EP2576037B1 - Dispositif de remalaxage - Google Patents

Dispositif de remalaxage Download PDF

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Publication number
EP2576037B1
EP2576037B1 EP11725329.4A EP11725329A EP2576037B1 EP 2576037 B1 EP2576037 B1 EP 2576037B1 EP 11725329 A EP11725329 A EP 11725329A EP 2576037 B1 EP2576037 B1 EP 2576037B1
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EP
European Patent Office
Prior art keywords
mixing
section
angle
mixing device
pipe section
Prior art date
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Application number
EP11725329.4A
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German (de)
English (en)
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EP2576037A1 (fr
Inventor
Johann Schuller
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
    • E04G21/04—Devices for both conveying and distributing
    • 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
    • B01F23/50—Mixing liquids with solids
    • B01F23/54—Mixing liquids with solids wetting solids
    • 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
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/433—Mixing tubes wherein the shape of the tube influences the mixing, e.g. mixing tubes with varying cross-section or provided with inwardly extending profiles
    • 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
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/433—Mixing tubes wherein the shape of the tube influences the mixing, e.g. mixing tubes with varying cross-section or provided with inwardly extending profiles
    • B01F25/4332—Mixers with a strong change of direction in the conduit for homogenizing the flow
    • 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
    • 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
    • B28C5/06—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 the mixing being effected by the action of a fluid
    • 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
    • B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
    • B28C5/0862—Adaptations of mixing containers therefor, e.g. use of material, coatings

