EP1514081A1 - Balance for detecting mass flow rate according to the differential principle - Google Patents

Balance for detecting mass flow rate according to the differential principle

Info

Publication number
EP1514081A1
EP1514081A1 EP03759913A EP03759913A EP1514081A1 EP 1514081 A1 EP1514081 A1 EP 1514081A1 EP 03759913 A EP03759913 A EP 03759913A EP 03759913 A EP03759913 A EP 03759913A EP 1514081 A1 EP1514081 A1 EP 1514081A1
Authority
EP
European Patent Office
Prior art keywords
slide
container
edge
mass flow
balance
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.)
Withdrawn
Application number
EP03759913A
Other languages
German (de)
French (fr)
Inventor
Martin Deters
Rolf Michels
Wolfgang Schäfer
Jörg MÖLLER
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.)
Inoex GmbH
Original Assignee
Inoex GmbH
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 Inoex GmbH filed Critical Inoex GmbH
Publication of EP1514081A1 publication Critical patent/EP1514081A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/54—Gates or closures
    • B65D90/58—Gates or closures having closure members sliding in the plane of the opening
    • B65D90/582—Gates or closures having closure members sliding in the plane of the opening having a rotational motion
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G13/00—Weighing apparatus with automatic feed or discharge for weighing-out batches of material
    • G01G13/16—Means for automatically discharging weigh receptacles under control of the weighing mechanism
    • G01G13/18—Means for automatically discharging weigh receptacles under control of the weighing mechanism by valves or flaps in the container bottom
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2590/00—Component parts, details or accessories for large containers
    • B65D2590/54—Gates or closures
    • B65D2590/66—Operating devices therefor
    • B65D2590/664—Operating devices therefor actuating mechanism other than manual, e.g. pneumatic, electropneumatic, hydraulic, electromagnetic

Definitions

  • the invention relates to a scale for recording the mass throughput of bulk goods as granules, powder, regrind, etc. according to the differential principle, which has a container with an outlet with a weighing device carrying it and a filling funnel with a lockable bottom outlet arranged directly above the open container. whereby a slide which can be inserted transversely into the mass flow is provided as the shut-off means.
  • Scales of this type are known. They are used, for example, in extrusion systems to control the extruder depending on the mass throughput and / or to be able to make statements about the weight per meter of the extruded product.
  • the lockable bottom outlet of the filling funnel upstream of the container has a pinch valve with an elastic membrane as a shut-off means, which reduces or closes the passage cross section by air pressure.
  • rotary shutters or plate-shaped shut-off devices Closing elements (flat slides) are known which can be inserted into the material flow. During the closing process with these shut-off elements, the material can then be compressed.
  • the invention has for its object to provide a scale of the type mentioned, in which the bulk material is not loaded when the hopper is shut off and which ensures a forced decoupling of the container and hopper.
  • the wiping edge pointing downward creates a space for any material that may be backing up in the container.
  • the weighing device only measures the container with its bulk content.
  • the invention is designed in such a way that the edge of the bottom outlet is spaced from the slide blade and the slide has such a projection that the material discharge is blocked taking into account the angle of repose of the bulk material.
  • the distance between the slide blade should be larger than the grain size of the bulk material, so that crushing of the material is avoided in any case.
  • the slide is designed as a blade and is pivotably mounted.
  • the pivotable blade is preferably curved in a hollow cylinder to the bottom outlet.
  • the filling funnel can be carried by a carrier plate arranged above the slide, the intermediate space can be provided with a flexible seal and the pivotable slide can be coupled to a swivel drive designed as a cylinder piston, which seals via a ball joint is guided through the carrier plate.
  • FIG. 1 is a side view of a scale above the inlet of an extruder
  • Fig. 2 shows the scale of FIG. 1 in an enlarged manner
  • FIG. 3 shows the scale of FIG. 1 in an enlarged manner
  • the scale drawn in the drawing in a schematic side view and partly in vertical section for the detection of the mass flow rate according to the differential principle consists of a container 1 designed as a weighing container with a bottom outlet la.
  • the container 1 is supported in a self-supporting manner on load cells lb, lc of a weighing device. Its outlet la opens out, for example, into the inlet funnel 10 of an extruder, which is otherwise not shown.
  • a filling funnel 2 is arranged above and partially in the container 1, which essentially consists of an upper funnel-shaped part 2a and a lower cuboid or cylinder-shaped part 2b.
  • the filling funnel 2 is carried by a stationary plate 3, which essentially covers the container 2 at the top.
  • the lower cylindrical part 2b has a floor outlet 2b * which can be closed by means of a shut-off device.
  • a shovel 5 pivotably mounted in a bearing 4 on the plate 3 serves as the shut-off means.
  • the shovel 5 has a Bottom outlet 2b * has a hollow-cylindrical curved blade 5a with a scraper edge 5b arranged on the underside at the front edge.
  • the airfoil 5a does not adjoin the lower edge of the bottom outlet 2b *, but is arranged at a distance from it. It also has an all-round protrusion from the edge of the floor outlet 2b *.
  • a cylinder-piston arrangement 6 is used to pivot the blade 5, which is guided through the plate 3 in a socket 8 by means of a ball joint 7.
  • the bucket blade 5a In order not to squeeze or compact any material when the filler funnel 2 is shut off by the bucket, the bucket blade 5a, as already described, is arranged at a vertical distance from the lower edge of the bottom outlet 2b *.
  • the airfoil has lateral protrusion, in such a way that the material flow from the hopper 2 to the container 1 is absolutely interrupted, taking into account the natural angle of repose of the bulk material.

