EP1640061B1 - Verfahren zur Herstellung von einer Zusammensetzung zur Verwendung zum Herstellen von Beton sowie dazu gehörender Mischer - Google Patents

Verfahren zur Herstellung von einer Zusammensetzung zur Verwendung zum Herstellen von Beton sowie dazu gehörender Mischer Download PDF

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Publication number
EP1640061B1
EP1640061B1 EP05018510A EP05018510A EP1640061B1 EP 1640061 B1 EP1640061 B1 EP 1640061B1 EP 05018510 A EP05018510 A EP 05018510A EP 05018510 A EP05018510 A EP 05018510A EP 1640061 B1 EP1640061 B1 EP 1640061B1
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EP
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Prior art keywords
container
compound
container means
weight
liquid mixture
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Not-in-force
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EP05018510A
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English (en)
French (fr)
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EP1640061A1 (de
Inventor
Luciano Peron
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PERON Srl - Unipersonale
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PERON Srl - Unipersonale
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Publication of EP1640061A1 publication Critical patent/EP1640061A1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/04—Supplying or proportioning the ingredients
    • B28C7/0454—Volumetric measuring devices, e.g. for consecutively delivering predetermined volumes of ingredients
    • 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
    • B01F35/80—Forming a predetermined ratio of the substances to be mixed
    • B01F35/88—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise
    • B01F35/881—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise by weighing, e.g. with automatic discharge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/04—Supplying or proportioning the ingredients
    • B28C7/0404—Proportioning
    • B28C7/0418—Proportioning control systems therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/04—Supplying or proportioning the ingredients
    • B28C7/0422—Weighing predetermined amounts of ingredients, e.g. for consecutive delivery

