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EP1000662A1 - Apparatus for polishing grains, especially rice - Google Patents

Apparatus for polishing grains, especially rice Download PDF

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Publication number
EP1000662A1
EP1000662A1 EP98710016A EP98710016A EP1000662A1 EP 1000662 A1 EP1000662 A1 EP 1000662A1 EP 98710016 A EP98710016 A EP 98710016A EP 98710016 A EP98710016 A EP 98710016A EP 1000662 A1 EP1000662 A1 EP 1000662A1
Authority
EP
European Patent Office
Prior art keywords
rotor
jacket
machine according
conveyor
annular space
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.)
Granted
Application number
EP98710016A
Other languages
German (de)
French (fr)
Other versions
EP1000662B1 (en
Inventor
Joachim Behrmann
Rolf Suhrbier
Michael Postel
Thomas Dr. Strandt
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.)
Fh Schule Muehlenbau GmbH
F H SCHULE MUEHLENBAU GmbH
Fh Schule Muehlenbau GmbH
Original Assignee
Fh Schule Muehlenbau GmbH
F H SCHULE MUEHLENBAU GmbH
Fh Schule Muehlenbau GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fh Schule Muehlenbau GmbH, F H SCHULE MUEHLENBAU GmbH, Fh Schule Muehlenbau GmbH filed Critical Fh Schule Muehlenbau GmbH
Priority to ES98710016T priority Critical patent/ES2163245T3/en
Priority to DE59801402T priority patent/DE59801402D1/en
Priority to EP98710016A priority patent/EP1000662B1/en
Priority to BR9901307-0A priority patent/BR9901307A/en
Priority to TW088106834A priority patent/TW500633B/en
Priority to US09/304,794 priority patent/US6193179B1/en
Publication of EP1000662A1 publication Critical patent/EP1000662A1/en
Application granted granted Critical
Publication of EP1000662B1 publication Critical patent/EP1000662B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02B—PREPARING GRAIN FOR MILLING; REFINING GRANULAR FRUIT TO COMMERCIAL PRODUCTS BY WORKING THE SURFACE
    • B02B3/00—Hulling; Husking; Decorticating; Polishing; Removing the awns; Degerming
    • B02B3/04—Hulling; Husking; Decorticating; Polishing; Removing the awns; Degerming by means of rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02B—PREPARING GRAIN FOR MILLING; REFINING GRANULAR FRUIT TO COMMERCIAL PRODUCTS BY WORKING THE SURFACE
    • B02B3/00—Hulling; Husking; Decorticating; Polishing; Removing the awns; Degerming