Abstract

The invention relates to a balance for detecting the mass flow rate of bulk material according to the differential principle. The aim of the invention is to decouple a container (1) that is freely suspended on a weighing device (1b, 1c) and located upstream of a processing machine, in particular an extruder (10) from the material stream emanating from a feed hopper (2) that is positioned directly above the open-topped container (1). To achieve this, a base outlet (2b*) of the feed hopper (2) can be sealed by a pivotally mounted sliding element (5), which has a scraper edge (5b) that points downwards on its underside, said edge clearing material that has accumulated directly beneath the sliding element as the latter pivots and thus permitting the decoupling process.

Description

Waage zur Erfassung des Massendurchsatzes nach dem DifferentialprinzipScale for recording the mass flow rate according to the differential principle
Die Erfindung betrifft eine Waage zur Erfassung des Massendurchsatzes von Schüttgütern als Granulat, Pulver, Mahlgut usw. nach dem Differentialprinzip, die einen einen Auslauf aufweisenden Behälter mit einer ihn tragenden Wägeeinrichtung und einen unmittelbar über dem oben offen Behälter angeordneten Fülltrichter mit einem absperrbaren Bodenauslauf aufweist, wobei als Absperrmittel ein quer in den Massenstrom einführbarer Schieber vorgesehen ist.The invention relates to a scale for recording the mass throughput of bulk goods as granules, powder, regrind, etc. according to the differential principle, which has a container with an outlet with a weighing device carrying it and a filling funnel with a lockable bottom outlet arranged directly above the open container. whereby a slide which can be inserted transversely into the mass flow is provided as the shut-off means.
Waagen dieser Art sind bekannt. Sie werden beispielsweise in Extrudieranlagen eingesetzt, um den Extruder in Abhängigkeit von dem Massendurchsatz zu steuern und/oder Aussagen über das Metergewicht des extrudierten Produktes machen zu können.Scales of this type are known. They are used, for example, in extrusion systems to control the extruder depending on the mass throughput and / or to be able to make statements about the weight per meter of the extruded product.
Bei einer bekannten Waage zur Erfassung des Massendurchsatzes dieser Art weist der absperrbare Bodenauslauf des dem Behälter vorgeordneten Fülltrichters als Absperrmittel ein Abquetschventil mit einer elastischen Membran auf, die durch Luftdruck den Durchlaßquerschnitt vermindert bis verschließt. Darüber hinaus sind als Absperrmittel Drehklappen oder plattenförmige Schließelemente (Flachschieber) bekannt, die in den Materialström eingefahren werden können. Beim Schließvorgang mit diesen Absperrelementen kann es dann zu einem Verdichten des Materials kommen.In a known balance for detecting the mass flow rate of this type, the lockable bottom outlet of the filling funnel upstream of the container has a pinch valve with an elastic membrane as a shut-off means, which reduces or closes the passage cross section by air pressure. In addition, rotary shutters or plate-shaped shut-off devices Closing elements (flat slides) are known which can be inserted into the material flow. During the closing process with these shut-off elements, the material can then be compressed.