Definitions

  • the invention concerns a process for obtaining a compound to be used for making concrete screed and the relevant mixing device.
  • composition of the compound varies according to the characteristics of the screed to be obtained.
  • the compound is made on the site where the screed is to be laid, preparing first the suitable quantities of solid elements, including sand, binders, etc, and adding a given percentage of water.
  • the known technique involves the use of preparations, called pre-mixed products, that are constituted by the solid components of the compound.
  • said products comprise a solid mixture substantially made up of sand and binders, which is prepared in advance and stored in special containers that are then transported to the site where the compound is going to be laid.
  • the product also comprises special additives, also called catalyzers, that are activated when placed in contact with water.
  • Said devices comprise a container or tank provided with a first duct for conveying said solid elements, a second duct for conveying water and one or more moving blades installed inside the container.
  • the device also comprises a control unit provided with interface means, suited to control both the opening/closing of the conveying ducts and the rotation of the moving blades.
  • the control unit automatically provides for opening for a preset time the solid mixture conveying duct and the water conveying duct.
  • the compound is first amalgamated, then uniformly spread on the surface to be treated and finally properly levelled.
  • the operator proceeds to the laying of tiles or similar coverings to obtain the desired floor.
  • a first drawback posed by the process for obtaining a compound for making concrete screed and the relevant device as described above is constituted by the fact that they do not allow the percentage of components actually introduced in the container to be checked with precision. These quantities, in fact, depend on the capacity of the two conveying ducts that, mainly for the solid mixtures, is not constant due to the natural tendency of the various components to agglomerate.
  • a further inconvenience connected to the previous one is the fact that the compound obtained by adding water does not feature the optimal characteristics for making a good screed. More precisely, the compound does not contain the required percentage of each component per unit of weight.
  • the aim of the present invention is to overcome all the drawbacks described.
  • Another aim of the invention is to produce a device that can be easily transported near the laying site.
  • the proposed solution advantageously makes it possible to check more accurately both the quantity of compound prepared and the proportion of the mixtures that make it up.
  • the process subject of the invention and the examples of embodiment of a relevant mixing device described are particularly suited to obtain a compound for making concrete screed from a mixture or product of the type called "pre-mixed" P comprising sand, binders and additives.
  • the compound is obtained by mixing the solid mixture with a liquid mixture comprising, for example, water.
  • a process for obtaining a compound to be used for making concrete screed comprises the following operations set out in claim 1.
  • the compound contained in the container is mixed and the weight of the solid mixture is calculated in order to be able to stop conveying it into the container when the set quantity has been reached.
  • the weighing and the measurement of the liquid volume are carried out at the same time, in order to calculate the weight of the solid mixture present in the container.
  • the weight of the solid mixture present in the container is calculated by deducting the weight of the liquid mixture, which is given by its volume multiplied by its specific weight, from the weight of the compound contained in the container.
  • the calculated weight coincides, in fact, with the weight of the solid mixture actually present in the container.
  • a device for mixing compounds for making concrete screed that implements the method described is represented in Figure 1 , where it is indicated as a whole by 1. It comprises first means 2 for conveying a solid mixture P in container means, indicated as a whole by 4, and second means 3 for conveying a liquid mixture L in the same container means 4.
  • Measuring means constantly measure the volume of liquid mixture L conveyed into the container means 4 comprising, in the case in question, a container 41.
  • the device 1 also comprises weighing means 6 suited to weigh the compound contained in the container means 4 to obtain the weight of the solid mixture P and check its flow into the container means 4.
  • the device also comprises a control unit 7 cooperating with the measuring means 5 and with the weighing means 6, suited to automatically stop the flow of the solid mixture P into the container means 4 when the weight of the solid mixture P is substantially equal to a weight calculated according to the quantity of compound needed and to the desired proportion of the mixtures P and L.
  • a different embodiment of the device subject of the invention is differentiated from the previous ones due to the fact that the flow of the mixtures P and L can be stopped even manually by the operator.
  • the operator receives a signal, for example an acoustic signal, that indicates that the quantity of mixture conveyed is as desired.
  • the control unit 7 also comprises interface means 8 comprising a keyboard 81 and a display 82 that allow the operator to set the parameters regarding the weight of the compound to be obtained and the percentage of its various components.
  • control unit 7 comprises a microprocessor unit and a memory unit.
  • the first conveying means 2 of the solid mixture P comprise a duct 9 fed by a tank 10 of mixture P, provided at its outlet 11 with an on-off throttle valve 12 controlled by the control unit 7.
  • the duct 9 is fed by means of a rotary auger/screw 13, also controlled by the control unit 7, that transports the mixture P from the tank 10 to the container 4.
  • the mixture P is conveyed by gravity.
  • the second means 3 for conveying the liquid mixture L comprise a duct 15 that can be fed by a tank containing the liquid mixture L, provided with an on-off throttle valve 17 controlled by the control unit 7.
  • the means 5 for measuring the volume of liquid mixture L conveyed into the container 4 they comprise a flow meter 51 cooperating with the control unit 7.
  • the flow meter is of the type called turbine flow meter, but in other embodiments it may be of a different type, for example a piston or Venturi flow meter, etc.
  • the device also comprises mixing means, indicated as a whole by 18, positioned inside the container 4 and suited to stir the mixtures P, L to obtain a substantially homogeneous compound.
  • the mixing means 18 comprise several moving blades 19 fixed to a revolving shaft 20 controlled by the control unit 7.
  • the weighing means 6 comprise, in the embodiment, load cells 61 connected to the control unit 7. In other embodiments also different weighing systems may be provided.
  • the device 1 also comprises means for extracting the compound from the container 41, comprising, in the case in question, a pump provided with a suction mouth 21 and positioned on the bottom of the container 41.
  • the container 41 is tight and the compound is extracted by pressurizing the container 41 itself with a compressor unit that pushes the compound towards an outlet duct positioned on the bottom of the container 41.
  • a machine for preparing a product for making concrete screed that is also subject of the invention is represented in Figure 2 , where it is indicated as a whole by 500.
  • It comprises a motor-driven vehicle 501 on which a compound mixing device 502 of the type described above is installed.
  • the machine 500 also comprises means 503 suitable for storing and transporting a pre-mixed preparation or product. Said means are suited to stir the preparation or product in order to maintain and guarantee its homogeneity during both storage and transport to the laying site.
  • the operator proceeds by setting, via the interface means 8, the weight of the compound needed and the proportion of the solid and liquid mixtures P and L that make it up.
  • the operator introduces, according to the solid mixture or pre-mixed product P available, the percentage of water per kg of solid mixture that is necessary to obtain the best performance in term of both compound drying time and hardness of the screed obtained.
  • the control unit 7 activates the first conveying means 2 that convey the mixture P into the container 4 and then the second means 3 that convey the liquid mixture L.
  • the load cells 61 and the measuring means 5 communicate to the control unit 7 the weight of the mixtures P, L present in the container 41 and the volume of the liquid L conveyed into the same container 41, respectively.
  • the control unit 7 calculates first the weight of the liquid L and then the weight of the solid mixture P, deducting the calculated weight of the liquid from the value measured for the load cells.
  • the weight of the liquid L is calculated by the processing unit by multiplying the volume of liquid L measured from the flow meter by the specific weight of the liquid L itself, which can also be set in advance by the operator via the above mentioned interface means 8.
  • the control unit 7 then compares the weight of the two mixtures with the desired weights as indicated by the data set in advance by the operator.
  • the unit 7 stops the flow of the corresponding mixture by means of the corresponding on-off valve 12 or 17.
  • control unit activates the mixing means 18 for a lapse of time that can be set, until a substantially homogeneous compound is obtained.
  • the mixing means 18 can be activated also while the mixtures P, L are conveyed into the container, thus reducing the time necessary to prepare the compound.

