EP0395926B1 - Dosing and mixing plant for free-flowing solids - Google Patents

Dosing and mixing plant for free-flowing solids Download PDF

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Publication number
EP0395926B1
EP0395926B1 EP90107166A EP90107166A EP0395926B1 EP 0395926 B1 EP0395926 B1 EP 0395926B1 EP 90107166 A EP90107166 A EP 90107166A EP 90107166 A EP90107166 A EP 90107166A EP 0395926 B1 EP0395926 B1 EP 0395926B1
Authority
EP
European Patent Office
Prior art keywords
metering
dosing
mixing arrangement
arrangement according
mixing
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.)
Expired - Lifetime
Application number
EP90107166A
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German (de)
French (fr)
Other versions
EP0395926A1 (en
Inventor
Marjan Dr.-Ing. Stankovicc-Gansen
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.)
Weber Werner
Original Assignee
Weber Hans-Juergen
Weber Werner
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Weber Hans-Juergen, Weber Werner filed Critical Weber Hans-Juergen
Priority to AT90107166T priority Critical patent/ATE99560T1/en
Publication of EP0395926A1 publication Critical patent/EP0395926A1/en
Application granted granted Critical
Publication of EP0395926B1 publication Critical patent/EP0395926B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/71—Feed mechanisms
    • B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
    • B01F35/7173—Feed mechanisms characterised by the means for feeding the components to the mixer using gravity, e.g. from a hopper
    • B01F35/71731—Feed mechanisms characterised by the means for feeding the components to the mixer using gravity, e.g. from a hopper using a hopper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/71—Feed mechanisms
    • B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
    • B01F35/71775—Feed mechanisms characterised by the means for feeding the components to the mixer using helical screws

Definitions

  • the invention relates to a metering and mixing arrangement for flowable solids according to the preamble of the main claim.
  • the invention has for its object a To create metering and mixing arrangement in which a very intimate mixing of the different fractions takes place without the need to use a cyclone mixer.
  • metering wheels having metering chambers allow certain quantities to be removed from the associated silo without the silo being sucked empty due to the negative pressure prevailing in the discharge line.
  • the quantity finally discharged from the metering device into the associated discharge pipe is determined by a control valve.
  • the mixing of these certain, simultaneously available flow rates then takes place in a mixture delivery pipe due to the pneumatic conditions prevailing there.
  • the products are therefore introduced into one another in their final mixing ratio and then mixed by the movement occurring due to the pneumatics.
  • silos 1, 2 and 3 are shown, which are equipped at their lower end with metering housings in which metering wheels 4, 5 and 6 are arranged so as to be driven in a rotating manner.
  • To the dosing housing open suction pipes 8, 9 and 10, which are merged in the drawing at 19 and open into a mixture delivery pipe 11.
  • a driving nozzle arrangement 12 is switched on, by means of which a negative pressure is generated in the individual suction pipes 8, 9 and 10 and a delivery pressure is generated in the mixture delivery pipe 11, so that the suction pipes 8, 9 and 10 each face the mouth of these suction pipes in the distributor housing revolving dosing chambers 7 are sucked empty and the material is discharged.
  • a control valve 14, 15 and 16 is switched on, through which the flowing through the suction lines 8, 9, 10, ie. H. extracted amounts can be adjusted.

Abstract

The invention relates to a dosing and mixing plant for free-flowing solids, having silos (1, 2, 3) receiving and storing the solids and discharge devices, which are located on the outlet side of the silos and which are formed as dosing wheels (4, 5, 6), provided inside dosing housings for being driven in rotation, with dosing chambers (7), and having pneumatically operated discharge lines adjoining the discharge device, the discharge lines being designed as suction pipes (8, 9, 10) which lead into a common mixture-conveying pipe (11) which is fitted with an ejector nozzle (12), a control valve (14, 15, 16) being associated with each suction pipe (8, 9, 10). <IMAGE>

Description

Die Erfindung bezieht sich auf eine Dosier- und Mischanordnung für fließfähige Feststoffe gemäß dem Oberbegriff des Hauptanspruches.The invention relates to a metering and mixing arrangement for flowable solids according to the preamble of the main claim.

