EP0592793A1 - 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
EP0592793A1
EP0592793A1 EP93113616A EP93113616A EP0592793A1 EP 0592793 A1 EP0592793 A1 EP 0592793A1 EP 93113616 A EP93113616 A EP 93113616A EP 93113616 A EP93113616 A EP 93113616A EP 0592793 A1 EP0592793 A1 EP 0592793A1
Authority
EP
European Patent Office
Prior art keywords
binder
aggregate
pneumatic conveying
feed
feed station
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.)
Granted
Application number
EP93113616A
Other languages
German (de)
English (en)
Other versions
EP0592793B1 (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 method for applying a mortar or concrete by spraying, in which a fast-setting binder, in particular a "short" cement, is mixed with the aggregate and transported by pneumatic conveying to a spray nozzle, where water is added.
  • the invention further relates to a device for performing the method.
  • the invention has for its object to reduce the effort for the application of a mortar or concrete with fast setting binder.
  • this purpose is achieved, starting from a method of the type mentioned at the outset, in that the binder is added to the aggregate immediately before or during pneumatic conveying.
  • 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 disruptions in the delivery and mixing with the water at the spray nozzle.
  • a device accordingly has in common with the known devices a pneumatic conveying device for transporting a solid mixture of a mortar or concrete containing a binder and aggregate to a spray nozzle provided with a water supply. It differs in an embodiment for adding the binder in the pneumatic conveying in that two series-connected feeding stations for binding agent and aggregate are provided for the pneumatic conveying device.
  • the pneumatic conveying stream is preferably first loaded with the binder and then with the aggregate, ie the feed station for the binder is connected upstream of the feed station for the aggregate.
  • the feed station known per se from US Pat. No. 2,314,031 is proposed for the binder and / or the aggregate, consisting of a hopper to be filled with the material in question and a rotor arranged beneath it and rotating about a vertical axis, in which a ring of vertical chambers is arranged in the manner of a revolver drum, which is open at the top and closed at the bottom on one section of its circulation path and open at the top and bottom on another section and is arranged between a feed and a discharge of the pneumatic conveying stream.
  • the separate task is trouble-free and there is particularly good mixing.
  • a device differs from the prior art under consideration in that that a pneumatic feed station is provided with a hopper to be filled with the aggregate and a rotor arranged underneath it, rotating about a vertical axis, in which a ring of vertical chambers is arranged, which are open and closed on a portion of their circulation path at the top and bottom another section open at the top and bottom and arranged between a feed and a discharge of the pneumatic flow, and that a mechanical conveyor for the binder leads into the funnel and opens out shortly above a bottom of the funnel, preferably in the center.
  • the speed of mixing and conveying the combined material is still sufficient to avoid clumping and other disturbances.
  • an impeller that sweeps over the bottom of the funnel is preferably arranged under the mouth, preferably with a drive shaft that is coaxial or the same as the shaft of the rotor.
  • the conveyor expediently consists of a conveyor screw which is arranged in a casing tube and is introduced laterally through the funnel wall and which is preferably at the same time provided with an adjustable drive as a metering device, preferably an infinitely adjustable motor.
  • the screw conveyor can lead out of a storage container arranged next to the funnel into the funnel, preferably a trough-shaped storage container with a Auger and / or paddle shaft above its bottom, the continuation of which represents the former screw conveyor.
  • the feed stations 1 and 2 essentially consists of two feed stations 1 and 2 of a pneumatic conveying device.
  • the feed stations 1 and 2 have the same structure with differences in size:
  • 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. It consists on the main part of its height from a casting 10 and above and below this from a steel plate 11 as a replaceable wear part.
  • a circular row of chambers 12 is arranged in the rotor 9.
  • the chambers 12 have the same cross section and the same distance from one another as the passages 5 in the base 4.
  • the lower end of the arrangement is formed by a rubber plate 13, which again consists of a slidable special rubber and a steel base plate 14 on which the rubber plate 13 rests.
  • the rubber plate 13 and the base plate 14 have a recess 15 which covers the recess 6 in the base 4.
  • the recesses 6 and 15 extend with approximately the same width as the chambers 12 of the rotor 9, approximately over two chambers 12.
  • a conveyor line 16 is connected under the recess 15 to the base plate 14, which ends at the feed station 2 as its introduction 7.
  • a feed line 17 leading to a spray nozzle is connected to the base plate 14 of the feed station 2. It is again provided with an air inlet 18.
  • the rotor 9 is connected to a drive shaft 20 via a square 19. Furthermore, the drive shaft 20 drives, via a square 21, an impeller 23 which slides on the bottom 4 with a disk 22 and is arranged at a certain distance above the bottom 4 in the funnel 3. The drives of feed stations 1 and 2 are synchronized.
  • a short cement is poured into the hopper 3 of the loading station 1 and a fine-grained gravel as an aggregate into the hopper 3 of the loading station 2.
  • the material evenly scooped up by the impeller 23, falls through the passages 25 into the chambers 12. It slides in the bottom over the rubber plate 13.
  • the chambers get on the other side between the Recesses 6 and 15, the material from which is constantly from the introduction 7 through two or three chambers 12 into the delivery line 16 or 17 flowing flow stream blown out.
  • the cement taken up in the feed station 1 mixes with the air in the aggregate.
  • the air inlet 18 allows the amount of air to be corrected if necessary. First and foremost, 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 feed station 1 could, for example, be set up under a cement silo from which refilling is always carried out, and it could be connected to the feed station 2 by a hose as a delivery line 16.
  • 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.
  • Common drive both are, for example, a motor 31 which can be varied between 50 and 300 rpm by means of a frequency converter.
  • 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 binder is gripped by the impeller 23 and, with premixing with the sand, the pneumatic conveying is applied as described above for FIG. 1. 70 to 80% of the conveying air is supplied through the inlet 7, the rest through the air inlet 18 on the conveying line 17.
  • 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)
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
DE4234745A DE4234745A1 (de) 1992-10-15 1992-10-15 Verfahren und Vorrichtung zum Auftragen eines Mörtels oder Betons durch Spritzen
DE4234745 1992-10-15

Publications (2)

Publication Number Publication Date
EP0592793A1 true EP0592793A1 (fr) 1994-04-20
EP0592793B1 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 (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996005150A1 (fr) * 1994-08-10 1996-02-22 Sandoz Ltd. Additif accelerateur pour ciment
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
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
WO2021051474A1 (fr) * 2019-09-17 2021-03-25 山东科技大学 Machine d'agitation et de projection de type humide tout-en-un
WO2021214398A1 (fr) * 2020-04-24 2021-10-28 Christian Stephan Dispositif de machine de projection

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9413836U1 (de) * 1994-08-26 1995-07-13 Rombold & Gfröhrer GmbH & Co. KG, 71254 Ditzingen Anlage zum Spritzen von Trockenbaustoffen
CN105014788A (zh) * 2015-06-22 2015-11-04 刘洋 一种多用途建材生产工艺与装置

Citations (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

Patent Citations (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 (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996005150A1 (fr) * 1994-08-10 1996-02-22 Sandoz Ltd. Additif accelerateur pour ciment
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
WO2021051474A1 (fr) * 2019-09-17 2021-03-25 山东科技大学 Machine d'agitation et de projection de type humide tout-en-un
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

Also Published As

Publication number Publication date
DE59308574D1 (de) 1998-06-25
DE4234745A1 (de) 1994-04-21
EP0592793B1 (fr) 1998-05-20
ATE166280T1 (de) 1998-06-15

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