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  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Road Paving Machines (AREA)
  • Saccharide Compounds (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Claims (22)

  1. Verfahren zum Erhalten einer Masse zum Herstellen von Betonestrich, umfassend die folgenden Vorgänge:
    - das Festlegen der benötigten Menge an Masse und des Verhältnisses zwischen festen (P) und flüssigen Gemischen (L), aus denen sie besteht;
    - das Zuführen des festen Gemischs zu Behältermitteln (4);
    - das Zuführen des flüssigen Gemischs (L) zu den Behältermitteln (4) und das Messen des Volumens des den Behältermitteln (4) zugeführten flüssigen Gemischs, um imstande zu sein, die Zufuhr der Flüssigkeit zu stoppen, wenn die festgelegte Menge erreicht worden ist;
    - das Wiegen der im Behälter enthaltenen Masse;
    - das Mischen der in den Behältermitteln (4) enthaltenen Masse,
    dadurch gekennzeichnet, dass es ferner Folgendes umfasst:
    - das Berechnen des Gewichts des flüssigen Gemischs, das den Behältermitteln zugeführt wurde;
    - das Berechnen des Gewichts des festen Gemischs durch Abziehen des berechneten Gewichts des Volumens an flüssigem Gemisch, das den Behältermitteln zugeführt wurde, vom Gewicht der im Behälter enthaltenen Masse und Stoppen seiner Zufuhr in den Behälter, wenn die festgelegte Menge erreicht worden ist.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass das Gewicht des Volumens an flüssigem Gemisch, das den Behältermitteln zugeführt wurde, durch Multiplizieren des Volumens an flüssigem Gemisch, das den Behältermitteln zugeführt wurde, mit dem spezifischen Gewicht des flüssigen Gemischs selbst berechnet wird.
  3. Verfahren nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass das flüssige Gemisch Wasser umfasst.
  4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das feste Gemisch Sand und/oder Bindemittel und/oder Additive umfasst.
  5. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Vorgänge des Wiegens und des Volumenmessens zur gleichen Zeit durchgeführt werden.
  6. Vorrichtung (1) zum Mischen von Massen zum Herstellen von Betonestrich, umfassend:
    - erste (2) und zweite (3) Zufuhrmittel und Behältermittel (4), wobei die ersten und die zweiten Zufuhrmittel dazu geeignet sind, mindestens ein festes Gemisch (P) bzw. ein flüssiges Gemisch (L), aus denen die Masse besteht, den Behältermitteln (4) zuzuführen;
    - Messmittel (5), die dazu geeignet sind, das Volumen des den Behältermitteln (4) zugeführten flüssigen Gemischs (L) zu messen;
    - Wiegemittel (6), die dazu geeignet sind, die in den Behältermitteln (4) enthaltene Masse zu wiegen;
    - Mischmittel (18), die im Inneren der Behältermittel (4) angeordnet sind und dazu geeignet sind, die Gemische zu rühren,
    dadurch gekennzeichnet, dass sie ferner Folgendes umfasst:
    - Mittel, die dazu geeignet sind, das Gewicht des Volumens an flüssigem Gemisch, das den Behältermitteln (4) zugeführt wurde, zu berechnen, sowie Mittel, die dazu geeignet sind, das Gewicht des festen Gemischs (P) durch Abziehen des berechneten Gewichts des Volumens an flüssigem Gemisch, das den Behältermitteln (4) zugeführt wurde, vom Gewicht der in den Behältermitteln (4) enthaltenen Masse zu berechnen und seinen Fluss in die Behältermittel (4) zu kontrollieren.
  7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass die Vorrichtung ferner Mittel umfasst, die dazu geeignet sind, das Gewicht des Volumens an flüssigem Gemisch, das den Behältermitteln (4) zugeführt wurde, durch Multiplizieren des Volumens an flüssigem Gemisch, das den Behältermitteln (4) zugeführt wurde, mit dem spezifischen Gewicht des flüssigen Gemischs selbst zu berechnen.
  8. Vorrichtung (1) nach einem der Ansprüche 6 oder 7, dadurch gekennzeichnet, dass die Vorrichtung (1) zudem Signalgabemittel umfasst, die mit den Wiegemitteln (6) zusammenwirken und dazu geeignet sind, zumindest dann ein Signal auszusenden, wenn die Menge an festem Gemisch (P) in den Behältermitteln (4) im Wesentlichen der Menge an Gemisch entspricht, die gewünscht ist und/oder die festgelegt werden kann.
