EP0850110B1 - Windsichter und einrotorige sichtermühle mit einem solchen windsichter - Google Patents

Windsichter und einrotorige sichtermühle mit einem solchen windsichter Download PDF

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Publication number
EP0850110B1
EP0850110B1 EP96930138A EP96930138A EP0850110B1 EP 0850110 B1 EP0850110 B1 EP 0850110B1 EP 96930138 A EP96930138 A EP 96930138A EP 96930138 A EP96930138 A EP 96930138A EP 0850110 B1 EP0850110 B1 EP 0850110B1
Authority
EP
European Patent Office
Prior art keywords
separator
wheel
blades
mill
disc
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
EP96930138A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0850110A1 (de
Inventor
Roland Dr.-Ing. Nied
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Individual
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Individual
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Filing date
Publication date
Priority claimed from DE19535524A external-priority patent/DE19535524A1/de
Application filed by Individual filed Critical Individual
Publication of EP0850110A1 publication Critical patent/EP0850110A1/de
Application granted granted Critical
Publication of EP0850110B1 publication Critical patent/EP0850110B1/de
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
    • B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
    • B07B11/04—Control arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
    • B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
    • 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 regrind At the end of a grinding process, the regrind generally has a different grain and requires classification or sighting. Accordingly, in general, mill and Sifters combined to form a functional unit.
  • the starting product is entered into the mill at the end of the
  • the grinding material freed from the coarse material arrives into the classifier, where the regrind with coarser and finer grain (larger and smaller mass) from each other be separated.
  • Mill and classifier are subject to different working conditions, which are easily taken into account can or can be easily created, if the mill and sifter are structurally independent of each other are.
  • beater mill and air classifier For the design of beater mill and air classifier is an important point of view is the lack of a solid relationship between the speeds of the mill and classifier.
  • the speeds from sifter and mill must be independent of each other be determinable and changeable. That means nothing special Problem when sifter and mill are independent of each other Devices with independent drives are.
  • a classifier mill of the generic type is known EP-A-0,369,399th With it are classifier and mill part each with its own drive, which is independent are controllable from each other, the drive of the mill part acts on a disc that is independent of the classifier wheel the percussion tools can rotate and on their outer circumference are located and the drive of the classifying wheel on connected to the one cover disk of the classifying wheel Fines outlet, one with the classifying wheel rotating tube is.
  • the present invention is based on the desire to solve the problem in a more appropriate way. task It is therefore the invention, starting from a classifier mill, a way to point out like a beater mill and a sifter into a single device with only one Drive can be summarized, but still with reasonable effort mill and sifter independently can be regulated. Starting point for the solution this task is the mathematical above Relationship.
  • the invention runs for practical implementation on two solution variants, both of which are shown on the mathematical relationship.
  • the single-rotor classifier mill according to FIG. 1 has in itself known manner on the rotor 1, the disc 2a with Impact tools 2 on their outer circumference and a cover plate 1a of the classifier with those firmly connected to it Sifter blades 4 includes.
  • the striking tools work with a material web 3 on the inside of the housing of the device together. This in the interaction between striking tools 2 on the one hand and grinding track 3 on the other hand crushed Grist comes radially together with classifying air from the outside into the channels between the viewing blades 4, the cover plate 1a and the second cover plate on the outlet side 7 of the classifier, where the sighting in coarse and fine material he follows.
  • the fines i.e.
  • the ground product with a relative low mass is counteracted by the sight air the centrifugal force radially from the outside in through the sight wheel, i.e. whose blade channels between the blades 4 and Cover disks 1a, 7 towed to pass through the central fines outlet 6, which is surrounded by the second cover plate 7 is to get out of the classifier mill and the other Treatment to be fed, usually the separation in fine material and classifying air in a filter.
  • the coarse material i.e. the ground product with a relatively large mass is in Reject wheel rejected under the influence of centrifugal force, gets into the sphere of influence of striking tools again 2 and grinding track 3 and is so often returned until particles of relatively low mass were formed are from the classifier mill in the manner described be brought out.
  • the starting product passes through the product entry 10 into the area of impact of the striking tools 2, the starting product is in bulk and fines disassembled, coarse and fine goods are described in the Treated wisely.
  • the product-related mode of action of the striking tools depends on the speed of the mill parts with the Disc 2a and the striking tools attached to it. This speed depends on the speed of the motor 12, changing the speed of the mill by changing the engine speed itself or at constant Speed of the engine by means of a sub and / or transmission gear can be effected. With the speed The mill will also change the speed of the classifier wheel cover disk 1a directly connected to disk 2a, the viewing blades 4 and the cover plate 7, if necessary changed. In spite of this dependency To be able to change the degree of separation of the classifier is Cover disk 7 formed as an iris diaphragm known per se.
  • the outlet cross section is 6 changeable, and the iris is on preferred means, regardless of the particular or selected mill speed, which ensures optimal working of the Mill is designed to ensure the peripheral speed of the To be able to determine fine goods so that taking into account the formula given at the beginning is an optimal one Degree of separation of the classifier is possible.
  • the sifter mill is the same Fig. 2.
