EP0594237A2 - Mischvorrichtung für hochviskose Substanzen - Google Patents

Mischvorrichtung für hochviskose Substanzen Download PDF

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Publication number
EP0594237A2
EP0594237A2 EP93202827A EP93202827A EP0594237A2 EP 0594237 A2 EP0594237 A2 EP 0594237A2 EP 93202827 A EP93202827 A EP 93202827A EP 93202827 A EP93202827 A EP 93202827A EP 0594237 A2 EP0594237 A2 EP 0594237A2
Authority
EP
European Patent Office
Prior art keywords
barrel
mixing
substances
roller
mixing roller
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
EP93202827A
Other languages
English (en)
French (fr)
Other versions
EP0594237A3 (en
EP0594237B1 (de
Inventor
Carlo Musso
Giuliano Cigna
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.)
Flora Mirella
Original Assignee
Flora Mirella
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 Flora Mirella filed Critical Flora Mirella
Publication of EP0594237A2 publication Critical patent/EP0594237A2/de
Publication of EP0594237A3 publication Critical patent/EP0594237A3/fr
Application granted granted Critical
Publication of EP0594237B1 publication Critical patent/EP0594237B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/805—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis wherein the stirrers or the receptacles are moved in order to bring them into operative position; Means for fixing the receptacle
    • B01F27/806—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis wherein the stirrers or the receptacles are moved in order to bring them into operative position; Means for fixing the receptacle with vertical displacement of the stirrer, e.g. in combination with means for pivoting the stirrer about a vertical axis in order to co-operate with different receptacles
    • 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
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/83—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis the stirrers being additionally moved radially, or oscillating about an axis perpendicular to the stirrer axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F29/00—Mixers with rotating receptacles
    • B01F29/80—Mixers with rotating receptacles rotating about a substantially vertical axis
    • B01F29/87—Mixers with rotating receptacles rotating about a substantially vertical axis with rotary cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/10—Maintenance of mixers
    • B01F35/12—Maintenance of mixers using mechanical means
    • B01F35/121—Maintenance of mixers using mechanical means using a brush for cleaning out rests of products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/10—Maintenance of mixers
    • B01F35/145—Washing or cleaning mixers not provided for in other groups in this subclass; Inhibiting build-up of material on machine parts using other means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/10—Maintenance of mixers
    • B01F35/145—Washing or cleaning mixers not provided for in other groups in this subclass; Inhibiting build-up of material on machine parts using other means
    • B01F35/1452—Washing or cleaning mixers not provided for in other groups in this subclass; Inhibiting build-up of material on machine parts using other means using fluids
    • B01F35/1453—Washing or cleaning mixers not provided for in other groups in this subclass; Inhibiting build-up of material on machine parts using other means using fluids by means of jets of fluid, e.g. air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B1/00—Cleaning by methods involving the use of tools
    • B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
    • B08B1/16—Rigid blades, e.g. scrapers; Flexible blades, e.g. wipers
    • B08B1/165—Scrapers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/02—Manually-operable devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/02—Ducts, containers, supply or metering devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B1/00—Cleaning by methods involving the use of tools
    • B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
    • B08B1/12—Brushes

