EP0738571B1 - Appareil pour alimenter une phase solide dans une chambre de mélange, pour machines à mélanger de mortier de plâtre ou de coulis - Google Patents

Appareil pour alimenter une phase solide dans une chambre de mélange, pour machines à mélanger de mortier de plâtre ou de coulis Download PDF

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Publication number
EP0738571B1
EP0738571B1 EP96830220A EP96830220A EP0738571B1 EP 0738571 B1 EP0738571 B1 EP 0738571B1 EP 96830220 A EP96830220 A EP 96830220A EP 96830220 A EP96830220 A EP 96830220A EP 0738571 B1 EP0738571 B1 EP 0738571B1
Authority
EP
European Patent Office
Prior art keywords
section
mixing
feeding
feeding unit
solid phase
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.)
Expired - Lifetime
Application number
EP96830220A
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German (de)
English (en)
Other versions
EP0738571A3 (fr
EP0738571A2 (fr
Inventor
Stefano Odorizzi
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.)
SPRAYMEC Srl
Original Assignee
SPRAYMEC Srl
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 SPRAYMEC Srl filed Critical SPRAYMEC Srl
Publication of EP0738571A2 publication Critical patent/EP0738571A2/fr
Publication of EP0738571A3 publication Critical patent/EP0738571A3/fr
Application granted granted Critical
Publication of EP0738571B1 publication Critical patent/EP0738571B1/fr
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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
    • B28C7/06—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 object of this invention is a feeding unit for the feeding of a solid mixing phase to a mixing chamber, for mortar, plasters and grout mixing machines.
  • the liquid phase is mixed with a solid phase, granulated or powdery, followed by the pressure projection of the fluid mixture which is obtained.
  • said machines are particularly used in the building field, whenever it is necessary to pressure project grouting mortar mixtures with binders, to obtain plasters, castings for walls and ceilings' facings, castings for the strengthening of old walls, injections and the like.
  • a solid phase granulated or powdery with a variable granulometry but usually less than 8 mm, for example sand and binders, is mixed with a liquid phase, generally water.
  • the batching of the two mixing phases has a great influence on the consistency of the mixture to be pumped and projected as well as on the physical and mechanical characteristics of the hardened plaster and it is therefore of the utmost importance that both mixing phases be accurately batched.
  • a first feeding unit for the batch feeding of the solid phase into the mixing chamber, requires a batching screw operated by a gearmotor. Said batching screw is set horizontally in a hollow casing with a filling inlet for the solid phase.
  • the inconvenience of this common feeding unit is that it foresees the installation of a gearmotor to operate the batching screw, which requires a considerable installation power.
  • the gearmotor greatly increases the overall weight of the feeding unit reducing its manoeuvrability, which is one of the qualities sought after by the operators of the machine onto which it is installed.
  • the batching screw is operated by a gear assembly, by means of the operating gearmotor of a mixer, therefore trying to exploit the operation of the mixing unit to move the members of the feeding unit. Further to this the batching screw has been placed obliquely whereby the solid phase is lifted towards the mixing chamber.
  • the main inconvenience of said feeding unit is its mechanical complexity due to the gear assembly since this expedient has not reduced the operating power also due to the fact that the solid phase is fed to the mixing chamber against the force of gravity.
  • a second common feeding unit the solid phase is fed by means of a rotating blade which pushes towards a filling inlet of the mixing chamber the solid phase contained in a truncated cone tank.
  • the rotating blade is operated by its own gearmotor, therefore even this feeding unit presents the same inconveniences outlined above due to the presence of a gearmotor.
  • Another inconvenience of this feeding unit consists in the fact that the tolerance between the sliding contact elements, that is between the rotating blade and the bottom of the tank, is a compromise between the optimal results which would be obtained if powdery solid phases were to be fed and the case in which a granulated solid phases were to be fed. It is therefore impossible to obtain a problemless operation because with a larger tolerance the mechanical wear is reduced but it is not possible to feed powdery solid phases, whereas with a smaller tolerance it is possible to feed powdery solid phases but the mechanical wear is greater.
  • a third common feeding unit is known from the document SU-A-1323398, which corresponds to the preamble of claim 1. It includes a charging hopper with a filling inlet for the feeding of the solid phase into the feeding unit and an outlet for the discharging of the solid phase into the mixing chamber and a motor vibrator, rigidly connected to said charging hopper so as to transmit to it its vibrating movement.
