EP0071906A2 - Household grain-mill - Google Patents

Household grain-mill Download PDF

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Publication number
EP0071906A2
EP0071906A2 EP82106899A EP82106899A EP0071906A2 EP 0071906 A2 EP0071906 A2 EP 0071906A2 EP 82106899 A EP82106899 A EP 82106899A EP 82106899 A EP82106899 A EP 82106899A EP 0071906 A2 EP0071906 A2 EP 0071906A2
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EP
European Patent Office
Prior art keywords
grinding
mill according
grinding stone
mill
stones
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Granted
Application number
EP82106899A
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German (de)
French (fr)
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EP0071906B1 (en
EP0071906A3 (en
Inventor
Hilmar A. Dr.-Ing. Burggrabe
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BURGGRABE HILMAR A DR ING
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BURGGRABE HILMAR A DR ING
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Priority to AT82106899T priority Critical patent/ATE22233T1/en
Publication of EP0071906A2 publication Critical patent/EP0071906A2/en
Publication of EP0071906A3 publication Critical patent/EP0071906A3/en
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Publication of EP0071906B1 publication Critical patent/EP0071906B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C7/00—Crushing or disintegrating by disc mills
    • B02C7/11—Details
    • B02C7/12—Shape or construction of discs
    • B02C7/13—Shape or construction of discs for grain mills

Definitions

  • the invention relates to a household flour mill with two ring-shaped grinding stones, of which at least one is connected in a rotationally fixed manner to a drive shaft and has a plurality of depressions which are evenly distributed around the shaft axis and are referred to in the mill construction as boundaries, the depth of which decreases radially outwards and which decreases through the central one Break through the breakthrough of a grinding stone of axially supplied cereal grains and insert them into a grinding zone which is formed by parallel, radially outer annular surfaces of the two grinding stones, which run perpendicular to the shaft axis around the borders.
  • Grinders with grinding stones of the type mentioned are known.
  • the grinders of well-known household grain mills have the Disadvantage that only relatively dry and low-fat cereal grains can be ground with a satisfactory result.
  • the invention is therefore based on the object of creating a household flour mill which grinds grain well, regardless of its moisture and fat content, and does not require a high-speed drive.
  • This object is achieved in that the depressions have an asymmetrical cross-sectional profile with two flanks, one of which flank, which precedes the other in the relative rotation of the grindstone, is steeper than the other flatter flank and with the flatter flank of the leading depression forms an edge that runs tangentially to the circumference of the opening of the millstone.
  • both grinding stones are arranged one above the other coaxially to a vertical axis and the upper grinding stone is provided with the central opening, so that the centrifugal forces during grinding can act undisturbed by gravity.
  • one of the two grinding stones is axially displaceable and spring-mounted, so that the minimum distance between the two grinding stones, which can be set in any known manner, automatically increases if the material to be ground contains, for example, stones that are larger than the cereal grains to be ground. In such a case, the grinder cannot be damaged.
  • the minimum distance mentioned limits the heat development during grinding and thus helps to gently process the ground material.
  • the mill mainly consists of a drive 5, which comprises an electric motor and a toothed belt transmission within a housing, a grinder 6 in the preferred embodiment, a funnel 7 for filling in the ground material and a flour outlet 8.
  • the grinder 6 has a stationary axis 10 with a vertical longitudinal axis 12, which carries two hubs 14 and 16 of a lower grinding stone 18 or upper grinding stone 20.
  • the hub 14 of the rotatable grinding stone 18 is seated in a rotationally fixed manner on a hollow drive shaft 21 which coaxially receives the axis 10, while the hub 16 of the quasi-stationary grinding stone 20 is mounted on the axis 10 for the purpose of centering.
  • the upper axis 10 with a vertical longitudinal axis 12, which carries two hubs 14 and 16 of a lower grinding stone 18 or upper grinding stone 20.
  • the hub 14 of the rotatable grinding stone 18 is seated in a rotationally fixed manner on a hollow drive shaft 21 which coaxially receives the axis 10, while the hub 16 of the quasi-stationary grinding stone 20 is mounted on the axis 10 for the purpose of centering.
  • the upper axis 10 with a vertical longitudinal axis 12, which carries two hubs 14 and 16 of a lower grinding stone 18
  • Hub 16 is pierced so that cereal grains can get out of the funnel 7 between the two grinding stones 18 and 20.
  • the lower hub is open after screws 22 have been inserted, so that grain kernels cannot fall through.
  • the width of the gap 24 between the two grinding stones 18 and 20 can be changed in accordance with the grain size by axially adjusting the upper grinding stone 20 which is rotatably mounted for this purpose.
  • the lower grinding stone 18 is axially displaceable and supported by a spring 26 which limits the axial grinding pressure at the top.
  • the lower grinding stone 18 shown in FIG. 2 with its hub 14 is largely circular-ring-shaped and consists of finely crystallized primary rock emery bonded with fired magnesite rock.
  • the lower grindstone 18 On its upper side facing the upper grindstone 20, the lower grindstone 18 is provided with five boundaries 28 evenly distributed around the shaft axis 12, the depth of which decreases radially outward and which are surrounded by a radially outer ring surface 30 which is perpendicular to the shaft axis 12 punctured level.
  • Each of the identically designed steps 28 has an asymmetrical cross-sectional profile (see FIG.
  • the trailing flank 36 of a preceding flank 28 at the leading flank 34 of the following boundary 28 ends along an edge 38, the axial projection of which on a plane perpendicularly penetrated by the shaft axis 12, for example the plane of the annular surface 30, extends tangentially to the radially inner circumference of the grinding stone 18 and the forward and trailing flanks 34 and 36 of the boundaries 28 are arranged partly in and partly below a concave conical surface, the cone axis of which is the shaft axis 12, and end radially inwardly on a flat ring edge 40.
  • the upper limit of the top of the grinding stone 18 due to the aforementioned conical surface is due to the fact that a conical turning takes place during the manufacture of the pressing tool for the grinding stone.
  • the trailing, flatter flanks 36 of the borders 28 have approximately the shape of circular sectors which form a fan around the hub 14.
  • the upper millstone 20 is designed exactly like the lower millstone 18 described, although it could be configured differently, for example with azimuthally shortened flanks 36 and without breaking the edge 38 on the inner circumference of the millstone.
  • both grinding stones can be driven at different speeds in a common direction of rotation.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Disintegrating Or Milling (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

