EP0592793B1 - Procédé et dispositif pour appliquer un mortier ou béton par giclage - Google Patents

Procédé et dispositif pour appliquer un mortier ou béton par giclage Download PDF

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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
Application number
EP93113616A
Other languages
German (de)
English (en)
Other versions
EP0592793A1 (fr
Inventor
Hans-Peter Dipl.-Ing. Irsch
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.)
PFT PUTZ- UND FOERDERTECHNIK GMBH & CO. KG
Original Assignee
Pft Putz- und Fordertechnik & Co KG GmbH
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 Pft Putz- und Fordertechnik & Co KG GmbH filed Critical Pft Putz- und Fordertechnik & Co KG GmbH
Priority to US08/186,810 priority Critical patent/US5433519A/en
Publication of EP0592793A1 publication Critical patent/EP0592793A1/fr
Application granted granted Critical
Publication of EP0592793B1 publication Critical patent/EP0592793B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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)

Claims (5)

  1. Dispositif pour l'application d'un mortier ou d'un béton en une couche sur une paroi murale par projection à l'aide d'un dispositif de transport pneumatique (4-17) pour le transport d'un agent liant à vitesse de prise élevée, en particulier un ciment à prise rapide, et d'un mélange solide du mortier ou du béton, comportant un granulat, vers un gicleur de projection équipé d'une alimentation d'eau,
    caractérisé en ce qu'on a prévu un poste d'alimentation (25) pneumatique présentant un entonnoir (3) à remplir avec le granulat et un rotor (9) disposé au-dessous de cet entonnoir et tournant autour d'un axe vertical, dans lequel on a disposé une couronne de chambres (12) verticales, dont une section du périmètre est ouverte vers le haut et fermée vers le bas et une autre section est ouverte vers le haut et vers le bas et qui sont disposées entre une alimentation (7) et une évacuation (17) du courant pneumatique de transport et en ce qu'un transporteur (27,28) mécanique pour l'agent liant aboutit dans l'entonnoir (3) en débouchant (29) un peu au-dessus du fond (4) de l'entonnoir (3).
  2. Dispositif selon la revendication 1, caractérisé en ce que le transporteur (27,28) débouche au milieu au-dessus du fond (4).
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce qu'on a disposé au-dessous de l'orifice (29) une roue à hélice (23) passant sur la surface du fond (4) de l'entonnoir (3), présentant de préférence un arbre d'entraínement (20) coaxial ou identique à l'arbre du rotor (9).
  4. Dispositif selon une quelconque des revendications 1 à 3, caractérisé en ce que le transporteur (27, 28) est constitué par une vis de transport sans fin (27) disposée dans un tube de protection (28) et introduite latéralement dans la paroi de l'entonnoir, ladite vis sans fin étant équipée de préférence d'un dispositif d'entraínement réglable, servant simultanément de dispositif de dosage, de préférence d'un moteur (31) réglable en continu.
  5. Dispositif selon la revendication 4, caractérisé en ce que la vis de transport sans fin (27) part d'un réservoir (26) disposé à côté de l'entonnoir (3) et aboutit dans l'entonnoir (3), ledit réservoir (26) étant de préférence en forme d'auge avec un arbre à vis sans fin ou à aube (31) situé au-dessus du fond et dont le prolongement représente la première vis de transport (27).
EP93113616A 1992-10-15 1993-08-26 Procédé et dispositif pour appliquer un mortier ou béton par giclage Expired - Lifetime EP0592793B1 (fr)

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 (de) 1992-10-15 1992-10-15 Verfahren und Vorrichtung zum Auftragen eines Mörtels oder Betons durch Spritzen

Publications (2)

Publication Number Publication Date
EP0592793A1 EP0592793A1 (fr) 1994-04-20
EP0592793B1 true EP0592793B1 (fr) 1998-05-20

Family

ID=6470511

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93113616A Expired - Lifetime EP0592793B1 (fr) 1992-10-15 1993-08-26 Procédé et dispositif pour appliquer un mortier ou béton par giclage

Country Status (3)

Country Link
EP (1) EP0592793B1 (fr)
AT (1) ATE166280T1 (fr)
DE (2) DE4234745A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016206426A1 (fr) * 2015-06-22 2016-12-29 刘洋 Appareil et technologie de production de matériaux de construction à usages multiples

Families Citing this family (7)

* Cited by examiner, † Cited by third party
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 (de) * 1994-08-26 1995-07-13 Rombold & Gfröhrer GmbH & Co. KG, 71254 Ditzingen Anlage zum Spritzen von Trockenbaustoffen
CN102416669A (zh) * 2011-11-29 2012-04-18 洛阳师范学院 一种新型混凝土浆料生产系统
CN105484770A (zh) * 2016-01-15 2016-04-13 中国矿业大学 矿用全风动湿式喷浆机
CN110696186B (zh) * 2019-09-17 2020-08-18 山东科技大学 一种湿式搅拌喷浆一体机
WO2021214398A1 (fr) * 2020-04-24 2021-10-28 Christian Stephan Dispositif de machine de projection
CN111650119A (zh) * 2020-05-09 2020-09-11 北京科技大学 采场多次充填间隔时间确定简易装置及其使用方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
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 (de) * 1979-05-03 1981-01-26 Ivar Wolff Ges M B H Dr Vorrichtung zum zumischen von zuschlagstoffen in einen materialstrom

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016206426A1 (fr) * 2015-06-22 2016-12-29 刘洋 Appareil et technologie de production de matériaux de construction à usages multiples

Also Published As

Publication number Publication date
ATE166280T1 (de) 1998-06-15
EP0592793A1 (fr) 1994-04-20
DE4234745A1 (de) 1994-04-21
DE59308574D1 (de) 1998-06-25

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