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WO2009030999A1 - Dispositif permettant de mélanger/distribuer du mortier en continu pour remplir des canaux, des tranchées ou des excavations - Google Patents

Dispositif permettant de mélanger/distribuer du mortier en continu pour remplir des canaux, des tranchées ou des excavations Download PDF

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Publication number
WO2009030999A1
WO2009030999A1 PCT/IB2008/002253 IB2008002253W WO2009030999A1 WO 2009030999 A1 WO2009030999 A1 WO 2009030999A1 IB 2008002253 W IB2008002253 W IB 2008002253W WO 2009030999 A1 WO2009030999 A1 WO 2009030999A1
Authority
WO
WIPO (PCT)
Prior art keywords
dispenser
mortar
water
continuous mixer
tank
Prior art date
Application number
PCT/IB2008/002253
Other languages
English (en)
Inventor
Angelo Leo
Edoardo Cottino
Luca Gersony
Martin Maier
Original Assignee
Sirti, S.P.A.
Agres S.R.L.
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 Sirti, S.P.A., Agres S.R.L. filed Critical Sirti, S.P.A.
Priority to ES08806953.9T priority Critical patent/ES2546728T3/es
Priority to EP08806953.9A priority patent/EP2191072B1/fr
Publication of WO2009030999A1 publication Critical patent/WO2009030999A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/46—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing and placing the materials, e.g. slurry seals
    • E01C19/47—Hydraulic cement concrete mixers combined with distributing means specially adapted for road building
    • 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
    • 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
    • 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
    • B28C5/1292—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 rotating stirring and feeding or discharging means fixed on the same axis, e.g. in an inclined container fed at its lower part
    • 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
    • B28C7/0404—Proportioning
    • B28C7/0418—Proportioning control systems therefor
    • 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
    • B28C7/12—Supplying or proportioning liquid ingredients

