EP0815957A1 - Sieving device for sieving powdery material - Google Patents

Sieving device for sieving powdery material Download PDF

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Publication number
EP0815957A1
EP0815957A1 EP97108472A EP97108472A EP0815957A1 EP 0815957 A1 EP0815957 A1 EP 0815957A1 EP 97108472 A EP97108472 A EP 97108472A EP 97108472 A EP97108472 A EP 97108472A EP 0815957 A1 EP0815957 A1 EP 0815957A1
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EP
European Patent Office
Prior art keywords
sieve
screening machine
section
machine according
housing
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Granted
Application number
EP97108472A
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German (de)
French (fr)
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EP0815957B1 (en
Inventor
Rudolf Schinke
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/18—Drum screens
    • B07B1/20—Stationary drums with moving interior agitators

Definitions

  • the invention relates to a screening machine for screening powder material with a housing, one arranged in the housing Sieve and a conveyor for conveying the material over the sieve.
  • a tubular sieve is usually used here, through which the powder material by means of a screw or a promoted rapidly rotating centrifuge while doing so the centrifugal force pressed against the screen surface from the inside becomes.
  • the problem is observed that possibly due to the friction of the powder particles on the sieve and the resulting charging of the particles this powder particle occurs on the sieve, making a passage difficult or prevented by the sieve openings, if the sieve openings are sufficiently dimensioned. Thereby exact classification or screening is not possible. With Such devices can therefore be fine powders with grain sizes of maximum 250 ⁇ m can not be classified successfully. Other methods such as air sifting must be used there will.
  • the object of the invention is a screening machine of the beginning to create the type described, in which this problem is not occurs.
  • the object is characterized by one in claim 1 Screening machine released.
  • the screening machine shown in FIG. 1 has a housing 1. This has a cylindrical first section 2 with an entrance at the top in the working position 3. A second section follows the first section 4 of the housing on its in working position below lying side a trough-shaped section 5 which is the deepest at its working position Position has an outlet opening 6.
  • a cylindrical sieve 7 is arranged in the first section 2.
  • This strainer is open at both ends Sieve cartridge designed.
  • the second section 4 of the housing has a corresponding cylindrical on its end face 9 Opening for inserting or removing the sieve cartridge on.
  • the sieve cartridge itself has holding elements at both ends 10, 11 with which a suitable screw firm connection to the second section 4 of the housing is formed.
  • the sieve 7 is preferably made of a stainless steel sheet with sieve openings suitable size, in particular 100-200 ⁇ m and preferably 150 ⁇ m formed. Has the strainer because of the low Sheet thickness is not sufficient, then are on the two ends of the cylindrical sieve holders are provided for holding tension rods.
  • the brush 12 contains a soul in the form of two twisted Wires, between which there are substantially radially extending Bristles are held so that the helical Windings around the soul with formed between the windings form free helical spaces.
  • the length of the Bristles is chosen so that the outer diameter of the Soul and bristle formed brush is slightly larger than the inside diameter of the sieve.
  • the bristles each consist of approximately 50% nylon or horsehair. Other suitable bristle materials can also be used will. The use of at least one is advantageous Part of horsehair, because this material is the static charge of the powder material.
  • the slope of the winding of the bristles can be selected by the The number, size and shape of the twisted wires are selected appropriately will.
  • the brush 12 is so in via the drive motor 14 Rotation displaces the brush from the input side to the Promotes exit side.
  • One supplied via input 3 Powder material is then transferred from the input side to the output 8 promoted through the sieve.
  • the bristles take on the additional Task, with their abutting the inner surface of the sieve and there, because of their increased length, snug ends to push the material through the sieve openings. So that is Sieving does not require centrifugal force, so the brush can rotate at a relatively slow speed.
  • the shares larger grain size are at the free end 8 of the cylindrical Ejected.
  • Figures 2 to 7 show a second embodiment and details the same. All of those features that match the first Embodiment match, are with the same reference numerals Mistake.
  • the core 15 of the brush is best seen in FIG. 6 is made of two helically wound metal strips 16, 17 formed, between which are in the radial direction extending bristles 18 are held.
  • the soul On the clutch side In the end, the soul has one that is best seen in FIG. 5 flat coupling piece 19 for engagement with the coupling 13 on.
  • the filter cartridge is only on its side facing away from the entrance output end with holding elements 10 for non-rotatable Connect to the housing.
  • the cartridge is, as best seen in Fig. 2 can be seen, only at the end on the output side attached to the holding member 10 and otherwise projects freely into the Housing inside. A bracket and alignment is done by the brush attached to the opposite end of the clutch 12th
  • a screw conveyor 21 is provided, which is hollow and of the coupling-side end of the brush attached to this is, as can best be seen from Fig. 2.
  • the Screw conveyor 21 has on its facing the clutch End on a closed bottom 22 shown in Fig. 4, the has in its center an opening 23 in shape and dimensions corresponds to the outer dimensions of the soul. To this way, the screw conveyor is attached to the soul and on this end carried by the soul and driven together with it.
  • the powder fed through the inlet is first through the screw conveyor 21 to the sieve section promoted and then in the same way as the first Embodiment sieved.
  • the embodiment shown in Fig. 8 differs from the embodiment shown in Fig. 2 in that the sieve 3 consecutive sections seen in the axial direction 24, 25, 26, each different from Have increasing hole sizes seen from the entrance to the exit. Each of the sections is a separate trough-shaped section 5, 27, 28 with associated outlet openings 6, 29, 30 assigned. Otherwise, the embodiment has the same Features on as the embodiment explained with reference to FIG. 2.

