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WO2013020990A1 - Appareil de projection et procédé d'analyse d'un mélange distribué - Google Patents

Appareil de projection et procédé d'analyse d'un mélange distribué Download PDF

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Publication number
WO2013020990A1
WO2013020990A1 PCT/EP2012/065482 EP2012065482W WO2013020990A1 WO 2013020990 A1 WO2013020990 A1 WO 2013020990A1 EP 2012065482 W EP2012065482 W EP 2012065482W WO 2013020990 A1 WO2013020990 A1 WO 2013020990A1
Authority
WO
WIPO (PCT)
Prior art keywords
binder
additive
dispensing
mixture
sprayer
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.)
Ceased
Application number
PCT/EP2012/065482
Other languages
German (de)
English (en)
Inventor
Didier Lootens
Raphael Bourquin
Patrik Kuhn
Benedikt Lindlar
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 Technology AG
Original Assignee
Sika Technology 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 Sika Technology AG filed Critical Sika Technology AG
Publication of WO2013020990A1 publication Critical patent/WO2013020990A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • B28C5/02—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
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/80—Forming a predetermined ratio of the substances to be mixed
    • B01F35/88—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise
    • B01F35/882—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise using measuring chambers, e.g. volumetric pumps, for feeding the substances
    • B01F35/8822—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise using measuring chambers, e.g. volumetric pumps, for feeding the substances using measuring chambers of the piston or plunger type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
    • B05B7/1481—Spray pistols or apparatus for discharging particulate material
    • B05B7/149—Spray pistols or apparatus for discharging particulate material with separate inlets for a particulate material and a liquid to be sprayed
    • 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

