EP3572153B1 - Roller mill with a scraper - Google Patents

Roller mill with a scraper Download PDF

Info

Publication number
EP3572153B1
EP3572153B1 EP18174238.8A EP18174238A EP3572153B1 EP 3572153 B1 EP3572153 B1 EP 3572153B1 EP 18174238 A EP18174238 A EP 18174238A EP 3572153 B1 EP3572153 B1 EP 3572153B1
Authority
EP
European Patent Office
Prior art keywords
blade
roller
roller mill
axis
holder
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.)
Active
Application number
EP18174238.8A
Other languages
German (de)
French (fr)
Other versions
EP3572153A1 (en
Inventor
Daniel Rickenbach
Daniel Mark
Phillipe HOLENSTEIN
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.)
Buehler AG
Original Assignee
Buehler AG
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
Priority to ES18174238T priority Critical patent/ES2823028T3/en
Application filed by Buehler AG filed Critical Buehler AG
Priority to EP18174238.8A priority patent/EP3572153B1/en
Priority to AU2019272925A priority patent/AU2019272925B2/en
Priority to MX2020012565A priority patent/MX2020012565A/en
Priority to JP2020565877A priority patent/JP6980135B2/en
Priority to KR1020207036746A priority patent/KR102318276B1/en
Priority to PCT/EP2019/063624 priority patent/WO2019224395A1/en
Priority to US17/058,423 priority patent/US11618034B2/en
Priority to BR112020023605-5A priority patent/BR112020023605B1/en
Priority to CN201980046406.4A priority patent/CN112423889A/en
Priority to CA3101384A priority patent/CA3101384C/en
Priority to RU2020142827A priority patent/RU2754044C1/en
Publication of EP3572153A1 publication Critical patent/EP3572153A1/en
Application granted granted Critical
Publication of EP3572153B1 publication Critical patent/EP3572153B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/28—Details
    • B02C4/40—Detachers, e.g. scrapers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/02—Crushing or disintegrating by roller mills with two or more rollers

Definitions

  • the invention relates to a roller mill with a stripper according to the independent claim.
  • Curved rollers are used in roller mills to counteract a bending of the roller during operation, which is caused by the high contact forces that prevail when grinding the ground material. This ensures that the grinding gap has a uniform grinding gap width during operation.
  • a scraper is arranged, which is used for stripping ground material.
  • the scraper should ensure that regrind does not stick to the roller, since such regrind is undesirable in many ways.
  • regrind that sticks to the roller causes a narrowing of the reed when it passes through the grinding gap, which can lead to undesirable oscillations and vibrations.
  • the adhering regrind is compressed and compressed so that the removal of regrind adhering to the roller is made more difficult with a scraper. This is adversely affected by the high temperatures prevailing during grinding, which cause drying and "baking" of regrind.
  • adhesive regrind offers a better adhesion surface for further regrind and favors the growth of such regrind buildup. In the worst case, the roller must be stopped and incrustations removed manually.
  • wipers have been used which have a blade with a straight wiper edge in the idle state or in the undeformed state, which is firmly clamped in a holder becomes.
  • the holder is arranged pivotably below the roller, immediately after the nip and is pressed against the roller in operation by means of a counterweight which is attached to a bracket of the holder.
  • the blade is aligned with the roller at rest and the bracket is then bent in the center, which coincides with the center of the roller, using a pulling device (which often also serves as a counterweight boom) to compensate for the roller's bombing.
  • a pulling device which often also serves as a counterweight boom
  • Such a scraper is in the EP 0 040 432 A1 shown.
  • the roller mill comprises a housing with a regrind inlet, at least one regrind outlet and at least two cambered rollers, which are each arranged rotatably about a roller axis in the housing.
  • a wiper is assigned to at least one roller.
  • Several rollers, preferably all rollers of the roller mill, are preferably equipped with a stripper.
  • a plurality of wipers can also be assigned to a roller.
  • the stripper comprises a blade for stripping ground material from a roller surface.
  • the blade has a scraper edge that extends the entire length of the blade.
  • the length of the blade preferably corresponds essentially to the axial length of the roller, so that the entire roller surface can be stripped off with one blade.
  • a segmented blade consisting of several elements, which can line up the entire roll surface, is also conceivable.
  • the scraper further comprises a holder with a receiving area, the holder being arranged in the housing so as to be tiltable about an axis parallel to the roller axis.
  • the holder and consequently the blade can thus be removed from the roller surface by tilting, for example if no grinding operation is carried out in order to protect the blade and the roller surface.
  • an elastic mounting is arranged between the blade and the receiving area.
  • the elastic mounting in the receiving area of the blade means that the blade is not clamped firmly in the holder, but rather that the blade can move relative to the holder.
  • the elastic mounting is arranged on the side of the blade which, when the roller mill is in operation, is subjected to pressure when the blade touches the roller surface, that is to say it faces away from the roller.
  • the blade can thus be designed in such a way that a bend is possible to adapt to the roll surface, but is rigid for other bending moments, in particular bending moments parallel to the roll axis, so that fluttering of the blade is avoided during operation.
  • the holder on the roller mill is preferably arranged such that the axis of the holder remains parallel to the roller axis when the roller axis moves (e.g. a set).
  • the receiving area is preferably designed as a groove, with an elastic bearing being arranged at least between a groove wall and the blade.
  • the thickness of the bearing (on one or both sides of the blade) is typically between 2 and 10 mm within the scope of the invention.
  • the groove wall is the groove wall which extends in the depth direction of the groove.
  • the groove bottom is the wall of the groove which is an open side of the groove, which corresponds to a lateral surface of the holder, is facing away.
  • the groove is preferably designed as a groove with two mutually parallel groove walls and a flat groove bottom, which is arranged perpendicular to the groove walls.
  • An elastic mounting is preferably arranged between the blade and the two groove walls.
  • Such an embodiment allows the blade to bend on both sides, so that in order to allow the same freedom of movement as the embodiment described above with only one elastic bearing, two half-as-thick elastic bearings must be arranged on both sides of the blade.
  • the blade preferably lies on a groove bottom.
  • the blade and the at least one elastic mounting are preferably held in a clamping profile which is arranged in the receiving area.
  • the blade and the at least one elastic bearing are held in a clamping profile.
  • the clamping profile is then inserted into the receiving area and held there with holding means.
  • the clamping profile can be designed such that an elastic mounting is arranged on a profile wall (which corresponds to a groove wall) or on both profile walls.
  • the blade can also rest on a profile floor (corresponds to the groove floor) to avoid slipping.
  • the blade and / or the holder and / or the clamping profile preferably comprise lateral limiting means, which prevent the blade from being displaced in the axial direction with respect to the roller axis.
  • the blade is preferably designed as a flat profile, in particular with a rectangular cross section.
  • the blade is preferably formed from a cold-rolled steel strip (for example in steel quality WB, without chrome and nickel, hardened, tempered and white polished). Blades with a tensile strength in the range of 1,550-2,350 MPa (measured in accordance with EN 10132-1) are particularly preferred.
  • the thickness of the blade is typically 0.5 to 2 mm within the scope of the invention.
  • the blade preferably has a length to width ratio of 1.6: 1 to 300: 1.
  • blade length means the spatial extent of the blade in the direction of extension of the scraper edge.
  • the length of the blade can be between 100mm and 3,000mm, preferably between 500mm and 2,500mm, particularly preferably between 1'000mm and 2'000mm, for example 1'500mm.
  • the blade width means the spatial extension perpendicular to the blade length.
  • the width of the blade can be between 10mm and 60mm, preferably between 20mm and 55mm, particularly preferably 30mm and 50mm, for example 40mm.
  • the blade height is thus the spatial extension of the blade perpendicular to the blade length and the blade width, which extends from the scraper edge to an end facing away from the scraper edge.
  • the blade height typically, between 10 and 30 mm of the total blade height are accommodated in the elastomeric bearing within the scope of the invention.
  • the blade preferably has a height to free height ratio of 6: 1, more preferably greater than 1: 1 to 6: 1.
  • the free height of the blade means the height dimension of the blade that protrudes from the holder. Since the blade does not touch the holder, the height dimension between the scraper edge and an (imaginary) envelope surface of the holder is understood as the free height.
  • the blade is preferably arranged at an angle between 20 ° and 75 °, more preferably between 30 ° and 60 °, particularly preferably between 30 ° and 50 ° to the roller surface when the blade touches the roller surface.
  • the angle is measured as the angle between a plane tangential to the roll surface and the height direction of the blade.
  • the blade is bent according to the invention when the roller is touched and consequently the angle varies slightly over the length of the blade, the angle in the center of the roller, where the crowning of the roller is at its maximum, is used as the reference angle.
  • the elastic bearing can be formed from or comprise elastomeric materials, preferably selected from the group consisting of: natural rubber (NR); Styrene-butadiene rubber (SBR); Butyl rubber (IIR); Ethylene propylene rubber (EPDM); Nitrile rubber (NBR); Chloroprene neoprene (CR); Chlorosulfonated polyethylene, hypalon (CSM); Polyurethane rubber (AU, EU); Silicone rubber ((M) Q); Polyacrylate elastomer (ACM); hydrogenated nitrile rubber (H-NBR); Fluororubber, Viton (FPM); Polyurethane (PU). Ethylene-propylene rubber (EPDM) and silicone rubber ((M) Q) are particularly preferred.
  • NR natural rubber
  • SBR Styrene-butadiene rubber
  • IIR Butyl rubber
  • EPDM Ethylene propylene rubber
  • NBR Nitrile rubber
  • CSM Chloropren
  • the elastic mounting is designed as an elastomer strip.
  • the storage, in particular the elastomer strips can be continuous or interrupted over the entire length of the blade.
  • An interrupted formation of the bearing is possible and useful, in particular, for the individual adaptation of the rigidity of the resulting total bearing; for example, a harder material can be arranged in an interrupted manner in order to achieve a hardness of the overall bearing that corresponds to a continuous bearing made of a softer material.
  • the bearing in particular the elastomeric material of the elastomer strip, has a hardness between 15 and 100 Shore OO, preferably between 30 and 90 Shore OO, particularly preferably between 40 and 80 Shore OO (according to ASTM D 2240; and / or between 5 and 30 Shore A (measured according to DIN ISO 7619-1).
  • the density of the elastic support can be between 0.25 g / cm 3 and 0.85 g / cm 3 , preferably 0.35 g / cm 3 and 0.75 g / cm 3 , particularly preferably 0.45 g / cm 3 and 0.65 g / cm 3 (according to DIN 53479 A ).
  • Such an embodiment represents a very simple and inexpensive variant.
  • the strip can be exchanged and its hardness can be adjusted.
  • the holder is preferably provided with a counterweight by means of which the blade can be tilted about the axis and pressed against the roller surface.
  • the contact pressure of the blade against the roller can be adjusted in a simple manner, be it by changing the weight and / or the lever arm length.
  • the scraper is preferably in operative connection with a lifting device, by means of which the blade can be tilted about the axis and moved away from the roller surface.
  • This embodiment allows the blade to be removed from the roller surface when there is no grinding process and is in particular coupled to an actuator arrangement of the rollers, so that when the rollers are inserted and / or disengaged the blade is also brought into contact with the blade surface and / or from this is moved away.
  • the blade is preferably arranged such that the scraper edge is parallel to the roller axis when the blade is not touching the roller surface.
  • the blade is preferably received in the receiving area over its entire length.
  • the elastic mounting is consequently formed over the entire length of the blade.
  • the blade can be accommodated only in sections in the receiving area and / or the elastic mounting can be formed only in sections over the length of the blade. It is understood that in such a case, in the areas without elastic support, the blade, if it does not touch the roller surface, must not touch the receiving area either.
  • a roller mill 1 according to the present invention is shown schematically.
  • the roller mill 1 comprises a Housing 2 with a regrind inlet, indicated by the arrow 3, and a regrind outlet 4, also indicated by the arrow 4.
  • Two cambered rollers 5 and 5 ' are arranged in the housing 2, which are each rotatably mounted about a roller axis 6 and 6' and can be driven in opposite directions by means of a drive (not shown).
  • the direction of rotation of the rollers 5 and 5 ' is indicated by an arrow.
  • each roller 5 or 5 ' is assigned a scraper 7 or 7'.
  • the scraper 7 of the roller 5 is separated into two possible variants in the Figures 2 and 3rd shown.
  • the scraper 7 of Figures 2 and 3rd comprises a blade 8, which is formed from a flat metal profile with a length L, a width B and a height H.
  • the longitudinal direction of the blade 8 is indicated by the vector L.
  • the scraper 7 has a holder 11 which is arranged to be tiltable about an axis 13.
  • the axis 13 runs parallel to the roller axis 6 or 6 'and remains parallel to the roller axis 6 or 6', even if the roller axis is displaced, for example when the rollers are set.
  • the bracket 11 comprises a receiving area 12, which as a groove 15 with two parallel to each other extending groove walls 16 and 16 'and a perpendicular groove bottom 17, which extend in the longitudinal direction L of the blade 8 (and thus the holder 11).
  • the blade 8 is arranged in the groove 15 and touches the end of the groove 17 with the end facing away from the scraper edge.
  • An elastomer strip 14 is arranged on both sides of the blade 8 between the respective groove wall 16 or 16 'and the blade 8, so that the blade 8 enjoys a certain freedom of movement in the groove 15 and in particular can be bent parallel to the height of the blade 8 by a bending moment and can adapt to the curvature of the roller 5.
  • FH is the free height of the blade 8, which corresponds to the height of the blade 8, which is not arranged between the elastomer strips 14.
  • the holder 11 is, as already explained above, arranged to be tiltable about the axis 13.
  • the holder comprises a counterweight 19 which, by lever action, causes the holder 11 to tilt and the blade 8 to be pressed against the roller surface 9.
  • the Indian Figure 3 The scraper 7 shown corresponds in structure to the scraper 7 Figure 2 with the difference that the blade 8 and the elastomer strips 14 are arranged in a clamping profile 18, the clamping profile 18 being inserted in the receiving region 12 of the holder 11.
  • the clamping profile 18 is designed as a plastic profile and has two profile walls 160 and 160 'which run parallel to one another and a profile floor 170 which runs perpendicularly thereto and which correspond in function to the groove walls 16 and 16' and the groove base 17, respectively.
  • the clamping profile 18 simplifies the placement of the blade 8 with the elastomer strips 14 in the receiving area 12.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Cleaning In General (AREA)
  • Crushing And Pulverization Processes (AREA)

