EP1198287B1 - Method and device for producing foams, especially foamed porous light-density materials - Google Patents
Method and device for producing foams, especially foamed porous light-density materials Download PDFInfo
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- EP1198287B1 EP1198287B1 EP00954492A EP00954492A EP1198287B1 EP 1198287 B1 EP1198287 B1 EP 1198287B1 EP 00954492 A EP00954492 A EP 00954492A EP 00954492 A EP00954492 A EP 00954492A EP 1198287 B1 EP1198287 B1 EP 1198287B1
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- European Patent Office
- Prior art keywords
- foaming
- injection pump
- foam
- slurry
- additives
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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
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/235—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids for making foam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/30—Injector mixers
- B01F25/31—Injector mixers in conduits or tubes through which the main component flows
- B01F25/311—Injector mixers in conduits or tubes through which the main component flows for mixing more than two components; Devices specially adapted for generating foam
Definitions
- the invention relates to a method for producing a foam, in particular of a foamed porous substance, in which a slurry that a carrier liquid and a foaming agent and optionally further Additives such as retarders, accelerators, stabilizers, Liquefiers, binders and fillers, by adding a gas to one Foam or pore lightweight material is converted.
- the invention is therefore based on the object of a method and one for its Implementation of suitable apparatus of the type mentioned at the outset, that regardless of the type of carrier liquids used and the Aggregates and depending on how the pressure and mixing ratios should be set appropriately, optimal results are always achieved, even if the system is to operate in batch mode.
- the sludge is provided according to the invention is initially conveyed to a buffer, from which it is connected to a downstream, an adjustable air supply valve having a foaming device is supplied such that the pressure ratios in the premixing area and Foaming area can be set and controlled independently of each other.
- This method according to the invention is preferably carried out in such a way that a carrier liquid or a carrier liquid and the sludge containing additives in a first injection pump the foaming agent is mixed and placed in the buffer and that a second injection pump is used as the foaming device the gas used for foaming while sucking in the sludge from the Buffer is fed under pressure.
- the provision according to the invention of a buffer store between the first injection pump, which only serves to mix the carrier liquid with all the desired additives, and the second, the actual foaming with the addition of a gas, for example air, has the advantage that an accurate and uniform dosage the additive is also possible in the smallest quantities and that the pressure ratios of the first injection pump and in the second injection pump can also be set and regulated completely independently of one another. This in turn enables the production of light pores with a dry bulk density below 100 kg / m 3 .
- the process for making the foam or a pore lighter differs only by the additives used.
- the Carrier liquid and / or the additives, and / or the sludge and / or the foaming gas via adjustable metering devices, in particular flow meters, Pumps and control valves are fed.
- Both a foam and a Foamed pore lightweight material can be controlled by such a program Manufacture electrical control device in variable composition, wherein in addition to the free adjustability and programmability, a variety of Standard programs can be provided for a wide variety of applications and for the most diverse types of foams or foams Pore light substances automatically the suitable production conditions pretend and make sure that a certain amount of carrier fluid the optimal amounts of additives or additives are added and both mixing under the optimal printing conditions as well Foaming in the second injection pump under the most suitable Process printing takes place.
- the sludges in Dependence on the fill level of the intermediate storage is manufactured, d. H. the first Injection pump continuously up to a certain filling level of the buffer manufactures, regardless of whether a consumption on the second injection pump takes place or not.
- the first injection pump can be much more uniform Comply with the production conditions of the sludge and the suction of the additives can also actually be metered, which is very discontinuous Consumption on the frothing device and one accordingly at the same time thus discontinuous operation of the first, for admixing the Aggregate serving, injection pump would not be the case.
- the invention Operation with the buffer memory that the first injection pump has for a long time until it is filled to a certain extent has the advantage that in addition to the more uniform mixture and the resulting better quality of the foam or the foamed pore lightweight material the device parts are less worn and consequently the system requires less maintenance and can run longer.
- a device for carrying out the method according to the invention, which is characterized in that the output of a first injection pump with an upstream liquid feed pump and a suction inlet for additives with the inlet and the intake inlet one with one upstream gas supply device provided second injection pump with is connected to the output of the buffer.
- the gas supply device can either be a gas pump or optionally also be a gas pressure accumulator, for example a high-pressure gas bottle with connected control outlet valve.