Eine gattungsbildende Einrichtung wird in der US-A 29 84 521 beschrieben. Bei dieser bekannten Einrichtung werden die über Dosierräder dosierten Stoffe in eine gemeinsame Sammelleitung abgegeben, die die einzelnen Vorratsbehälter aufeinanderfolgend durchläuft, wobei die Förderung in dieser Sammelleitung pneumatisch durchgeführt wird. Diese Sammelleitung gibt die Stoffe in einen Behandlungsbehälter oder einen Zyklonmischer ab. Die Durchmischung der einzelnen Fraktionen ist höchstwahrscheinlich nicht sehr innig und wurde als unzureichend empfunden.A generic device is described in US-A 29 84 521. In this known device, the substances metered via metering wheels are discharged into a common collecting line, which passes through the individual storage containers in succession, the conveying being carried out pneumatically in this collecting line. This collecting line releases the substances into a treatment container or a cyclone mixer. The mixing of the individual fractions is most likely not very intimate and was perceived as insufficient.

Der Erfindung liegt die Aufgabe zugrunde, eine Dosier- und Mischanordnung zu schaffen, bei welcher ein sehr inniges Durchmischen der verschiedenen Fraktionen erfolgt, ohne daß ein Zyklonmischer eingesetzt werden muß.The invention has for its object a To create metering and mixing arrangement in which a very intimate mixing of the different fractions takes place without the need to use a cyclone mixer.

Diese der Erfindung zugrundeliegende Aufgabe wird durch die Lehre des Patentanspruches 1 gelöst.This object underlying the invention will solved by the teaching of claim 1.

Mit anderen Worten ausgedrückt: Es wird vorgeschlagen, daß über Dosierkammern aufweisende Dosierräder ein Entnehmen bestimmter Mengen aus dem zugeordneten Silo möglich ist, ohne daß der Silo aufgrund des in der Abförderleitung herrschenden Unterdrucks leergesaugt wird. Die von der Dosiereinrichtung in das jeweils zugehörige Abförderrohr endgültig abgegebene Menge wird durch ein Regelventil bestimmt. Das Durchmischen dieser gewissen, gleichzeitig vorhandenen Fördermengen erfolgt dann in einem Gemischförderrohr aufgrund der dort herrschenden pneumatischen Verhältnisse. Die Produkte werden also in ihrem endgültigen Mischungsverhältnis ineinander eingeführt und dann durch die aufgrund der Pneumatik auftretende Bewegung gemischt.In other words, it is proposed that metering wheels having metering chambers allow certain quantities to be removed from the associated silo without the silo being sucked empty due to the negative pressure prevailing in the discharge line. The quantity finally discharged from the metering device into the associated discharge pipe is determined by a control valve. The mixing of these certain, simultaneously available flow rates then takes place in a mixture delivery pipe due to the pneumatic conditions prevailing there. The products are therefore introduced into one another in their final mixing ratio and then mixed by the movement occurring due to the pneumatics.

Durch diese Maßnahme wird der aufwendige Mischer vermieden, und es ist als Beispiel denkbar, daß drei Silofahrzeuge Asche, Zement und Chemikalien zu einer bestimmten Baustelle bringen, dann alle drei Fahrzeuge die gleiche Zeit lang Produkte austragen, nur in unterschiedlichen Mengen und daß diese zusammengeführten unterschiedlichen Produktmengen dann aufgrund ihrer Förderung gemischt werden und unmittelbar zum Verarbeitungsplatz gelangen.This measure avoids the complex mixer, and it is conceivable as an example that three silo vehicles bring ash, cement and chemicals to a specific construction site, then all three vehicles discharge products for the same time, only in different quantities and that these merged different Product quantities are then mixed on the basis of their promotion and go directly to the processing station.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der Zeichnung erläutert.An embodiment of the invention is explained below with reference to the drawing.