Description

Die Erfindung betrifft eine Walzenmühle mit einem Abstreifer nach dem unabhängigen Anspruch.The invention relates to a roller mill with a stripper according to the independent claim.

Bombierte Walzen werden bei Walzenmühlen verwendet, um einer Biegung der Walze in Betrieb entgegenzuwirken, welche durch die hohen Anpresskräfte verursacht wird, die beim Vermahlen von Mahlgut herrschen. Es wird somit sichergestellt, dass der Mahlspalt im Betrieb eine gleichmässige Mahlspaltbreite aufweist. Unmittelbar nach dem Mahlspalt ist ein Abstreifer angeordnet, welcher zum Abstreifen von Mahlgut Anwendung findet.Curved rollers are used in roller mills to counteract a bending of the roller during operation, which is caused by the high contact forces that prevail when grinding the ground material. This ensures that the grinding gap has a uniform grinding gap width during operation. Immediately after the grinding gap, a scraper is arranged, which is used for stripping ground material.

Der Abstreifer soll sicherstellen, dass Mahlgut nicht an der Walze haften bleibt, da eine solche Haftung von Mahlgut in vielerlei Hinsicht unerwünscht ist. Zum einen verursacht Mahlgut, das an der Walze haften bleibt, beim erneuten Passieren des Mahlspalts eine Verengung desselben, die zu unerwünschten Schwingungen und Vibrationen führen kann. Zum anderen wird beim erneuten Passieren des Mahlspalts das haftende Mahlgut noch mehr zusammengepresst und verdichtet, so dass die Entfernung von an der Walze haftendem Mahlgut mit einem Abstreifer erschwert wird. Ungünstig beeinflusst wird dies durch die beim Vermahlen herrschenden, hohen Temperaturen, welche ein Trocknen und "Festbacken" von Mahlgut verursachen. Zudem bietet haftendes Mahlgut eine bessere Haftfläche für weiteres Mahlgut und begünstigt das Wachstum von solchen Mahlgutanhaftungen. Im schlimmsten Fall muss die Walze gestoppt und aufwendig manuell von Verkrustungen befreit werden.The scraper should ensure that regrind does not stick to the roller, since such regrind is undesirable in many ways. On the one hand, regrind that sticks to the roller causes a narrowing of the reed when it passes through the grinding gap, which can lead to undesirable oscillations and vibrations. On the other hand, when passing through the grinding gap again, the adhering regrind is compressed and compressed so that the removal of regrind adhering to the roller is made more difficult with a scraper. This is adversely affected by the high temperatures prevailing during grinding, which cause drying and "baking" of regrind. In addition, adhesive regrind offers a better adhesion surface for further regrind and favors the growth of such regrind buildup. In the worst case, the roller must be stopped and incrustations removed manually.