  • This feeding unit has a reduced installation power and is lighter than the other common feeding units due to the fact that both the power and the weight of the motor vibrator are inferior to those of a gearmotor.
  • the main object of this invention is to implement this third common feeding unit in order to have some more reduced installation power and in order to make it light and easy to handle, with uncomplicated maintenance, reduced dust making and low noise.
  • a feeding unit for the feeding of a solid mixing phase to a mixing chamber, for mortar, plasters and grout mixing machines, as defined in claim 1, due to the fact that the charging hopper consists of a first section, in which is situated the filling inlet, and a second section, rigidly connected to said motor vibrator in which is situated the outlet, the two sections being mutually translatable in a plane parallel to the motor vibrator's plane of action.
  • the first section is adequately fixed to the mortar, plasters and grout mixing machine and the second section is supported to the first section by means of numerous brackets, the brackets being respectively supported, with a clearance parallel to the motor vibrator's plane of action, by means of supports whic are respectively fixed to the first section and to the second section of the charging hopper.
  • This layout permits a simple and effective reciprocal movement of the two sections of the charging hopper.
  • an on-off valve for the solid phase can be positioned between the outlet and the mixing chamber. In this manner can be interrupted the feeding owing to the gravity of the solid phase, for example in the event of maintenance and cleaning.
  • the motor vibrator has a horizontal plane of action. In this manner the vibrations do not raise any dust when the solid phase is powdery.
  • Figure 1 schematically represents the assembly of a mortar, plasters and grout mixing machine, equipped with a feeding unit 1 for the feeding of a solid mixing phase 3 to a mixing chamber 5 according to this invention.
  • the means foreseen for the batch feeding of the liquid phase 2 to the mixing chamber 5 known means are foreseen, which may consist of, for example, a pump (not illustrated), a conduit 23 from the pump to the first feeding inlet 24 of the mixing chamber 5 and a member regulating the delivery of the liquid phase 2 (not indicated) positioned in the conduit 23.
  • the means 8 for the pressure projection of the fluid mixture are commonly used ones.
  • they may consist of an hourglass screw and worm gear pump 20, connected to the mixing chamber 5 near to an outlet 21 and operated by a gearmotor 18.
  • the mixing of the solid phase 3 and the liquid phase 2 takes place in the mixing chamber 5 by means of a mixer 6.
  • the mixer 6 can be, for example, an Archimedean screw which is operated by a gearmotor 18.
  • a feeding unit 1 for the feeding of a solid mixing phase 3 to the mixing chamber 5. It conprises of a motor vibrator 10 and a charging hopper 11 into which the solid phase 3 is delivered by means which are not indicated.
  • the charging hopper 11 is rigidly connected to the motor vibrator 10, so that the vibrations effected by the motor vibrator 10 are transmitted to it.
  • the charging hopper 11 consists of a first section 11' and a second section 11".
  • the first section 11' presents a filling inlet 13, through which the solid phase 3 to be mixed is delivered into the feeding unit 1, by means which are not indicated.
  • the second section 11" is rigidly connected to the motor vibrator 10 and presents an outlet 12 towards the mixing chamber 5 and in particular to a second feeding inlet 14 of the same.
  • the second sections 11' and 11" are conveniently translatable in a plane parallel to the motor vibrator's plane of action. In this manner only the second section 11", which is closer to the mixing chamber 5, shall effect the vibrations transmitted by the motor vibrator 10. Consequently only the solid phase 3 contained in the second section 11", that is the one being delivered into the mixing chamber 5, shall be shaken, whereas viceversa the solid phase on top of it, contained in the first section 11', shall drop, by gravity, into the free spaces left by the solid phase underneath.
  • brackets 15 are respectively supported, with a clearance parallel to the clearance of the motor vibrator's 10 plane of action, by supports 16' and 16". These supports are fixed to the first section 11' and the second section 11" of the charging hopper 11.
  • an on-off valve 17 may be disposed to interrupt the feeding of the solid phase.
  • This invention therefore fulfils the pre-established objects.
  • the unit may have a different shape and configuration than the one described above without in any case departing from the object of the present invention.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Accessories For Mixers (AREA)
  • Color Television Systems (AREA)

Claims (5)

