EP0945181B1 - Schlagleiste für Prallmühlenrotoren und Rotor für Prallmühlen - Google Patents
Schlagleiste für Prallmühlenrotoren und Rotor für Prallmühlen Download PDFInfo
- Publication number
- EP0945181B1 EP0945181B1 EP99104665A EP99104665A EP0945181B1 EP 0945181 B1 EP0945181 B1 EP 0945181B1 EP 99104665 A EP99104665 A EP 99104665A EP 99104665 A EP99104665 A EP 99104665A EP 0945181 B1 EP0945181 B1 EP 0945181B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor
- blow bar
- blow
- bar
- axis
- 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
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/26—Details
- B02C13/28—Shape or construction of beater elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/26—Details
- B02C13/28—Shape or construction of beater elements
- B02C13/2804—Shape or construction of beater elements the beater elements being rigidly connected to the rotor
Definitions
- the invention relates to a blow bar for impact mill rotors for the purpose of reversibility mirror-symmetrical, elongated cross-section, which on the rear side in the direction of rotation of the rotor has surfaces with which they to the rear and radially from the inside against fixed parts provided on the rotor and on the front side contact surfaces for movable holding parts, the blow bar hold with the holding parts provided on the rotor and in accordance with claim 7 a rotor for impact mills, which consists of several rotor disks that pass through in all Rotor disks interrupted in alignment with one another are interrupted are, the edge recesses starting from the outer circumference of the rotor are inclined inwards against the direction of rotation of the rotor with blow bars.
- Such reversible but not reversible blow bars are in different Embodiments known. They are particularly suitable for impact mill rotors that are made of there are several disks attached to one axis, the circumference with Edge recesses are provided, in which the blow bars are inserted. Because at These rotors are also the blow bars between the discs on the inner Halves of their fronts exposed to wear, so that these surfaces are not considered Contact surfaces on the back can be used. When turning, i. H. at the Swiveling around a central transverse axis, the rear remains behind and the front front, only that the inner half is then outside and vice versa.
- the front contact surfaces of the blow bars are through in the area of the pane width the holding parts that fix them or through the leading ones arranged further outside Rotor disc parts, which form the blow bar holder, sufficiently against Wear protected.
- blow bar is known for example from DE 26 06 000 A1. She has, like many other known blow bars, an elongated cross section of constant width, but their cross-section points towards other blow bars a shape that is kinked backwards, aligning itself with that of the axis of symmetry nearby rear surfaces diagonally from the inside against appropriately trained Rotor disc parts created.
- the blow bar is held in engagement with these parts by wedges on the front, on the front and in the middle Contact surfaces of the blow bar provided perpendicular to the axis of symmetry act.
- the Contact surfaces for the wedges in the rotor disks on the front are in essentially radially aligned.
- the cross section of the known blow bar has a constant width and is conditional thereby also a wide outer surface that is essentially exposed to fretting.
- the front edge of a blow bar is decisive for good shredding a better effect should be built slightly inclined forward. By a such inclination, however, widens the outer surface even more, which is even more so Friction means wear.
- the ideal blow bar would be as thin as possible, as is approximately the case in DE 28 11 376 A1 is known.
- the blow bar described there is at most 40 mm thick considerable part of their height and is therefore only suitable for sand impact mills, at which the feed grain is only a small size.
- this is known bar designed for a reversing operation, so that its striking edge through Sharpening wear itself. This bar is not suitable for large impact mills, it would break with a correspondingly large feed material.
- the invention has for its object to provide a blow bar with the simplest possible cross-section, but which is relatively thin in the area of the striking edges and still withstands large forces by impact, which has favorable wear curves and thus leads to cost savings in operation, the other task in designing the blow bar and the rotor receiving the blow bar in such a way that, despite the simple cross section of the blow bar and simple design of the rotor, the required number of blow bars in the rotor can be fastened securely and inexpensively.
- the cross section of the blow bar essentially forms a double trapezoidal basic shape with the long base lines as the axis of symmetry, and the back of the blow bar corresponding to the height of each trapezoid at right angles to the axis of symmetry forms a flat surface above the height of the blow bar is aligned forming, and the contact surfaces provided on the rear of the blow bar are formed by a groove-like depression in the longitudinal direction of the blow bar and arranged at the level of the axis of symmetry.
