EP0592793B1 - Method and apparatus for applying mortar or concrete through spraying - Google Patents
Method and apparatus for applying mortar or concrete through spraying Download PDFInfo
- Publication number
- EP0592793B1 EP0592793B1 EP93113616A EP93113616A EP0592793B1 EP 0592793 B1 EP0592793 B1 EP 0592793B1 EP 93113616 A EP93113616 A EP 93113616A EP 93113616 A EP93113616 A EP 93113616A EP 0592793 B1 EP0592793 B1 EP 0592793B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- funnel
- aggregate
- conveyor
- floor
- concrete
- 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
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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
- B28C5/08—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
- B28C5/10—Mixing in containers not actuated to effect the mixing
- B28C5/12—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers
- B28C5/1238—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers for materials flowing continuously through the mixing device and with incorporated feeding or discharging devices
-
- 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
Definitions
- the invention relates to a device for applying a mortar or concrete in a layer to a wall surface by spraying with a pneumatic conveying device for transporting a fast-setting binder, in particular one short "cement, and aggregate-containing solid mixture of the mortar or concrete to a spray nozzle provided with a water supply.
- Applying mortar or concrete in one layer to a wall surface by spraying is mainly used for concrete renovation, such as in tunnels, on bridges, etc. .
- the concrete Compared to plaster and other plastering mortar, the concrete usually has to be in a slightly thicker one Layer be applied for this reason as well as because of the heavy Supplement tends to decrease.
- the sinking works with you as quickly as possible setting cement and with an additive that counteracts the viscosity of the not yet set Concrete increased.
- the usual addition of water glass to increase viscosity can cause concrete damage later. To avoid him, be younger Time also extremely fast setting cements with a processing time of a few Seconds. So that these cements are not already mixed with the If the aggregate's moisture sets, sand and gravel are used as aggregates dried with relatively great effort.
- the invention is based, with the procedure under consideration the effort of applying a mortar or concrete with quick setting Reduce binders.
- a pneumatic feed station is provided with a hopper to be filled with the aggregate and a rotor arranged beneath it and rotating about a vertical axis, in which a ring of vertical chambers is arranged, which are open at the top and closed at a portion of their circulation path and are open on another section at the top and bottom and are arranged between a feed and a discharge of the pneumatic flow, and in which a mechanical conveyor for the binder leads into the funnel, which opens out just above a bottom of the funnel.
- the binder is added to the aggregate immediately before the pneumatic conveying.
- the immediately subsequent feeding of the material into the pneumatic flow with its strongly mixing effects, possibly also the mixing effect along the length of the flow replaces the mixing process in a mixer.
- the aggregate does not need to be dried.
- the length of time that the binder is exposed to the moisture of the aggregate coincides in seconds.
- the feed station taken on its own, is known in principle from US-A-2,314,031. It results in particularly good mixing.
- the pneumatic composition Feeding station is preferably under the, preferably central, mouth arranged over the bottom of the funnel impeller, preferably with a drive shaft that is coaxial or identical to the shaft of the rotor.
- the conveyor expediently consists of an arranged in a casing tube, Conveyor screw inserted laterally through the hopper wall, preferably at the same time as a metering device is provided with an adjustable drive, preferably one steplessly adjustable motor.
- the screw conveyor can be made from a next to the Guide the hopper arranged out of the hopper, preferably a trough-shaped storage container with a worm and / or shovel shaft its bottom, the continuation of which represents the former screw conveyor.
- the drawing shows an embodiment of the invention. It shows a vertical, axial section through a device for combining the solid components of a mortar or concrete and for producing a flow and mixing at the same time.
- a feed station 25 of a pneumatic conveyor has the following structure:
- a funnel 3 has a bottom 4, in which on its right half in the drawing a circular arc-shaped row of passages 5 of circular cross-section are arranged.
- the floor 4 On the left half, the floor 4 consists of solid material only with a recess 6 lying in the plane of the drawing. The recess 6 is closed at the top, open at the bottom and provided with an inlet 7 for conveying air on the side.
- Under the floor 4 is a congruent with the passages 5 and the recess 6 perforated rubber plate 8 made of a slidable special rubber is attached.
- a rotor 9 bears against the rubber plate 8 from below.
- the rotor 9 is a circular one Row of chambers 12 arranged.