In der Zeichnung sind drei Silos 1, 2 und 3 dargestellt, die an ihrem unteren Ende mit Dosiergehäusen ausgerüstet sind, in denen Dosierräder 4, 5 und 6 umlaufend angetrieben angeordnet sind. An die Dosiergehäuse münden Absaugrohre 8, 9 und 10, die in der Zeichnung bei 19 zusammengeführt werden und in ein Gemischförderrohr 11 münden. Zwischen der Zusammenführung 19 und dem Gemischförderrohr ist eine Treibdüsenanordnung 12 eingeschaltet, durch die in den einzelnen Absaugrohren 8, 9 und 10 ein Unterdruck und in dem Gemischförderrohr 11 ein Förderdruck erzeugt wird, so daß die jeweils gegenüber der Mündung dieser Absaugrohre 8, 9 und 10 in den Verteilergehäusen umlaufenden Dosierkammern 7 leergesaugt werden und das Gut abgeführt wird.In the drawing, three silos 1, 2 and 3 are shown, which are equipped at their lower end with metering housings in which metering wheels 4, 5 and 6 are arranged so as to be driven in a rotating manner. To the dosing housing open suction pipes 8, 9 and 10, which are merged in the drawing at 19 and open into a mixture delivery pipe 11. Between the junction 19 and the mixture delivery pipe, a driving nozzle arrangement 12 is switched on, by means of which a negative pressure is generated in the individual suction pipes 8, 9 and 10 and a delivery pressure is generated in the mixture delivery pipe 11, so that the suction pipes 8, 9 and 10 each face the mouth of these suction pipes in the distributor housing revolving dosing chambers 7 are sucked empty and the material is discharged.

In jede der Absaugleitungen 8, 9, 10 ist je ein Regelventil 14, 15 und 16 eingeschaltet, durch die die durch die Absaugleitungen 8, 9, 10 fließenden, d. h. abgesaugten Mengen eingeregelt werden können.In each of the suction lines 8, 9, 10, a control valve 14, 15 and 16 is switched on, through which the flowing through the suction lines 8, 9, 10, ie. H. extracted amounts can be adjusted.

Durch entsprechende unterschiedliche Umlaufzahlen der Dosierräder 4, 5 und 6 werden in der Zeiteinheit unterschiedliche Mengen aus den Silos 1, 2 und 3 zur Gemischförderleitung 11 geführt. Gleichzeitig wird aber durch die Einstellung der Regelventile 14, 15 und 16 die in den Rohren fließenden Fördermengen eingeregelt, so daß dadurch ein einwandfreies Mischen im Bereich 19 zwischen den verschiedenen Produkten erfolgt.Corresponding different numbers of revolutions of the metering wheels 4, 5 and 6 lead different amounts from the silos 1, 2 and 3 to the mixture feed line 11 in the time unit. At the same time, however, the setting of the control valves 14, 15 and 16 regulates the flow rates flowing in the tubes, so that this results in a perfect mixing in the area 19 between the different products.

Der Betrieb der vorbeschriebenen Anlage kann natürlich manuell erfolgen, es ist aber auch möglich, den Betrieb rechnergesteuert ablaufen zu lassen. Zu diesem Zweck ist ein Rechner 18 vorgesehen, der einmal mit jedem Dosiergehäuse zugeordneten Füllstandsüberwachern 17 verbunden ist, zum andern mit jedem Antrieb für die Dosierräder 4, 5, 6 verbunden ist und schließlich auch die Regelung der Regelventile 14, 15 und 16 übernimmt. Durch entsprechende Einstellung dieses Rechners ist es also möglich, den Betrieb vollautomatisch ablaufen zu lassen.The operation of the system described above can of course be done manually, but it is also possible to run the operation under computer control. For this purpose, a computer 18 is provided, which is connected on the one hand to each fill level monitor 17 assigned to each metering housing, on the other hand is connected to each drive for the metering wheels 4, 5, 6 and finally also the regulation of the control valves 14, 15 and 16 takes over. By setting this computer accordingly, it is possible to run the operation fully automatically.

