EP0517207B1 - Verfahren und Vorrichtung zur Herstellung von Bauschaum, insbesondere Zementschaum - Google Patents

Verfahren und Vorrichtung zur Herstellung von Bauschaum, insbesondere Zementschaum Download PDF

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Publication number
EP0517207B1
EP0517207B1 EP92109445A EP92109445A EP0517207B1 EP 0517207 B1 EP0517207 B1 EP 0517207B1 EP 92109445 A EP92109445 A EP 92109445A EP 92109445 A EP92109445 A EP 92109445A EP 0517207 B1 EP0517207 B1 EP 0517207B1
Authority
EP
European Patent Office
Prior art keywords
foam
foaming agent
compressed air
laitance
injected
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.)
Expired - Lifetime
Application number
EP92109445A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0517207A1 (de
Inventor
Dieter Meier
Heinz Ruppert
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.)
ZTI ZEMENTSCHAUM-TECHNIK INTERNATIONAL GmbH
Original Assignee
RUME Maschinenbau 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 RUME Maschinenbau GmbH filed Critical RUME Maschinenbau GmbH
Publication of EP0517207A1 publication Critical patent/EP0517207A1/de
Application granted granted Critical
Publication of EP0517207B1 publication Critical patent/EP0517207B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • 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 construction foam from air, water, foaming agent and an additive, in particular cement foam.
  • air, water and a foaming agent - usually via perforated disks connected in series - are used to produce a foam that is fed to a mixing device at the processing location, into which the prefabricated cement slurry is introduced via an additional line.
  • the device for producing the cement slurry and the foaming agent are thus on the ground floor, which makes it necessary to press the heavy cement slurry upwards using screw conveyors or the like.
  • Another difficulty of the previously used method is that by mixing the prefabricated foam with the cement, only so-called heavy foam with foam weights of 800 kg / m3 or more can be produced.
  • GB-A-2 118 451 describes a method in which a cement slurry is introduced into a pipeline by means of a slurry pump.
  • the pipeline are, cf. 1 and 2, each connected to a foam and a gas supply line.
  • the respective media are fed to the sludge via this.
  • the hinge-capable mixture is processed in the pipeline identified by reference number 10, which is not characterized in any way either in length, in diameter or in any other condition.
  • the mixture thus prepared is split in a branch (reference number 11 “piping means”) into two separate pipe halves 12, 13, in which the mixture is transported further.
  • each branch 12, 13 there is a "pressure control means" identified by the reference numerals 14 and 15, both of which end in a collecting chamber 17.
  • the actual foaming of the mixture takes place in this chamber, namely in that the two mixture streams which are transported in branches 12 and 13 are sprayed vertically onto one another under high pressure, for which purpose the "pressure control means” 14 and 15 are arranged diametrically.
  • the high-pressure spraying of the streams onto one another in the so-called "focal point" 16 results in the turbulent mixing of the two streams and thus the actual activation of the foaming process, so that the foam is formed exclusively in the "collection chamber" 17.
  • the invention is therefore based on the object of providing a method and a device which is suitable for carrying out the method and which makes it possible in a simpler manner Way to produce and process light foam.
  • the invention provides that cement slurry is injected under high pressure into a mixing chamber and mixed with a foaming agent and that the mixture is fed directly behind it to an expansion nozzle into which compressed air is blown in.
  • the cement foam is produced in a single operation, which, owing to its low density, can then be conveyed to higher floors solely by the high pressures of the injected additives in a hose connected to the expansion nozzle, without the need for a complex screw pump or the like.
  • the quasi one-step production of the cement foam according to the invention instead of the mixture of cement slurry with a previously produced foam also enables a much lower foam density of about 250 to 400 kg / m 3 to be achieved.
  • the invention provides a valve block with connections for the cement slurry, of the foam agent and the compressed air and an outgoing foam line, the outlet axis of the injection-mixing nozzle for the cement slurry-foam agent mixture being transverse, essentially perpendicular to the expansion nozzle aligned with the outlet axis of the compressed air injection nozzle.
  • the arrangement according to the invention makes it possible to achieve a valve block which can be built very small, in which the externally operable setting wheels of the injection nozzles, which are preferably designed as metering valves, for the cement slurry, the foam agent and the compressed air nevertheless protrude in various directions so that they can be operated easily, with a very particular advantage
  • Injection nozzles are to be arranged interchangeably in a block having the connecting bores to the outer connections and between different injection nozzles.
  • connection 2 for a hose for the injection of cement slurry and a connection 3 for a compressed air hose and finally a further connection 4 for the foaming agent, while at 5 a connection for the outgoing cement foam line is indicated.
  • the cement slurry sucked in via a pressure pump and introduced at about 28 bar via connection 2 is injected with the aid of an injection valve 6 with a setting wheel 16 a mixing chamber 7 is injected, into which the foam agent is also injected via a second injection valve 8 with setting wheel 9.
  • a transversely extending expansion nozzle 10 is arranged, the axis of which is flush with the outlet axis of a compressed air valve 11 with a setting wheel 12, so that the compressed air introduced via the connection 3 immediately after it emerges into the mixing chamber 7 with the cement slurry-foam agent mixture to mix, this mixture foaming directly in the expansion nozzle 10 to form a cement foam with a low foam weight due to the high pressure, so that no further pump or the like is required at all for the further transport of this finished cement foam.
  • the high pressure of approx.
  • 25 bar in the foam line for example a 3/4 "line, which can be connected to the foam outlet 5, enables this foam to be conveyed automatically even to higher floors, since the weight of the foam in a 10 or 15 m long lines is still so low that the high pressure in the expansion chamber is still sufficient for automatic delivery.
  • the various nozzles 6, 8, 11 and 10 are preferably screwable as replaceable parts 6a, 8a, 11a and 10a into corresponding holes in the base body 1, so that a very simple exchange in the event of damage or wear and tear during use is possible without any problems.
  • the invention is not restricted to the exemplary embodiment shown.
  • the arrangement could of course also be used of the nozzles in a different way. What is essential, however, is the quasi one-stage foaming while avoiding the previous two-stage process, in which a finished foam is only subsequently mixed with the additive.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Porous Artificial Stone Or Porous Ceramic Products (AREA)
EP92109445A 1991-06-06 1992-06-04 Verfahren und Vorrichtung zur Herstellung von Bauschaum, insbesondere Zementschaum Expired - Lifetime EP0517207B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4118537A DE4118537C1 (pl) 1991-06-06 1991-06-06
DE4118537 1991-06-06

