EP0395926A1 - Dosing and mixing plant for free-flowing solids - Google Patents
Dosing and mixing plant for free-flowing solids Download PDFInfo
- 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
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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
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
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
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
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
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
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)
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 |
Family
ID=6379458
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 |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0395926B1 (en) |
AT (1) | ATE99560T1 (en) |
DE (2) | DE3913676C1 (en) |
ES (1) | ES2049362T3 (en) |
Cited By (2)
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)
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)
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 |
-
1989
- 1989-04-26 DE DE3913676A patent/DE3913676C1/de not_active Expired - Fee Related
-
1990
- 1990-04-14 ES ES90107166T patent/ES2049362T3/en not_active Expired - Lifetime
- 1990-04-14 EP EP90107166A patent/EP0395926B1/en not_active Expired - Lifetime
- 1990-04-14 DE DE90107166T patent/DE59004083D1/en not_active Expired - Fee Related
- 1990-04-14 AT AT90107166T patent/ATE99560T1/en not_active IP Right Cessation
Patent Citations (4)
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)
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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