EP3079872B1 - Misch- und förderanlage für trockenbaustoffe aus einem vorratssilo - Google Patents

Misch- und förderanlage für trockenbaustoffe aus einem vorratssilo Download PDF

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Publication number
EP3079872B1
EP3079872B1 EP14830873.7A EP14830873A EP3079872B1 EP 3079872 B1 EP3079872 B1 EP 3079872B1 EP 14830873 A EP14830873 A EP 14830873A EP 3079872 B1 EP3079872 B1 EP 3079872B1
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EP
European Patent Office
Prior art keywords
mixing
buffer container
conveying
dry construction
container
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
EP14830873.7A
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German (de)
English (en)
French (fr)
Other versions
EP3079872A1 (de
Inventor
Josef Scherer
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.)
S&P Clever Reinforcement Co AG
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S&P Clever Reinforcement Co AG
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Publication date
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Publication of EP3079872A1 publication Critical patent/EP3079872A1/de
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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
    • B28C5/1276—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 with consecutive separate containers with rotating stirring and feeding or discharging means
    • B28C5/1284—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 with consecutive separate containers with rotating stirring and feeding or discharging means having a feeding hopper and consecutive vertical or inclined mixing container fed at its upper part
    • 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
    • B01F23/50—Mixing liquids with solids
    • B01F23/54—Mixing liquids with solids wetting solids
    • 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
    • B01F27/114—Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections
    • B01F27/1145—Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections ribbon shaped with an open space between the helical ribbon flight and 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
    • B01F27/60—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
    • 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
    • B01F27/92—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with helices or screws
    • 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
    • B01F27/92—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with helices or screws
    • B01F27/923—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with helices or screws the material flowing continuously through the receptacle
    • 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
    • B01F35/71775—Feed mechanisms characterised by the means for feeding the components to the mixer using helical screws
    • 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
    • B01F35/752—Discharge mechanisms with arrangements for converting the mechanism from mixing to discharging, e.g. by either guiding a mixture back into a receptacle or discharging it
    • 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
    • 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
    • B28C5/1276—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 with consecutive separate containers with rotating stirring and feeding or discharging means
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
    • 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
    • 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
    • B01F23/50—Mixing liquids with solids
    • B01F23/565—Mixing liquids with solids by introducing liquids in solid material, e.g. to obtain slurries

