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EP0031902B1 - Pneumatic mixing silo - Google Patents

Pneumatic mixing silo Download PDF

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Publication number
EP0031902B1
EP0031902B1 EP80107557A EP80107557A EP0031902B1 EP 0031902 B1 EP0031902 B1 EP 0031902B1 EP 80107557 A EP80107557 A EP 80107557A EP 80107557 A EP80107557 A EP 80107557A EP 0031902 B1 EP0031902 B1 EP 0031902B1
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EP
European Patent Office
Prior art keywords
mixing
silo
chamber
conveyor
outlet
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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.)
Expired
Application number
EP80107557A
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German (de)
French (fr)
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EP0031902A1 (en
Inventor
Wolfgang Kluger
Heinz Hüser
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ThyssenKrupp Industrial Solutions AG
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Krupp Polysius AG
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Publication of EP0031902A1 publication Critical patent/EP0031902A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/40—Mixers using gas or liquid agitation, e.g. with air supply tubes
    • B01F33/4092—Storing receptacles provided with separate mixing chambers

Definitions

  • the invention relates to a pneumatic mixing silo, comprising a storage space provided with floor ventilation and at least one material inlet in the upper area and a mixing room which is arranged centrally in the lower area of the silo and is also provided with floor ventilation and which is connected to the storage area via material passage openings provided in its lower area and has at least one good outlet.
  • a mixing silo of the type mentioned above is known, for example, from the magazine “Aufrungstechnik", issue 1/1973, p. 8.
  • the mixing chamber is formed by a relatively small chamber, which is closed at the top by a conical cover provided with a ventilation pipe and the outlet of which is located in the region of the bottom of the chamber.
  • the residence time of the goods in this mixing chamber is relatively short; the mixing effect is accordingly not completely satisfactory in all cases. If the material fed to the mixing silo is very uneven and if the material is difficult to mix, it is generally necessary to premix the material in the storage room. Furthermore, since both the material inlet and the material outlet are provided in the lower region of the mixing chamber, there is a risk that strands of the material from the material inlet that are not sufficiently mixed get directly into the material outlet.
  • This disadvantage also has another known mixing silo (DE-A-2 657 597), in which the mixing room located centrally in the lower part of the storage room is connected to the storage room via material passage openings located in its lower area and on the one hand to a relaxation chamber forming the material outlet is connected via openings in the lower region of the mixing chamber for passage of material and, on the other hand, via openings near the ceiling of the mixing chamber for ventilation.
  • this known mixing silo that individual parts of the crop penetrate the mixing area too quickly and do not experience the required homogenization.
  • This disadvantage also affects another known mixing silo (DE-A-2 724 928), which contains a homogenization chamber in the lower area of the silo space at a distance below a conical hood, to which the material is fed via metering devices at about half the height of the homogenization chamber and from which it is drawn off either via a crop outlet also located at about half the height of the chamber below the inlet openings and just below the material level or via a further crop outlet provided as a bypass in the bottom region of the homogenization chamber.
  • DE-A-2 724 928 contains a homogenization chamber in the lower area of the silo space at a distance below a conical hood, to which the material is fed via metering devices at about half the height of the homogenization chamber and from which it is drawn off either via a crop outlet also located at about half the height of the chamber below the inlet openings and just below the material level or via a further crop outlet provided as a bypass in the bottom region of the homogenization chamber.
  • the invention is therefore based on the object, while avoiding these deficiencies, to design a mixing silo of the type mentioned in such a way that a substantial improvement in the mixing action is achieved and an excellent mixing action is achieved even when the material is inhomogeneous and / or difficult to mix.
  • the mixing space in the area of the silo ceiling has an additional feed inlet which serves for the direct addition of correction material.
  • the wall separating the mixing space from the storage space extends as a preferably cylindrical, load-bearing wall over the entire height of the silo from the silo floor to the silo ceiling. If the silo ceiling is supported in the middle in this way, the thickness of the ceiling can be kept considerably lower.
  • the height of the mixing space overflow can also be adjusted.
