WO2011047668A1 - Press molds for roller presses - Google Patents

Press molds for roller presses Download PDF

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Publication number
WO2011047668A1
WO2011047668A1 PCT/DE2010/001233 DE2010001233W WO2011047668A1 WO 2011047668 A1 WO2011047668 A1 WO 2011047668A1 DE 2010001233 W DE2010001233 W DE 2010001233W WO 2011047668 A1 WO2011047668 A1 WO 2011047668A1
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WO
WIPO (PCT)
Prior art keywords
press
mold cavities
row
center line
molds
Prior art date
Application number
PCT/DE2010/001233
Other languages
German (de)
French (fr)
Other versions
WO2011047668A4 (en
Inventor
Klaus Kalettka
Angela Böhme
Rudolf Steidl
Original Assignee
Zemag Maschinenbau 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 Zemag Maschinenbau Gmbh filed Critical Zemag Maschinenbau Gmbh
Priority to DE112010004136T priority Critical patent/DE112010004136A5/en
Publication of WO2011047668A1 publication Critical patent/WO2011047668A1/en
Publication of WO2011047668A4 publication Critical patent/WO2011047668A4/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/16—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using pocketed rollers, e.g. two co-operating pocketed rollers
    • B30B11/165—Roll constructions

Definitions

  • the invention relates to the press molds of roller presses, which are used in particular for the compression of bulk loose material to briquettes.
  • the object of the invention is essentially characterized by the arrangement and design of the mold cavities in the molds.
  • the topography and arrangement of the mold cavities is extremely diverse and is essentially determined by the desired shape of the compacts.
  • the air contained in the mold cavities and in the bulk material is squeezed out. It escapes largely uncontrolled, but predominantly counter to the conveying direction of the press product. Thus, it comes to a fluidization of the bulk material lying above the nip, whereby its collection is disturbed in the nip. This has the consequence that the compacts produced in their density and strength have widely varying values.
  • the pressing process itself is to a certain extent discontinuous and thus difficult to control.
  • the objective here is that, especially in the pressing of fine-grained bulk solids, a high proportion of finished product and a low proportion of undiluted fine product is produced. Furthermore, the wear of the press molds should decrease.
  • the compression molds are designed such that the air contained in the mold cavities and in the bulk material can escape channelized during the pressing process. This happens on the one hand by the arrangement of the mold cavities on the mold and on the other by their design.
  • each press line has two rows of mold cavities. These are arrow-like offset towards one another in the direction of the center of the press web.
  • the angle between the press line center line and the mold cavities should not be less than 5 °.
  • the profile depth of the mold cavities preferably decreases continuously from the center of the press web to the press web edge and opens partially or completely into the open, for example into a circumferential groove.
  • the air guide during the pressing process designed such that a displacement operation is realized in the mold cavities of the press web center in the direction of the press web edge.
  • the air flows according to the progressive degree of filling of the mold cavities to the press web edge and escapes through the circumferential groove to the outside.
  • the bulk material located above the nip is not influenced by the outflowing air since its direction of action leads away from the nip.
  • FIG. 1 shows the counter-rotating press rolls 1 and 2 forming a press nip 3. Both press rolls 1 and 2 are covered with press molds 4 which form the press webs. In the area of the press webs, mold cavities 5 are introduced into the press molds 4 in such a way that two rows of mold cavities 5 arranged parallel to one another are formed in each case. All mold cavities 5 are arrow-like in
  • the tread depth of the mold troughs 5 decreases continuously from the press line center line 6 as far as the press web edge, with the tread depth of the mold trough 5 opening completely or partially into a circumferential groove 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)

Abstract

The invention relates to press molds of roller presses, which are used in particular to press loose bulk goods into briquettes. The subject matter of the invention is substantially characterized by the arrangement and shape of the mold cavities in the press molds. The mold cavities are arranged parallel to each other in a row-like manner in the area of the press tracks of the press molds, and namely in one row to the right and one row to the left of the press track center line. The mold cavities are arranged in a V in the direction of the press track center line and in the rotational direction of the press rollers. Furthermore, the mold cavities of the one row are offset from those of the other row. The profile depth of the mold cavities decreases from the press track center line to the press track edge, wherein the profile depth of the mold cavity opens into a circumferential groove. Further embodiments are specified in the subclaims.

