DE102008003738A1 - Method and associated apparatus for pressureless or near-pressureless introduction of foam in a pressurized stream of material - Google Patents
Method and associated apparatus for pressureless or near-pressureless introduction of foam in a pressurized stream of material Download PDFInfo
- Publication number
- DE102008003738A1 DE102008003738A1 DE102008003738A DE102008003738A DE102008003738A1 DE 102008003738 A1 DE102008003738 A1 DE 102008003738A1 DE 102008003738 A DE102008003738 A DE 102008003738A DE 102008003738 A DE102008003738 A DE 102008003738A DE 102008003738 A1 DE102008003738 A1 DE 102008003738A1
- Authority
- DE
- Germany
- Prior art keywords
- flow
- pipe
- cross
- constriction
- downstream
- 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.)
- Ceased
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/02—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions without using driven mechanical means effecting the mixing
- B28C5/026—Mixing guns or nozzles; Injector mixers
-
- 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
- B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
-
- 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
- B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
- B01F25/3123—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof with two or more Venturi elements
-
- 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
- B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
- B01F25/3124—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof characterised by the place of introduction of the main flow
- B01F25/31241—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof characterised by the place of introduction of the main flow the main flow being injected in the circumferential area of the venturi, creating an aspiration in the central part of the conduit
-
- 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
- B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
- B01F25/3124—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof characterised by the place of introduction of the main flow
- B01F25/31242—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof characterised by the place of introduction of the main flow the main flow being injected in the central area of the venturi, creating an aspiration in the circumferential part of the conduit
-
- 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
- B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
- B01F25/3125—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof characteristics of the Venturi parts
- B01F25/31251—Throats
- B01F25/312512—Profiled, grooved, ribbed throat, or being provided with baffles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/38—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions wherein the mixing is effected both by the action of a fluid and by directly-acting driven mechanical means, e.g. stirring means ; Producing cellular concrete
- B28C5/381—Producing cellular concrete
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/10—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by using foaming agents or by using mechanical means, e.g. adding preformed foam
- C04B38/106—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by using foaming agents or by using mechanical means, e.g. adding preformed foam by adding preformed foams
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Nozzles (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
Verfahren und zugehörige Vorrichtung zum drucklosen oder nahezu drucklosen Einbringen von Schaum in einen unter Druck stehenden Materialstrom in einem vorgegebenen Mischungsverhältnis.Method and associated apparatus for pressureless or almost pressureless introduction of foam in a pressurized stream of material in a predetermined mixing ratio.
Description
Stand der TechnikState of the art
Im Zusammenhang mit der Herstellung von Schaumbeton besteht die Notwendigkeit Schaum in definierter Menge und Volumen in einen unter hohem Druck (6 bis 12 bar) stehenden Materialstrom aus einem Gemisch von Zement, Zuschlagsstoffen und Wasser auf dem Weg zwischen einer Förderpumpe und einem sich an diese anschließenden Statikmischer einzutragen.in the In connection with the production of foam concrete is necessary Foam in a defined amount and volume in a high pressure (6 to 12 bar) standing stream of a mixture of cement, Additives and water on the way between a feed pump and one to this subsequent Enter static mixer.
Der bis zu 500 oder mehr Volumenprozent des Materialstroms betragende Schaumanteil muss dabei mit Überdruck gegen den in dem Materialstrom herrschenden Druck eingepresst werden. Hierzu ist nicht nur ein erheblicher Energieaufwand zur Erzeugung des Schaumdrucks erforderlich, der größer ist als der Druck in dem Materialstrom, sondern auch das Mischungsverhältnis zwischen Grundmaterial und Schaum ändert sich mit den in den Materialien herrschenden unterschiedlich hohen Drücken. Zur Konstanthaltung des eingestellten Mischungsverhältnisses ist daher eine ständige Kontrolle der in den einzelnen Komponenten herrschenden Drücke erforderlich.Of the up to 500 or more volume percent of the material stream Foam content must be at overpressure be pressed against the prevailing pressure in the material flow. Not only is there a considerable amount of energy required for production the foam pressure is required to be greater than the pressure in the Material flow, but also the mixing ratio between base material and Foam changes different levels of material prevailing in the materials To press. For keeping constant the set mixing ratio is therefore a permanent one Control of the pressure prevailing in the individual components required.
Aufgabe vorliegender Erfindung ist es, ein Verfahren mit zugehöriger Vorrichtung vorzuschlagen, mit deren Hilfe Schaum drucklos oder nahezu drucklos einem unter Druck stehenden Materialstrom zugeführt werden kann, derart, dass das vorgegebene Mischungsverhältnis der beiden Materialkomponenten konstant oder nahezu konstant bleibt.task The present invention is a method with associated device to propose, with the help of foam, depressurized or almost depressurized can be supplied to a pressurized stream of material, such that the predetermined mixing ratio the two material components remains constant or nearly constant.