  • the residence time of the goods in the mixing room can be influenced within wide limits and thus the mixing effect can be optimally adapted to the respective application. In this way, larger fluctuations in the supply of goods to the storage room can also be easily accommodated.
  • the drawing shows this exemplary embodiment of the pneumatic mixing silo 1 in a largely schematic representation.
  • This mixing silo 1 can generally have a suitable polygonal cross-sectional shape or - as is preferred in the exemplary embodiment shown - an approximately circular cross-sectional shape.
  • the mixing silo 1 contains a storage space 2 with an annular cross section and a mixing space 3 arranged in the center thereof, which is connected in its lower area to the storage space 2 via through openings 4. Both the storage room 2 and the mixing room 3 are equipped on their floor with conventional devices 5 and 6 for floor ventilation.
  • the floor 7 of the mixing room 3 is preferably somewhat lower than the floor 8 of the storage room 2.
  • the mixing silo 1 can be provided with a single feed inlet 9 or also with a plurality of feed inlets, each feed inlet 9 being arranged in the silo ceiling 10 and wherein - at several good inlets - all good inlets are evenly distributed over the silo ceiling 10 so that each good inlet 9 opens into the storage space 2.
  • the wall 11 separating the mixing space 3 from the storage space 2 is expediently designed in the form of a cylindrical, load-bearing wall which extends over the entire height of the silo 1 from the silo floor (7, 8) to the silo ceiling 10. This results in a mixing space 3 which is in the form of a cylindrical silo cell arranged centrally in the storage space 2; the cylindrical wall 11 can simultaneously support the silo ceiling 10 in its central region.
  • the silo ceiling 10 also contains, in its area covering the mixing area 3, a further material inlet 12, via which correction material (arrow 13) can be entered directly into the mixing area 3.
  • the material outlet 14 of the mixing silo 1 is designed as an overflow of the mixing space 3.
  • the height of this mixing space overflow referred to below as the main outlet, can be designed to be adjustable, ie in adaptation to the required operating conditions.
  • the main outlet 14 is located at a height position corresponding to about 1/3 of the total height of the mixing silo 1, wherein said height position, however - as mentioned - may well be lower or higher.
  • the mixing chamber 3 also has an additional material outlet 15 in the region of its base 7, which is used for residual emptying and is referred to below as the remaining outlet.
  • a discharge conveyor is assigned to both the main outlet 14 and the remaining outlet 15.
  • These take-off conveyors can in principle be formed by any suitable horizontal conveyor, but it is advisable, particularly in the case of a pneumatic mixing silo, to provide pneumatic conveyor troughs 16 (for the main outlet 14) and 17 (for the remaining outlet 15) as the extraction conveyor.
  • pneumatic conveyor troughs 16, 17 can then be supplied in the same way as the floor ventilation devices 5, 6 from a common ventilation source.
  • the pneumatic conveying trough 16 of the main outlet 14 leads to a buffer container 18 which receives the goods before further conveying. So that the residual material to be discharged from the remaining outlet 15 or from its pneumatic conveying trough 17 can be conveyed together with the main material drawn off from the main outlet 14 or from its pneumatic conveying trough 16, it is advantageous in the exemplary embodiment described if the pneumatic conveying trough 17 of the remaining outlet 15 also includes the main outlet discharge conveyor 16 or with the downstream of this conveyor buffer tank 18 by a vertical conveyor, for. B. - as shown - is connected by an elevator 19. The material withdrawn from the mixing silo 1 can thus be withdrawn from a common point, namely the buffer container 18. The increased arrangement of this buffer container 18 favors the arrangement of fittings and other devices for a further conveying device, not shown.
  • the mixing silo 1 can have a common ventilation (cf. arrows 20) for the storage room 2 and the mixing room 3.
  • a common ventilation filter can be provided on the silo ceiling 10.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Storage Of Harvested Produce (AREA)

Description

Die Erfindung betrifft ein pneumatisches Mischsilo, enthaltend einen mit Bodenbelüftung sowie wenigstens einem Gutzulauf im oberen Bereich versehenen Vorratsraum sowie einen im unteren Bereich des Silos mittig angeordneten, gleichfalls mit Bodenbelüftung versehenen Mischraum, der über in seinem unteren Bereich vorgesehene Gutdurchtrittsöffnungen mit dem Vorratsraum verbunden ist und wenigstens einen Gutauslauf aufweist.The invention relates to a pneumatic mixing silo, comprising a storage space provided with floor ventilation and at least one material inlet in the upper area and a mixing room which is arranged centrally in the lower area of the silo and is also provided with floor ventilation and which is connected to the storage area via material passage openings provided in its lower area and has at least one good outlet.