Description

Beschreibung  description
Pressformzeuge für Walzenpressen Press molds for roller presses
Die Erfindung betrifft die Pressformzeuge von Walzenpressen, die insbesondere für die Verpressung von losem Schüttgut zu Briketts eingesetzt werden. The invention relates to the press molds of roller presses, which are used in particular for the compression of bulk loose material to briquettes.
Der Gegenstand der Erfindung ist im Wesentlichen durch die Anordnung und Gestaltung der Formmulden in den Pressformzeugen gekennzeichnet.  The object of the invention is essentially characterized by the arrangement and design of the mold cavities in the molds.
Stand der Technik State of the art
Bekanntermaßen sind bei Walzenpressen zwei gegenläufig drehende Presswalzen, die mit Pressformzeugen belegt sind, nebeneinander angeordnet. In die Pressformzeuge sind Formmulden eingebracht, in denen das Schüttgut während des Pressvorgangs zu Briketts oder dgl. verdichtet und geformt wird. As is known, in roll presses two counter-rotating press rolls, which are covered with press molds, are arranged side by side. In the compression molds mold cavities are introduced, in which the bulk material during the pressing process to briquettes or the like. Compressed and molded.
Die Topografie und Anordnung der Formmulden ist äußerst vielfältig und wird im Wesentlichen von der gewünschten Form der Presslinge bestimmt. Während der Verdichtung wird die in den Formmulden und im Schüttgut enthaltene Luft ausgepresst. Sie entweicht weitestgehend unkontrolliert, überwiegend aber entgegen der Förderrichtung des Pressprodukts. Somit kommt es zu einer Fluidisierung des über dem Walzenspalt liegenden Schüttguts, wodurch dessen Einzug in den Walzenspalt gestört wird. Das hat zur Folge, dass die erzeugten Presslinge in ihrer Dichte und Festigkeit stark schwankende Werte aufweisen. Der Pressvorgang selbst gestaltet sich in gewissem Grade diskontinuierlich und wird dadurch schwer beherrschbar.  The topography and arrangement of the mold cavities is extremely diverse and is essentially determined by the desired shape of the compacts. During compaction, the air contained in the mold cavities and in the bulk material is squeezed out. It escapes largely uncontrolled, but predominantly counter to the conveying direction of the press product. Thus, it comes to a fluidization of the bulk material lying above the nip, whereby its collection is disturbed in the nip. This has the consequence that the compacts produced in their density and strength have widely varying values. The pressing process itself is to a certain extent discontinuous and thus difficult to control.
Aufgabenstellung task
Die Gründe für die vorgenannten Nachteile werden überwiegend in der Geometrie der Pressformzeuge gesehen, sprich in der Anordnung und Profilierung der Formmulden. Somit sind aufgabenhaft Pressformzeuge für Walzenpressen zu entwickeln, bei denen die während des Verdichtungsvorgangs austretende Luft ohne Fluidisierung des über dem Walzenspalt liegenden Schüttguts entweichen kann. The reasons for the aforementioned disadvantages are mainly seen in the geometry of the press molds, that is, in the arrangement and profiling of the mold cavities. Thus, task molds for roller presses are to be developed, in which the air emerging during the compression process can escape without fluidizing the bulk material lying above the nip.
Die Zielstellung dabei ist, dass speziell bei der Verpressung von feinkörnigen Schüttgütern ein hoher Anteil an Fertigprodukt und ein niedriger Anteil an unverpresstem Feinprodukt entsteht. Weiterhin soll sich der Verschleiß der Pressformzeuge vermindern.  The objective here is that, especially in the pressing of fine-grained bulk solids, a high proportion of finished product and a low proportion of undiluted fine product is produced. Furthermore, the wear of the press molds should decrease.
Schließlich wird die Reduzierung von Schwingungen im Maschinen- und Gebäudesystem angestrebt. Gegenstand der Erfindung Finally, the aim is to reduce vibrations in the machine and building system. Subject of the invention
Die Lösung der Aufgabenstellung ist im Patentanspruch 1 angegeben. Die untergeordneten Ansprüche enthalten zweckmäßige Ausgestaltungen. Erfindungsgemäß sind die Pressformzeuge so ausgebildet, dass die in den Formmulden und im Schüttgut enthaltene Luft während des Pressvorgangs kanalisiert entweichen kann. Das geschieht zum Einen durch die Anordnung der Formmulden auf dem Formzeug und zum Anderen durch deren Gestaltung. The solution of the problem is specified in claim 1. The subordinate claims contain expedient embodiments. According to the invention, the compression molds are designed such that the air contained in the mold cavities and in the bulk material can escape channelized during the pressing process. This happens on the one hand by the arrangement of the mold cavities on the mold and on the other by their design.
