EP1782934A1 - Vorrichtung zur Herstellung von Produkten wie Beton oder Mörtel - Google Patents

Vorrichtung zur Herstellung von Produkten wie Beton oder Mörtel Download PDF

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Publication number
EP1782934A1
EP1782934A1 EP06123346A EP06123346A EP1782934A1 EP 1782934 A1 EP1782934 A1 EP 1782934A1 EP 06123346 A EP06123346 A EP 06123346A EP 06123346 A EP06123346 A EP 06123346A EP 1782934 A1 EP1782934 A1 EP 1782934A1
Authority
EP
European Patent Office
Prior art keywords
control
low level
hopper
ecu
product
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.)
Granted
Application number
EP06123346A
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English (en)
French (fr)
Other versions
EP1782934B1 (de
Inventor
Luc Courtes
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.)
Lancy Mixjet SAS
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Lancy Mixjet SAS
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Publication date
Application filed by Lancy Mixjet SAS filed Critical Lancy Mixjet SAS
Publication of EP1782934A1 publication Critical patent/EP1782934A1/de
Application granted granted Critical
Publication of EP1782934B1 publication Critical patent/EP1782934B1/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
    • 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
    • B28C7/02—Controlling the operation of the mixing
    • B28C7/028—Controlling the operation of the mixing by counting the number of revolutions performed, or by measuring the mixing time
    • 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
    • B28C7/02—Controlling the operation of the mixing