Definitions

  • the invention relates to a post-mixing device for the post-mixing of shotcrete with water with a Wasserzumischteil downstream feeding pipe section, a laxative pipe section and arranged between the feeding and the laxative pipe section post-mixing chamber, which has in the flow direction two mutually under a deflection angle mixing sections with impact surfaces , wherein the flow direction first mixing portion relative to the feeding pipe section with respect to its rectilinear extension at an angle less than 90 ° is arranged.
  • Such a mixing device is in the EP 1 695 803 B1 reported as known.
  • the post-mixing device or the post-mixing tube has been proven especially when mixing dry mix with water. Namely, a major problem with the dry spray concrete method is to achieve a good mixing of the dry mix with water, achieving a good concrete quality and to produce as little dust as possible at work.
  • a Spritzbetondüse with post-mixing chamber This is effected by the described in the cited document using a Spritzbetondüse with post-mixing chamber.
  • This consists of two mutually arranged at an angle mixing sections and has baffles and reflective surfaces for the supplied mix, which is wetted before entering the post-mixing chamber in a tubular Wasserzumischteil with disposed therein water nozzles with water.
  • the impact surfaces have a conical, V-shaped or concave shape in cross-section, which concentrate the flowing mixture in the cross-sectional direction and substantially contribute to maintaining the flow dynamics.
  • Another post-mixing device of this kind is in the DE 20 2010 005 526 U1 shown.
  • the present invention has for its object to provide a post-mixing device of the type mentioned, with the optimized flow conditions are achieved in different compositions of the mix, with a good mixing remains guaranteed.
  • the laxative pipe section extends in a straight line extension of the downstream, second mixing section or with respect to the rectilinear one Extension is angled or angled at an angle which is less than the angle between the straight line extension of the second mixing section and the rectilinear extension of the feeding pipe section.
  • the post-mixing chamber is formed in such a way that the impact surfaces of the first mixing section in its longitudinal direction extending in the flow direction with respect to a rectilinear extension of the feeding pipe section at an angle of 10 ° to 80 ° are arranged and the impact surfaces of the second mixing section are arranged in their longitudinal direction extending in the flow direction with respect to a rectilinear extension of the first mixing section at an angle of 10 ° to 90 °.
  • the resistance to abrasion is increased by the fact that the impact surfaces of the post-mixing chamber over the entire surface or only part of surface with hard materials such.
  • hard materials such as ceramics, carbide, steel, Alulegleiteren, carbide coatings, enamel, glass or elastic materials such.
  • the entire post-mixing chamber consists of metal, Alulegleiteren, ceramic, plastic, rubber or similar material.
  • the thus formed walls of the post-mixing chamber can then with the said resistant Coatings are coated in particular of hard metal or ceramic on the most stressed areas such as impact surfaces and reflective surfaces and input and output areas.
  • the Wasserzumischteil is designed as Wasserzumischrohr with water nozzles and is arranged to extract the water nozzles and the post-mixing chamber from a receiving part with water connection pulled out.
  • the Nachmischhunt is made entirely of plastic or rubber, with certain areas are provided with inserts that improve the resistance to abrasion, the Wasserzumischteil with disposed therein water nozzles and a discharge pipe made of metal, Alulegleiteren, ceramic or plastic.
  • the post-mixing chamber is made in two parts of metal, plastic or rubber and certain areas are provided with inserts, wherein the Wasserzumischteil and the laxative pipe section made as a tubular sleeves with an outer bead in the manner are that when joining the two parts of the post-mixing chamber, the ends of the tube sleeves with the outer bead in corresponding formations of the metal, plastic or rubber parts can be inserted and assembled.