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  • Combined Means For Separation Of Solids (AREA)
  • Eye Examination Apparatus (AREA)
  • Holo Graphy (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)

Abstract

A powder sieving machine (1) has a housing (2) contg. a tubular sieve (9) and a transport device (15) for conveying material in the longitudinal direction through the sieve (9). The novelty is that the transport device (15) has a helical brush (22) which is arranged coaxially in the sieve (9) and which is rotated by a coupled drive (16). Pref. the brush bristles (19) consist at least partially of horse hair.

Description

Die Erfindung betrifft eine Siebmaschine zum Sieben von Pulvermaterial mit einem Gehäuse, einem im Gehäuse angeordneten Sieb und einer Fördervorrichtung zum Fördern des Materials über das Sieb.The invention relates to a screening machine for screening powder material with a housing, one arranged in the housing Sieve and a conveyor for conveying the material over the sieve.

Hierbei wird üblicherweise ein rohrförmiges Sieb verwendet, durch das das Pulvermaterial mittels einer Schnecke oder einer schnell rotierenden Zentrifuge gefördert und dabei aufgrund der Zentrifugalkraft von innen gegen die Siebfläche gedrückt wird. In der Praxis wird dabei das Problem beobachtet, daß möglicherweise aufgrund der Reibung der Pulverteilchen am Sieb und der dabei entstehenden Aufladung der Teilchen eine Haftung dieser Pulverteilchen am Sieb auftritt, die einen Durchgang durch die Sieböffnungen auch dann erschwert oder verhindert, wenn die Sieböffnungen ausreichend dimensioniert sind. Dadurch wird eine genau Klassierung bzw. Siebung nicht möglich. Mit solchen Vorrichtungen können deshalb feine Pulver mit Korngrößen von maximal 250µm nicht erfolgreich klassiert werden. Es müssen dort andere Verfahren wie das Windsichten verwendet werden.A tubular sieve is usually used here, through which the powder material by means of a screw or a promoted rapidly rotating centrifuge while doing so the centrifugal force pressed against the screen surface from the inside becomes. In practice, the problem is observed that possibly due to the friction of the powder particles on the sieve and the resulting charging of the particles this powder particle occurs on the sieve, making a passage difficult or prevented by the sieve openings, if the sieve openings are sufficiently dimensioned. Thereby exact classification or screening is not possible. With Such devices can therefore be fine powders with grain sizes of maximum 250µm can not be classified successfully. Other methods such as air sifting must be used there will.