Bis jetzt werden Abstreifer verwendet, welche eine Klinge mit einer im Ruhezustand, bzw. in unverformtem Zustand, geraden Abstreiferkante aufweisen, die in einer Halterung fest eingespannt wird. Die Halterung ist unterhalb der Walze, unmittelbar nach dem Walzenspalt, schwenkbar angeordnet und wird in Betrieb mittels eines Gegengewichtes, welches an einem Ausleger der Halterung befestigt ist, gegen die Walze gepresst.So far, wipers have been used which have a blade with a straight wiper edge in the idle state or in the undeformed state, which is firmly clamped in a holder becomes. The holder is arranged pivotably below the roller, immediately after the nip and is pressed against the roller in operation by means of a counterweight which is attached to a bracket of the holder.

Die Klinge wird an der ruhenden Walze ausgerichtet und die Halterung wird dann in der Mitte, welche mit der Mitte der Walze übereinstimmt, mithilfe einer Zugvorrichtung (die oft gleichzeitig als Ausleger für das Gegengewicht dient) gebogen, um die Bombage der Walze auszugleichen. Ein solcher Abstreifer ist in der EP 0 040 432 A1 gezeigt.The blade is aligned with the roller at rest and the bracket is then bent in the center, which coincides with the center of the roller, using a pulling device (which often also serves as a counterweight boom) to compensate for the roller's bombing. Such a scraper is in the EP 0 040 432 A1 shown.

Da ein solcher Ausgleich bei ruhender Walze stattfindet, die Walze aber im Betrieb gebogen wird und die Bombage sich entsprechend ändert, ist eine solche Lösung nicht zufriedenstellend. Zwar kann eine ursprünglich gerade Klinge eingeschliffen werden, um einer Walzenbombierung entgegenzukommen; es bleiben aber trotzdem noch andere Ursachen für ein Nicht-Anliegen des Abstreifers an der Walze. Zum Beispiel bleibt eine Bombierung wegen Deformation und Wärmedehnung im Betrieb nicht konstant. Im Stand der Technik wird eine höhere Anpresskraft des Abstreifers benützt (um ihn zu verformen, sodass er sich genügend gut der Walzenoberfläche anpasst), als eigentlich für die effektive Reinigung erforderlich wäre. Diese höhere Anpresskraft resultiert in einem unnötig hohen Verschleiss des Abstreifers und der Walzenoberfläche.Since such compensation takes place with the roller at rest, but the roller is bent during operation and the bombage changes accordingly, such a solution is unsatisfactory. It is true that an originally straight blade can be ground in to accommodate roller crowning; However, there are still other causes for the scraper not resting against the roller. For example, crowning due to deformation and thermal expansion does not remain constant during operation. In the prior art, a higher contact pressure of the scraper is used (in order to deform it so that it adapts sufficiently well to the roll surface) than would actually be required for effective cleaning. This higher contact pressure results in unnecessarily high wear on the scraper and the roller surface.

Es ist daher Aufgabe der vorliegenden Erfindung eine Walzenmühle mit wenigstens einem Abstreifer bereitzustellen, welche die Nachteile des Bekannten vermeidet und insbesondere eine optimale Anpassung an die Bombage einer Walze in Betrieb bei Einhaltung der Sicherheitsvorschriften ermöglicht und verschleissarm ist.It is therefore an object of the present invention to provide a roller mill with at least one scraper, which avoids the disadvantages of the known and in particular enables optimal adaptation to the bombing of a roller in operation while observing the safety regulations and is low in wear.

Die Aufgabe wird mit einer Walzenmühle nach dem unabhängigen Anspruch 1 gelöst.The object is achieved with a roller mill according to independent claim 1.

Die Walzenmühle umfasst ein Gehäuse mit einem Mahlguteinlass, wenigstens einem Mahlgutauslass und wenigstens zwei bombierten Walzen, welche jeweils drehbar um eine Walzenachse im Gehäuse angeordnet sind.The roller mill comprises a housing with a regrind inlet, at least one regrind outlet and at least two cambered rollers, which are each arranged rotatably about a roller axis in the housing.

Wenigstens einer Walze ist ein Abstreifer zugeordnet. Bevorzugt sind mehrere Walzen, vorzugsweise alle Walzen der Walzenmühle mit einem Abstreifer ausgestattet. Auch kann einer Walze eine Mehrzahl von Abstreifern zugeordnet werden.A wiper is assigned to at least one roller. Several rollers, preferably all rollers of the roller mill, are preferably equipped with a stripper. A plurality of wipers can also be assigned to a roller.

Erfindungsgemäss umfasst der Abstreifer eine Klinge zum Abstreifen von Mahlgut von einer Walzenoberfläche. Die Klinge weist eine Abstreiferkante auf, welche sich über die gesamte Länge der Klinge erstreckt. Die Länge der Klinge entspricht vorzugsweise im Wesentlichen der axialen Länge der Walze, so dass mit einer Klinge die gesamte Walzenoberfläche abgestreift werden kann. Eine segmentierte Klinge, bestehend aus mehreren Elementen, welche aneinandergereiht die gesamte Walzenoberfläche abstreifen können, ist ebenso denkbar.According to the invention, the stripper comprises a blade for stripping ground material from a roller surface. The blade has a scraper edge that extends the entire length of the blade. The length of the blade preferably corresponds essentially to the axial length of the roller, so that the entire roller surface can be stripped off with one blade. A segmented blade consisting of several elements, which can line up the entire roll surface, is also conceivable.

Der Abstreifer umfasst ferner eine Halterung mit einem Aufnahmebereich, wobei die Halterung um eine Achse parallel zur Walzenachse kippbar im Gehäuse angeordnet ist. Die Halterung und demzufolge die Klinge kann somit durch Kippen von der Walzenoberfläche entfernt werden, beispielsweise wenn kein Mahlvorgang durchgeführt wird, um die Klinge und die Walzenoberfläche zu schonen.The scraper further comprises a holder with a receiving area, the holder being arranged in the housing so as to be tiltable about an axis parallel to the roller axis. The holder and consequently the blade can thus be removed from the roller surface by tilting, for example if no grinding operation is carried out in order to protect the blade and the roller surface.

Zwischen der Klinge und dem Aufnahmebereich ist erfindungsgemäss eine elastische Lagerung angeordnet.According to the invention, an elastic mounting is arranged between the blade and the receiving area.

Durch die elastische Lagerung im Aufnahmebereich der Klinge wird erreicht, dass die Klinge nicht fest in der Halterung eingespannt wird, sondern eine Bewegung der Klinge relativ zur Halterung ermöglicht wird. Insbesondere wird die Klinge, wenn diese die Walzenoberfläche berührt, gebogen und schmiegt sich an die Walzenoberfläche an, so dass eine Bombierung und eine in Betrieb der Walze entstehende Biegung, bzw. Wärmedehnung, ausgeglichen werden können. Es versteht sich, dass die elastische Lagerung an der Seite der Klinge angeordnet ist, die in Betrieb der Walzenmühle, wenn die Klinge die Walzenoberfläche berührt, auf Druck belastet wird, also der Walze abgewandt ist. Die Klinge kann somit derart ausgestaltet werden, dass eine Biegung zur Anpassung an die Walzenoberfläche möglich ist, jedoch für andere Biegemomente, insbesondere Biegemomente parallel zur Walzenachse, biegesteif ist, so dass ein Flattern der Klinge in Betrieb vermieden wird. Bevorzugt ist die Halterung an der Walzenmühle derart angeordnet, dass bei einer Bewegung der Walzenachse (z.B. eine Schränkung) die Achse der Halterung parallel zur Walzenachse bleibt.The elastic mounting in the receiving area of the blade means that the blade is not clamped firmly in the holder, but rather that the blade can move relative to the holder. In particular, when the blade touches the roller surface, it is bent and nestles against the roller surface, so that a crowning and a bending or thermal expansion occurring during operation of the roller can be compensated for. It goes without saying that the elastic mounting is arranged on the side of the blade which, when the roller mill is in operation, is subjected to pressure when the blade touches the roller surface, that is to say it faces away from the roller. The blade can thus be designed in such a way that a bend is possible to adapt to the roll surface, but is rigid for other bending moments, in particular bending moments parallel to the roll axis, so that fluttering of the blade is avoided during operation. The holder on the roller mill is preferably arranged such that the axis of the holder remains parallel to the roller axis when the roller axis moves (e.g. a set).