Definitions

  • the present invention relates to a device for preparing a product such as concrete or mortar comprising a mixing tank equipped with a kneader adapted to be rotated by drive means, a receiving hopper for the kneaded product , introduction means for introducing into said hopper the kneaded product from the mixing tank, these introduction means being adapted to adopt a drainage configuration allowing the introduction into the hopper of the kneaded product and a rest configuration, means for detecting a low level of product in the hopper, an actuating mechanism capable of passing the means for introducing the idle configuration to the emptying configuration, and control means for the driving means and the actuating mechanism.
  • a device of this type is known by the patent FR 2 843 313 .
  • the product which is obtained after its mixing, concrete, mortar, plaster or the like, is introduced into the hopper for later use.
  • the device of the invention can equip a machine for transporting the product to its place of use, or to project it on a surface to be covered.
  • the hopper may have an output connected to a projection lance, by a pump, for example of the type called "Moineau pump".
  • an operator pours into the mixing tank a powdery product, in particular a mixture of several pulverulent products such as sand and binder, to which water is added during the mixing to obtain the consistency and the desired homogeneity.
  • a powdery product in particular a mixture of several pulverulent products such as sand and binder, to which water is added during the mixing to obtain the consistency and the desired homogeneity.
  • the operator passes the introduction means in their emptying configuration, to feed the receiving hopper with the product that has just been kneaded. It then passes these means of introduction into their rest configuration, pours again pulverulent mixture and water into the mixing tank, and the operation starts again.
  • the powder mixture is for example stored in flexible containers or bags, which are conveyed by the operator to the mixing tank, for the introduction of the mixture into this tank. It can also be stored in a pile at the bottom of the tank, to be introduced into it by shovel. With the current machines, it It is necessary for the operator to remain almost permanently at the foot of the mixing tank. Indeed, it must ensure that the hopper is regularly supplied with mixed product, to avoid delays or interruptions in the use of this product, which would be particularly troublesome if the device equips a machine to project .
  • the document FR 2 843 313 mentioned above proposes equipping the hopper with means for detecting a predetermined low level, which are coupled to means for controlling the automatic opening of an introduction flap.
  • the object of the invention is to overcome these disadvantages by proposing a simple and reliable system of use.
  • control means comprise a timing control able to control a drive of the mixer for a given mixing time and an actuation command able to control the passage of the introduction means into the configuration of the mixer. draining when said mixing time has elapsed and said low level is detected.
  • the passage of the introduction means to their emptying configuration is allowed only when, on the one hand, the low level in the hopper is detected and that, on the other hand, the mixer has actually performed kneading during a determined kneading time. Consequently, if the operator has forgotten to pour the product into the mixing tank and to control the starting of the mixing, the opening will not be possible. Similarly, if he realizes he has forgot to reload the tank, and it urgently pours a mixture in the mixing tank, the opening will be allowed once the mixing has been performed for the predetermined time. This time is determined according to the parameters of the mixture, and the performance of the mixer, to obtain the desired consistency and homogeneity.
  • the operator can therefore move away periodically from the device, to focus on other tasks that management of its operation.
  • the drive means are capable of driving the mixer at a kneading speed and at a reduced speed, lower than said kneading speed
  • the timing control comprises a kneading command, able to control the drive of the kneader. at the kneading speed during the determined kneading time and a slow stirring control able to control the drive of the kneader at the reduced speed after the expiration of said kneading time.
  • the device comprises means for detecting a critical low level and means of transporting the product contained in the hopper to an outlet of the latter, and the control means comprise a stop command of said means of transport when said low critical level is detected.
  • the means of transport and, in particular when the latter comprise a pump, for example a "Sparrow pump", to protect the latter by preventing it from running empty at the risk of deteriorate, and it sucks air, which is detrimental to the correct projection of the product.
  • the device comprises means for detecting the rest configuration of the insertion means.
  • control means are able to authorize the driving of the kneader for kneading only when the introduction means are in their rest position.
  • the device 10 of FIG. 1 comprises a mixing tank 12 equipped with a kneader 14, constituted in this case by a horizontal shaft 15 which carries blades 16 and which is rotated by a motor 18 outside the tank 12 .
  • Powdered material may be introduced into the mixing tank 12 through the upper opening 20 thereof.
  • the opening 20 comprises for example a grid 22, with a shearing knife 24 for the bags in which such a material is conditioned.
  • water is introduced into the mixing tank 12, for example through the opening 20.
  • the device 10 also comprises a receiving hopper 26 for the kneaded product.
  • a pump 28 for example of the type called “Sparrow pump” is connected to the lower part of the hopper 26 for the evacuation of the mixture. This pump is driven by a motor 29.
  • the mixing tank 12 partly overcomes the receiving hopper 26, the bottom 13 of the tank being partly disposed above the upper opening 27 of the hopper.
  • a hatch 30 is formed in the bottom 13 which forms a partition wall between the mixing tank and the receiving hopper.
  • the hatch 30 can be opened as shown in solid line in Figure 1, to allow the natural discharge of the product P in the tank 12 to the receiving hopper 26, under the effect of the thrust of the blades 16 of kneader 14.
  • this hatch 30 can be closed as shown in broken lines in Figure 1.
  • the hatch 30 is an example for the means for introducing the product P into the hopper, the closed position of the corresponding hatch at the rest configuration of said means, while its open position corresponds to the emptying configuration.
  • the actuating mechanism of the hatch between its closed and open configurations comprises in the example shown a hydraulic jack 32. It should be understood that any type of mechanism for operating a hatch can be used.
  • Means 34 for detecting a low level of product are arranged in the hopper. These means comprise a sensor of any conceivable type, in particular a bubbling detector (by blowing compressed air, making it possible to detect the presence of product at the output of the detector by variation of the blowing pressure), a detector of resistivity or any other known system for detecting the presence of product.