- the chambers 12 have the same cross section and the same distance from each other as the passages 5 in the bottom 4th
- the lower end of the arrangement form one, again from a slidable Special rubber existing, rubber plate 13 and a base plate 14 made of steel, on the the rubber plate 13 lies.
- the rubber plate 13 and the bottom plate 14 have one Cover 15 with the recess 6 arranged in the bottom 4 Recesses 6 and 15 extend, the latter with approximately the same width as that Chambers 12 of the rotor 9, approximately across two chambers 12.
- the rotor 9 is connected to a drive shaft 20 via a square 19. Further drives the drive shaft 20 with a disk 22 sliding on the floor 4, in Impeller 23 arranged somewhat above the bottom 4 in the funnel 3.
- a screw conveyor 27 is inserted from the side into a casing tube 28 into the funnel 3, which is to be filled with the aggregate.
- the screw conveyor 26 and its casing tube 28 end approximately on the central axis of the funnel 3 at a small distance of, for example, 5 to 10 cm above the impeller 23; the casing tube 28 has an opening 29 cut obliquely downwards.
- the screw conveyor 27 continues a screw and blade shaft 30 arranged on the rounded bottom of the trough-shaped storage container 26.
- the common drive of both is, for example, a motor 31 which can be varied by a frequency converter between 50 and 300 rpm.
- the aggregate consists, for example, of sand with a grain size of 0 to 8 mm, which has a moisture content of about 3%. Sack goods are used for the binder.
- the steplessly adjustable motor 31 allows the addition of the binder to be metered precisely. After leaving the casing tube 28, the binding agent is gripped by the impeller 23 and, with premixing with the sand, applied to the pneumatic conveying:
- the material falls evenly scooped up from the impeller 23, through the passages 25 into the chambers 12. It slides in the bottom over the rubber plate 13. Then the chambers open the other side between the recesses 6 and 15, the material of the constantly from the introduction 7 through two or three chambers 12 into the delivery line 17 flowing flow stream blown out. 70 to 80% of the conveying air fed through the inlet 7, the rest through the air inlet 18 on the delivery line 17.
- the air inlet 18 allows a correction of the amount of air. Primarily it enables the delivery line 17 to be blown free in the event of a malfunction.
- the water is only supplied at the spray nozzle.
- the mixing takes place largely in each case in the chamber 12. However, there is also a mixing effect in the pneumatic conveyor hose, which is generally at least 20 m long.
- the rotor 9 can, depending on requirements, be made available with a different overall height and / or number of chambers 12.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
- Aftertreatments Of Artificial And Natural Stones (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zum Auftragen eines Mörtels oder Betons in einer
Schicht an eine Wandfläche durch Spritzen mit einer pneumatischen Fördereinrichtung
zum Transportieren eines ein schnell abbindendes Bindemittel, insbsondere einen
Das Auftragen von Mörtel oder Beton in einer Schicht an eine Wandfläche durch Spritzen ist vor allem bei der Betonsanierung gebräuchlich, wie in Tunneln, an Brücken usw. .Applying mortar or concrete in one layer to a wall surface by spraying is mainly used for concrete renovation, such as in tunnels, on bridges, etc. .
Verglichen mit Gips und anderem Putzmörtel muß der Beton meist in einer etwas dickeren Schicht aufgetragen werden, die aus diesem Grunde wie auch wegen des schweren Zuschlages zum Absinken neigt. Dem Absinken wirkt man mit einem möglichst schnell abbindenden Zement und mit Zusatz entgegen, der die Viskosität des noch nicht abgebundenen Betons erhöht. Der übliche Zusatz von Wasserglas zur Viskositätserhöhung kann jedoch spätere Betonschäden hervorrufen. Um ihn zu vermeiden, werden in jüngerer Zeit auch extrem schnell abbindende Zemente mit einer Verarbeitungszeit von wenigen Sekunden eingesetzt. Damit diese Zemente nicht schon beim Mischen mit der Feuchtigkeit des Zuschlags abbinden, werden als Zuschlag verwendeter Sand und Kies mit verhältnismäßig großem Aufwand getrocknet. Compared to plaster and other plastering mortar, the concrete usually has to be in a slightly thicker one Layer be applied for this reason as well as because of the heavy Supplement tends to decrease. The sinking works with you as quickly as possible setting cement and with an additive that counteracts the viscosity of the not yet set Concrete increased. The usual addition of water glass to increase viscosity can cause concrete damage later. To avoid him, be younger Time also extremely fast setting cements with a processing time of a few Seconds. So that these cements are not already mixed with the If the aggregate's moisture sets, sand and gravel are used as aggregates dried with relatively great effort.