Publications (2)

Publication Number Publication Date
EP0517207A1 EP0517207A1 (de) 1992-12-09
EP0517207B1 true EP0517207B1 (de) 1995-08-23

Family

ID=6433282

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92109445A Expired - Lifetime EP0517207B1 (de) 1991-06-06 1992-06-04 Verfahren und Vorrichtung zur Herstellung von Bauschaum, insbesondere Zementschaum

Country Status (7)

Country Link
US (1) US5393341A (pl)
EP (1) EP0517207B1 (pl)
AT (1) ATE126723T1 (pl)
DE (2) DE4118537C1 (pl)
DK (1) DK0517207T3 (pl)
ES (1) ES2075538T3 (pl)
GR (1) GR3017960T3 (pl)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10110917C2 (de) * 2001-03-07 2003-05-15 Axel Kretzschmar Verfahren und Vorrichtung zur Erzeugung eines Bindemittelschaumes
CN1922120B (zh) * 2004-02-24 2010-06-09 拉法基石膏公司 制造凝固多孔粘结物的方法和装置

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9209613U1 (de) * 1992-07-17 1992-09-17 RUME Maschinenbau GmbH, 8500 Nürnberg Schaumgerät zur Herstellung von Bauschaum
DE4408088A1 (de) * 1994-03-10 1995-11-09 Dennert Kg Veit Verfahren zur Herstellung einer porösen, mineralischen Leicht-Dämmplatte
DE4443594C2 (de) * 1994-12-07 2000-07-27 Bayosan Wachter Gmbh & Co Kg Verfahren zum Herstellen eines Mörtels in einer Spritzvorrichtung, Vorrichtung zum Durchführen des Verfahrens sowie Verwendungen des Mörtels
DE19537239C2 (de) * 1995-03-03 1997-11-06 Heidelberger Baustofftech Gmbh Vorrichtung und Verfahren zur Erzeugung eines geschäumten Bindemittels
DE19632666C1 (de) * 1996-08-14 1998-04-23 Ingenieurkontor Fuer Maschinen Verfahren und Vorrichtung zur Herstellung von Luftporenbeton
DE19933245A1 (de) * 1999-07-15 2001-01-18 Hendrik Vulturius Verfahren und Vorrichtung zur Herstellung von Schäumen, insbesondere aufgeschäumten Porenleichtstoffen
US20030212149A1 (en) * 2001-08-17 2003-11-13 Grundmann Steven R. Foaming apparatus and method
DE10351690B4 (de) * 2003-07-04 2005-11-17 F & B GmbH Feuerschutz & Brandbekämpfung Einrichtung zur Herstellung eines Bindemittelschaumes
US7332114B2 (en) 2005-02-04 2008-02-19 Lafarge Platres Process for manufacturing sound absorbing cement tile
US20080222121A1 (en) * 2006-06-02 2008-09-11 Wolfgang Wiessler System for Adaptively Querying a Data Storage Repository
FR2953216B1 (fr) * 2009-12-01 2012-01-06 C T D Pulverisation Materiau isolant a base de ciment et son procede de fabrication
US10189180B2 (en) * 2014-01-15 2019-01-29 United States Gypsum Company Foam injection system with variable port inserts for slurry mixing and dispensing apparatus
WO2017143384A1 (en) * 2016-02-23 2017-08-31 Edgar Donald Knott A method for the manufacture of foamed plaster
US11192072B2 (en) 2016-09-30 2021-12-07 Halliburton Energy Services, Inc. System and method of producing foamed cement in a laboratory environment
CN111888960B (zh) * 2020-07-29 2024-07-09 中石化四机石油机械有限公司 一种石油钻采固井作业的泡沫发生装置及其发泡方法
CN111773989A (zh) * 2020-07-29 2020-10-16 中石化四机石油机械有限公司 一种石油钻采固井作业的泡沫混浆设备
AT526383B1 (de) * 2022-08-08 2024-09-15 Ganzi Gerald Vorrichtung zum Herstellen von Schaumbeton und Fördern des Schaumbetons zu verschiedenen Gießorten einer Baustelle