Definitions

  • the present invention relates to a device suitable for carrying out the mixing of substances having a high viscosity.
  • a particularly significant example, however not limiting, of substances for the mixture of which the device according to the invention is suitable, is represented by inks for offset printing, to which particular reference will be made in the following description.
  • this operation is carried out by mixing devices making use of mixing members in the form of a butterfly, rotated in the mass of the inks to be mixed, or else by mixers of the type of kneading machines for bread making, or else still by other devices which, however, do not have a high efficiency in the operation and, after use, pose serious problems for their cleaning, which must be carried out by hand with considerable difficulty.
  • Another problem with inks is that, upon contact with oxygen in the air, they are subject to oxidation and give rise to hardened films and persistent bubbles which then cause inconvenience.
  • One of the main aims of this invention is therefore to provide a mixing device capable of working with high efficiency, and consequently in relatively short times and reaching very complete degrees of mixing, also substances having high viscosity and adhesiveness, such than, in particular, inks for offset printing.
  • Another object is to produce such a device which can be cleaned by simple operations and, at least in large part, capable of being mechanized.
  • Another object is to produce such a device having such conformations that it does not pose serious problems for enclosing the functional parts in an environment out of contact with the atmosphere, in cases where such a requirement arises.
  • Another object of the invention is to provide a device which works by its very nature in a way which tends to expel the air contained in the substances worked.
  • a mixing device comprising: at least one mixing roller; means for supporting said mixing roller by allowing it to rotate about a vertical axis and to be raised and lowered in and out of a cylindrical drum containing the substances to be mixed, as well as to be moved in the radial direction in said cylindrical barrel; means for supporting said cylindrical barrel by allowing it to rotate about a vertical axis; and motor means for actuating said movements of the mixing roller and of the barrel; this assembly being arranged so that said mixing roller and said barrel are rotated; said mixing roller, first raised to allow the installation of the barrel containing the substances to be mixed, is lowered by entering the barrel in an approximately central position and by immersing in the substances to be mixed; then said mixing roller achieves mixing by the combined action of its own rotation and of the rotation of the barrel, moving during said operation towards the periphery, approaching the walls of the barrel, so as to subject the substances to be mixed to crushing , lamination and stretching in all regions of the barrel; finally the mixing roller again takes
  • the device further comprises a second mixing roller, parallel to the first roller and supported at a variable distance therefrom, and during the operation also the distance between the two mixing rollers is reduced, thus subjecting the substance to be mixed. also for lamination and stretching in the region between the two mixing rollers.
  • the mixing operation does not take place by simple displacement of moving parts in the mass of the substance to be mixed, as in known devices, but by a lamination and stretching action similar to that which , in a known manner, is carried out in three-cylinder machines for the production of viscous inks, and therefore with a particularly high yield.
  • a particularly perfect mixture is achieved, in a relatively short time and by a relatively reduced energy consumption, as well as an effective action of expelling the air possibly contained in the worked substances .
  • the device further comprises a cleaning device suitable for co-operating with said mixing roller during its extraction from the mixed substance, to detach from it at least most of the substance which remains adherent to said roller.
  • the extremely simple shape of the mixing members constituted by one or more rollers, makes it possible to carry out cleaning thereof, at the end of the operation, simultaneously with their lifting, by means of simple cleaning devices, comprising a doctor blade or else an air knife jet, arranged around the rollers, so that, when they reach their raised position, the rollers are already largely cleaned, on them remaining only a film or veil of substance to take away.
  • simple cleaning devices comprising a doctor blade or else an air knife jet, arranged around the rollers, so that, when they reach their raised position, the rollers are already largely cleaned, on them remaining only a film or veil of substance to take away.
  • the device also comprises a tank, disposed in the vicinity of the position provided for the barrel, containing a solvent or a detergent, in which the mixing roller can be lowered after the mixing operation.
  • Said tank can also contain cleaning means, such as brushes or the like.
  • the simple conformation of the mixing members and the possibility of supporting them on a supported plate, during the mixing operation, on the upper edge of the barrel containing the substances to be mixed make it possible to establish, in a relatively easy manner. , the seal between said plate and the barrel, and therefore apply a vacuum inside thereof, and possibly introduce an inert gas.
  • the invention also relates to the mixing process carried out by the mixing device according to the invention.
  • An object of the invention is also to perfect a barrel intended to be treated in a mixing device, to perform in the best conditions the extraction of the barrel of the mixed substance.
  • the device according to the invention comprises a frame 1 provided with means, such as a roller belt 2, for handling the drums 3 containing the substances to be mixed.
  • a rotating platform 4 actuated by a motor 5 by means of a transmission 6 is intended to support the barrel 3 during work, by putting it in rotation.
  • the frame 1 carries longitudinal guides 7 by which is supported a movable structure comprising a plate 8, intended to rest on the mouth of the barrel 3, and uprights 9, to the 'upper end of which is installed a motor unit 10.
  • the latter is operatively connected to vertical screws 11 engaged in female screws of a console 12 which carries the mixing members and which, in this way, can be lifted up to the position shown by broken lines at 12 'in Figure 2, and can be lowered to the operative position, shown by continuous lines.