- metering devices Flow meters, pumps, control valves or the like. At least partially Remotely controllable and connected to a programmable control unit are.
- the device according to the invention comprises a first injection pump 1 with a to an inlet 3 leading to a nozzle 2, which is either a carrier liquid, such as water (especially when making a foam), or but also a sludge consisting of a carrier liquid and additives, such as binders, fillers, granules or the like.
- a carrier liquid such as water (especially when making a foam)
- a sludge consisting of a carrier liquid and additives, such as binders, fillers, granules or the like.
- the supply takes place via a controllable pump, not shown.
- the injection pump 1 points next to the inlet 3 for the carrier liquid or the sludge an intake 4 for additional additives, in particular for one Foaming agent on, under the effect of the negative pressure generated by the nozzle 2 sucked in and intimately mixed with the carrier liquid or the sludge becomes.
- the so produced is via the outlet 5 of the injection pump 1 Sludge 6 conveyed into a buffer 7, which with its outlet 8 the suction inlet 9 of a second injection pump 10 is connected.
- the injection pump 1 constructed second injection pump 10 also a nozzle 11 and an inlet 12 is connected to a gas pressure accumulator with this inlet, either a gas bottle with a pressure reducing valve or also connected to a gas feed pump, the simple ambient air as a foaming gas processed.
- the gas emerging from the nozzle 11 sucks the Sludges from the intermediate container 7 and preferably brings them to the end of the Discharge foam tube 13 designed to widen conically, so that at 14 a foam or when adding the appropriate Binder materials and fillers a foamed porous substance emerges.
- the pumps for supplying injection pumps 1 and 10 and all other metering devices and valves that are not in the drawing for the sake of simplicity are shown with, and optionally the adjustable nozzles 2 and 11 can both adjustable by hand and preferably at least partially remote-controlled controllable and connected to a programmable control unit. This allows exact and the desired conditions, that is The type and degree of foaming of a foam and the dry bulk density of a Achieve the most optimally adapted production conditions.
- the intermediate container 7 is only indicated schematically as a box 15 Level measuring device for the one from the injection pump 1 into the entrance 16 of the intermediate tank introduced sludge equipped, also connected to the programmable control unit already mentioned is to prevent the first injection pump from being intermittent in the same way must be operated like the second injection pump, which is working is often switched on and off very discontinuously on a construction site.
- the first Injection pump 1 conveys sludge into the intermediate tank until this is filled to a predetermined level, regardless of whether the second Injection pump works or not, d. H. regardless of whether foam or Pore lightweight is actually supposed to be produced right now.
- the first injection pump either works continuously (if a permanent There is a need for the second injection pump) or at least quasi is operated continuously over a longer period of time and not always entirely is switched on and off briefly.
- This short-term switching on and off would the exact mixing and suction of the carrier liquid or Sludges and the additives in the injection pump 1 and their intimate mixing severely impair and thus prevent that actually optimally stable and foams having uniform product properties or Pore light substances can be achieved.
Abstract
Description
Die Erfindung bezieht sich auf ein Verfahren zur Herstellung eines Schaums, insbesondere eines, aufgeschäumten Porenleichtstoffs, bei dem eine Schlämme, die eine Trägerflüssigkeit und einen Schaumbildner sowie gegebenenfalls weitere Zusatzstoffe, wie beispielsweise Verzögerer, Beschleuniger, Stabilisatoren, Verflüssiger, Binder und Füllstoffe, beinhaltet, durch Zufügung eines Gases in einen Schaum bzw. Porenleichtstoff umgewandelt wird.The invention relates to a method for producing a foam, in particular of a foamed porous substance, in which a slurry that a carrier liquid and a foaming agent and optionally further Additives such as retarders, accelerators, stabilizers, Liquefiers, binders and fillers, by adding a gas to one Foam or pore lightweight material is converted.