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH248162A (fr) * 1943-09-10 1947-04-30 Marchal Louis Amedee Appareil agitateur-mélangeur pour la production d'écumes et produits cellulaires.
DE2545006A1 (de) * 1975-10-08 1977-04-14 Zellen Leicht Beton Gmbh & Co Verfahren zur herstellung von leichtbeton
FI64569C (fi) * 1977-04-04 1983-12-12 Dyno Industrier As Foerfarande foer kontinuerlig framstaellning av ett spraengaemne genom att sammanblanda minst tvao flytande komponenter oc anordning foer utfoerande av foerfarandet
GB2086748B (en) * 1980-10-11 1985-07-31 Domocon Sa Aerated concrete
DE3039510A1 (de) * 1980-10-20 1982-06-03 Hoechst Ag, 6000 Frankfurt Vorrichtung und verfahren zum dispergieren und loesen von polymerpulvern
FR2503617A1 (fr) * 1981-04-10 1982-10-15 Dion Biro Guy Procede d'obtention de mortier cellulaire
DE3132667A1 (de) * 1981-08-14 1983-02-24 Lehmann & Co GmbH, 2120 Lüneburg Verfahren und einrichtung zum erzeugen von poren- oder schaumbeton oder dergleichen
US4470727A (en) * 1982-04-15 1984-09-11 The Dow Chemical Company Apparatus and process for foamed cementing
DE3222033A1 (de) * 1982-06-11 1983-12-15 KBI Klöckner-Becorit Industrietechnik GmbH, 4224 Hünxe Verfahren und vorrichtung zur herstellung von porenmoertel
JPS6186472A (ja) * 1984-10-04 1986-05-01 日本シポレツクス工業株式会社 軽量気泡コンクリ−ト
JPS61239916A (ja) * 1985-04-16 1986-10-25 Mitsubishi Plastics Ind Ltd 発泡射出成形方法
ZA881468B (en) * 1987-03-06 1988-08-23 Anthes Industries Inc. Method and apparatus for the production of cellular concrete and foam concentrate used therein
GB2217221B (en) * 1988-04-20 1991-12-11 Gary Kenneth Busch Apparatus for preparing foamed concrete or other foamed products
US5098267A (en) * 1990-06-22 1992-03-24 Union Carbide Industrial Gases Technology Corporation Apparatus and method for producing and molding structural foam

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10110917C2 (de) * 2001-03-07 2003-05-15 Axel Kretzschmar Verfahren und Vorrichtung zur Erzeugung eines Bindemittelschaumes
CN1922120B (zh) * 2004-02-24 2010-06-09 拉法基石膏公司 制造凝固多孔粘结物的方法和装置

Also Published As

Publication number Publication date
DE59203343D1 (de) 1995-09-28
ATE126723T1 (de) 1995-09-15
US5393341A (en) 1995-02-28
GR3017960T3 (en) 1996-02-29
EP0517207A1 (de) 1992-12-09
ES2075538T3 (es) 1995-10-01
DK0517207T3 (da) 1995-11-27
DE4118537C1 (pl) 1992-07-30

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