EP4201625A1 - Verfahren und anlage zur herstellung von beton - Google Patents

Verfahren und anlage zur herstellung von beton Download PDF

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Publication number
EP4201625A1
EP4201625A1 EP22215150.8A EP22215150A EP4201625A1 EP 4201625 A1 EP4201625 A1 EP 4201625A1 EP 22215150 A EP22215150 A EP 22215150A EP 4201625 A1 EP4201625 A1 EP 4201625A1
Authority
EP
European Patent Office
Prior art keywords
conveyor belt
granular materials
storage
hoppers
mixing
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.)
Pending
Application number
EP22215150.8A
Other languages
English (en)
French (fr)
Inventor
David Eloy
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.)
Eloy Beton SA
Original Assignee
Eloy Beton SA
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 Eloy Beton SA filed Critical Eloy Beton SA
Publication of EP4201625A1 publication Critical patent/EP4201625A1/de
Pending 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
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/04—Supplying or proportioning the ingredients
    • B28C7/0481—Plant for proportioning, supplying or batching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/0046—Storage or weighing apparatus for supplying ingredients
    • B28C7/0053—Storage containers, e.g. hoppers, silos, bins
    • B28C7/0061—Storage container plant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/0046—Storage or weighing apparatus for supplying ingredients
    • B28C7/0053—Storage containers, e.g. hoppers, silos, bins
    • B28C7/0069—Storage containers, e.g. hoppers, silos, bins having compartments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/04—Supplying or proportioning the ingredients
    • B28C7/06—Supplying the solid ingredients, e.g. by means of endless conveyors or jigging conveyors
    • B28C7/067—Supplying the solid ingredients, e.g. by means of endless conveyors or jigging conveyors by means of stationary hoppers, chambers or bins from which the material is fed gravitationally, e.g. having agitating means therein

