EP3659699B1 - Système pour l'application d'un matériau de construction - Google Patents

Système pour l'application d'un matériau de construction Download PDF

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Publication number
EP3659699B1
EP3659699B1 EP19208375.6A EP19208375A EP3659699B1 EP 3659699 B1 EP3659699 B1 EP 3659699B1 EP 19208375 A EP19208375 A EP 19208375A EP 3659699 B1 EP3659699 B1 EP 3659699B1
Authority
EP
European Patent Office
Prior art keywords
drum
mixer
component
stirring shaft
conveying device
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.)
Active
Application number
EP19208375.6A
Other languages
German (de)
English (en)
Other versions
EP3659699A3 (fr
EP3659699A2 (fr
Inventor
Patrik Kuhn
Armin Brühwiler
Raphael Bourquin
Didier Lootens
Luka OBLAK
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
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Filing date
Publication date
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Publication of EP3659699A2 publication Critical patent/EP3659699A2/fr
Publication of EP3659699A3 publication Critical patent/EP3659699A3/fr
Application granted granted Critical
Publication of EP3659699B1 publication Critical patent/EP3659699B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B28C5/14—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 the stirrers having motion about a horizontal or substantially horizontal axis
    • B28C5/148—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 the stirrers having motion about a horizontal or substantially horizontal axis the stirrer shaft carrying a plurality of radially extending mixing bars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
    • B01F27/70—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/60—Mixing solids with solids
    • B01F23/64—Mixing solids with solids using rotatable mixing elements at the lower end of discharge hoppers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/07—Stirrers characterised by their mounting on the shaft
    • B01F27/072—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis
    • B01F27/0724—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis directly mounted on the rotating axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/07—Stirrers characterised by their mounting on the shaft
    • B01F27/072—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis
    • B01F27/0725—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis on the free end of the rotating axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/07—Stirrers characterised by their mounting on the shaft
    • B01F27/072—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis
    • B01F27/0726—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis having stirring elements connected to the stirrer shaft each by a single radial rod, other than open frameworks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/112—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/112—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades
    • B01F27/1121—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades pin-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/19—Stirrers with two or more mixing elements mounted in sequence on the same axis
    • B01F27/192—Stirrers with two or more mixing elements mounted in sequence on the same axis with dissimilar elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/21—Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by their rotating shafts
    • B01F27/2123—Shafts with both stirring means and feeding or discharging means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
    • B01F27/72—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with helices or sections of helices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms 
    • 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
    • B01F35/71—Feed mechanisms
    • 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
    • B01F35/71—Feed mechanisms
    • B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
    • B01F35/7173—Feed mechanisms characterised by the means for feeding the components to the mixer using gravity, e.g. from a hopper
    • B01F35/71731—Feed mechanisms characterised by the means for feeding the components to the mixer using gravity, e.g. from a hopper using a hopper
    • 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
    • B01F35/75—Discharge mechanisms
    • B01F35/754—Discharge mechanisms characterised by the means for discharging the components from the mixer
    • B01F35/75455—Discharge mechanisms characterised by the means for discharging the components from the mixer using a rotary discharge means, e.g. a screw beneath the receptacle
    • B01F35/754551—Discharge mechanisms characterised by the means for discharging the components from the mixer using a rotary discharge means, e.g. a screw beneath the receptacle using helical screws
    • 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
    • B28B1/001—Rapid manufacturing of 3D objects by additive depositing, agglomerating or laminating of material
    • 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
    • B28C5/0806—Details; Accessories
    • B28C5/0818—Charging or discharging gates or chutes; Sealing means
    • 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
    • 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
    • B28C5/14—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 the stirrers having motion about a horizontal or substantially horizontal axis
    • B28C5/142—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 the stirrers having motion about a horizontal or substantially horizontal axis the stirrer shaft carrying screw-blades
    • B28C5/143—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 the stirrers having motion about a horizontal or substantially horizontal axis the stirrer shaft carrying screw-blades for materials flowing continuously through the mixing device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/28—Mixing cement, mortar, clay, plaster or concrete ingredients

Definitions

  • the present invention relates to a system for applying a building material.