Definitions

  • the present invention refers to a continuous mixer/dispenser of mortars for filling channels, trenches or excavations.
  • the present invention refers to a mixer/dispenser of mortars for filling channels, trenches or in general excavations made to lay cables underground in carriageable and/or pedestrian areas.
  • the laying of cables underground takes place substantially according to the following steps in succession
  • Normally excavations or ducts suitable for receiving one or more cables, for example electrical or fibre optic, are made on the road surface, for example on its side edges, on the verge, or in some cases directly on the pavement.
  • the works are usually carried out by making the excavation in open air, laying the duct or the cable and covering the excavation itself with earth or gravel and then restoring the asphalt o the original covering removed while making the excavation.
  • the time taken to perform the aforementioned works, the size of the necessary machinery and the environmental impact of such works are extremely critical.
  • the step of filling in the excavation and restoring the pre-existing verge or surfacing must be fast and flexible, in the sense of adapting to the conditions and the contingent needs.
  • the machinery used must also allow a possible recovery of the efficiency of the equipment directly in situ avoiding dirtying and pollution of the work area and, at the same time they must be small in size.
  • the Applicant has made an optimised, fast and efficient method to carry out the laying of cables or ducts underground that meets the aforementioned requirements, in which the size of the trench is foreseen to be very small, the size of the machinery used are kept small, the material removed from the channel can be immediately taken in and in which the filling of the channel itself after the laying of the duct or of the cable is carried out with a quick- setting material and is compatible with the requirements of a pavement or a road surface.
  • the devices according to the prior art usually operate in discontinuous "batch” mode, i.e. being loaded one batch at the time.
  • Such a mode is not flexible and is not suited either to making small-sized fillings with quick-setting material, or to the variability in size of the excavations to be filled since it is difficult to foresee and calculate the amount of filling material to use in each load.
  • the Applicant has therefore set itself the problem of how to achieve the filling of excavations of variable dimensions and of small size in a flexible manner and in small spaces. Therefore, the Applicant proposes, according to the present invention, a continuous dispensing mixer of mortar for filling channels, trenches or excavations capable of carrying out the optimised filling of the excavation in which the cables are laid using even fast-setting material.
  • An aspect of the present invention therefore concerns a continuous mixer/dispenser of mortar for filling channels, trenches or excavations comprising:
  • At least one tank for separately containing solid materials such as binders and possible additives and inerts;
  • a pump connected to said tank of water to pressurise the water contained in the tank to the desired value; an adjustment system, flowmeter, that allows the amount of water to be entered into the mixing chamber to be controlled; - a dispensing system of the mortar into the channel, trench or excavation to be filled, in turn fed by the mixing chamber.
  • figure 1 is a schematic figure of the main components of the dispensing mixer according to the present invention.
  • figure 2 schematically illustrates the dispensing mixer according to the present invention
  • a mortar made up of one or more pipes and/or cables; the excavation is then filled in with suitable filling material 4 in general a mortar, according to the preferred embodiment of the invention a low- shrinkage and fast-setting mortar of cement, comprising a suitable binder L possibly mixed with additives, inerts I and mixing water W.
  • This check can be carried out preliminarily and independently from the excavation work or, more advantageously, it can be carried out with non- invasive methods (like, for example, the use of Georadar techniques) with machinery immediately in front of that which will carry out the excavation and that performs checks as it advances.
  • the checking can be immediately followed by the making of an excavation or trench 5 of extremely small dimensions. For example, and in a non- limiting way, dimensions compatible with the requirements indicated previously are an excavation of depth of about 20 to about 50 cm and of width between 3 and 10 cm.
  • a device for inspecting the subsoil analyses for the presence of possible pre-existing underground services for the depth involved in the excavation and precedes a small machine for milling the earth preferably comprising a trench-cleaning blade and possibly a suitable sucking device, which moves in synchrony with a moving device, and which is suitable for sucking in the material removed from the excavation at the same time as the production of the material itself, so as to produce a trench ready for the laying of the duct or cable inside of it, immediately after the machine and the suction device have passed over the part of trench made.
  • the device for analysing the subsoil is positioned at the front of the work train, which allows the excavation work to be stopped or adjusted through suitable servo control.
  • the small size of the excavation trench allows the size of the machinery used to be kept small, thanks to the small amount of material removed.
  • the suction device can be used to remove the material in the parts of the trench that can have other underground services passing through them, avoiding damaging them.
  • the dispensing mixer 100 according to the invention is mounted on a suitable vehicle preferably connected to the machine group to move in synchrony with the excavation miller and with the device for laying the cables so as to carry out the filling of the excavation continuously allowing traffic to pass over the excavation, in the relatively short periods necessary for the solidification of the filling material.
  • a material suitable for filling the excavation is a mortar for example a quick- setting mortar of cement that can be cast with controlled shrinkage, mixed with suitable inerts and possibly fine gravel for mortar with characteristics of being able to support traffic a short time after laying.
  • the continuous mixer/dispenser 100 of mortars 4 for filling channels, trenches or excavations 5 comprises: - at least one tank 101, 101a, 101b for separately- containing solid materials such as binders and possible additives L and inerts I;
  • an adjustment system or flowmeter 164 which allows the amount of water W to be entered into the mixing chamber 120 to be controlled; - a dispensing system 140 of the mortar 4 into the channel, trench or excavation 5 to be filled, in turn fed by the mixing chamber.
  • the dispensing mixer 100 can comprise single tank 101 made in the form of a container with separate tanks 101a, 101b, 101c inside of it intended to contain the components of the mortar and thus suitably sized, or else it can comprise the tanks 101a, 101b, 101c positioned separately.
  • the premixing chamber 110 of the solids is fed with the binder and possible additives and the inerts coming respectively from the tanks 101a and 101b through a system of batching plants preferably made through first Archimedean screws, an Archimedean screw 102 for the binder and an Archimedean screw 103 for the inerts.
  • Such Archimedean screws 102 and 103 are installed in suitable ducts, are each made to rotate by a relative motor, the Archimedean screw 102 for the binder is actuated by first motor Ml and the Archimedean screw 103 for the inerts is actuated by a second motor M2.
  • Both of the Archimedean screws 102 and 103 are calibrated and adjustable in flow rate through adjustment of the motors Ml and M2 so as to feed the premixing chamber batching the solid components in a controlled and programmable manner.
  • One or both of the Archimedean screws 102 and 103 are also provided, at the mouth, with corresponding presence sensors of the material, 160 and 161 respectively that can be connected through respective lines 152,153 to a central processing and control unit 150 or else they can be controlled manually directly and separately to control and indicate the lack of binder or of inert or of both.
  • the Archimedean screw 102 for the binder feeds a predetermined amount of material and the Archimedean screw 103 for the inerts is adjusted to make the correct premixing ratio in the chamber 110, also in the case of stopping the dispensing, the feeding of solids can also be stopped avoiding the clogging up of the premixing chamber 110.
  • the premixing chamber 110 has a square shape with substantially vertical side walls 111 tapered towards the base and joined by a substantially cylindrical base plate 112 in which along the longitudinal axis a premixing conveyor 105 is arranged in the form of a second Archimedean screw 105 made to rotate by a third motor M3.
  • the rotation of the two first Archimedean screws 102,103 is carried out in opposite directions, in particular each one rotates towards the relative side wall 111 of the premixing chamber so as to feed the solid making it fall near to the corresponding side wall.
  • the premixing conveyor 105 causes the mixture of solids to advance mixing it further so as to homogenise its composition and conveys the material to the mixing chamber where, through feeding of water W with predetermined pressure and amounts, the mortar is made to fill the excavation.
  • a level sensor 162 of the material is also foreseen that can be directly provided with an actuator for shutting off/restarting the feed of solids once predefinable respective full/empty thresholds of the premixing chamber have been reached or it can be connected to the central unit 150 through a line 154 for processing and controlling the operations .
  • the premixing conveyor 105 discharges the solid mixture into the mixing chamber 120 that is made in the form of a hollow cylindrical body 121 in which a shaft 122 with paddles 123 rotates axially and in which the water W is fed from a pipe 104 connected to the pump 163 for pressurisation and prior to the water tank 101c.
  • the flow rate of water W is controllable and adjustable through the flowmeter 164 connected through a line 151 to the corresponding transducer arranged in the central unit 150.
  • the mortar is obtained by- mixing the solids with a predetermined amount of water.
  • the shaft 122 with paddles 123 also takes care of transporting the mortar up to the end of the mixing chamber discharging it in a hopper container 130 equipped with a level sensor/actuator 131 arranged to control the stopping of feeding of the entire mixer in the case in which a threshold level of mortar has been reached in the container 130.
  • the hopper container 130 is connected to the dispensing system 140 of the mortar in the channel, trench or excavation to be filled and feeds said system with the mortar.
  • the dispensing system 140 of the mortar is made in the form of a tubular element 144 at least partially flexible to adapt to the shapes of the excavations and be directly aimed by the operator.
  • the mortar is pushed forward through a thruster 145 preferably made in the form of a helical blade made to rotate by a motor 141 connected to an end of the tubular element 144.
  • a thruster 145 is preferably made from spring steel whereas the tubular element 144 is made from rubber or from a suitable flexible and strong material with a suitable steel core embedded inside it.
  • the thruster 145 in the form of a helical blade, allows the mortar to be dispensed continuously independently from the composition thereof so as to avoid possible drawbacks of composition since such a thruster carries out a continuous mixing of the mortar together with moving it forward.
  • the motor 141 for rotating the thruster is of the type using an inverter with continuous adjustment of the rotation speed, from zero to the maximum, so as to adapt the dispensing to the setting times of the mortar and possibly stop the supply of mortar and if necessary empty the dispensing system.
  • the dispensing system can be equipped, at the mouth, with a support trolley 146 in turn equipped with a shaver 147 for levelling off the mortar .
  • the components of the mixer are foreseen to be easy to assemble/disassemble and are made from materials that mortar cannot attach to.
  • the premixing chamber is provided with bayonet attachments and the dispensing system is provided with flanges for attachment to the hopper container 130.
  • Both the thruster 145 an the tubular element 144 can thus be easily dismounted and cleaned in the tank 170, in particular the tubular element 144 is provided with a flange with suitable attachment 147 to connect a flow rate of pressurised water to clean the tube through a sponge ball introduced inside it and thrusted by the pressurised water.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Automation & Control Theory (AREA)
  • Civil Engineering (AREA)
  • Architecture (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Soil Conditioners And Soil-Stabilizing Materials (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Detergent Compositions (AREA)