  • the organs mixers are two and they are constituted by two parallel rollers 13 of a relatively small diameter.
  • the pair of rollers 13 can also be replaced by a roller 13 'only.
  • the single mixing roller has a relatively large diameter, for example half the inside diameter of the barrel 3.
  • the following description refers to the embodiment comprising two mixing rollers 13, but it will be clear for the skilled in the art as the structures described must be simplified in the case where one uses a mixing roller 13 'only, and also as they must be supplemented in the case where one makes use of more than two mixing rollers .
  • Each mixing roller 13 is supported rotating by a carriage 14 which can be moved transversely on the support plate 12.
  • the transverse movements of each carriage 14 are controlled by a motor means, not shown, which can be constituted by an electric motor or by a hydraulic or pneumatic cylinder, for moving the corresponding mixing roller 13 in a radial direction, relative to the barrel 3 and relative to the other mixing roller 13.
  • motor units 15 connected to the mixing rollers 13 for activate their working rotation.
  • a cleaning means 16 (FIG. 2), constituted by a doctor blade and / or by a nozzle capable of blowing an air gap, for example according to the request of Italian patent No. TO 91 A 000791.
  • a washing tank 17 for the final cleaning of the rollers mixers.
  • the device described operates as follows. While the mixing rollers are in their raised position (from which the drawings show by broken lines only the console 12 'and the motor 15'), approximately centered with respect to the rotating platform 4, a barrel 3 containing the substances to be mixed is carried, along the roller conveyor 2, to the rotating platform 4, and this is rotated by means of the motor 5. If necessary, a seal is established between the support plate 8 and the mouth of the barrel 3, in order to be able to extract the oxygen and introduce an inert gas into the interior of the barrel 3. The mixing rollers 13, rotated by their respective motors 15, are then immersed in the barrel 3 and in the substances to be mixed, by lowering the console 12 by means of the motor 10 and the screws 11.
  • a similar action takes place between the mixing roller closer to the wall of the barrel 3, and the wall itself.
  • the mixing rollers 13 are moved, by means of the carriages 14, in a radial direction relative to the rotating barrel, so that any region of the substances to be mixed contained in the barrel is reached by the mixing action. , and the crushing, lamination and stretching action exerted between a mixing roller and the barrel wall increases as the distance between these two parts is reduced. This phenomenon is essential, in particular, in the case where use is made of a roller 13 only.
  • the mutual distance between these rollers can be adjusted to a preferred value and kept constant, or else, and preferably, it too is reduced in time, by surrounding the rollers to make the action more intense as it continues.
  • the radial movement of the mixing rollers can take place only once, or it can be repeated two or more times, periodically moving the rollers again towards the center.
  • the rollers 13 are again brought to a substantially central position, the rotation barrel 3 can be stopped and the mixing rollers 13 are removed from the now mixed substance, by lifting the console 12 by means of the motor 10 and the screws 11. During this lifting, one activates, for example by surrounding them with the mixing rollers , the cleaning means 16, which detach mixing rollers 13, which pass through them, most of the viscous substance which adheres thereto, by causing it to fall into the barrel 3.
  • the central position of the rollers 13 during this phase of the operation gives assurance that the substances flowing from the rollers are collected by the drum 3 without contaminating the surrounding medium.
  • the mixing rollers thus reach their raised position under a considerable, although not complete, cleaning condition.
  • the support plate 8 with all the members which it supports is moved along the guides 7 until the mixing rollers 13 are placed on the tray 17 containing a solvent or a detergent and, where appropriate, cleaning means such as brushes or the like, and the mixer rollers 13 are lowered into this tray.
  • cleaning means such as brushes or the like
  • the emptying of the mixed substance from the barrel 3 is usually carried out by inserting a piston 18 from the top into the barrel 3 (FIG. 5) and by opening an opening, constituted by a cylindrical hole, in the bottom of the barrel 3.
  • a piston 18 from the top into the barrel 3 (FIG. 5) and by opening an opening, constituted by a cylindrical hole, in the bottom of the barrel 3.
  • the flow leaving through a simple hole in the barrel can easily incorporate or keep gas bubbles which then become harmful.
  • the invention also provides an improvement to the means for discharging the barrel of the mixed substance. This improvement is shown in Figures 4 and 5.
  • the bottom 19 of the improved barrel 3 has a wide opening below, which is normally closed by a flap 20, conical or flat, pushed by a spring 21.
  • a flap 20 conical or flat, pushed by a spring 21.
  • the force of the spring 21 is overcome and the valve 20 opens slightly, allowing the contents of the barrel to exit.
  • the opening through which the viscous substance passes therefore has the form of a thin slit, and the high shear forces to which the viscous substance is subjected while passing through the slit cause the rupture of any gas bubble which may be present.
  • the mixed substance, delivered in the form of a laminar jet can be taken from the barrel in the best conditions for its use or for further processing, for example for making up.
  • the characteristics of the various viscous substances to be mixed, as well as their quantities, can be very variable, and as a function of these, the structure and operating parameters of the device according to the invention must be chosen in an appropriate manner.
  • the diameter of the mixing rollers must be chosen according to the diameter of the drums to be treated, the number of mixing rollers installed and the characteristics of the substances worked.
  • the number of rollers used depends either on the difficulties opposed to mixing by the substances to be treated, or on the working times available.
  • the angular speeds and the directions of rotation (equal or opposite) of the barrel and of the mixing roller (s) can also vary to obtain the best results, and for this purpose it is advantageous that the motors actuating these parts are provided with suitable control means. .

