EP0738676A1 - Device for adding air, liquids or powdery solid matters into shotcrete pipes - Google Patents

Device for adding air, liquids or powdery solid matters into shotcrete pipes Download PDF

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Publication number
EP0738676A1
EP0738676A1 EP96101554A EP96101554A EP0738676A1 EP 0738676 A1 EP0738676 A1 EP 0738676A1 EP 96101554 A EP96101554 A EP 96101554A EP 96101554 A EP96101554 A EP 96101554A EP 0738676 A1 EP0738676 A1 EP 0738676A1
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EP
European Patent Office
Prior art keywords
annular chamber
liquids
annular
chamber
inlet channel
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Withdrawn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
EP96101554A
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German (de)
French (fr)
Inventor
Ernst Egli
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.)
Sika Equipment AG
Original Assignee
Aliva AG
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 Aliva AG filed Critical Aliva AG
Publication of EP0738676A1 publication Critical patent/EP0738676A1/en
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F21/00—Implements for finishing work on buildings
    • E04F21/02—Implements for finishing work on buildings for applying plasticised masses to surfaces, e.g. plastering walls
    • E04F21/06—Implements for applying plaster, insulating material, or the like
    • E04F21/08—Mechanical implements
    • E04F21/12—Mechanical implements acting by gas pressure, e.g. steam pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B5/00—Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in or on conveyors irrespective of the manner of shaping
    • B28B5/02—Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in or on conveyors irrespective of the manner of shaping on conveyors of the endless-belt or chain type
    • B28B5/021—Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in or on conveyors irrespective of the manner of shaping on conveyors of the endless-belt or chain type the shaped articles being of definite length
    • 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
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/28—Mixing cement, mortar, clay, plaster or concrete ingredients

Definitions

  • the present invention relates to a device for adding air, in particular conveying air, powdery solids, liquids or their mixtures into the conveying stream of shotcrete lines at predetermined addition points, with an annular insert part which can be inserted into the conveying line, with an inlet channel opening into an annular chamber of the insert part and several the annular chamber towards the flow flow outlet channels.
  • the ring chamber acts as a swirl or circulation chamber regardless of the material supplied, which ensures the desired regular distribution of the material across all the outlet channels leading to the internal bore and thus to the flow rate of the shotcrete line. Since there is no actual congestion, the material circulating in the annular chamber also prevents the inlet openings of the distribution channels from becoming blocked.
  • the material to be added is fed uniformly into the flow.
  • Devices according to the invention can be installed at all or selected addition points in a shotcrete line (for example for all materials to be added separately or only for powdered addition materials).
  • FIG. 3 shows an addition device 1 according to the invention, which is used, for example, to add a powdery material.
  • the device 1 is installed in a shotcrete line. Compressed air and possibly a liquid (for example water) are added in this line on the right-hand side and the delivery flow is conveyed via the pump hose 2 to the left to a spray gun 3 and discharged. Shortly before the gun 3, a desired powder is added via a further addition device 1.
  • the addition device 1 is designed as an insert and, in addition to connecting pipe pieces 4, 5, has an annular base body 6.
  • the pipe sections 4, 5 are flanged to the base body 6.
  • a circumferential annular chamber 7 Arranged in the base body 6 is a circumferential annular chamber 7, from which, viewed in the direction of conveyance of the flow of flow, discharge obliquely into the central inner bore 8 of the base body 6 leading outlet channels 9 which are distributed uniformly over the circumference.
  • An inlet channel 10 for the material to be added opens tangentially into the annular chamber 7. Thanks to this constructive measure, the annular chamber 7 acts as a swirl or circulation chamber, the medium (air, powder, liquid or mixtures thereof) that circulates therein regularly and absolutely regularly on all outlet channels 9 is distributed. As a result, the medium is added evenly to all outlet channels 9 without risk of clogging and thus evenly into the delivery flow in the inner bore 8.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Nozzles (AREA)

Abstract

The spraying device has an annular insertion component in the supply line. An inlet channel (10) comes out into an annular chamber (7) in this component. There are several outlet channels (9) from the annular chamber to the supply flow. The inlet channel is tangential, so that the annular chamber becomes a turbulence or circulation chamber. The outlet channels are spaced uniformly round the annular chamber and lead to the internal boring (8) of the insertion component. The input apertures of the dividing channels are close to the bottom of the annular chamber. These channels are angled inwards and come out in the internal boring of the insertion part.

