EP0873793A2 - Buse avec peu de rebond pour béton projetable - Google Patents

Buse avec peu de rebond pour béton projetable Download PDF

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Publication number
EP0873793A2
EP0873793A2 EP98890094A EP98890094A EP0873793A2 EP 0873793 A2 EP0873793 A2 EP 0873793A2 EP 98890094 A EP98890094 A EP 98890094A EP 98890094 A EP98890094 A EP 98890094A EP 0873793 A2 EP0873793 A2 EP 0873793A2
Authority
EP
European Patent Office
Prior art keywords
nozzle
shotcrete
impact bodies
nozzles
shaped
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.)
Withdrawn
Application number
EP98890094A
Other languages
German (de)
English (en)
Other versions
EP0873793A3 (fr
Inventor
Rainer Kurbos
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0873793A2 publication Critical patent/EP0873793A2/fr
Publication of EP0873793A3 publication Critical patent/EP0873793A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
    • B05B7/1481—Spray pistols or apparatus for discharging particulate material

Definitions

  • the invention relates to the building industry. According to the state of the art Shotcrete is made by wet or in a simple or ring chamber nozzle humidified material through a conical acceleration part with high Speed is ejected (see DE 2 316 464). The impact on a solid Obstacle (for example the inner wall of the tunnel) provides the necessary compaction however, there is high wear, dust and rebound of the used concrete material.
  • a solid Obstacle for example the inner wall of the tunnel
  • the invention sets itself the goal of wear, dust generation and above all the Avoid rebound by designing the flow conditions in the nozzle, and Water and compressed air can be added at points where the task requires it.
  • the compression should take place as far as possible in the nozzle, which also recoil to the nozzle guide is reduced, resulting in higher ejection performance enables.
  • the invention consists of a tube or any shape Hollow body, characterized in that the cross section and shape are targeted be changed, for example by internals, such as impact bodies, extensions and constrictions of any shape as well as nozzles through which solid, liquid and gaseous reaction components and transport media fed to the process can be.
  • a coupling (2) is attached to the delivery pipe or delivery hose (1)
  • External impact bodies (4) and widenings (5) can be shaped arbitrarily, that is, both embrace and penetrate the nozzle as well as in segments inclined to the nozzle axis, whereby also a spiral guidance of the material flow with cyclone effect can be brought about.
  • the rotation results in intensive mixing, also through Dead water areas on the impact bodies, the internal impact bodies also serving as Mixer tube with water addition functions (water and air) can be formed.
  • the compressed air nozzles (9) arranged in the course of the nozzle body allow the Material flow can be accelerated and set in rotation.
  • nozzles can be ring-shaped or spiral-shaped as well as individually, also with a tendency to Nozzle axis are arranged, mainly to brake the material flow.
  • An advantage of the invention is the wide variety of these internals, depending according to whether more the effect of mixing or more the effect of compression and rebound reduction is desired. Quite similar to any wing Buoyancy and drag generated and yet by varying the profile and the Geometry of different flight characteristics can also be created here multiple possibilities of designing and optimizing the Flow conditions with the same basic effect of the characteristics (3) to (9) and their hydraulic interaction.

Landscapes

  • Nozzles (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Lining And Supports For Tunnels (AREA)
EP98890094A 1997-04-14 1998-04-06 Buse avec peu de rebond pour béton projetable Withdrawn EP0873793A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT63297A AT405507B (de) 1997-04-14 1997-04-14 Spritzbetondüse für das trocken- oder nassspritzverfahren
AT632/97 1997-04-14

Publications (2)

Publication Number Publication Date
EP0873793A2 true EP0873793A2 (fr) 1998-10-28
EP0873793A3 EP0873793A3 (fr) 1999-04-21

Family

ID=3495734

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98890094A Withdrawn EP0873793A3 (fr) 1997-04-14 1998-04-06 Buse avec peu de rebond pour béton projetable

Country Status (2)

Country Link
EP (1) EP0873793A3 (fr)
AT (1) AT405507B (fr)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE445168C (de) * 1924-08-19 1927-06-04 Andreas Doll Spritzorrichtung zum Auftragen von Gipsputz auf Decken und Waende
US2021092A (en) * 1931-02-09 1935-11-12 Teliet Jean Antoine Marcel Improved method and means for incorporating a fluid to a stream of a fluid or of a pulverulent solid
US2075867A (en) * 1935-01-16 1937-04-06 Sampel Henri Cement gun nozzle
DE2316464A1 (de) * 1973-04-03 1974-10-10 Bergwerksverband Gmbh Ringkammerduese zum foerdern von schuettguetern nach dem pneumatischen duennstromprinzip
DE2556797C3 (de) * 1975-12-17 1979-11-08 Kurt 5620 Velbert Wolf Spritzmaschine für pulveiförmige Massen
SE411724B (sv) * 1976-10-26 1980-02-04 Sandell Bertil Sett och anordning for att en luftstrom tillfora material till ett munstycke
DD250913A1 (de) * 1986-07-08 1987-10-28 Dresden Baumechanisierung Duese zum spritzen von nassbeton
DE4002760A1 (de) * 1990-01-12 1991-07-18 Schwing Gmbh F Betonpumpe fuer das nassspritzverfahren
DE29612769U1 (de) * 1996-07-26 1996-11-07 DMT-Gesellschaft für Forschung und Prüfung mbH, 45307 Essen Einrichtung zur Benetzung von feinkörnigem Material

Also Published As

Publication number Publication date
ATA63297A (de) 1999-01-15
EP0873793A3 (fr) 1999-04-21
AT405507B (de) 1999-09-27

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