EP2142312A2 - Vorrichtung und verfahren zum sichten von aufgabegut - Google Patents
Vorrichtung und verfahren zum sichten von aufgabegutInfo
- Publication number
- EP2142312A2 EP2142312A2 EP08750058A EP08750058A EP2142312A2 EP 2142312 A2 EP2142312 A2 EP 2142312A2 EP 08750058 A EP08750058 A EP 08750058A EP 08750058 A EP08750058 A EP 08750058A EP 2142312 A2 EP2142312 A2 EP 2142312A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor
- sifting
- housing
- static
- gas
- 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
Links
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
-
- 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
- B07B4/08—Separating solids from solids by subjecting their mixture to gas currents while the mixtures are supported by sieves, screens, or like mechanical elements
-
- 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
-
- 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
- B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
- B07B9/02—Combinations of similar or different apparatus for separating solids from solids using gas currents
Definitions
- the invention relates to a device for the sifting of feed material with a static sifter, which has a ventilation base oriented at an angle to the vertical, through which viewing gas flows, and a downstream dynamic sifter comprising at least one rotor with a horizontal rotor axis.
- the feed material passes through feeders (conveyor belts / chutes) on the
- Ventilation bottom of the static classifier and then slide down over the vent bottom.
- the view air flowing through the feed material in cross flow carries the fines to the dynamic sifter, while the coarse material of the static sifter is discharged by gravity at the lower outlet.
- the fineness of the fine material of the static classifier can be influenced.
- the desired product fineness is set via the visual flow rate and the speed of the rotor.
- the classifying air should flow substantially tangentially to the rotor in order to support the centrifugal field built up by the rotor.
- the tangential flow is achieved by a spiral configuration of the housing surrounding the dynamic classifier in combination with a dynamically arranged rotor eccentrically arranged therewith.
- Flow conditions can also be seen, for example, from DE 103 50 518 A1.
- the centrifugal force acting on the particles and the direction of the Rotor's acting drag of the classifying air separates the feed material of the dynamic classifier into product and coarse material.
- an air classifier is further known in the viewing space at least two rod baskets are arranged in two planes perpendicular to the viewing plane vertical planes arranged one above the other, which are operated in opposite directions of rotation.
- the invention is based on the object of improving the visual efficiency of a static-dynamic classifier.
- the inventive device for sifting feed substantially consists of
- a static sifter which has a ventilation floor, which is oriented obliquely to the vertical, and through which viewing gas flows.
- a downstream dynamic classifier comprising at least one rotor with rotor blades and horizontal rotor axis, e. at least one outlet opening for the fines laden with fines, f. and a housing in which the static and the dynamic classifier are arranged, wherein the area surrounding the dynamic classifier of the
- Housing is designed as a housing spiral, so that there is a substantially tangential flow of the rotor with classifying gas.
- the direction of rotation of the rotor is the flow direction of the visual gas in the
- a further increase in the reformer Signsgrades the dynamic vision stage can be achieved in that the rotor blades are also inclined by 10 to 50 ° to the radial direction. Thereby, the classifier efficiency of the dynamic vision stage can be improved by 10% and more.
- baffles are provided in the region between the static and the dynamic classifier for optimizing the tangential flow of the rotor, wherein at least one of the baffles can be arranged adjustable.
- peripheral speed of the rotor is significantly increased over conventional operation, with a peripheral speed in the range of 15 to 35 m / s, preferably in the range of 20 to 30 m / s. s is considered particularly advantageous.
- the sighting device described above is particularly suitable in a grinding plant with a mill.
- the static sifter may at least partially serve to dissolve or deagglomerate the slugs coming out of the good bed roller mill.
- Fig. 2 is a detail view in the region of the rotor as well
- FIG 3 shows a flow chart of a grinding plant with a device according to the invention for the screening of feedstock.
- the apparatus 100 shown in FIG. 1 for the sifting of feed material 1 consists essentially of a static sifter 2, which has a ventilation base 4 oriented obliquely to the vertical, through which viewing gas 3 flows, and a downstream dynamic sifter 5, which has at least one rotor 6 with horizontal Rotor axis 7 includes.
- the static sifter 2 and the dynamic sifter 5 are arranged in a housing 8, which has an inlet opening 9 for discharging the feed material 1 on the aeration bottom 4 and an outlet opening 10 for the coarse material. Furthermore, an outlet opening 11 is provided for the laden with fines sighting gas.
- the area of the housing 1 surrounding the dynamic classifier 5 is designed as a housing spiral, so that a substantially tangential flow of the rotor results (see arrows 12, 13).