Definitions

  • This invention relates to a mixing and conveying system for dry building materials for building purposes. These dry building materials are temporarily stored in a storage silo at the construction site and obtained from it, mixed with water and pumped, and then conveyed through a hose until the mixture subsequently emerges from a nozzle and is applied to a structure. For this purpose, compressed air is added to the spray nozzle so that the pumped mortar can be torn open and sprayed.
  • the dry building materials namely sand, lime, cement, additives and additives with a minimum moisture content of less than 0.3% water
  • worm pumps are mainly used below the storage silo, that is, below a closing flap for the thick-flow conveying of the dry building materials.
  • a horizontal drive shaft is equipped with a worm that rotates in a tube so that it forms a horizontal Archimedes screw. Mixing water is added to this tube in the required amount, and then the dry building materials are mixed with the water in this tube.
  • the screw acts as a mixer and a pump at the same time, and it conveys the mixture directly into a pump hose that leads to the spray nozzle.
  • the mixing of the mortar with the mixing water thus takes place in this short screw and therefore only during relatively short time until the mixture is conveyed out of the screw.
  • the continuity of the mixing process is determined by the speed of rotation, the length and the pitch of the screw on the drive shaft.
  • a long mixing time 90 to 180 seconds is required. If this mixing time is not adhered to, the polymers in the mortar cannot be broken up or cannot be broken down sufficiently. This affects the quality of the end product, i.e. the mortar mixture.
  • the conventional, combined mixing-pump screws the required mixing time is often not achieved. The snails are too short. Mixing is therefore not optimal and its parameters cannot be varied, at most the speed of the screw, which is insufficient.
  • German published application shows 2 166 509 in the figure a mixing and conveying system in which (from left to right) a screw conveyor first serves a mixer with paddles. The mixed concrete falls from this mixer into a second screw conveyor and from there into another paddle mixer.
  • the screw conveyor which pumps the shotcrete into the hose, is arranged below it.
  • DE 299 11 546 and EP 0 574 728 A1 show a mixing container in the form of a standing cylinder with a spiral therein.
  • the feed pump for the hose connects axially at the bottom.
  • the object of the invention is to create a mixing and conveying system for dry building materials from a storage silo, which firstly has an arbitrarily adjustable mixing time from the Storage silo conveyed quantity allows, so that the highly refined mortar can be given the time required for the polymers contained in it to break down, in order to achieve an optimal mortar mixture, and secondly, stiffening can also be avoided in the event of interruptions in conveying.
  • the mixing and conveying system should allow the conveying process to be interrupted without further ado, without fear of stiffening of the mortar mixed with water, but rather that the conveying of the mixed mortar can be resumed after an interruption.
  • a mixing and conveying system for dry building materials which can be obtained from a storage silo by means of an openable and closable closure flap, with a drivable screw conveyor, which is arranged in a pipe and is located below the closure flap, for the removal of dry construction material, and so on characterized in that this screw conveyor is followed by a mixing and buffer container with a connection for water addition and an internal, drivable agitator, and the mixing and buffer container runs down into a trough or a cone and into a pipe with a pump screw conveyor its own drive opens, via which the mortar mixture worked up in the mixing and buffer container can be conveyed into the pump hose, the content of the mixing and buffer container being at least 1.5 times the maximum minute capacity of the pump conveyor screw.
  • FIG. 1 a conventional mixing and conveying system is shown schematically.
  • the storage silo 1 here tapers towards the bottom and the contents are thus guided towards a pouring spout 2, which is equipped with a closure flap 3 for the metered dispensing of dry building materials.
  • a closure flap 3 for the metered dispensing of dry building materials.
  • the flap 3 When the flap 3 is opened, the dry building materials are poured into the pipe 17 with the mixing and conveying screw 4.
  • This mixing and conveying screw 4 is driven by an electric motor 7.
  • a filler neck 8 is formed in the rear area of the tube 17, in which the mixing and conveying screw 4 rotates. As indicated by the arrow, water can be added here.
  • mixing is carried out and the mixed mortar is pressed directly into the hose 5 and pumped therein until it reaches the nozzle 6. Compressed air is added there, as indicated by arrow 9, so that the mortar tears open and can be sprayed.
  • the problem with such a mixing and conveying system is that the mixing and conveying process cannot be adjusted. Only the speed of the mixing and conveying screw 4 can be varied, but this is not sufficient. In As a result, modern, highly modified mortar mixed with polymers is not mixed sufficiently intimately and the polymers cannot be broken down at all and their function in the mortar cannot therefore develop fully. Ultimately, this causes late effects in the form of construction defects in the mortar layer of a building.
  • the time period of the mixture with such a system is usually only a maximum of 20 seconds. To achieve a sufficiently homogeneous mixture, which also ensures that the added polymers are fully digested in the mortar, the mixing time should be at least 90 to 180 seconds.
  • the mortar stuck in the hose 5 must be removed from the hose with water and compressed air, and the hose must be flushed and cleaned, which is basically possible due to the elasticity of the hose, but is labor-intensive, as is the disassembly and assembly of the mixing and screw conveyor 4 is complex. Interrupting the spraying work with this mixing and conveying system is always associated with the risk that the work cannot be restarted without problems.
  • FIG. 2 A first embodiment of the mixing and conveying system according to the invention is shown in Figure 2 also shown schematically.
  • this mixing and conveying system has a separate mixing and buffer container 18, in which, as the name suggests, the mortar is mixed by mixing. Its volume is at least 1.5 times that Minute delivery rate of the pump screw 14 at its lower end. Typical delivery rates of these pump screw conveyors 14 are approximately 30 to 40 liters per minute, with a delivery rate of 50 liters per minute being achieved at a maximum speed of 400 rpm with full engine power, but this is in practice bought.
  • the mixing and buffer container 18 then preferably has a volume of approximately 60 liters.
  • this mixing and buffer container 18 is a standing cylinder, which tapers down towards a mouth at the bottom and is shown half-open in the drawing, that is to say with the front cylinder wall omitted, in order to provide a view inside.
  • a helix 20 is tracked along the inner wall of the cylindrical container, but is not connected to the inner wall. The outer edge of the helix 20 can be guided along a helix along the inner wall of the cylindrical mixing and buffering container 18, so that it has a constant slope over its length.
  • a central axis 19 leads axially from an electric motor 13 through the cylindrical mixing and buffer container 18.
  • This axis 19 is connected to the coil 20 via a number of fixed and stable webs 22, so that this is also set in rotation by rotating the axis 19 can.