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Mixers With Rotating Receptacles And Mixers With Vibration Mechanisms (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
EP93202827A 1992-10-19 1993-10-05 Mischvorrichtung für hochviskose Substanzen Expired - Lifetime EP0594237B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO920838A IT1256972B (it) 1992-10-19 1992-10-19 Dispositivo mescolatore per sostanze aventi elevata viscosita.
ITTO920838 1992-10-19

Publications (3)

Publication Number Publication Date
EP0594237A2 true EP0594237A2 (de) 1994-04-27
EP0594237A3 EP0594237A3 (en) 1994-09-14
EP0594237B1 EP0594237B1 (de) 1997-02-26

Family

ID=11410788

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93202827A Expired - Lifetime EP0594237B1 (de) 1992-10-19 1993-10-05 Mischvorrichtung für hochviskose Substanzen

Country Status (5)

Country Link
EP (1) EP0594237B1 (de)
AT (1) ATE149092T1 (de)
DE (1) DE69308260T2 (de)
ES (1) ES2099897T3 (de)
IT (1) IT1256972B (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2907690A1 (fr) * 2006-10-25 2008-05-02 Inst Francais Du Petrole Dispositif et methode pour effectuer un melange en basse energie
ITTO20080808A1 (it) * 2008-10-31 2010-05-01 Dromont S P A Dispositivo di miscelazione per prodotti fluidi contenuti in contenitori sostanzialmente rigidi e metodo associato.
ITPD20100063A1 (it) * 2010-03-03 2011-09-04 Luca Montagnin Macchina mescolatrice per pasticceria
CN112371037A (zh) * 2020-10-29 2021-02-19 德清世锦智能科技有限公司 一种建筑施工用材料研磨搅拌装置
CN112371263A (zh) * 2020-12-04 2021-02-19 安徽华塑股份有限公司 一种电石渣连续作业式处理系统

