EP0733451A2 - Betonmischer, insbesondere für die Baubranche - Google Patents

Betonmischer, insbesondere für die Baubranche Download PDF

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Publication number
EP0733451A2
EP0733451A2 EP96830063A EP96830063A EP0733451A2 EP 0733451 A2 EP0733451 A2 EP 0733451A2 EP 96830063 A EP96830063 A EP 96830063A EP 96830063 A EP96830063 A EP 96830063A EP 0733451 A2 EP0733451 A2 EP 0733451A2
Authority
EP
European Patent Office
Prior art keywords
concrete mixer
screw feeder
mixing
transfer
inlet
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.)
Withdrawn
Application number
EP96830063A
Other languages
English (en)
French (fr)
Other versions
EP0733451A3 (de
Inventor
Giuliano Vicchi
Fabio Piovaccari
Tonino Piovaccari
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.)
Soparis Di Vicchi Giuliano Piovaccari Fabio E Tonino SNC
Original Assignee
Soparis Di Vicchi Giuliano Piovaccari Fabio E Tonino SNC
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 Soparis Di Vicchi Giuliano Piovaccari Fabio E Tonino SNC filed Critical Soparis Di Vicchi Giuliano Piovaccari Fabio E Tonino SNC
Publication of EP0733451A2 publication Critical patent/EP0733451A2/de
Publication of EP0733451A3 publication Critical patent/EP0733451A3/de
Withdrawn legal-status Critical Current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
    • 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
    • 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
    • B01F27/1921—Stirrers with two or more mixing elements mounted in sequence on the same axis with dissimilar elements comprising helical elements and paddles
    • 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

