EP0588737B1 - Vorrichtung zum kontinuierlichen Zuführen einer Lanze zum Spritzen einer homogenen Mischung aus Partikeln bestehender trockener oder feuchter Stoffe - Google Patents

Vorrichtung zum kontinuierlichen Zuführen einer Lanze zum Spritzen einer homogenen Mischung aus Partikeln bestehender trockener oder feuchter Stoffe Download PDF

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Publication number
EP0588737B1
EP0588737B1 EP93420371A EP93420371A EP0588737B1 EP 0588737 B1 EP0588737 B1 EP 0588737B1 EP 93420371 A EP93420371 A EP 93420371A EP 93420371 A EP93420371 A EP 93420371A EP 0588737 B1 EP0588737 B1 EP 0588737B1
Authority
EP
European Patent Office
Prior art keywords
conduit
transport
mobile assembly
product
tube
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
EP93420371A
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English (en)
French (fr)
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EP0588737A1 (de
Inventor
Pierre Bretonniere
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.)
LANCY
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LANCY
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Publication date
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Classifications

    • 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
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/30—Producing shaped prefabricated articles from the material by applying the material on to a core or other moulding surface to form a layer thereon
    • B28B1/32—Producing shaped prefabricated articles from the material by applying the material on to a core or other moulding surface to form a layer thereon by projecting, e.g. spraying
    • 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

Definitions

  • the present invention relates to an improved device for ensuring the continuous supply of a spray assembly (or lance) of a mixture of particulate matter, dry or wet, such as in particular the spraying of concrete.
  • the projection of the concrete is always carried out by transporting in a pipe a mixture of cement and aggregates and by spraying them on a wall using compressed air.
  • the material mixture is therefore dry, except for the humidity of the sand, during its transport in the supply pipe.
  • compressed air In dry spraying, compressed air is always introduced inside the machine where the material mixture is produced, which is therefore transported at high speed in a stream of air.
  • the present invention relates more particularly to an improvement made to installations implementing the technique known as “dry process”, and it will be described for this application, but it could also be implemented for projection techniques known as “wet route”. diluted flow ".
  • the mixture of cement, gravel or sand (not added with water), kneaded in the traditional way but "dry", is introduced into a machine designated by the general reference (1), the role of which is to propel it with a controlled and regular flow in the transport pipe (2).
  • the compressed air circulating at high speed in the pipe acts as a vehicle; it coats, drives and accompanies all the elements of the mixture up to the lance (3).
  • Rotor machines are technologically simpler, but have the disadvantage of being subjected to abrasion phenomena resulting in rapid wear of the elementary parts.
  • the invention is not limited to such an embodiment and it could be envisaged to have a mobile assembly in the form of an endless chain comprising for example three protuberances making it possible to crush the conduit. according to a determined frequency.
  • the invention therefore relates to the assembly designated by the general reference (6) and which serves to ensure continuous feeding, from a feed hopper ( 4) a spray lance arranged at the end of a transport duct (2).
  • an assembly (6) consists essentially of a flexible connection conduit (9) (rubber hose in particular), connected by its ends (10) and (11) to the base of the hopper (4 ) and at the inlet (13) of the transport tube.
  • the air intake inside the transport pipe (2) is carried out by means of an inlet (12) arranged immediately in the connection area between the flexible pipe (9) and the transport pipe. (12). This air supply line is permanently supplied.
  • the flexible connection conduit (9) which connects the outlet of the feed hopper (4) to the inlet of the actual transportation conduit (2) has two straight portions (15,16) forming an angle between them. 90 ° and connected together by a curved zone (17). This conduit bears against a fixed surface or support (18).
  • a second air inlet (25) which can be fed intermittently, is provided in the right portion (15) connected to the feed hopper (4).
  • a rotor or plate (19) mounted on an axis allowing it to rotate, is arranged opposite the fixed bearing surface (15), so that its periphery comes to tangent with the free surface of the transfer line (9).
  • This rotor plate (19) has on the surface two protrusions (20,21) constituted for example by two rollers and which are arranged diametrically opposite. These protuberances (20, 21) make it possible to crush the transfer tube (9) in a sealed manner, so that the air contained in said tube is expelled towards the front and creates a suction at the rear, allowing product to enter the tube.
  • the assembly according to the invention also comprises a compression element (22) disposed immediately downstream of the feed hopper (4) and allowing, when the plate (19) rotates, and when we release crushing of the tube (9), to avoid backflow towards the hopper when the compressed air drives the product towards the arrival of the transport air (12).
  • the variation in flow rate is obtained by simple variation of the speed of rotation of the disc or rotor (19) and adjustment of the conventional feed hatch (23) that the hopper (4) comprises.
  • FIGS 3 to 10 illustrate a complete cycle.
  • the air supply at (12) is, as said above, permanent, and in addition, the tube at the start of the hopper side cycle (4) is open.
  • the protuberance or roller (20) expels the air in front of it, creating a vacuum in the tube (9) at the rear. As a result, the product falls into the tube by suction and gravity.
  • Such a particularly simple projection assembly not only makes it possible to obtain a continuous supply, but also eliminates the risks of wear and prevents any formation of dust by the impossibility of leaks and the absence of decompression.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Nozzles (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)

Claims (3)

