EP0000937A1 - Device for the emptying of silos, especially those that contain chips - Google Patents

Device for the emptying of silos, especially those that contain chips Download PDF

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Publication number
EP0000937A1
EP0000937A1 EP78100714A EP78100714A EP0000937A1 EP 0000937 A1 EP0000937 A1 EP 0000937A1 EP 78100714 A EP78100714 A EP 78100714A EP 78100714 A EP78100714 A EP 78100714A EP 0000937 A1 EP0000937 A1 EP 0000937A1
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EP
European Patent Office
Prior art keywords
hood
emptying
conveyor
screw conveyor
cross
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
EP78100714A
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German (de)
French (fr)
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EP0000937B1 (en
Inventor
Hans-Peter Klinge
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.)
Ing Herbert Nolting and Co Kg Kesselbau GmbH
Nolting Ing Herbert GmbH
Original Assignee
Ing Herbert Nolting and Co Kg Kesselbau GmbH
Nolting Ing Herbert GmbH
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Application filed by Ing Herbert Nolting and Co Kg Kesselbau GmbH, Nolting Ing Herbert GmbH filed Critical Ing Herbert Nolting and Co Kg Kesselbau GmbH
Publication of EP0000937A1 publication Critical patent/EP0000937A1/en
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Publication of EP0000937B1 publication Critical patent/EP0000937B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G65/00—Loading or unloading
    • B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
    • B65G65/34—Emptying devices
    • B65G65/40—Devices for emptying otherwise than from the top
    • B65G65/46—Devices for emptying otherwise than from the top using screw conveyors
    • B65G65/466—Devices for emptying otherwise than from the top using screw conveyors arranged to be movable