Definitions

  • the present invention relates to a concrete mixer, that is to say, an apparatus for the mixing of preparations and is included, in particular, in the sector of machines which can be used in the building trade, designed to mix powdered or granulated solids with a liquid so as to obtain an homogenous mixture.
  • the preparation of mortars is important to both the quality of the works created and the production costs.
  • One method for the preparation of mortar, normally used for small jobs, is the conventional portable concrete mixer.
  • the mixture is created by pouring the various components into a drum or barrel which contains blades, then turning the barrel until the desired mixture is obtained.
  • One disadvantage of this type of machine is that only a relatively small quantity of mortar is obtained with each mixing cycle (e.g.: around 1 m 3 ). For this reason, when carrying out work which requires a significant quantity of mortar, it is extremely difficult to obtain barrels of mortar which have the same mixing specifications; moreover, for some jobs which envisage the simultaneous drying of all of the mortar used (e.g.: when laying some types of self-levellers), the machine cannot be used, since the pouring of the mortar obtained from the portable concrete mixer must occur is successive phases.
  • a ready-mixed material i.e.: material whose inert and binding components were previously dosed, is poured into the hopper from packaged sacks, or by connecting the machine to a silo.
  • the ready-mixed material is then mixed with water and mixed by a screw feeder which is turned by a geared motor and sent on to the outfeed for subsequent use, normally involving a final hopper, upon which a pump operates to transfer it to the final unloading point.
  • the aim of the present invention is, therefore, to eliminate the afore-stated disadvantages.
  • the Applicant has designed a concrete mixer which is able to continuously mix the individual components and the liquid, to provide mortars of the type desired, allowing variations in the percentages of the components themselves.
  • FIG. 1 is a schematic side view with some parts shown in cross-section and others cut away, of an embodiment of the present invention
  • - figure 2 is a detail of a possible screw feeder which may be used with the present invention
  • figure 3 is a diagram relative to another embodiment of the invention.
  • the concrete mixer indicated as a whole by the numeral 1, can be used in particular in the building trade.
  • the concrete mixer is suitable for use in obtaining mortar, concrete and similar mixtures by mixing a liquid with at least two components, suitably mixed according to the purpose for which the mortar is prepared, at least one being a binder.
  • the machine is supported by a structure with wheels which allow for its transportation; obviously, the machine may be supported in various ways, according to its use.
  • An advantage of the concrete mixer 1 is that it consists of a feed hopper 2 connected to a tubular transfer and mixing channel 3.
  • the hopper 2 is designed for the infeed of a first component (which may be an inert component) in the direction indicated by the arrow at infeed.
  • the tubular channel 3 has an outlet 8 and at least a first 4 and second 5 inlet, positioned between the hopper 2 and the outlet 8.
  • the two inlets 4 and 5 are designed for the infeed of a second component and the liquid (which may be water) into the channel 3.
  • arrows indicate the direction of infeed and outfeed of the various materials used in the concrete mixer 1.
  • mixing and transfer means consisting of a screw feeder 6 which is turned by drive means 7 such as a geared motor.
  • the screw feeder illustrated in figure 1 may be supported by a single shaft, driven by the geared motor or, depending on construction and/or functional requirements, by two sections of shaft which are interconnected and turn together.
  • the first section 6a extends along the tubular channel 3 at least at the first inlet 4 and is prevalently for material transfer.
  • the second section 6b which extends at least near to the outlet 8 of the tubular channel 3 is of the transfer and mixing type.
  • first section 6a of the screw feeder is prevalently for material transfer allows the suitable infeed of the second component into the channel, without the problems caused, for example, by a screw feeder with blades which could prevent infeed of the component.
  • the first section 6a of the screw feeder 6 is shaped as a spiral screw feeder, whilst the second section 6b has the shape of a screw feeder with blades 61, in particular with square, open blades 61.
  • the function of the screw feeder at the inlets for the infeed of substantially non-fluid components is preferably to receive the component as it enters the channel and transfer the said component, together with any others present, downstream, where a successive section of the screw feeder mixes them.
  • the first inlet 4 can be positioned upstream of the second inlet 5 and is designed for infeed of the binder (which may be cement).
  • Automatic measuring means may be fitted to the feed hopper 2 and first 4 and second 5 inlets, so as to regulate the volume of the components and the liquid fed into the concrete mixer 1.
  • a flowmeter can be fitted at the second inlet 5, to regulate the quantity of liquid fed into the tubular channel 3, and so the density of the mixture.
  • Extra inlets 9, 9' may be present on the tubular channel 3, in addition to inlets 4 and 5, and may be used to feed a corresponding number of extra components into the channel.
  • the screw feeder 6 may be spiral-shaped, its second section 6b having straight connecting sections 62, with length substantially equal to the pitch of the screw feeder and supported, parallel with the axis of rotation X of the screw feeder, between two successive loops in the spiral defined by the screw feeder.
  • another inlet 4' is envisaged, which may be used for the infeed of a powdered or granular component into the channel 3.
  • the embodiment in figure 3 includes a schematic illustration of a possible connection between the concrete mixer 1 and a plurality of machines which feed materials to the concrete mixer.
  • the concrete mixer 1 has at least a first screw feeder 6', positioned at the hopper 2, at least partially shaped like a screw feeder of the prevalently transferring type, and a second screw feeder unit 6, at least partially shaped like a transfer and mixing screw feeder.
  • the first screw feeder 6' is located in a front transfer channel 20, and the second screw feeder 6 in the transfer channel 3; the two screw feeders 6', 6 are driven by separate drive means, respectively motor 7 and motor 7', so that the transfer speed is independent of the concrete mixer 1 mixing speed.
  • the concrete mixer 1 includes automatic feed means (described below) controlled by relative control means 10, represented by a block 10 in figure 3, designed to allow variations in the mixing of the components and liquid depending on the type of mortar, concrete or similar mixture.
  • a silo 14 or conveyor 15 can be connected to the infeed of the hopper 2, the former being suitably connected and controlled by the control means 10, so as to vary the flow of a component, e.g.: inert, into the hopper 2.
  • a component e.g.: inert
  • the two transfer channels 20 and 3 are interconnected at an intermediate zone 34.
  • the two channels 20 and 3 are separated; when the concrete mixer is operative, the two channels are connected and the two screw feeders 6' and 6 are coaxial and turn independently.
  • Two transfer screw feeders 16, 18 are connected to inlets 4 and 4' which are located in the zone upstream 30 of the channel 3, the motors 17, 19 of said screw feeders being controlled by the control means 10.
  • the inlets 4, 4' can be used for the infeed of a binder and an inert component such as polystyrene for lightened mixtures.
  • a pump 31 may be connected to a tank 33 and controlled by the control means 10, for the infeed through inlet 5, of the water for mixing the mortar.
  • a device which produces foam is envisaged at the infeed of inlet 9.
  • the said device consists of a foaming-agent tube 26, fed by a pump 25, which feeds an additive to a relative tank 24, and a pump 23, which feeds water from a tank 27, as well as a compressor 21, having an adjustment valve 22.
  • the tank 24 for the water used for the foam may be the same as that used (33) for the water for the mixture.
  • the circuits upon which the water pumps act may have sub-circuits which are regulated by valves 32, so as to allow partial recirculation of the water when the pump is running slowly.
  • the infeed of inlet 9' may be connected to a pump 28 which feeds another additive, for example a fluidizer, which can be drawn from a relative tank 29.
  • a pump 28 which feeds another additive, for example a fluidizer, which can be drawn from a relative tank 29.
  • the outlet 8 is connected to a mixer 11, driven by a relative motor 13 and, in turn, connected to a pump 12 for mortar transfer.
  • control means 10 All of the components described above are controlled by the control means 10 and, wherever hydraulic motors are used, they are connected to the compressor 21.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
EP96830063A 1995-03-22 1996-02-13 Betonmischer, insbesondere für die Baubranche Withdrawn EP0733451A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT95BO000119A IT1281757B1 (it) 1995-03-22 1995-03-22 Impastatrice, in particolare per l'edilizia
ITBO950119 1995-03-22