A household grain mill includes a mill in which the grinding surfaces of the millstones (18, 20) are provided with recesses (28) which extend from the inside toward the outside with decreasing depth and which crack grain fed through a central opening and lead it to an outer grinding zone. The recesses (28) have an asymmetrical cross-sectional shape with two flanks (34, 36), of which the leading flank (34) is steeper than the trailing flank (36) and, together with the flatter flank (36) of the preceeding recess (28), forms an edge (38) which runs tangentially to the periphery of the central opening.

Description

Die Erfindung betrifft eine Haushalts-Getreidemühle mit zwei ringförmigen Mahlsteinen, von denen mindestens einer mit einer Antriebswelle drehfest verbunden ist und mehrere gleichmäßig um die Wellenachse verteilte, im Mühlenbau als Schrenzen bezeichnete Vertiefungen aufweist, deren Tiefe radial nach außen abnimmt und welche die durch den zentralen Durchbruch eines Mahlsteines axial zugeführten Getreidekörner vorbrechen sowie in eine Mahlzone einführen, die durch parallele, radial äußere Ringflächen der beiden Mahlsteine gebildet ist, welche senkrecht zur Wellenachse um die Schrenzen herum verlaufen.The invention relates to a household flour mill with two ring-shaped grinding stones, of which at least one is connected in a rotationally fixed manner to a drive shaft and has a plurality of depressions which are evenly distributed around the shaft axis and are referred to in the mill construction as boundaries, the depth of which decreases radially outwards and which decreases through the central one Break through the breakthrough of a grinding stone of axially supplied cereal grains and insert them into a grinding zone which is formed by parallel, radially outer annular surfaces of the two grinding stones, which run perpendicular to the shaft axis around the borders.