  • a sensor of any conceivable type in particular a bubbling detector (by blowing compressed air, making it possible to detect the presence of product at the output of the detector by variation of the blowing pressure), a detector of resistivity or any other known system for detecting the presence of product.
  • the detection means 34 are connected to an electronic control unit ECU ("Electronic Control Unit") by a link 134 allowing said detection means 34 to transmit to the ECU a signal when the low level is detected; that is, when the product level P present in the hopper is at most equal to the detection threshold for which the means 34 are set.
  • ECU Electronic Control Unit
  • the control unit ECU is also connected to the drive motor 18 of the mixer 14 via a link I18. This unit is still linked to the actuating mechanism 32 of the hatch 30 by an I32 connection.
  • the ECU control unit is able to control the drive of the mixer 14, the opening and closing of the hatch 30, and is aware of the detection of a low level by the means 34.
  • control unit ECU When the powdery material and the water have been poured into the mixing tank 12, the hatch 30 being closed, the operator can give control information I to the control unit ECU, for example by pressing a start button of the motor 18, in which case said unit causes the drive 14 to be driven by activation of the motor 18 at the mixing speed.
  • the mixing time can be pre-recorded in a memory zone of the ECU unit, being modifiable or not, in particular by means of a timer. Several mixing times can be pre-recorded, the device then having means for selecting one of these durations.
  • the unit ECU causes, when the information 1 is given, the activation of the engine 18 at the kneading speed for the determined kneading time and then reduces the output speed of the engine.
  • This makes it possible to ensure that, once the mixture has been correctly kneaded, and as long as the hatch 30 remains closed (the product P being above the low level in the hopper 26), the kneader is driven at a speed reduced to only slowly agitate the product to prevent it from coming into engagement.
  • a reset is carried out, for example by closing the hatch 30 or by new information I given to the control unit ECU to restart the mixer once the hatch 30 has been closed and that the product has been closed. It has been reintroduced into the mixing tank 30, so that the kneading occurs again for the desired duration.
  • the device shown in Figure 1 comprises means for detecting the rest configuration of the introduction means. Specifically, a position sensor or the like 36 is disposed at the edge of the opening of the wall 13 which is hidden by the hatch 30 in its closed position. This sensor detects the presence of the hatch 30 in this closed position, which corresponds to the rest position of the insertion means. Through an I36 link, this information is transmitted to the ECU control unit. This makes it possible to avoid, if the hatch 30 has not been correctly closed, to activate the drive of the mixer 14 at its kneading speed.
  • control means are able to control the emission of a warning signaling an emptying of the mixing tank.
  • the ECU control unit is connected to a signal transmitter S, by an IS link.
  • This signal may for example be of sound and / or visual type.
  • the signal transmitter S can be activated by the ECU unit at the same time as it activates the jack 32 for raising the hatch. This makes it possible to inform the operator of the emptying of the mixer, for reasons of safety and for the operator to come to refill the tank after this emptying.
  • Means 35 for detecting a critical low level are also arranged in the hopper. They may be identical to the means 34 described above.
  • These means 35 serve to detect a critical level of product P in the hopper, lower than the low level detected by the means 34.
  • This critical low level is the one from which the operation of the pump 28 is no longer ensured if the level continues. to fall.
  • the detection of this critical low level is transmitted to the ECU unit by a link 135 between the means 35 and the ECU.
  • the ECU Upon receipt of this information, the ECU emits a control signal through a link 129 between the ECU and the motor 29 of the pump 28, to stop this motor and avoid vacuum pumping.
  • the low level and the critical low level are the same level and the stop command of the transport means of the product contained in the hopper (pump 28) is triggered when the low level is detected while the means of introduction (hatch 30 or opening 130 of the tank 112 tilted described below) are in their empty configuration.
  • the introduction means normally remain in their empty configuration after emptying, as long as the operator has not put them in rest configuration to recharge the tank.
  • the device 110 shown in these figures is in this case carried on a mobile carriage, which can be coupled to a vehicle to be easily brought to a site. It thus comprises a frame supported by wheels 50.
  • the device also comprises a mixing tank 112, with a mixer 14 similar to that of FIG. 1, and driven by a motor 18. It also comprises a receiving hopper 126 which can be equipped with a pump Moineau 28 similar to that of the device of Figure 1.
  • the means for introducing the product into the hopper are different from those of FIG. 1.
  • these means comprise an opening 130 disposed in the upper part of the mixing tank 112 and a tilting mechanism of this tank which is suitable for to tilt it to bring this opening 130 above an opening of the hopper, which is its upper opening 127.
  • the tilting mechanism comprises in this case a hydraulic cylinder 132, the mixing tank being pivotally mounted about an axis A.
  • the cylinder 132 is in its activated position, in which it tilts the tank 112 about its axis A, while it is in the inactive position in Figure 3, on which we see that the tank is disposed next to the hopper 126.
  • the opening 120 of filling of the tank is accessible as the opening 20 of the tank 12 of Figure 1.
  • the opening 130 is adjacent to the opening 120, being disposed between the hopper 126 and said opening 120.
  • FIGS. 2 and 3 also show the ECU control unit, generally similar to that of FIG. 1. It is connected to the low level sensor of the hopper 34 via a connection I34, to the actuating mechanism of the actuator 132 for tilting vessel 112 through link I132, to drive motor 18 of mixer 14 via link I18, and via link I136 to a sensor 136 detecting the positioning of mixing vessel 112 in the configuration of rest shown in Figure 3. It is also connected to the sensor 35 of critical low level by a link I35 and the motor 29 of the pump 28 by a link 129.
  • the ECU is still connected to a signal transmitter S via an IS link.
  • ECU control unit is connected to the various sensors and mechanisms by links, but these may be links other than wired links.
  • the control unit can also be of the electric, pneumatic or hydraulic type.
  • the positions of the sensors 34 and 35 in the hopper can be fixed or adjustable.
  • the device 10 of FIG. 1 could be mobile, like that of FIGS. 2 and 3, and vice versa.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Silicates, Zeolites, And Molecular Sieves (AREA)
  • Glass Compositions (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Polyurethanes Or Polyureas (AREA)
EP06123346A 2005-11-07 2006-11-02 Vorrichtung zur Herstellung von Produkten wie Beton oder Mörtel Active EP1782934B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0511306A FR2892967B1 (fr) 2005-11-07 2005-11-07 Dispositif de preparation d'un melange, par exemple pour machine a projeter