Definitions

  • the invention relates to a machine for grinding of cereals, especially rice, of the known type heard in which the material to be ground is an annular space passes through, the outside of a coat and the inside of a grinding rotor is limited.
  • the coat contains holes or slots through which the grinding dust can escape.
  • the Material to be ground is fed to the annular space at one end and led away from him at the other end.
  • a known Machines of this type EP-B-521 452
  • EP-B-521 452 are the jacket and the Rotor cylindrical and arranged vertically.
  • the annular space at the lower end is made good by a screw conveyor forcibly fed.
  • the treated one occurs at the upper end Well clear from the annulus.
  • the filling of the annulus is countered by the direction of conveyance Gravity guaranteed.
  • This arrangement has the disadvantage that the grinding conditions are not optimally adjusted can.
  • the associated with the gradual wear of the rotor May increase the radial width of the annulus not be balanced. An adjustment of the process parameters
  • Machines are also known (obvious prior use), whose annular space is conical.
  • the overhead large-diameter end, the material is fed by gravity.
  • the lower, small-diameter end is open.
  • a complete filling of the work space, which is a requirement for high performance cannot be achieved.
  • This The disadvantage of being adjustable is not a disadvantage either the annulus width weighed. Because when trying that Increase performance by reducing the annulus width, the working temperature is too high. Better properties do not result even if the cone arrangement is reversed. From sophisticated manufacturers therefore nowadays only machines with cylindrical working space offered.
  • the invention is based, with good adjustability the task the process parameters to different goods low fraction, low temperature and high performance to achieve. This is achieved through the features of the claim 1 and preferably the features of the subclaims.
  • the machine is characterized in that the end small diameter of the conical annulus arranged above is.
  • the radial width of the annulus is through axial adjustment of the rotor adjustable.
  • a positive conveyor is provided for the supply of goods.
  • the lower End is by a resiliently evasive closure member locked.
  • the closure member provided at the lower end is expedient formed by a truncated cone valve disc, which is referred to below as a counter pressure plate. His Closure force is generated by springs. Different from one weight-loaded counter pressure plate can be the mass the parts to be moved by the material being pushed out are kept low be so that it quickly changes to throughput ratios can react.
  • the positive conveyor is conveniently from one with the Rotor rotatably connected screw conveyor, formed above the a storage room that widens towards the top is.
  • the expansion of this store room can be accomplished be that on the rotor or the worm a cone is put on.
  • Rotor uses the air supply openings distributed over its length having. Furthermore, the work space - as well known - with essentially extending in the longitudinal direction Brake strips can be provided that are radially adjustable are to adjust the process parameters even more finely can.
  • the cone angle of the shell and the rotor is expedient in the range between 4 and 10 °.
  • the base plate 1 which as a box (not shown) for Recording of additional units can be formed, raises the basic housing 2 of the rice grinding machine.
  • the base plate 1 which as a box (not shown) for Recording of additional units can be formed, raises the basic housing 2 of the rice grinding machine.
  • the base plate 4 On it attached at 3 the lower edge of the conical jacket 4, the is formed by a sheet metal part, the regular holes or Contains slots in a known manner, the width of which is smaller than the size of the grains of rice.
  • the cylindrical rises above it Head housing 5, 6.
  • the base housing or the box forming the base plate 1 is in a known, not shown manner Bearing and a drive for the rotor shaft 7 arranged, the extends coaxially in the jacket 4 and with a series of Slip rings forms the rotor 8.
  • the slip rings form together the tapered surface of the rotor, parallel, d. H. with constant radial distance to the jacket 4.
  • the columns 9 a strong air flow is blown into the annular space 11. This annular space 11 forms the working space of the machine.
  • They are devices (not shown) for axial adjustment of the rotor 8 opposite the jacket 4 provided it allow the radial width of the work space 11 depending on the type adjust the treated material and the degree of wear of the rotor 8.
  • the jacket 4 is surrounded by a housing 12 which with the Sheath 4 encloses a room 13. It becomes a powerful one Airflow creates the grinding dust that goes through the openings in the jacket 4 passes from the work room 11 into the room 13, dissipates.
  • the jacket 4 contains, in the direction of the jacket lines, in a common plane with the axis of the rotor shaft 7 lying slots in which there are brake strips 14, the radial by adjusting screws 15 more or less can be inserted into the annular space 11 to the circular movement inhibit the abrasive in an adjustable manner.
  • four such brake strips are around the circumference arranged.
  • the rotor shaft 7 carries a screw conveyor 21 with winding turns, the material to be ground from the space 22 arranged above during the rotor movement forcibly promoted into the work room 11.
  • room 22 flows the material of the inlet opening of the screw conveyor 21 under its own weight, going through the wall of the head housing and by one placed on the conveyor 21 Cone 23 is guided. This rotates with the rotor. The causes movement transferred to the pending good, that this always flows evenly to the inlet side of the conveyor.
  • the head housing part 6 forms a flange 24 for connecting a supply line, if necessary with inclusion a shut-off or throttling device.
  • the rotor 8 is bottom by an inner cylindrical collar 30 completed by an outer cylindrical Collar 31 of the base housing enclosed and down is towered over.
  • an outer cylindrical Collar 31 of the base housing enclosed and down is towered over.
  • the lower edge of the outer collar 31 acts together with a frustoconical sheet metal ring 32, the by springs 33 distributed over the circumference upwards against the lower edge of the outer collar 31 is pulled.
  • the tin ring 32 forms the counter pressure plate, which is the lower end of the Working space 11 closes and by the pressure of the between against the cylindrical collar 30, 31 pushing out goods the force of the springs 33 is increased to the good in the subsequent Dismiss room 34 of the base case. From there the goods can flow out or be conveyed out.
  • the inner collar 30 does not need to reach the counter pressure plate to submit. This is also generally not desirable thus sufficient spatial freedom for the axial Adjustment of the rotor in relation to the jacket 4 is available is.
  • Guide arms 35 can be connected to the counter-pressure plate 32 with the rotor shaft 7, the inner collar 30 or any other part of the machine for axial guidance of the counter pressure plate 32 cooperate.
  • the cone angle of the shell 4 and the rotor 8, i.e. H. the Angle between diametrically opposed surface lines these parts are expediently of the order of magnitude of 6 °.