Ein Mischsilo der vorstehend genannten Art ist beispielsweise aus der Zeitschrift »Aufbereitungstechnik«, Heft 1/1973, S. 8, bekannt. Der Mischraum wird hierbei durch eine verhältnismäßig kleine Kammer gebildet, die nach oben durch eine mit einem Entlüftungsrohr versehene konische Abdeckung abgeschlossen ist und deren Gutauslauf sich im Bereich des Bodens der Kammer befindet. Die Aufenthaltszeit des Gutes in dieser Mischkammer ist verhältnismäßig kurz; die Mischwirkung ist demgemäß nicht in allen Fällen völlig befriedigend. Bei großer Ungleichmäßigkeit des dem Mischsilo zugeführten Gutes sowie bei schwer zu mischendem Gut ist im allgeme!r.en eine weitgehende Vormischung des Gutes im Vorratsraum erforderlich. Da ferner sowohl der Gutzulauf als auch der Gutauslauf im unteren Bereich der Mischkammer vorgesehen sind, besteht die Gefahr, daß nicht nicht ausreichend durchmischte Strähnen des Gutes vom Gutzulauf unmittelbar in den Gutauslauf gelangen.A mixing silo of the type mentioned above is known, for example, from the magazine "Aufbereitungstechnik", issue 1/1973, p. 8. The mixing chamber is formed by a relatively small chamber, which is closed at the top by a conical cover provided with a ventilation pipe and the outlet of which is located in the region of the bottom of the chamber. The residence time of the goods in this mixing chamber is relatively short; the mixing effect is accordingly not completely satisfactory in all cases. If the material fed to the mixing silo is very uneven and if the material is difficult to mix, it is generally necessary to premix the material in the storage room. Furthermore, since both the material inlet and the material outlet are provided in the lower region of the mixing chamber, there is a risk that strands of the material from the material inlet that are not sufficiently mixed get directly into the material outlet.

Diesen Nachteil besitzt auch ein weiteres bekanntes Mischsilo (DE-A-2 657 597), bei dem der zentral im unteren Teil des Vorratsraumes befindliche Mischraum über in seinem unteren Bereich befindliche Gutdurchtrittsöffnungen mit dem Vorratsraum in Verbindung steht und mit einer den Gutauslauf bildenden Entspannungskammer einerseits über zum Gutdurchtritt dienende Öffnungen im unteren Bereich des Mischraumes und andererseits über zum Luftdurchtritt dienende Öffnungen nahe der Decke des Mischraumes verbunden ist. Angesichts der etwa gleichen Höhenlage von Gutzulauf und Gutauslauf besteht damit auch bei diesem bekannten Mischsilo die Gefahr, daß einzelne Gutpartieren den Mischraum zu rasch durchsetzen und nicht die erforderliche Homogenisierung erfahren.This disadvantage also has another known mixing silo (DE-A-2 657 597), in which the mixing room located centrally in the lower part of the storage room is connected to the storage room via material passage openings located in its lower area and on the one hand to a relaxation chamber forming the material outlet is connected via openings in the lower region of the mixing chamber for passage of material and, on the other hand, via openings near the ceiling of the mixing chamber for ventilation. In view of the approximately same height of the feed and discharge, there is also the danger with this known mixing silo that individual parts of the crop penetrate the mixing area too quickly and do not experience the required homogenization.

Mit diesem Nachteil ist schließlich auch ein weiteres bekanntes Mischsilo (DE-A-2 724 928) behaftet, das im unteren Bereich des Siloraumes mit Abstand unter einer Kegelhaube eine Homogenisierkammer enthält, der das Gut über Dosierorgane etwa auf halber Höhe der Homogenisierkammer zugeführt wird und aus der es entweder über einen gleichfalls auf etwa halber Höhe der Kammer unterhalb der Zulauföffnungen und dicht unter dem Materialspiegel befindlichen Gutablauf oder über einen im Bodenbereich der Homogenisierkammer als Bypass vorgesehenen weiteren Gutablauf abgezogen wird. Da sich auch hier Gutzulauf und Gutauslauf der Homogenisierkammer auf etwa gleicher Höhe befinden, besteht die Gefahr, daß gerade in die Homogenisierkammer eingeführte Gutsträhnen sogleich durch den dicht unter den Zulauföffnungen befindlichen GutablaJf wieder abgezogen werden, ohne zuvor eine atsreichende Homogenisierbewegung innerhalb der Homogenisierkammer zu erfahren. Nachteilig ist bei diesem bekannten Mischsilo weiterhin der verhältnismäßig komplizierte Aufbau und der beträchtliche Raumbedarf.This disadvantage also affects another known mixing silo (DE-A-2 724 928), which contains a homogenization chamber in the lower area of the silo space at a distance below a conical hood, to which the material is fed via metering devices at about half the height of the homogenization chamber and from which it is drawn off either via a crop outlet also located at about half the height of the chamber below the inlet openings and just below the material level or via a further crop outlet provided as a bypass in the bottom region of the homogenization chamber. Since the material inlet and outlet of the homogenizing chamber are also at approximately the same level, there is a risk that strands of material that have just been introduced into the homogenizing chamber will be pulled off again immediately through the material outlet located just below the inlet openings, without first experiencing an adequate homogenizing movement within the homogenizing chamber. A disadvantage of this known mixing silo is the relatively complicated structure and the considerable space requirement.