Bevorzugt ist der Aufnahmebereich als Nut ausgebildet, wobei wenigstens zwischen einer Nutwand und der Klinge eine elastische Lagerung angeordnet ist.The receiving area is preferably designed as a groove, with an elastic bearing being arranged at least between a groove wall and the blade.

Die Dicke der Lagerung (auf einer oder beiden Seiten der Klinge) liegt im Rahmen der Erfindung typischerweise zwischen 2 und 10 mm.The thickness of the bearing (on one or both sides of the blade) is typically between 2 and 10 mm within the scope of the invention.

Als Nutwand im Sinne der vorliegenden Erfindung wird die Wand der Nut bezeichnet, welche sich in Tiefenrichtung der Nut erstreckt. Als Nutboden wird im Sinne der vorliegenden Erfindung die Wand der Nut bezeichnet, welche einer offenen Seite der Nut, die mit einer Mantelfläche der Halterung übereinstimmt, abgewandt ist.For the purposes of the present invention, the groove wall is the groove wall which extends in the depth direction of the groove. For the purposes of the present invention, the groove bottom is the wall of the groove which is an open side of the groove, which corresponds to a lateral surface of the holder, is facing away.

Die Nut ist dabei bevorzugt als Nut mit zwei zueinander parallelen Nutwänden und einem ebenen Nutboden, der senkrecht zu den Nutwänden angeordnet ist, ausgebildet.The groove is preferably designed as a groove with two mutually parallel groove walls and a flat groove bottom, which is arranged perpendicular to the groove walls.

Bevorzugt ist zwischen der Klinge und beiden Nutwänden eine elastische Lagerung angeordnet.An elastic mounting is preferably arranged between the blade and the two groove walls.

Eine solche Ausführungsform erlaubt eine Biegung der Klinge an beiden Seiten, so dass, um die gleiche Bewegungsfreiheit wie die oben beschriebene Ausführungsform mit nur einer elastischen Lagerung zu ermöglichen, zwei halb so dicke elastische Lagerungen an beiden Seiten der Klinge angeordnet werden müssen.Such an embodiment allows the blade to bend on both sides, so that in order to allow the same freedom of movement as the embodiment described above with only one elastic bearing, two half-as-thick elastic bearings must be arranged on both sides of the blade.

Die Klinge liegt bevorzugt an einem Nutboden an.The blade preferably lies on a groove bottom.

Dadurch wird sichergestellt, dass ein Verrutschen der Klinge aufgrund des Anpressdruckes der Klinge gegen die Walzenoberfläche vermieden wird, da die Klinge, im Gegensatz zu Abstreifern nach dem Stand der Technik, nicht starr mit der Halterung verbunden ist.This ensures that the blade is prevented from slipping due to the contact pressure of the blade against the roller surface, since, in contrast to scrapers according to the prior art, the blade is not rigidly connected to the holder.

Bevorzugt sind die Klinge und die wenigstens eine elastische Lagerung in einem Klemmprofil gehalten, welcher in dem Aufnahmebereich angeordnet ist.The blade and the at least one elastic mounting are preferably held in a clamping profile which is arranged in the receiving area.

Um die Montage zu vereinfachen kann es vorgesehen werden, dass die Klinge und die wenigstens eine elastische Lagerung in einem Klemmprofil gehalten werden. Das Klemmprofil wird dann in den Aufnahmebereich gesteckt und dort mit Haltemitteln gehalten.To simplify assembly, it can be provided that the blade and the at least one elastic bearing are held in a clamping profile. The clamping profile is then inserted into the receiving area and held there with holding means.

Entsprechend der oben beschriebenen Ausführungsformen betreffend die Ausgestaltung der Klinge und der wenigstens einen elastischen Lagerung in der Nut kann das Klemmprofil derart ausgestaltet sein, dass an einer Profilwand (welche einer Nutwand entspricht) oder an beiden Profilwänden eine elastische Lagerung angeordnet ist. Ebenso kann die Klinge an einem Profilboden (entspricht dem Nutboden) anlegen, um ein Verrutschen zu vermeiden.According to the embodiments described above regarding the configuration of the blade and the at least one elastic mounting in the groove, the clamping profile can be designed such that an elastic mounting is arranged on a profile wall (which corresponds to a groove wall) or on both profile walls. The blade can also rest on a profile floor (corresponds to the groove floor) to avoid slipping.

Bevorzugt umfassen die Klinge und/oder die Halterung und/oder das Klemmprofil seitliche Begrenzungsmittel, welche eine Verschiebung der Klinge in axialer Richtung bezüglich der Walzenachse vermeiden.The blade and / or the holder and / or the clamping profile preferably comprise lateral limiting means, which prevent the blade from being displaced in the axial direction with respect to the roller axis.

Die Klinge ist bevorzugt als flächiges Profil, insbesondere mit rechteckigem Querschnitt, ausgebildet.The blade is preferably designed as a flat profile, in particular with a rectangular cross section.

Die Klinge ist bevorzugt aus einem kaltgewalzte Stahlband geformt (bspw. in Stahlqualität WB, ohne Chrom und Nickel, gehärtet, angelassen und weisspoliert). Besonders bevorzugt sind Klingen mit einer Zugfestigkeit im Bereich von 1'550 - 2'350 MPa (gemessen gemäss EN 10132-1).The blade is preferably formed from a cold-rolled steel strip (for example in steel quality WB, without chrome and nickel, hardened, tempered and white polished). Blades with a tensile strength in the range of 1,550-2,350 MPa (measured in accordance with EN 10132-1) are particularly preferred.

Die Dicke der Klinge beträgt im Rahmen der Erfindung typischerweise 0.5 bis 2 mm.The thickness of the blade is typically 0.5 to 2 mm within the scope of the invention.

Bevorzugt weist die Klinge ein Verhältnis Länge zu Breite von 1.6:1 bis 300:1 auf.The blade preferably has a length to width ratio of 1.6: 1 to 300: 1.

Als Klingenlänge ist im Sinne der vorliegenden Anmeldung die räumliche Ausdehnung der Klinge in Erstreckungsrichtung der Abstreiferkante gemeint. Die Länge der Klinge kann zwischen 100mm und 3'000mm betragen, vorzugsweise zwischen 500mm und 2'500mm, besonders bevorzugt zwischen 1'000mm und 2'000mm, beispielsweise 1'500mm.In the sense of the present application, the term blade length means the spatial extent of the blade in the direction of extension of the scraper edge. The length of the blade can be between 100mm and 3,000mm, preferably between 500mm and 2,500mm, particularly preferably between 1'000mm and 2'000mm, for example 1'500mm.

Als Klingenbreite wird im Sinne der vorliegenden Anmeldung die räumliche Ausdehnung senkrecht zur Klingenlänge gemeint. Die Breite der Klinge kann zwischen 10mm und 60mm betragen, vorzugsweise zwischen 20mm und 55mm, besonders bevorzugt 30mm und 50mm, beispielsweise 40mm.In the sense of the present application, the blade width means the spatial extension perpendicular to the blade length. The width of the blade can be between 10mm and 60mm, preferably between 20mm and 55mm, particularly preferably 30mm and 50mm, for example 40mm.

Als Klingenhöhe wird folglich im Sinne der vorliegenden Anmeldung die räumliche Ausdehnung der Klinge senkrecht zur Klingenlänge und zur Klingenbreite gemeint, welche sich von der Abstreiferkante zu einem von der Abstreiferkante abgewandten Ende erstreckt. Typischerweise sind im Rahmen der Erfindung zwischen 10 und 30 mm der gesamten Klingenhöhe in der elastomeren Lagerung aufgenommen.In the sense of the present application, the blade height is thus the spatial extension of the blade perpendicular to the blade length and the blade width, which extends from the scraper edge to an end facing away from the scraper edge. Typically, between 10 and 30 mm of the total blade height are accommodated in the elastomeric bearing within the scope of the invention.

Bevorzugt weist die Klinge ein Verhältnis der Höhe zur freien Höhe von 6:1, bevorzugter von grösser 1:1 bis 6:1 auf.The blade preferably has a height to free height ratio of 6: 1, more preferably greater than 1: 1 to 6: 1.