  9. Vorrichtung (1) nach einem der Ansprüche 6 bis 8, dadurch gekennzeichnet, dass die Vorrichtung (1) zudem eine Steuereinheit (7) umfasst, die mit den Messmitteln (5) und den Wiegemitteln (6) zusammenwirkt und dazu geeignet ist, den Fluss des festen Gemischs (P) in die Behältermittel (4) automatisch zu stoppen, wenn das Gewicht des festen Gemischs (P) in den Behältermitteln (4) im Wesentlichen der Menge entspricht, die gewünscht ist und/oder die festgelegt werden kann.
  10. Vorrichtung (1) nach einem der Ansprüche 6 bis 9, dadurch gekennzeichnet, dass die Steuereinheit (7) dazu geeignet ist, den Fluss des flüssigen Gemischs (L) automatisch zu stoppen, wenn die gemessene Menge im Wesentlichen der Menge entspricht, die gewünscht ist und/oder die festgelegt werden kann.
  11. Vorrichtung (1) nach einem der Ansprüche 9 oder 10, dadurch gekennzeichnet, dass die Steuereinheit (7) Schnittstellenmittel (8) zum Festlegen von zumindest der benötigten Menge an Masse und des Verhältnisses zwischen den festen und flüssigen Gemischen, aus denen die Masse besteht, umfasst.
  12. Vorrichtung nach einem der Ansprüche 9 bis 11, dadurch gekennzeichnet, dass die Steuereinheit (7) eine Verarbeitungseinheit umfasst, die dazu geeignet ist, die Menge an festem Gemisch (P), die den Behältermitteln (4) zuzuführen ist, gemäß den Mengen an Masse, die gewünscht sind und/oder die festgelegt werden können, und den Verhältnissen der Gemische (P, L) zu berechnen.
  13. Vorrichtung (1) nach einem der Ansprüche 6 bis 12, dadurch gekennzeichnet, dass die ersten Zufuhrmittel (2) mindestens eine Leitung (9) umfassen, die mit mindestens einem Absperrventil (12) ausgestattet ist.
  14. Vorrichtung (1) nach einem der Ansprüche 6 bis 13, dadurch gekennzeichnet, dass die zweiten Zufuhrmittel (3) mindestens eine zweite Leitung (5) umfassen, die mit mindestens einem Absperrventil (17) ausgestattet ist.
  15. Vorrichtung (1) nach einem der Ansprüche 13 oder 14 wenn verbunden mit Anspruch 10, dadurch gekennzeichnet, dass das Absperrventil (12, 17) von der Steuereinheit (7) gesteuert ist.
  16. Vorrichtung (1) nach einem der Ansprüche 6 bis 15, dadurch gekennzeichnet, dass die Mischmittel (18) mindestens eine sich bewegende Schaufel (19) umfassen.
  17. Vorrichtung (1) nach einem der Ansprüche 6 bis 16, dadurch gekennzeichnet, dass die Vorrichtung (1) Mittel zur Entnahme der Masse aus den Behältermitteln (4) umfasst.
  18. Vorrichtung (1) nach Anspruch 17, dadurch gekennzeichnet, dass die Mittel zur Entnahme der Masse mindestens eine Pumpe umfassen.
  19. Vorrichtung (1) nach Anspruch 17, dadurch gekennzeichnet, dass die Mittel zur Entnahme der Masse eine Kompressoreinheit umfassen.
  20. Vorrichtung (1) nach Anspruch 19, dadurch gekennzeichnet, dass die Behältermittel (4) einen Druckbehälter (41) umfassen, der mit den Mitteln zur Entnahme zusammenwirkt.
  21. Vorrichtung (1) nach einem der Ansprüche 6 bis 20, dadurch gekennzeichnet, dass die Wiegemittel (6) mindestens eine Wägezelle (61) umfassen.
  22. Maschine (500) zum Herstellen von Massen zum Herstellen von Betonestrich, umfassend ein Fahrzeug (501) und eine Vorrichtung (502) zum Mischen von Massen zum Herstellen von Betonestrich, dadurch gekennzeichnet, dass die Maschine eine Vorrichtung (1) zum Mischen von Massen zum Herstellen von Betonestrich nach einem der Ansprüche 7 bis 21 umfasst.
EP05018510A 2004-09-24 2005-08-25 Verfahren zur Herstellung von einer Zusammensetzung zur Verwendung zum Herstellen von Beton sowie dazu gehörender Mischer Not-in-force EP1640061B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000227A ITVI20040227A1 (it) 2004-09-24 2004-09-24 Procedimento per ottenere un impasto per la realizzazione di sottofondi per pavimentazione ed un relativo dispositivo di miscelazione