Aus der US-A-1,663,206 sind ein Verfahren und eine Vorrichtung zum Mischen und Austragen von Beton bekannt mit einem in verschiedene Kammern für Bindemittel, Zuschlag und Farbe unterteilten Silobehälter und einer Einrichtung, die verschiedenen Bestandteile in einem gewünschten Mengenverhältnis daraus abzuziehen, zu mischen und aus der Mischeinrichtung pneumatisch abzufördern zu einer Austragsvorrichtung, in der noch Wasser hinzugemischt wird. Die Vorrichtung arbeitet zusammenhängend, die erwähnten Schritte folgen unmittelbar aufeinander.From US-A-1,663,206 a method and an apparatus for mixing and Discharge of concrete known with in different chambers for binders, Surcharge and color divided silo containers and a facility that different Subtract ingredients in a desired ratio, mix and pneumatically conveyed from the mixing device to a discharge device, in which is still mixed with water. The device works contiguously The steps mentioned immediately follow one another.
Der Erfindung liegt die Aufgabe zugrunde, bei der in Betracht stehenden Verfahrensweise den Aufwand für das Auftragen eines Mörtels oder Betons mit schnell abbindendem Bindemittel zu verringern.The invention is based, with the procedure under consideration the effort of applying a mortar or concrete with quick setting Reduce binders.
Gemäß der Erfindung wird dieser Zweck durch eine Vorrichtung der eingangs genannten
Art erfüllt,
bei der eine pneumatische Aufgabestation vorgesehen ist mit einem mit dem Zuschlag
zu befüllenden Trichter und einem unter diesem angeordneten, um eine senkrechte
Achse drehenden Rotor, in dem ein Kranz senkrechter Kammern angeordnet ist, die auf
einem Abschnitt ihres Umlaufweges oben offen und unten geschlossen sind und auf
einem anderen Abschnitt oben und unten offen und zwischen einer Zuführung und einer
Abführung des pneumatischen Förderstromes angeordnet sind,
und bei der in den Trichter ein mechanischer Förderer für das Bindemittel führt, der kurz
über einem Boden des Trichters ausmündet.According to the invention, this purpose is achieved by a device of the type mentioned at the beginning,
in which a pneumatic feed station is provided with a hopper to be filled with the aggregate and a rotor arranged beneath it and rotating about a vertical axis, in which a ring of vertical chambers is arranged, which are open at the top and closed at a portion of their circulation path and are open on another section at the top and bottom and are arranged between a feed and a discharge of the pneumatic flow,
and in which a mechanical conveyor for the binder leads into the funnel, which opens out just above a bottom of the funnel.
Hier wird das Bindemittel unmittelbar vor der pneumatischen Förderung mit dem
Zuschlag zusammengegeben. Die sofort anschließende Aufgabe des Materials in den
pneumatischen Förderstrom mit ihren stark mischenden Effekten, ggf. ferner die
mischende Wirkung auf der Länge des Förderstromes, ersetzt nach der Erfindung den
Mischvorgang in einem Mischer. Der Zuschlag braucht unter diesen Umständen nicht
getrocknet zu werden. Die Dauer, während derer das Bindemittel der Feuchtigkeit des
Zuschlags ausgesetzt ist, fällt auf Sekunden zusammen. Es treten keine Verklumpungen
oder andere Störungen der Förderung und des Vermischens mit dem Wasser an der
Spritzdüse ein.
Die Aufgabestation, für sich genommen, ist aus der US-A-2,314,031 dem Prinzip nach
bekannt. Mit ihr ergibt sich eine besonders gute Durchmischung. Here the binder is added to the aggregate immediately before the pneumatic conveying. According to the invention, the immediately subsequent feeding of the material into the pneumatic flow with its strongly mixing effects, possibly also the mixing effect along the length of the flow, replaces the mixing process in a mixer. Under these circumstances, the aggregate does not need to be dried. The length of time that the binder is exposed to the moisture of the aggregate coincides in seconds. There are no lumps or other disturbances in the delivery and mixing with the water at the spray nozzle.
The feed station, taken on its own, is known in principle from US-A-2,314,031. It results in particularly good mixing.