Der Erfindung liegt daher die Aufgabe zugrunde, unter Vermeidung dieser Mängel ein Mischsilo der eingangs genannten Art so auszubilden, daß eine wesentliche Verbesserung der Mischwirkung erzielt wird und auch bei starker Inhomogenität und/oder schwerer Mischbarkeit des Gutes eine ausgezeichnete Mischwirkung erreicht wird.The invention is therefore based on the object, while avoiding these deficiencies, to design a mixing silo of the type mentioned in such a way that a substantial improvement in the mixing action is achieved and an excellent mixing action is achieved even when the material is inhomogeneous and / or difficult to mix.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Gutauslauf als Überlauf des Mischraumes ausgebildet ist.This object is achieved in that the material outlet is designed as an overflow of the mixing space.

Man vermeidet auf diese Weise ein Hindurchschießen einzelner Gutsträhnen aus dem Vorratsraum in den Gutauslauf des Mischraumes und gewährleistet, daß das gesamte aus dem Vorratsraum in den Mischraum übertretende Gut an einer intensiven Durchmischung innerhalb des Mischraumes teilnimmt, ehe es zum Überlauf des Mischraumes und damit zum Gutauslauf gelangt.This avoids shooting through individual strands of material from the storage room into the outlet of the mixing room and ensures that all of the material passing from the storage room into the mixing room participates in intensive mixing within the mixing room before it overflows the mixing room and thus to the outlet reached.

Gemäß einer zweckmäßigen Ausgestaltung der Erfindung weist dabei der Mischraum im Bereich der Silodecke einen zur direkten Zugabe von Korrekturgut dienenden, zusätzlichen Gutzulauf auf. Dadurch ist es auf besonders einfache Weise möglich, eine gewünschte Korrektur der das Silo verlassenden Gutmischung verzögerungsfrei vorzunehmen.According to an expedient embodiment of the invention, the mixing space in the area of the silo ceiling has an additional feed inlet which serves for the direct addition of correction material. As a result, it is possible in a particularly simple manner to carry out a desired correction of the good mixture leaving the silo without delay.

In konstruktiver Hinsicht ist es ferner günstig, wenn sich die den Mischraum vom Vorratsraum trennende Wand als eine vorzugsweise zylindrische, tragende Wand über die gesamte Höhe des Silos vom Siloboden bis zur Silodecke erstreckt. Wird auf diese Weise die Silodecke mittig abgestützt, so kann die Stärke der Decke wesentlich geringer gehalten werden.From a design point of view, it is also advantageous if the wall separating the mixing space from the storage space extends as a preferably cylindrical, load-bearing wall over the entire height of the silo from the silo floor to the silo ceiling. If the silo ceiling is supported in the middle in this way, the thickness of the ceiling can be kept considerably lower.

Bei einer besonders vorteilhaften Ausgestaltung des erfindungsgemäßen Mischsilos ist ferner die Höhenlage des Mischraum-Überlaufes einstellbar. Auf diese Weise läßt sich die Aufenthaltszeit des Gutes im Mischraum in weiten Grenzen beeinflussen und damit die Mischwirkung dem jeweiligen Anwendungsfall optimal anpassen. Auf diese Weise können ferner auch größere Schwankungen im Gutzulauf zum Vorratsraum bequem aufgefangen werden.In a particularly advantageous embodiment of the mixing silo according to the invention, the height of the mixing space overflow can also be adjusted. In this way, the residence time of the goods in the mixing room can be influenced within wide limits and thus the mixing effect can be optimally adapted to the respective application. In this way, larger fluctuations in the supply of goods to the storage room can also be easily accommodated.