Abstract

L'invention concerne un dispositif (100) permettant de mélanger/distribuer du mortier en continu pour remplir des canaux, des tranchées ou des excavations (5). Le dispositif (100) comprend : au moins un réservoir (101, 101a, 101b) permettant de contenir des matières solides, telles que des liants, d'éventuels additifs (L) et des matières inertes (I), de manière séparée; un compartiment de prémélange (110) servant à prémélanger lesdits matériaux solides; une vis d'Archimède (102, 103) permettant de transporter les matières solides provenant au moins d'un réservoir jusqu'au compartiment de prémélange; un dispositif de transport (105) de prémélange servant à transporter le prémélange de matières solides; un compartiment de mélange (120) servant à préparer le mortier par mélange des matières solides avec de l'eau (W); un réservoir (101c) d'eau (W) relié au compartiment de mélange pour alimenter ce dernier en eau; une pompe (163) reliée au réservoir (101c) d'eau (W) pour mettre l'eau contenue dans le réservoir sous pression à une valeur voulue; un système de régulation ou un débitmètre (164) permettant de réguler la quantité d'eau (W) entrant dans le compartiment de mélange (120); un système de distribution (140) servant à distribuer le mortier dans un canal, une tranchée ou une excavation à remplir, lequel système étant alimenté par le compartiment de mélange (120).
PCT/IB2008/002253 2007-09-07 2008-08-25 Dispositif permettant de mélanger/distribuer du mortier en continu pour remplir des canaux, des tranchées ou des excavations WO2009030999A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ES08806953.9T ES2546728T3 (es) 2007-09-07 2008-08-25 Mezcladora y dispensador continuos de mortero para rellenar canales, zanjas o excavaciones
EP08806953.9A EP2191072B1 (fr) 2007-09-07 2008-08-25 Dispositif permettant de mélanger et distribuer du mortier en continu pour remplir des canaux, des tranchées ou des excavations