Um das Material in möglichst kontinuierlicher Zusammensetzung der pneumatischen Aufgabestation zuzuführen, ist vorzugsweise unter der, vorzugsweise mittigen, Ausmündung ein über den Boden des Trichters streichendes Flügelrad angeordnet, vorzugsweise mit einer mit der Welle des Rotors koaxialen oder gleichen Antriebswelle.To make the material as continuous as possible the pneumatic composition Feeding station is preferably under the, preferably central, mouth arranged over the bottom of the funnel impeller, preferably with a drive shaft that is coaxial or identical to the shaft of the rotor.
Zweckmäßigerweise besteht der Förderer aus einer in einem Mantelrohr angeordneten, seitlich durch die Trichterwand eingeführten Förderschnecke, die vorzugsweise zugleich als Dosiervorrichtung mit einem verstellbaren Antrieb versehen ist, vorzugsweise einem stufenlos verstellbaren Motor. Dabei kann die Förderschnecke aus einem neben dem Trichter angeordneten Vorratsbehälter heraus in den Trichter führen, vorzugsweise einem trogförmigen Vorratsbehälter mit einer Schnecken- und/oder Schaufelwelle über seinem Boden, deren Fortsetzung die erstere Förderschnecke darstellt.The conveyor expediently consists of an arranged in a casing tube, Conveyor screw inserted laterally through the hopper wall, preferably at the same time as a metering device is provided with an adjustable drive, preferably one steplessly adjustable motor. The screw conveyor can be made from a next to the Guide the hopper arranged out of the hopper, preferably a trough-shaped storage container with a worm and / or shovel shaft its bottom, the continuation of which represents the former screw conveyor.
Die Zeichnung gibt ein Ausführungsbeispiel der Erfindung wieder.
Sie zeigt einen senkrechten, axialen Schnitt durch eine Einrichtung zum Zusammengeben
der Feststoffbestandteile eines Mörtels oder Betons und zum Erzeugen eines Förderstromes
und zugleich Mischen.The drawing shows an embodiment of the invention.
It shows a vertical, axial section through a device for combining the solid components of a mortar or concrete and for producing a flow and mixing at the same time.
Eine Aufgabestation 25 einer pneumatischen Fördereinrichtung hat folgenden Aufbau:A
Ein Trichter 3 weist einen Boden 4 auf, in dem auf seiner in der Zeichnung rechten
Hälfte eine kreisbogenförmige Reihe eng aneinanderschließender Durchlässe 5 kreisförmigen
Querschnitts angeordnet ist. Auf der linken Hälfte besteht der Boden 4 aus
Vollmaterial lediglich mit einer in der Zeichenebene liegenden Ausnehmung 6. Die Ausnehmung
6 ist oben geschlossen, nach unten offen und an der Seite mit einer Einführung
7 für Förderluft versehen.
Unter dem Boden 4 ist eine deckungsgleich mit den Durchlässen 5 und der Ausnehmung
6 durchbrochene Gummiplatte 8 aus einem gleitfähigen Spezialgummi angebracht.A
Under the floor 4 is a congruent with the
An der Gummiplatte 8 liegt von unten ein Rotor 9 an. In dem Rotor 9 ist eine kreisförmige
Reihe von Kammern 12 angeordnet. Die Kammern 12 haben gleichen Querschnitt
und gleichen Abstand voneinander wie die Durchlässe 5 in dem Boden 4. A
Den unteren Abschluß der Anordnung bilden eine, wiederum aus einem gleitfähigen
Spezialgummi bestehende, Gummiplatte 13 und eine Bodenplatte 14 aus Stahl, auf der
die Gummiplatte 13 liegt. Die Gummiplatte 13 und die Bodenplatte 14 haben eine sich
deckend mit der Ausnehmung 6 in dem Boden 4 angeordnete Ausnehmung 15. Die
Ausnehmungen 6 und 15 erstrecken sich, die letztere mit etwa gleicher Breite wie die
Kammern 12 des Rotors 9, etwa über zwei Kammern 12 hinweg.The lower end of the arrangement form one, again from a slidable
Special rubber existing, rubber plate 13 and a
Unter der Ausnehmung 15 ist an die Bodenplatte 14 eine zu einer Spritzdüse führende
Förderleitung 17 angeschlossen. Sie ist noch einmal mit einer Lufteinführung 18 versehen.Under the
Der Rotor 9 ist über einen Vierkant 19 mit einer Antriebswelle 20 verbunden. Ferner
treibt die Antriebswelle 20 ein mit einer Scheibe 22 auf dem Boden 4 gleitendes, in
etwas Abstand über dem Boden 4 in dem Trichter 3 angeordnetes Flügelrad 23.The
Aus einem trogförmigen Vorratsbehälter 26 für das Bindemittel ist eine Förderschnecke
27 in einem Mantelrohr 28 von der Seite her in den Trichter 3 eingeführt, der mit dem
Zuschlag zu befüllen ist. Die Förderschnecke 26 und ihr Mantelrohr 28 enden etwa auf
der Mittelachse des Trichters 3 in einem nur geringen Abstand von z.B. 5 bis 10 cm
über dem Flügelrad 23; das Mantelrohr 28 hat eine schräg nach unten abgeschnittene
Ausmündung 29.