Mahlwerke mit Mahlsteinen der genannten Art sind bekannt. Die Mahlwerke bekannter Haushalts-Getreidemühlen haben den Nachteil, daß nur verhältnismäßig trockene und fettarme Getreidekörner mit zufriedenstellendem Ergebnis gemahlen werden können.Grinders with grinding stones of the type mentioned are known. The grinders of well-known household grain mills have the Disadvantage that only relatively dry and low-fat cereal grains can be ground with a satisfactory result.

Der Erfindung liegt daher die Aufgabe zu Grunde, eine Haushalts-Getreidemühle zu schaffen, welche Getreidekörner unabhängig von ihrer Feuchtigkeit und ihrem Fettgehalt bestens mahlt und dazu keinen hochtourigen Antrieb erfordert. Diese Aufgabe ist erfindungsgemäß dadurch gelöst, daß die Vertiefungen ein asymmetrisches Querschnittsprofil mit zwei Flanken aufweisen, von denen die eine Flanke, die bei der Relativdrehung des Mahlsteines gegenüber der anderen vorausläuft, steiler ist als die andere flachere Flanke und mit der flacheren Flanke der vorauslaufenden Vertiefung eine Kante bildet, die tangential zum Umfang des Durchbruches des einen Mahlsteines verläuft.The invention is therefore based on the object of creating a household flour mill which grinds grain well, regardless of its moisture and fat content, and does not require a high-speed drive. This object is achieved in that the depressions have an asymmetrical cross-sectional profile with two flanks, one of which flank, which precedes the other in the relative rotation of the grindstone, is steeper than the other flatter flank and with the flatter flank of the leading depression forms an edge that runs tangentially to the circumference of the opening of the millstone.

Dadurch wird vorteilhafterweise erreicht, daß sich mit der erfindungsgemäßen Mühle bei geringer Drehzahl der Antriebswelle auch feuchte und fetthaltige Getreidekörner sehr gut mahlen lassen, wie Versuche mit dem Ausführungsbeispiel gezeigt haben.It is thereby advantageously achieved that, with the mill according to the invention, even moist and fat-containing cereal grains can be ground very well at a low speed of the drive shaft, as tests with the exemplary embodiment have shown.

Bei einer bevorzugten Ausführungsform der erfindungsgemäßen Mühle sind beide Mahlsteine koaxial zu einer vertikalen Achse übereinander angeordnet und der obere Mahlstein ist mit dem zentralen Durchbruch versehen, so daß die Zentrifugalkräfte beim Mahlen von der Schwerkraft ungestört wirksam werden können.In a preferred embodiment of the mill according to the invention, both grinding stones are arranged one above the other coaxially to a vertical axis and the upper grinding stone is provided with the central opening, so that the centrifugal forces during grinding can act undisturbed by gravity.

Bei der bevorzugten Ausführungsform ist einer der beiden Mahlsteine axial verschiebbar und gefedert gelagert, damit sich der auf irgend eine bekannte Weise einstellbare Mindestabstand der beiden Mahlsteine voneinander automatisch vergrößert, wenn das Mahlgut beispielsweise Steinchen enthält, die größer sind als die zu mahlenden Getreidekörner. Das Mahlwerk kann in einem solchen Fall keinen Schaden nehmen. Der erwähnte Mindestabstand begrenzt die Wärmeentwicklung beim Mahlen und verhilft dadurch zu schonender Bearbeitung des Mahlgutes.In the preferred embodiment, one of the two grinding stones is axially displaceable and spring-mounted, so that the minimum distance between the two grinding stones, which can be set in any known manner, automatically increases if the material to be ground contains, for example, stones that are larger than the cereal grains to be ground. In such a case, the grinder cannot be damaged. The minimum distance mentioned limits the heat development during grinding and thus helps to gently process the ground material.

Im folgenden ist die Erfindung an Hand der durch die Zeichnung beispielhaft dargestellten, bevorzugten Ausführungsform des erfindungsgemäßen Mahlwerkes im einzelnen erläutert.The invention is explained in detail below with reference to the preferred embodiment of the grinder according to the invention which is shown by way of example in the drawing.