Das zeitweilige Absperren des vorgeordneten Fülltrichters ist erforderlich, um zu eindeutigen Meßwerten bei der gravimetrischen Differentialmeßmethode zu kommen. Dabei kann es zu Fehlmessungen kommen, wenn das Schüttgut mit der Absperreinheit in Kontakt bleibt bzw. sich ein Rückstau bis zum Fülltrichter bildet, so daß sich der Fülltrichter quasi auf dem Füllgut im Behälter abstützt.It is necessary to temporarily shut off the upstream hopper in order to arrive at unambiguous measured values in the gravimetric differential measurement method. This can lead to incorrect measurements if the bulk material remains in contact with the shut-off unit or a backlog forms up to the filling funnel, so that the filling funnel is quasi supported on the filling material in the container.
Der Erfindung liegt die Aufgabe zugrunde, eine Waage der eingangs genannten Art zu schaffen, bei der das Schüttgut beim Absperren des Fülltrichters nicht belastet wird und die eine zwangsweise Entkopplung von Behälter und Fülltrichter gewährleistet.The invention has for its object to provide a scale of the type mentioned, in which the bulk material is not loaded when the hopper is shut off and which ensures a forced decoupling of the container and hopper.
Diese Aufgabe wird bei einer Waage der eingangs genannten Art dadurch gelöst, daß der Schieber an seiner vorderen Kante als eine nach unten weisende Abstreifkante ausgebildet ist.This object is achieved in a balance of the type mentioned in that the slide is designed on its front edge as a downward wiping edge.
Bei einer solchen Waage wird beim Einschwenken durch die nach unten weisende Abstreifkante ein Freiraum über sich eventuell zurückstauendes Material im Behälter geschaffen. Die Wägeeinrichtung mißt so nur den Behälter mit seinem Schüttgutinhalt. Bei den eingangs erwähnten Quetschventilen kommt es beim Schließvorgang zusätzlich zu einer Materialbelastung durch Zusammenpressen und gegebenenfalls zu einem Verdichten des Schüttgutes. Um dies zu verhindern, ist die Erfindung so ausgestaltet, daß der Rand des Bodenauslaufs zum Schieberblatt derart beabstandet ist und der Schieber zum Rand einen solchen Überstand hat, daß unter Berücksichtigung des Schüttwinkels des Schüttgutes der Materialaustrag gesperrt ist. Der Abstand des Schieberblattes sollte größer als die Korngröße des Schüttgutes sein, so daß Materialquetschungen auf jeden Fall vermieden werden.With such a scale, when swiveling in, the wiping edge pointing downward creates a space for any material that may be backing up in the container. The weighing device only measures the container with its bulk content. In the case of the pinch valves mentioned at the outset, there is an additional material load during the closing process due to compression and, if necessary to compact the bulk material. To prevent this, the invention is designed in such a way that the edge of the bottom outlet is spaced from the slide blade and the slide has such a projection that the material discharge is blocked taking into account the angle of repose of the bulk material. The distance between the slide blade should be larger than the grain size of the bulk material, so that crushing of the material is avoided in any case.
Aus mechanischer Sicht und aus antriebstechnischen Gründen ist es vorteilhaft, wenn der Schieber als Schaufel ausgebildet und schwenkbar gelagert ist . Dabei ist vorzugsweise die schwenkbare Schaufel zum Bodenauslauf hohlzylindrisch gekrümmt.From a mechanical point of view and for reasons of drive technology, it is advantageous if the slide is designed as a blade and is pivotably mounted. In this case, the pivotable blade is preferably curved in a hollow cylinder to the bottom outlet.