Definitions

  • the invention relates to a device for emptying silos, in particular chip silos, with a screw conveyor with conveying tips that rotates in the bottom area of the silo in a plane or on a conical jacket and feeds the material to an emptying shaft, the emptying shaft extending from approximately to a hood rotating with the screw conveyor the screw cross section is kept closed.
  • the invention has for its object to further develop and improve the known devices of the type concerned, as described for example in CH-PS 516 457.
  • the well-known Device has proven itself in operation.
  • the specific object of the invention is to design the known device in such a way that the aforementioned blocking can no longer occur in the case of moist fine chips.
  • the invention consists in that the hood has a cross-section in the form of a spiral, the recess of which is from the largest to the smallest radius in the plane of the axis of the screw conveyor, and the continuously increasing radius of the spiral hood lies in the direction of rotation of the hood.
  • the design of the hood according to the invention ensures that the worm, which, with its front worm threads, as seen from above, lies in front of the recess and eats into the material (chips) and at the same time the material is rotated in the direction of the screw conveyor axis to the emptying shaft and the screw conveyor itself is rotated with a hood about a vertical axis.
  • the hood which is spiral in cross-section and which practically represents a wedge in the unwound state, continuously detaches itself from the surrounding chip material, which means that blocking is prevented.
  • the device 10 for emptying chip silos 11, dedusting systems or the like is detachably arranged in the bottom area of the chip silo 11 and has a, in the emptying shaft 12 forming Silo bottom 11a to be attached to the shaft casing 13; a screw conveyor 14 rotating and axially rotating on a plane, preferably a horizontal plane or a conical jacket, with exchangeable conveyor tips 14a, feeds the chips from the silo 11 to the emptying shaft 12, from where it is conveyed by means of fans 15 via channels (transport routes) 16 to an incineration plant becomes.
  • the worm 14 rotates preferably about a vertical axis and rolls on the silo bottom 11a; the bearing point of the screw conveyor 14 extends in the region of the discharge shaft 12 and the axis of rotation for the screw conveyor 14 advantageously coincides with the longitudinal axis of the discharge shaft 12.
  • the emptying shaft 12 is kept closed by a hood 17 rotating with the screw conveyor 14 except for approximately the screw cross section.
  • the hood 17 grips with a recess serving as an insertion opening 18 over the shaft-side end region of the screw conveyor 14, so that the chips to be discharged can only be moved by means of the screw conveyor 14 into the emptying shaft 12 through the insertion opening 18.
  • the insertion opening 18 of the hood 17 is formed by an opening in the cylindrical hood shell corresponding to the screw diameter, the opening on the underside towards the shaft 12 through vertical, parallel ones tangential edges (cuts) is open and its opening edge corresponds to an upside-down U.
  • the cross section of the hood 17 is in the form of a spiral, the recess of which lies from the largest to the smallest radius in the plane of the axis of the screw conveyor.
  • the radius of the spiral hood increases continuously in the direction of rotation thereof.
  • the hood has on the lower shaft-side edge region of its lateral surface a sealing part extending around the insertion opening 18, such as brush strip 19, which slides along a peripheral edge 13a (sliding surface) of the shaft jacket 13 and thus the emptying shaft 12 in the area of contact with the hood 17 opposite the Seals silo room.
  • the hood 17 is equipped with a conical sliding surface 20 which extends above the screw 14 and represents the hood cover, the conical tip of which coincides with the axis of rotation of the hood.
  • a conveyor part 21 which rotates faster than the hood 17, such as a conveyor cross, and which is equipped with conveyor vanes which are oriented obliquely to the axis of rotation and project beyond the hood jacket (hood diameter) at the end; a cross-sectional axis of each wing extends obliquely to the axis of rotation.
  • the conveyor part 21 rotates in a horizontal plane at a distance from the hood sliding surface 20, so that between the hood sliding surface 20 and the conveyor part 21 Chip material pad forms, which supports the concentricity of the screw conveyor 14; through the faster rotating than the hood 17 conveyor part 21, its inclined wing and the tapered sliding surface 20, the chip material exerts a thrust on the hood 17, whereby its rotational speed and thus the concentricity of the screw conveyor 14 is increased in a certain range.
  • the screw conveyor 14 and the hood 17 are fastened to a common drive head 22 arranged within the hood 17 and / or the emptying shaft 12 for rotational movement, so that the screw 14 and the hood 17 are coupled in terms of movement; the axial rotary movement of the screw conveyor 14 can be carried out by means of bevel gears or the like arranged inside the drive head 22.
  • a conveying part 23, such as a conveying cross, is rotatably mounted, which feeds the chip material moved into the emptying shaft 12 to one or more through openings 24 through which the chip material can get into the channels 16.
  • the lower conveyor part 23 is connected in terms of movement to the upper conveyor part 21 and both conveyor parts 21, 23 are driven independently of the hood and screw rotation.
  • the screw conveyor 14 rotates, the chips located in the silo 11 are conveyed by the latter to the insertion opening 18 by means of their rotary movement and can pass through this insertion opening 18 into the hood 17 and into the Emptying shaft 12 arrive.
  • the conveyor part 21, which rotates independently of the screw and hood rotation, serves as a loosening cross and prevents the chip material from encrusting or the formation of chip bridges above the hood 17, at the same time supporting the screw concentricity.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)

Abstract

1. Device for the emptying of bins, particularly swarf bins, with a conveyor worm provided with conveyor points and rotating in a plane or on a conical surface and guiding the material to an emptying shaft passage, the emptying shaft passage being kept closed as far as approximately the cross-section of the conveyor worm by a hood rotating with the conveyor worm, characterised in that in cross-section the hood (17) has the form of a spiral of which the discontinuity from the greatest to the smallest radius lies in the plane of the axis of the conveyor worm (14), and wherein the continuously increasing radius of the spiral-shaped hood lies in the direction of rotation of the hood.