Description

Die vorliegende Erfindung betrifft eine Vorrichtung zum Beigeben von Luft, insbesondere Förderluft, pulverförmigen Feststoffen, Flüssigkeiten oder deren Gemischen in den Förderstrom von Spritzbetonleitungen an vorbestimmten Beigabestellen, mit einem in die Förderleitung einsetzbaren ringförmigen Einsatzteil mit einem in eine Ringkammer des Einsatzteils mündenden Einlasskanal und mehreren aus der Ringkammer zum Förderstrom gerichteten Auslasskanälen.The present invention relates to a device for adding air, in particular conveying air, powdery solids, liquids or their mixtures into the conveying stream of shotcrete lines at predetermined addition points, with an annular insert part which can be inserted into the conveying line, with an inlet channel opening into an annular chamber of the insert part and several the annular chamber towards the flow flow outlet channels.

Vorrichtungen mit Einsatzteilen der vorstehend beschriebenen Art sind bekannt und bei Spritzbetonauftragseinrichtungen in Betrieb. Dabei wird das dem Förderstrom beizugebende Material aus dem ringförmigen Einsatzteil durch einen oder mehrere Auslasskanäle bzw. Düsen aus der Ringkammer radial nach innen geführt.Devices with insert parts of the type described above are known and in operation in shotcrete application devices. In this case, the material to be added to the conveying flow is guided radially inward out of the annular chamber through one or more outlet channels or nozzles.

Es hat sich allerdings gezeigt, dass diese Vorrichtungen mit dem Nachteil behaftet sind, dass die Düsenöffnungen durch das beizugebende Material (Pulver, Pulver-/Flüssigkeitsgemisch) oder durch den eigentlichen Förderstrom verschmutzt werden und damit die Menge und Verteilung des zugegebenen Materials unregelmässig wird. Die unregelmässige Verteilung wird auch bei reinen Flüssigkeitszugaben beobachtet.However, it has been shown that these devices have the disadvantage that the nozzle openings are contaminated by the material to be added (powder, powder / liquid mixture) or by the actual conveying flow, and the quantity and distribution of the material added is therefore irregular. The irregular distribution is also observed with pure liquid additions.

Für die reine Flüssigkeitszugabe wurde eine diesen Nachteil behebende Vorrichtung entwickelt, mit welcher das Material fächerartig an einer Prallplatte verteilt abgegeben wird. Diese von der Patentinhaberin patentierte Lösung (s. CH-PS Nr. Anm. Nr. 1542/94) eignet sich jedoch nur für reine Flüssigkeitszugaben.For the pure addition of liquid, a device to overcome this disadvantage has been developed, with which the material is distributed like a fan on a baffle plate. This solution, patented by the patent owner (see CH-PS No. Note No. 1542/94), is only suitable for pure liquid additions.

Aufgabe der vorliegenden Erfindung war es, eine Beigabevorrichtung für flüssige und pulverförmige Stoffe zu schaffen, welche bei geringstem Verstopfungsrisiko eine optimal regelmässige Verteilung der beizugebenden Stoffe über alle Auslasskanäle gewährleistet. Sie soll sich auch zur Beigabe von Förderluft (Druckluft) eignen.It was an object of the present invention to provide an addition device for liquid and powdery substances which, with the lowest risk of clogging, ensures an optimally regular distribution of the substances to be added over all outlet channels. It should also be suitable for adding conveying air (compressed air).

Diese Aufgabe wird bei einer Vorrichtung der eingangs definierten Art erfindungsgemäss durch das Merkmal gemäss dem kennzeichnenden Teil von Anspruch 1 gelöst.This object is achieved according to the invention in a device of the type defined in the introduction by the feature according to the characterizing part of claim 1.

Besondere Ausführungsformen der erfindungsgemässen Vorrichtung sind in den abhängigen Ansprüchen definiert.Particular embodiments of the device according to the invention are defined in the dependent claims.