  • mixers with a drum are conventionally used, in which a stirring shaft is arranged, which can be driven by a drive.
  • the stirring shaft can be equipped with pins, for example, so that the mixing material is moved and mixed when the stirring shaft rotates.
  • a mixer is described, for example, in the published patent application WO 2007/066362 A1 shown.
  • the material to be mixed is fed into the drum via an inlet, where it is mixed by pins on the agitator shaft, and finally discharged from the drum again via a side outlet.
  • the pins on the agitator shaft of such a mixer can be designed and arranged in such a way that the mixed material is moved by the pins in a predetermined direction in the drum.
  • a movement of the mixed material through the mixer drum only works sufficiently well with certain viscosities of the mixed material.
  • the conveyance of the mixed material to an outlet of the mixer in such a system is insufficient. This has the consequence that the mixer can become clogged and its function is impaired.
  • One object of the present disclosure is therefore to avoid the disadvantages of the known devices.
  • the aim is to provide a mixer which can continuously mix and convey substances with a higher viscosity.
  • the mixer should also be easy to handle and cost-effective to operate.
  • the object is initially achieved by a mixer comprising a drum with at least one inlet and one outlet.
  • the mixer further comprises a drive and a stirring shaft for mixing a mixture, wherein the stirring shaft arranged in the drum is coupled to the drive.
  • the mixer comprises Mixer a conveying device which is arranged in the drum and which is arranged on the same axis as the stirring shaft.
  • This solution offers the advantage that it also allows mixing materials with a higher viscosity to be continuously mixed and conveyed. For example, when mixing pumpable concrete with concrete additives, it is desirable for the mixing material to reach a certain viscosity so that it can be used directly to produce a concrete structure.
  • a conveying device in the mixer also allows the material to be mixed to be conveyed continuously and directly from an inlet of the drum to an outlet of the drum for such applications, without the mixer being blocked by mixing materials with a higher viscosity and thus failing to function.
  • the conveying device is arranged directly adjacent to the agitator shaft, so that the mixture mixed by the agitator shaft can be directly grasped by the conveying device and conveyed out of the drum through the outlet.
  • the agitator shaft is fitted with pins so that when the agitator shaft rotates, the mixed material in the drum is moved by the pins.
  • Such stirring shafts with pins are particularly suitable for mixing components with large grain sizes, for example grain sizes of 2 to 10 mm.
  • Such a mixer is also suitable for mixing asymmetrical materials such as mixed goods with fiber additives (e.g. carbon fibers, metal fibers or plastic fibers).
  • fiber additives e.g. carbon fibers, metal fibers or plastic fibers.
  • the agitator shaft is not equipped with pins, but is designed, for example, as a spiral agitator, disk agitator or inclined blade agitator.
  • the conveying device and the agitator shaft are arranged on the same drive shaft, whereby this drive shaft can be driven by the drive.
  • the conveying device and the agitator shaft are arranged on two separate drive shafts, the conveying device being arranged on a first drive shaft and the agitator shaft on a second drive shaft, so that the conveying device and agitator shaft can be driven at different speeds.
  • Such an arrangement has the advantage that the mixing and conveying of the mixed material can be adjusted separately from one another. In this way, optimal mixing and conveying for the respective purpose can be achieved through a specifically adjustable mixing performance and conveying performance. For example, for a first application, low mixing with a high conveying performance and/or conveying at high pressure can be advantageous, and for a second application, strong mixing with a low conveying performance and/or conveying at low pressure can be advantageous.
  • the agitator shaft and the conveyor device are arranged next to each other in the drum, wherein the agitator shaft is arranged on a first drum section and the conveyor device on a second drum section, and wherein the inlet is arranged on the first drum section and the outlet are arranged on the second drum section.
  • the first drum section with the agitator shaft arranged therein forms between 50% and 90%, preferably between 60% and 85%, particularly preferably between 70% and 80%, of a volume of the drum. It has been shown that by dividing the drum in this way, an optimal mixing performance can be achieved with a desired conveying capacity of the mixer.
  • the conveying element is designed as a conveyor screw.