Definitions

  • the present application relates to a spraying apparatus and a method for analyzing a dispensing mixture.
  • Spraying machines in particular shotcrete radiators, are used to produce a dispensing mixture, e.g. As a mixture of shotcrete or mortar to apply pneumatically from a spray nozzle.
  • a dispensing mixture e.g. As a mixture of shotcrete or mortar to apply pneumatically from a spray nozzle.
  • a particular advantage of the shotcrete and the installation method is that the impact is accompanied by a compression of the shotcrete.
  • shotcrete is used primarily for the repair / reinforcement of concrete components, as well as for rock consolidation, and in particular temporary, expansion in tunneling. However, the application of the method is not limited to these ranges.
  • a sprayer is known for example from DE 44 44 405 AI.
  • a concrete is a mixture of cement, aggregate and mixing water or water.
  • additives are added to alter the properties of the concrete.
  • additives in the form of hardening accelerators are used.
  • the proper selection of the composition of a dispensing mixture is very complicated, since it leads to the material loss already explained as well as physical changes due to the processing method. Therefore, it is extremely time-consuming (cost-intensive and time-consuming) to develop a suitable dispensing mixture for specific requirements. For example, cure time, adhesion to the application surface, processing temperature, etc. must be considered.
  • a suitable dispensing mixture is determined in an iterative process. For this purpose, the dispensing mixture must be applied and analyzed with conventional, very expensive sprayers. It is usually necessary to apply large quantities of the dispensing mixture for these tests since the conventional sprayers are designed for this purpose.
  • a spray device which comprises:
  • At least one binder delivery device for dispensing at least one binder, in particular cement
  • At least one additive dispensing device for dispensing at least one additive, in particular a hardening accelerator and / or solidification accelerator;
  • At least one fluid source in particular a compressor, for providing a propellant
  • At least one mixer for mixing the binder, the additive and the blowing agent, wherein the mixer for forming a premix, comprising the blowing agent and the additive, and for mixing the premix is formed with the binder.
  • the fluid source may be an air and / or gas source, e.g. As a gas cylinder to be.
  • An essential point of the present invention is thus to provide a spray device which allows a spray application of a dispensing mixture.
  • the dispensing mixture may be a paste and / or a cement mixture and / or a mortar mixture.
  • the sprayer is also intended as usual in conventional sprayers, a mixing of the preferably hydraulic binder, for. As lime and / or cement, the additive and the blowing agent allow.
  • the sprayer according to the invention ensures this, with the method can be readjusted in the laboratory.
  • the claimed sprayer allows easy simulation of the dispensing process and quick and easy cleaning.
  • the additive may be a cure accelerator or any other additive.
  • the mixer may comprise a propellant conduit for transporting the propellant from the fluid source to the nozzle, the propellant conduit comprising at least a first junction for the at least one additive and at least one second confluence for the binder, in particular the cement, the at least one first confluence is arranged upstream of the second junction.
  • the propellant conduit comprising at least a first junction for the at least one additive and at least one second confluence for the binder, in particular the cement, the at least one first confluence is arranged upstream of the second junction.
  • the sprayer may comprise at least a third junction for introducing a cleaning liquid into the mixer, in particular into at least a portion of the blowing agent line. It is thus possible, after a test or simulation run, in which a certain dispensing mixture is dispensed, to clean the entire spray device, in particular the mixer, by means of the cleaning liquid (eg water). In this respect, it is possible to carry out various tests at low cost and iteratively to determine a suitable mixture for certain applications. Furthermore, the reaction behavior of the shotcrete can be analyzed depending on certain parameters (eg temperature, additives used, etc.).
  • the sprayer may be equipped with at least two additive dispensers so that they deliver a first and a second additive. It is advantageous if tests can be carried out in which differing additives can be introduced into the dispensing mixture at the same time or with a time delay.
  • the at least one additive dispensing device may comprise at least one chamber and at least one piston for dispensing the respective additive.
  • the piston can be driven for example by a linear drive.
  • a sensor can be provided which determines the stroke or the stroke difference of the piston in order to determine the discharge quantity on the basis of this information.
  • a corresponding determination of the delivery quantity can be made, for example, via a control device.
  • the controller may also be used to determine a flow rate of the dispensed additive.
  • the at least one additive dispensing device may comprise a receiving device for, in particular interchangeable, receiving a cartridge.
  • the additive dispensing device is thus adapted to receive cartridges that can be changed quickly and easily. In this respect, different additives can be used for different tests, without having to carry out cleaning of chambers provided for this purpose of the additive dispensing device.
  • the at least one additive dispensing device and / or the binder dispensing device, in particular the cement dispensing device, may comprise at least one linear drive (eg screw jack, linear motor, etc.) for dispensing the cement or the additive.
  • a linear drive eg screw jack, linear motor, etc.
  • the binder delivery device may comprise at least one binder receiving device, in particular a funnel, and at least one cylinder, wherein the cylinder is in fluid communication with the binder receiving device. In this way it can be ensured that the cylinder receives a predetermined amount of binder from the binder receiving device and releases it during an experiment. In this respect, mixing ratios can be precisely determined and / or adjusted.
  • the spraying device may comprise a control device which is preferably used to control at least the binder delivery device and / or the at least one additive delivery device and / or the compressor and / or one of the Fluid source associated valve is formed.
  • a control device which is preferably used to control at least the binder delivery device and / or the at least one additive delivery device and / or the compressor and / or one of the Fluid source associated valve is formed.
  • a user may specify certain mixing ratios and / or flow rates, which are then translated by the controller into a corresponding control algorithm.