Aufgabe der Erfindung ist es, eine Siebmaschine der eingangs beschriebenen Art zu schaffen, bei der dieses Problem nicht auftritt. The object of the invention is a screening machine of the beginning to create the type described, in which this problem is not occurs.

Die Aufgabe wird durch eine in Patentanspruch 1 gekennzeichnete Siebmaschine gelöst.The object is characterized by one in claim 1 Screening machine released.

Weiterbildungen der Erfindung sind in den Unteransprüchen dargestellt.Further developments of the invention are presented in the subclaims.

Im weiteren wird die Erfindung anhand von Ausführungsbeispielen unter Bezugnahme auf die Figuren beschrieben.Furthermore, the invention is based on exemplary embodiments described with reference to the figures.

Die Figuren zeigen:

Fig. 1
eine Schnittdarstellung einer ersten Ausführungsform;
Fig. 2
eine Schnittdarstellung einer zweiten Ausführungsform;
Fig. 3
eine Seitenansicht einer verwendeten Schnecke;
Fig. 4
eine Stirnansicht der in Fig. 3 gezeigten Schnecke;
Fig. 5
eine Seitenansicht der verwendeten Bürste;
Fig. 6
einen Schnitt durch die Bürste;
Fig. 7
eine Seitenansicht einer Siebpatrone; und
Fig. 8
eine schematische Seitenansicht einer dritten Ausführungsform der Siebmaschine.
The figures show:
Fig. 1
a sectional view of a first embodiment;
Fig. 2
a sectional view of a second embodiment;
Fig. 3
a side view of a snail used;
Fig. 4
an end view of the screw shown in Fig. 3;
Fig. 5
a side view of the brush used;
Fig. 6
a cut through the brush;
Fig. 7
a side view of a screen cartridge; and
Fig. 8
is a schematic side view of a third embodiment of the screening machine.

Die in Fig. 1 gezeigte Siebmaschine weist ein Gehäuse 1 auf. Dieses besitzt einen zylinderförmig ausgebildeten ersten Abschnitt 2 mit einem in Arbeitsstellung oben liegenden Eingang 3. An den ersten Abschnitt schließt sich ein zweiter Abschnitt 4 des Gehäuses an, der auf seiner in Arbeitsstellung unten liegenden Seite einen trogförmig ausgebildeten Abschnitt 5 aufweist, welcher an seiner in Arbeiststellung gesehen tiefsten Stellung eine Austrittsöffnung 6 aufweist.The screening machine shown in FIG. 1 has a housing 1. This has a cylindrical first section 2 with an entrance at the top in the working position 3. A second section follows the first section 4 of the housing on its in working position below lying side a trough-shaped section 5 which is the deepest at its working position Position has an outlet opening 6.

In dem zweiten Abschnitt ist koaxial zu dem zylinderförmigen ersten Abschnitt 2 ein zylinderförmig ausgebildetes Sieb 7 angeordnet. Dieses Sieb ist als eine an ihren beiden Enden offene Siebpatrone ausgebildet. Der zweite Abschnitt 4 des Gehäuses weist an seiner Stirnseite 9 eine entsprechende zylindrische Öffnung zum Einschieben bzw. Herausnehmen der Siebpatrone auf. Die Siebpatrone selbst weist an ihren beiden Enden Halteelemente 10, 11 auf, mit denen mit geeigneten Schrauben eine feste Verbindung mit dem zweiten Abschnitt 4 des Gehäuses gebildet wird.In the second section is coaxial to the cylindrical one a cylindrical sieve 7 is arranged in the first section 2. This strainer is open at both ends Sieve cartridge designed. The second section 4 of the housing has a corresponding cylindrical on its end face 9 Opening for inserting or removing the sieve cartridge on. The sieve cartridge itself has holding elements at both ends 10, 11 with which a suitable screw firm connection to the second section 4 of the housing is formed.