Bei einem aus dem Patent DE 41 18 537 C1 (EP-A-0 517 207) bekannt gewordenen Verfahren der vorstehend beschriebenen Art erfolgt die Vermischung aller Anteile und die Aufschäumung in einem Ventilblock mit zwei hintereinander angeordneten Düsen, was in der Praxis eine sehr kleinräumige und damit auch einfache und billige Baueinheit ergib. Diese bekannte Anordnung hat das mit ihr auszuführende Verfahren, arbeitet aber nur unter bestimmten Betriebsbedingungen fehlerfrei und insbesondere nur dann, wenn kontinuierlich gearbeitet wird. Wenn sehr diffizile Mischverhältnisse der Zuschlagstoffe einerseits und der notwendigen Druckverhältnisse andererseits auftreten und wenn noch dazu die Schaum- oder Porenleichtstoffproduktion sehr diskontinuierlich erfolgen soll, ergeben sich jedoch erhebliche Funktionsprobleme.In one known from the patent DE 41 18 537 C1 (EP-A-0 517 207) Methods of the type described above are mixed together Proportions and foaming in a valve block with two arranged in a row Nozzles, which in practice is very small and therefore simple and cheap unit result. This known arrangement has to be carried out with it Procedure, but only works under certain operating conditions error-free and especially only if work is carried out continuously. If very difficult mixing ratios of the aggregates on the one hand and the necessary ones Pressure conditions occur on the other hand and if the foam or Pore light substance production should be carried out very discontinuously, however significant functional problems.
Der Erfindung liegt daher die Aufgabe zugrunde, ein Verfahren und eine zu seiner Durchführung geeignete Vorrichtung der eingangs genannten Art so weiterzubilden, dass unabhängig von der Art der verwendeten Trägerflüssigkeiten und der Zuschlagstoffe und abhängig davon, wie die Druck- und Mischverhältnisse zweckmäßigerweise eingestellt werden soll, stets optimale Ergebnisse erzielt werden, auch wenn die Anlage im diskontinuierlichen Betrieb arbeiten soll.The invention is therefore based on the object of a method and one for its Implementation of suitable apparatus of the type mentioned at the outset, that regardless of the type of carrier liquids used and the Aggregates and depending on how the pressure and mixing ratios should be set appropriately, optimal results are always achieved, even if the system is to operate in batch mode.
Zur Lösung dieser Aufgabe ist erfindungsgemäß vorgesehen, dass die Schlämme zunächst in einen Zwischenspeicher gefördert wird, aus dem sie einer nachgeschalteten, ein regelbares Luftzuführventil aufweisenden Aufschäumeinrichtung zugeführt wird, derart, dass die Druckverhältnisse im Vormischbereich und im Verschäumbereich unabhängig voneinander einstell- und regelbar sind.To achieve this object, the sludge is provided according to the invention is initially conveyed to a buffer, from which it is connected to a downstream, an adjustable air supply valve having a foaming device is supplied such that the pressure ratios in the premixing area and Foaming area can be set and controlled independently of each other.
Dabei erfolgt die Durchführung dieses erfindungsgemäßen Verfahrens bevorzugt in der Weise, dass eine Trägerflüssigkeit, bzw. eine diese Trägerflüssigkeit und die Zusatzstoffe enthaltende Vorschlämme, in einer ersten Injektionspumpe mit dem Schaumbildner vermischt und in den Zwischenspeicher eingebracht wird und dass als Aufschäumeinrichtung eine zweite Injektionspumpe verwendet wird, der das zum Aufschäumen dienende Gas unter Ansaugung der Schlämme aus dem Zwischenspeicher unter Druck zugeführt wird.This method according to the invention is preferably carried out in such a way that a carrier liquid or a carrier liquid and the sludge containing additives in a first injection pump the foaming agent is mixed and placed in the buffer and that a second injection pump is used as the foaming device the gas used for foaming while sucking in the sludge from the Buffer is fed under pressure.