Als freie Höhe der Klinge ist im Sinne der vorliegenden Anmeldung die Höhenabmessung der Klinge gemeint, die aus der Halterung herausragt. Da die Klinge die Halterung nicht berührt, wird folglich als freie Höhe die Höhenabmessung zwischen der Abstreiferkante und einer (imaginären) Hüllfläche der Halterung verstanden.For the purposes of the present application, the free height of the blade means the height dimension of the blade that protrudes from the holder. Since the blade does not touch the holder, the height dimension between the scraper edge and an (imaginary) envelope surface of the holder is understood as the free height.

Die Klinge ist bevorzugt mit einem Winkel zwischen 20° und 75°, bevorzugter zwischen 30° und 60°, besonders bevorzugt zwischen 30° und 50° zur Walzenoberfläche angeordnet, wenn die Klinge die Walzenoberfläche berührt.The blade is preferably arranged at an angle between 20 ° and 75 °, more preferably between 30 ° and 60 °, particularly preferably between 30 ° and 50 ° to the roller surface when the blade touches the roller surface.

Der Winkel wird als Winkel zwischen einer Ebene tangential zur Walzenoberfläche und der Höhenerstreckungsrichtung der Klinge gemessen.The angle is measured as the angle between a plane tangential to the roll surface and the height direction of the blade.

Da die Walze bombiert ist, die Klinge beim Berühren der Walze erfindungsgemäss gebogen wird und folglich der Winkel über die Länge der Klinge leicht variiert, wird als Bezugswinkel der Winkel in der Mitte der Walze, wo die Bombierung der Walze maximal ist, herangezogen.Since the roller is cambered, the blade is bent according to the invention when the roller is touched and consequently the angle varies slightly over the length of the blade, the angle in the center of the roller, where the crowning of the roller is at its maximum, is used as the reference angle.

Die elastische Lagerung kann aus elastomeren Materialen gebildet sein oder solche umfassen, vorzugsweise ausgewählt aus der Gruppe bestehend aus: Naturgummi (NR); Styrol-Butadien Kautschuk (SBR); Butyl-Kautschuk (IIR); Ethylen-Propylen-Kautschuk (EPDM); Nitril-Kautschuk (NBR); Chloropren Neoprene (CR); Chlorsulfoniertes Polyethylen, Hypalon (CSM); Polyurethan-kautschuk (AU, EU); Silikon-kautschuk ((M)Q); Polyacrylat-elastomer (ACM); hydrierter Nitrilkautschuk (H-NBR); Fluorkautschuk, Viton (FPM); Polyurethan (PU). Besonders bevorzugt sind Ethylen-Propylen-Kautschuk (EPDM) sowie Silikon-kautschuk ((M)Q).The elastic bearing can be formed from or comprise elastomeric materials, preferably selected from the group consisting of: natural rubber (NR); Styrene-butadiene rubber (SBR); Butyl rubber (IIR); Ethylene propylene rubber (EPDM); Nitrile rubber (NBR); Chloroprene neoprene (CR); Chlorosulfonated polyethylene, hypalon (CSM); Polyurethane rubber (AU, EU); Silicone rubber ((M) Q); Polyacrylate elastomer (ACM); hydrogenated nitrile rubber (H-NBR); Fluororubber, Viton (FPM); Polyurethane (PU). Ethylene-propylene rubber (EPDM) and silicone rubber ((M) Q) are particularly preferred.

Im einfachsten Fall ist die elastische Lagerung als Elastomerstreifen ausgebildet. Die Lagerung, insbesondere der Elastomerstreifen, kann über die ganze Klingenlänge durchgehend oder auch unterbrochen ausgebildet sein. Eine unterbrochene Ausbildung der Lagerung ist insbesondere zur individuellen Anpassung der Steifigkeit der resultierenden Gesamtlagerung möglich und sinnvoll; so kann beispielsweise ein härteres Material unterbrochen angeordnet werden, um eine Härte der Gesamtlagerung zu erzielen, die einer durchgehenden Lagerung aus einem weicheren Material entspricht.In the simplest case, the elastic mounting is designed as an elastomer strip. The storage, in particular the elastomer strips, can be continuous or interrupted over the entire length of the blade. An interrupted formation of the bearing is possible and useful, in particular, for the individual adaptation of the rigidity of the resulting total bearing; for example, a harder material can be arranged in an interrupted manner in order to achieve a hardness of the overall bearing that corresponds to a continuous bearing made of a softer material.

Die Lagerung, insbesondere das elastomere Material des Elastomerstreifens, weist eine Härte zwischen 15 und 100 Shore OO, vorzugsweise zwischen 30 und 90 Shore OO, besonders bevorzugt zwischen 40 und 80 Shore OO (gemäss ASTM D 2240; und/oder zwischen 5 und 30 Shore A (gemessen gemäss DIN ISO 7619-1) auf.The bearing, in particular the elastomeric material of the elastomer strip, has a hardness between 15 and 100 Shore OO, preferably between 30 and 90 Shore OO, particularly preferably between 40 and 80 Shore OO (according to ASTM D 2240; and / or between 5 and 30 Shore A (measured according to DIN ISO 7619-1).

Die Dichte der elastischen Lagerung kann zwischen 0.25 g/cm3 und 0.85 g/cm3, vorzugsweise 0.35 g/cm3 und 0.75 g/cm3, besonders bevorzugt 0.45 g/cm3 und 0.65 g/cm3 (gemäss DIN 53479 A) betragen.The density of the elastic support can be between 0.25 g / cm 3 and 0.85 g / cm 3 , preferably 0.35 g / cm 3 and 0.75 g / cm 3 , particularly preferably 0.45 g / cm 3 and 0.65 g / cm 3 (according to DIN 53479 A ).

Eine solche Ausführungsform stellt eine sehr einfache und kostengünstige Variante dar. Zudem kann, je nach Anwendung, der Streifen ausgetauscht werden und dessen Härte angepasst werden.Such an embodiment represents a very simple and inexpensive variant. In addition, depending on the application, the strip can be exchanged and its hardness can be adjusted.

Die Halterung ist bevorzugt mit einem Gegengewicht versehen, mittels welchem die Klinge um die Achse kippbar und gegen die Walzenoberfläche pressbar ist.The holder is preferably provided with a counterweight by means of which the blade can be tilted about the axis and pressed against the roller surface.

Dadurch kann auf einfache Art und Weise der Anpressdruck der Klinge gegen die Walze eingestellt werden, sei es durch Änderung des Gewichtes und/oder der Hebelarmlänge.As a result, the contact pressure of the blade against the roller can be adjusted in a simple manner, be it by changing the weight and / or the lever arm length.

Der Abstreifer steht bevorzugt mit einer Abhebevorrichtung in Wirkverbindung, mittels welcher die Klinge um die Achse kippbar und von der Walzenoberfläche weg bewegbar ist.The scraper is preferably in operative connection with a lifting device, by means of which the blade can be tilted about the axis and moved away from the roller surface.

Diese Ausführungsform erlaubt die Entfernung der Klinge von der Walzenoberfläche, wenn kein Mahlvorgang stattfindet und ist insbesondere mit einer Aktuatoranordnung der Walzen gekoppelt, so dass beim Ein- und/oder Ausrücken der Walzen die Klinge ebenfalls mit der Klingenoberfläche in Berührung gebracht wird und/oder von dieser weg bewegt wird.This embodiment allows the blade to be removed from the roller surface when there is no grinding process and is in particular coupled to an actuator arrangement of the rollers, so that when the rollers are inserted and / or disengaged the blade is also brought into contact with the blade surface and / or from this is moved away.

Die Klinge ist bevorzugt derart angeordnet, dass die Abstreiferkante parallel zur Walzenachse ist, wenn die Klinge die Walzenoberfläche nicht berührt.The blade is preferably arranged such that the scraper edge is parallel to the roller axis when the blade is not touching the roller surface.

Die Klinge ist bevorzugt über seine gesamte Länge in dem Aufnahmebereich aufgenommen. Die elastische Lagerung ist folglich über die gesamte Länge der Klinge ausgebildet.The blade is preferably received in the receiving area over its entire length. The elastic mounting is consequently formed over the entire length of the blade.