Zunächst besitzt jede Pressbahn zwei Reihen Formmulden. Diese sind pfeilartig in Richtung der Pressbahnmitte versetzt zueinander angeordnet. Der Winkel zwischen der Pressbahnmittellinie und den Formmulden sollte nicht kleiner als 5° sein.  First, each press line has two rows of mold cavities. These are arrow-like offset towards one another in the direction of the center of the press web. The angle between the press line center line and the mold cavities should not be less than 5 °.
Weiterhin nimmt die Profiltiefe der Formmulden von der Mitte der Pressbahn aus gesehen bis zum Pressbahnrand vorzugsweise kontinuierlich ab und mündet teilweise oder vollständig ins Freie, beispielsweise in eine umlaufende Nut. Furthermore, the profile depth of the mold cavities preferably decreases continuously from the center of the press web to the press web edge and opens partially or completely into the open, for example into a circumferential groove.
Durch die vorgeschlagenen apparativen Maßnahmen gestaltet sich die Luftführung während des Pressvorgangs derart, dass ein Verdrängungsvorgang in den Formmulden von der Pressbahnmitte in Richtung des Pressbahnrands realisiert ist. Die Luft strömt entsprechend dem fortschreitenden Füllungsgrad der Formmulden zum Pressbahnrand und entweicht über die umlaufende Nut ins Freie. By the proposed apparatus measures, the air guide during the pressing process designed such that a displacement operation is realized in the mold cavities of the press web center in the direction of the press web edge. The air flows according to the progressive degree of filling of the mold cavities to the press web edge and escapes through the circumferential groove to the outside.
Das über dem Walzenspalt liegende Schüttgut wird nicht von der ausströmenden Luft beeinflusst, da deren Wirkungsrichtung vom Walzenspalt wegführt. Somit ist die  The bulk material located above the nip is not influenced by the outflowing air since its direction of action leads away from the nip. Thus, the
Fluidisierung des Schüttguts unmittelbar vor der Verpressung wirksam unterbunden. Ausführungsbeispiel Fluidization of the bulk material effectively prevented immediately before the compression. embodiment
Im nachfolgenden Ausführungsbeispiel wird die Erfindung an Hand einer In the following embodiment, the invention with reference to a
Zweiwalzenpresse für feinkörniges Schuttgut, nämlich Braunkohle, unter Zuhilfenahme einer Zeichnungen näher erläutert. Two-roll press for fine-grained bulk material, namely lignite, explained in more detail with the aid of a drawing.
Figur 1 zeigt die gegenläufig rotierenden einen Pressspalt 3 bildenden Presswalzen 1 und 2. Beide Presswalzen 1 und 2 sind mit Pressformzeugen 4 belegt, die die Pressbahnen bilden. Im Bereich der Pressbahnen sind Formmulden 5 in die Pressformzeuge 4 eingebracht, und zwar in der Weise, dass jeweils zwei Reihen parallel zueinander angeordnete Formmulden 5 gebildet sind. Dabei sind alle Formmulden 5 pfeilartig in FIG. 1 shows the counter-rotating press rolls 1 and 2 forming a press nip 3. Both press rolls 1 and 2 are covered with press molds 4 which form the press webs. In the area of the press webs, mold cavities 5 are introduced into the press molds 4 in such a way that two rows of mold cavities 5 arranged parallel to one another are formed in each case. All mold cavities 5 are arrow-like in
Richtung der Pressbahnmitte in einem Winkel zwischen der Pressbahnmittellinie 6 und den Formmulden 5 von mindestens 5° angeordnet. Außerdem besteht Versatz der Formmulden 5 der einen zu denen der anderen Reihe. Direction of the press web center at an angle between the press line center line 6 and the mold cavities 5 of at least 5 °. In addition, there is offset of the mold cavities 5 of the one to those of the other row.
Die Profiltiefe der Formmulden 5 nimmt von der Pressbahnmittellinie 6 aus gesehen bis zum Pressbahnrand kontinuierlich ab, wobei die Profiltiefe der Formmulde 5 ganz oder teilweise in eine umlaufende Nut 7 mündet. The tread depth of the mold troughs 5 decreases continuously from the press line center line 6 as far as the press web edge, with the tread depth of the mold trough 5 opening completely or partially into a circumferential groove 7.
Bezugszeichenliste LIST OF REFERENCE NUMBERS
Die verwendeten Bezugszeichen bedeuten:The reference symbols used mean:
1 Presswalze, 1 press roll,
2 Presswalze,  2 press roll,
3 Pressspalt,  3 press nip,
4 Pressformzeug,  4 molds,
5 Formmulde,  5 mold cavity,
6 Pressbahnmittellinie,  6 press center line,
7 Nut.  7 groove.