  • the conveyor screw has at least one, preferably at least two turns. Such a conveyor screw has the advantage that it can also convey highly viscous mixed materials in the drum and can also be conveyed out of the drum through the outlet with a desired pressure.
  • windings can differ in their extent in the direction of the drive shaft, with the windings becoming narrower towards one end of the conveyor device. This allows a conveying pressure of the conveyor device to be changed depending on the orientation of the constriction of the windings.
  • a cross-section of a shaft of the conveying device can be designed to be variable in the direction of the drive shaft.
  • a volume for the mixed material becomes narrower towards one end of the conveying device.
  • a conveying pressure of the conveying device can be changed depending on the orientation of the narrowing of the volume for the mixed material.
  • the drum In order to mix and convey a first component and a second component, only one inlet or two or more inlets can be arranged on the drum.
  • the components can, for example, be brought together before they are fed into the drum, or the components can be fed into the drum via separate inlets and only mixed in the drum.
  • the agitator shaft and any agitating elements arranged on it, such as pins, can be designed differently.
  • the drum comprises a first inlet and a second inlet, wherein a feed device is arranged at the first inlet.
  • the feed device comprises a funnel for receiving a powdery component, a second drive and a second agitator shaft coupled thereto and arranged in the funnel.
  • the second agitator shaft comprises radially arranged agitator blades which are arranged in an inlet area of the funnel, and the second agitator shaft has an axially aligned agitator rod which is radially offset from a rotational axis of the agitator shaft and which is arranged in an outlet area of the funnel.
  • stirring blades without a stirring rod or a stirring rod without stirring blades can be arranged on the stirring shaft.
  • a component that is fed into the system via the feed device can be fed using a gravimetric method.
  • this has the advantage that the mass of one component fed can be precisely adjusted, which allows a more precise mixing result to be achieved.
  • an additional second conveying device is arranged in the drum on the same axis as the agitator shaft and the conveying device in order to guide a first component introduced into the drum via the inlet away from the inlet before the first component is mixed with further components.
  • a system according to the preamble of claim 1 is made of JP H 0262205 - A known.
  • the system comprises a moving device, a first component and a second component.
  • the system also comprises a mixer for mixing the first component and the second component, the mixer being arranged on the moving device and being movable by it.
  • the first component and the second component can be fed to the mixer to produce the building material.
  • the building material produced from the components can also be applied via the outlet of the mixer.
  • the mixer described here is used as the mixer.
  • Such a system for applying a building material offers the advantage that, for example, building structures can be built efficiently and cost-effectively.
  • the advantage of the arrangement proposed here is in particular that the components are only mixed together shortly before the building material is applied. This is made possible by the fact that the mixer is arranged so that it can be moved via the displacement device, so that it can be brought to the position at which the building material is to be applied.
  • a highly viscous building material such as concrete, can be used in the mixer without this highly viscous building material needs to be further transported or processed.
  • the first component is a pumpable concrete and the second component is a pumpable substance containing a concrete admixture, wherein the concrete admixture is a setting accelerator and/or a hardening accelerator.
  • a pumpable building material and a building material additive offers the advantage that both the pumpable building material and the building material additive can be easily transported from a container to the mixer, whereby the mixing of these two substances creates a highly viscous building material which can be used directly to produce a building structure.
  • the displacement device is designed to be movable in the manner of a 3D printer, so that structures can be built up from the building material by the system.
  • Such systems offer the advantage that entire structures can be made from building materials, such as building walls or similar. No formwork is necessary, and the shape of the structure can therefore be chosen much more freely.
  • the mixer is operated during mixing at a speed of more than 500 revolutions per minute, preferably at a speed of more than 650 revolutions per minute, particularly preferably at a speed of more than 800 revolutions per minute, particularly preferably at a speed of more than 1000 revolutions per minute.
  • pumpable concrete was mixed with setting or hardening accelerators at speeds between 200 and 2000 revolutions per minute. It was found that when mixing at speeds below 500 revolutions per minute, a sufficiently homogeneous or smooth mixture was not achieved, so that the pumpable concrete and the pumpable accelerator did not mix sufficiently with each other. This led to setting or hardening behavior that was difficult to control, since the insufficiently homogeneous mixture had areas with an above-average amount of additive and areas with correspondingly too little additive. This can lead to blockages in the mixer and/or defects in the applied mixture, such as areas with insufficient strength after a certain time after leaving the mixer.