Das erfindungsgemäße Vorsehen eines Zwischenspeichers zwischen der ersten Injektionspumpe, die lediglich der Vermischung der Trägerflüssigkeit mit allen gewünschten Zuschlagstoffen dient und der zweiten, das eigentliche Aufschäumen unter Zufügung eines Gases, beispielsweise von Luft, bewirkenden zweiten Injektionspumpe hat den Vorteil, dass eine genaue und gleichmäßige Dosierung der Additive auch in kleinsten Mengen möglich ist und dass darüber hinaus auch die Druckverhältnisse der ersten Injektionspumpe und in der zweiten Injektionspumpe völlig unabhängig voneinander einstell- und regelbar sind. Dies wiederum ermöglicht die Herstellung von Porenleichtstoffen mit einer Trockenrohdichte unter 100 kg/m3.The provision according to the invention of a buffer store between the first injection pump, which only serves to mix the carrier liquid with all the desired additives, and the second, the actual foaming with the addition of a gas, for example air, has the advantage that an accurate and uniform dosage the additive is also possible in the smallest quantities and that the pressure ratios of the first injection pump and in the second injection pump can also be set and regulated completely independently of one another. This in turn enables the production of light pores with a dry bulk density below 100 kg / m 3 .
Das Verfahren für die Herstellung des Schaums oder eines Porenleichtstoffs unterscheidet sich dabei lediglich durch die verwendeten Additive. Verwendet man nur eine Trägerflüssigkeit, ein Schaummittel und gegebenenfalls einen Stabilisator, so erzeugt man daraus einen Schaum. Fügt man auch noch weitere Bindemittel, beispielsweise Zement od. dgl. und gegebenenfalls auch Zuschlagstoffe wie Granulat od. dgl. bei, so lässt sich anstelle eines Schaums ein aufgeschäumter Porenleichtstoff erzeugen. The process for making the foam or a pore lighter differs only by the additives used. One uses only a carrier liquid, a foaming agent and possibly a stabilizer, this is how you create a foam. If you also add other binders, for example cement or the like and optionally also aggregates like granules or the like, a foamed one can be used instead of a foam Generate pore light substance.
Unabhängig davon, ob ein Schaum oder ein aufgeschäumter Porenleichtstoff erzeugt werden soll, kann in Weiterbildung der Erfindung vorgesehen sein, dass die Trägerflüssigkeit und/oder die Zuschlagstoffe, und/oder die Schlämme und/oder das Aufschäum-Gas über einstellbare Dosiervorrichtungen, insbesondere Durchflussmesser, Pumpen und Regelventile zugeführt werden.Regardless of whether a foam or a foamed porosity creates In a further development of the invention, it can be provided that the Carrier liquid and / or the additives, and / or the sludge and / or the foaming gas via adjustable metering devices, in particular flow meters, Pumps and control valves are fed.
Obgleich es selbstverständlich möglich ist und in der Praxis auch vorgesehen sein soll, um unter vereinfachten Produktionsbedingungen eine einfache leicht transportable Vorrichtung zur Herstellung des Schaums oder des Porenleichtstoffs zu realisieren, die verschiedenen Dosiervorrichtungen von Hand, beispielsweise durch entsprechende Stellräder zu verstellen, hat es sich in weiterer Ausgestaltung der Erfindung doch als besonders zweckmäßig erwiesen, wenn die Dosiervorrichtungen zur Erzielung der gewünschten Eigenschaften des Schaums bzw. des Porenleichtstoffs über eine programmgesteuerte elektrische Steuervorrichtung aufeinander abgestimmt geregelt werden. Sowohl ein Schaum, als auch ein aufgeschäumter Porenleichtstoff lässt sich durch eine solche programmgesteuerte elektrische Steuervorrichtung in variabler Zusammensetzung herstellen, wobei neben der freien Verstell- und Programmierbarkeit bevorzugt eine Vielzahl von Standardprogrammen vorgesehen sein können, die für die verschiedensten Anwendungsfälle und für die verschiedenartigsten Typen von Schäumen bzw. aufgeschäumten Porenleichtstoffen die geeigneten Produktionsbedingungen automatisch vorgeben und dafür sorgen, dass einer bestimmten Menge der Trägerflüssigkeit die optimalen Mengen der Zuschlagstoffe oder Additive zugeführt und sowohl die Vermischung unter den optimalen Druckbedingungen als auch das Aufschäumen in der zweiten Injektionspumpe jeweils unter den geeignetsten Verfahrensdrucken erfolgt.Although it is of course possible and also provided in practice is supposed to be a simple easily transportable under simplified production conditions Device for producing the foam or the pore lightweight realize the various dosing devices by hand, for example to adjust by appropriate setting wheels, it has in a further embodiment the invention proved to be particularly useful when the metering devices to achieve the desired properties of the foam or of the porous light substance via a program-controlled electrical control device be coordinated. Both a foam and a Foamed pore lightweight material can be controlled by such a program Manufacture electrical control device in variable composition, wherein in addition to the free adjustability and programmability, a variety of Standard programs can be provided for a wide variety of applications and for the most diverse types of foams or foams Pore light substances automatically the suitable production conditions pretend and make sure that a certain amount of carrier fluid the optimal amounts of additives or additives are added and both mixing under the optimal printing conditions as well Foaming in the second injection pump under the most suitable Process printing takes place.