Es zeigt:

  • Fig. 1 einen zentralen Vertikalschnitt durch eine Haushalts-Getreidemühle mit der Ausführungsform;
  • Fig. 2 eine perspektivische Ansicht eines Mahlsteines der Ausführungsform, wobei die Punktierung Darstellungsmittel ist und nichts über die Rauhigkeit des Steines aussagt; und
  • Fig. 3 die Abwicklung eines Schnittes längs der Kreislinie, die in Fig. 1 durch ihren Kreisbogen III - III teilweise dargestellt ist.
It shows:
  • 1 shows a central vertical section through a household flour mill with the embodiment.
  • Fig. 2 is a perspective view of a grindstone of the embodiment, wherein the dotting is a means of representation and says nothing about the roughness of the stone; and
  • Fig. 3 shows the development of a section along the circular line, which is partially shown in Fig. 1 by its circular arc III - III.

Die Mühle besteht hauptsächlich aus einem Antrieb 5, der innerhalb eines Gehäuses einen Elektromotor und ein Zahnriemengetriebe umfaßt, aus einem Mahlwerk 6 in der bevorzugten Ausführungsform, aus einem Trichter 7 zum Einfüllen des Mahlgutes und aus einem Mehl-Auslauf 8.The mill mainly consists of a drive 5, which comprises an electric motor and a toothed belt transmission within a housing, a grinder 6 in the preferred embodiment, a funnel 7 for filling in the ground material and a flour outlet 8.

Das Mahlwerk 6 weist eine stillstehende Achse 10 mit vertikaler Längsachse 12 auf, welche zwei Naben 14 und 16 eines unteren Mahlsteines 18 bzw. oberen Mahlsteines 20 trägt. Die Nabe 14 des drehbaren Mahlsteines 18 sitzt drehfest auf einer die Achse 10 koaxial aufnehmenden hohlen Antriebswelle 21, während die Nabe 16 des quasi-stationären Mahlsteines 20 zwecks Zentrierung auf der Achse 10 gelagert ist. Die obereThe grinder 6 has a stationary axis 10 with a vertical longitudinal axis 12, which carries two hubs 14 and 16 of a lower grinding stone 18 or upper grinding stone 20. The hub 14 of the rotatable grinding stone 18 is seated in a rotationally fixed manner on a hollow drive shaft 21 which coaxially receives the axis 10, while the hub 16 of the quasi-stationary grinding stone 20 is mounted on the axis 10 for the purpose of centering. The upper

Nabe 16 ist durchbrochen, damit Getreidekörner aus dem Trichter 7 zwischen die beiden Mahlsteine 18 und 20 gelangen können. Dagegen ist die untere Nabe nach Einsetzen von Schrauben 22 undurchbrochen, damit Getreidekörner nicht durchfallen können.Hub 16 is pierced so that cereal grains can get out of the funnel 7 between the two grinding stones 18 and 20. On the other hand, the lower hub is open after screws 22 have been inserted, so that grain kernels cannot fall through.

Der Spalt 24 zwischen den beiden Mahlsteinen 18 und 20 kann durch axiale Verstellung des dazu drehbar gelagerten oberen Mahlsteines 20 in seiner Breite entsprechend der Korngröße verändert werden. Der untere Mahlstein 18 ist axial verschiebbar und mittels einer Feder 26 gelagert, die den axialen Mahldruck oben begrenzt.The width of the gap 24 between the two grinding stones 18 and 20 can be changed in accordance with the grain size by axially adjusting the upper grinding stone 20 which is rotatably mounted for this purpose. The lower grinding stone 18 is axially displaceable and supported by a spring 26 which limits the axial grinding pressure at the top.

