EP0395926A1 - 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
EP0395926A1
EP0395926A1 EP90107166A EP90107166A EP0395926A1 EP 0395926 A1 EP0395926 A1 EP 0395926A1 EP 90107166 A EP90107166 A EP 90107166A EP 90107166 A EP90107166 A EP 90107166A EP 0395926 A1 EP0395926 A1 EP 0395926A1
Authority
EP
European Patent Office
Prior art keywords
dosing
mixing arrangement
arrangement according
silos
discharge
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
EP90107166A
Other languages
German (de)
French (fr)
Other versions
EP0395926B1 (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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Classifications

    • 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 to provide a metering and mixing arrangement in which the complex mixer is avoided.
  • 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 released by 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.
  • 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.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Air Transport Of Granular Materials (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

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-PS 29 84 521 beschrieben. Bei dieser bekannten Einrich­tung werden die dosiert aus den verschiedenen Vor­ratsbehältern abgezogenen Stoffe einem Zyklonmischer zugeführt, der die verschiedenen Stoffe nun ent­sprechend untereinander mischt.A generic device is described in US Pat. No. 2,984,521. In this known device, the substances drawn off in doses from the various storage containers are fed to a cyclone mixer which now mixes the various substances with one another accordingly.

Es wurde dabei als nachteilig empfunden, daß der Staubanfall im Mischer zu einer Belästigung der Um­welt führen kann und der Betrieb des Mischers ener­gieaufwendig ist.It was perceived as a disadvantage that the accumulation of dust in the mixer can lead to a nuisance to the environment and the operation of the mixer is energy-intensive.

Der Erfindung liegt die Aufgabe zugrunde, ein Do­sier- und Mischanordnung zu schaffen, bei welcher der aufwendige Mischer vermieden wird.The invention has for its object to provide a metering and mixing arrangement in which the complex mixer is avoided.

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 released by 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 Do­ siergehäuse 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 to be driven in a rotating manner. To the Thurs siergehäuse open suction pipes 8, 9 and 10, which are merged in the drawing at 19 and open into a mixture feed 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 delivery 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 pipes, 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. Dosier- und Mischanordnung für fließfähige Feststoffe mit die Feststoffe aufnehmenden und lagernden Silos (1, 2, 3) sowie an der Auslaufseite der Silos (1 bis 3) angeordneten Austragsvorrichtungen, die als umlaufend an­treibbare, innerhalb von Dosiergehäusen vor­gesehene Dosierräder (4, 5, 6) mit Dosier-­kammern (7) ausgebildet sind, und mit an die Austragsvorrichtung anschließenden pneumatisch betriebenen Abförderleitungen, dadurch gekenn­zeichnet, daß die Abförderleitungen als Ab­saugrohre (8, 9, 10) gestaltet sind, die in ein gemeinsames Gemischförderrohr (11) mün­den, das mit einer Treibdüse (12) ausgerüstet ist, und daß jedem Absaugrohr (8, 9, 10) ein Regelventil (14, 15, 16) zugeordnet ist.1.Dosing and mixing arrangement for flowable solids with the solids receiving and storing silos (1, 2, 3) as well as discharge devices arranged on the outlet side of the silos (1 to 3), which are arranged as metering wheels (4, 5, 6) are formed with metering chambers (7), and with pneumatically operated discharge lines connected to the discharge device, characterized in that the discharge lines are designed as suction pipes (8, 9, 10) which are connected to a common mixture feed pipe (11). open, which is equipped with a driving nozzle (12) and that each suction pipe (8, 9, 10) is assigned a control valve (14, 15, 16). 2. Dosier- und Mischanordnung nach Anspruch 1, dadurch gekennzeichnet, daß jedem Dosierge­häuse ein Füllstandsüberwacher (17) zugeord­net ist.2. Dosing and mixing arrangement according to claim 1, characterized in that a fill level monitor (17) is assigned to each dosing housing. 3. Dosier- und Mischanordnung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der An­trieb für die Dosierräder (4, 5, 6) und der Stellantrieb für die Regelventile (14, 15, 16) über einen gemeinsamen Rechner (18) ge­steuert werden.3. Dosing and mixing arrangement according to claim 1 or 2, characterized in that the drive for the metering wheels (4, 5, 6) and the actuator for the control valves (14, 15, 16) are controlled by a common computer (18) . 4. Dosier- und Mischanordnung nach Anspruch 3, dadurch gekennzeichnet, daß an den Rechner weiterhin der Füllstandsüberwacher (17) an­geschlossen ist.4. dosing and mixing arrangement according to claim 3, characterized in that the level monitor (17) is also connected to the computer. 5. Dosier- und Mischanordnung nach einem oder mehreren der Ansprüche 1 bis 4, dadurch ge­kennzeichnet, daß die Anordnung stationär ausgebildet ist.5. dosing and mixing arrangement according to one or more of claims 1 to 4, characterized in that the arrangement is stationary. 6. Dosier- und Mischanordnung nach einem oder mehreren der Ansprüche 1 bis 4, dadurch ge­kennzeichnet, daß die Gesamtanordnung mobil ausgebildet ist.6. dosing and mixing arrangement according to one or more of claims 1 to 4, characterized in that the overall arrangement is mobile.
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)

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

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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)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0521337A1 (en) * 1991-06-29 1993-01-07 FRIEDRICH THEYSOHN GmbH Method of mixing and mixing device attached to an extruder for raw material and small components, in particular colour additives
EP0736279A1 (en) * 1995-04-03 1996-10-09 COMARK S.r.l. Coffee distributor

Citations (4)

* 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
DE1782671A1 (en) * 1968-09-30 1974-08-01 Horstkoetter & Co Kg GRAIN DOSING AND GRINDING SYSTEM
DE3344456A1 (en) * 1982-12-11 1984-06-14 Satake Engineering Co. Ltd., Tokio/Tokyo GRAIN BLENDING SYSTEM

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Patent Citations (4)

* 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
DE1782671A1 (en) * 1968-09-30 1974-08-01 Horstkoetter & Co Kg GRAIN DOSING AND GRINDING SYSTEM
DE3344456A1 (en) * 1982-12-11 1984-06-14 Satake Engineering Co. Ltd., Tokio/Tokyo GRAIN BLENDING SYSTEM

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0521337A1 (en) * 1991-06-29 1993-01-07 FRIEDRICH THEYSOHN GmbH Method of mixing and mixing device attached to an extruder for raw material and small components, in particular colour additives
EP0736279A1 (en) * 1995-04-03 1996-10-09 COMARK S.r.l. Coffee distributor

Also Published As

Publication number Publication date
ATE99560T1 (en) 1994-01-15
DE3913676C1 (en) 1990-07-12
ES2049362T3 (en) 1994-04-16
DE59004083D1 (en) 1994-02-17
EP0395926B1 (en) 1994-01-05

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