Description

Die Erfindung betrifft eine Vorrichtung zum Entleeren von Silos, insbesondere Spänesilos, mit einer im Bodenbereich des Silos in einer Ebene oder auf einem Kegelmantel rotierenden, das Gut einem Entleerungsschacht zuführenden Förderschnecke mit Förderspitzen, wobei der Entleerungsschacht von einer mit der Förderschnecke rotierenden Haube bis auf annähernd den Schneckenquerschnitt geschlossen gehalten ist.The invention relates to a device for emptying silos, in particular chip silos, with a screw conveyor with conveying tips that rotates in the bottom area of the silo in a plane or on a conical jacket and feeds the material to an emptying shaft, the emptying shaft extending from approximately to a hood rotating with the screw conveyor the screw cross section is kept closed.

Der Erfindung liegt die Aufgabe zugrunde, die bekannten Vorrichtungen der sie betreffenden Art, wie sie beispielsweise in der CH-PS 516 457 beschrieben sind, weiterzuentwickeln und zu verbessern. Die bekannte Vorrichtung hat sich im Betrieb durchaus bewährt.The invention has for its object to further develop and improve the known devices of the type concerned, as described for example in CH-PS 516 457. The well-known Device has proven itself in operation.

Es hat sich jedoch herausgestellt, dass bei bestimmten Spänearten, insbesondere bei feinen und erst recht bei feuchten Spänen, leicht Blockierung der mit der Förderschnecke um eine senkrechte Achse rotierenden Haube eintritt. Dies deshalb, weil die die Haube umgebenden feinen feuchten Späne durch den auf ihnen lastenden Druck der Spänesäule im Silo stark zusammengepresst und an die Haube gepresst werden, so dass sie wie BremsBacken auf Bremstrommeln auf die Haube eine starke Bremswirkung ausüben. Diese Bremswirkung kann im Extremfall so gross werden, dass die Haube und damit die Förderschnecke in ihrer Rotation um die senkrechte Achse blockiert wird.However, it has been found that with certain types of chips, in particular fine and especially wet chips, the hood rotating with the screw conveyor around a vertical axis is easily blocked. This is because the fine, moist chips surrounding the hood are strongly pressed together by the pressure of the chip column in the silo and pressed against the hood, so that they exert a strong braking effect on the hood like brake shoes on brake drums. In extreme cases, this braking effect can become so great that the hood and thus the screw conveyor are blocked in their rotation about the vertical axis.

Die spezielle Aufgabe der Erfindung liegt nun darin, die bekannte Vorrichtung derart auszubilden, dass das vorgenannte Blockieren bei feuchten feinen Spänen nicht mehr eintreten kann.The specific object of the invention is to design the known device in such a way that the aforementioned blocking can no longer occur in the case of moist fine chips.

Die Erfindung besteht darin, dass die Haube im Querschnitt die Form einer Spirale aufweist, deren Rücksprung vom grössten auf den kleinsten Radius in der Ebene der Achse der Förderschnecke liegt, und wobei der sich stetig vergrössernde Radius der spiralförmigen Haube in Rotationsrichtung der Haube liegt.The invention consists in that the hood has a cross-section in the form of a spiral, the recess of which is from the largest to the smallest radius in the plane of the axis of the screw conveyor, and the continuously increasing radius of the spiral hood lies in the direction of rotation of the hood.

Durch die erfindungsgemässe Ausbildung der Haube wird erreicht, dass die Schnecke, die mit ihren vorderen - von oben gesehen - vor dem Rücksprung liegenden Schneckengängen sich in das Gut (Späne) hineinfrisst und dabei gleichzeitig das Gut in Richtung Förderschneckenachse zum Entleerungsschacht und die Förderschnecke selber mit Haube um eine senkrechte Achse in Rotation versetzt. Die im Querschnitt spiralförmige Haube, die im abgewickelten Zustand praktisch einen Keil darstellt, löst sich kontinuierlich von dem umgebenden Spangut, wodurch ein Blockieren ausgeschlossen ist.The design of the hood according to the invention ensures that the worm, which, with its front worm threads, as seen from above, lies in front of the recess and eats into the material (chips) and at the same time the material is rotated in the direction of the screw conveyor axis to the emptying shaft and the screw conveyor itself is rotated with a hood about a vertical axis. The hood, which is spiral in cross-section and which practically represents a wedge in the unwound state, continuously detaches itself from the surrounding chip material, which means that blocking is prevented.