Das Sieb 7 ist vorzugsweise aus einem Edelstahlblech mit Sieböffnungen geeigneter Größe, insbesondere 100 - 200µm und vorzugsweise 150µm gebildet. Hat das Sieb wegen der geringen Blechstärke keine ausreichende Formstabilität, dann sind an den beiden Enden des zylinderförmigen Siebes Halterungen vorgesehen zur Aufnahme von Spannstäben.The sieve 7 is preferably made of a stainless steel sheet with sieve openings suitable size, in particular 100-200 µm and preferably 150µm formed. Has the strainer because of the low Sheet thickness is not sufficient, then are on the two ends of the cylindrical sieve holders are provided for holding tension rods.

Wie aus Fig. 1 ersichtlich ist, ist im Inneren des Siebes 7 und koaxial zu diesem eine schraubenförmig gewickelte Bürste 12 vorgesehen. Das eine Ende der Bürstenseele ist über eine Kupplung 13 mit einem Antriebsmotor 14 verbunden.As can be seen from FIG. 1, the inside of the screen 7 and coaxial with it a helically wound brush 12 provided. One end of the brush core is over one Coupling 13 connected to a drive motor 14.

Die Bürste 12 enthält eine Seele in Form von zwei verdrillten Drähten, zwischen denen sich im wesentlichen radial erstrekkende Borsten derart gehalten sind, daß die schraubenförmigen Wicklungen um die Seele mit zwischen den Wicklungen gebildeten freien schraubenförmigen Zwischenräumen bilden. Die Länge der Borsten ist so gewählt, daß der Außendurchmesser der von der Seele und den Borsten gebildeten Bürste etwas größer ist als der Innendurchmesser des Siebes. Eine Lagerung der Seele insbesondere an ihrem der Kupplung 13 abgewandten freien Ende ist nicht erforderlich, da die Bürste über die im Sieb anliegenden Borsten zentriert wird.The brush 12 contains a soul in the form of two twisted Wires, between which there are substantially radially extending Bristles are held so that the helical Windings around the soul with formed between the windings form free helical spaces. The length of the Bristles is chosen so that the outer diameter of the Soul and bristle formed brush is slightly larger than the inside diameter of the sieve. A storage of the soul in particular at its free end facing away from the coupling 13 not necessary, since the brush fits over the ones in the sieve Bristles is centered.

Die Borsten bestehen jeweils etwa zu 50% aus Nylon bzw. Roßhaar. Es können auch andere geeignete Borstenmaterialien verwendet werden. Vorteilhaft ist die Verwendung zumindest eines Teiles von Roßhaar, da dieses Material die statische Aufladung des Pulvermateriales wegnimmt.The bristles each consist of approximately 50% nylon or horsehair. Other suitable bristle materials can also be used will. The use of at least one is advantageous Part of horsehair, because this material is the static charge of the powder material.

Die Steigung der Wicklung der Borsten kann durch die Wahl der Anzahl, Größe und Form der verdrillten Drähte geeignet gewählt werden.The slope of the winding of the bristles can be selected by the The number, size and shape of the twisted wires are selected appropriately will.