  • the controller may additionally or alternatively be configured to calculate a discharge amount or flow rate of the additive delivery device based on values related to a piston stroke of the additive delivery device. For example, in a calibration process, the piston may be moved a predetermined distance and the delivered amount weighed. On the basis of the measurement result, the discharge quantity can be determined in relation to the piston stroke. Alternatively, the controller may be aware of the volume of the entire chamber and the maximum and minimum piston strokes so that the dispensing amount can be determined without calibration. With a corresponding control device can be dispensed with sensors within the line system. On the one hand, these are difficult to clean and, on the other hand, they are inaccurate for small quantities.
  • the control device may comprise a memory device for storing calibration data.
  • This calibration data can be stored and taken into account when executing a control algorithm.
  • the calibration makes it possible to maintain a precisely specified mixing ratio and / or a precisely predetermined flow rate.
  • the binder delivery device is designed to dispense a binder-water mixture, in particular a cement-water mixture, instead of the binder.
  • a subsequent addition of water can be avoided.
  • the dispensing mixture eg. As a mortar or similar suspension, it is possible to already put the binder with water before adding appropriate additives. Complex mixing of liquid within the mixer and / or at the nozzle can be avoided.
  • the spray application can be done with a predetermined pressure.
  • Fig. 1 shows the schematic structure of a spray device according to the invention with a cement dispensing device and additive dispensing device;
  • Fig. 2 shows the detailed configuration of the additive dispensing device
  • Fig. 1; Fig. 3 shows the detailed configuration of the cement dispensing device
  • FIG. 4 shows a control device for controlling the spray device from FIG. 1.
  • Fig. 1 shows individual components of a spray device according to the invention.
  • a compressor 10, a binder dispenser, namely a cement dispenser 20, and a hardener dispenser 30 are in fluid communication via a branched supply pipe 101.
  • the supply pipe 101 opens into a nozzle 102, which allows the sprayer 100 to deliver a dispensing mixture.
  • the compressor 10 is configured to dispense a propellant that effectively expels the dispensing mixture from the sprayer 100 at a predetermined rate. In this respect, the compressor 10 is substantially responsible for the speed with which the dispensing mixture exits the nozzle 102.
  • the cement dispenser 20 provides a binder, cement or mixture of cement and water. This mixture is forced into the supply pipe 101 due to a cement piston pump 24 provided in the cement discharge device 20 (see Fig. 3) and accelerated by the blowing agent. Before the blowing agent (eg, compressed air) is mixed with the cement, the blowing agent is mixed with an additive, preferably a hardening accelerator, which is output from the additive delivery device 30. To output the additive, a corresponding pump with a linear drive is also provided in the additive dispensing device 30.
  • an additive preferably a hardening accelerator
  • Fig. 1 is a purely schematic representation. Theoretically, it would be possible to mix the dispensing mixture only within the nozzle 102. In this respect, the individual distances in which the junctions of the additive delivery device 30, the compressor 10 and the cement delivery device 20 are provided can vary widely.
  • the additive delivery device 30 has a piston 32 and a cylinder with a piston chamber 36, which receives the piston 32. At the end of the piston chamber 36 is an outlet 35 is provided which is in fluid communication with the supply pipe 101.
  • the additive dispenser 30 includes a linear motor 31 that can move the piston 32 within the piston chamber 36. Piston 32, cylinder and linear motor 31 form a piston pump. When the piston 32 is moved toward the outlet 35, the additive delivery device 30 discharges an additive located in the piston chamber 36.
  • the additive delivery device 30 as shown in FIG. 2 in such a way that the piston chamber 36 directly receives a corresponding additive.
  • the additive dispenser 30 may be configured to receive and act upon a cartridge with the additive by means of the piston 32 or any other means so that the contents of the cartridge, particularly from the outlet 35, exit.
  • FIG. 3 shows a schematic cross section through the cement dispenser 20 of FIG. 1.
  • a piston chamber 26 is provided within which a corresponding piston 22 can move.
  • This piston 22 is driven by a linear motor 21.
  • the mentioned components form a cemented piston pump 24.
  • the cement delivery device 20 has a cement tank 27, which is in fluid communication with the outlet 25 of the piston chamber 26 via a T-tube 23.
  • the T-tube 23 further connects to the supply pipe 101.
  • check valves are provided, which make it possible to suck cement or a cement-water mixture from the cement tank 27 into the piston chamber 26 of the cement piston pump 24.
  • the piston of the cemented piston pump 24 moves away from the outlet 25 in the course of this suction process.
  • the cement dispenser 20 may be used to introduce cement or a cement-water mixture into the supply pipe 101. This discharge occurs via the outlet 35, into the T-tube 23 and then into the supply tube 101.
  • a corresponding valve prevents the return of the cement or mixture into the cement tank 27.
  • Fig. 4 shows a schematic representation of a control device 60, which is designed to control the spraying device 100 according to the invention.
  • This control device 60 has a memory 65, which is designed to store program data and calibration data. Furthermore, an input device 62 and an output device 61 are provided which allow interaction with a user.
  • the controller 60 is in communication with the linear motors 21, 31 of the cement dispenser 20 and the additive dispenser 30, respectively, and controls them appropriately. In effect, the controller 60 allows the user to enter a particular mixing ratio of cement and additive and an exit velocity of the dispensing mixture. Based on the calibration data, the control device 60 can determine how the linear motors 21, 31 are to be actuated, so that the predetermined mixing ratio is converted. Furthermore, there is a communicative connection to the compressor 10 so that the controller 60 can also adjust the flow rate of the propellant.
  • the sprayer 100 has only one additive dispenser 30.
  • further additive dispensing devices 30 can be provided, which introduce further additives into the supply tube 101.
  • a corresponding introduction can take place separately from the other additives or in conjunction with them.
  • a separate piping system may be provided for the additive dispensers 30 that allow mixing prior to entry into the supply pipe 101.
  • a mixture of the additives take place only in the supply pipe 101.
  • the controller 60 may develop a corresponding control strategy as required.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles (AREA)