Schließlich kann die vorbeschriebene Anlage stationär oder mobil ausgebildet sein.Finally, the system described above can be designed to be stationary or mobile.

Claims (6)

  1. A metering and mixing arrangement for free-flowing solids, comprising silos (1, 2, 3) accommodating and storing the solids as well as discharge devices arranged on the outlet side of the silos (1 to 3), which discharge devices are constructed as revolvingly drivable metering wheels (4, 5, 6) provided inside metering housings, the metering wheels (4, 5, 6) forming metering chambers (7) with the metering housings, and comprising pneumatically operated outlet lines adjoining the discharge devices, characterized in that the outlet lines are constructed as suction pipes (8, 9, 10) which converge in the area of a junction (19), a propelling nozzle arrangement (12) being connected between the junction (19) and a mixing conveying tube (11) and a control valve (14, 15, 16) being associated with each suction pipe (8, 9, 10).
  2. A metering and mixing arrangement according to claim 1, characterized in that a level monitor (17) is associated with each metering housing.
  3. A metering and mixing arrangement according to claim 1 or claim 2, characterized in that the drive for the metering wheels (4, 5, 6) and the actuating drive for the control valves (14, 15, 16) are controlled by a common computer (18).
  4. A metering and mixing arrangement according to claim 3, characterized in that the level monitor (17) is furthermore connected to the computer.
  5. A metering and mixing arrangement according to any one of claims 1 to 4, characterized in that the arrangement is of stationary construction.
  6. A metering and mixing arrangement according to any one of claims 1 to 4, characterized in that the whole arrangement is of mobile construction.
EP90107166A 1989-04-26 1990-04-14 Dosing and mixing plant for free-flowing solids Expired - Lifetime EP0395926B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90107166T ATE99560T1 (en) 1989-04-26 1990-04-14 DOSING AND MIXING DEVICE FOR FLOWABLE SOLIDS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3913676A DE3913676C1 (en) 1989-04-26 1989-04-26
DE3913676 1989-04-26

Publications (2)

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EP0395926A1 EP0395926A1 (en) 1990-11-07
EP0395926B1 true EP0395926B1 (en) 1994-01-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP90107166A Expired - Lifetime EP0395926B1 (en) 1989-04-26 1990-04-14 Dosing and mixing plant for free-flowing solids

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EP (1) EP0395926B1 (en)
AT (1) ATE99560T1 (en)
DE (2) DE3913676C1 (en)
ES (1) ES2049362T3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4121649C1 (en) * 1991-06-29 1992-08-13 Plus Plan Gmbh, 6440 Bebra, De
IT1282481B1 (en) * 1995-04-03 1998-03-23 Comark S R L COFFEE DISTRIBUTOR

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2984521A (en) * 1958-06-16 1961-05-16 Baker Perkins Ltd Method and apparatus for blending flour or other pulverulent material
US3371912A (en) * 1967-01-05 1968-03-05 Nat Plastic Products Company I Recirculating particulate solids blender
DE1782671B2 (en) * 1968-09-30 1974-11-21 Horstkoetter & Co Kg Maschinenfabrik Und Eisengiesserei, 4720 Beckum Dosing and grinding device for feed preparation
DE2508981A1 (en) * 1975-03-01 1976-09-09 Peters Ag Claudius Mixer for particulate solids in silo - having aeration to silo controlled by level of solids in pneumatic mixer
DE3034219C2 (en) * 1980-09-11 1982-07-29 Maschinenfabrik Gmelin GmbH + Co, 7410 Reutlingen Feed processing machine
DE3146667C2 (en) * 1981-11-25 1984-12-06 Werner & Pfleiderer, 7000 Stuttgart Method and device for mixing and metering several mix components
IN160116B (en) * 1982-12-11 1987-06-27 Satake Eng Co Ltd

Also Published As

Publication number Publication date
EP0395926A1 (en) 1990-11-07
DE3913676C1 (en) 1990-07-12
ATE99560T1 (en) 1994-01-15
ES2049362T3 (en) 1994-04-16
DE59004083D1 (en) 1994-02-17

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