Um insbesondere bei staubförmigem Schüttgut die Waage nach oben abzudichten, kann der Fülltrichter von einer über dem Schieber angeordneten Trägerplatte getragen, der Zwischenraum mit einer flexiblen Dichtung versehen und der schwenkbare Schieber an einem als Zylinder-Kolben ausgebildeten Schwenkantrieb gekuppelt sein, der über ein Kugelgelenk abgedichtet durch die Trägerplatte geführt ist.In order to seal the scales upwards, particularly in the case of dusty bulk goods, the filling funnel can be carried by a carrier plate arranged above the slide, the intermediate space can be provided with a flexible seal and the pivotable slide can be coupled to a swivel drive designed as a cylinder piston, which seals via a ball joint is guided through the carrier plate.
Im folgenden wird die Erfindung anhand einer ein Ausführungsbeispiel schematisch darstellenden Zeichnung näher erläutert. Im einzelnen zeigenThe invention is explained in more detail below with reference to a drawing schematically illustrating an exemplary embodiment. Show in detail
Fig. 1 eine Waage über dem Einlauf eines Extruders in Seitenansicht, Fig. 2 die Waage gemäß Fig 1 im vergrößerten1 is a side view of a scale above the inlet of an extruder, Fig. 2 shows the scale of FIG. 1 in an enlarged manner
Ausschnitt im Bereich des Behälters der Wägeeinrichtung bei geöffnetem Fülltrichter undSection in the area of the container of the weighing device with the filling funnel and open
Fig. 3 die Waage gemäß Fig 1 im vergrößertenFig. 3 shows the scale of FIG. 1 in an enlarged manner
Ausschnitt im Bereich des Behälters der Wägeeinrichtung bei unmittelbar nach Schließen des Bodenauslaufs des Fülltrichters .Cutout in the area of the container of the weighing device when the filling funnel is closed immediately after the bottom outlet.
Die in der Zeichnung in schematischer Seitenansicht und teilweise im Vertikalschnitt gezeichnete Waage für die Erfassung des Massendurchsatzes nach dem Differentialprinzip besteht aus einem als Wägebehälter ausgebildeten Behälter 1 mit Bodenauslauf la. Der Behälter 1 ist freitragend auf Meßdosen lb, lc einer Wägeeinrichtung abgestützt. Sein Auslauf la mündet beispielsweise in den Einlauftrichter 10 eines im übrigen nicht dargestellten Extruders .The scale drawn in the drawing in a schematic side view and partly in vertical section for the detection of the mass flow rate according to the differential principle consists of a container 1 designed as a weighing container with a bottom outlet la. The container 1 is supported in a self-supporting manner on load cells lb, lc of a weighing device. Its outlet la opens out, for example, into the inlet funnel 10 of an extruder, which is otherwise not shown.
Über und teilweise im Behälter 1 ist ein Fülltrichter 2 angeordnet, der im wesentlichen aus einem oberen trichterförmigen Teil 2a und einem unteren quader- oder zylinderfδrmigen Teil 2b besteht. Der Fülltrichter 2 ist von einer stationären Platte 3 getragen, die den Behälter 2 im wesentlichen oben abdeckt. Der untere zylinderförmige Teil 2b weist einen Bodenauslauf 2b* auf, der mittels eines Absperrmittels verschließbar ist. Als Absperrmittel dient eine in einem Lager 4 an der Platte 3 verschwenkbar gelagerte Schaufel 5. Die Schaufel 5 weist ein zum Bodenauslauf 2b* hohlzylindrisch gekrümmtes Schaufelblatt 5a mit einer am vorderen Rand unterseitig angeordneten Abstreifkante 5b auf. Das Schaufelblatt 5a schließt nicht dicht am unteren Rand des Bodenauslaufs 2b* an, sondern ist davon beabstandet angeordnet . Es hat auch einen allseitigen Überstand gegenüber dem