DE867639C - Device for regulating the grinding fineness in pulverized coal mills - Google Patents

Device for regulating the grinding fineness in pulverized coal mills

Info

Publication number
DE867639C
DE867639C DESt935D DEST000935D DE867639C DE 867639 C DE867639 C DE 867639C DE ST000935 D DEST000935 D DE ST000935D DE 867639 C DE867639 C DE 867639C
Authority
DE
Germany
Prior art keywords
regulating
shaft
pulverized coal
mill
grinding fineness
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
Application number
DESt935D
Other languages
German (de)
Inventor
Paul Beckschulte
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.)
Nippon Steel Engineering Co Ltd
Original Assignee
L&C Steinmueller GmbH
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 L&C Steinmueller GmbH filed Critical L&C Steinmueller GmbH
Priority to DESt935D priority Critical patent/DE867639C/en
Application granted granted Critical
Publication of DE867639C publication Critical patent/DE867639C/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/13Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft and combined with sifting devices, e.g. for making powdered fuel

Description

  • Die Erfindung betrifft eine Einrichtung zum Regeln. der Mahlfeinheit bei Kohlenstaubmühlen. Die Erfindung besteht -darin, daß am unteren Ende *des zum Sichter aufsteigenden Kanals ein verschiebbares Ablenkblech angeordnet ist; durch dessen Stellung zum Schlägerkreis .der Mühle eine mehr oder weniger große Menge des Kohlenstaubes durch den Sichter geführt wird, während der Rest direkt zur Brenneröffnung geht.The invention relates to a device for regulating. the fineness of the grind at pulverized coal mills. The invention consists -in that at the lower end * of the to Sifter ascending channel a sliding baffle is arranged; by its position in relation to the club circle. of the mill a more or less large amount of the coal dust is passed through the classifier, while the rest of the coal is fed straight to the burner opening goes.
  • In.derZeichnung ist die Erfindung im senkrechten Schnitt einer Mühle mit Sichter dargestellt. Durch den Fallschacht i fällt die Kohle in die Mühle 2, wobei ihr durch die Leitung 3 die nötige Heißluft zwecks Trocknung zugeführt wird. Von der Mühle aus -geht ein Schacht ¢ zu einem Sichter 5 beliebiger Bauart, von welchem-aus der Kohlenstaub durch die Leitung 6 zum Brenner geht. Außerdem befindet sich, in .der Umndrehungsrichtung der Mühle gesehen, direkt hinter dem Schacht q. ein aufsteigender Schacht 7, durch welchen der Kohlenstaub direkt zur Leitung 6 ,gelangt. Zwischen Odem Schacht q. und dem Schacht 7 ist-am: unteren Ende ein Schieber 8 vorgesehen, welcher in Richtung auf den Schlägerkranz der Mühle 2 verschoben werden kann. Außerdem ist im Schacht 7 eine Regelklappe 9 angeordnet. Soll mit Sicherheit verhindert werden, .daß das zerschlagene Gut durch den Kanal 7 in die Leitung 6 gelängt, so wind dieser Kanal durch die Klappe 9 so weit abgeschlossen, daß nur das im Sichter 5 ausgeschiedene Gut durch den verbleibenden Spalt in die Mühle zurückfallen kann.In the drawing is the invention in the vertical section of a mill shown with sifter. The coal falls through the chute i into the mill 2, where it is supplied through the line 3, the necessary hot air for the purpose of drying. A shaft ¢ leads from the mill to a classifier 5 of any type which-from the coal dust goes through line 6 to the burner. Also located seen in the direction of rotation of the mill, directly behind the shaft q. an ascending shaft 7 through which the coal dust goes directly to the line 6 , got. Between breath shaft q. and the shaft 7 is-at: the lower end a slide 8 is provided, which can be moved in the direction of the racket of the mill 2 can. In addition, a control flap 9 is arranged in the shaft 7. Should for sure prevented .that the broken material through the channel 7 into the line 6 lengthened, this channel winds through the flap 9 so far that only the separated in the classifier 5 fall back through the remaining gap in the mill can.
  • Wird der Schieber 8 bis dicht auf den Schlägerkreis herabgezogen, so wird das gesamte von der Mühle zerschlagene Gut .durch den Schacht 4 nach oben befördert, gelangt in .den Sichter 5, in welchem das grobe Gut ausgesondert wird und durch den Schacht 7 in die Mühle zurückfällt, während das feine Gut durch .die Leitung 6 zum Brenner gelangt. Je mehr der Schieber 8 von dem Schlägerkreis entfernt wird, also nach oben gezogen wird, um so mehr zerschlagene Kohle wird durch den Schacht 7 direkt in die Leitung befördert, während nur das durch den Schacht q. nach oben gelangende Gut gesichtet wird.If the slide 8 is pulled down close to the club circle, in this way, all of the material crushed by the mill is transported up through the shaft 4 conveyed, arrives in .den sifter 5, in which the coarse material is separated and falls back through the shaft 7 into the mill, while the fine goods through .die Line 6 reaches the burner. The more the slide 8 is removed from the club circle is, so is pulled up, the more crushed coal is through the Shaft 7 conveyed directly into the line, while only that through the shaft q. Good that reaches the top is sighted.
  • Durch die Regelung der Teilströme, welche durch den Kanal q. und durch,den Kanal 7 gehen, kann in sehr einfacher Weise die Feinheit des in die Leitung 6 gelangenden Kohlenstaubes geregelt werden.By regulating the partial flows which flow through the channel q. and through, the Channel 7 go, the fineness of the line 6 can go in a very simple manner Coal dust can be regulated.