Landscapes

  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Adjustment And Processing Of Grains (AREA)
  • Cereal-Derived Products (AREA)

Abstract

The polishing machine polishes the rice in an annular cavity (11) with a vertical axis bounded on the outside by a jacket (4) with breakthroughs and on the inside by a co-axial rotor (8). The rice is fed in by a forcible-feed conveyor (21). The jacket and the rotor are in the shape of truncated cones. The rice is fed in at the upper narrow end of the cavity, the lower end of which has a yielding closing member (32).

Description

Die Erfindung bezieht sich auf eine Maschine zum Schleifen von Körnerfrüchten, insbesondere Reis, die dem bekannten Typ angehört, in welchem das zu schleifende Gut einen Ringraum durchläuft, der außen durch einen Mantel und innenseitig von einem Schleifrotor begrenzt ist. Der Mantel enthält Löcher oder Schlitze, durch die das Schleifmehl austreten kann. Das zu schleifende Gut wird dem Ringraum an einem Ende zugeführt und am anderen Ende von ihm abgeführt. Bei einer bekannten Maschine dieser Art (EP-B-521 452) sind der Mantel und der Rotor zylindrisch ausgebildet und vertikal angeordnet. Das Gut wird dem Ringraum am unteren Ende durch einen Schneckenförderer zwangsweise zugeführt. Am oberen Ende tritt das behandelte Gut frei aus dem Ringraum aus. Die Füllung des Ringraums wird durch die der Förderrichtung entgegengerichtete Schwerkraft gewährleistet. Diese Anordnung hat den Nachteil, daß die Schleifbedingungen nicht optimal eingestellt werden können. Die mit dem allmählichen Verschleiß des Rotors einhergehende Vergrößerung der radialen Weite des Ringraums kann nicht ausgeglichen werden. Eine Anpassung der Verfahrensparameter an unterschiedliche Eigenschaften des Schleifguts ist nicht möglich.The invention relates to a machine for grinding of cereals, especially rice, of the known type heard in which the material to be ground is an annular space passes through, the outside of a coat and the inside of a grinding rotor is limited. The coat contains holes or slots through which the grinding dust can escape. The Material to be ground is fed to the annular space at one end and led away from him at the other end. With a known Machines of this type (EP-B-521 452) are the jacket and the Rotor cylindrical and arranged vertically. The The annular space at the lower end is made good by a screw conveyor forcibly fed. The treated one occurs at the upper end Well clear from the annulus. The filling of the annulus is countered by the direction of conveyance Gravity guaranteed. This arrangement has the disadvantage that the grinding conditions are not optimally adjusted can. The associated with the gradual wear of the rotor May increase the radial width of the annulus not be balanced. An adjustment of the process parameters different properties of the abrasive not possible.

Das gilt auch bei bekannten Maschinen (offenkundige Vorbenutzung), bei denen der zylindrische, vertikal angeordnete Ringraum von oben nach unten durchlaufen wird. Das Gut wird ohne Zwangsförderung lediglich durch Schwerkraft zugeführt. Sein ungehinderter Austritt am unteren Ende wird durch einen Gegendruckteller verhindert, der das untere Ende des Ringraums verschließt und dem Austrittsdruck des Guts entgegen einem gewichtsbelasteten Hebelwerk ausweichen kann. Die Erfahrung zeigt, daß trotz des Vorhandenseins des Gegendrucktellers der Ringraum nicht vollständig gefüllt ist. Ebenso wie bei der vorgenannten Maschine ist die Leistung verhältnismäßig gering, ist der Bruchanteil hoch und stellt sich auch eine hohe Temperatur ein.This also applies to known machines (obvious prior use), where the cylindrical, vertically arranged annulus from top to bottom. The good will be without Forced aid is supplied only by gravity. His unhindered exit at the lower end is through a counter pressure plate prevents the lower end of the annulus closes and the outlet pressure of the good against one weighted lever mechanism can avoid. The experience shows that despite the presence of the backing plate the Annulus is not completely filled. Just like with the the aforementioned machine, the performance is relatively low, the fraction is high and is also high Temperature.