Die Erfindung kann in verschiedener Weise ausgeführt werden. Sie wird in der anliegenden Zeichnung an einem Ausführungsbeispiel erläutert, und zwar zeigt:

  • Figur 1 eine schematische Darstellung einer in einem Spänesilo angeordneten Vorrichtung zum Entleeren desselben,
  • Figur 2 einen teilweisen Schnitt derselben Vorrichtung mit einer Förderschnecke und einer einen Entleerungsschacht überdeckenden Haube,
  • Figur 3 einen schematischen Schnitt nach Linie III-III der Figur 2 zur Darstellung der spiralförmigen Haube im Querschnitt mit Förderschnecke unter Fortlassung der übrigen Teile.
The invention can be carried out in various ways. It is explained in the attached drawing using an exemplary embodiment, which shows:
  • FIG. 1 shows a schematic representation of a device for emptying the same arranged in a chip silo,
  • FIG. 2 shows a partial section of the same device with a screw conveyor and a hood covering an emptying shaft,
  • Figure 3 is a schematic section along line III-III of Figure 2 to show the spiral hood in cross section with screw conveyor while leaving out the other parts.

Die Vorrichtung 10 zum Entleeren von Spänesilos 11, Entstaubungsanlagen oder dergleichen ist in dem Bodenbereich des Spänesilos 11 lösbar angeordnet und weist einen, einen Entleerungsschacht12 bildenden, in dem Siloboden 11a zu befestigenden Schachtmantel 13 auf; eine auf einer Ebene, vorzugsweise einer waagerechten Ebene oder einem Kegelmantel rotierende und sich axial drehende Förderschnecke 14 mit auswechselbaren Förderspitzen 14a führt das Spänegut des Silos 11 dem Entleerungsschacht 12 zu, von wo es mittels Gebläse 15 über Kanäle (Transportwege) 16 zu einer Verbrennungsanlage transportiert wird.The device 10 for emptying chip silos 11, dedusting systems or the like is detachably arranged in the bottom area of the chip silo 11 and has a, in the emptying shaft 12 forming Silo bottom 11a to be attached to the shaft casing 13; a screw conveyor 14 rotating and axially rotating on a plane, preferably a horizontal plane or a conical jacket, with exchangeable conveyor tips 14a, feeds the chips from the silo 11 to the emptying shaft 12, from where it is conveyed by means of fans 15 via channels (transport routes) 16 to an incineration plant becomes.

Die Schnecke 14 rotiert in bevorzugter Weise um eine senkrechte Achse und wälzt sich dabei auf dem Siloboden 11a ab; der Lagerpunkt der Förderschnecke 14 erstreckt sich im Bereich des Entleerungsschachtes 12 und die Rotationsachse für die Förderschnecke 14 fällt vorteilhafterweise mit der Längsachse des Entleerungsschachtes 12 zusammen.The worm 14 rotates preferably about a vertical axis and rolls on the silo bottom 11a; the bearing point of the screw conveyor 14 extends in the region of the discharge shaft 12 and the axis of rotation for the screw conveyor 14 advantageously coincides with the longitudinal axis of the discharge shaft 12.

Der Entleerungsschacht 12 ist von einer mit der Förderschnecke 14 rotierenden Haube 17 bis auf annähernd dem Schneckenquerschnitt geschlossen gehalten. Dabei fasst die Haube 17 mit einer als Einführöffnung 18 dienenden Aussparung über den schachtseitigen Endbereich der Förderschnecke 14, so dass das auszutragende Spänegut mittels der Förderschnecke 14 nur durch die Einführöffnung 18 in den Entleerungsschacht 12 bewegt werden kann.The emptying shaft 12 is kept closed by a hood 17 rotating with the screw conveyor 14 except for approximately the screw cross section. The hood 17 grips with a recess serving as an insertion opening 18 over the shaft-side end region of the screw conveyor 14, so that the chips to be discharged can only be moved by means of the screw conveyor 14 into the emptying shaft 12 through the insertion opening 18.