Im Betrieb wird die Bürste 12 über den Antriebsmotor 14 so in Rotation versetzt, daß die Bürste von der Eingangsseite zur Ausgangsseite hin fördert. Ein über den Eingang 3 zugeführtes Pulvermaterial wird dann von der Eingangsseite zu dem Ausgang 8 hin durch das Sieb gefördert. Die Borsten übernehmen die zusätzliche Aufgabe, mit ihren an der Siebinnenfläche anliegenden und dort wegen ihrer erhöhten Länge anschmiegenden Enden das Material durch die Sieböffnungen zu drücken. Damit ist zur Siebung keine Zentrifugalkraft erforderlich, so daß die Bürste mit relativ geringer Geschwindigkeit rotieren kann. Die Anteile größerer Korngröße werden am freien Ende 8 des zylindrischen Siebes ausgestoßen.In operation, the brush 12 is so in via the drive motor 14 Rotation displaces the brush from the input side to the Promotes exit side. One supplied via input 3 Powder material is then transferred from the input side to the output 8 promoted through the sieve. The bristles take on the additional Task, with their abutting the inner surface of the sieve and there, because of their increased length, snug ends to push the material through the sieve openings. So that is Sieving does not require centrifugal force, so the brush can rotate at a relatively slow speed. The shares larger grain size are at the free end 8 of the cylindrical Ejected.

Die Figuren 2 bis 7 zeigen eine zweite Ausführungsform und Details derselben. Alle diejenigen Merkmale, die mit der ersten Ausführungsform übereinstimmen, sind mit den gleichen Bezugszeichen versehen.Figures 2 to 7 show a second embodiment and details the same. All of those features that match the first Embodiment match, are with the same reference numerals Mistake.

Die Seele 15 der Bürste ist, wie am besten aus Fig. 6 ersichtlich ist, aus zwei schraubenförmig gewundenen Blechstreifen 16, 17 gebildet, zwischen denen die sich in radialer Richtung erstreckenden Borsten 18 gehalten sind. An dem kupplungsseitigen Ende weist die Seele ein am besten in Fig. 5 ersichtliches flaches Kupplungsstuck 19 zum Ineingriffbringen mit der Kupplung 13 auf.The core 15 of the brush is best seen in FIG. 6 is made of two helically wound metal strips 16, 17 formed, between which are in the radial direction extending bristles 18 are held. On the clutch side In the end, the soul has one that is best seen in FIG. 5 flat coupling piece 19 for engagement with the coupling 13 on.

Die Siebpatrone ist lediglich an ihrem dem Eingang abgewandten ausgangsseitigen Ende mit Halteelementen 10 zum drehfesten Verbinden mit dem Gehäuse versehen. In der Ausführungsform sind an den beiden Stirnseiten der Patrone abgestützte Spannstäbe 20 gezeigt. Die Patrone ist, wie am besten aus Fig. 2 ersichtlich ist, lediglich an dem ausgangsseitigen Ende mit dem Halteelement 10 befestigt und ragt ansonsten frei in das Gehäuse hinein. Eine Halterung und Ausrichtung erfolgt durch die am entgegengesetzten Ende der Kupplung festgemachte Bürste 12.The filter cartridge is only on its side facing away from the entrance output end with holding elements 10 for non-rotatable Connect to the housing. In the embodiment are tension rods supported on both ends of the cartridge 20 shown. The cartridge is, as best seen in Fig. 2 can be seen, only at the end on the output side attached to the holding member 10 and otherwise projects freely into the Housing inside. A bracket and alignment is done by the brush attached to the opposite end of the clutch 12th

Anders als bei der ersten Ausführungsform ist in dem ersten Abschnitt des Gehäuses unterhalb des Einganges 3 eine Förderschnecke 21 vorgesehen, die hohl ausgebildet ist und die von dem kupplungsseitigen Ende der Bürste her auf diese aufgesteckt ist, wie dies am besten aus Fig. 2 ersichtlich ist. Die Förderschnecke 21 weist auf ihrem der Kupplung zugewandten Ende einen in Fig. 4 gezeigten geschlossenen Boden 22 auf, der in seiner Mitte eine Öffnung 23 besitzt, die in Form und Abmessungen den Außenabmessungen der Seele entspricht. Auf diese Weise wird die Förderschnecke auf die Seele aufgesteckt und an diesem Ende von der Seele getragen und mit dieser zusammen angetrieben.Unlike the first embodiment, the first Section of the housing below the entrance 3 a screw conveyor 21 is provided, which is hollow and of the coupling-side end of the brush attached to this is, as can best be seen from Fig. 2. The Screw conveyor 21 has on its facing the clutch End on a closed bottom 22 shown in Fig. 4, the has in its center an opening 23 in shape and dimensions corresponds to the outer dimensions of the soul. To this In this way, the screw conveyor is attached to the soul and on this end carried by the soul and driven together with it.