Es sind auch Maschinen bekannt (offenkundige Vorbenutzung), deren Ringraum konisch ausgebildet ist. Dem obenliegenden, großdurchmeßrigen Ende wird das Gut durch Schwerkraft zugeführt. Das untere, kleindurchmeßrige Ende ist offen. Eine vollständige Füllung des Arbeitsraums, die eine Voraussetzung für hohe Leistung ist, läßt sich nicht erreichen. Dieser Nachteil wird auch nicht durch den Vorteil der Verstellbarkeit der Ringraumweite aufgewogen. Denn bei dem Versuch, die Leistung durch Verringerung der Ringraumweite zu erhöhen, stellt sich eine zu hohe Arbeitstemperatur ein. Bessere Eigenschaften ergeben sich auch dann nicht, wenn die Konusanordnung umgekehrt wird. Von anspruchsvollen Herstellern werden deshalb heutzutage nur Maschinen mit zylindrischem Arbeitsraum angeboten.Machines are also known (obvious prior use), whose annular space is conical. The overhead large-diameter end, the material is fed by gravity. The lower, small-diameter end is open. A complete filling of the work space, which is a requirement for high performance cannot be achieved. This The disadvantage of being adjustable is not a disadvantage either the annulus width weighed. Because when trying that Increase performance by reducing the annulus width, the working temperature is too high. Better properties do not result even if the cone arrangement is reversed. From sophisticated manufacturers therefore nowadays only machines with cylindrical working space offered.

Der Erfindung liegt die Aufgabe zugrunde, bei guter Einstellbarkeit der Verfahrensparameter auf unterschiedliches Gut einen geringen Bruchanteil, geringe Temperatur und hohe Leistung zu erzielen. Dies gelingt durch die Merkmale des Anspruchs 1 sowie vorzugsweise die Merkmale der Unteransprüche.The invention is based, with good adjustability the task the process parameters to different goods low fraction, low temperature and high performance to achieve. This is achieved through the features of the claim 1 and preferably the features of the subclaims.

Demnach zeichnet sich die Maschine dadurch aus, daß das Ende kleinen Durchmessers des kegeligen Ringraums oben angeordnet ist. Die radiale Weite des Ringraums ist durch axiale Verstellung des Rotors einstellbar. Trotz der von oben stattfindenden Gutzufuhr ist ein Zwangsförderer vorgesehen. Das untere Ende ist durch ein nachgiebig ausweichendes Verschlußglied verschlossen.Accordingly, the machine is characterized in that the end small diameter of the conical annulus arranged above is. The radial width of the annulus is through axial adjustment of the rotor adjustable. Despite taking place from above A positive conveyor is provided for the supply of goods. The lower End is by a resiliently evasive closure member locked.

Es hat sich gezeigt, daß der Arbeitsraum (Ringraum) dieser Maschine vollständig gefüllt gehalten werden kann und eine hohe Schleifleistung bei schonender Behandlung des Guts erreicht wird.It has been shown that the working space (annulus) this Machine can be kept completely filled and one high grinding performance achieved with gentle handling of the material becomes.

Zweckmäßigerweise ist das am unteren Ende vorgesehene Verschlußglied von einem stumpfkegeligen Ventilteller gebildet, der im folgenden als Gegendruckteller bezeichnet wird. Seine Verschlußkraft wird durch Federn erzeugt. Anders als bei einem gewichtsbelasteten Gegendruckteller kann dabei die Masse der vom herausdrängenden Gut zu bewegenden Teile gering gehalten werden, so daß er rasch auf wechselnde Durchsatzverhältnisse reagieren kann.The closure member provided at the lower end is expedient formed by a truncated cone valve disc, which is referred to below as a counter pressure plate. His Closure force is generated by springs. Different from one weight-loaded counter pressure plate can be the mass the parts to be moved by the material being pushed out are kept low be so that it quickly changes to throughput ratios can react.

Der Zwangsförderer wird zweckmäßigerweise von einer mit dem Rotor drehverbundenen Förderschnecke gebildet, oberhalb der ein nach oben hin sich erweiternder Vorratsraum angeordnet ist. Die Erweiterung dieses Vorratsraums kann dadurch bewerkstelligt werden, daß auf den Rotor bzw. die Schnecke ein Kegel aufgesetzt ist.The positive conveyor is conveniently from one with the Rotor rotatably connected screw conveyor, formed above the a storage room that widens towards the top is. The expansion of this store room can be accomplished be that on the rotor or the worm a cone is put on.