- the bar according to the invention is relatively narrow and therefore has a corresponding low volume, is therefore inexpensive in terms of the need for cast material Production.
- the invention provides in a further embodiment that the axis of symmetry corresponding long baseline trapezoids are approximately twice as long, than the short baselines corresponding to the width of the outer surfaces. It is with Trapezoid or double trapezoid meant the basic shape of the cross section, under Neglect of the groove-like depression. This is also trapezoidal and has flat contact surfaces with which the blow bar against the firmly on Rotor provided holding parts.
- the Invention proposed on the end faces and from the back of the blow bar starting widening the groove-like depression with recesses for receiving to provide axially acting locking elements.
- Blow bar can be seen by turning each blow bar around its longitudinal axis in the circumferential direction of the
- the rotor is installed inclined in such a way that the outward-pointing sloping leg of the corresponding trapezes as an obelisk forming a face in relation to a through the rotor axis going to the outermost, with the rotating rotor the impact circle forming edge of the blow bar aligned cutting plane, and thus this outermost edge leads the other parts of the blow bar.
- a rotor which consists of a plurality of rotor disks, which are formed by in all rotor disks aligned with each other, are interrupted, with blow bars according to the invention, the edge recesses, as known from EP - 0666 111 A1, starting from the outer circumference of the rotor are inclined inward against the direction of rotation of the rotor.
- the related The object is achieved in that the edge recesses are fixed on the rotor provided holding parts are formed an abutment for the blow bars, so that each blow bar is inclined about its longitudinal axis in the direction of rotation of the rotor is installed in such a way that the outward-pointing oblique leg of the corresponding Trapezes as obelisk on the front forming a face in relation to one through the rotor axis to the outermost, with the rotating rotor the impact circle forming edge of the blow bars aligned cutting plane, and thus this outermost edge is leading the other parts of the blow bars.
- the movable holding parts between the front of the blow bars and the Support surfaces are provided on the rotor disks, hold the blow bars diagonally from the front and inside with the support provided on the rotor prism-shaped holding parts in engagement.
- a disadvantage of the rotor according to EP - 0 666 111 A1 is that the rear abutment, which overlaps each edge recess, is formed from loose holding parts with small ones Contact surfaces so that a secure mounting is not guaranteed.
- blow bar 1 has a mirror-symmetrical, elongated Cross section of a double trapezoidal basic shape according to the addition by dash-dotted lines.
- the long base lines a of each trapezoid correspond the axis of symmetry 2
- the short baselines correspond to the width of the outer surfaces Third
- the striking edges 4 are somewhat rounded and sloping towards the rear.
- the the back 5 of the blow bar 1 is corresponding height h of each trapeze aligned perpendicular to the axis of symmetry and thus forms a flat surface 6 over the Blow bar height 7.
- On the back 5 is at the level of the axis of symmetry Trapezoidal recess 8 is provided, the sides of which are flat contact surfaces 9 are formed, with which the blow bar against fixedly provided on the rotor holding parts 10 creates (Fig. 2).
- the front 11 of the blow bar has two striking surfaces 12, formed by the outward sloping legs of the trapezoids (as an obelisk) are.
- the groove-like depression 8 has the depression on both end faces 13 widening recesses 14 into which, as shown in FIG. 2, axially acting Interlocking elements 15 engage in pockets of the fixed holding parts 10 are slidably included.
- the blow bar elongated cross-section is, as shown in FIG. 2, inclined obliquely in the Installed rotor, which consists of several rotor disks 16.
- the discs show several edge recesses 17 for receiving a blow bar each.
- This Edge recesses are in the circumferential direction in front of the blow bar with another, for example Right-angled recess 18 for receiving a movable holding part 19 provided, which the blow bar with the fixed to the rotor holding parts 10 in Engagement holds.
- a rotor is shown in front view, but for reasons of simplification only equipped with a blow bar 1.
- the rotor axis around which the rotor corresponds accordingly Arrow 20 rotates, is marked with x.
- the one shown installed in the figure above Beating bar describes with its outer edge 4 a beating circle 21. From this edge a cutting plane 22 is guided to the rotor axis x.