In weiterer Ausgestaltung der Erfindung kann dabei auch vorgesehen sein, dass bei diskontinuierlichem Verbrauch an der Aufschäumeinrichtung die Schlämme in Abhängigkeit vom Füllstand des Zwischenspeichers gefertigt wird, d. h. die erste Injektionspumpe kontinuierlich bis zu einem bestimmten Füllstand des Zwischenspeichers fertigt, unabhängig davon ob ein Verbrauch an der zweiten Injektionspumpe stattfindet oder nicht. Durch dieses kontinuierliche oder quasi kontinuierliche Arbeiten der ersten Injektionspumpe lassen sich sehr viel gleichmäßigere Fertigungsbedingungen der Schlämme einhalten und das Ansaugen der Additive kann hierbei auch tatsächlich dosiert erfolgen, was bei einem sehr diskontinuierlichen Verbrauch an der Aufschäumeinrichtung und einem entsprechend gleichzeitig damit erfolgenden diskontinuierlichen Betrieb der ersten, zur Beimischung der Zuschlagstoffe dienenden, Injektionspumpe nicht der Fall wäre. Der erfindungsgemäße Betrieb mit dem Zwischenspeicher, dem die erste Injektionspumpe so lange zufördert bis dieser bis zu einem gewissen Ausmaß gefüllt ist, hat den Vorteil, dass neben der gleichmäßigeren Mischung und der daraus resultierenden besseren Qualität des Schaums bzw. des aufgeschäumten Porenleichtstoffs auch die Vorrichtungsteile weniger abgenutzt werden und demzufolge die Anlage wartungsfreier und länger laufen kann.In a further embodiment of the invention, it can also be provided that with discontinuous consumption at the frothing device the sludges in Dependence on the fill level of the intermediate storage is manufactured, d. H. the first Injection pump continuously up to a certain filling level of the buffer manufactures, regardless of whether a consumption on the second injection pump takes place or not. Through this continuous or quasi-continuous Working the first injection pump can be much more uniform Comply with the production conditions of the sludge and the suction of the additives can also actually be metered, which is very discontinuous Consumption on the frothing device and one accordingly at the same time thus discontinuous operation of the first, for admixing the Aggregate serving, injection pump would not be the case. The invention Operation with the buffer memory that the first injection pump has for a long time until it is filled to a certain extent has the advantage that in addition to the more uniform mixture and the resulting better quality of the foam or the foamed pore lightweight material the device parts are less worn and consequently the system requires less maintenance and can run longer.
Zur Durchführung des erfindungsgemäßen Verfahrens ist eine Vorrichtung vorgesehen, die dadurch gekennzeichnet, dass der Ausgang einer ersten Injektionspumpe mit einer vorgeschalteten Flüssigkeitszuführpumpe und einem Einsaugeinlass für Additive mit dem Eingang und der Einsaugeinlass einer mit einer vorgeschalteten Gaszuführeinrichtung versehenen zweiten Injektionspumpe mit dem Ausgang des Zwischenspeichers verbunden ist.A device is provided for carrying out the method according to the invention, which is characterized in that the output of a first injection pump with an upstream liquid feed pump and a suction inlet for additives with the inlet and the intake inlet one with one upstream gas supply device provided second injection pump with is connected to the output of the buffer.
Die Gaszuführeinrichtung kann dabei entweder eine Gaspumpe oder gegebenenfalls auch ein Gasdruckspeicher sein, beispielsweise eine Hochdruckgasflasche mit angeschlossenem Regelauslassventil.The gas supply device can either be a gas pump or optionally also be a gas pressure accumulator, for example a high-pressure gas bottle with connected control outlet valve.