  • the mill is again essentially from the Rotor 1 with the mill disk 2a and the attached Striking tools 2 formed while the classifier or the classifier wheel essentially by a telescopically adjustable length Cylinder 14 with bottom 15, cylinder wall 16, outlet-side, adjustable cover plate 17 and the Classifying blades 4 is marked.
  • One part 14a of the cylinder 14 with the bottom 15, the one with the disc 2a is connected, and the inner cylinder wall portion 16a carries at the free end of the cylinder wall section 16a the blades 4 of the visible blade ring.
  • the other part 14b of the cylinder 14 with the cover plate 17 and the outer Cylinder wall section 16b engages with the free end of the outer cylinder wall portion 16b telescopically towards the double arrow 19 continuously adjustable over the inner Cylinder wall section 16a and delimited with the cover plate 17 the viewing chamber 20 between this cover plate 17 Housing wall 13 'with the one arranged centrally to the classifying wheel Fines outlet 6 and the free, i.e. not from the outside Cylinder wall portion 16b covered portions the blades 4.
  • the cover plate 17 as part of the other part 14b of the cylinder 14 is the clear height H of the viewing chamber 20 changeable.
  • the shovels 4 should not the adjustment movements of the cover plate 17 obstructing, but as fluid-tight as possible through slots in the cover plate 17 be passed between the Parts 16a, 16b have an abrasion-resistant sliding seal.
  • the parts 16a, 16b thus form a surrounding of the blades Ring screen with two telescopically adjustable against each other Ring aperture sections.
  • the cover disk 17 of the cylinder part 14b has a hub 21 with which the cylinder part 14b on a shaft 22 is rotatably arranged.
  • the telescopic adjustability of the cylinder part 14b and thus the cover plate 17 thereby causing this shaft 22 to rotate with the output shaft 23 of the motor 12 is connected to this output shaft 23 opposite but is axially displaceable by both waves, for example, by a known one Keyway coupling 24 are interconnected.
  • One of the is a hollow shaft with longitudinal grooves in the two shafts Inner wall or longitudinal ribs on the inner wall, the other of the two shafts as a solid shaft with corresponding longitudinal wedges on the outer wall or longitudinal grooves in the outer wall educated.
  • the axial displacement of the solid shaft trained shaft opposite to that as the hollow shaft trained engine output shaft is by the double arrow 19th characterized.
  • the engine output shaft may seem immediate the shaft led out of the motor 12 can be via a gearbox with the engine output shaft or them can by other suitable and known means, for example a belt drive with the led out of the engine Wave connected.
  • 25 is a sliding guide between two shafts 22,23 in their smooth sections.
  • the driving force from the motor 12 becomes one in this case via the motor output shaft 23 into the rotor 1, in the Cylinder or the ring diaphragm 14 formed by it, in the classifier wheel blades 4 and introduced into the cover plate 17 and once via the shaft 22 directly into the Cover plate 17.
  • the keyway coupling 24 in favor of another sliding guide (accordingly 25) to be omitted, so that the shaft 22 of the via the cover disk 17 driven by the shaft 23 is driven, namely when the connection between Hub 21 and shaft 22 is non-rotatable or when on the keyway clutch 24 in favor of another guide bearing (corresponding to the sliding guide collar 25) and on the torsional strength of the connection between the hub 21 and Wave 22 is dispensed with, the wave is exclusive axially adjustable, in this case is only for that to ensure that with axial displacements of the shaft 22 in the directions of the double arrow 19 this shaft 22 the Takes cover plate 17.
  • iris diaphragm in the cover disk 7 in the embodiment according to FIG. 1 by a known one Acting assembly is such an aperture in sub-figure 1a shown schematically, on a larger scale and towards those leaving the sifter, with fines seen laden air flow. It is a matter of a pinhole with variable hole cross section, wherein this change in cross-section of hole 100 thereby it is possible that between about 6 and about 30 sickle-shaped Lamella sheets 101 with their one inner ends 102 Parts of the circumference of the hole 100 are and at their other Ends associated with a continuously adjustable adjusting ring 103 are rotatable in the direction of the double arrow 104 is mounted in the actual cover plate 7.
  • the lamella plates 101 can be pivoted so that the cross section of the hole 100 is larger or smaller and corresponding to the outlet cross section the fine material outlet 6 is changed.
  • the twisting of the adjusting ring 103 takes place from the outside known means, for example by an actuator or a simple, manually operated linkage.
  • FIG. 1, 2 denotes a guide ring, which interacts with the guide vanes 8.
  • the above Visible air entering the sight air inlet 11 enters the annular space between the guide ring 5 and the housing wall in the guide vane ring 8 and is there in a corresponding Deflected counterflow between guide ring 5 and classifier wheel, around with the sighted goods introduced via the sighted goods inlet 10 from the outside into the flow channels between the blades of the classifier wheel, where the separation into fine and Coarse goods are made.
  • the structural one is at the top Assignment of the cover disk 7 enclosing the screen placed under the classifier wheel. It should be pointed out be that this cover plate 7 with the adjustable Aperture also separated from the classifier wheel and the housing 13, in particular the cover 9 can be assigned.
  • This Solution can be useful because the cover plate 7 with the cover compared to simpler cover plates can have a higher weight for which no additional Driving power is required when the cover washer is separated from the classifier wheel and assigned to the housing.
  • the invention can be defined in this regard that two preferred solutions to the problem are shown like an air classifier in operating phases constant speed of the classifier wheel the separation limit of the prepareers can be changed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Centrifugal Separators (AREA)
  • Crushing And Pulverization Processes (AREA)
EP96930138A 1995-09-04 1996-08-30 Windsichter und einrotorige sichtermühle mit einem solchen windsichter Expired - Lifetime EP0850110B1 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19532555 1995-09-04
DE19532555 1995-09-04
DE19535524 1995-09-25
DE19535524A DE19535524A1 (de) 1995-09-04 1995-09-25 Windsichter und einrotorige Sichtermühle mit einem solchen Windsichter
PCT/EP1996/003815 WO1997009130A1 (de) 1995-09-04 1996-08-30 Windsichter und einrotorige sichtermühle mit einem solchen windsichter