Rand des Bodenauslaufs 2b* .A filling funnel 2 is arranged above and partially in the container 1, which essentially consists of an upper funnel-shaped part 2a and a lower cuboid or cylinder-shaped part 2b. The filling funnel 2 is carried by a stationary plate 3, which essentially covers the container 2 at the top. The lower cylindrical part 2b has a floor outlet 2b * which can be closed by means of a shut-off device. A shovel 5 pivotably mounted in a bearing 4 on the plate 3 serves as the shut-off means. The shovel 5 has a Bottom outlet 2b * has a hollow-cylindrical curved blade 5a with a scraper edge 5b arranged on the underside at the front edge. The airfoil 5a does not adjoin the lower edge of the bottom outlet 2b *, but is arranged at a distance from it. It also has an all-round protrusion from the edge of the floor outlet 2b *.
Zur Verschwenkung der Schaufel 5 dient eine Zylinder- Kolben-Anordnung 6, die mittels eines Kugelgelenkes 7 in einem Stutzen 8 abgedichtet durch die Platte 3 geführt ist.A cylinder-piston arrangement 6 is used to pivot the blade 5, which is guided through the plate 3 in a socket 8 by means of a ball joint 7.
Im Betrieb bildet sich bei offenem Bodenauslauf 2b* und aufsteigendem Schüttgut 9 im Behälter 1 ein natürlicher Schüttkegel 9a, der sich bis zum Bodenauslauf 2b* rückstaut. Das bedeutet, daß eine geschlossene Materialsäule des Schüttgutes 9 im Behälter 1 bis in den Fülltrichter 2 sich aufbaut. Eine solche Säule würde zu einer fehlerhaften Wägung führen. Dies wird durch die an der Vorderkante der Schaufel 5 ausgebildete Abstreifkante 5b vermieden. Wie die Zeichnung zeigt, räumt die Abstreifkante 5b beim Verschwenken in die in der Zeichnung dargestellte Absperrposition den unmittelbaren Bereich unterhalb des Fülltrichters frei, so daß der Behälter 1 vom Fülltrichter 2 entkoppelt ist. Der fehlerfreien Wägung des Behälters 1 mit Inhalt steht dann nichts mehr im Wege.In operation, when the floor outlet 2b * is open and the bulk material 9 rises, a natural cone 9a forms in the container 1, which backs up to the floor outlet 2b *. This means that a closed column of material of the bulk material 9 builds up in the container 1 to the hopper 2. Such a column would lead to incorrect weighing. This is avoided by the wiping edge 5b formed on the front edge of the blade 5. As the drawing shows, the scraper edge 5b clears the immediate area below the filling funnel when pivoting into the shut-off position shown in the drawing, so that the container 1 is decoupled from the filling funnel 2. Then there is nothing standing in the way of the error-free weighing of the container 1 with its contents.
Um beim Absperren des Fülltrichters 2 durch die Schaufel kein Material zu verquetschen oder zu verdichten, ist das Schaufelblatt 5a, wie bereits beschrieben, mit vertikalem Abstand zum unteren Rand des Bodenauslaufs 2b* angeordnet. Darüber hinaus hat das Schaufelblatt seitlichen Überstand, und zwar derart, daß unter Berücksichtigung des natürlichen Schüttwinkels des Schüßttgutes der Materialstrom vom Fülltrichter 2 zum Behälter 1 absolut unterbrochen wird. In order not to squeeze or compact any material when the filler funnel 2 is shut off by the bucket, the bucket blade 5a, as already described, is arranged at a vertical distance from the lower edge of the bottom outlet 2b *. In addition, the airfoil has lateral protrusion, in such a way that the material flow from the hopper 2 to the container 1 is absolutely interrupted, taking into account the natural angle of repose of the bulk material.