Der in Fig. 2 mit seiner Nabe 14 gezeigte untere Mahlstein 18 ist im großen und ganzen kreisscheibenringförmig und besteht aus feinkristallisiertem, mit gebranntem Magnesit-Gestein gebundenem Urgestein-Schmirgel. Auf seiner dem oberen Mahlstein 20 zugekehrten Oberseite ist der untere Mahlstein 18 mit fünf gleichmäßig um die Wellenachse 12 verteilten Schrenzen 28 versehen, deren Tiefe radial nach außen abnimmt und die von einer radial äußeren Ringfläche 30 umgeben sind, die in einer von der Wellenachse 12 senkrecht durchstoßenen Ebene liegt. Jede der gleich ausgebildeten Schrenzen 28 weist ein am Grund 32 gerundetes asymmetrisches Querschnittsprofil (siehe Fig. 3) mit einer in Drehrichtung 9 der Antriebswelle 10 vorauslaufenden steileren Flanke 34 und mit einer nachlaufenden flacheren Flanke 36 auf, wobei die nachlaufende Flanke 36 einer vorausgehenden Schrenze 28 an der vorauslaufenden Flanke 34 der folgenden Schrenze 28 längs einer Kante 38 endet, deren axiale Projektion auf eine von der Wellenachse 12 senkrecht durchstoßene Ebene, beispielsweise die Ebene der Ringfläche 30, tangential zum radial inneren Umfang des Mahlsteines 18 verläuft und wobei die vor- und nachlaufenden Flanken 34 bzw. 36 der Schrenzen 28 teils in- und teils unterhalb einer konkaven Kegelfläche angeordnet sind, deren Kegelachse die Wellenachse 12 ist, und radial innen an einer ebenen Ringkante 40 enden. Die obere Begrenzung der Oberseite des Mahlsteines 18 durch die erwähnte Kegelfläche kommt dadurch zustande, daß bei der Herstellung des Preßwerkzeuges für den Mahlstein eine konische Abdrehung erfolgt. Wie Fig. 2 zeigt, haben die nachlaufenden flacheren Flanken 36 der Schrenzen 28 ungefähr die Gestalt von Kreissektoren, die um die Nabe 14 einen Fächer bilden.The lower grinding stone 18 shown in FIG. 2 with its hub 14 is largely circular-ring-shaped and consists of finely crystallized primary rock emery bonded with fired magnesite rock. On its upper side facing the upper grindstone 20, the lower grindstone 18 is provided with five boundaries 28 evenly distributed around the shaft axis 12, the depth of which decreases radially outward and which are surrounded by a radially outer ring surface 30 which is perpendicular to the shaft axis 12 punctured level. Each of the identically designed steps 28 has an asymmetrical cross-sectional profile (see FIG. 3) rounded at the base 32 with a steeper flank 34 leading in the direction of rotation 9 of the drive shaft 10 and with a trailing flatter flank 36, the trailing flank 36 of a preceding flank 28 at the leading flank 34 of the following boundary 28 ends along an edge 38, the axial projection of which on a plane perpendicularly penetrated by the shaft axis 12, for example the plane of the annular surface 30, extends tangentially to the radially inner circumference of the grinding stone 18 and the forward and trailing flanks 34 and 36 of the boundaries 28 are arranged partly in and partly below a concave conical surface, the cone axis of which is the shaft axis 12, and end radially inwardly on a flat ring edge 40. The upper limit of the top of the grinding stone 18 due to the aforementioned conical surface is due to the fact that a conical turning takes place during the manufacture of the pressing tool for the grinding stone. As FIG. 2 shows, the trailing, flatter flanks 36 of the borders 28 have approximately the shape of circular sectors which form a fan around the hub 14.

Der obere Mahlstein 20 ist genau wie der beschriebene untere Mahlstein 18 ausgebildet, obwohl er anders ausgestaltet sein könnte, beispielsweise mit azimutal verkürzten Flanken 36 und ohne Brechung der Kante 38 am inneren Umfang des Mahlsteines.The upper millstone 20 is designed exactly like the lower millstone 18 described, although it could be configured differently, for example with azimuthally shortened flanks 36 and without breaking the edge 38 on the inner circumference of the millstone.

Die einander am Spalt 24 parallel gegenüberstehenden zwei Ringflächen 30 der beiden Mahlsteine 18 und 20 bilden eine Mahlzone, in welche die durch die Nabe 16 auf die Nabe 14 gefallenen Getreidekörner nach Vorbrechung durch die Schrenzen 28 unter dem Einfluß von Trägheits-und Reibungskräften gelangen.The two annular surfaces 30 of the two grinding stones 18 and 20, which face each other in parallel at the gap 24, form a grinding zone into which the grain kernels which have fallen onto the hub 14 through the hub 16 enter after being broken by the steps 28 under the influence of inertia and frictional forces.

