
  • Such a static cascade sifter is said to be in the view channels between the visual floods work like an upstream classifier. But it is does not always guarantee that in the field of vision in cross flow selected fines through the arranged between the visible floods rising view channels through the view air flow is carried upwards and carried out because a certain one Visual air flow rate is required, which is not could always be reached in all view channels. Besides, could it happens that part of the fine material differs from the coarse grain fraction not resolved and has been carried out together with this. Because the separation efficiency of the known static V-classifier or Cascade classifier was not yet optimized, it has already been suggested the cascade classifier another classifier (static or dynamic) immediately afterwards, but what with a structural Effort and associated with an increase in pressure loss is.
  • the invention has for its object a simply built static V-classifier or cascade classifier of the aforementioned To create kind, which with comparatively low pressure loss characterized by a high separation efficiency, and possibly also the Possibility offers, in a simple way, the separating limit of the classifier to be able to change.
  • Characteristic of the static V-classifier according to the invention Stair cascade and visible floods is that at the top of the visible floods, which are the view channels running diagonally upwards from below separate the upstream classifier part of the classifier, upwardly extending baffles are arranged for regulation the sight gas velocity in the individual between the Visible flow channels are adjustable, and together or individually adjustable. In this way can be influenced on the exit speed of the Sight air from the sight channels and thus for safe removal of the selected fine material from the classifier together with the sight gas. At the same time, rule intervention on the individual adjustable baffles the gas velocity in the individual Viewing channels are evened out. In any case, the invention static separator, a high separation efficiency can be set, without buying this with a high pressure loss of the classifier have to.
  • the adjustable baffles can be on the top of the visible floods be pivotally articulated.
  • the baffles can also be used otherwise arranged pivotably and / or displaceably in the viewing housing be to z. B. by narrowing the outlet cross section for the classifying gas at the outlet from those arranged between the classifying floods View channels the flow rate of the with the To be able to increase the fine gas laden sight gas.
  • the classifier housing in the downstream area after the visible floods and baffles provided with inlet openings for the introduction of secondary air be then used as lifting air for the safe excavation of the fine material fraction upwards from the outlet opening for the fine material fraction serves. Furthermore, according to a feature of the invention, the classifier housing somewhat above the discharge opening for the coarse material fraction an inlet opening for purging air for checking the coarse material fraction and support for the transport of the fines from the Have classifiers. All of these measures contribute to increasing the Separation efficiency of the static classifier according to the invention at.
  • At least one Side wall of the classifier housing which is in the downstream area is arranged after the visible floods and baffles, e.g. B. the rear end wall at the fine material outlet of the classifier housing, swiveling be arranged.
  • B. in the case of a desired very fine dividing line this end wall swung in and through
  • the associated lower sight gas throughput is the flow rate on the for the removal of the fine material fraction required minimum value adjustable.
  • the invention Sifter is therefore not only due to its high separation efficiency excellent, but it also offers the option of simple Way to change the separator limit.
  • the classifier has a housing 10, in the left housing part side air 11 from the side, in the case of drying moist visible material also flows in a drying gas as the visible gas and from the right part of the housing the one loaded with the fine goods Visible air upwards 12 or at any other angle, e.g. B. 12a flows out via a fine material separator from a suction fan is subtracted.
  • visual air 12 loaded with the fine material directly to a re-sifter feed which can be a static or a dynamic sifter can.
  • the housing 10 is a cascade of stairs permeable to the visible air 11 13 with an angle 31 deviating from the vertical, which can be in a range of 5 ° to 45 °, installed obliquely.
  • a cross-flow viewing zone 14 Opposite the stair cascade and approximately separated by a cross-flow viewing zone 14 into the classifier housing