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108704557A (zh) * 2018-07-18 2018-10-26 芜湖青悠静谧环保科技有限公司 一种新型实验室粉末振动台

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE466293C (de) * 1927-05-12 1928-10-03 Wilhelm Rinau Knet- und Mischmaschine, insbesondere fuer fluessige, mit pulverigen oder koernigen Stoffen durchsetzte Massen
DE1026282B (de) * 1950-10-18 1958-03-20 August W Kort Misch-, Ruehr- und Knetmaschine fuer misch- und knetfaehige Massen mit einem Behaelter und einem darin in Drehung versetzbaren Werkzeug
FR1465170A (fr) * 1965-01-21 1967-01-06 Bostik Sa Procédé et machine pour mélanger des matières visqueuses
JPS55159833A (en) * 1979-05-30 1980-12-12 Citizen Watch Co Ltd Rotary type kneading machine
JPS59179137A (ja) * 1983-03-30 1984-10-11 Shigeru Murakoshi 流動組成物用撹拌発泡羽根

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE466293C (de) * 1927-05-12 1928-10-03 Wilhelm Rinau Knet- und Mischmaschine, insbesondere fuer fluessige, mit pulverigen oder koernigen Stoffen durchsetzte Massen
DE1026282B (de) * 1950-10-18 1958-03-20 August W Kort Misch-, Ruehr- und Knetmaschine fuer misch- und knetfaehige Massen mit einem Behaelter und einem darin in Drehung versetzbaren Werkzeug
FR1465170A (fr) * 1965-01-21 1967-01-06 Bostik Sa Procédé et machine pour mélanger des matières visqueuses
JPS55159833A (en) * 1979-05-30 1980-12-12 Citizen Watch Co Ltd Rotary type kneading machine
JPS59179137A (ja) * 1983-03-30 1984-10-11 Shigeru Murakoshi 流動組成物用撹拌発泡羽根

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 5, no. 35 (C-46) (707) 5 Mars 1981 & JP-A-55 159 833 (CITIZEN TOKEI K.K.) 12 Décembre 1980 *
PATENT ABSTRACTS OF JAPAN vol. 9, no. 32 (C-265) (1755) 9 Février 1985 & JP-A-59 179 137 (SHIGERU MURAKOSHI) 11 Octobre 1984 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2907690A1 (fr) * 2006-10-25 2008-05-02 Inst Francais Du Petrole Dispositif et methode pour effectuer un melange en basse energie
ITTO20080808A1 (it) * 2008-10-31 2010-05-01 Dromont S P A Dispositivo di miscelazione per prodotti fluidi contenuti in contenitori sostanzialmente rigidi e metodo associato.
EP2181779A1 (de) 2008-10-31 2010-05-05 Dromont S.p.A. Vorrichtung zum Mischen von sich in im wesentlichen starren Behältern befindlichen fluiden Produkten und zugehöriges Verfahren
ITPD20100063A1 (it) * 2010-03-03 2011-09-04 Luca Montagnin Macchina mescolatrice per pasticceria
CN112371037A (zh) * 2020-10-29 2021-02-19 德清世锦智能科技有限公司 一种建筑施工用材料研磨搅拌装置
CN112371263A (zh) * 2020-12-04 2021-02-19 安徽华塑股份有限公司 一种电石渣连续作业式处理系统

Also Published As

Publication number Publication date
ATE149092T1 (de) 1997-03-15
EP0594237A3 (en) 1994-09-14
DE69308260D1 (de) 1997-04-03
IT1256972B (it) 1995-12-27
ES2099897T3 (es) 1997-06-01
ITTO920838A1 (it) 1994-04-19
DE69308260T2 (de) 1997-08-28
EP0594237B1 (de) 1997-02-26
ITTO920838A0 (it) 1992-10-19

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