Die Einführöffnung 18 der Haube 17 ist von einer dem Schneckendurchmesser entsprechenden Öffnung im zylindrischen Haubenmantel gebildet, die untenseitig zum Schacht 12 hin durch senkrechte, parallellaufende tangentiale Kanten (Schnitte) geöffnet ist und ihre Öffnungskante einem kopfstehenden U entspricht.The insertion opening 18 of the hood 17 is formed by an opening in the cylindrical hood shell corresponding to the screw diameter, the opening on the underside towards the shaft 12 through vertical, parallel ones tangential edges (cuts) is open and its opening edge corresponds to an upside-down U.

Die Haube 17 weist im Querschnitt die Form einer Spirale auf, deren Rücksprung vom grössten auf den kleinsten Radius in der Ebene der Achse der Förderschnecke liegt. Der Radius der spiralförmigen Haube vergrössert sich stetig in Rotationsrichtung derselben. Die Haube weist an dem unteren schachtseitigen Randbereich ihrer Mantelfläche ein bis auf die Einführöffnung 18 umlaufendes Dichtteil, wie Bürstenband 19 auf, das auf einem umlaufenden Rand 13a (Gleitfläche) des Schachtmantels 13 entlanggleitet und den Entleerungsschacht 12 somit im Berührungsbereich mit der Haube 17 gegenüber dem Siloraum abdichtet.The cross section of the hood 17 is in the form of a spiral, the recess of which lies from the largest to the smallest radius in the plane of the axis of the screw conveyor. The radius of the spiral hood increases continuously in the direction of rotation thereof. The hood has on the lower shaft-side edge region of its lateral surface a sealing part extending around the insertion opening 18, such as brush strip 19, which slides along a peripheral edge 13a (sliding surface) of the shaft jacket 13 and thus the emptying shaft 12 in the area of contact with the hood 17 opposite the Seals silo room.

Die Haube 17 ist mit einer oberhalb der Schnecke 14 sich erstreckenden, die Haubendecke darstellenden kegeligen Gleitfläche 20 ausgestattet, deren Kegelspitze mit der Hauben-Drehachse zusammenfällt. Oberhalb der Haube 17 erstreckt sich ein schneller als die Haube 17 rotierendes Förderteil 21, wie Förderkreuz, das mit schräg zur Drehachse gerichteten und endseitig über den Haubenmantel (Haubendurchmesser) hinausragenden Förderflügeln ausgestattet ist; eine Querschnittachse jedes Flügels erstreckt sich schräg zur Drehachse.The hood 17 is equipped with a conical sliding surface 20 which extends above the screw 14 and represents the hood cover, the conical tip of which coincides with the axis of rotation of the hood. Above the hood 17 extends a conveyor part 21 which rotates faster than the hood 17, such as a conveyor cross, and which is equipped with conveyor vanes which are oriented obliquely to the axis of rotation and project beyond the hood jacket (hood diameter) at the end; a cross-sectional axis of each wing extends obliquely to the axis of rotation.

Das Förderteil 21 dreht sich in waagerechter Ebene im Abstand zur Hauben-Gleitfläche 20, so dass sich zwischen Hauben-Gleitfläche 20 und Förderteil 21 ein Spänegutpolster bildet, das den Rundlauf der Förderschnecke 14 unterstützt; durch das sich schneller als die Haube 17 drehende Förderteil 21, dessen schrägstehende Flügel und die kegelige Gleitfläche 20 übt das Spänegutpolster eine Schubwirkung auf die Haube 17 aus, wodurch dessen Rotationsgeschwinügkeit und somit der Rundlauf der Förderschnecke 14 in einem gewissen Bereich erhöht wird.The conveyor part 21 rotates in a horizontal plane at a distance from the hood sliding surface 20, so that between the hood sliding surface 20 and the conveyor part 21 Chip material pad forms, which supports the concentricity of the screw conveyor 14; through the faster rotating than the hood 17 conveyor part 21, its inclined wing and the tapered sliding surface 20, the chip material exerts a thrust on the hood 17, whereby its rotational speed and thus the concentricity of the screw conveyor 14 is increased in a certain range.