Nach einem weiteren Merkmal der Erfindung wird in Zusammenhang mit der Maschine ein an sich bekannter (EP-B 521 452) Rotor verwendet, der über seine Länge verteilte Luftzufuhröffnungen aufweist. Ferner kann der Arbeitsraum - wie gleichfalls bekannt - mit im wesentlichen in Längsrichtung verlaufenden Bremsleisten versehen sein, die radial verstellbar sind, um die Verfahrensparameter noch feiner einstellen zu können.According to another feature of the invention is in context a machine known per se (EP-B 521 452) Rotor uses the air supply openings distributed over its length having. Furthermore, the work space - as well known - with essentially extending in the longitudinal direction Brake strips can be provided that are radially adjustable are to adjust the process parameters even more finely can.

Der Kegelwinkel des Mantels und des Rotors liegt zweckmäßigerweise im Bereich zwischen 4 und 10°.The cone angle of the shell and the rotor is expedient in the range between 4 and 10 °.

Die Erfindung wird im folgenden näher unter Bezugnahme auf die Zeichnung erläutert, die ein vorteilhaftes Ausführungsbeispiel in einem Halb-Längsschnitt schematisch veranschaulicht.The invention will now be described in more detail with reference to the drawing explains an advantageous embodiment schematically illustrated in a semi-longitudinal section.

Auf der Grundplatte 1, die als Kasten (nicht gezeigt) zur Aufnahme weiterer Aggregate ausgebildet sein kann, erhebt sich das Basisgehäuse 2 der Reisschleifmaschine. Darauf ist bei 3 der untere Rand des konischen Mantels 4 befestigt, der von einem Blechteil gebildet ist, das regelmäßige Löcher oder Schlitze in bekannter Weise enthält, deren Weite geringer ist als die Größe der Reiskörner. Darüber erhebt sich das zylindrische Kopfgehäuse 5, 6.On the base plate 1, which as a box (not shown) for Recording of additional units can be formed, raises the basic housing 2 of the rice grinding machine. On it attached at 3 the lower edge of the conical jacket 4, the is formed by a sheet metal part, the regular holes or Contains slots in a known manner, the width of which is smaller than the size of the grains of rice. The cylindrical rises above it Head housing 5, 6.

In dem Basisgehäuse oder dem die Grundplatte 1 bildenden Kasten ist in bekannter, nicht näher dargestellter Weise ein Lager und ein Antrieb für die Rotorwelle 7 angeordnet, die sich koaxial im Mantel 4 erstreckt und mit einer Reihe von Schleifringen den Rotor 8 bildet. Die Schleifringe bilden gemeinsam die kegelige Oberfläche des Rotors, die parallel, d. h. mit konstantem Radialabstand, zu dem Mantel 4 verläuft. Zwischen den einzelnen Schleifringen befinden sich Spalten 9, die eine Strömungsverbindung zu einem Kanal 10 innerhalb der Rotorwelle 7 aufweisen, der an ein nicht gezeigtes Gebläse angeschlossen ist. Während des Schleifprozesses wird aus den Spalten 9 ein kräftiger Luftstrom in den Ringraum 11 eingeblasen. Dieser Ringraum 11 bildet den Arbeitsraum der Maschine.In the base housing or the box forming the base plate 1 is in a known, not shown manner Bearing and a drive for the rotor shaft 7 arranged, the extends coaxially in the jacket 4 and with a series of Slip rings forms the rotor 8. The slip rings form together the tapered surface of the rotor, parallel, d. H. with constant radial distance to the jacket 4. There are gaps between the individual slip rings 9, which is a flow connection to a channel 10 inside of the rotor shaft 7, which is connected to a blower, not shown connected. During the grinding process, the columns 9 a strong air flow is blown into the annular space 11. This annular space 11 forms the working space of the machine.

Es sind (nicht gezeigte) Einrichtungen zur axialen Verstellung des Rotors 8 gegenüber dem Mantel 4 vorgesehen, die es gestatten, die radiale Weite des Arbeitsraums 11 je nach Art des behandelten Guts und dem Verschleißgrad des Rotors 8 einzustellen.They are devices (not shown) for axial adjustment of the rotor 8 opposite the jacket 4 provided it allow the radial width of the work space 11 depending on the type adjust the treated material and the degree of wear of the rotor 8.

Der Mantel 4 ist umgeben von einem Gehäuse 12, das mit dem Mantel 4 einen Raum 13 einschließt. Darin wird ein kräftiger Luftstrom erzeugt, der das Schleifmehl, das durch die Öffnungen im Mantel 4 aus dem Arbeitsraum 11 in den Raum 13 übertritt, abführt.The jacket 4 is surrounded by a housing 12 which with the Sheath 4 encloses a room 13. It becomes a powerful one Airflow creates the grinding dust that goes through the openings in the jacket 4 passes from the work room 11 into the room 13, dissipates.