Dank dem tangential in die Ringkammer führenden Einlasskanal wirkt die Ringkammer unabhängig vom zugeführten Material als Wirbel- oder Zirkulationskammer, was die angestrebte regelmässige Verteilung des Materials über alle zur Innenbohrung und damit zu den zum Förderstrom der Spritzbetonleitung führenden Auslasskanäle gewährleistet. Da kein eigentlicher Stau erfolgt, wird durch das in der Ringkammer zirkulierende Material auch einem Verstopfen der Eingangsöffnungen der Verteilkanäle begegnet.Thanks to the inlet channel leading tangentially into the ring chamber, the ring chamber acts as a swirl or circulation chamber regardless of the material supplied, which ensures the desired regular distribution of the material across all the outlet channels leading to the internal bore and thus to the flow rate of the shotcrete line. Since there is no actual congestion, the material circulating in the annular chamber also prevents the inlet openings of the distribution channels from becoming blocked.

Dank der erfindungsgemässen Vorrichtung wird das beizugebende Material gleichmässig in den Förderstrom eingespeist.Thanks to the device according to the invention, the material to be added is fed uniformly into the flow.

Erfindungsgemässe Vorrichtungen lassen sich an allen oder ausgewählten Beigabestellen in eine Spritzbetonleitung einbauen (so z.B. für alle separat beizugebenden Materialien oder nur für pulverförmige Beigabestoffe).Devices according to the invention can be installed at all or selected addition points in a shotcrete line (for example for all materials to be added separately or only for powdered addition materials).

Die Erfindung wird nachstehend anhand eines in der Zeichnung dargestellten Ausführungsbeispiels noch etwas näher erläutert. Es zeigen:

Fig. 1
einen Längsschnitt durch eine erfindungsgemässe Beigabevorrichtung;
Fig. 2
eine Stirnansicht, teilweise im Schnitt, der Vorrichtung nach Fig. 1, und
Fig. 3
rein schematisch eine Spritzbetonleitung mit zwei eingebauten Vorrichtungen nach der Erfindung (einmal Stromwandler, einmal Pulverbeigabe).
The invention is explained in more detail below with reference to an embodiment shown in the drawing. Show it:
Fig. 1
a longitudinal section through an addition device according to the invention;
Fig. 2
an end view, partially in section, of the device of FIG. 1, and
Fig. 3
purely schematically, a shotcrete line with two built-in devices according to the invention (one current transformer, one powder addition).

Fig. 1 und 2 der Zeichnung zeigen eine Beigabevorrichtung 1 nach der Erfindung, welche z.B. zur Beigabe eines pulverförmigen Materials dient. Die Vorrichtung 1 wird, wie in Fig. 3 gezeigt, in eine Spritzbetonleitung eingebaut. In dieser Leitung wird auf der rechten Seite Druckluft und ggf. eine Flüssigkeit (z.B. Wasser) beigegeben und der Förderstrom über den Pumpschlauch 2 nach links zu einer Spritzpistole 3 gefördert und ausgetragen. Kurz vor der Pistole 3 wird über eine weitere Beigabevorrichtung 1 noch ein gewünschtes Pulver beigegeben. Selbstverständlich können beliebige der Beigabestellen entweder mit konventionellen oder erfindungsgemässen Beigabevorrichtungen ausgerüstet werden.1 and 2 of the drawing show an addition device 1 according to the invention, which is used, for example, to add a powdery material. As shown in FIG. 3, the device 1 is installed in a shotcrete line. Compressed air and possibly a liquid (for example water) are added in this line on the right-hand side and the delivery flow is conveyed via the pump hose 2 to the left to a spray gun 3 and discharged. Shortly before the gun 3, a desired powder is added via a further addition device 1. Of course you can use any of the add-on points be equipped with either conventional or inventive addition devices.