- the loading gas laden with fines thus flows in the illustrated embodiment, in a substantially clockwise direction in the housing spiral.
- the direction of rotation 14 of the rotor 6 is opposite to the flow direction (arrows 12, 13) of the classifying gas into the housing spiral, ie the rotor rotates in the illustration according to FIG. 1 in the counterclockwise direction.
- the rotor 6 has rotor blades which are set in such a way that they have an angle ⁇ of 10 to 50 °, preferably 25 to 35 ° to the radial direction 16, in which the rotor blades 15 are adjusted at its outer periphery with respect to the radial orientation in the direction of rotation 14 of the rotor.
- the coarse material of the dynamic stage thus contains significantly less fines, whereby the throughput can be significantly improved.
- the coarse material entrained with the classifying air passes around the rotor and is discharged via a channel 17 to the outlet opening 10.
- guide plates 18 may be provided in the area between the static and the dynamic classifier 2, which are preferably arranged adjustable.
- the baffles are aligned so that the greater part of the prepare for the production of the rotor 6 .
- an operation of the rotor 6 has a peripheral speed in the range of 15 to 35 m / s, preferably in the range of 20 to 30 m / s proved to be particularly advantageous.
- the above-described sifting apparatus 100 is suitable for use in a grinding plant together with a mill, in particular a good bed roller mill
- the coarse material passes from the device 100 via the outlet 10, optionally together with fresh goods 19, in the
- Conveyor such as a bucket elevator, to the inlet opening 9 of the device 100 for sifting the feed material passed. The fines will be over the
- Discharge port 1 1 withdrawn and fed to a separator 100 for separating the classifying air from the fine material.
- Classifiers as described for example in DE 10 2005 045 591, increase by 10% or more. As a result, the throughput and the electrical energy consumption of a grinding plant with a good bed roller mill can be considerably improved.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combined Means For Separation Of Solids (AREA)
- Crushing And Grinding (AREA)
- Disintegrating Or Milling (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007021545A DE102007021545B4 (de) | 2007-05-08 | 2007-05-08 | Vorrichtung und Verfahren zum Sichten von Aufgabegut und Mahlanlage |
PCT/EP2008/055501 WO2008135558A2 (de) | 2007-05-08 | 2008-05-05 | Vorrichtung und verfahren zum sichten von aufgabegut |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2142312A2 true EP2142312A2 (de) | 2010-01-13 |
EP2142312B1 EP2142312B1 (de) | 2012-04-18 |
Family
ID=39874155
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08750058A Not-in-force EP2142312B1 (de) | 2007-05-08 | 2008-05-05 | Vorrichtung und verfahren zum sichten von aufgabegut und mahlanlage |
Country Status (11)
Country | Link |
---|---|
US (1) | US8430246B2 (de) |
EP (1) | EP2142312B1 (de) |
CN (1) | CN101652191B (de) |
AT (1) | ATE553855T1 (de) |
BR (1) | BRPI0809019A8 (de) |
CA (1) | CA2680393C (de) |
DE (1) | DE102007021545B4 (de) |
DK (1) | DK2142312T3 (de) |
ES (1) | ES2383048T3 (de) |
MX (1) | MX2009010266A (de) |
WO (1) | WO2008135558A2 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011055762B4 (de) * | 2011-11-28 | 2014-08-28 | Maschinenfabrik Köppern GmbH & Co KG | Vorrichtung zum Sichten von körnigem Gut und Mahlanlage |
CN103008242B (zh) * | 2013-01-08 | 2015-08-26 | 潍坊市精华粉体工程设备有限公司 | 单箱体多级分级机 |
CN105562340B (zh) * | 2016-02-26 | 2017-07-28 | 重庆合盛工业有限公司 | 一种糠糙分离器 |
CN110975994B (zh) * | 2019-12-31 | 2021-07-20 | 南通利元亨机械有限公司 | 雷蒙磨进风蜗壳 |