Der Mantel 4 enthält in Richtung der Mantellinien verlaufende, in einer gemeinsamen Ebene mit der Achse der Rotorwelle 7 liegende Schlitze, in denen sich Bremsleisten 14 befinden, die durch Einstellschrauben 15 mehr oder weniger weit radial in den Ringraum 11 eingeschoben werden können, um die Umlaufbewegung des Schleifguts in einstellbarer Weise zu hemmen. Beispielsweise sind vier solcher Bremsleisten über dem Umfang angeordnet.The jacket 4 contains, in the direction of the jacket lines, in a common plane with the axis of the rotor shaft 7 lying slots in which there are brake strips 14, the radial by adjusting screws 15 more or less can be inserted into the annular space 11 to the circular movement inhibit the abrasive in an adjustable manner. For example, four such brake strips are around the circumference arranged.

Oberhalb des Rotors 8 trägt die Rotorwelle 7 einen Schneckenförderer 21 mit Förderwindungen, der das zu schleifende Gut aus dem darüber angeordneten Raum 22 während der Rotorbewegung in den Arbeitsraum 11 zwangsfördert. In dem Raum 22 fließt das Gut der Einlauföffnung des Schneckenförderers 21 unter seinem Eigengewicht zu, wobei durch die Wand des Kopfgehäuses sowie durch einen auf den Förderer 21 aufgesetzten Kegel 23 geführt wird. Dieser dreht sich mit dem Rotor. Die dadurch auf das anstehende Gut übertragene Bewegung bewirkt, daß dies stets gleichmäßig der Einlaufseite des Förderers zufließt.Above the rotor 8, the rotor shaft 7 carries a screw conveyor 21 with winding turns, the material to be ground from the space 22 arranged above during the rotor movement forcibly promoted into the work room 11. In room 22 flows the material of the inlet opening of the screw conveyor 21 under its own weight, going through the wall of the head housing and by one placed on the conveyor 21 Cone 23 is guided. This rotates with the rotor. The causes movement transferred to the pending good, that this always flows evenly to the inlet side of the conveyor.

Am oberen Ende bildet der Kopfgehäuseteil 6 einen Flansch 24 zum Anschluß einer Gutzuführungsleitung, ggf. unter Einschluß eines Absperr- oder Drosselorgans.At the upper end, the head housing part 6 forms a flange 24 for connecting a supply line, if necessary with inclusion a shut-off or throttling device.

Der Rotor 8 wird unten durch einen inneren zylindrischen Kragen 30 abgeschlossen, der von einem äußeren zylindrischen Kragen 31 des Basisgehäuses umschlossen und nach unten hin überragt wird. Durch den zwischen dem zylindrischen Kragen 30, 31 eingeschlossenen Ringraum dringt das behandelte Gut aus dem Arbeitsraum 11 heraus. Dabei steht es unter einem Überdruck, der zum einen durch den Zwangsförderer 20, 21 und zum anderen durch die konische Erweiterung des Arbeitsraums 11 bewirkt wird. Der untere Rand des äußeren Kragens 31 wirkt mit einem kegelstumpfförmigen Blechring 32 zusammen, der durch über den Umfang verteilte Federn 33 nach oben gegen den unteren Rand des äußeren Kragens 31 gezogen wird. Der Blechring 32 bildet den Gegendruckteller, der das untere Ende des Arbeitsraums 11 verschließt und durch den Druck des zwischen den zylindrischen Kragen 30, 31 herausdrängenden Guts gegen die Kraft der Federn 33 angehoben wird, um das Gut in den anschließenden Raum 34 des Basisgehäuses zu entlassen. Von dort aus kann das Gut abfließen oder abgefördert werden.The rotor 8 is bottom by an inner cylindrical collar 30 completed by an outer cylindrical Collar 31 of the base housing enclosed and down is towered over. By the between the cylindrical collar 30, 31 enclosed annular space penetrates the treated good out of the work space 11. It is under one Overpressure, on the one hand by the positive conveyor 20, 21 and on the other hand through the conical expansion of the work area 11 is effected. The lower edge of the outer collar 31 acts together with a frustoconical sheet metal ring 32, the by springs 33 distributed over the circumference upwards against the lower edge of the outer collar 31 is pulled. The tin ring 32 forms the counter pressure plate, which is the lower end of the Working space 11 closes and by the pressure of the between against the cylindrical collar 30, 31 pushing out goods the force of the springs 33 is increased to the good in the subsequent Dismiss room 34 of the base case. From there the goods can flow out or be conveyed out.