Um die Zentrifugalkraft beim Mahlen zu vergrößern, können beide Mahlsteine mit verschiedenen Umlaufgeschwindigkeiten in einer gemeinsamen Drehrichtung antreibbar sein.In order to increase the centrifugal force during grinding, both grinding stones can be driven at different speeds in a common direction of rotation.

Claims (8)

1. Haushalts-Getreidemühle mit zwei ringförmigen Mahlsteinen (18, 20), die koaxial mit einander zugekehrten Mahlflächen angeordnet sind und von denen mindestens einer (18) um die gemeinsame Achse relativ zum anderen drehbar gelagert ist, wobei mindestens die Mahlfläche eines Mahlsteines (18, 20) mehrere gleichmäßig um ihre Achse verteilte Vertiefungen (28) aufweist, die sich mit abnehmender Tiefe nach außen erstrecken, um durch den zentralen Durchbruch eines Mahlsteines (20) zugeführte Getreidekörner vorzubrechen und in eine äußere Mahlzone einzuführen, die durch einander parallele äußere Ringflächen (30) beider Mahlsteine (18, 20) gebildet ist, die um die Vertiefungen (28) herum verlaufen, dadurch gekennzeichnet, daß die Vertiefungen (28) ein asymmetrisches Querschnittsprofil mit zwei Flanken (34, 36) aufweisen, von denen die eine Flanke (34), die bei der Relativdrehung des Mahlsteines (18) gegenüber der anderen (20) vorausläuft, steiler ist als die andere flachere Flanke (36) und mit der flacheren Flanke (36) der vorauslaufenden Vertiefung (28) eine Kante (38) bildet, die tangential zum Umfang (40) des Durchbruches des einen Mahlsteines (20) verläuft.1. Household grain mill with two annular grinding stones (18, 20) which are arranged coaxially with mutually facing grinding surfaces and of which at least one (18) is rotatably mounted about the common axis relative to the other, at least the grinding surface of a grinding stone (18 , 20) has a plurality of recesses (28) distributed uniformly about their axis, which extend outwardly with decreasing depth in order to break up grain grains supplied through the central opening of a grinding stone (20) and to introduce them into an outer grinding zone, which through mutually parallel outer ring surfaces (30) of both grinding stones (18, 20) is formed, which run around the depressions (28), characterized in that the depressions (28) have an asymmetrical cross-sectional profile with two flanks (34, 36), one of which flank (34), which runs ahead of the other (20) during the relative rotation of the millstone (18), is steeper than the other flatter flank (36) and with the flatter flank (36) of the leading depression (28) forms an edge (38) which extends tangentially to the circumference (40) of the opening of the millstone (20). 2. Mühle nach Anspruch 1, dadurch gekennzeichnet, daß zum Einführen der Körner in die Vertiefungen (28) die Mahlfläche mindestens eines Mahlsteines (18, 20) in ihrem zentralen Bereich eine den Durchbruch des einen Mahlsteines umfassende konkave Kegelstumpffläche aufweist, die an einer radial inneren ebenen Ringkante (40) endet.2. Mill according to claim 1, characterized in that for introducing the grains into the recesses (28) the grinding surface of at least one grinding stone (18, 20) in its central region has a breakthrough of a grinding stone comprising a concave truncated cone surface, which is on a radial inner flat ring edge (40) ends. 3. Mühle nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß beide Flanken (34 und 36) einer Vertiefung über einen gerundeten Grund (32) ineinander übergehen.3. Mill according to claim 1 or 2, characterized in that both flanks (34 and 36) of a recess merge into one another via a rounded base (32). 4. Mühle nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß beide Mahlsteine koaxial zu einer vertikalen Achse (12) übereinander angeordnet sind und der obere Mahlstein (20) mit dem zentralen Durchbruch versehen ist.4. Mill according to one of claims 1 to 3, characterized in that the two grinding stones are arranged coaxially to a vertical axis (12) one above the other and the upper grinding stone (20) is provided with the central opening. 5. Mühle nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß einer (18) der beiden Mahlsteine (18,20) axial verschiebbar und gefedert (26) gelagert ist.5. Mill according to one of claims 1 to 4, characterized in that one (18) of the two grinding stones (18, 20) is axially displaceable and spring-loaded (26). 6. Mühle nach Anspruch 4 und 5, dadurch gekennzeichnet, daß beide Mahlsteine (18, 20) gleich ausgebildet sind, daß der untere Mahlstein (18) drehfest mit einer seinen zentralen Durchbruch verschließenden Nabe (14) verbunden ist, die drehfest aber axial gegen die Kraft einer Feder (26) vom anderen Mahlstein (20) weg verschiebbar mit einer Antriebswelle (10) verbunden ist.6. Mill according to claim 4 and 5, characterized in that both grindstones (18, 20) are of identical design, that the lower grindstone (18) is rotatably connected to a hub closing its central opening (14) which is rotationally fixed but axially against the force of a spring (26) is displaceably connected to a drive shaft (10) away from the other grinding stone (20). 7. Mühle nach Anspruch 6, dadurch gekennzeichnet, daß der obere Mahlstein (20) drehfest aber axial ver- und feststellbar gelagert ist.7. Mill according to claim 6, characterized in that the upper grinding stone (20) is rotatably but axially adjustable and lockable. 8. Mühle nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß beide Mahlsteine (18, 20) mit verschiedenen Umlaufgeschwindigkeiten in einer gemeinsamen Drehrichtung antreibbar sind.8. Mill according to one of claims 1 to 6, characterized in that both grinding stones (18, 20) can be driven at different speeds in a common direction of rotation.
EP82106899A 1981-08-01 1982-07-30 Household grain-mill Expired EP0071906B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82106899T ATE22233T1 (en) 1981-08-01 1982-07-30 HOUSEHOLD GRAIN MILL.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3130519 1981-08-01
DE19813130519 DE3130519A1 (en) 1981-08-01 1981-08-01 GRINDING A HOUSEHOLD CEREAL MILL