Definitions

  • the present invention relates to a process and an installation for manufacturing concrete.
  • Concrete manufacturing methods comprising a transfer of quantities of granular materials having different particle sizes into separate storage hoppers, a discharge of measured quantities of at least one of said granular materials from at least one of said storage on a transport means, a transport of these dosed quantities by said transport means to a conveyor belt which conveys them to the top of a mixing stage, a mixing, in this mixing stage, of said dosed quantities, conveyed, d at least one of said granular materials with hydraulic binder, water and any additives, to form a pasty mass of concrete, and unloading of said pasty mass of concrete out of the mixing stage, for its exploitation .
  • an installation in known manner which comprises storage hoppers for receiving granular materials having different particle size sizes, which are provided with an upper loading opening and a lower orifice of discharge, closable, a transport means onto which are poured measured quantities of granular materials from said storage hoppers, a conveyor belt on which said transport means brings said measured quantities of granular materials, and a mixing stage having an inlet , wherein said conveyor belt conveys said metered quantities of granular materials, means for supplying hydraulic binder, water and any additives and a closable outlet for discharging a pasty mass of concrete.
  • mixing stage is meant according to the invention all the elements and devices which allow mixing of material, and therefore not only the mixer, but also the feed systems of the mixer.
  • this mixing stage has the shape of a tower, the upper level of which comprises scales for water, cement and any admixtures, as well as an aggregate tank to receive the already measured quantities of materials. granular and whose lower level consists of the mixer itself. When the mixer is empty, the scales and the aggregate tank can simultaneously empty into the mixer.
  • Concrete manufacturing facilities are used to provide products of several kinds, such as Bénor concretes that comply with European standards or rich concretes called "on composition", lean concretes, or various mixtures based on cement and aggregates such as stabilized stones, stabilized sands, screeds, specific concretes (road, cavernous, colloidal, etc.). Special admixtures are sometimes required and more and more it is sought to be able to recycle certain materials already previously used in concrete.
  • the concretes are mixed in a mixing tank called a waste, and the production is therefore carried out by batches which are obtained every 20 to 50 seconds, then poured into mixer vehicles, for example mixer trucks, each mixer truck being able to contain for example 3 wasted. This spill can also take place in dump trucks, flatbed trucks or even simple trailers attached to cars.
  • a method for manufacturing concrete comprising a transfer of quantities of granular materials having different particle size sizes into separate storage hoppers, a discharge of metered quantities of at least one of said granular materials from at least one of said hoppers of a first series of storage hoppers onto a first conveyor belt which, as a means of transport, runs in one direction, in a first direction, a discharge of metered quantities of at least at least one of said granular materials from at least one of said hoppers of a second series of storage hoppers on a second conveyor belt which, as a means of transport, runs along said direction, in a second direction opposite to the first, and a transport of these dosed quantities of granular materials by said conveyor belts to a conveyor belt which conveys them to the top of two separate mixing towers, in each of which these granular materials are mixed with hydraulic binder, water and possible additives , to form a pasty mass of concrete, to be unloaded for its exploitation
  • This last method makes it possible to produce several concretes of different compositions successively in a simplified manner and therefore makes it possible to accelerate the overall production of the installation implementing this method.
  • the aim of the present invention is to solve these problems and to propose a process and a concrete manufacturing plant which make it possible to improve the performance of concrete production plants and which allow great flexibility in the manufacture of different concretes in the same facility.
  • a method of manufacturing concrete as described above in which said transporting step further comprises in a selectable manner a feeding of the conveyor belt simultaneously by the first conveyor belt and by the second conveyor belt, said conveying of said metered quantities of granular material to the top of each of the mixing towers being effected by the conveyor belt in a selectable manner into an aggregate tank of one mixing tower or into an aggregate tank of the other mixing tower.
  • This method makes it possible, depending on the various orders, not only to increase or reduce very significantly and very quickly the production capacity of the installation, but also to rapidly supply batches of concrete of different compositions successively or even simultaneously.
  • the aforesaid granular materials also called aggregates, which comprise sands, gravel, and gravel of predetermined particle size sizes, can be brought to the mixers in easily adaptable successive mixtures.
  • the conveyor belt can be fed by one or more conveyor belts, themselves each supplied from one or more storage hoppers, which substantially multiplies the number of different granular mixtures that can be conveyed to the aggregate tank of one of the mixing towers or the other.
  • the quantity of hydraulic binder, water or additive can be adapted independently according to demand. Two mixer trucks can therefore harvest at the bottom of the mixers almost simultaneously two concretes of different qualities.
  • said transfer step comprises pouring at least one of the granular materials into at least one storage hopper from a carrier vehicle.
  • a carrier vehicle are, for example, tipper trucks.
  • said transfer step comprises intermediate storage of one of said granular materials in front of each storage hopper, and loading of the latter by simple pushing of the granular material.
  • the method according to the invention comprises a primary storage of said granular materials, separately, at a distance from said storage hoppers, and at the same level as the intermediate storage and said transfer step comprises a step of preliminary displacement of the material granular from the primary storage directly to the hoppers or to the intermediate storage, prior to loading the hoppers.
  • the method comprises weighing the granular materials dumped on the conveyor belts. A weighing of each conveyor belt during each aforementioned pouring on it of one of said granular materials allows a metering of the quantities poured from the storage hoppers.
  • an impact plate is arranged between the two discharge ends of the two conveyor belts so as to be able to pivot freely around an axis perpendicular to the direction of travel of the conveyor belts, the upper end the conveyor belt leading to an inclined, pivoting guide plate, which directs the metered quantities of granular materials into an aggregate tank of one of the mixing towers or into an aggregate tank of the other of said mixing towers, the installation further comprising control means which are arranged to produce an opening or a closing of the discharge orifice of one or more hoppers of one or of the two series of storage hoppers and a setting in motion of the one of the conveyor belts or both simultaneously so as to allow simultaneous supply of the granular materials to the conveyor belt from the first and second conveyor belts or a stoppage of this supply from one of the two conveyor belts and to control a pivoting of the pivoting guide plate so as to direct the granular materials into the aggregate tank of one or the other of the mixing towers.
  • control means are integrated in a remote control unit.
  • the moving conveyor belts are therefore arranged so as to move towards a lower end of the conveyor belt. They are, in a selected manner, charged or not with one or more granular materials.