Claims (1)

  1. PATENTANSPRÜCHE: i. Einrichtung zum Regeln der Mahlfeinheit bei Kohlenstaubmühlen,dadurch gekennzeichnet, daß an der Austragseite der Mühle zwei Austragschächte (d. und 7) än der Umlaufrichtung der Mühle hintereinander angeordnet sind, zwischen denen an der Eintrittsseite des Kohlenstaubes ein Schieber (8) angeordnet ist, durch welchen die Menge Lies den beiden Schächten zugeleiteten Kohlenstaubes geregelt wird, wobei der Kohlenstaub durch den Schacht (4.) über .einen Sichten (5) in die Abführungsleitung (6) des Kohlenstaubes gelangt, während der Kohlenstaub .durch den Schacht (7) :direkt zur Leitung (6) geführt wird. ä. Einrichtung nach Anspruch i, dadurch gekennzeichnet, daß in dem Schacht (7) eine Regelklappe (g) vorgesehen ist. PATENT CLAIMS: i. Device for regulating the grinding fineness in pulverized coal mills, characterized in that two discharge shafts (d. And 7) are arranged one behind the other in the direction of rotation of the mill, between which a slide (8) is arranged on the inlet side of the pulverized coal which the amount of coal dust fed to the two shafts is regulated, whereby the coal dust passes through the shaft (4.) via. is led directly to the line (6). Ä. Device according to claim i, characterized in that a regulating flap (g) is provided in the shaft (7).
DESt935D 1943-08-14 1943-08-14 Device for regulating the grinding fineness in pulverized coal mills Expired DE867639C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DESt935D DE867639C (en) 1943-08-14 1943-08-14 Device for regulating the grinding fineness in pulverized coal mills

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DESt935D DE867639C (en) 1943-08-14 1943-08-14 Device for regulating the grinding fineness in pulverized coal mills

Publications (1)

Publication Number Publication Date
DE867639C true DE867639C (en) 1953-02-19

Family

ID=7452287

Family Applications (1)

Application Number Title Priority Date Filing Date
DESt935D Expired DE867639C (en) 1943-08-14 1943-08-14 Device for regulating the grinding fineness in pulverized coal mills

Country Status (1)

Country Link
DE (1) DE867639C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2931581A (en) * 1955-08-08 1960-04-05 Microcyclomat Co Precision grinder with forced circulation classifier
FR2668397A1 (en) * 1990-10-30 1992-04-30 Kataoka Fukutaro FLUIDIZED GRINDER / DRYER FOR USE IN A FLUIDIZED GRINDING / DRYING DEVICE.
DE4128373A1 (en) * 1991-08-27 1993-03-04 Rudi Goldau METHOD AND DEVICE FOR CRUSHING GOODS

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2931581A (en) * 1955-08-08 1960-04-05 Microcyclomat Co Precision grinder with forced circulation classifier
FR2668397A1 (en) * 1990-10-30 1992-04-30 Kataoka Fukutaro FLUIDIZED GRINDER / DRYER FOR USE IN A FLUIDIZED GRINDING / DRYING DEVICE.
DE4128373A1 (en) * 1991-08-27 1993-03-04 Rudi Goldau METHOD AND DEVICE FOR CRUSHING GOODS

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