Alternativ kann die Klinge nur abschnittsweise in dem Aufnahmebereich aufgenommen und/oder die elastische Lagerung nur abschnittsweise über die Länge der Klinge ausgebildet sein. Es versteht sich, dass in einem solchen Fall, in den Bereichen ohne elastische Lagerung, die Klinge, wenn sie die Walzenoberfläche nicht berührt, den Aufnahmebereich ebenfalls nicht berühren darf.Alternatively, the blade can be accommodated only in sections in the receiving area and / or the elastic mounting can be formed only in sections over the length of the blade. It is understood that in such a case, in the areas without elastic support, the blade, if it does not touch the roller surface, must not touch the receiving area either.

Die Erfindung wird nachfolgend anhand von bevorzugten Ausführungsbeispielen in Verbindung mit den Figuren besser beschrieben. Es zeigen:

Fig. 1
eine schematische Schnittansicht der Walzenmühle gemäss der Erfindung;
Fig. 2
eine schematische Schnittansicht des Abstreifers gemäss einer ersten bevorzugten Ausführungsform der Erfindung; und
Fig. 3
eine schematische Schnittansicht des Abstreifers gemäss einer zweiten bevorzugten Ausführungsform der Erfindung.
The invention is better described below on the basis of preferred exemplary embodiments in conjunction with the figures. Show it:
Fig. 1
is a schematic sectional view of the roller mill according to the invention;
Fig. 2
is a schematic sectional view of the wiper according to a first preferred embodiment of the invention; and
Fig. 3
is a schematic sectional view of the scraper according to a second preferred embodiment of the invention.

In der Figur 1 ist schematisch eine Walzenmühle 1 gemäss der vorliegenden Erfindung gezeigt. Die Walzenmühle 1 umfasst ein Gehäuse 2 mit einem Mahlguteinlass, durch den Pfeil 3 angedeutet, und einem Mahlgutauslass 4, durch den Pfeil 4 ebenfalls angedeutet. Im Gehäuse 2 sind zwei bombierte Walzen 5 und 5' angeordnet, welche jeweils um eine Walzenachse 6 bzw. 6' drehbar gelagert sind und mittels eines nicht dargestellten Antriebs gegenläufig antreibbar sind. Die Drehrichtung der Walzen 5 und 5' ist jeweils durch einen Pfeil angedeutet.In the Figure 1 a roller mill 1 according to the present invention is shown schematically. The roller mill 1 comprises a Housing 2 with a regrind inlet, indicated by the arrow 3, and a regrind outlet 4, also indicated by the arrow 4. Two cambered rollers 5 and 5 'are arranged in the housing 2, which are each rotatably mounted about a roller axis 6 and 6' and can be driven in opposite directions by means of a drive (not shown). The direction of rotation of the rollers 5 and 5 'is indicated by an arrow.

Unmittelbar nach einem Mahlspalt 20 ist jeder Walze 5 bzw. 5' ein Abstreifer 7 bzw. 7' zugeordnet. Der Abstreifer 7 der Walze 5 ist in zwei möglichen Varianten gesondert in den Figuren 2 und 3 gezeigt.Immediately after a grinding gap 20, each roller 5 or 5 'is assigned a scraper 7 or 7'. The scraper 7 of the roller 5 is separated into two possible variants in the Figures 2 and 3rd shown.

Der Abstreifer 7 der Figuren 2 und 3 umfasst eine Klinge 8, welche aus einem flächigen Metallprofil mit einer Länge L, einer Breite B und einer Höhe H ausgebildet ist. Die Längsrichtung der Klinge 8 ist durch den Vektor L angedeutet.The scraper 7 of Figures 2 and 3rd comprises a blade 8, which is formed from a flat metal profile with a length L, a width B and a height H. The longitudinal direction of the blade 8 is indicated by the vector L.

In den Figuren 2 und 3 berührt die Klinge 8 mit einer Abstreiferkante 10, welche spitz ausgeführt ist, eine Walzenoberfläche 9. Die Klinge 8 ist mit einem Winkel α zwischen einer zur Walzenoberfläche 9 am Berührungspunkt der Klinge 8 tangentialen Ebene TE und der Klinge 8 geneigt angeordnet.In the Figures 2 and 3rd touches the blade 8 with a scraper edge 10, which is pointed, a roller surface 9. The blade 8 is arranged at an angle α between a plane TE tangential to the roller surface 9 at the point of contact of the blade 8 and the blade 8.

In der Ausführungsform der Figuren 2 und 3 weist der Abstreifer 7 eine Halterung 11 auf, die um eine Achse 13 kippbar angeordnet ist. Die Achse 13 verläuft parallel zur Walzenachse 6 bzw. 6' und bleibt parallel zur Walzenachse 6 bzw. 6', auch wenn die Walzenachse verschoben wird, z.B. bei einer Schränkung der Walzen.In the embodiment of the Figures 2 and 3rd the scraper 7 has a holder 11 which is arranged to be tiltable about an axis 13. The axis 13 runs parallel to the roller axis 6 or 6 'and remains parallel to the roller axis 6 or 6', even if the roller axis is displaced, for example when the rollers are set.

Bei der Ausführungsform der Figur 2 umfasst die Halterung 11 einen Aufnahmebereich 12, welcher als Nut 15 mit zwei parallel zueinander verlaufenden Nutwänden 16 und 16' und einem senkrecht dazu verlaufenden Nutboden 17, die sich in Längsrichtung L der Klinge 8 (und somit der Halterung 11) erstrecken. Die Klinge 8 ist in der Nut 15 angeordnet und berührt mit dem der Abstreiferkante abgewandten Ende den Nutboden 17. An beiden Seiten der Klinge 8 ist zwischen der jeweiligen Nutwand 16 bzw. 16' und der Klinge 8 ein Elastomerstreifen 14 angeordnet, so dass die Klinge 8 in der Nut 15 eine gewisse Bewegungsfreiheit geniesst und insbesondere durch ein Biegemoment parallel zur Höhe der Klinge 8 gebogen und sich an die Bombierung der Walze 5 anpassen kann.In the embodiment of the Figure 2 The bracket 11 comprises a receiving area 12, which as a groove 15 with two parallel to each other extending groove walls 16 and 16 'and a perpendicular groove bottom 17, which extend in the longitudinal direction L of the blade 8 (and thus the holder 11). The blade 8 is arranged in the groove 15 and touches the end of the groove 17 with the end facing away from the scraper edge. An elastomer strip 14 is arranged on both sides of the blade 8 between the respective groove wall 16 or 16 'and the blade 8, so that the blade 8 enjoys a certain freedom of movement in the groove 15 and in particular can be bent parallel to the height of the blade 8 by a bending moment and can adapt to the curvature of the roller 5.

Mit FH wird die freie Höhe der Klinge 8 bezeichnet, welche der Höhe der Klinge 8, die nicht zwischen den Elastomerstreifen 14 angeordnet ist, entspricht.FH is the free height of the blade 8, which corresponds to the height of the blade 8, which is not arranged between the elastomer strips 14.

Damit die Klinge 8 gegen die Walzenoberfläche 9 gepresst werden kann ist die Halterung 11, wie oben bereits erläutert, um die Achse 13 kippbar angeordnet. Zudem umfasst die Halterung ein Gegengewicht 19, welches durch Hebelwirkung das Kippen der Halterung 11 und das Anpressen der Klinge 8 gegen die Walzenoberfläche 9 bewirkt.So that the blade 8 can be pressed against the roller surface 9, the holder 11 is, as already explained above, arranged to be tiltable about the axis 13. In addition, the holder comprises a counterweight 19 which, by lever action, causes the holder 11 to tilt and the blade 8 to be pressed against the roller surface 9.

Der in der Figur 3 dargestellte Abstreifer 7 entspricht im Aufbau im Wesentlichen dem Abstreifer 7 der Figur 2 mit dem Unterschied, dass die Klinge 8 und die Elastomerstreifen 14 in einem Klemmprofil 18 angeordnet sind, wobei das Klemmprofil 18 in dem Aufnahmebereich 12 der Halterung 11 eingesteckt ist.The Indian Figure 3 The scraper 7 shown corresponds in structure to the scraper 7 Figure 2 with the difference that the blade 8 and the elastomer strips 14 are arranged in a clamping profile 18, the clamping profile 18 being inserted in the receiving region 12 of the holder 11.