Der innere Kragen 30 braucht nicht bis zu dem Gegendruckteller herabzureichen. Dies ist auch im allgemeinen nicht erwünscht, damit hinreichende räumliche Freiheit für die axiale Verstellung des Rotors im Verhältnis zum Mantel 4 vorhanden ist. Mit dem Gegendruckteller 32 können Führungsarme 35 verbunden sein, die mit der Rotorwelle 7, dem inneren Kragen 30 oder irgendeinem anderen Teil der Maschine zur axialen Führung des Gegendrucktellers 32 zusammenwirken.The inner collar 30 does not need to reach the counter pressure plate to submit. This is also generally not desirable thus sufficient spatial freedom for the axial Adjustment of the rotor in relation to the jacket 4 is available is. Guide arms 35 can be connected to the counter-pressure plate 32 with the rotor shaft 7, the inner collar 30 or any other part of the machine for axial guidance of the counter pressure plate 32 cooperate.

Der Kegelwinkel des Mantels 4 und des Rotors 8, d. h. der Winkel zwischen einander diametral gegenüberliegenden Mantellinien dieser Teile, liegt zweckmäßigerweise in der Größenordnung von 6°.The cone angle of the shell 4 and the rotor 8, i.e. H. the Angle between diametrically opposed surface lines these parts are expediently of the order of magnitude of 6 °.

Claims (8)

Maschine zum Schleifen von Körnerfrüchten, insbesondere Reis, in einem Ringraum (11) mit vertikaler Achse, der außen von einem Durchbrechungen enthaltenden Mantel (4) und innenseitig von einem zum Mantel koaxialen Rotor (8) begrenzt ist und dem das zu schleifende Gut mittels eines Zwangsförderers (21) zugeführt wird, dadurch gekennzeichnet, daß der Mantel (4) und der Rotor (8) kegelstumpfförmig und axial relativ zueinander verstellbar sind, daß die Gutzuführung am oberen, engeren Ende des Mantels (4) vorgesehen ist und das untere Ende des Ringraums (11) mit einem nachgiebigen Verschlußglied (32) versehen ist.Grain grinding machine, in particular Rice, in an annular space (11) with a vertical axis, the outside of a jacket containing perforations (4) and inside of a rotor (8) coaxial to the jacket is limited and the material to be grinded by means of a Forced conveyor (21) is fed, characterized in that that the jacket (4) and the rotor (8) frustoconical and axially adjustable relative to each other that the material feed at the upper, narrower end of the jacket (4) is provided and the lower end of the annular space (11) a resilient closure member (32) is provided. Maschine nach Anspruch 1, dadurch gekennzeichnet, daß das Verschlußglied (32) von einem federnd abgestützten, stumpfkegeligen Ventilteller gebildet ist.Machine according to claim 1, characterized in that the Locking member (32) from a spring-loaded, truncated cone valve plate is formed. Maschine nach Anspruch 2, dadurch gekennzeichnet, daß die Stärke der federnden Abstützung (33) einstellbar ist.Machine according to claim 2, characterized in that the Strength of the resilient support (33) is adjustable. Maschine nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Zwangsförderer von einer mit dem Rotor (8) drehverbundenen Förderschnecke (21) gebildet ist und oberhalb derselben ein sich nach oben erweiternder Vorratsraum (22) angeordnet ist.Machine according to one of claims 1 to 3, characterized in that that the forced conveyor of one with the Rotor (8) rotatably connected screw conveyor (21) is formed and above it is an expanding one Storage room (22) is arranged. Maschine nach Anspruch 4, dadurch gekennzeichnet, daß oberhalb der Schnecke (21) auf dem Rotor (8) ein Kegel (23) angeordnet ist.Machine according to claim 4, characterized in that Above the screw (21) on the rotor (8) a cone (23) is arranged. Maschine nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß im Rotor (8) verteilt über dessen Länge Luftzuführungsöffnungen (9) vorgesehen sind.Machine according to one of claims 1 to 5, characterized in that that in the rotor (8) distributed over its length Air supply openings (9) are provided. Maschine nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß im Mantel radial verstellbare Bremsleisten (14) vorgesehen sind, deren Richtung überwiegend in Längsrichtung des Mantels (4) verläuft.Machine according to one of claims 1 to 6, characterized in that that radially adjustable brake strips in the jacket (14) are provided, the direction of which is predominantly in Longitudinal direction of the jacket (4) runs. Maschine nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß der Kegelwinkel des Mantels und des Rotors zwischen 4 und 10° liegt.Machine according to one of claims 1 to 7, characterized in that that the cone angle of the shell and the rotor is between 4 and 10 °.
EP98710016A 1998-11-12 1998-11-12 Apparatus for polishing grains, especially rice Expired - Lifetime EP1000662B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
ES98710016T ES2163245T3 (en) 1998-11-12 1998-11-12 MACHINE TO POLISH GRAINS, IN PARTICULAR RICE.
DE59801402T DE59801402D1 (en) 1998-11-12 1998-11-12 Grain grinding machine, especially rice
EP98710016A EP1000662B1 (en) 1998-11-12 1998-11-12 Apparatus for polishing grains, especially rice
BR9901307-0A BR9901307A (en) 1998-11-12 1999-01-28 Machine for grinding cereals, in particular rice
TW088106834A TW500633B (en) 1998-11-12 1999-04-28 Machine for milling cereals, in particular rice
US09/304,794 US6193179B1 (en) 1998-11-12 1999-05-04 Machine for milling cereals, in particular rice