Die Vorrichtung zum Eintragen einer entsprechenden Schaummenge in einen unter Druck stehenden Materialstrom soll dabei so ausgebildet sein, dass sie in den eine Materialförderpumpe und einen Statikmischer verbindenden Förderschlauch in einfacher Weise zwischengeschaltet werden kann.The Device for introducing a corresponding amount of foam in one pressurized material flow should be designed so that they are in the one material pump and a static mixer connecting conveyor hose in a simple manner can be interposed.
Die Aufgabe wird gemäß kennzeichnendem Teil von Anspruch 1 und 3 gelöst.The Task becomes according to the characterizing part from claim 1 and 3 solved.
Die Zumischvorrichtung nach vorliegender Erfindung besteht aus einem, den Materialstrom führenden Rohr, in dem eine Querschnittsverengung ausgebildet ist, derart, dass sich an dieser Stelle die Fließgeschwindigkeit des Materialstroms erhöht, in folge dessen stromunterseitig der Querschnittsverengung ein Unterdruckgebiet in dem Materialstrom entsteht, in das der Schaum drucklos oder mit geringem Überdruck in den Materialstrom eingetragen werden kann.The Admixing device according to the present invention consists of a, leading the material flow Tube in which a cross-sectional constriction is formed, in such a way that at this point the flow rate of the material flow elevated, in consequence of which downstream of the cross-sectional constriction a negative pressure area arises in the material flow, in which the foam is depressurized or with low overpressure can be entered in the material flow.
Zeichnungendrawings
Einzelheiten der Erfindung werden nachstehend in Verbindung mit den zugehörigen Zeichnungen näher beschrieben.details The invention will be described below in conjunction with the accompanying drawings described in more detail.
Von den Zeichnungen zeigt:From the drawings shows:
Die
in
Der
erste Rohrabschnitt
Im
Bereich des konischen Rohrabschnitts
Der
Verdrängungskörper
Die
Menge des Schaumeintrags erfolgt dabei analog zu der Durchflussmenge
des Materialstroms
In
Der
Einsatz
Durch
Verwendung geometrisch unterschiedlich ausgestalteter Einsatzstücke
Enthält der Materialstrom
abrasive Substanzen, die den Einsatzkörper
Die vorstehend beschriebenen Mischrohre eignen sich nicht nur zur Herstellung von Schaumbeton, sondern sind in gleicher Weise zur Mischung von Materialien gleicher oder unterschiedlicher Dichte in flüssiger, fließfähiger fester Form und/oder Gasform in unterschiedlicher Zusammensetzung geeignet.The Mixing tubes described above are not only suitable for the production of foamed concrete, but are the same way to mix materials same or different density in liquid, flowable solid Shape and / or gas form suitable in different compositions.
Durch Hintereinanderschaltung von zwei oder mehreren Mischrohren – auch unterschiedlicher Ausführungsform – können in einem Arbeitsgang nacheinander unterschiedlichste Materialien in einen unter Druck stehenden Materialstrom eingetragen werden.By Series connection of two or more mixing tubes - also different embodiment - can in one operation successively different materials in be entered a pressurized stream of material.
Auf diese Weise lassen sich auch Reaktionsmaterialien unmittelbar vor ihrem Einsatz miteinander vermischen und danach gegebenenfalls in einer weiteren Zumischvorrichtung mit Zuschlagsstoffen anreichern.On In this way, reaction materials can also be used immediately their use mixed together and then optionally in accumulate a further admixing device with additives.