Das Klemmprofil 18 ist als Kunststoffprofil ausgebildet und weist zwei parallel zueinander verlaufende Profilwände 160 und 160' und einen senkrecht dazu verlaufenden Profilboden 170 auf, welche in ihrer Funktion den Nutwänden 16 bzw. 16' sowie dem Nutboden 17 entsprechen.The clamping profile 18 is designed as a plastic profile and has two profile walls 160 and 160 'which run parallel to one another and a profile floor 170 which runs perpendicularly thereto and which correspond in function to the groove walls 16 and 16' and the groove base 17, respectively.

Das Klemmprofil 18 vereinfacht das Platzieren der Klinge 8 mit den Elastomerstreifen 14 in den Aufnahmebereich 12.The clamping profile 18 simplifies the placement of the blade 8 with the elastomer strips 14 in the receiving area 12.

Claims (13)

  1. Roller mill (1) comprising a housing (2) having a milling-material inlet (3), at least one milling-material outlet (4) and at least two cambered rollers (5, 5') which are each arranged in the housing (2) so as to be rotatable about a roller axis (6), wherein at least one roller (5) is assigned a scrapper (7), wherein the scrapper (7)
    - has a blade (8) for scraping milling material from a roller surface (9) with a scrapper edge (10) which extends over the entire length (L) of the blade (8), and
    - comprises a holder (11) with a receiving region (12), wherein the holder is arranged in the housing (2) so as to be tiltable about an axis (13) parallel to the roller axis,
    characterized in that an elastic bearing (14) is arranged between the blade (8) and the receiving region (12).
  2. Roller mill (1) according to Claim 1, characterized in that the receiving region (12) has the form of a groove (15), wherein an elastic bearing (14) is arranged at least between a groove wall (16) and the blade (8).
  3. Roller mill (1) according to Claim 2, characterized in that an elastic bearing (14) is arranged between the blade (8) and both groove walls (16, 16').
  4. Roller mill (1) according to Claim 2 or 3, characterized in that the blade (8) abuts on a groove bottom (17).
  5. Roller mill (1) according to one of the preceding claims, characterized in that the blade (8) and the elastic bearing (14) are held in a clamping profile (18) which is arranged in the receiving region (12).
  6. Roller mill according to one of the preceding claims, characterized in that the blade (8) has a ratio between the length (L) and width (B) of 1.6:1 to 300:1.
  7. Roller mill (1) according to one of the preceding claims, characterized in that the blade (8) has a ratio between the height (H) and the free height (FH) of more than 1:1 to 6:1.
  8. Roller mill (1) according to one of the preceding claims, characterized in that the blade (8) is arranged at an angle (α) between 20° and 75°, preferably between 30° and 60°, particularly preferably between 30° and 50°, to the roller surface (9).
  9. Roller mill (1) according to one of the preceding claims, characterized in that the elastic bearing (14) is formed as an elastomer strip with a Shore OO hardness between 15 and 100, preferably between 30 and 90, particularly preferably between 40 and 80.
  10. Roller mill (1) according to one of the preceding claims, characterized in that the holder is provided with a counterweight (19) by means of which the blade (8) can be tilted about the axis (13) and can be pressed against the roller surface (9).
  11. Roller mill (1) according to one of the preceding claims, characterized in that the scrapper (7) is in operative connection with a lift-off device by means of which the blade (8) can be tilted about the axis (13) and can be moved away from the roller surface (9).
  12. Roller mill (1) according to one of the preceding claims, characterized in that the blade (8) is arranged in such a way that the scrapper edge (10) is parallel to the roller axis (6) when the blade (8) does not contact the roller surface.
  13. Roller mill (1) according to one of the preceding claims, characterized in that the blade (8) is received over its entire length (L) in the receiving region (12).
EP18174238.8A 2018-05-25 2018-05-25 Roller mill with a scraper Active EP3572153B1 (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
EP18174238.8A EP3572153B1 (en) 2018-05-25 2018-05-25 Roller mill with a scraper
ES18174238T ES2823028T3 (en) 2018-05-25 2018-05-25 Roller mill with a scraper
CN201980046406.4A CN112423889A (en) 2018-05-25 2019-05-27 Roller mill with scraper
JP2020565877A JP6980135B2 (en) 2018-05-25 2019-05-27 Roller mill with scraper
KR1020207036746A KR102318276B1 (en) 2018-05-25 2019-05-27 roller grinder with scraper
PCT/EP2019/063624 WO2019224395A1 (en) 2018-05-25 2019-05-27 Roller mill with a scraper
AU2019272925A AU2019272925B2 (en) 2018-05-25 2019-05-27 Roller mill with a scraper
BR112020023605-5A BR112020023605B1 (en) 2018-05-25 2019-05-27 CYLINDER MILL WITH A SCRAPER
MX2020012565A MX2020012565A (en) 2018-05-25 2019-05-27 Roller mill with a scraper.
CA3101384A CA3101384C (en) 2018-05-25 2019-05-27 Roller mill with a scraper
RU2020142827A RU2754044C1 (en) 2018-05-25 2019-05-27 Roller mill with scraper
US17/058,423 US11618034B2 (en) 2018-05-25 2019-05-27 Roller mill with a scraper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18174238.8A EP3572153B1 (en) 2018-05-25 2018-05-25 Roller mill with a scraper

Publications (2)

Publication Number Publication Date
EP3572153A1 EP3572153A1 (en) 2019-11-27
EP3572153B1 true EP3572153B1 (en) 2020-08-05

Family

ID=62386078

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18174238.8A Active EP3572153B1 (en) 2018-05-25 2018-05-25 Roller mill with a scraper

Country Status (12)

Country Link
US (1) US11618034B2 (en)
EP (1) EP3572153B1 (en)
JP (1) JP6980135B2 (en)
KR (1) KR102318276B1 (en)
CN (1) CN112423889A (en)
AU (1) AU2019272925B2 (en)
BR (1) BR112020023605B1 (en)
CA (1) CA3101384C (en)
ES (1) ES2823028T3 (en)
MX (1) MX2020012565A (en)
RU (1) RU2754044C1 (en)
WO (1) WO2019224395A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112403577A (en) * 2020-10-21 2021-02-26 衡阳市大宇锌业有限公司 Chemical production is with raw materials handling's antiseized material milling equipment
CN112659412B (en) * 2020-12-26 2023-08-29 安徽省腾越铝塑有限公司 Aluminum plastic fragment rolling separation device and method
CN113560015A (en) * 2021-07-30 2021-10-29 李祥兴 Grinder for medicine production
US20230129456A1 (en) * 2021-10-22 2023-04-27 Metso Outotec USA Inc. Roller crusher and method for operating thereof
US20230127300A1 (en) * 2021-10-22 2023-04-27 Metso Outotec USA Inc. Roller crusher and method for arrangement thereof
US11925942B2 (en) 2021-10-22 2024-03-12 Metso Outotec USA Inc. Roller crusher and method for operating thereof
US11938488B2 (en) * 2021-12-09 2024-03-26 Metso Outotec USA Inc. Roller crusher and method for operation thereof
CN114632597B (en) * 2022-03-17 2023-04-11 福建省南仹生物科技有限公司 Reducing mechanism is used in pig gall powder processing preparation
CH719888A1 (en) 2022-07-12 2024-01-31 Swisca Ag Roller mill and scraper for roller mill.