Abstract

La présente invention concerne un appareil de projection pourvu d'une buse pour distribuer un mélange. De tels appareils de projection sont utilisés pour appliquer du béton projeté (mortier/ciment) sur des surfaces. L'appareil de projection selon l'invention doit permettre d'effectuer plus facilement des essais ou des expériences avec du béton projeté. À cet effet, l'appareil de projection comprend: au moins un dispositif de distribution de liant (20) pour distribuer un liant, en particulier du ciment ou du mortier; au moins un dispositif de distribution d'additif (30) pour distribuer au moins un additif; au moins une source de fluide, en particulier un compresseur (10), pour fournir un agent d'expansion; au moins un mélangeur pour mélanger le liant, l'additif et l'agent d'expansion, le mélangeur étant conçu pour produire un prémélange comprenant l'agent d'expansion et l'additif et pour mélanger le prémélange avec le liant.
PCT/EP2012/065482 2011-08-09 2012-08-07 Appareil de projection et procédé d'analyse d'un mélange distribué Ceased WO2013020990A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP20110177017 EP2556934B1 (fr) 2011-08-09 2011-08-09 Appareil de pulvérisation et procédé destiné à l'analyse d'un mélange de gaz d'échappement
EP11177017.8 2011-08-09

Publications (1)

Publication Number Publication Date
WO2013020990A1 true WO2013020990A1 (fr) 2013-02-14

Family

ID=46642529

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/065482 Ceased WO2013020990A1 (fr) 2011-08-09 2012-08-07 Appareil de projection et procédé d'analyse d'un mélange distribué

Country Status (3)

Country Link
EP (1) EP2556934B1 (fr)
ES (1) ES2461995T3 (fr)
WO (1) WO2013020990A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2521879A (en) * 2014-03-21 2015-07-08 Bacement Ltd A method of forming concrete

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110895375B (zh) 2018-09-13 2020-12-22 江苏集萃智能液晶科技有限公司 一种柔性的双稳态调光器件

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990011877A1 (fr) * 1989-03-31 1990-10-18 Aliva Aktiengesellschaft Convertisseur de jets de beton
WO1996001700A1 (fr) * 1994-07-11 1996-01-25 Reno And Son, Inc. Procede d'application d'un materiau refractaire coulable a basse teneur en ciment
DE4444405A1 (de) 1994-12-14 1996-06-20 Pro Aqua Geraete Gmbh Spritzbetonstrahler
CH690758A5 (de) * 1995-03-28 2001-01-15 Mbt Holding Ag Vorrichtung, Anlage und Verfahren zum Beimischen eines flüssigen Zusatzstoffes zu einer fliessfähigen Grundmasse.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990011877A1 (fr) * 1989-03-31 1990-10-18 Aliva Aktiengesellschaft Convertisseur de jets de beton
WO1996001700A1 (fr) * 1994-07-11 1996-01-25 Reno And Son, Inc. Procede d'application d'un materiau refractaire coulable a basse teneur en ciment
DE4444405A1 (de) 1994-12-14 1996-06-20 Pro Aqua Geraete Gmbh Spritzbetonstrahler
CH690758A5 (de) * 1995-03-28 2001-01-15 Mbt Holding Ag Vorrichtung, Anlage und Verfahren zum Beimischen eines flüssigen Zusatzstoffes zu einer fliessfähigen Grundmasse.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2521879A (en) * 2014-03-21 2015-07-08 Bacement Ltd A method of forming concrete
GB2521879B (en) * 2014-03-21 2016-02-10 Bacement Ltd A method of forming concrete

Also Published As

Publication number Publication date
EP2556934B1 (fr) 2014-04-16
EP2556934A1 (fr) 2013-02-13
ES2461995T3 (es) 2014-05-22

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