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EP0071906A2 true EP0071906A2 (en) 1983-02-16
EP0071906A3 EP0071906A3 (en) 1983-10-26
EP0071906B1 EP0071906B1 (en) 1986-09-17

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EP82106899A Expired EP0071906B1 (en) 1981-08-01 1982-07-30 Household grain-mill

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US (1) US4502643A (en)
EP (1) EP0071906B1 (en)
AT (1) ATE22233T1 (en)
DE (2) DE3130519A1 (en)

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DE3503010A1 (en) * 1985-01-30 1986-07-31 Reiff, Peter, 7614 Gengenbach Grain mill, in particular for domestic use
DE3541389A1 (en) * 1985-11-22 1987-05-27 Planeta Hausgeraete Kitchen machine for the mechanical comminution of foods

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EP0821617B1 (en) * 1995-04-21 2006-03-22 Watson Brown HSM Ltd. Mixing
FI98148C (en) * 1995-06-02 1997-04-25 Tomas Bjoerkqvist Method and apparatus for mechanical defibering of wood
US5673862C1 (en) * 1996-04-09 2001-11-06 New River Mills L L C Grain mill
ITFI20060281A1 (en) * 2006-11-14 2008-05-15 Saeco Ipr Ltd GRINDING ORGANS FOR A COFFEE MILL DEVICE AND A COFFEE MACHINE INCLUDING SUCH A DEVICE.
US7874505B1 (en) * 2007-08-31 2011-01-25 Food Equipment Technologies Company, Inc. Food grinder with electronically adjustable grind settings, tooless disassembly
DE102009047818A1 (en) * 2009-09-30 2011-04-07 Gharagozlu, Parviz, Bucalemu Method and device for comminuting ore material
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EP0122402A3 (en) * 1983-02-23 1986-11-12 Heinrich Gerk Grist mill
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Also Published As

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DE3273354D1 (en) 1986-10-23
DE3130519A1 (en) 1983-02-17
US4502643A (en) 1985-03-05
ATE22233T1 (en) 1986-10-15
EP0071906B1 (en) 1986-09-17
EP0071906A3 (en) 1983-10-26

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