  • pumpable concrete mixed with fibers was mixed with accelerator at different speeds according to the method described above.
  • speeds of over 900 revolutions per minute proved to be advantageous because in addition to the concrete, the fibers also had to be broken up.
  • an average residence time of the mixture in the drum is less than 10 seconds, preferably less than 7 seconds, particularly preferably less than 4 seconds.
  • the average residence time of the mixture in the drum is the length of time that a particle stays in the drum on average (from the inlet of the drum to the outlet of the drum).
  • An above-mentioned advantageous average residence time of a maximum of a few seconds has the advantage that it enables a mix with a high or rapidly increasing viscosity to be pumped, such as pumpable concrete mixed with setting accelerator and/or hardening accelerator.
  • the mixture when applying the mixture, is applied in several layers that are at least partially superimposed.
  • an existing layer is only overlaid with a new layer of the mixture when the existing layer has a sufficiently high strength to maintain its original shape.
  • layers of the mixture are continuously built up, at least partially overlapping each other, so that the structure is constructed from building material in the manner of a 3D printer.
  • Such processes offer the advantage that entire structures can be made from building material, such as building walls or similar.
  • such processes offer the advantage that no formwork is necessary and that the shape of the structure can therefore be chosen much more freely.
  • FIG.1 an exemplary mixer 1 is shown.
  • the mixer 1 has a drive 3, a drum 2, a stirring shaft 4 and a conveying device 5.
  • the drum 2 has two inlets 6 and one outlet 7.
  • the inlets 6 are located in a first drum section 10, in which the stirring shaft is arranged, and the outlet 7 is located on a second drum section 11, in which the conveying device 5 is also arranged.
  • two inlets 6 are arranged on the drum 2.
  • the drum 2 has only one inlet.
  • the components to be mixed can already be brought together before they are conveyed into the drum 2 via the inlet.
  • the conveying device 5 is arranged directly adjacent to the agitator shaft 4, so that the mixed material mixed by the agitator shaft 4 can be directly grasped by the conveying device 5 and conveyed out of the drum 2 through the outlet 7.
  • the conveying device 5 is designed as a conveyor screw.
  • the conveyor screw in this embodiment has two complete turns 9.
  • the conveyor screw can be dimensioned or designed differently.
  • the conveying device 5 and the agitator shaft 4 are arranged on the same axis in the drum 2.
  • the agitator shaft 4 is equipped with pins 8, so that when the agitator shaft rotates, a mixed material in the drum is moved by the pins 8.
  • a feed device 12 is arranged at one of the inlets 6. This feed device 12 is suitable, for example, for introducing a powdery component into the drum 2 of the mixer 1 evenly and without clogging.
  • the feeding device 12 which in Fig.2 is arranged at one of the inlets 6, shown in more detail.
  • the feed device 12 has a second drive 13 and a second stirring shaft 16.
  • the second stirring shaft 16 is arranged so as to be rotatable in a funnel 19.
  • the funnel 19 has an inlet area 14 and an outlet area 15.
  • Stirring blades 17 are arranged on the second stirring shaft in the inlet area of the funnel 19, and a stirring rod 18 is arranged on the second stirring shaft 16 in the outlet area 15 of the funnel 19.
  • the stirring blades 17 are arranged radially on the second stirring shaft so that they can convey a powdery component through the inlet area 14 of the funnel 19.
  • the stirring rod 18 is axially aligned with respect to the second stirring shaft 16 and radially offset from an axis of rotation of the stirring shaft 16. This stirring rod 18 can therefore protect the outlet area 15 of the funnel 19 from becoming blocked.
  • Fig.4 is again shown an exemplary mixer 1 with a feed device 12 at one of the inlets.
  • a first component 20 and a second component 22 are fed to the mixer 1 via a first feed 21 and a second feed 23.
  • the first component 20 can be a powdery component which is fed into the funnel of the feed device 12 via the first feed 21
  • the second component 22 can be, for example, a liquid or a pumpable substance which is fed directly into the drum of the mixer 1 via the second feed 23.