Die Förderschnecke 14 und die Haube 17 sind an einem gemeinsamen innerhalb der Haube 17 und/oder des Entleerungsschachtes 12 angeordneten Antriebskopf 22 zur Rotationsbewegung befestigt, so dass die Schnecke 14 und die Haube 17 bewegungsmässig gekoppelt wird; die axiale Drehbewegung der Förderschnecke 14 lässt sich mittels innerhalb des Antriebskopfes 22 angeordneter Kegelräder oder dergleichen vornehmen.The screw conveyor 14 and the hood 17 are fastened to a common drive head 22 arranged within the hood 17 and / or the emptying shaft 12 for rotational movement, so that the screw 14 and the hood 17 are coupled in terms of movement; the axial rotary movement of the screw conveyor 14 can be carried out by means of bevel gears or the like arranged inside the drive head 22.

In dem Entleerungsschacht 12 ist unterhalb der Haube 17 beziehungsweise unterhalb des Antriebskopfes 22 ein Förderteil 23, wie Förderkreuz drehbar gelagert, das das in den Entleerungsschacht 12 bewegte Spänegut ein oder mehreren Durchfallöffnungen 24 zuführt, durch die das Spänegut in die Kanäle 16 gelangen kann.In the emptying shaft 12, below the hood 17 or below the drive head 22, a conveying part 23, such as a conveying cross, is rotatably mounted, which feeds the chip material moved into the emptying shaft 12 to one or more through openings 24 through which the chip material can get into the channels 16.

Das untere Förderteil 23 ist mit dem oberen Förderteil 21 bewegungsmässig verbunden und beide Förderteile 21, 23 werden unabhängig von der Hauben- und Schneckendrehung angetrieben. Beim Rundlauf der Förderschnecke 14 wird das in dem Silo 11 befindliche Spänegut von derselben durch deren Drehbewegung zur Einführöffnung 18 hingefördert und kann durch diese Einführöffnung 18 in die Haube 17 und in den Entleerungsschacht 12 gelangen. Das sich unabhängig von der Schnecken- und Haubenrotation drehende Förderteil 21 dient als Lockerungskreuz und verhindert ein Verkrusten des Spänegutes beziehungsweise eine Spanbrückenbildung oberhalb der Haube 17, wobei gleichzeitig der Schneckenrundlauf unterstützt wird.The lower conveyor part 23 is connected in terms of movement to the upper conveyor part 21 and both conveyor parts 21, 23 are driven independently of the hood and screw rotation. When the screw conveyor 14 rotates, the chips located in the silo 11 are conveyed by the latter to the insertion opening 18 by means of their rotary movement and can pass through this insertion opening 18 into the hood 17 and into the Emptying shaft 12 arrive. The conveyor part 21, which rotates independently of the screw and hood rotation, serves as a loosening cross and prevents the chip material from encrusting or the formation of chip bridges above the hood 17, at the same time supporting the screw concentricity.

Durch die den Entleerungsschacht 12 bis auf annähernd den Schneckenquerschnitt zum Guteintritt verschliessende Haube 17 wird ein unkontrolliertes Späneeindringen in den Entleerungsschacht 12 und in die Transportwege (Kanäle) 16 zur Verbrennungsanlage verhindert; gleichzeitig wird ein Zusetzen beziehungsweise ein Verstopfen der Vorrichtung ausgeschlossen, da nur im Bereich der Förderschnecke 14 Späne in den Entleerungsschacht 12 gelangen können.An uncontrolled chip penetration into the emptying shaft 12 and into the transport paths (channels) 16 to the incineration plant is prevented by the hood 17 which closes the emptying shaft 12 except for approximately the screw cross-section at the material inlet. at the same time clogging or clogging of the device is excluded, since chips can only get into the emptying shaft 12 in the area of the screw conveyor.