  • the axis 19 is held in a bearing 21 for stabilization.
  • Ready-to-use mortar for spraying can be obtained from this mixing and buffer container 18, for which purpose the mixing container and buffer container 18 opens into a pipe 15 with a pump screw conveyor 14. If this is operated, operated by a separate motor 16, it pumps spray mortar into the pump hose 5. To interrupt the pumping, the pump feed screw 14 is run backwards. It thus conveys the mortar stuck in the pipe 15 and continuously presses it upwards into the mixing and buffer container 18.
  • the system is operated as follows. First, the closure flap 3 of the discharge chute 2 of the storage silo 1 is opened, so that dry building material falls through the discharge chute 2 into the pipe 17 with the screw conveyor 4.
  • the screw conveyor 4 is driven by the electric motor 7 and shifts the dry building material in the picture to the right into the mixing and buffer tank 18. Only now is water metered in through the filler neck 8 according to the amount of dry building material supplied. The amount of dry building material is in a certain ratio to the running time of the screw conveyor 4. This allows the water to be metered in with sufficient accuracy. From now on, the dry building material in the mixing and buffer container 18 is mixed with the water by rotating the spiral mixer inside the mixing and buffer container 18.
  • a mixing time of 90 seconds is maintained in any case, because the material located in the lower conical inlet is captured by the helix 20 and conveyed to the top and must then cascade down over the webs 22, which is repeated several times.
  • the mixing and buffering container 18 is initially filled to a large extent, then mixed and then buffered for a while, for example for 90 to 180 seconds or for several minutes. From now on, the mixed mortar can be conveyed away below via the pump conveyor screw 14 and conveyed into the pump hose 5, while the same quantity of dry building material and water is supplied at the top for uniform conveying, for ongoing processing or mixing and subsequent buffering. With this system, the mixing process is separated from the delivery into the subsequent pump hose 5 from the addition of water. This means that the mixing process continues continuously, even if the screw conveyor 4 is switched off for the supply of dry building material, and the separate pump screw conveyor 14 is run backwards to interrupt the pumping.
  • FIG 3 an alternative embodiment of the device is shown with a mixing and buffer container 10 in the form of a lying drum.
  • An axis runs horizontally through this mixing and buffer container 10 and carries radially projecting paddles 11 with blades as paddle ends.
  • This axis 12 is driven by a separate, own motor 13. As long as this motor 13 is running, the axis 12 is rotated and the paddles 11 agitate the mortar inside the mixing and buffer container 10 wetly and continuously, so that stiffening does not occur.
  • the content of the mixing and buffer container 10 is at least twice as large as that of the upstream tube 17 with the screw conveyor 4 from which the mixing and buffer container 10 is loaded.
  • a large buffer can also be generated, so that a sufficient mixing time is always achieved, and at the same time the system can continue to run without the spraying of mortar for the pure mixing or buffering, and thus stiffening of the mortar the system is avoided.
  • the water is fed directly into the mixing and buffer container 10 through the nozzle 8 on its top.
  • the mixing and buffer container 10 runs out into a tub, which at the same time forms the tube 15 of a pump feed screw 14, and this is driven by its own motor 16.
  • the tube 15 of this screw conveyor 14 opens into the hose 5 and this ends with a nozzle 6, in which compressed air can be added, as indicated by the arrow 9.
  • FIG 4 is the mixing and buffer container 10 as shown in Figure 3 shown in this drawing from the right when looking at the system, namely in a section through the plane of the dashed line A in Figure 3 ,
  • the mixing and buffer container 10 is semicircular in shape at the bottom, thus forming a tub.
  • the axis 12, on which the paddles 11 are arranged radially, extends through the mixing and buffer container 10.
  • the paddles 11 are equipped with blades 23, which are preferably arranged at an oblique angle with respect to the paddles 11. They turn counterclockwise in the illustration shown.
  • the mixing and buffer container 10 opens into a smaller tub, which forms the tube 15 of the pump feed screw 14, which conveys wet.
  • the pump conveyor screw 14 which is only responsible for conveying or pumping the mixed mortar through the hose 5
  • the pump conveyor screw 14 can be switched off immediately , If necessary, it can also be run in the opposite direction. It then pushes the mortar up into the mixing and buffer container 10 at its rear end, because this cannot escape anywhere else. In the mixing and buffer container 10, however, it is continuously grasped and stirred by the blades 23 of the paddles 11, as a result of which it cannot stiffen or even harden or harden.
  • the closure flap 3 of the storage silo 1 is also closed.
  • the dry building material and mortar still in the screw conveyor 4 is still conveyed into the mixing and buffer container 10 and mixed with water therein until the pipe 17 with the screw conveyor 4 is empty.
  • the mortar conveyed into the mixing and buffer container 10 remains in the mixing and buffer container 10 and is constantly stirred until the spraying is started again.
  • the screw conveyor 4 can be switched off. During a longer interruption, only the paddles 11 in the mixing and buffering container 10 are kept in motion, or, if necessary, the pump conveyor screw 14 is also run in the counter-conveying direction.
  • the mixing and buffer container 10 can in any case hold the contents of the screw conveyor 4 and a sufficient mixing time is ensured in it, it is at least 1.5 times as large as the minute delivery capacity of the pump screw conveyor 14, or even greater if a large buffer of mixed mortar is required. With this system, work interruptions are significantly reduced. Thanks to this system, material losses can also be reduced by barely throwing away any more mortar because it stiffens.
  • the mixing and buffer container 10, 18 also serves, in principle, as an additional mixing device to ensure an extended mixing time, but at least a mixing time of 90 seconds, although a longer mixing time can also be guaranteed at any time. It takes at least 90 seconds until dry building material, which falls from the storage silo 1 into the screw conveyor 4, is conveyed through this into the mixing and buffer container 10, 18, the mortar is further mixed therein and finally is picked up by the pump screw conveyor 14 below and this is pumped into the hose 5.
  • the system can be run even more slowly, or the pump screw conveyor 14 can even be stopped now and then or run in the opposite direction in order to first mix the mixture particularly intimately in the mixing and buffer container 10 ,
  • the mixing time is anyway more than 90 seconds, if necessary 180 seconds, and this ensures the reliable disintegration of all polymers contained in a highly modified polymer-based mortar.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
EP14830873.7A 2013-12-10 2014-12-04 Misch- und förderanlage für trockenbaustoffe aus einem vorratssilo Active EP3079872B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH02051/13A CH708983B1 (de) 2013-12-10 2013-12-10 Misch- und Förderanlage für eine Mörtelmischung.
PCT/IB2014/066596 WO2015087214A1 (de) 2013-12-10 2014-12-04 Misch- und fördeanlage für trockenbaustoffe aus einem vorratssilo