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI2007A001736 2007-09-07
IT001736A ITMI20071736A1 (it) 2007-09-07 2007-09-07 Miscelatore/erogatore in continuo di malte per il riempimento di canali, trincee o scavi

Publications (1)

Publication Number Publication Date
WO2009030999A1 true WO2009030999A1 (fr) 2009-03-12

Family

ID=40228197

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2008/002253 WO2009030999A1 (fr) 2007-09-07 2008-08-25 Dispositif permettant de mélanger/distribuer du mortier en continu pour remplir des canaux, des tranchées ou des excavations

Country Status (4)

Country Link
EP (1) EP2191072B1 (fr)
ES (1) ES2546728T3 (fr)
IT (1) ITMI20071736A1 (fr)
WO (1) WO2009030999A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7611275B2 (en) * 2007-06-14 2009-11-03 Crespo Pedro R Portable cement mixing and dispensing assembly
CN103465367A (zh) * 2013-09-23 2013-12-25 夏瑾 叠层式防堵干粉砂浆搅拌机
CN103753702A (zh) * 2013-12-26 2014-04-30 杭州山海机械有限公司 一种带自动清洗功能的砂浆搅拌机
CN108698001A (zh) * 2016-03-01 2018-10-23 Sika技术股份公司 混合器、用于施加建造材料的系统和用于由建筑材料制造结构的方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4117547A (en) * 1975-05-27 1978-09-26 Mathis Fertigputz Gmbh Apparatus for the preparation of mortar or the like
SU1416318A1 (ru) * 1986-10-24 1988-08-15 Белорусский Научно-Исследовательский И Проектно-Технологический Институт Организации И Управления Строительством Госстроя Бсср Установка дл приготовлени и подачи строительных растворов
EP0509966A1 (fr) * 1991-04-03 1992-10-21 B.V. di VISINI GIANPIERO & C. S.n.c. Equipement pour préparer, transporter et distribuer du mortier, du platre et/ou agrégats granulaires ou matériaux poudreux
EP0733451A2 (fr) * 1995-03-22 1996-09-25 SO.PA.RI.S. di VICCHI GIULIANO PIOVACCARI FABIO E TONINO S.n.c. Malaxeur de béton, en particulier pour les industries du bâtiment

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4117547A (en) * 1975-05-27 1978-09-26 Mathis Fertigputz Gmbh Apparatus for the preparation of mortar or the like
SU1416318A1 (ru) * 1986-10-24 1988-08-15 Белорусский Научно-Исследовательский И Проектно-Технологический Институт Организации И Управления Строительством Госстроя Бсср Установка дл приготовлени и подачи строительных растворов
EP0509966A1 (fr) * 1991-04-03 1992-10-21 B.V. di VISINI GIANPIERO & C. S.n.c. Equipement pour préparer, transporter et distribuer du mortier, du platre et/ou agrégats granulaires ou matériaux poudreux
EP0733451A2 (fr) * 1995-03-22 1996-09-25 SO.PA.RI.S. di VICCHI GIULIANO PIOVACCARI FABIO E TONINO S.n.c. Malaxeur de béton, en particulier pour les industries du bâtiment

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7611275B2 (en) * 2007-06-14 2009-11-03 Crespo Pedro R Portable cement mixing and dispensing assembly
CN103465367A (zh) * 2013-09-23 2013-12-25 夏瑾 叠层式防堵干粉砂浆搅拌机
CN103753702A (zh) * 2013-12-26 2014-04-30 杭州山海机械有限公司 一种带自动清洗功能的砂浆搅拌机
CN103753702B (zh) * 2013-12-26 2016-02-17 杭州山海机械有限公司 一种带自动清洗功能的砂浆搅拌机
CN108698001A (zh) * 2016-03-01 2018-10-23 Sika技术股份公司 混合器、用于施加建造材料的系统和用于由建筑材料制造结构的方法
EP3646943A3 (fr) * 2016-03-01 2020-10-14 Sika Technology Ag Procédé pour fabriquer une structure en matériau de construction
EP3659699A3 (fr) * 2016-03-01 2020-10-21 Sika Technology Ag Mélangeur
US12064901B2 (en) 2016-03-01 2024-08-20 Sika Technology Ag Mixer, system for applying a building material and method for producing a structure from building material

Also Published As

Publication number Publication date
EP2191072B1 (fr) 2015-06-17
ES2546728T3 (es) 2015-09-28
EP2191072A1 (fr) 2010-06-02
ITMI20071736A1 (it) 2009-03-08

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