- the blow bar is like this Figure clearly shows, installed inclined to the sectional plane 22 such that the striking edge 4th is leading to the face 12.
- the rotor consists of several Rotor disks 16 which are welded together at their hubs 23.
- the blow bar according to the invention is simple in its training and due to its slim form becomes relatively little of the expensive itself Wear material needed. Installation and removal are straightforward, too Reduction of maintenance costs helps.
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Pulverization Processes (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Stroboscope Apparatuses (AREA)
- Induction Machinery (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Crushing And Grinding (AREA)
Description
Gelöst wird diese Aufgabe für die gattungsgemäße Schlagleiste erfindungsgemäß dadurch, daß der Querschnitt der Schlagleiste im wesentlichen eine doppeltrapezförmige Grundform bildet mit den langen Grundlinien als Symmetrieachse, und dabei die der Höhe eines jeden Trapezes entsprechende Rückseite der Schlagleiste rechtwinklig zur Symmetrieachse eine ebene Fläche über die Schlagleistenhöhe bildend ausgerichtet ist, und die auf der Rückseite der Schlagleiste vorgesehenen Anlageflächen von einer nutartigen Vertiefung in Längsrichtung der Schlagleiste verlaufend und in Höhe der Symmetrieachse angeordnet gebildet sind.
- Fig. 1
- eine erfindungsgemäße Schlagleiste in Stirnansicht,
- Fig. 2
- eine gemäß der Erfindung in den Rotor eingebaute Schlagleiste, dargestellt in einem Ausschnitt des Rotors,
- Fig. 3
- einen Rotor gemäß der Erfindung mit eingebauter Schlagleiste in Stirnansicht.
Claims (8)
- Schlagleiste 1 eines Prallmühlenrotors mit zum Zwecke der Umwendbarkeit spiegelsymmetrischem, länglichem Querschnitt, die auf der in Umlaufrichtung (20) des Rotors hinteren Seite Flächen (6,9) aufweist, mit denen sie sich nach hinten und radial von innen her gegen fest am Rotor vorgesehene Halteteile (10) anlegt und auf der vorderen Seite Anlageflächen (12) für bewegliche Halteteile (19), die die Schlagleiste mit den fest am Rotor vorgesehenen Halteteilen (10) in Eingriff halten, dadurch gekennzeichnet, daß der Querschnitt der Schlagleiste (1) im wesentlichen eine doppeltrapezförmige Grundform bildet mit den langen Grundlinien (a) als Symmetrieachse (2), und dabei die der Höhe (h) eines jeden Trapezes entsprechende Rückseite (5) der Schlagleiste (1) rechtwinklig zur Symmetrieachse eine ebene Fläche (6) über die Schlagleistenhöhe (7) bildend ausgerichtet ist, und die auf der Rückseite (5) der Schlagleiste (1) vorgesehenen Anlageflächen (9) von einer nutartigen Vertiefung (8) in Längsrichtung der Schlagleiste verlaufend und in Höhe der Symmetrieachse angeordnet gebildet sind.
- Schlagleiste nach Anspruch 1, dadurch gekennzeichnet, daß die der Symmetrieachse (2) entsprechenden langen Grundlinien der Trapeze in etwa doppelt so lang ausgebildet sind, als die kurzen, der Breite der Außenflächen (3) entsprechenden Grundlinien.
- Schlagleiste nach Anspruch 1, dadurch gekennzeichnet, daß die nutartigen Vertiefungen (8) im Querschnitt trapezförmig ausgebildet sind und plane Anlageflächen (9) für die fest am Rotor vorgesehen Halteteile (10) aufweisen.
- Schlagleiste nach Anspruch 1, dadurch gekennzeichnet, daß an den Stirnseiten (13) und von der Rückseite (5) der Schlagleiste ausgehend die nutartige Vertiefung (8) verbreiternd Ausnehmungen (14) zu Aufnahme von axial wirkenden Verriegelungselementen (15) vorgesehen sind.
- Schlagleiste nach Anspruch 1, dadurch gekennzeichnet, daß die Anlageflächen für die beweglichen Halteteile (19) auf der Vorderseite (11) der Schlagleiste (1) durch die schrägen Flächen des Doppeltrapezes selbst gebildet sind.