Claims

Patentansprüche claims
1. Pressformzeuge für Walzenpressen, dadurch gekennzeichnet, 1. compression molds for roller presses, characterized
dass im Bereich der Pressbahnen reihenartig parallel zueinander angeordnete that in the region of the pressing webs arranged in rows parallel to each other
Formmulden (5), jeweils eine Reihe rechts und links der Pressbahnmittellinie (6) bildend, in die Pressformzeuge (4) eingebracht sind,  Mold cavities (5), each forming a row to the right and left of the press center line (6), are introduced into the compression molds (4),
dass die Formmulden (5) pfeilartig in Richtung der Pressbahnmittellinie (6) und in Drehrichtung der Presswalzen (1; 2) angeordnet und die Formmulden (5) der einen zu denen der anderen Reihe versetzt sind, that the mold cavities (5) are arranged arrow-like in the direction of the press web center line (6) and in the direction of rotation of the press rolls (1; 2) and the mold cavities (5) of one are offset from those of the other row,
dass die Profiltiefe der Formmulden (5) von der Pressbahnmittellinie (6) aus bis zum Pressbahnrand kontinuierlich abnimmt the profile depth of the mold cavities (5) continuously decreases from the press web center line (6) to the press web edge
und dass mindestens der Profilgrund jeder Formmulde (5) ins Freie mündet. and that at least the profile bottom of each mold cavity (5) opens into the open.
2. Pressformzeuge für Walzenpressen nach Anspruch 1, dadurch gekennzeichnet, dass die Formmulden (5) in einem Winkel von mindestens 5° zur Pressbahnmittellinie (6) angeordnet sind. 2. compression molding for roller presses according to claim 1, characterized in that the mold cavities (5) are arranged at an angle of at least 5 ° to the press web center line (6).
3. Pressformzeuge für Walzenpressen nach Anspruch 1, dadurch gekennzeichnet, dass die Formmulden (5) in eine umlaufende Nut (7) münden. 3. compression molding for roller presses according to claim 1, characterized in that the mold cavities (5) in a circumferential groove (7) open.
4. Pressformzeuge für Walzenpressen nach Anspruch 1, dadurch gekennzeichnet, dass die Abnahme der Profiltiefe der Formmulden (5) in Richtung Pressbahnrand kontinuierlich gestaltet ist. 4. compression molding for roller presses according to claim 1, characterized in that the decrease in the profile depth of the mold cavities (5) is designed to be continuous in the direction of press web edge.
Es folgt ein Blatt Zeichnung (Figur 1)! This is followed by a sheet drawing (Figure 1)!
PCT/DE2010/001233 2009-10-24 2010-10-19 Press molds for roller presses WO2011047668A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112010004136T DE112010004136A5 (en) 2009-10-24 2010-10-19 PRESS SHAPES FOR ROLLING PRESSES