Publications (2)

Publication Number Publication Date
EP0733451A2 true EP0733451A2 (de) 1996-09-25
EP0733451A3 EP0733451A3 (de) 1996-10-30

Family

ID=11340422

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96830063A Withdrawn EP0733451A3 (de) 1995-03-22 1996-02-13 Betonmischer, insbesondere für die Baubranche

Country Status (2)

Country Link
EP (1) EP0733451A3 (de)
IT (1) IT1281757B1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2390089A (en) * 1999-11-29 2003-12-31 Innovation Holdings A process for manufacturing concrete on a continuous basis
EP1610935A1 (de) * 2003-03-13 2006-01-04 Epscement AB Vorrichtung und verfahren für kontinuierliches mischen von leichtbeton sowie verwendung einer kombinierten förder- und mischschnecke in einer derartigen vorrichtung
WO2009030999A1 (en) * 2007-09-07 2009-03-12 Sirti, S.P.A. Continuous mixer/dispenser of mortar for filling channels, trenches or excavations
CN101725251B (zh) * 2009-11-19 2012-02-01 胡高凑 水泥灌注机
CN107661707A (zh) * 2016-07-29 2018-02-06 北京科林思源能源环境科技发展有限责任公司 一种挤压式连续输送混拌设备
CN107897986A (zh) * 2017-10-27 2018-04-13 郑州丽福爱生物技术有限公司 家畜饲料除尘杀菌干燥一体装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT352986B (de) * 1977-03-09 1979-10-25 Mathis Fertigputz Vorrichtung zur herstellung von angemachtem moertel od.dgl.
DE3506209A1 (de) * 1985-02-22 1986-08-28 Wilhelm 6833 Waghäusel Haase Verfahren zum herstellen von moertelmischungen oder dergleichen und mischer zur durchfuehrung des verfahrens
DE3546501A1 (de) * 1985-09-13 1987-04-23 Heidelberger Zement Ag Vorrichtung zur kontinuierlichen bereitstellung von hydraulisch abbindender masse
DE9211567U1 (de) * 1992-08-27 1992-10-29 BuG Betriebsanlagen- und Grundbesitz GmbH, 8046 Garching Vorrichtung zur baustellenseitigen Herstellung von pumpfähigen Mörtelmassen

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2390089A (en) * 1999-11-29 2003-12-31 Innovation Holdings A process for manufacturing concrete on a continuous basis
EP1610935A1 (de) * 2003-03-13 2006-01-04 Epscement AB Vorrichtung und verfahren für kontinuierliches mischen von leichtbeton sowie verwendung einer kombinierten förder- und mischschnecke in einer derartigen vorrichtung
WO2009030999A1 (en) * 2007-09-07 2009-03-12 Sirti, S.P.A. Continuous mixer/dispenser of mortar for filling channels, trenches or excavations
CN101725251B (zh) * 2009-11-19 2012-02-01 胡高凑 水泥灌注机
CN107661707A (zh) * 2016-07-29 2018-02-06 北京科林思源能源环境科技发展有限责任公司 一种挤压式连续输送混拌设备
CN107897986A (zh) * 2017-10-27 2018-04-13 郑州丽福爱生物技术有限公司 家畜饲料除尘杀菌干燥一体装置

Also Published As

Publication number Publication date
ITBO950119A0 (it) 1995-03-22
IT1281757B1 (it) 1998-03-03
EP0733451A3 (de) 1996-10-30
ITBO950119A1 (it) 1996-09-22

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