  1. Vorrichtung (6) zum Aufrechterhalten des pneumatischen Förderns und zum kontinuierlichen Versorgen einer Anordnung zum Spritzen von Beton (oder eines ähnlichen Materials), die unterhalb des Beschickungstrichters (4) einer Spritzeinrichtung anordenbar ist und zum Versorgen des Spritzrohres (3) dient, wobei die Vorrichtung (6) umfaßt:
    - eine verformbare Verbindungsleitung (9), die den Ausgang des Beschickungstrichters (4) mit dem Eingang der Förderleitung (2) verbindet und die Mischung dem Spritzrohr (3) zuführt, wobei die Leitung (9) sich gegen eine feste Oberfläche (18) abstützt;
    - eine bewegliche Anordnung (19), die in der Richtung, in der das Produkt entleert werden soll, verfahrbar ist, und die mit Vorsprüngen (Rollen, Walzen...)(20, 21) versehen ist, mit denen das Rohr (9) dicht zusammengequetscht werden kann,
    dadurch gekennzeichnet, daß:
    - die bewegliche Anordnung (19) eine solche Struktur aufweist, daß dann, wenn die bewegliche Anordnung (19) verfahren wird, die in der Verbindungsleitung (9) enthaltene Luft nach vorne getrieben wird und hinter sich einen Saugeffekt bewirkt, durch den das Produkt in die Verbindungsleitung (9) eintritt;
    - ein stromabwärts des Beschickungstrichters (4) angeordnetes Kompressionselement (22) dann, wenn die bewegliche Anordnung (19) verfahren wird und die Zusammenquetschung der Verbindungsleitung (9) freigibt, bewirkt, daß ein Rückstrom in Richtung auf den Trichter (4) verhindert wird, wenn die Druckluft das Produkt zum Einlaß der Transportluft treibt, und daß die Versorgung des Produkts im Inneren der Transportleitung (2) reguliert wird.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß:
    - die verformbare Verbindungsleitung (9) zwei gerade Endstücke (15, 16) umfaßt, die einen Winkel von 90° bilden und miteinander über ein Bogenstück (17) verbunden sind;
    - die bewegliche Anordnung (6) durch einen Rotor oder eine Scheibe (19) gebildet wird, der in Drehrichtung angetrieben wird und mit zwei Vorsprüngen oder Quetschrollen (20, 21) bestückt ist, die einander diametral gegenüberliegen.
  3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die verformbare Verbindungsleitung gerade ist, und daß die bewegliche Einheit durch eine endlose Kette gebildet wird, die über ihre Länge mit Quetsch-Vorsprüngen versehen ist.
EP93420371A 1992-09-18 1993-09-17 Vorrichtung zum kontinuierlichen Zuführen einer Lanze zum Spritzen einer homogenen Mischung aus Partikeln bestehender trockener oder feuchter Stoffe Expired - Lifetime EP0588737B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9211355A FR2695858B1 (fr) 1992-09-18 1992-09-18 Dispositif permettant d'assurer l'alimentation continue d'une lance de projection d'un mélange homogène de matières "particulaires" sèches ou humides.
FR9211355 1992-09-18

Publications (2)

Publication Number Publication Date
EP0588737A1 EP0588737A1 (de) 1994-03-23
EP0588737B1 true EP0588737B1 (de) 1997-04-23

Family

ID=9433812

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93420371A Expired - Lifetime EP0588737B1 (de) 1992-09-18 1993-09-17 Vorrichtung zum kontinuierlichen Zuführen einer Lanze zum Spritzen einer homogenen Mischung aus Partikeln bestehender trockener oder feuchter Stoffe

Country Status (5)

Country Link
EP (1) EP0588737B1 (de)
AT (1) ATE152032T1 (de)
DE (1) DE69310067T2 (de)
ES (1) ES2101277T3 (de)
FR (1) FR2695858B1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2771721B1 (fr) 1997-12-02 2000-02-18 Lucien Vidal Dispositif pour transporter pneumatiquement un materiau tel que du beton
CN102872758B (zh) * 2012-10-19 2015-08-19 宁波东来化工有限公司 一种投料斗
CN104324666B (zh) * 2014-09-30 2016-05-11 宁波保润石化有限公司 酯化釜送酯粉装置
CN106219246B (zh) * 2016-09-22 2018-05-01 付建华 一种水泥砂浆运输机

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE861916C (de) * 1950-11-23 1953-01-08 Oskar Dr-Ing Posch Vorrichtung zum maschinellen Aufbereiten, Foerdern und Verarbeiten von Moertel zum Verputzen von Waenden und Decken
NL275676A (de) * 1961-03-08
US3311065A (en) * 1964-10-15 1967-03-28 Plastering Dev Ct Inc Pumping apparatus
DE2138113A1 (de) * 1971-07-30 1973-02-08 Schaubstahl Werke Einrichtung zur verarbeitung moertelaehnlicher massen
DE2143172B1 (de) * 1971-08-28 1973-02-15 Beton-Spritz-Maschinen Gmbh & Co, 6000 Frankfurt Spritzmaschine fur Beton, Mörtel oder ähnliches Gut
FR2567498B1 (fr) * 1984-07-16 1986-12-12 Costes Jean Procede et dispositifs permettant de transferer des poudres seches vers un milieu liquide en s'affranchissant des problemes poses par la poussiere et la formation de croutes
GB2249591B (en) * 1990-10-01 1994-01-26 Pressure Pointing Ltd Mortar dispensing apparatus

Also Published As

Publication number Publication date
EP0588737A1 (de) 1994-03-23
DE69310067D1 (de) 1997-05-28
ATE152032T1 (de) 1997-05-15
FR2695858A1 (fr) 1994-03-25
ES2101277T3 (es) 1997-07-01
DE69310067T2 (de) 1997-07-31
FR2695858B1 (fr) 1994-11-25

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