Claims

P A T E N T A N S P R Ü C H E PATENT CLAIMS
1. Waage zur Erfassung des Massendurchsatzes von1. Scale for recording the mass flow of
Schüttgütern nach dem Differentialprinzip, die einen einen Auslauf (la) aufweisenden Behälter (1) mit einer ihn tragenden Wägeeinrichtung (lb, lc) und einen unmittelbar über dem oben offenen Behälter (1) angeordneten Fülltrichter (2) mit einem absperrbaren Bodenauslauf (2b*) aufweist, wobei als Absperrmittel ein quer in den Massenstrom einschiebbarer Schieber (5) vorgesehen ist, d a d u r c h g e k e n n z e i c h n e t, d a ß der Schieber (5) an seiner vorderen Kante als eine nach unten weisende Abstreifkante (5b) ausgebildet ist.Bulk goods according to the differential principle, which have a container (1) with an outlet (la) with a weighing device (lb, lc) carrying it and a filling funnel (2) with a lockable bottom outlet (2b *) arranged directly above the open container (1). ), with a slide (5) which can be inserted transversely into the mass flow being provided as a shut-off means, characterized in that the slide (5) is designed on its front edge as a downward-pointing stripping edge (5b).
2. Waage nach Anspruch 1 , d a d u r c h g e k e n n z e i c h n e t, d a ß der Rand des Bodenauslaufs (2b*) zum Schieberblatt (5a) derart beabstandet ist und das Schieberblatt (5a) zum Rand einen solchen Überstand hat, daß unter Berücksichtigung des Schüttwinkels des Schüttgutes der Materialaustrag gesperrt ist.2. Scales according to claim 1, characterized in that the edge of the bottom outlet (2b *) is spaced from the slide blade (5a) and the slide blade (5a) has such a protrusion from the edge that the material discharge is blocked, taking into account the angle of repose of the bulk material is.
3. Waage nach Anspruch 1 oder 2 , d a d u r c h g e k e n n z e i c h n e t, d a ß der Schieber (5) als schwenkbare Schaufel ausgebildet ist.3. Scales according to claim 1 or 2, characterized in that ß the slide (5) is designed as a pivotable blade.
4. Waage nach einem der Ansprüche 1 bis 3 , d a d u r c h g e k e n n z e i c h n e t, d a ß das Blatt (5a) der schwenkbaren Schaufel zum Bodenauslauf hohlzylindrisch gekrümmt ist.4. Weighing machine according to one of claims 1 to 3, d a d u r c h g e k e n n e e c h e d, that the sheet (5a) of the pivotable scoop to the bottom outlet is curved in a hollow cylinder.
5. Waage nach einem der Ansprüche 1 bis 4, d a d u r c h g e k e n n z e i c h n e t, d a ß der Fülltrichter (2) von einer über dem Schieber (5) angeordneten Trägerplatte (3) getragen ist und der schwenkbare Schieber (5) an einem als Zylinderkolben ausgebildeten Schwenkantrieb (6) gekuppelt ist, der über ein Kugelgelenk (7) abgedichtet durch die Trägerplatte (3) geführt ist.5. Balance according to one of claims 1 to 4, characterized in that the filling funnel (2) is carried by a support plate (3) arranged above the slide (5) and the pivotable slide (5) on a swivel drive designed as a cylinder piston (6 ) is coupled, which is sealed by a ball joint (7) through the carrier plate (3).
6. Waage nach einem der Ansprüche 1 bis 4, d a d u r c h g e k e n n z e i c h n e t, d a ß der Zwischenraum zwischen der Trägerplatte (3) und dem Behälter (1) durch eine flexible, aber gas-/staubdichte Einrichtung gekapselt ist und so das Schüttgut von der Umgebung abtrennt . 6. Balance according to one of claims 1 to 4, d a d u r c h g e k e n n z e i c h n e t, d a ß the space between the carrier plate (3) and the container (1) is encapsulated by a flexible, but gas / dust-tight device and thus separates the bulk material from the environment.
EP03759913A 2002-06-14 2003-06-06 Balance for detecting mass flow rate according to the differential principle Withdrawn EP1514081A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10226722A DE10226722B4 (en) 2002-06-14 2002-06-14 Scale for recording the mass flow rate according to the differential principle
DE10226722 2002-06-14
PCT/EP2003/005945 WO2003106937A1 (en) 2002-06-14 2003-06-06 Balance for detecting mass flow rate according to the differential principle

Publications (1)

Publication Number Publication Date
EP1514081A1 true EP1514081A1 (en) 2005-03-16

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US (1) US20050145419A1 (en)
EP (1) EP1514081A1 (en)
JP (1) JP2005520177A (en)
AU (1) AU2003242637A1 (en)
DE (1) DE10226722B4 (en)
WO (1) WO2003106937A1 (en)

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US20050145419A1 (en) 2005-07-07
AU2003242637A1 (en) 2003-12-31
DE10226722B4 (en) 2004-05-06
JP2005520177A (en) 2005-07-07
DE10226722A1 (en) 2004-02-05
WO2003106937A1 (en) 2003-12-24

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