Im Betrieb wird das durch den Eingang zugeführte Pulver zunächst durch die Förderschnecke 21 bis zu dem Siebabschnitt gefördert und dann in der gleichen Weise wie bei der ersten Ausführungsform gesiebt.In operation, the powder fed through the inlet is first through the screw conveyor 21 to the sieve section promoted and then in the same way as the first Embodiment sieved.

Die in Fig. 8 gezeigte Ausführungsform unterscheidet sich von der in Fig. 2 gezeigten Ausführungsform dadurch, daß das Sieb 3 in axialer Richtung gesehen aufeinanderfolgende Abschnitte 24, 25, 26 aufweist, die jeweils unterschiedliche und zwar vom Eingang zum Ausgang hin gesehen zunehmende Lochgrößen aufweisen. Jedem der Abschnitte ist ein eigener trogförmiger Abschnitt 5, 27, 28 mit zugehörigen Austrittsöffnungen 6, 29, 30 zugeordnet. Ansonsten weist die Ausführungsform die gleichen Merkmale auf wie die anhand von Fig. 2 erläuterte Ausführungsform.The embodiment shown in Fig. 8 differs from the embodiment shown in Fig. 2 in that the sieve 3 consecutive sections seen in the axial direction 24, 25, 26, each different from Have increasing hole sizes seen from the entrance to the exit. Each of the sections is a separate trough-shaped section 5, 27, 28 with associated outlet openings 6, 29, 30 assigned. Otherwise, the embodiment has the same Features on as the embodiment explained with reference to FIG. 2.

Claims (9)