Publications (2)

Publication Number Publication Date
EP0850110A1 EP0850110A1 (de) 1998-07-01
EP0850110B1 true EP0850110B1 (de) 2002-04-17

Family

ID=26018269

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96930138A Expired - Lifetime EP0850110B1 (de) 1995-09-04 1996-08-30 Windsichter und einrotorige sichtermühle mit einem solchen windsichter

Country Status (6)

Country Link
US (1) US5899396A (zh)
EP (1) EP0850110B1 (zh)
JP (1) JPH11512024A (zh)
CN (1) CN1071601C (zh)
BR (1) BR9610389A (zh)
WO (1) WO1997009130A1 (zh)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6776291B1 (en) 2000-09-27 2004-08-17 Xerox Corporation Article and apparatus for particulate size separation
DE102006017472A1 (de) * 2006-04-13 2007-10-18 Nied, Roland, Dr. Ing. Verfahren zur Erzeugung feinster Partikel mittels einer Strahlmühle
JP4516054B2 (ja) * 2006-07-06 2010-08-04 仁 鴻 張 粉砕機
CN103998136B (zh) * 2011-12-16 2016-04-06 拉法基公司 研磨方法和单元和相应的水硬性粘合剂的制备方法
CN104226440B (zh) * 2013-06-08 2016-08-31 江苏密友粉体新装备制造有限公司 高效节能气流粉碎机
CN107116029B (zh) * 2017-05-15 2019-02-01 重庆电子工程职业学院 一种自动涡轮分选机
CN108479957B (zh) * 2018-04-19 2023-11-17 黄河科技学院 化学实验用粉煤灰分层粉碎装置

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2367906A (en) * 1942-01-09 1945-01-23 Wall Apparatus for separating wood flour
US3015392A (en) * 1959-08-14 1962-01-02 Microcyclomat Co Vertical feed centripetal classifier
GB927876A (en) * 1960-10-21 1963-06-06 Ass Portland Cement Improved mechanical air classifier
CH425684A (de) * 1965-09-13 1966-12-15 Escher Wyss Ag Streusichter, insbesondere für Zement
US4296864A (en) * 1979-07-17 1981-10-27 Onoda Cement Co., Ltd. Air classifier
SU994056A1 (ru) * 1981-05-06 1983-02-07 Ивановский Ордена "Знак Почета" Энергетический Институт Им.В.И.Ленина Центробежный сепаратор
GB2163070A (en) * 1984-08-13 1986-02-19 Smidth & Co As F L Separator for sorting particulate material
GB2176134A (en) * 1985-06-03 1986-12-17 Smidth & Co As F L Separator for sorting particulate material
DE3808023A1 (de) * 1988-03-10 1989-09-21 Krupp Polysius Ag Sichter
ATE109690T1 (de) * 1988-11-17 1994-08-15 Nied Roland Windsichter.
DE4101343C1 (zh) * 1991-01-18 1992-01-02 Pallmann Maschinenfabrik Gmbh & Co Kg, 6660 Zweibruecken, De
DE4423815C2 (de) * 1994-07-06 1996-09-26 Loesche Gmbh Mühlensichter

Also Published As

Publication number Publication date
CN1195303A (zh) 1998-10-07
BR9610389A (pt) 1999-08-31
WO1997009130A1 (de) 1997-03-13
CN1071601C (zh) 2001-09-26
JPH11512024A (ja) 1999-10-19
EP0850110A1 (de) 1998-07-01
US5899396A (en) 1999-05-04

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