Diese und weitere Einzelheiten der Erfindung gehen aus der folgenden Beschreibung eines in der Zeichnung veranschaulichten Ausführungsbeispieles hervor.These and other details of the invention will become apparent from the following description of the drawing illustrated embodiment.

Die Zeichnung zeigt dieses Ausführungsbeispiel des pneumatischen Mischsilos 1 in weitgehend schematischer Darstellung. Dieses Mischsilo 1 kann generell eine geeignete polygonale Querschnittsform oder - wie es im dargestellten Ausführungsbeispiel bevorzugt wird - eine etwa kreisrunde Querschnittsform besitzen. Das Mischsilo 1 enthält dabei einen im Querschnitt ringförmigen Vorratsraum 2 sowie einen mittig dazu angeordneten Mischraum 3, der in seinem unteren Bereich über Durchtrittsöffnungen 4 mit dem Vorratsraum 2 verbunden ist. Sowohl der Vorratsraum 2 als auch der Mischraum 3 sind an ihrem Boden mit üblichen Einrichtungen 5 bzw. 6 für eine Bodenbelüftung ausgestattet. Der Boden 7 des Mischraumes 3 liegt dabei vorzugsweise etwas tiefer als der Boden 8 des Vorratsraumes 2. Das Mischsilo 1 kann mit einem einzigen Gutzulauf 9 oder auch mit mehreren Gutzuläufen versehen sein, wobei jeder Gutzulauf 9 in der Silodecke 10 angeordnet ist und wobei - bei mehreren Gutzuläufen - alle Gutzuläufe gleichmäßig über die Silodecke 10 so verteilt sind, daß jeder Gutzulauf 9 in den Vorratsraum 2 mündet.The drawing shows this exemplary embodiment of the pneumatic mixing silo 1 in a largely schematic representation. This mixing silo 1 can generally have a suitable polygonal cross-sectional shape or - as is preferred in the exemplary embodiment shown - an approximately circular cross-sectional shape. The mixing silo 1 contains a storage space 2 with an annular cross section and a mixing space 3 arranged in the center thereof, which is connected in its lower area to the storage space 2 via through openings 4. Both the storage room 2 and the mixing room 3 are equipped on their floor with conventional devices 5 and 6 for floor ventilation. The floor 7 of the mixing room 3 is preferably somewhat lower than the floor 8 of the storage room 2. The mixing silo 1 can be provided with a single feed inlet 9 or also with a plurality of feed inlets, each feed inlet 9 being arranged in the silo ceiling 10 and wherein - at several good inlets - all good inlets are evenly distributed over the silo ceiling 10 so that each good inlet 9 opens into the storage space 2.

Die den Mischraum 3 vom Vorratsraum 2 trennende Wand 11 ist zweckmäßigerweise in Form einer zylindrischen, tragenden Wand ausgebildet, die sich über die gesamte Höhe des Silos 1 vom Siloboden (7, 8) bis zur Silodecke 10 erstreckt. Es ergibt sich auf diese Weise ein Mischraum 3, der in Form einer zentral im Vorratsraum 2 angeordneten, zylindrischen Silozelle ausgebildet ist; die zylindrische Wand 11 kann dabei die Silodecke 10 gleichzeitig in ihrem mittleren Bereich abstützen.The wall 11 separating the mixing space 3 from the storage space 2 is expediently designed in the form of a cylindrical, load-bearing wall which extends over the entire height of the silo 1 from the silo floor (7, 8) to the silo ceiling 10. This results in a mixing space 3 which is in the form of a cylindrical silo cell arranged centrally in the storage space 2; the cylindrical wall 11 can simultaneously support the silo ceiling 10 in its central region.

Die Silodecke 10 enthält ferner in ihrem den Mischraum 3 abdeckenden Bereich einen weiteren Gutzulauf 12, über den Korrekturgut (Pfeil 13) direkt in den Mischraum 3 eingegeben werden kann.The silo ceiling 10 also contains, in its area covering the mixing area 3, a further material inlet 12, via which correction material (arrow 13) can be entered directly into the mixing area 3.