  • the mixture is conveyed by the conveying device 5 through the outlet 25 of the mixer.
  • a system 30 for applying a building material comprises a displacement device 31 as well as a first component 32 and a second component 33.
  • the first component 32 and the second component 33 are fed to the mixer 1 via a first feed 34 and a second feed 35.
  • the mixer 1 comprises an outlet 36 through which the building material can be applied.
  • the mixer 1 can be moved by the displacement device 31.
  • the displacement device 31 can have an arm, as shown in this embodiment, which is designed to be movable.
  • a multi-joint arm can be used to enable a more diverse movement of the mixer 1 in space.
  • the displacement device 31 is designed as a crane, as a robot or as a mobile device on wheels or crawlers. According to the invention, the displacement device is designed as a 3D printer.
  • Fig.6 an exemplary embodiment of a conveying device 5 is shown.
  • windings 9 are initially formed.
  • the windings 9 differ in their extent in the direction of the drive shaft, with the windings 9 becoming narrower towards one end of the conveyor device 5.
  • a cross-section of a shaft of the conveying device 5 is designed to be variable in the direction of the drive shaft.
  • a volume for the mixed material becomes narrower towards one end of the conveying device 5.
  • a conveying pressure of the conveying device 5 can be changed depending on the orientation of the narrowing of the volume for the mixed material.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Accessories For Mixers (AREA)
  • Producing Shaped Articles From Materials (AREA)
  • Rod-Shaped Construction Members (AREA)

Claims (10)

  1. Système (30) permettant d'appliquer un matériau de construction, le système (30) comprenant
    un dispositif de déplacement (31),
    un premier composant (32),
    un deuxième composant (33), et
    un mélangeur (1) pour mélanger le premier composant (32) et le deuxième composant (33), le mélangeur (1) présentant
    un tambour (2) pourvu d'au moins une entrée (6) et d'une sortie (7),
    un dispositif d'entraînement (3),
    un arbre agitateur (4) pour mélanger des produits à mélanger qui sont disposés dans le tambour (2) est qui est couplé au dispositif d'entraînement (3), et
    un dispositif de transport (5) qui est disposé dans le tambour (2) et qui est disposé sur le même axe que l'arbre agitateur (4),
    dans lequel le mélangeur (1) est disposé au niveau du dispositif de déplacement (31) et peut être déplacé par celui-ci,
    dans lequel le premier composant (32) et le deuxième composant (33) peuvent être amenés au mélangeur (1) pour la fabrication du matériau de construction, et
    dans lequel le matériau de construction produit à partir des composants (32, 33) peut être appliqué par l'intermédiaire de la sortie (36) du mélangeur (1), dans lequel le premier composant (32) est du béton pouvant être pompé, et dans lequel le deuxième composant (33) est une substance pouvant être pompée qui contient un adjuvant de béton, dans lequel l'adjuvant de béton est un accélérateur de prise et/ou un accélérateur de durcissement,
    caractérisé en ce que le dispositif de déplacement (31) est réalisé de manière mobile comme une imprimante 3D de sorte que le système (30) peut construire des structures à partir du matériau de construction.
  2. Système (30) selon la revendication 1, dans lequel le dispositif de transport (5) est directement consécutif à l'arbre agitateur (4) de sorte que les produits mélangés par l'arbre agitateur (4) peuvent être saisis directement par le dispositif de transport (5) et peuvent être déplacés hors du tambour (2) à travers la sortie (7).
  3. Système (30) selon l'une quelconque des revendications précédentes, dans lequel le dispositif de transport (5) et l'arbre agitateur (4) sont disposés sur le même arbre d'entraînement, et dans lequel cet arbre d'entraînement peut être entraîné par le dispositif d'entraînement (3).
  4. Système (30) selon l'une quelconque des revendications précédentes, dans lequel l'arbre agitateur (4) et le dispositif de transport (5) sont disposés côte à côte dans le tambour (2), dans lequel l'arbre agitateur (4) est disposé sur une première partie de tambour (10) et le dispositif de transport (5) est disposé sur une deuxième partie de tambour (11), et dans lequel ladite au moins une entrée (6) est disposée sur la première partie de tambour (10) et la sortie (7) est disposée sur la deuxième section de tambour (11).