  • Fig. 1 shows, in the present mixing device a Wasserzumischteil in the form of a Wasserzumischrohres 5 with circumferentially arranged water nozzles 5.1 a mixing chamber 1 downstream with a inflow-side, first mixing section 1.2 and a downstream, second mixing section 1.3, at the output side an output-side pipe section 8.1 and a discharge pipe connected thereto 8.2 a pipe assembly 8 (see also Fig. 5 to 8 ) connect.
  • a Wasserzumischteil in the form of a Wasserzumischrohres 5 with circumferentially arranged water nozzles 5.1 a mixing chamber 1 downstream with a inflow-side, first mixing section 1.2 and a downstream, second mixing section 1.3, at the output side an output-side pipe section 8.1 and a discharge pipe connected thereto 8.2 a pipe assembly 8 (see also Fig. 5 to 8 ) connect.
  • the closer Wasserzumischrohres 5 and the mixing chamber 1 is supplementary to the above-mentioned EP 1 695 803 B1 Referenced
  • the water mixing tube 5 downstream first mixing section 1.2 is designed so that it is arranged in the flow direction at an angle of 10 ° to 80 ° (with respect to an imaginary extension of the Wasserzumischrohres 5 or a feeding pipe section 1.1), wherein impact surfaces 2 in the first Mixing section 1.2 form a concave rounded (in particular circular or oval), V-shaped or other concave cross-section.
  • impact surfaces 2 in the first Mixing section 1.2 form a concave rounded (in particular circular or oval), V-shaped or other concave cross-section.
  • the second mixing section 1.3 is also provided with impact surfaces 3 which form a concavely rounded, V-shaped or other concave cross-section and is arranged (in the flow direction) opposite (an imaginary extension of the first mixing section 1.2) at an angle of 10 ° to 90 ° , so that between the first mixing section 1.2 and second mixing section 1.3 a blunt or at most right angle is formed.
  • the impact surfaces 2 and 3 of the two mixing sections 1.2, 1.3 are designed wholly or partially straight or curved in the flow direction or longitudinal direction. From the second mixing section 1.3, the mix flows directly or via an intermediate section into the discharge pipe arrangement 8 with the discharging pipe section 8.1 and the discharge pipe 8.2 attached thereto, preferably removably attached.
  • Fig. 3 and 4 an interior view of the post-mixing chamber 1 and reflect the impact surfaces 2 and 3 of the first and second mixing section 1.2, 1.3 recognize. These opposite are present in the mixing sections 1.2 and 1.3 reflection surfaces for the mix, so that when flowing through the mixing chamber effective mixing of the mix with the water supplied via the water nozzles results.
  • Fig. 5 are a receiving part to the water nozzles 5.1, to which a Wasserzu Fightingschlauch is connected, and a hose connector for the dry mix feeding hose 7 and the discharge pipe 8.2 of the pipe assembly 8 shown, wherein the discharge pipe 8.2 is removably attached to the laxative pipe section by means of a clamp.
  • the pipe assembly 8 is connected to the discharging pipe section 8.1 in rectilinear extension of at least the output region of the optionally curved second mixing section, wherein the axis A1 of the discharging pipe section 8.1 and the pipe assembly 8 is shown in the flow direction. Further, an axis A2 in the direction of the extension of the input side of the post-mixing chamber 1 arranged feeding pipe section 1.1 (in this case offset relative to the extension parallel) entered.
  • the pipe assembly 8 with the discharging pipe section 8.1 and the discharge pipe 8.2 or only the discharge pipe 8.2 is arranged in the direction of the axis A1 or at an angle ⁇ in the region between the axis A1 and the axis A2, wherein the angle ⁇ preferably by a differential angle ⁇ of z. B. at least 10 ° or 20 ° (depending on the angle between the two mixing sections 1.2, 1.3 and between the first mixing section 1.2 and the feeding pipe section 1.1) is smaller, ie by the difference angle ⁇ is less than the total angle between the two axes A1 and A2.
  • the tube assembly 8 or only the discharge tube 8.2 can be connected pivotably and fixed at a certain angle by means of an adjustable pivot mechanism or with different manifold sections at the outlet of the second mixing section 1.3 or the discharging pipe section 8.1.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Nozzles (AREA)