Siebmaschine zum Sieben von Pulvermaterial, mit einem Gehäuse (1), einem im Gehäuse angeordneten Sieb (7), und einer Fördervorrichtung zum Fördern des Materials über das Sieb (7), dadurch gekennzeichnet, daß die Fördervorrichtung eine im wesentlichen parallel zur Siebfläche angeordnete schraubenförmig gewickelte Bürste (12) und einen mit der Bürste gekoppelten Antrieb (13, 14) zum Drehen der Bürste (12) aufweist.Screening machine for screening powder material, with a housing (1), a sieve (7) arranged in the housing, and one Conveying device for conveying the material over the sieve (7), characterized in that the conveyor is a substantially helical arranged parallel to the sieve surface wound brush (12) and one coupled to the brush Has drive (13, 14) for rotating the brush (12). Siebmaschine nach Anspruch 1, dadurch gekennzeichnet, daß das Sieb (7) als sich im wesentlichen horizontal erstreckender Siebzylinder ausgebildet ist.Screening machine according to claim 1, characterized in that the sieve (7) as extending substantially horizontally Screen cylinder is formed. Siebmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Sieb (7) als in dem Gehäuse (1) auswechselbar befestigte Siebpatrone ausgebildet ist.Screening machine according to claim 1 or 2, characterized in that that the sieve (7) as replaceable in the housing (1) attached Sieve cartridge is formed. Siebmaschine nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das Gehäuse (1) einen einen Eingang (3) aufweisenden ersten Abschnitt (2) und einen einen Ausgang (6) aufweisenden zweiten Abschnitt (4) aufweist.Screening machine according to one of claims 1 to 3, characterized characterized in that the housing (1) has an input (3) having the first section (2) and an output (6) having the second section (4). Siebmaschine nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß in dem ersten Abschnitt (2) eine Förderschnecke vorgesehen ist.Screening machine according to one of claims 1 to 4, characterized characterized in that in the first section (2) a screw conveyor is provided. Siebmaschine nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Länge der Borsten (18) so gewählt ist, daß der Durchmesser der Bürste (12) größer ist als der Innendurchmesser des Siebes (7).Screening machine according to one of claims 1 to 5, characterized characterized in that the length of the bristles (18) is selected so that the diameter of the brush (12) is larger than the inside diameter of the sieve (7). Siebmaschine nach einem der Ansprüche 2 bis 6, dadurch gekennzeichnet, daß die Borsten (18) zumindest teilweise aus Roßhaar bestehen. Screening machine according to one of claims 2 to 6, characterized characterized in that the bristles (18) at least partially Horsehair exist. Siebmaschine nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Sieböffnungen einen Durchmesser von 100-200µm, vorzugsweise 150µm aufweisen.Screening machine according to one of claims 1 to 7, characterized characterized in that the sieve openings have a diameter of 100-200 µm, preferably 150 µm. Siebmaschine nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß das Sieb (7) einen ersten Abschnitt (24) einer ersten Maschenweite und daran anschließend einen zweiten Abschnitt (25) einer zweiten Maschenweite und das Gehäuse (1) einen dem ersten Abschnitt (24) zugeordneten ersten Ausgang (6) und einen dem zweiten Abschnitt (25) zugeordneten zweiten Ausgang (29) aufweisen.Screening machine according to one of claims 1 to 8, characterized characterized in that the screen (7) has a first section (24) a first mesh size and then a second Section (25) of a second mesh size and the housing (1) a first output associated with the first section (24) (6) and a second assigned to the second section (25) Have exit (29).
EP97108472A 1996-06-25 1997-05-26 Sieving device for sieving powdery material Expired - Lifetime EP0815957B1 (en)

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DE29611141U 1996-06-25
DE29611141U DE29611141U1 (en) 1996-06-25 1996-06-25 Screening machine

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EP0815957A1 true EP0815957A1 (en) 1998-01-07
EP0815957B1 EP0815957B1 (en) 1999-04-07

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2101722A (en) * 1935-09-24 1937-12-07 Schultz Edward Bolting machine
EP0353126A1 (en) * 1988-07-25 1990-01-31 Forplex S.A. Machine for screening dusty, floury or granular products
FR2653042A1 (en) * 1989-10-18 1991-04-19 Corberon Rene Low [extra-low] mobile sorter with agitator table and screw brush for sorting field peas and cereals
JPH0461971A (en) * 1990-06-26 1992-02-27 Taabo Kogyo Kk Multiple sorting cylindrical screen classifier
DE9211176U1 (en) * 1992-08-20 1992-10-29 Häberle, Wilhelm, 72516 Scheer Cleaning facility

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2101722A (en) * 1935-09-24 1937-12-07 Schultz Edward Bolting machine
EP0353126A1 (en) * 1988-07-25 1990-01-31 Forplex S.A. Machine for screening dusty, floury or granular products
FR2653042A1 (en) * 1989-10-18 1991-04-19 Corberon Rene Low [extra-low] mobile sorter with agitator table and screw brush for sorting field peas and cereals
JPH0461971A (en) * 1990-06-26 1992-02-27 Taabo Kogyo Kk Multiple sorting cylindrical screen classifier
DE9211176U1 (en) * 1992-08-20 1992-10-29 Häberle, Wilhelm, 72516 Scheer Cleaning facility

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 016, no. 261 (C - 0950) 12 June 1992 (1992-06-12) *

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DE29611141U1 (en) 1996-08-29
ES2132987T3 (en) 1999-08-16
EP0815957B1 (en) 1999-04-07
DE59700124D1 (en) 1999-05-12

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