Publications (2)

Publication Number Publication Date
EP1782934A1 true EP1782934A1 (de) 2007-05-09
EP1782934B1 EP1782934B1 (de) 2010-08-18

Family

ID=36919615

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06123346A Active EP1782934B1 (de) 2005-11-07 2006-11-02 Vorrichtung zur Herstellung von Produkten wie Beton oder Mörtel

Country Status (5)

Country Link
EP (1) EP1782934B1 (de)
AT (1) ATE477899T1 (de)
DE (1) DE602006016211D1 (de)
ES (1) ES2352210T3 (de)
FR (1) FR2892967B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3308866A1 (de) * 2016-10-13 2018-04-18 Pl2M Trichter, der mit einem sieb mit konvergierenden schrägflächen ausgestattet ist
BE1024916B1 (nl) * 2017-06-13 2018-08-09 De Rycke Gebroeders Nv Werkwijze voor het vervaardigen van betonspecie middels een drijvende betoncentrale

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2030747A (en) * 1933-01-23 1936-02-11 Machinery Company Const Timer for concrete mixers
JPS58205534A (ja) * 1982-05-26 1983-11-30 Kayaba Ind Co Ltd ミキサ車の添加剤計量注入装置
FR2843313A1 (fr) 2002-08-09 2004-02-13 Lancy Mixjet Dispositif de preparation d'un melange, notamment pour machine a projeter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2030747A (en) * 1933-01-23 1936-02-11 Machinery Company Const Timer for concrete mixers
JPS58205534A (ja) * 1982-05-26 1983-11-30 Kayaba Ind Co Ltd ミキサ車の添加剤計量注入装置
FR2843313A1 (fr) 2002-08-09 2004-02-13 Lancy Mixjet Dispositif de preparation d'un melange, notamment pour machine a projeter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 008, no. 046 (C - 212) 29 February 1984 (1984-02-29) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3308866A1 (de) * 2016-10-13 2018-04-18 Pl2M Trichter, der mit einem sieb mit konvergierenden schrägflächen ausgestattet ist
BE1024916B1 (nl) * 2017-06-13 2018-08-09 De Rycke Gebroeders Nv Werkwijze voor het vervaardigen van betonspecie middels een drijvende betoncentrale

Also Published As

Publication number Publication date
FR2892967A1 (fr) 2007-05-11
ATE477899T1 (de) 2010-09-15
ES2352210T3 (es) 2011-02-16
FR2892967B1 (fr) 2008-02-08
DE602006016211D1 (de) 2010-09-30
EP1782934B1 (de) 2010-08-18

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