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Publication Number Publication Date
EP1640061A1 EP1640061A1 (de) 2006-03-29
EP1640061B1 true EP1640061B1 (de) 2010-05-26

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EP05018510A Not-in-force EP1640061B1 (de) 2004-09-24 2005-08-25 Verfahren zur Herstellung von einer Zusammensetzung zur Verwendung zum Herstellen von Beton sowie dazu gehörender Mischer

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EP (1) EP1640061B1 (de)
AT (1) ATE468911T1 (de)
DE (1) DE602005021440D1 (de)
IT (1) ITVI20040227A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202012101942U1 (de) 2012-05-25 2013-05-27 Sanitär Fliesen Natursteine Volk GmbH Vorrichtung zum Anmachen von Gemischen mit Sand-, Zement- und flüssigen chemischen Additiven, insbesondere von Estrich

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2900088B1 (fr) * 2006-04-20 2010-09-24 Europ Equipement Centrale a beton
FR2955833B1 (fr) * 2010-01-29 2012-03-23 Francois Senger Procede et accessoire pour le conditionnement selectif d'un volume d'agglomerat de materiaux provenant d'une centrale de fabrication
KR20180063987A (ko) * 2016-12-03 2018-06-14 김광태 교반 장치 및 그 관리 시스템

Family Cites Families (3)

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Publication number Priority date Publication date Assignee Title
JPS63283731A (ja) * 1987-05-14 1988-11-21 Fuji Photo Film Co Ltd 液体・粉体計量混合装置
DE19916373A1 (de) * 1999-04-12 2000-10-26 Wacker Polymer Systems Gmbh Mobile Vorrichtung zur kontinuierlichen und diskontinuierlichen Herstellung von wässrigen Flüssigfarben aus pulverförmigen Bestandteilen und Wasser
US6491421B2 (en) 2000-11-29 2002-12-10 Schlumberger Technology Corporation Fluid mixing system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202012101942U1 (de) 2012-05-25 2013-05-27 Sanitär Fliesen Natursteine Volk GmbH Vorrichtung zum Anmachen von Gemischen mit Sand-, Zement- und flüssigen chemischen Additiven, insbesondere von Estrich

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EP1640061A1 (de) 2006-03-29
ITVI20040227A1 (it) 2004-12-24
DE602005021440D1 (de) 2010-07-08
ATE468911T1 (de) 2010-06-15

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