Zurückkommend auf die Fig. 1 und 2 ist ersichtlich, dass die Beigabevorrichtung 1 als Einsatzteil ausgebildet ist und neben Anschlussrohrstücken 4, 5 einen ringförmigen Grundkörper 6 aufweist. Die Rohrstücke 4, 5 sind am Grundkörper 6 angeflanscht.Returning to FIGS. 1 and 2, it can be seen that the addition device 1 is designed as an insert and, in addition to connecting pipe pieces 4, 5, has an annular base body 6. The pipe sections 4, 5 are flanged to the base body 6.

Im Grundkörper 6 ist eine umlaufende Ringkammer 7 angeordnet, aus welcher in Förderrichtung des Förderstromes betrachtet schräg in die zentrale Innenbohrung 8 des Grundkörpers 6 führende, gleichmässig über den Umfang verteilt angeordnete Auslasskanäle 9 ausmünden.Arranged in the base body 6 is a circumferential annular chamber 7, from which, viewed in the direction of conveyance of the flow of flow, discharge obliquely into the central inner bore 8 of the base body 6 leading outlet channels 9 which are distributed uniformly over the circumference.

Ein Einlasskanal 10 für das beizugebende Material mündet tangential in die Ringkammer 7. Dank dieser konstruktiven Massnahme wirkt die Ringkammer 7 als Wirbel- oder Zirkulationskammer, wobei das darin regelmässig zirkulierende Medium (Luft, Pulver, Flüssigkeit oder Gemische davon) absolut regelmässig auf alle Auslasskanäle 9 verteilt wird. Dadurch erfolgt die Beigabe des Mediums ohne Verstopfungsgefahr gleichmässig auf alle Auslasskanäle 9 und damit gleichmässig in den Förderstrom in der Innenbohrung 8.An inlet channel 10 for the material to be added opens tangentially into the annular chamber 7. Thanks to this constructive measure, the annular chamber 7 acts as a swirl or circulation chamber, the medium (air, powder, liquid or mixtures thereof) that circulates therein regularly and absolutely regularly on all outlet channels 9 is distributed. As a result, the medium is added evenly to all outlet channels 9 without risk of clogging and thus evenly into the delivery flow in the inner bore 8.

Claims (5)

Vorrichtung zum Beigeben von Luft, pulverförmigen Feststoffen, Flüssigkeiten oder deren Gemischen in den Förderstrom von Spritzbetonleitungen an vorbestimmten Beigabestellen, mit einem in die Förderleitung einsetzbaren ringförmigen Einsatzteil mit einem in eine Ringkammer des Einsatzteils mündenden Einlasskanal und mehreren aus der Ringkammer zum Förderstrom gerichteten Auslasskanälen, dadurch gekennzeichnet, dass der Einlasskanal tangential in die damit eine Wirbelkammer bildende Ringkammer mündet.Device for adding air, powdery solids, liquids or their mixtures into the delivery flow of shotcrete lines at predetermined addition points, with an annular insert part that can be inserted into the delivery line, with an inlet channel opening into an annular chamber of the insert part and several outlet channels directed from the annular chamber to the delivery flow, thereby characterized in that the inlet channel opens tangentially into the annular chamber thus forming a swirl chamber. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Auslasskanäle in regelmässigen Winkelabständen angeordnet aus der Ringkammer zur Innenbohrung des Einsatzteils führen.Apparatus according to claim 1, characterized in that the outlet channels arranged at regular angular intervals lead from the annular chamber to the inner bore of the insert. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass sich die Eingangsöffnungen der Verteilkanäle in Bodennähe der Ringkammer befinden.Apparatus according to claim 1 or 2, characterized in that the inlet openings of the distribution channels are located near the bottom of the annular chamber. Vorrichtung nach einem der Ansprüche 1-3, dadurch gekennzeichnet, dass die Verteilkanäle in Richtung des Förderstromes aus der Ringkammer geneigt nach innen verlaufen und in die Innenbohrung des Einsatzteils münden.Device according to one of claims 1-3, characterized in that the distribution channels inclined in the direction of the flow from the annular chamber to the inside and open into the inner bore of the insert. Betonspritzleitung mit Beigabestellen für Luft, Flüssigkeiten, pulverförmige Feststoffe oder Gemischen davon, dadurch gekennzeichnet, dass mindestens eine der Beigabestellen mit einer Beigabevorrichtung nach einem der Ansprüche 1-4 ausgerüstet ist.Concrete spray line with addition points for air, liquids, powdery solids or mixtures thereof, characterized in that at least one of the addition points is equipped with an addition device according to one of claims 1-4.
EP96101554A 1995-04-20 1996-02-03 Device for adding air, liquids or powdery solid matters into shotcrete pipes Withdrawn EP0738676A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH113295 1995-04-20
CH1132/95 1995-04-20