  • the impact plate can pivot freely under the pressure of the flows of aggregates dumped from the left and/or from the right by the conveyor belts. In this way it directs at all times and almost vertically this or these flows towards the lower end of the conveyor belt.
  • this impact plate pivots to the opposite side under their thrust resulting in to prevent overflow of granular materials beyond the conveyor belt.
  • the impact plate When granular materials are dumped from both conveyor belts simultaneously, the impact plate remains static in a vertical position and it has the additional effect of channeling the flows and thus preventing them from interacting with each other d an inappropriate way.
  • the conveyor belt runs obliquely from this lower end to a higher end located above the upper inlet openings of the mixing towers, and the upper end of the conveyor belt opens onto an inclined, pivoting guide plate, which directs metered quantities of granular material directly into the aggregate tank of one or other of said mixing towers.
  • the installation comprises an intermediate storage area in front of the upper loading opening of each of the storage hoppers.
  • These intermediate storage areas can form a buffer storage space before storage in the hoppers. They can also be used to receive a carrier vehicle capable of carrying out direct pouring of granular material into the corresponding hopper, when the latter is empty. Dump trucks can then dump their contents directly into the hopper, thus avoiding costly handling of a loader machine which still has to push the stored material.
  • the installation also comprises primary storage areas for granular materials, located at a distance from the storage hoppers, and the primary storage areas and the intermediate storage areas are arranged at the same level which is equal to or higher than the upper inlet openings of storage hoppers.
  • these primary storage and intermediate storage areas are arranged on a single and same platform on which, for example, several loaders can travel simultaneously and transfer each of the granular materials to its intermediate storage area or areas, as needed.
  • These same loaders are also capable of pushing granular materials from their intermediate storage area into their storage hopper.
  • To reach the platform one can envisage an access ramp for trucks, or any other common means of transport.
  • This general arrangement allows each hopper to be loaded independently of the others depending on the needs and therefore a faster and easier supply of the installation.
  • At least one storage hopper comprises an upper part leading to a lower part comprising at least two separate compartments each provided with a lower unloading opening, which can be closed independently of the unloading opening. from the other compartment.
  • This arrangement facilitates a precisely controlled metering of the mixture of granular materials to be fed by the respective conveyor belt to the conveyor belt and allows a controlled discharge speed.
  • one or two of the lower unloading openings are opened.
  • the openings of the aforesaid compartments can be closed off by usual means such as for example valves for gravel and extractor belts for sand.
  • FIG. 1 shows a schematic plan view of an installation according to the invention.
  • FIG. 2 There picture 2 represents a sectional view along line II-II of the figure 1 .
  • FIG. 3 shows a plan view of the aggregate transport system to the top of the mixing towers.
  • FIG. 4 shows a profile view of the conveyor belts and the conveyor belt illustrated in the picture 3 .
  • the installation illustrated comprises a platform 1, to which dump trucks containing granular materials can reach via an access ramp 2.
  • Several primary storage areas 3 are provided on one side of the platform, in housings separated by partitions 4.
  • granular materials such as sands, gravel, gravel of various particle sizes, naturally at the rate of a single material per housing.
  • These granular materials have particle sizes corresponding to current standards, for example 0/80, 0/63, 32/63, 63/150, 0/20, 0/6.3, 6.3/20 etc. which will then be used independently depending on the finished product to be produced.
  • These standards correspond to the mesh openings of the screens and are to be expressed in mm.
  • each five storage hoppers 5 and 5' respectively which are each aligned above a conveyor belt 6 and 6' respectively.
  • these hoppers 5, 5′ each have an upper loading opening 7 and 7′ respectively, which, in the example illustrated, is located at the level of the platform 1.
  • intermediate storage 8 and 8 ' are arranged on the platform 1 in front of each storage hopper, being separated from each other by partitions 9 and 9' respectively. These intermediate storage areas 8, 8' serve as buffers between the primary storage areas 3 and the storage hoppers 5, 5'.
  • Each storage hopper comprises, in the example illustrated, an upper part, which, in the example illustrated, comprises two opposite vertical walls 11, 12, and respectively 11', 12', which are arranged perpendicular to their conveyor belt 6 , 6', and two walls inclined towards each other 13, 14 and 13', 14' respectively.
  • This upper part opens into two separate compartments 15, 16 and 15', 16' respectively, each of which has the shape of an inverted pyramid and which each has an overflow orifice 17 and 17' respectively, which can be closed.
  • the unloading opening is closed off by a valve 18.
  • This valve closes the corresponding compartment of the hopper if the latter should not see the granular material which it contains discharged or it opens it otherwise.
  • the passage of the valve 18 from an open position to a closed position or vice versa is carried out using any means standard known to those skilled in the art. In the example illustrated, it is opened using two cylinders 28 remotely controlled from a control unit 19.
  • the hopper contains a fine granular material, such as sand, it may be advantageous to regulate its unloading, not by a valve, but by an extractor belt known per se for this purpose, which can also be set in motion by the control unit 19.
  • the conveyor belts 6 and 6' are arranged so as to run horizontally towards each other in the same horizontal direction, but in opposite directions F1, F2, towards a lower end 21 of the belt. conveyor belt 20.
  • the two conveyor belts 6 and 6' simultaneously dump aggregates over the lower end of the conveyor belt 20.
  • the aggregates, arriving at a certain speed, are stopped in their tracks by a impact plate 30 which pivots freely.
  • the impact plate is in a vertical position, because it undergoes the thrust of the flows of material which come simultaneously from the conveyor belt 6 and from the conveyor belt 6'.
  • the pivoting impact plate As the pivoting impact plate is located between the two ends of the two conveyor belts 6, 6', it has the effect of causing an almost vertical drop of the aggregates from each of the conveyor belts towards the conveyor belt 20
  • the impact plate 30 can, under the pressure of the material, pivot along one of the arrows F3 or F4, thus preventing the aggregates from overflowing beyond it. of the conveyor belt.
  • Each mixer is provided in a known manner with various supply means, such as rockers, for hydraulic binder 25, 25', water 26, 26' and possible additives 27, 27', such as plasticizers .
  • These mixers are of course also provided with a closable lower outlet opening for unloading a pasty mass of concrete, for example into mixer trucks brought under the mixers.
  • the commissioning of one or the other of the conveyor belts 6 and 6 ', of the conveyor belt 20, of one or the other of the mixers of the mixing towers 24, 24' or of both can advantageously be controlled or controlled remotely from a single control unit 19. This can advantageously also control the opening or closing of each compartment of the hoppers 5, 5', of the aggregate tank 31, 31', of the scales supply of the mixers and the pivoting of the collector 29.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
EP22215150.8A 2021-12-21 2022-12-20 Verfahren und anlage zur herstellung von beton Pending EP4201625A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE20216018A BE1030054B1 (fr) 2021-12-21 2021-12-21 Procédé et installation de fabrication de béton