Es ist möglich, den Antrieb der Förderschnecke und der Haube zur Rotation verschiedenartig auszuführen und die Bewegung der Förderteile unterschiedlich vorzusehen; weiterhin lässt sich anstelle des Bürstenbandes als Dichtteil auch ein andersartiges flexibles oder elastisches Teil, wie Gummi- oder Kunststoffprofil vorsehen.It is possible to design the drive of the screw conveyor and the hood for rotation in different ways and to provide the movement of the conveyor parts differently; Furthermore, instead of the brush tape as a sealing part, a different type of flexible or elastic part, such as a rubber or plastic profile, can also be provided.

Claims (1)

Vorrichtung zum Entleeren von Silos, insbesondere Spänesilos, mit einer im Bodenbereich des Silos in einer Ebene oder auf einem Kegelmantel rotierenden, das Gut einem Entleerungsschacht zuführenden Förderschnecke mit Förderspitzen, wobei der Entleerungsschacht von einer mit der Förderschnecke rotierenden Haube bis auf annähernd dem Schneckenquerschnitt geschlossen gehalten ist, dadurch gekennzeichnet, dass die Haube (17) im Querschnitt die Form einer Spirale aufweist, deren Rücksprung vom grössten auf den kleinsten Radius in der Ebene der Achse der Förderschnecke (14) liegt, und wobei der sich stetig vergrössernde Radius der spiralförmigen Haube in Rotationsrichtung der Haube liegt.Device for emptying silos, in particular chip silos, with a screw conveyor with conveying tips that rotates in the floor area of the silo in a plane or on a conical jacket and feeds the material to an emptying shaft, the emptying shaft being kept closed by a hood rotating with the screw conveyor up to approximately the screw cross-section characterized in that the hood (17) has a cross-section in the form of a spiral, the recess of which is from the largest to the smallest radius in the plane of the axis of the screw conveyor (14), and the continuously increasing radius of the spiral hood in Direction of rotation of the hood is.
EP78100714A 1977-08-24 1978-08-21 Device for the emptying of silos, especially those that contain chips Expired EP0000937B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2738069 1977-08-24
DE2738069A DE2738069C3 (en) 1977-08-24 1977-08-24 Device for emptying silos, in particular chip silos

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EP0000937A1 true EP0000937A1 (en) 1979-03-07
EP0000937B1 EP0000937B1 (en) 1980-01-09

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AT (1) AT360426B (en)
DE (1) DE2738069C3 (en)
IT (1) IT1158995B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4314675A (en) * 1980-01-07 1982-02-09 Brock Manufacturing, Inc. Grain bin discharge guard
FR2626262A1 (en) * 1988-01-25 1989-07-28 Starvrac Extractor for storage silo

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004046993B4 (en) * 2004-09-28 2007-04-26 Shw Storage & Handling Solutions Gmbh Device for conveying bulk material

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2041074A3 (en) * 1969-03-13 1971-01-29 Wennberg Olov
CH516457A (en) * 1969-07-08 1971-12-15 Herbert Nolting Kessel Und App Device for emptying silos, in particular chip silos

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2041074A3 (en) * 1969-03-13 1971-01-29 Wennberg Olov
CH516457A (en) * 1969-07-08 1971-12-15 Herbert Nolting Kessel Und App Device for emptying silos, in particular chip silos

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4314675A (en) * 1980-01-07 1982-02-09 Brock Manufacturing, Inc. Grain bin discharge guard
FR2626262A1 (en) * 1988-01-25 1989-07-28 Starvrac Extractor for storage silo

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Publication number Publication date
DE2738069B2 (en) 1980-03-27
IT1158995B (en) 1987-02-25
EP0000937B1 (en) 1980-01-09
DE2738069C3 (en) 1980-12-04
ATA614978A (en) 1980-05-15
DE2738069A1 (en) 1979-03-08
IT7826989A0 (en) 1978-08-24
AT360426B (en) 1980-01-12

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