Die Förderschnecke 27 setzt dabei eine auf dem gerundeten Boden des trogförmigen
Vorratsbehälters 26 angeordnete Schnecken- und Schaufelwelle 30 fort. Gemeinsamer
Antrieb beider ist z.B. ein durch einen Frequenzumformer zwischen 50 und 300 U/min
variierbarer Motor 31.
Der Zuschlag besteht beispielsweise aus einem Sand von 0 bis 8 mm Körnung, der eine
Feuchte von etwa 3% aufweist. Für das Bindemittel wird Sackware verwandt. Der
stufenlos verstellbare Motor 31 erlaubt, die Zugabe des Bindemittels genau zu dosieren.
Das Bindemittel wird nach Verlassen des Mantelrohres 28 von dem Flügelrad 23 erfaßt
und unter Vormischen mit dem Sand der pneumatischen Förderung aufgegeben:From a trough-
The
The aggregate consists, for example, of sand with a grain size of 0 to 8 mm, which has a moisture content of about 3%. Sack goods are used for the binder. The steplessly
Auf der in der Zeichnung rechten Hälfte des Bodens 4 fällt das Material, gleichmäßig
herangeschaufelt von dem Flügelrad 23, durch die Durchlässe 25 in die Kammern 12.
Es rutscht in diesen unten über die Gummiplatte 13. Gelangen die Kammern dann auf
der anderen Seite zwischen die Ausnehmungen 6 und 15, wird das Material von dem
ständig aus der Einführung 7 durch zwei oder drei Kammern 12 hindurch in die Förderleitung
17 strömenden Förderstrom ausgeblasen. 70 bis 80% der Förderluft werden
durch die Einführung 7 zugeführt, der Rest durch die Lufteinführung 18 an der Förderleitung
17. Die Lufteinführung 18 erlaubt eine Korrektur der Luftmenge. In erster Linie
ermöglicht sie ein Freiblasen der Förderleitung 17 im Störfalle.On the right half of the bottom 4 in the drawing, the material falls evenly
scooped up from the
Wie schon weiter oben erwähnt, wird das Wasser erst an der Spritzdüse zugeführt.As already mentioned above, the water is only supplied at the spray nozzle.
Die Durchmischung vollzieht sich weitgehend schon jeweils in der Kammer 12. In dem,
in der Regel mindestens 20 m langen, pneumatischen Förderschlauch besteht jedoch
gleichfalls eine mischende Wirkung.