Von besonderer Bedeutung ist bei dieser Mischsilo-Ausführung, daß der Gutauslauf 14 des Mischsilos 1 als Überlauf des Mischraumes 3 ausgebildet ist. Die Höhenlage dieses im folgenden als Hauptauslauf bezeichneten Mischraumüberlaufes kann einstellbar ausgebildet sein, d. h. in Anpassung an die erforderlichen Betriebsbedingungen. Bei dem in der Zeichnung veranschaulichten Ausführungsbeispiel befindet sich der Hauptauslauf 14 in einer Höhenlage, die etwa 1/3 der Gesamthöhe des Mischsilos 1 entspricht, wobei diese Höhenlage jedoch - wie erwähnt - durchaus niedriger oder höher sein kann.It is of particular importance in this mixing silo design that the material outlet 14 of the mixing silo 1 is designed as an overflow of the mixing space 3. The height of this mixing space overflow, referred to below as the main outlet, can be designed to be adjustable, ie in adaptation to the required operating conditions. In the example illustrated in the drawings embodiment, the main outlet 14 is located at a height position corresponding to about 1/3 of the total height of the mixing silo 1, wherein said height position, however - as mentioned - may well be lower or higher.

Neben dem Hauptauslauf 14 besitzt der Mischraum 3 im Bereich seines Bodens 7 noch einen zusätzlichen, zur Restentleerung dienenden Gutauslauf 15, der im folgenden Restauslauf genannt wird.In addition to the main outlet 14, the mixing chamber 3 also has an additional material outlet 15 in the region of its base 7, which is used for residual emptying and is referred to below as the remaining outlet.

Jedem Gutauslauf, d. h. sowohl dem Hauptauslauf 14 als auch dem Restauslauf 15 ist ein Abzugsförderer zugeordnet. Diese Abzugsförderer können grundsätzlich durch jeden geeigneten Horizontalförderer gebildet werden, es bietet sich jedoch gerade bei einem pneumatischen Mischsilo an, als Abzugsförderer pneumatische Förderrinnen 16 (für den Hauptauslauf 14) und 17 (für den Restauslauf 15) vorzusehen. Diese pneumatischen Förderrinnen 16, 17 können dann in gleicher Weise wie die Bodenbelüftungseinrichtungen 5, 6 von einer gemeinsamen Belüftungsquelle her versorgt werden.Every outlet, i.e. H. A discharge conveyor is assigned to both the main outlet 14 and the remaining outlet 15. These take-off conveyors can in principle be formed by any suitable horizontal conveyor, but it is advisable, particularly in the case of a pneumatic mixing silo, to provide pneumatic conveyor troughs 16 (for the main outlet 14) and 17 (for the remaining outlet 15) as the extraction conveyor. These pneumatic conveyor troughs 16, 17 can then be supplied in the same way as the floor ventilation devices 5, 6 from a common ventilation source.

Für das Abziehen des Gutes aus dem Mischsilo 1 ist es ferner vorteilhaft, wenn die pneumatische Förderrinne 16 des Hauptauslaufes 14 zu einem Pufferbehälter 18 führt, der das Gut vor der Weiterförderung aufnimmt. Damit das vom Restauslauf 15 bzw. von dessen pneumatischer Förderrinne 17 auszutragende Restgut mit dem vom Hauptauslauf 14 bzw. von dessen pneumatischer Förderrinne 16 abgezogenen Hauptgut zusammen abgefördert werden kann, ist es bei dem beschriebenen Ausführungsbeispiel günstig, wenn die pneumatische Förderrinne 17 des Restauslaufs 15 mit dem Hauptauslauf-Abzugsförderer 16 oder mit dem diesem Förderer nachgeordneten Pufferbehälter 18 durch einen Senkrechtförderer, z. B. - wie dargestellt - durch einen Elevator 19, in Verbindung steht. Das aus dem Mischsilo 1 abgezogene Gut kann somit von einem geme'nsamen Punkt, nämlich dem Pufferbehälter 18, abgezogen werden. Die erhöhte Anordnung dieses Pufferbehälters 18 begünstigt dabei die Anordnung von Armaturen und anderen Einrichtungen für eine nicht näher veranschaulichte Weiterfördereinrichtung.For the removal of the goods from the mixing silo 1, it is also advantageous if the pneumatic conveying trough 16 of the main outlet 14 leads to a buffer container 18 which receives the goods before further conveying. So that the residual material to be discharged from the remaining outlet 15 or from its pneumatic conveying trough 17 can be conveyed together with the main material drawn off from the main outlet 14 or from its pneumatic conveying trough 16, it is advantageous in the exemplary embodiment described if the pneumatic conveying trough 17 of the remaining outlet 15 also includes the main outlet discharge conveyor 16 or with the downstream of this conveyor buffer tank 18 by a vertical conveyor, for. B. - as shown - is connected by an elevator 19. The material withdrawn from the mixing silo 1 can thus be withdrawn from a common point, namely the buffer container 18. The increased arrangement of this buffer container 18 favors the arrangement of fittings and other devices for a further conveying device, not shown.