Schließlich liegt es auch noch im Rahmen der Erfindung, dass die Dosiervorrichtungen, Durchflussmesser, Pumpen, Regelventile od. dgl. zumindest teilweise ferngesteuert regelbar und mit einer programmierbaren Steuereinheit verbunden sind. Finally, it is also within the scope of the invention that the metering devices, Flow meters, pumps, control valves or the like. At least partially Remotely controllable and connected to a programmable control unit are.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung eines Ausführungsbeispiels sowie anhand der Zeichnung, die schematisch eine erfindungsgemäße Vorrichtung zur Herstellung eines Schaums oder eines aufgeschäumten Porenleichtstoffs zeigt.Further advantages, features and details of the invention result from the following description of an embodiment and based on the Drawing, which schematically shows an inventive device for manufacturing a foam or a foamed pore lightweight.
Die erfindungsgemäße Vorrichtung umfasst eine erste Injektionspumpe 1 mit einem
zu einer Düse 2 führenden Einlass 3, dem entweder einer Trägerflüssigkeit,
wie beispielsweise Wasser (speziell bei der Herstellung eines Schaums), oder
aber auch eine Vorschlämme, bestehend aus einer Trägerflüssigkeit und Zuschlagstoffen,
wie Binderstoffen, Füllstoffen, Granulaten od. dgl., zugeführt wird.
Die Zuführung erfolgt über eine nicht gezeigte regelbare Pumpe. Die Injektionspumpe
1 weist neben dem Einlass 3 für die Trägerflüssigkeit oder die Vorschlämme
einen Einsaugeinlass 4 für zusätzliche Additive, insbesondere für einen
Schaumbildner auf, der unter der Wirkung des von der Düse 2 erzeugten Unterdrucks
angesaugt und innig mit der Trägerflüssigkeit oder der Vorschlämme vermischt
wird. Über den Auslass 5 der Injektionspumpe 1 wird die so hergestellte
Schlämme 6 in einen Zwischenspeicher 7 gefördert, der mit seinem Auslass 8 mit
dem Einsaugeinlass 9 einer zweiten Injektionspumpe 10 verbunden ist. Diese entsprechen
der Injektionspumpe 1 aufgebaute zweite Injektionspumpe 10 mit ebenfalls
einer Düse 11 und einem Einlass 12 ist mit diesem Einlass an einen Gasdruckspeicher,
also entweder eine Gasflasche mit Druckreduzierventil oder aber
auch eine Gasförderpumpe angeschlossen, die als Aufschäumgas einfache Umgebungsluft
verarbeitet. Das aus der Düse 11 austretende Gas saugt die
Schlämme aus dem Zwischenbehälter 7 an und bringt diese am Ende des vorzugsweise
konisch aufgeweitet ausgebildeten Austragschaumrohrs 13 zum Aufschäumen,
so dass bei 14 ein Schaum oder aber bei Zufügung der entsprechenden
Binderstoffe und Füllstoffe ein aufgeschäumter Porenleichtstoff austritt.The device according to the invention comprises a first injection pump 1 with a
to an inlet 3 leading to a
Die Pumpen zum Versorgen der Injektionspumpe 1 und 10 und alle sonstigen Dosiervorrichtungen
und Ventile, die der Einfachheit halber in der Zeichnung nicht
mit dargestellt sind, sowie gegebenenfalls die verstellbaren Düsen 2 und 11 können
sowohl von Hand verstellbar als auch bevorzugt zumindest teilweise ferngesteuert
regelbar und mit einer programmierbaren Steuereinheit verbunden sein.
Dadurch lassen sich exakte und den jeweils gewünschten Verhältnissen, also der
Art und dem Aufschäumgrad eines Schaums sowie der Trockenrohdichte eines
Porenleichtstoffs am optimalsten angepasste Produktionsverhältnisse erzielen.