Claims (9)

  1. Dispositif de remalaxage pour le remalaxage de béton projeté avec de l'eau, comprenant une section tubulaire (1.1) d'alimentation disposée en aval d'une partie de dosage d'eau, une section tubulaire de sortie (8.1) et une chambre de remalaxage (1) disposée entre la section tubulaire d'alimentation (1.1) et la section tubulaire de sortie (8.1), laquelle présente, dans la direction de l'écoulement, deux sections de mélange (1.2, 1.3) disposées suivant un angle de déviation l'une par rapport à l'autre avec des surfaces d'incidence (2 et 3), la première section de mélange (1.2) dans la direction de l'écoulement étant disposée par rapport à la section tubulaire d'alimentation (1.1), par rapport à son prolongement rectiligne, suivant un angle inférieur à 90°,
    caractérisé en ce que
    la section tubulaire de sortie (8.1) s'étend dans le prolongement rectiligne de la deuxième section de mélange (1.3) du côté de la sortie ou est coudée ou courbée par rapport au prolongement rectiligne suivant un angle (α) qui est inférieur à l'angle entre le prolongement rectiligne de la deuxième section de mélange (1.3) et le prolongement rectiligne de la section tubulaire d'alimentation (1.1).
  2. Dispositif de remalaxage selon la revendication 1,
    caractérisé en ce que
    la chambre de remalaxage (1) est réalisée de telle sorte que les surfaces d'incidence (2) de la première section de mélange (1.2) soient disposées dans leur étendue longitudinale s'étendant dans la direction de l'écoulement par rapport à un prolongement rectiligne de la section tubulaire d'alimentation (1.1) suivant un angle de 10° à 80° et les surfaces d'incidence (3) de la deuxième section de mélange (1.3) sont disposées dans leur étendue longitudinale s'étendant dans la direction de l'écoulement par rapport à un prolongement rectiligne de la première section de mélange (1.2) suivant un angle de 10° à 90°.
  3. Dispositif de remalaxage selon la revendication 1 ou 2,
    caractérisé en ce que
    les surfaces d'incidence (2 et 3) de la chambre de remalaxage (1) sont recouvertes sur toute leur surface ou seulement sur une partie de leur surface avec des matériaux durs tels que par exemple de la céramique, un métal dur, de l'acier, des alliages d'aluminium, des revêtements de carbure, de l'émail, du verre ou des matériaux élastiques comme par exemple du caoutchouc ou du plastique.
  4. Dispositif de remalaxage selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    l'ensemble de la chambre de remalaxage (1) se compose de métal, d'alliages d'aluminium, de céramique, de plastique, de caoutchouc ou d'un matériau similaire.
  5. Dispositif de remalaxage selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    la partie de dosage d'eau est réalisée sous forme de tube de dosage d'eau (5) avec des buses à eau (5.1) et, pour le nettoyage des buses à eau et de la chambre de remalaxage (1), est disposée de manière à pouvoir être ressortie d'une partie de logement (6.1) avec un raccord d'eau.
  6. Dispositif de remalaxage selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    la chambre de remalaxage (1) est complètement fabriquée en plastique ou en caoutchouc, des régions déterminées étant pourvues de pièces d'insertion qui améliorent la résistance à l'abrasion, la partie de dosage d'eau avec des buses à eau réalisées dans celle-ci et le tube de sortie (8.1) se composant de métal, d'alliages d'aluminium, de céramique ou de plastique.
  7. Dispositif de remalaxage selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    la chambre de remalaxage (1) est fabriquée en deux parties en métal, en plastique ou en caoutchouc et des régions déterminées sont pourvues de pièces d'insertion, la partie de dosage d'eau et la section tubulaire de sortie étant fabriquées sous forme de douilles tubulaires avec un bourrelet extérieur de telle sorte que lors de l'assemblage des deux parties de la chambre de remalaxage (1), les extrémités des douilles tubulaires puissent être introduites avec le bourrelet extérieur dans des formations correspondantes des pièces en métal, plastique ou caoutchouc et être assemblées.
  8. Dispositif de remalaxage selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    les surfaces d'incidence (2, 3) d'au moins la première ou la deuxième section de mélange (1.2, 1.3) possèdent un contour de section transversale concave arrondie, en forme de U, de forme trapézoïdale ou en forme de V.
  9. Dispositif de remalaxage selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    l'agencement tubulaire (8) est raccordé de manière à pouvoir pivoter par rapport à la deuxième section de mélange (1.3) suivant l'angle (α) et peut être fixé suivant un angle ajusté.
EP11725329.4A 2010-05-31 2011-05-31 Dispositif de remalaxage Active EP2576037B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202010005526U DE202010005526U1 (de) 2010-05-31 2010-05-31 Nachmischkammer
PCT/EP2011/002687 WO2011151055A1 (fr) 2010-05-31 2011-05-31 Dispositif de remalaxage

Publications (2)

Publication Number Publication Date
EP2576037A1 EP2576037A1 (fr) 2013-04-10
EP2576037B1 true EP2576037B1 (fr) 2014-08-13

Family

ID=42372167

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11725329.4A Active EP2576037B1 (fr) 2010-05-31 2011-05-31 Dispositif de remalaxage

Country Status (3)

Country Link
EP (1) EP2576037B1 (fr)
DE (1) DE202010005526U1 (fr)
WO (1) WO2011151055A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202010005526U1 (de) 2010-05-31 2010-07-29 Schuller, Hans Nachmischkammer

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20106434U1 (de) * 2001-04-12 2001-10-25 Schuller Hans Umlenkkammermischrohr
DE202004000656U1 (de) 2003-01-23 2004-04-01 Schuller, Hans Nachmischrohr
EP1695803B1 (fr) * 2005-01-07 2008-06-04 Hans Schuller Tube de mélange
DE202007008865U1 (de) * 2006-06-22 2007-10-25 Opitz, Günther Nachmischvorrichtung für einen Spritzbeton-Strom
DE202010005526U1 (de) 2010-05-31 2010-07-29 Schuller, Hans Nachmischkammer

Also Published As

Publication number Publication date
EP2576037A1 (fr) 2013-04-10
DE202010005526U1 (de) 2010-07-29
WO2011151055A1 (fr) 2011-12-08

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