Für ein pneumatisches Mischsilo, wie dem Mischsilo 1, spielt ferner eine ausreichende und geeignete Abführung der durch die Bodenbeiüftungseinrichtungen 5, 6 zugeführten Luft eine Rolle. Das hier erläuterte Mischsilo 1 kann eine gemeinsame Entlüftung (vgl. Pfeile 20) für Vorratsraum 2 und Mischraum 3 aufweisen. Zu diesem Zweck könnte einerseits in der zylindrischen Wand 11 des Mischraumes 3 wenigstens eine Verbindungsöffnung zum Vorratsraum 2, und zwar unmittelbar unterhalb der Silodecke 10 vorgesehen sein oder es kann - wie gestrichelt bei 21 angedeutet - auf der Silodecke 10 ein gemeinsamer Entlüftungsfilter vorgesehen sein.For a pneumatic mixing silo, such as the mixing silo 1, adequate and suitable removal of the air supplied through the floor ventilation devices 5, 6 also plays a role. The mixing silo 1 explained here can have a common ventilation (cf. arrows 20) for the storage room 2 and the mixing room 3. For this purpose, on the one hand, at least one connection opening to the storage space 2 could be provided in the cylindrical wall 11 of the mixing chamber 3, namely directly below the silo ceiling 10 or, as indicated by dashed lines at 21, a common ventilation filter can be provided on the silo ceiling 10.

Claims (10)

1. Pneumatic mixing silo containing a storage chamber (2) provided with base ventilation (5) and at least one material inlet (9) in the upper region and a mixing chamber (3) which is arranged centrally in the lower region of the silo, also provided with base ventilation (6) and connected to the storage chamber (2) via openings (4) in its lower region for the material to pass through and has at least one material outlet, characterised in that the material outlet (14) is constructed as an overflow from the mixing chamber (3).
2. Mixing silo as claimed in claim 1, characterised in that the wall (11) separating the mixing chamber (3) form the storage chamber (2) extends as a preferably cylindrical load-bearing wall over the entire height of the silo (1) from the silo base (7, 8) to the silo cover (10).
3. Mixing silo as claimed in claims 1 and 2, characterised in that the mixing chamber (3) has an additional material inlet (12) in the region of the silo cover (10) which serves for direct supply of correcting material.
4. Mixing silo as claimed in claim 1, characterised in that the height of the material outlet (14) constructed as an overflow from the mixing chamber can be adjusted.
5. Mixing silo as claimed in claim 1, characterised in that the mixing chamber (3) has an additional material c atlet (15) in the region of its base which serves to discharge the residual material.
6. Mixing silo as claimed in claim 1, characterised in that the storage chamber (2) and the mixing chamber (3) have a common air vent (20).
7. Mixing silo as claimed in any one of claims 1 to 6, characterised in that a discharge conveyor (16, 17) is associated with each material outlet (14, 15).
8. Mixing silo as claimed in claim 7, characterised in that the discharge conveyor of the material outlet (14) constructed as an overflow from the mixing chamber is formed by a horizontal conveyor, preferably a pneumatic conveyor chute (16), leading to a buffer tank (18).
9. Mixing silo as claimed in claim 7, characterised in that the discharge conveyor of the material outlet (15) serving for discharge of the residual material is formed by a horizontal conveyor, preferably a pneumatic conveyor chute (17).
10. Mixing silo as claimed in claims 7 to 9, characterised in that the discharge conveyor (17) of the material outlet (15) serving for discharge of the residual material is connected to the discharge conveyor (16) of the material outlet (14) constructed as an overflow from the mixing chamber or to the buffer tank (18) arranged after it by a vertical conveyor (19).
EP80107557A 1980-01-21 1980-12-03 Pneumatic mixing silo Expired EP0031902B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19803002030 DE3002030A1 (en) 1980-01-21 1980-01-21 PNEUMATIC MIXING SILO
DE3002030 1980-01-21