Der Zwischenbehälter 7 ist mit einer nur schematisch als Kästchen 15 angedeuteten
Füllstandsmesseinrichtung für die ein von der Injektionspumpe 1 in den Eingang
16 des Zwischenbehälters eingebrachte Schlämme ausgerüstet, die ebenfalls
mit der bereits angesprochenen programmierbaren Steuereinheit verbunden
ist, um zu vermeiden, dass die erste Injektionspumpe in gleicher Weise intermittierend
betrieben werden muss, wie die zweite Injektionspumpe, die ja beim Arbeiten
auf einer Baustelle oft sehr diskontinuierlich aus- und eingeschaltet wird. Die erste
Injektionspumpe 1 fördert Schlämme so lange in den Zwischenbehälter bis dieser
bis zu einem vorgegebenen Füllstand gefüllt ist, unabhängig davon, ob die zweite
Injektionspumpe arbeitet oder nicht, d. h. unabhängig davon, ob Schaum oder
Porenleichtstoff tatsächlich im Augenblick produziert werden soll. Dies bedeutet,
dass die erste Injektionspumpe entweder kontinuierlich arbeitet (wenn ein ständiger
Bedarf an der zweiten Injektionspumpe besteht) oder aber zumindest quasi
kontinuierlich über einen längeren Zeitraum betrieben wird und nicht immer ganz
kurzfristig ein- und ausgeschaltet wird. Dieses kurzfristige Ein- und Ausschalten
würde die exakte Vermischung und Ansaugung der Trägerflüssigkeit bzw. der
Vorschlämme und der Additive in der Injektionspumpe 1 und ihre innige Vermischung
stark beeinträchtigen und somit verhindern, dass tatsächlich optimal beständige
und gleichmäßige Produkteigenschaften aufweisende Schäume oder
Porenleichtstoffe erzielt werden können.The pumps for supplying
Claims (7)
- Method of manufacturing a foam, in particular a lightweight porous material, in which a slurry containing a carrier liquid and a foaming agent as well as optional further additives, such as restrainers, accelerators, stabilisers, liquefiers, binders and fillers, is converted into a foam or lightweight porous material by the addition of a gas, characterised in that the slurry is first conveyed into an intermediate store from which it is fed to a downstream foaming device having a controllable air supply valve, in such a manner that the pressure conditions in the pre-mixing region and in the foaming region can be set and adjusted independently.
- Method according to claim 1, characterised in that a carrier liquid or a pre-slurry containing this carrier liquid and the additives is mixed with the foaming agent in a first injection pump and is brought to the intermediate store, and in that as a foaming device a second injection pump is used, to which the gas for foaming is supplied while the slurry is being drawn from the intermediate store under pressure.
- Method according to claim 1 or 2, characterised in that the carrier liquid and/or the additives and/or the slurry and/or the foaming gas are supplied via adjustable metering devices, in particular flow meters, pumps and control valves.
- Method according to claim 3, characterised in that the metering devices are set according to the desired properties of the foam or of the lightweight porous material via a programmable electric control.
- Method according to one of claims 1 to 4, characterised in that if the foaming device has a discontinuous consumption, the slurry is prepared according to the fill level of the intermediate store.
- Apparatus for carrying out the method according to one of claims 1 to 5, characterised in that the output (5) of a first injection pump (1) with an upstream liquid feed pump and an intake inlet (4) for additives is connected to the input (16) and the intake inlet (9) of a second injection pump (10) provided with an upstream gas supply device is connected to the output of an intermediate store (7).