Claims (13)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008003738A DE102008003738A1 (en) | 2008-01-10 | 2008-01-10 | Method and associated apparatus for pressureless or near-pressureless introduction of foam in a pressurized stream of material |
PCT/DE2009/000020 WO2009086822A2 (en) | 2008-01-10 | 2009-01-09 | Method and associated apparatus for pressureless or nearly pressureless incorporation of foam into a pressurized material stream |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008003738A DE102008003738A1 (en) | 2008-01-10 | 2008-01-10 | Method and associated apparatus for pressureless or near-pressureless introduction of foam in a pressurized stream of material |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102008003738A1 true DE102008003738A1 (en) | 2009-07-30 |
Family
ID=40794187
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102008003738A Ceased DE102008003738A1 (en) | 2008-01-10 | 2008-01-10 | Method and associated apparatus for pressureless or near-pressureless introduction of foam in a pressurized stream of material |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE102008003738A1 (en) |
WO (1) | WO2009086822A2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103111213A (en) * | 2013-02-04 | 2013-05-22 | 西安交通大学 | Venturi mixer with special inserting tube |
WO2015179153A1 (en) * | 2014-05-19 | 2015-11-26 | United States Gypsum Company | Slurry mixer gate with enhanced flow and foaming geometry |
US9694332B2 (en) | 2014-10-30 | 2017-07-04 | United States Gypsum Company | Slurry mixer discharge gate adapter with transitioning cross-sectional geometry |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102182492B (en) * | 2011-04-11 | 2014-03-05 | 西安西科煤矿安全通风防灭火研究所有限公司 | Underground dust-removing foam generator and foam dust-removing equipment |
CN103028333B (en) * | 2012-12-04 | 2014-10-15 | 北京中卓时代消防装备科技有限公司 | Foaming device for compressed air A-type foams |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3408007C2 (en) * | 1984-03-03 | 1987-02-05 | Wilhelm Müller, Maschinenfabrik, 4710 Lüdinghausen | Spray nozzle for foam concrete, foam mortar or the like and method for spraying foam concrete |
DE9011622U1 (en) * | 1989-08-11 | 1990-12-06 | Bergwerksverband Gmbh, 4300 Essen | Device for wetting fine-grained material, particularly to be used as shotcrete or mortar |
DE9417705U1 (en) * | 1994-11-04 | 1995-01-05 | DMT-Gesellschaft für Forschung und Prüfung mbH, 45307 Essen | Device for wetting fine-grained material |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE713473C (en) * | 1935-10-17 | 1941-11-07 | Raymond Felix Simonin | Device for the production and sprinkling of mixtures, in particular bituminous mixtures for road construction |
DE2544559A1 (en) * | 1975-10-04 | 1977-04-07 | Bayer Ag | METHOD AND APPARATUS FOR PREPARING A REACTION MIXTURE FOR THE PRODUCTION OF FOAM |
DE3419153A1 (en) * | 1984-05-23 | 1985-11-28 | Hosch-Fördertechnik GmbH, 4350 Recklinghausen | Apparatus for introducing gas into a liquid |
DE4202972A1 (en) * | 1992-02-03 | 1993-08-05 | Bayer Ag | METHOD FOR THE CONTINUOUS PRODUCTION OF POLYURETHANE AND POLYURETHANE UREA PRE-POLYMERS |
WO2004005691A1 (en) * | 2002-07-03 | 2004-01-15 | Peter Holmes Ellmers | Fluid mixing venturi |
-
2008
- 2008-01-10 DE DE102008003738A patent/DE102008003738A1/en not_active Ceased
-
2009
- 2009-01-09 WO PCT/DE2009/000020 patent/WO2009086822A2/en active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3408007C2 (en) * | 1984-03-03 | 1987-02-05 | Wilhelm Müller, Maschinenfabrik, 4710 Lüdinghausen | Spray nozzle for foam concrete, foam mortar or the like and method for spraying foam concrete |
DE9011622U1 (en) * | 1989-08-11 | 1990-12-06 | Bergwerksverband Gmbh, 4300 Essen | Device for wetting fine-grained material, particularly to be used as shotcrete or mortar |
DE9417705U1 (en) * | 1994-11-04 | 1995-01-05 | DMT-Gesellschaft für Forschung und Prüfung mbH, 45307 Essen | Device for wetting fine-grained material |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103111213A (en) * | 2013-02-04 | 2013-05-22 | 西安交通大学 | Venturi mixer with special inserting tube |
CN103111213B (en) * | 2013-02-04 | 2015-10-21 | 西安交通大学 | A kind of venturi mixer containing special Inserting Tube |
WO2015179153A1 (en) * | 2014-05-19 | 2015-11-26 | United States Gypsum Company | Slurry mixer gate with enhanced flow and foaming geometry |
CN106457608A (en) * | 2014-05-19 | 2017-02-22 | 美国石膏公司 | Slurry mixer gate with enhanced flow and foaming geometry |
US10011045B2 (en) | 2014-05-19 | 2018-07-03 | United States Gypsum Company | Slurry mixer gate with enhanced flow and foaming geometry |
CN106457608B (en) * | 2014-05-19 | 2019-05-21 | 美国石膏公司 | Slurry mixer gate with enhancing flowing and foaming geometry |
RU2695733C2 (en) * | 2014-05-19 | 2019-07-25 | Юнайтед Стейтс Джипсум Компани | Slurry mixer sluice with improved flow geometry and foaming |
US9694332B2 (en) | 2014-10-30 | 2017-07-04 | United States Gypsum Company | Slurry mixer discharge gate adapter with transitioning cross-sectional geometry |
Also Published As
Publication number | Publication date |
---|---|
WO2009086822A3 (en) | 2010-01-07 |
WO2009086822A2 (en) | 2009-07-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
OP8 | Request for examination as to paragraph 44 patent law | ||
R002 | Refusal decision in examination/registration proceedings | ||
R003 | Refusal decision now final |
Effective date: 20121127 |