Publications (2)

Publication Number Publication Date
EP0031902A1 EP0031902A1 (en) 1981-07-15
EP0031902B1 true EP0031902B1 (en) 1982-12-29

Family

ID=6092561

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80107557A Expired EP0031902B1 (en) 1980-01-21 1980-12-03 Pneumatic mixing silo

Country Status (7)

Country Link
US (1) US4398828A (en)
EP (1) EP0031902B1 (en)
BR (1) BR8100297A (en)
CA (1) CA1166243A (en)
DE (2) DE3002030A1 (en)
ES (1) ES498429A0 (en)
ZA (1) ZA814B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3219147A1 (en) * 1982-05-21 1983-11-24 Claudius Peters Ag, 2000 Hamburg MIXING CHAMBER SILO FOR SCHUETTGUT
US4506985A (en) * 1983-05-20 1985-03-26 Claudius Peters Ag Mixing chamber silo for loose material
DE3342507A1 (en) * 1983-11-24 1985-06-05 Claudius Peters Ag, 2000 Hamburg DOUBLE MIXING CHAMBER SILO
DE3516014A1 (en) * 1985-05-03 1986-11-06 Claudius Peters Ag, 2000 Hamburg MIXING AND STORAGE SILO
US4943163A (en) * 1989-09-22 1990-07-24 Dynamic Air Inc. Blender for pneumatically mixing batches of dry granular materials by tumbling
US5074670A (en) * 1990-05-11 1991-12-24 Fuller Company Blender with feed rate control

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Publication number Priority date Publication date Assignee Title
DE7118135U (en) * 1971-09-09 Vosswerke Gmbh Device for dosing debris of good shape food, in particular pasta or the like
FR1074419A (en) * 1952-04-12 1954-10-05 Polysius Gmbh Device for emptying and transporting powdery material out of tanks
DE1201770B (en) * 1961-08-09 1965-09-23 Andre Reimbert Emptying arrangement for silos
CH412811A (en) * 1962-11-06 1966-05-15 Ruetschi Ag Pumpenbau K Method of mixing and device for carrying out the method
SU566923A1 (en) * 1970-04-06 1977-07-30 Центральный Научно-Исследовательский Экспериментальный И Проектный Институт По Сельскому Строительству "Цнииэпсельстрой" Silo for storage of fluent materials
BR7601656A (en) * 1975-03-19 1976-09-14 Lesk Ing Buero HARD PREFERRED PERFECTED MATERIAL, HIGH PREFERENCE, PREDETERMINABLE FOR GASES OR LIQUIDS, AS WELL AS ITS APPLICATION
DE2619993B2 (en) * 1976-05-06 1981-02-12 Claudius Peters Ag, 2000 Hamburg Process for removing bulk material from a floor-ventilated silo and removal device for carrying out the process
DE2657597C2 (en) * 1976-12-18 1982-02-04 Claudius Peters Ag, 2000 Hamburg Bulk material silo with homogenization chamber
DE2657596C2 (en) * 1976-12-18 1982-08-26 Claudius Peters Ag, 2000 Hamburg Mixing chamber silo for bulk goods
FR2374073A1 (en) * 1976-12-18 1978-07-13 Peters Ag Claudius MIXING CHAMBER SILO FOR BULK MATERIALS
JPS5835089B2 (en) * 1977-04-14 1983-07-30 石川島播磨重工業株式会社 Powder mixing equipment
DE2724928C2 (en) * 1977-06-02 1983-07-07 Ibau Hamburg Ingenieurgesellschaft Industriebau Mbh, 2000 Hamburg Large-capacity silo for flour-like bulk goods

Also Published As

Publication number Publication date
ES8200233A1 (en) 1981-11-01
US4398828A (en) 1983-08-16
CA1166243A (en) 1984-04-24
BR8100297A (en) 1981-08-04
DE3061522D1 (en) 1983-02-03
EP0031902A1 (en) 1981-07-15
ZA814B (en) 1982-02-24
DE3002030A1 (en) 1981-07-23
ES498429A0 (en) 1981-11-01

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