- Verwendung von Schlagleisten nach Anspruch 1, dadurch gekennzeichnet, daß jede Schlagleiste (1) um ihre Längsachse in Umlaufrichtung des Rotors geneigt eingebaut ist derart, daß der nach außen weisende schräge Schenkel des entsprechenden Trapezes als Obelisk eine Schlagfläche (12) bildend in Bezug auf eine durch die Rotorachse (x) gehende, auf die äußerste, beim drehenden Rotor den Schlagkreis (21) bildende Kante (4) der Schlagleiste ausgerichtete Schnittebene (22) vorgeneigt ist, und damit diese äußerste Kante gegenüber den übrigen Teilen der Schlagleiste voreilend ist.
- Rotor für Prallmühlen, der aus mehreren Rotorscheiben (16) besteht, die durch in allen Rotorscheiben zueinander fluchtend angeordneten Randausnehmungen (17, 18) unterbrochen sind, wobei die Randausnehmungen vom äußeren Umfang des Rotors ausgehend entgegen der Drehrichtung des Rotors nach innen geneigt sind mit Schlagleisten nach Anspruch 1, dadurch gekennzeichnet, daß die Randausnehmungen (17, 18) von den fest am Rotor vorgesehenen Halteteilen (10) ein Widerlager für die Schlagleisten (1) bildend übergriffen sind, so daß jede Schlagleiste (1) um ihre Längsachse in Umlaufrichtung (20) des Rotors geneigt eingebaut ist derart, daß der nach außen weisende schräge Schenkel des entsprechenden Trapezes als Obelisk auf der Vorderseite (11) eine Schlagfläche (12) bildend in Bezug auf eine durch die Rotorachse (x) gehende, auf die äußerste, beim drehenden Rotor den Schlagkreis (21) bildende Kante (4) der Schlagleiste ausgerichtete Schnittebene (22) vorgeneigt ist, und damit diese äußerste Kante gegenüber den übrigen Teilen der Schlagleiste voreilend ist.
- Rotor nach Anspruch 7, dadurch gekennzeichnet, daß die am Rotor fest vorgesehenen Halteteile (10) prismenartig ausgebildet ebene Flächen aufweisen, als komplementäre Elemente zu den nutartigen Vertiefungen (8) in den Schlagleisten (1).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19813308 | 1998-03-26 | ||
DE19813308A DE19813308C2 (de) | 1998-03-26 | 1998-03-26 | Schlagleiste für Prallmühlenrotoren und Rotor für Prallmühlen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0945181A1 EP0945181A1 (de) | 1999-09-29 |
EP0945181B1 true EP0945181B1 (de) | 2003-05-07 |
Family
ID=7862386
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99104665A Expired - Lifetime EP0945181B1 (de) | 1998-03-26 | 1999-03-09 | Schlagleiste für Prallmühlenrotoren und Rotor für Prallmühlen |
Country Status (12)
Country | Link |
---|---|
US (1) | US6129300A (de) |
EP (1) | EP0945181B1 (de) |
JP (1) | JPH11319598A (de) |
KR (1) | KR19990078183A (de) |
AT (1) | ATE239551T1 (de) |
AU (1) | AU753127B2 (de) |
BR (1) | BR9901031A (de) |
CA (1) | CA2265074A1 (de) |
DE (2) | DE19813308C2 (de) |
DK (1) | DK0945181T3 (de) |
ES (1) | ES2196664T3 (de) |
ZA (1) | ZA991970B (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19813310C1 (de) * | 1998-03-26 | 1999-10-28 | Noell Serv & Maschtechn Gmbh | Rotor für Prallmühlen |
US6318148B1 (en) * | 2000-08-02 | 2001-11-20 | Dietrick E. Alkonis | Tester for impact performance |
DE10048699C1 (de) * | 2000-09-30 | 2002-01-31 | Hazemag & Epr Gmbh | Einseitig beaufschlagbare Schlagleiste für Prallmühlenrotoren |