Family Cites Families (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US209829A (en) 1878-11-12 Improvement in roller-mills for reducing grain
US373408A (en) 1887-11-15 mawhood
US429381A (en) 1890-06-03 Adjustable scraper for roller-mills
BE527109A (en)
US328413A (en) 1885-10-13 William krutzsch
US801259A (en) 1903-05-02 1905-10-10 Friedrich Ernst Ferdinand Neumann Manufacture of cocoa paste.
US2124008A (en) 1936-10-05 1938-07-19 Firm Gebruder Buhler Roller brush for roller mills
US2125859A (en) 1936-10-19 1938-08-02 Day J H Co Scraper
SU87072A1 (en) * 1949-11-17 1949-11-30 Н.Ф. Рысь Roller Mill
BE544538A (en) * 1955-01-28
DE1054809B (en) 1956-07-13 1959-04-09 Simon Ltd Henry Roller mill
US2915421A (en) 1956-11-14 1959-12-01 William P Miller Doctor blade and control means therefor
US2929091A (en) 1958-08-04 1960-03-22 J M Lehmann Company Inc Knife blade holder ejector mechanism
US2991019A (en) 1958-08-22 1961-07-04 Simon Ltd Henry Combined material scraper and air current diverter for cereal grinding roller mills
NL269602A (en) 1960-09-27
US3130976A (en) * 1961-05-29 1964-04-28 Lockheed Aircraft Corp Elastomeric sealing bushing
US3567187A (en) 1968-12-20 1971-03-02 Texaco Inc Roll mill scraper blades
US3778861A (en) 1972-06-26 1973-12-18 Lodding Engineering Corp Bladeholders for doctors and scrapers
US4367120A (en) * 1980-03-13 1983-01-04 Vickerys Limited Doctor blade mounting assembly
EP0040432B1 (en) 1980-05-20 1984-03-21 Bühler AG Scraper blade for rollers, in particular for rollers of a roller mill used in milling
JPS6174653A (en) * 1984-09-19 1986-04-16 フロイント産業株式会社 Roll crushing apparatus
US4906335A (en) * 1987-06-08 1990-03-06 Thermo Electron Web System, Inc. Doctoring apparatus
DE3806651C2 (en) * 1988-03-02 1996-05-23 Buehler Ag Geb Rolling mill
RU2026739C1 (en) * 1990-03-21 1995-01-20 Всероссийский научно-исследовательский институт зерна и продуктов его переработки Roller mill
CN2088933U (en) * 1991-03-30 1991-11-20 李玉龙 Multicolour printing degvice for al foil combination machine
DE4320833C1 (en) 1993-06-23 1994-09-22 Roland Man Druckmasch Method and device for exchanging a doctor blade of a chamber-type doctor for rotary printing machines
DE4336708C2 (en) 1993-10-27 1998-07-02 Rieter Werke Haendle Swiveling device for moving two scrapers
EP0694374A3 (en) * 1994-07-29 1996-04-10 Haendle Gmbh & Co Kg Scraper for fine roll mill, milling raw materials for ceramic products
JP3506192B2 (en) 1995-05-15 2004-03-15 東洋紡績株式会社 Laminated filter media and method for producing the same
JP3379672B2 (en) * 1995-05-17 2003-02-24 株式会社サタケ Roll machine
KR100297777B1 (en) * 1998-06-26 2001-09-06 윤종용 Squeegee Roller Cleaning Device for Wet Printing Machine
FI4250U1 (en) 1998-09-02 1999-12-15 Valmet Corp Especially for a paper machine
FI105577B (en) * 1999-02-03 2000-09-15 Valmet Corp Paper machine scraper equipment
IT1307416B1 (en) * 1999-11-02 2001-11-06 Agrex Spa CYLINDER MILL FOR GRINDING GRANULAR MATERIALS, IN PARTICULAR OF CEREALS.
US6786999B2 (en) * 2001-04-18 2004-09-07 Kadant Web Systems, Inc. Doctor blade holder
JP2003323046A (en) * 2002-05-02 2003-11-14 Seiko Epson Corp Developing device and image forming apparatus using the same
SE526497C2 (en) 2003-12-30 2005-09-27 Akeboose Internat Ab Razor blade system, razor blade clamping device, chamber rocker system, printing plant, seduction for clamping a razor blade, and method for connecting a clamping part of a chamber razor
US20060225647A1 (en) * 2005-04-07 2006-10-12 Reid Robert A Doctor blade holder
CN201105916Y (en) * 2007-08-21 2008-08-27 山东圣泉化工股份有限公司 Roller scraper of resin pelleting machine
CN201644417U (en) * 2010-04-28 2010-11-24 首钢总公司 Scraper device for cleaning bonded foreign materials on surface of roller
CN201740389U (en) * 2010-08-10 2011-02-09 宝山钢铁股份有限公司 Material eliminator for round roller of sintering machine
CN201940343U (en) * 2010-12-09 2011-08-24 郑州卫华包装有限公司 Scraper regulating device for coating machine
CN201978782U (en) * 2011-01-21 2011-09-21 无锡博佑光电科技有限责任公司 Scraper device of mill roller grinding machine
CN202860620U (en) * 2012-09-06 2013-04-10 开封市茂盛机械有限公司 Surface cleaning device of grinding roller
CN102862245B (en) * 2012-10-16 2015-11-25 河南新艾卡橡胶工业有限公司 A kind of conche
EP3003057A1 (en) * 2013-05-31 2016-04-13 Bühler AG Stripping system
CN203508438U (en) * 2013-08-23 2014-04-02 首钢总公司 Scraper device
CN203972470U (en) * 2014-07-17 2014-12-03 武汉钢铁(集团)公司 A kind of roller-surface cleaning device
CN204134840U (en) * 2014-09-27 2015-02-04 胡金花 A kind of Frictioning device
CN107780287A (en) * 2016-08-31 2018-03-09 顾亚萍 A kind of doctor blade device of paper making equipment

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
AU2019272925B2 (en) 2021-11-04
AU2019272925A1 (en) 2020-12-17
KR20210005286A (en) 2021-01-13
ES2823028T3 (en) 2021-05-05
EP3572153A1 (en) 2019-11-27
RU2754044C1 (en) 2021-08-25
JP6980135B2 (en) 2021-12-15
US11618034B2 (en) 2023-04-04
JP2021514836A (en) 2021-06-17
WO2019224395A1 (en) 2019-11-28
KR102318276B1 (en) 2021-10-27
BR112020023605B1 (en) 2021-09-21
US20210213456A1 (en) 2021-07-15
BR112020023605A8 (en) 2021-08-17
MX2020012565A (en) 2021-10-26
CA3101384A1 (en) 2019-11-28
CN112423889A (en) 2021-02-26
CA3101384C (en) 2021-07-06
BR112020023605A2 (en) 2021-02-09

Similar Documents

Publication Publication Date Title
EP3572153B1 (en) Roller mill with a scraper
DE69307047T2 (en) Primary cleaner with knives for belts
DE2319736B2 (en) Stripping device for belt straps
WO2018127260A1 (en) Stripper system for belt conveyors and method for cleaning belt conveyors
DE112006001422T5 (en) Strip device and improved suction roll for a web machine and structure and method for improving the durability of the suction roll
DE7238495U (en) SCRAPER FOR CONVEYOR SYSTEMS
EP2531087A1 (en) Hand-held cleaning device for smooth surfaces
EP1607140A1 (en) Doctor blade bed
DE19603934C1 (en) Strip for scraping conveyed material from lower belt part of conveyor belt
DE102005013029A1 (en) Conveyor belt smut wiping device, has wiper which is swivelably arranged such that it deviates in running direction of reverse operation of conveyor belt, where wiper is detached from belt in deviating position
EP2832462B1 (en) Roll straightening machine with a collecting device
EP0395911B1 (en) Sealing assembly for an offset printing machine
EP2570194A1 (en) Squeegee metering system
EP2627819B1 (en) Device for holding doctor blades
EP3966139B1 (en) Method and device for cleaning a surface of a conveyor belt of residues of raw materials and cover material conveyed in mining
DE102020121122B4 (en) Washing roll holder for a washing bucket
DE10301230B4 (en) Scraper device for cleaning conveyor belts
DE202008010087U1 (en) scraper
DE102005046587A1 (en) wiper blade
DE10310316B4 (en) Arrangement for roller cleaning
DE2401207C2 (en) Device for the mechanical removal of solids that have accumulated in front of grate bars in a sewer
DE102006018525A1 (en) Squeegee device for color deck washing, has elastic squeegee cutter forming doctor blade, and supported with respect to color deck roller, so that blade is brought into mechanical contact with surface of color deck roller for cleaning
EP4008815A1 (en) Elastic cleaning lip, support element and cleaning device
DE102005015790B4 (en) Device for cleaning a roller of a printing machine
WO2024008467A1 (en) Scraper holder and scraping device

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20191211

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20200217

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1297950

Country of ref document: AT

Kind code of ref document: T

Effective date: 20200815

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502018002071

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20200805

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200805

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201105

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201105

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200805

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201106

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200805

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201207

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200805

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200805

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200805

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200805

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200805

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201205

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200805

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200805

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200805

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200805

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200805

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2823028

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20210505

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502018002071

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200805

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200805

26N No opposition filed

Effective date: 20210507

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210525

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200805

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20210531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210525

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210531

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230523

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200805

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20180525

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20230531

Year of fee payment: 6

Ref country code: FR

Payment date: 20230517

Year of fee payment: 6

Ref country code: ES

Payment date: 20230621

Year of fee payment: 6

Ref country code: DE

Payment date: 20230519

Year of fee payment: 6

Ref country code: CH

Payment date: 20230602

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: TR

Payment date: 20230522

Year of fee payment: 6

Ref country code: AT

Payment date: 20230516

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200805

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20230522

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200805