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98710016A EP1000662B1 (en) 1998-11-12 1998-11-12 Apparatus for polishing grains, especially rice

Publications (2)

Publication Number Publication Date
EP1000662A1 true EP1000662A1 (en) 2000-05-17
EP1000662B1 EP1000662B1 (en) 2001-09-05

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ID=8235887

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98710016A Expired - Lifetime EP1000662B1 (en) 1998-11-12 1998-11-12 Apparatus for polishing grains, especially rice

Country Status (6)

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US (1) US6193179B1 (en)
EP (1) EP1000662B1 (en)
BR (1) BR9901307A (en)
DE (1) DE59801402D1 (en)
ES (1) ES2163245T3 (en)
TW (1) TW500633B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006012756A1 (en) * 2004-08-06 2006-02-09 Bühler AG Polishing rotor
US7265870B2 (en) 2001-11-26 2007-09-04 Agfa Graphics Nv Colour separation method
CN103108698A (en) * 2010-10-27 2013-05-15 布勒(印度)有限公司 Abrasive roll assembly

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2101467A (en) * 1981-06-10 1983-01-19 Yamamoto Soichi Vertical frictionally abrasive roll rice polishing machine
GB2101871A (en) * 1981-06-19 1983-01-26 Soichi Yamamoto Verical abrasive roll rice polishing machine
EP0521452B1 (en) 1991-07-03 1995-08-16 F.H. Schule Mühlenbau GmbH Process for apparatus for polishing grains
EP0668107A1 (en) * 1994-02-17 1995-08-23 Satake Corporation Abrasive type vertical grain milling machine
GB2323766A (en) * 1997-04-05 1998-10-07 Cocksedge Eng Ltd Seed cleaning machine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5806772A (en) * 1996-11-22 1998-09-15 Nordberg, Inc. Conical gyratory grinding and crushing apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2101467A (en) * 1981-06-10 1983-01-19 Yamamoto Soichi Vertical frictionally abrasive roll rice polishing machine
GB2101871A (en) * 1981-06-19 1983-01-26 Soichi Yamamoto Verical abrasive roll rice polishing machine
EP0521452B1 (en) 1991-07-03 1995-08-16 F.H. Schule Mühlenbau GmbH Process for apparatus for polishing grains
EP0668107A1 (en) * 1994-02-17 1995-08-23 Satake Corporation Abrasive type vertical grain milling machine
GB2323766A (en) * 1997-04-05 1998-10-07 Cocksedge Eng Ltd Seed cleaning machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7265870B2 (en) 2001-11-26 2007-09-04 Agfa Graphics Nv Colour separation method
WO2006012756A1 (en) * 2004-08-06 2006-02-09 Bühler AG Polishing rotor
CN103108698A (en) * 2010-10-27 2013-05-15 布勒(印度)有限公司 Abrasive roll assembly
CN103108698B (en) * 2010-10-27 2014-11-26 布勒(印度)有限公司 Grinding roller assembly

Also Published As

Publication number Publication date
US6193179B1 (en) 2001-02-27
TW500633B (en) 2002-09-01
BR9901307A (en) 2001-03-20
ES2163245T3 (en) 2002-01-16
EP1000662B1 (en) 2001-09-05
DE59801402D1 (en) 2001-10-11

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