Der Rotor 9 kann , je nach Bedarf, mit verschiedener Bauhöhe und/oder Zahl der Kammern
12 zur Verfügung gestellt werden.The mixing takes place largely in each case in the
The
Claims (5)
- An apparatus for applying a layer of mortar or concrete to a wall surface through spraying with a pneumatic conveying device (4-17) for transporting a solid-material mixture of the mortar or concrete to a nozzle provided with a water feeding means, the mixture including a quick-setting binder, especially a quick-setting cement, and aggregate,
characterised in that
a pneumatic delivery station (25) comprising a funnel (3) to be filled with aggregate and a rotor (9) mounted below the funnel and rotating about a vertical axis is provided, with a collar of vertical chambers (12) being arranged in the rotor, which chambers are open at the top and closed at the bottom in one segment of their circular path and open at the top and bottom in another segment, the chambers further being arranged between a feed (7) and a discharge (17) of the pneumatic conveying flow, and that a mechanical conveyor (27,28) for the binder leads into the funnel (3) and discharges (29) shortly above a floor (4) of the funnel (3). - The apparatus according to claim 1,
characterised in that
the conveyor (27, 28) discharges centrally above the floor (4). - The apparatus according to claim 1 or 2,
characterised in that
an impeller (23) sweeping over the floor (4) of the funnel (3) is located below the discharge port (29) and preferably has a drive shaft (20) coaxial to or the same as that of the rotor (9). - The apparatus according to any of claims 1 to 3,
characterised in that
the conveyor (27, 28) comprises a conveyor worm (27) disposed in a jacket pipe (28) and laterally inserted through the funnel wall, said conveyor worm preferably also being provided with a variable drive, preferably an infinitely variable motor (31), as a metering device. - The apparatus according to claim 4,
characterised in that
the conveyor worm (27) leads into the funnel (3) from a supply bin (26) adjacent to the funnel (3), preferably a trough-like supply bin (26) with a screw shaft and/or paddle shaft (31) above its floor, the extension thereof forming the aforementioned conveyor worm (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/186,810 US5433519A (en) | 1993-08-26 | 1994-01-25 | Method and apparatus for the application of mortar or concrete by spraying |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4234745 | 1992-10-15 | ||
| DE4234745A DE4234745A1 (en) | 1992-10-15 | 1992-10-15 | Method and device for applying mortar or concrete by spraying |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0592793A1 EP0592793A1 (en) | 1994-04-20 |
| EP0592793B1 true EP0592793B1 (en) | 1998-05-20 |
Family
ID=6470511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP93113616A Expired - Lifetime EP0592793B1 (en) | 1992-10-15 | 1993-08-26 | Method and apparatus for applying mortar or concrete through spraying |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0592793B1 (en) |
| AT (1) | ATE166280T1 (en) |
| DE (2) | DE4234745A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016206426A1 (en) * | 2015-06-22 | 2016-12-29 | 刘洋 | Multipurpose building-material producing technology and apparatus |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9416114D0 (en) * | 1994-08-10 | 1994-09-28 | Sandoz Ltd | Improvements in or relating to organic compounds |
| DE9413836U1 (en) * | 1994-08-26 | 1995-07-13 | Rombold & Gfröhrer GmbH & Co. KG, 71254 Ditzingen | Plant for spraying dry building materials |
| CN102416669A (en) * | 2011-11-29 | 2012-04-18 | 洛阳师范学院 | Novel concrete slurry production system |
| CN105484770A (en) * | 2016-01-15 | 2016-04-13 | 中国矿业大学 | Full-pneumatic wet-type pulp shooting machine for mine |
| CN110696186B (en) * | 2019-09-17 | 2020-08-18 | 山东科技大学 | Wet-type stirring whitewashing all-in-one |
| WO2021214398A1 (en) * | 2020-04-24 | 2021-10-28 | Christian Stephan | Spraying machine |
| CN111650119A (en) * | 2020-05-09 | 2020-09-11 | 北京科技大学 | Simple device for determining multiple filling interval time of stope and using method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1663206A (en) * | 1923-06-25 | 1928-03-20 | Macrae Thomas | Method of and means for making and delivering quantitative mixtures |
| GB1111953A (en) * | 1966-04-29 | 1968-05-01 | Nii Str Proizv | Device for preparing plastic compounds and for conveying them with the aid of compressed air |
| US3672646A (en) * | 1971-04-15 | 1972-06-27 | Detroit Tool & Eng Co | Pneumatic cement gun machine |
| AT360737B (en) * | 1979-05-03 | 1981-01-26 | Ivar Wolff Ges M B H Dr | DEVICE FOR ADDING AGGREGATES INTO A MATERIAL FLOW |
-
1992
- 1992-10-15 DE DE4234745A patent/DE4234745A1/en not_active Withdrawn
-
1993
- 1993-08-26 EP EP93113616A patent/EP0592793B1/en not_active Expired - Lifetime
- 1993-08-26 DE DE59308574T patent/DE59308574D1/en not_active Expired - Fee Related
- 1993-08-26 AT AT93113616T patent/ATE166280T1/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016206426A1 (en) * | 2015-06-22 | 2016-12-29 | 刘洋 | Multipurpose building-material producing technology and apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| DE59308574D1 (en) | 1998-06-25 |
| EP0592793A1 (en) | 1994-04-20 |
| ATE166280T1 (en) | 1998-06-15 |
| DE4234745A1 (en) | 1994-04-21 |
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