  • the other V-leg rises obliquely like a blind visible overlaps 15 forming one above the other, the angle of inclination 32 of the visible floods to the vertical in one Range from 0 ° to 35 °.
  • Above the crossflow viewing zone 14 is the entry opening 16 for the Visible material 17 and below this visible zone is on the underside of the housing the discharge opening 18 for the coarse material fraction freed from fines 19 arranged.
  • the good 17 to be sifted on the sifter falls due to gravity cascading from top to bottom over each Steps of the staircase cascade 13, which is about 11 in the sight air Cross flow is flowed through.
  • the angle of inclination 33 of each Steps of this cascade staircase to the vertical is the flow angle of the feed material is set accordingly in the range from 20 ° to 60 °. This flow of visible air tears the fine material out of the cascade good veil and transports it across the diagonally from bottom to top rising view channels between the view floods 15 upwards to discharge for the visible air loaded with fine material 12.
  • the invention are at the tops and top ends Visible flooding 15 upwardly extending guide plates 21 pivotable articulated to regulate the air speed in the individual between the viewing channels 15 viewing channels together or individually adjustable. This serves to make it more even the air speed in the individual viewing channels and thus also to improve the selectivity of the Sighting.
  • the classifier housing 10 in the downstream area after the visible floods 15 and baffles 21 with optionally blind-shaped inlet openings 22 for Introduction of secondary air 23 as lifting air for safe lifting the fine fraction upward from the classifier.
  • the Louver flaps of these inlet openings 22 can be fixed or adjustable be executed, and they can be from an entry box 24 be included for the secondary air 23.
  • Secondary air 23 the separating limit of the classifier towards finer Particle sizes are expanded.
  • the classifier housing 10 slightly above the discharge opening 18 for the coarse material fraction 19 an inlet opening 25 for purge air 26 for indulgence the coarse material fraction and support for the transport of the Have fines from the classifier.
  • the volume flow of this Purge air 26 can be adjusted by means of throttle element 26a.
  • the conditional by the introduction of the secondary air 23 and the outlet of the sight air from the lowest between the sight floods 15 arranged viewing channels may have an obstructive effect due to the Initiation of the purge air 26 canceled.
  • a perforated sheet or blind wall 28 be arranged with blind-like adjustable elements or interchangeable perforated plates, so that for each level the Stair cascade 13 and the free average cross section for each visible flood 15 can be set individually for the clear air can.
  • Visible gas baffles 29 with throttle bodies 30 may be installed can for the purpose of even distribution of the classifying air / classifying gas 11 on the staircase cascade, whereby the separation efficiency of the invention Classifier is also increased.
  • the location and number the entry openings can vary depending on requirements, see 11a, 22a and throttle element 30a and sifting gas guide plates 29a.
  • the rear end wall located in the downstream area 35 or 35a can be pivoted at the fine material outlet 12, so that e.g. B. in the case of a very fine separation limit and related low visible air flow rate the flow rate to the minimum value required for the removal of the fine material fraction is adjustable.
  • the inclination angle 34 of the lower boundary wall measured in relation to the horizontal of the sight gas entry channel 27 is larger than the natural one Slope angle of the visible material and it is at least 50 °.
  • the inlet opening for the classifying air or primary air 11 or 11a can in principle at any height of the classifier and in one or multiple execution be arranged.
  • the vertical distance between the sight entry opening 16 and the discharge opening 18 for the coarse material fraction 19 be at least about 4 m.
  • the number of visible floods 15 depends on the maximum particle size of the fine material and the size of the classifier, the height 38 of the visible floods generally not exceeding 600 mm and not less than 100 mm.
  • the length 37 of the visible floods 15 should be at least 3.5 times their height.
  • the maximum grain size of the feed material determines the distance 39 between the cascade stairs 13 and visible floods 15. This distance is at least equal to the height of the visible floods 38.
  • Fig. 2 shows as section A-A through Fig. 1 that the inventive Sifter be double flow and in this case two mirror images Can have halves.
  • the sifter can also have more than two floods.