DE102021001238B4 (de) * | 2021-03-09 | 2023-01-26 | Hosokawa Alpine Aktiengesellschaft | Zentrifugalkraft-Windsichter und Verfahren zur Sichtung von staubförmigen Gütern |
CN114345454A (zh) * | 2021-12-01 | 2022-04-15 | 中材(天津)粉体技术装备有限公司 | 一种高效低阻型立式辊磨机 |
CN115971040B (zh) * | 2022-12-16 | 2023-08-04 | 河北地质大学 | 一种自动筛制样品的装置 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE421021A (de) * | ||||
DE1607642A1 (de) * | 1966-10-22 | 1969-09-18 | Miag Muehlenbau & Ind Gmbh | Verfahren und Vorrichtung zum Abtrennen einer Grobfraktion aus einem pneumatisch gefoerderten Schuettgutstrom |
US4465194A (en) * | 1982-12-23 | 1984-08-14 | Universal Leaf Tobacco Co. | Threshed tobacco lead separator |
DD263468A1 (de) * | 1987-08-27 | 1989-01-04 | Dessau Zementanlagenbau Veb | Windsichter |
DE4223762B4 (de) * | 1992-07-18 | 2009-07-23 | Khd Humboldt Wedag Gmbh | Sichtereinrichtung zum Sichten von körnigem Gut und Umlaufmahlanlage mit Einschaltung einer solchen Sichtereinrichtung |
CN2142758Y (zh) * | 1992-12-23 | 1993-09-29 | 国家建筑材料工业局合肥水泥研究设计院 | 组合式多级高效空气选粉机 |
AT404234B (de) * | 1996-07-08 | 1998-09-25 | Pmt Gesteinsvermahlungstechnik | Sichtrad für einen windsichter |
DE29724707U1 (de) * | 1996-10-04 | 2003-02-20 | Schmidt & Co. GmbH & Co. KG, 63477 Maintal | Windsichter mit Sichtrotor |
DE19708956A1 (de) * | 1997-03-05 | 1998-09-10 | Krupp Polysius Ag | Sichter |
CN2382483Y (zh) * | 1999-07-12 | 2000-06-14 | 西安建筑科技大学 | 高效节能涡流空气分级机 |
DE10361609A1 (de) * | 2002-12-31 | 2004-07-15 | Nied, Roland, Dr.-Ing. | Sichtrotor mit von außen nach innen durchströmten Strömungskanälen zwischen radialgerichteten Rotorschaufeln für Windsichter |
DE10350518A1 (de) | 2003-10-29 | 2005-06-09 | Khd Humboldt Wedag Ag | Sichtereinrichtung zum Sichten von körnigem Gut |
CN2820347Y (zh) * | 2005-05-27 | 2006-09-27 | 北京化工大学 | 涡流空气分级机 |
DE102005045591A1 (de) * | 2005-09-23 | 2007-03-29 | Polysius Ag | Vorrichtung zum Sichten von Aufgabegut |
JP4144637B2 (ja) * | 2005-12-26 | 2008-09-03 | セイコーエプソン株式会社 | 印刷材収容体、基板、印刷装置および印刷材収容体を準備する方法 |
-
2007
- 2007-05-08 DE DE102007021545A patent/DE102007021545B4/de not_active Expired - Fee Related
-
2008
- 2008-05-05 ES ES08750058T patent/ES2383048T3/es active Active
- 2008-05-05 AT AT08750058T patent/ATE553855T1/de active
- 2008-05-05 EP EP08750058A patent/EP2142312B1/de not_active Not-in-force
- 2008-05-05 BR BRPI0809019A patent/BRPI0809019A8/pt not_active Application Discontinuation
- 2008-05-05 CA CA2680393A patent/CA2680393C/en not_active Expired - Fee Related
- 2008-05-05 WO PCT/EP2008/055501 patent/WO2008135558A2/de active Application Filing
- 2008-05-05 US US12/598,207 patent/US8430246B2/en not_active Expired - Fee Related
- 2008-05-05 CN CN2008800107798A patent/CN101652191B/zh not_active Expired - Fee Related
- 2008-05-05 DK DK08750058.3T patent/DK2142312T3/da active
- 2008-05-05 MX MX2009010266A patent/MX2009010266A/es active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO2008135558A2 * |
Also Published As
Publication number | Publication date |
---|---|
CN101652191B (zh) | 2012-09-26 |
CA2680393C (en) | 2014-08-12 |
WO2008135558A2 (de) | 2008-11-13 |
DE102007021545A1 (de) | 2008-11-27 |
US8430246B2 (en) | 2013-04-30 |
CN101652191A (zh) | 2010-02-17 |
CA2680393A1 (en) | 2008-11-13 |
WO2008135558A3 (de) | 2008-12-31 |
BRPI0809019A2 (pt) | 2014-09-23 |
US20100116720A1 (en) | 2010-05-13 |
DE102007021545B4 (de) | 2011-07-28 |
DK2142312T3 (da) | 2012-07-23 |
EP2142312B1 (de) | 2012-04-18 |
ATE553855T1 (de) | 2012-05-15 |
MX2009010266A (es) | 2009-10-12 |
ES2383048T3 (es) | 2012-06-15 |
BRPI0809019A8 (pt) | 2015-04-28 |
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