DE20314137U1 (de) * | 2003-09-10 | 2003-11-27 | Schenk, Jürgen | Vorrichtung zum Aufbereiten von Aushub |
DE102005052191A1 (de) * | 2005-10-28 | 2007-05-03 | Knecht Maschinenbau Gmbh | Fleischkutter |
CA2631999C (en) | 2005-12-08 | 2014-02-25 | Swissrtec Gmbh | Rotor for an impact crusher |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE930839C (de) * | 1951-10-11 | 1955-07-25 | Westfalia Dinnendahl Groeppel | Rotor fuer Schleudermuehlen |
DE1745885U (de) * | 1957-03-07 | 1957-05-29 | Miag Muehlenbau & Ind Gmbh | Schlagleiste fuer prallbrecher. |
DE2606000A1 (de) * | 1976-02-14 | 1977-08-25 | Hazemag Andreas Kg | Schlagleiste fuer prallmuehlenrotoren |
DE2811376C3 (de) * | 1978-03-16 | 1980-09-25 | Hazemag Dr. E. Andreas Gmbh & Co, 4400 Muenster | Rotor für Prallmühlen, insbesondere für Sandprallmühlen |
DE3244193C2 (de) * | 1982-11-30 | 1986-09-11 | Karl 8901 Königsbrunn Egger | Prallmühle |
DE3525442C2 (de) * | 1985-07-17 | 1994-10-20 | Hermann Schroedl | Schlagleiste für einen Prallbrecherrotor |
US5004169A (en) * | 1989-11-22 | 1991-04-02 | Cedarapids, Inc. | Impeller bar assembly with adjustable locking mechanism |
US5042733A (en) * | 1990-08-06 | 1991-08-27 | Hans Hench | Rotary cutter, particularly for granulating plastic material |
US5381973A (en) * | 1992-08-26 | 1995-01-17 | Noell Service Und Maschinentechnik Gmbh | Rotor for impact crushes or hammer mills |
US5320292A (en) * | 1992-11-06 | 1994-06-14 | Smith Roger G | Mounting for replaceable hammers in impact crusher |
DE9422120U1 (de) * | 1993-08-26 | 1998-04-30 | Böhringer, Paul, 74229 Oedheim | Prallbrecher mit Schlagleisten |
BE1008041A3 (fr) * | 1994-02-04 | 1996-01-03 | Magotteaux Int | Rotor pour concasseur a percussion. |
-
1998
- 1998-03-26 DE DE19813308A patent/DE19813308C2/de not_active Expired - Fee Related
-
1999
- 1999-03-09 EP EP99104665A patent/EP0945181B1/de not_active Expired - Lifetime
- 1999-03-09 ES ES99104665T patent/ES2196664T3/es not_active Expired - Lifetime
- 1999-03-09 AT AT99104665T patent/ATE239551T1/de not_active IP Right Cessation
- 1999-03-09 CA CA002265074A patent/CA2265074A1/en not_active Abandoned
- 1999-03-09 DK DK99104665T patent/DK0945181T3/da active
- 1999-03-09 DE DE59905393T patent/DE59905393D1/de not_active Expired - Lifetime
- 1999-03-11 ZA ZA9901970A patent/ZA991970B/xx unknown
- 1999-03-18 US US09/271,761 patent/US6129300A/en not_active Expired - Fee Related
- 1999-03-24 KR KR1019990009979A patent/KR19990078183A/ko not_active Application Discontinuation
- 1999-03-25 BR BR9901031-3A patent/BR9901031A/pt not_active IP Right Cessation
- 1999-03-25 AU AU21413/99A patent/AU753127B2/en not_active Ceased
- 1999-03-25 JP JP11081839A patent/JPH11319598A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
DE19813308A1 (de) | 1999-10-07 |
ATE239551T1 (de) | 2003-05-15 |
JPH11319598A (ja) | 1999-11-24 |
CA2265074A1 (en) | 1999-09-26 |
BR9901031A (pt) | 2000-03-08 |
DK0945181T3 (da) | 2003-09-01 |
ZA991970B (en) | 1999-09-27 |
ES2196664T3 (es) | 2003-12-16 |
US6129300A (en) | 2000-10-10 |
AU753127B2 (en) | 2002-10-10 |
DE19813308C2 (de) | 2002-02-28 |
AU2141399A (en) | 1999-10-07 |
DE59905393D1 (de) | 2003-06-12 |
KR19990078183A (ko) | 1999-10-25 |
EP0945181A1 (de) | 1999-09-29 |
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