  1. Appareil (1) pour alimenter une phase solide (3) dans une chambre de mélange (5), pour machines à mélanger de mortier de plâtre ou de coulis, comprenant:
    une trémie de chargement (11), présentant une ouverture de chargement (13) pour l'introduction de la phase solide (3) dans l'appareil d'alimentation (1) et une ouverture de versement (12) pour le versement de la phase solide (3) dans la chambre de mélange (5), et
    un vibrateur motorisé (10), relié rigidement à ladite trémie de chargement (11) pour transmettre à celle-ci son propre mouvement vibratoire,
    caractérisé par le fait que ladite trémie de chargement (11) est constituée d'une première partie (11'), présentant l'ouverture de chargement (13), et d'une seconde partie (11"), reliée rigidement audit vibrateur motorisé (10) et présentant l'ouverture de versement (12), les deux parties (11', 11") pouvant réciproquement translater dans un plan parallèle au plan d'action dudit vibrateur motorisé (10).
  2. Appareil selon la revendication 1, caractérisé par le fait que la première partie (11') est supportée par la machine à mélanger de mortier de plâtre ou de coulis et que la seconde partie (11") est supportée par la première partie (11') au moyen d'une pluralité de tiges (15), ces dernières étant respectivement supportées, avec une possibilité de jeu parallèlement au plan d'action dudit vibrateur motorisé (10), par des supports (16', 16") à leur tour fixés respectivement sur la première (11') et seconde partie (11") de ladite trémie de chargement (11).
  3. Appareil selon la revendication 1, caractérisé par le fait que dans la zone de proximité réciproque des deux parties (11', 11") sont disposés des joints (26) pour maintenir la phase solide (3) dans ladite trémie de chargement (11).
  4. Appareil selon la revendication 1, caractérisé par le fait qu'entre l'ouverture de versement (12) et ladite chambre de mélange (5) est disposée une valve d'interception (17) de la phase solide (3).
  5. Appareil selon la revendication 1, caractérisé par le fait que ledit vibrateur motorisé (10) présente un plan d'action horizontal.
EP96830220A 1995-04-20 1996-04-18 Appareil pour alimenter une phase solide dans une chambre de mélange, pour machines à mélanger de mortier de plâtre ou de coulis Expired - Lifetime EP0738571B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBZ950025 1995-04-20
IT95BZ000025A IT1281275B1 (it) 1995-04-20 1995-04-20 Gruppo di alimentazione della fase solida di miscelazione ad una camera di miscelazione,in macchine per la preparazione di malte,

Publications (3)

Publication Number Publication Date
EP0738571A2 EP0738571A2 (fr) 1996-10-23
EP0738571A3 EP0738571A3 (fr) 1997-03-19
EP0738571B1 true EP0738571B1 (fr) 2001-07-11

Family

ID=11346694

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96830220A Expired - Lifetime EP0738571B1 (fr) 1995-04-20 1996-04-18 Appareil pour alimenter une phase solide dans une chambre de mélange, pour machines à mélanger de mortier de plâtre ou de coulis

Country Status (4)

Country Link
EP (1) EP0738571B1 (fr)
DE (1) DE69613746T9 (fr)
ES (1) ES2160795T3 (fr)
IT (1) IT1281275B1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104985700B (zh) * 2015-07-22 2017-09-12 山推建友机械股份有限公司 纤维称量输送装置
CN106346615B (zh) * 2016-09-27 2018-08-31 重庆龙健金属制造有限公司 一种带有捣碎功能的搅拌装置
CN109571767B (zh) * 2018-12-07 2020-08-18 湖南拓沃重工科技有限公司 一种混凝土上料、配料、搅拌装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1560480A (fr) * 1968-01-18 1969-03-21
DE2316558A1 (de) * 1973-04-03 1974-10-24 Erich August Hindermann Dosier-, misch- und foerdergeraet
CH649476A5 (it) * 1981-10-23 1985-05-31 Water Line Sa Apparecchiatura per miscelare e omogeneizzare in continuo sostanze in polvere con sostanze liquide.
SU1323398A1 (ru) * 1986-01-27 1987-07-15 Могилевский Машиностроительный Институт Вибросмеситель

Also Published As

Publication number Publication date
DE69613746T2 (de) 2002-05-02
DE69613746D1 (de) 2001-08-16
ES2160795T3 (es) 2001-11-16
DE69613746T9 (de) 2004-10-14
ITBZ950025A0 (it) 1995-04-20
IT1281275B1 (it) 1998-02-17
EP0738571A3 (fr) 1997-03-19
EP0738571A2 (fr) 1996-10-23
ITBZ950025A1 (it) 1996-10-20

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