  5. Système (30) selon la revendication 4, dans lequel la première partie de tambour (10) forme avec l'arbre agitateur (4) disposé dans celle-ci entre 50 % et 90 %, de préférence entre 60 % et 85 %, de manière particulièrement préférée entre 70 % et 80 % d'un volume du tambour (2).
  6. Système (30) selon l'une quelconque des revendications précédentes, dans lequel l'élément de transport (5) est réalisé sous forme de vis sans fin.
  7. Système (30) selon la revendication 6, dans lequel la vis sans fin présente au moins une, de préférence au moins deux spires (9).
  8. Système (30) selon l'une quelconque des revendications précédentes, dans lequel le tambour (2) comprend une première entrée (6) et une deuxième entrée (6), et dans lequel un dispositif d'amenée (12) est disposé à la première entrée (6).
  9. Système (30) selon l'une quelconque des revendications précédentes, dans lequel le mélangeur (1) est conçu pour une vitesse de rotation de plus de 500 tours par minute.
  10. Système (30) selon l'une quelconque des revendications précédentes, dans lequel le système est conçu de telle sorte que lorsque le mélange est appliqué par le dispositif de déplacement (31), un temps de séjour moyen du mélange dans le tambour (2) est de moins de 10 secondes.
EP19208375.6A 2016-03-01 2017-03-01 Système pour l'application d'un matériau de construction Active EP3659699B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP16158056 2016-03-01
EP17707571.0A EP3423178B1 (fr) 2016-03-01 2017-03-01 Mélangeur, système pour appliquer un matériau de construction et procédé pour fabriquer une structure en matériau de construction
PCT/EP2017/054824 WO2017149040A1 (fr) 2016-03-01 2017-03-01 Mélangeur, système pour appliquer un matériau de construction et procédé pour fabriquer une structure en matériau de construction

Related Parent Applications (2)

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EP17707571.0A Division-Into EP3423178B1 (fr) 2016-03-01 2017-03-01 Mélangeur, système pour appliquer un matériau de construction et procédé pour fabriquer une structure en matériau de construction
EP17707571.0A Division EP3423178B1 (fr) 2016-03-01 2017-03-01 Mélangeur, système pour appliquer un matériau de construction et procédé pour fabriquer une structure en matériau de construction

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EP19208375.6A Active EP3659699B1 (fr) 2016-03-01 2017-03-01 Système pour l'application d'un matériau de construction
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JP2022016472A (ja) 2022-01-21
ES2951846T3 (es) 2023-10-25
RU2018125991A (ru) 2020-04-01
CN108698001B (zh) 2022-08-02
US20190047176A1 (en) 2019-02-14
EP3646943A2 (fr) 2020-05-06
KR20180119568A (ko) 2018-11-02
DK3646943T3 (da) 2023-08-14
SG11201807491SA (en) 2018-09-27
EP3423178B1 (fr) 2022-08-17
RU2735761C2 (ru) 2020-11-06
MX2018010452A (es) 2019-03-28
EP3659699A3 (fr) 2020-10-21
AU2017225809B2 (en) 2022-07-21
EP3659699A2 (fr) 2020-06-03
CN108698001A (zh) 2018-10-23
AU2017225809A1 (en) 2018-08-16
JP2019511972A (ja) 2019-05-09
SA518392206B1 (ar) 2023-01-18
PT3646943T (pt) 2023-07-27
EP3646943A3 (fr) 2020-10-14
WO2017149040A1 (fr) 2017-09-08
RU2018125991A3 (fr) 2020-09-01
EP3646943B1 (fr) 2023-05-24
ZA201806381B (en) 2019-07-31
CL2018002448A1 (es) 2018-12-28
BR112018017136A2 (pt) 2019-01-15
KR20220070330A (ko) 2022-05-30
EP3423178A1 (fr) 2019-01-09
CO2018010008A2 (es) 2018-09-28
CA3015856A1 (fr) 2017-09-08
JP7089476B2 (ja) 2022-06-22

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