Publications (1)

Publication Number Publication Date
EP4201625A1 true EP4201625A1 (de) 2023-06-28

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ID=79425554

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22215150.8A Pending EP4201625A1 (de) 2021-12-21 2022-12-20 Verfahren und anlage zur herstellung von beton

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EP (1) EP4201625A1 (de)
BE (1) BE1030054B1 (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2953423A1 (fr) 2009-12-09 2011-06-10 Actial Ensemble de malaxage a froid susceptible de realiser des produits differents, et son procede de mise en oeuvre
CN105908600A (zh) * 2016-04-13 2016-08-31 贵州路桥集团有限公司 一种拌和机下置式配料仓的安装方法
CN110394899A (zh) * 2019-08-13 2019-11-01 杭州江河机电装备工程有限公司 一种搅拌站骨料上料系统和控制方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2953423A1 (fr) 2009-12-09 2011-06-10 Actial Ensemble de malaxage a froid susceptible de realiser des produits differents, et son procede de mise en oeuvre
CN105908600A (zh) * 2016-04-13 2016-08-31 贵州路桥集团有限公司 一种拌和机下置式配料仓的安装方法
CN110394899A (zh) * 2019-08-13 2019-11-01 杭州江河机电装备工程有限公司 一种搅拌站骨料上料系统和控制方法

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Publication number Publication date
BE1030054A1 (fr) 2023-07-13
BE1030054B1 (fr) 2023-07-18

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