Publications (1)

Publication Number Publication Date
EP0738676A1 true EP0738676A1 (en) 1996-10-23

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2436496A1 (en) * 2010-10-01 2012-04-04 Sika Technology AG Mixing unit for pumpable mixtures, particularly for sprayed concrete
WO2012042012A1 (en) * 2010-10-01 2012-04-05 Sika Technology Ag Mixing apparatis for pumpable mixtures and method related thereto
DE102016124102A1 (en) 2016-12-12 2018-06-14 Refratechnik Holding Gmbh Mixing nozzle for a shotcrete application device, as well as shotcrete application device with such a mixing nozzle and shotcrete application method
DE102016124101A1 (en) 2016-12-12 2018-06-14 Refratechnik Holding Gmbh Mixing nozzle for a shotcrete application device, as well as shotcrete application device with such a mixing nozzle and shotcrete application method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE361724C (en) * 1922-10-18 Gewerkschaft Hausbach O Water conveyor for bulk material
DE7622864U1 (en) * 1976-07-20 1976-11-04 Wolf, Kurt, 5620 Velbert MIXING NOZZLE FOR MOISTURIZING MASS IN HOSE LINES
GB1497485A (en) * 1975-03-06 1978-01-12 Gen Resource Corp Apparatus for propagating particles suspended in a gaseous stream through a conveying system
DE3114027A1 (en) * 1981-03-26 1982-02-04 Aliva AG, Widen-Mutschellen Method and apparatus for wet-spraying concrete

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE361724C (en) * 1922-10-18 Gewerkschaft Hausbach O Water conveyor for bulk material
GB1497485A (en) * 1975-03-06 1978-01-12 Gen Resource Corp Apparatus for propagating particles suspended in a gaseous stream through a conveying system
DE7622864U1 (en) * 1976-07-20 1976-11-04 Wolf, Kurt, 5620 Velbert MIXING NOZZLE FOR MOISTURIZING MASS IN HOSE LINES
DE3114027A1 (en) * 1981-03-26 1982-02-04 Aliva AG, Widen-Mutschellen Method and apparatus for wet-spraying concrete

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2436496A1 (en) * 2010-10-01 2012-04-04 Sika Technology AG Mixing unit for pumpable mixtures, particularly for sprayed concrete
WO2012042012A1 (en) * 2010-10-01 2012-04-05 Sika Technology Ag Mixing apparatis for pumpable mixtures and method related thereto
AU2011310100B2 (en) * 2010-10-01 2015-01-15 Normet International Ltd Mixing apparatus for pumpable mixtures and method related thereto
US9364969B2 (en) 2010-10-01 2016-06-14 Sika Technology Ag Mixing apparatus for pumpable mixtures and method related thereto
DE102016124102A1 (en) 2016-12-12 2018-06-14 Refratechnik Holding Gmbh Mixing nozzle for a shotcrete application device, as well as shotcrete application device with such a mixing nozzle and shotcrete application method
DE102016124101A1 (en) 2016-12-12 2018-06-14 Refratechnik Holding Gmbh Mixing nozzle for a shotcrete application device, as well as shotcrete application device with such a mixing nozzle and shotcrete application method
WO2018108679A1 (en) 2016-12-12 2018-06-21 Refratechnik Holding Gmbh Mixing nozzle for a gunned-concrete application device, gunned-concrete application device having such a mixing nozzle, and gunned-concrete application method
WO2018108678A1 (en) 2016-12-12 2018-06-21 Refratechnik Holding Gmbh Mixing nozzle for a shotcrete application device, and a shotcrete application device comprising such a mixing nozzle, and a shotcrete application method

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