- Apparatus according to claim 6, characterised in that the metering devices, flow meters, pumps, control valves or the like are at least in part remote-controllable and are connected to a programmable control unit.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19933245A DE19933245A1 (en) | 1999-07-15 | 1999-07-15 | Method and device for producing foams, in particular foamed porous substances |
| DE19933245 | 1999-07-15 | ||
| PCT/EP2000/006687 WO2001005494A1 (en) | 1999-07-15 | 2000-07-13 | Method and device for producing foams, especially foamed porous light-density materials |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1198287A1 EP1198287A1 (en) | 2002-04-24 |
| EP1198287B1 true EP1198287B1 (en) | 2003-02-19 |
Family
ID=7914924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00954492A Expired - Lifetime EP1198287B1 (en) | 1999-07-15 | 2000-07-13 | Method and device for producing foams, especially foamed porous light-density materials |
Country Status (13)
| Country | Link |
|---|---|
| EP (1) | EP1198287B1 (en) |
| JP (1) | JP2003504191A (en) |
| AT (1) | ATE232753T1 (en) |
| AU (1) | AU6693000A (en) |
| CA (1) | CA2379226A1 (en) |
| CZ (1) | CZ2002155A3 (en) |
| DE (2) | DE19933245A1 (en) |
| DK (1) | DK1198287T3 (en) |
| ES (1) | ES2193101T3 (en) |
| HU (1) | HUP0202633A2 (en) |
| PL (1) | PL353402A1 (en) |
| TR (1) | TR200200059T2 (en) |
| WO (1) | WO2001005494A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10110917C2 (en) * | 2001-03-07 | 2003-05-15 | Axel Kretzschmar | Method and device for producing a binder foam |
| JP2011125816A (en) * | 2009-12-18 | 2011-06-30 | Tosetsu:Kk | Gas-liquid mixture stirring device |
| CN102228812B (en) * | 2011-04-25 | 2013-04-17 | 青岛高远热能动力设备有限公司 | Multichannel steam-steam ejector |
| JP5749702B2 (en) * | 2012-11-21 | 2015-07-15 | 株式会社タカギ | Liquid dilution device |
| CN105233744A (en) * | 2015-10-29 | 2016-01-13 | 宝鸡航天动力泵业有限公司 | Blending device for high-pressure foams and mud |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3547409A (en) * | 1968-05-23 | 1970-12-15 | Jacuzzi Bros Inc | Assembly for producing detergent foam |
| BE790131A (en) * | 1971-10-14 | 1973-04-16 | Basf Ag | METHOD AND DEVICE FOR MIXING LIQUIDS |
| DE3040834A1 (en) * | 1979-11-15 | 1981-06-11 | Dietrich Dipl.-Phys. Dr. 5300 Bonn Bachner | Toxic gas discharged from nuclear or chemical plant - is enclosed in rigid plastics foam mixed as gas is released |
| US5556033A (en) * | 1989-05-10 | 1996-09-17 | New Waste Concepts, Inc. | Apparatus for forming a foamed outdoor protective cover layer |
| DE4118537C1 (en) * | 1991-06-06 | 1992-07-30 | Rume Maschinenbau Gmbh, 8500 Nuernberg, De |
-
1999
- 1999-07-15 DE DE19933245A patent/DE19933245A1/en not_active Withdrawn
-
2000
- 2000-07-13 WO PCT/EP2000/006687 patent/WO2001005494A1/en active IP Right Grant
- 2000-07-13 DE DE50001291T patent/DE50001291D1/en not_active Expired - Fee Related
- 2000-07-13 AT AT00954492T patent/ATE232753T1/en not_active IP Right Cessation
- 2000-07-13 TR TR2002/00059T patent/TR200200059T2/en unknown
- 2000-07-13 JP JP2001510573A patent/JP2003504191A/en active Pending
- 2000-07-13 PL PL00353402A patent/PL353402A1/en unknown
- 2000-07-13 AU AU66930/00A patent/AU6693000A/en not_active Abandoned
- 2000-07-13 EP EP00954492A patent/EP1198287B1/en not_active Expired - Lifetime
- 2000-07-13 CA CA002379226A patent/CA2379226A1/en not_active Abandoned
- 2000-07-13 HU HU0202633A patent/HUP0202633A2/en unknown
- 2000-07-13 ES ES00954492T patent/ES2193101T3/en not_active Expired - Lifetime
- 2000-07-13 CZ CZ2002155A patent/CZ2002155A3/en unknown
- 2000-07-13 DK DK00954492T patent/DK1198287T3/en active
Also Published As
| Publication number | Publication date |
|---|---|
| JP2003504191A (en) | 2003-02-04 |
| CZ2002155A3 (en) | 2002-10-16 |
| CA2379226A1 (en) | 2001-01-25 |
| AU6693000A (en) | 2001-02-05 |
| WO2001005494A1 (en) | 2001-01-25 |
| PL353402A1 (en) | 2003-11-17 |
| DK1198287T3 (en) | 2003-06-16 |
| ATE232753T1 (en) | 2003-03-15 |
| TR200200059T2 (en) | 2002-06-21 |
| ES2193101T3 (en) | 2003-11-01 |
| DE19933245A1 (en) | 2001-01-18 |
| EP1198287A1 (en) | 2002-04-24 |
| DE50001291D1 (en) | 2003-03-27 |
| HUP0202633A2 (en) | 2002-11-28 |
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