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200910050605 DE102009050605A1 (en) 2009-10-24 2009-10-24 Press molds for roller presses
DE102009050605.5 2009-10-24

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WO2011047668A1 true WO2011047668A1 (en) 2011-04-28
WO2011047668A4 WO2011047668A4 (en) 2011-06-23

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012143010A1 (en) 2011-04-19 2012-10-26 Dako Denmark A/S New method for enzyme-mediated signal amplification

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE430885A (en) *
DE329047C (en) * 1920-11-15 Fritz Bossardt Roller press for the production of briquettes
FR654533A (en) * 1928-03-02 1929-04-08 Fr Groppel C Luhrig S Nachfolg Method and device for the production of sintered briquettes in roller presses
FR704434A (en) * 1930-10-28 1931-05-20 Cell mold for coal agglomerates
DE630574C (en) * 1936-05-30 Mitteldeutsche Stahlwerke Akt Forming roller for lignite briquette presses or the like.
US2662247A (en) * 1950-07-07 1953-12-15 Monsanto Chemicals Briquetting roll assembly
DE1037348B (en) * 1956-08-22 1958-08-21 Kloeckner Humboldt Deutz Ag Roller briquette press
US2958902A (en) * 1958-02-21 1960-11-08 Kloeckner Humboldt Deutz Ag Roller press for the briquetting of ore, coal or similar materials
US3143769A (en) * 1963-08-15 1964-08-11 Komarek Greaves And Company Briquetting roll pockets
GB1010282A (en) * 1960-06-17 1965-11-17 Nat Frost Prot Co Inc Machine for forming pellets and the like
US3883110A (en) * 1974-06-28 1975-05-13 United States Steel Corp Briquette mold pocket configuration

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE430885A (en) *
DE329047C (en) * 1920-11-15 Fritz Bossardt Roller press for the production of briquettes
DE630574C (en) * 1936-05-30 Mitteldeutsche Stahlwerke Akt Forming roller for lignite briquette presses or the like.
FR654533A (en) * 1928-03-02 1929-04-08 Fr Groppel C Luhrig S Nachfolg Method and device for the production of sintered briquettes in roller presses
FR704434A (en) * 1930-10-28 1931-05-20 Cell mold for coal agglomerates
US2662247A (en) * 1950-07-07 1953-12-15 Monsanto Chemicals Briquetting roll assembly
DE1037348B (en) * 1956-08-22 1958-08-21 Kloeckner Humboldt Deutz Ag Roller briquette press
US2958902A (en) * 1958-02-21 1960-11-08 Kloeckner Humboldt Deutz Ag Roller press for the briquetting of ore, coal or similar materials
GB1010282A (en) * 1960-06-17 1965-11-17 Nat Frost Prot Co Inc Machine for forming pellets and the like
US3143769A (en) * 1963-08-15 1964-08-11 Komarek Greaves And Company Briquetting roll pockets
US3883110A (en) * 1974-06-28 1975-05-13 United States Steel Corp Briquette mold pocket configuration

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012143010A1 (en) 2011-04-19 2012-10-26 Dako Denmark A/S New method for enzyme-mediated signal amplification

Also Published As

Publication number Publication date
DE102009050605A1 (en) 2011-04-28
DE112010004136A5 (en) 2012-09-20
WO2011047668A4 (en) 2011-06-23

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