Publications (2)

Publication Number Publication Date
EP3079872A1 EP3079872A1 (de) 2016-10-19
EP3079872B1 true EP3079872B1 (de) 2019-12-25

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EP14830873.7A Active EP3079872B1 (de) 2013-12-10 2014-12-04 Misch- und förderanlage für trockenbaustoffe aus einem vorratssilo

Country Status (7)

Country Link
US (1) US10427323B2 (pt)
EP (1) EP3079872B1 (pt)
CH (1) CH708983B1 (pt)
DK (1) DK3079872T3 (pt)
ES (1) ES2778523T3 (pt)
PT (1) PT3079872T (pt)
WO (1) WO2015087214A1 (pt)

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IT202200002318A1 (it) * 2022-02-09 2023-08-09 Csp S R L Apparecchiatura di alimentazione continua per la stampa 3d di materiali fluido densi
CN115890908A (zh) * 2023-01-06 2023-04-04 中建八局第二建设有限公司 一种建筑施工原料混合装置
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WO2015087214A1 (de) 2015-06-18
DK3079872T3 (da) 2020-03-23
US10427323B2 (en) 2019-10-01
PT3079872T (pt) 2020-03-25
CH708983B1 (de) 2017-12-29
US20170008193A1 (en) 2017-01-12
EP3079872A1 (de) 2016-10-19
ES2778523T3 (es) 2020-08-10
CH708983A2 (de) 2015-06-15

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