Landscapes

  • Combined Means For Separation Of Solids (AREA)
EP02015149A 2001-08-29 2002-07-06 Séparateur pour matières granulaires Expired - Fee Related EP1287911B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10142162A DE10142162A1 (de) 2001-08-29 2001-08-29 Sichter zum Sichten von körnigem Gut
DE10142162 2001-08-29

Publications (2)

Publication Number Publication Date
EP1287911A1 true EP1287911A1 (fr) 2003-03-05
EP1287911B1 EP1287911B1 (fr) 2007-08-01

Family

ID=7696882

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02015149A Expired - Fee Related EP1287911B1 (fr) 2001-08-29 2002-07-06 Séparateur pour matières granulaires

Country Status (4)

Country Link
US (1) US6845867B2 (fr)
EP (1) EP1287911B1 (fr)
DE (2) DE10142162A1 (fr)
DK (1) DK1287911T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104259103A (zh) * 2014-09-23 2015-01-07 石河子开发区天佐种子机械有限责任公司 导风装置、带有导风装置的筛板以及清选机
CN105052367A (zh) * 2015-07-30 2015-11-18 四川刚毅科技集团有限公司 用于收割机上的振动筛导风板结构

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005045591A1 (de) * 2005-09-23 2007-03-29 Polysius Ag Vorrichtung zum Sichten von Aufgabegut
JP4785802B2 (ja) * 2007-07-31 2011-10-05 株式会社日清製粉グループ本社 粉体分級装置
TWI483787B (zh) * 2007-09-27 2015-05-11 Mitsubishi Hitachi Power Sys A grading device and an upright pulverizing device having the classifying device and a coal fired boiler device
US8097059B2 (en) * 2008-09-15 2012-01-17 Alstom Technology Ltd Exhauster bypass system
US8123041B2 (en) * 2008-11-12 2012-02-28 Airomachus, Co. Method and device for separation of a loose mixture in a fluid medium
US9085014B2 (en) * 2011-03-23 2015-07-21 Carter Day International, Inc. Vertical drop product cleaner with perforated intake manifold
DE102011055762B4 (de) * 2011-11-28 2014-08-28 Maschinenfabrik Köppern GmbH & Co KG Vorrichtung zum Sichten von körnigem Gut und Mahlanlage
US9211547B2 (en) 2013-01-24 2015-12-15 Lp Amina Llc Classifier
US9643800B2 (en) * 2013-02-23 2017-05-09 Phillip Douglas Horizontal support system
US10106338B2 (en) * 2013-02-23 2018-10-23 Phillip Allan Douglas Material separator for a vertical pneumatic system
PL232821B1 (pl) * 2013-11-26 2019-07-31 Czech Adam Przed Obrotu Surowcami Wtornymi Hermex Urządzenie do czyszczenia i klasyfikacji ziarnowej drobnych odpadów metalurgicznych oraz sposób czyszczenia i klasyfikacji ziarnowej drobnych odpadów metalurgicznych
DE102014001384B4 (de) 2014-02-01 2018-03-29 Khd Humboldt Wedag Gmbh Ringförmiger Kaskadensichter mit nachgeschaltetem Stabkorbsichter
UA111922C2 (uk) * 2015-05-25 2016-06-24 Олена Іванівна Кострубяк Аеродинамічний рециркуляційний сепаратор сипучих матеріалів
DE102017110113B4 (de) 2017-05-10 2022-12-08 Khd Humboldt Wedag Gmbh V-Sichter aufweisend Fluten mit Flügelprofil

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1530277A (en) * 1922-11-13 1925-03-17 Wonder Grain Cleaner Company Grain cleaner
GB413294A (en) * 1933-01-11 1934-07-11 Roland Herbert Allen Improvements in and relating to the separation of dust and fine material from powdered or granular material especially coal
US2041591A (en) * 1933-04-12 1936-05-19 Brown Grigsby Gold Mining Comp Separator
DE4223762A1 (de) * 1992-07-18 1994-01-20 Kloeckner Humboldt Deutz Ag Sichter zum Sichten von körnigem Gut und Mahlanlage mit Einschaltung eines solchen Sichters
DE19648841A1 (de) * 1996-11-26 1998-05-28 Deutz Ag Sichter zum Sichten von körnigem Gut
EP0650763B1 (fr) * 1993-10-30 1998-12-02 DEUTZ Aktiengesellschaft Installation de broyage en circuit

Family Cites Families (8)

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DE356813C (de) * 1921-02-18 1922-07-28 Emil Diehl Dipl Ing Verfahren und Vorrichtung zur Abscheidung und getrennten Gewinnung (Sichtung) des Staubes aus staubbaltigen Materialien, wie Kohle u. dgl., mittels Luftstromes
US1655575A (en) * 1926-11-24 1928-01-10 Albert H Stebbins Classifier
US2956680A (en) * 1956-01-27 1960-10-18 Babcock & Wilcox Co Method of and apparatus for separating ash and cleaning shot
US3426893A (en) * 1967-04-18 1969-02-11 Kennedy Van Saun Co Method and apparatus for classifying finely-divided solids carried in a gas stream
CA1182073A (fr) * 1981-12-30 1985-02-05 C. Thomas Humphrey Depoussiereur a bancs jumeles pour les cereales
US4618415A (en) * 1984-08-31 1986-10-21 Amf Incorporated Tobacco separator
DE19944421A1 (de) * 1999-09-16 2001-03-22 Kloeckner Humboldt Wedag Sichtereinrichtung zur Sichtung von körnigem Gut
US6405405B1 (en) * 2000-04-20 2002-06-18 Carter Day International, Inc. Product cleaner with air flow control

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1530277A (en) * 1922-11-13 1925-03-17 Wonder Grain Cleaner Company Grain cleaner
GB413294A (en) * 1933-01-11 1934-07-11 Roland Herbert Allen Improvements in and relating to the separation of dust and fine material from powdered or granular material especially coal
US2041591A (en) * 1933-04-12 1936-05-19 Brown Grigsby Gold Mining Comp Separator
DE4223762A1 (de) * 1992-07-18 1994-01-20 Kloeckner Humboldt Deutz Ag Sichter zum Sichten von körnigem Gut und Mahlanlage mit Einschaltung eines solchen Sichters
EP0650763B1 (fr) * 1993-10-30 1998-12-02 DEUTZ Aktiengesellschaft Installation de broyage en circuit
DE19648841A1 (de) * 1996-11-26 1998-05-28 Deutz Ag Sichter zum Sichten von körnigem Gut

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104259103A (zh) * 2014-09-23 2015-01-07 石河子开发区天佐种子机械有限责任公司 导风装置、带有导风装置的筛板以及清选机
CN104259103B (zh) * 2014-09-23 2016-08-17 石河子开发区天佐种子机械有限责任公司 导风装置、带有导风装置的筛板以及清选机
CN105052367A (zh) * 2015-07-30 2015-11-18 四川刚毅科技集团有限公司 用于收割机上的振动筛导风板结构

Also Published As

Publication number Publication date
DE10142162A1 (de) 2003-03-20
EP1287911B1 (fr) 2007-08-01
DK1287911T3 (da) 2007-12-03
US6845867B2 (en) 2005-01-25
DE50210584D1 (de) 2007-09-13
US20030075486A1 (en) 2003-04-24

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