EP2181779B1 - Device for mixing fluid products contained in substantially rigid containers and associated method - Google Patents

Device for mixing fluid products contained in substantially rigid containers and associated method Download PDF

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Publication number
EP2181779B1
EP2181779B1 EP09013401.6A EP09013401A EP2181779B1 EP 2181779 B1 EP2181779 B1 EP 2181779B1 EP 09013401 A EP09013401 A EP 09013401A EP 2181779 B1 EP2181779 B1 EP 2181779B1
Authority
EP
European Patent Office
Prior art keywords
motor
mixing
blade
fluid
container
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.)
Active
Application number
EP09013401.6A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2181779A1 (en
Inventor
Luca Drocco
Mario Drocco
Matteo Drocco
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.)
DROMONT SpA
Original Assignee
DROMONT SpA
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Publication date
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Publication of EP2181779A1 publication Critical patent/EP2181779A1/en
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Publication of EP2181779B1 publication Critical patent/EP2181779B1/en
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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
    • 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
    • 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 refers to the field of fluid product processing and in detail it refers to a device for mixing fluid products contained in substantially rigid containers and to the associated method.
  • Mixing devices for allowing the mixing of the components of the fluid products are known. These devices act through a blade, typically helix-shaped, that is immersed into a substantially rigid container that is at least partially filled with the fluid to be mixed.
  • the devices for mixing fluids of known kind once the mixing process has been started, provide for the immersion of the blade into the container and then mix the fluid itself for a predetermined period.
  • the mixing time can be defined according to the kind of the fluid used, in such a way as not to oblige to purchase more different devices for each typology of fluid used.
  • the devices for mixing fluid products contained in substantially rigid containers typically do not allow for an efficient washing of the blade at the end of the fluid mixing operation.
  • the blade-washing procedure in particular for fluids such varnishes or similar having different colors, is particularly important for preventing the contamination of the successive fluid product to be mixed with the residuals of the preceding fluid.
  • the patent application EP0594237 describes a mixing device in accordance with the preamble of claim 1 and a method of mixing using the mixing device, the mixing device comprising at least one cleaning means adapted to clean the mixing blade.
  • the purpose of the present invention is to realize a device for mixing fluid products contained in substantially rigid containers, that is free from the above described disadvantages.
  • a device for mixing fluid products contained in substantially rigid containers is realized according to the claim number one.
  • Another purpose of the present invention is to provide a method of mixing a fluid contained into partially rigid containers that solves the above described disadvantages.
  • a device for mixing fluid products contained in substantially rigid containers is generally designated with the reference number 1.
  • the device 1 comprises:
  • the frame 2 is realized with preferably metallic material section bars and anyhow sufficiently rugged for bearing the weight of the device 1, and its shape is such as to substantially determine the overall dimensions of the device itself.
  • the device 1 In the lower part of the device 1 there is a plurality of supporting feet 2a, for separating the frame 2 from the ground; these supporting feet 2a are adjustable in height in such a way as to allow for steadily leaning the device 1 on a floor or on the ground even not perfectly plane.
  • the first motor 3 preferably of electrical supply type, is coupled to a rotating shaft 3a having a first and a second end; the first end protrudes into the first motor 3, whereas the second end is fixed to the mixing blade 6 in such a way that the rotating shaft 3a and the mixing blade 6 itself integrally rotate.
  • the coupling with the rotating shaft 3a can be direct or through speed reduction means.
  • the carriage 4 is movable between a first position of use and a second position of use.
  • the carriage 4 In the first position of use, shown in figures 1-3 , the carriage 4 is arranged in proximity of a first side of the device 1; the first position of use is the one wherein the mixing of the fluid contained into the container 10 is made.
  • the carriage 4 arranges in proximity of a second side opposed to the first; in the second position of use the washing of the mixing blade 6 is made into a washing tank 12, having a basis positioned at an height substantially equal to the height of the supporting plane 9.
  • the first motor 3 is also movable in vertical direction. This allows for inserting the fluid container 10 under the mixing blade 6, before the mixing of the fluid itself, thus inserting the container 10 on the supporting plane 9.
  • the device 1 comprises a front plane 13, positioned on the front part of the device itself and substantially horizontally positioned.
  • This front plane 13 possesses a plurality of idle mounted rollers 13a, substantially oriented in a direction orthogonal to the movement direction of the carriage 4, that allow for easily translating the container 10 filled with liquid.
  • the front plane 13 protrudes for the maximum part outside of the frame 2, and therefore it is separated from the interior of it.
  • this representation is made for allowing the representation of the interior of the device 1; however, around the frame 2, that is dotted represented, a plurality of opportunely shaped paintings is arranged, for insulating the interior of the frame 2 from the surrounding environment.
  • These paintings have primarily a protection purpose during the use of the device in such a way as to prevent that during the mixing the fluid does not splash outside the device 1, but they can be provided with flame proof or noise absorbent coverings.
  • the interior of the frame 2 can be entered from the front plane 13 through a sliding door 14, that substantially horizontally slides on a pair of guides, which is movable between a first closed position and a second open position. Once it is opened, the sliding door 14 allows for entering into an area vertically coincident to the first position of use of the carriage 4. The sliding door 14 is therefore positioned in proximity of the supporting plane 9.
  • the dimension of the sliding door 14 is such to allow for the passage of the container of the fluid to be mixed, and in particular, during the planning phase of the device 1, it is designed in such a way as to allow for the passage of the biggest container upon which the device 1 can operate.
  • the supporting plane 9 can move.
  • the supporting plane 9 can horizontally translate on two substantially orthogonal directions, through the movement imposed by the fourth motor 11.
  • the stroke that the supporting plane 9 can perform is defined according to the type of fluid container 10 during the planning phase of the device 1, and is limited by one or more position sensors or limit stops of known kind, which send electrical signals to the hardware and/or software control system 14, such that when the end of the abovementioned stroke is reached, the motor 11 is stopped and successively rotated in inverse direction.
  • the first motor 3 is raised in such a way as to allow for surpassing the lateral walls of the washing tank 12 without interfering with it.
  • the carriage 4 In the second position of use the carriage 4 is in a position such that to position the mixing blade 6 substantially over the washing tank 12.
  • a brush 15 having a plurality of bristles, whose purpose is to clean the mixing blade 6 and the part of the rotating shaft 3a that is in contact with the fluid present into the container 10; this brush 15 operates therefore in such a way as to substantially remove all the quantity of fluid possibly left in contact with the shaft 3a and the mixing blade 6 itself because of the viscosity and the adhesiveness.
  • the washing tank 12 also contains washing liquid which can be water or water added with detergent.
  • the device 1 is optionally provided with a water and/or detergent entry device into the washing tank 12.
  • the brush 15 is fixed to a connection clamp 15a, which possesses a first end pivoted on a shaft 16 and rotates around it and a second end to which the brush 15 is rigidly fixed. Therefore, during the use, the brush 15 is movable between a first position of use and a second position of use switchable between them; in detail in the first position the brush 15 is positioned in such a way as not to interfere neither with the rotating shaft 3a nor with the mixing blade 6 during the descent into the washing tank 12.
  • the brush 15 is rotated around the axis 16 and arranges in the second position in such a way as to interfere with them through the bristles it is provided with.
  • the first motor 3 For carrying out the cleaning of the mixing blade 6 and of the rotating shaft 3a, the first motor 3 is operated for a predefined time by a control system 14; at the end of a time period set on the control system 14 for the cleaning, the first motor 3 is stopped and lifted up, in such a way as to enable the mixing blade 6 to translate again toward the first position of use.
  • the device 1 comprises a plate for the collection of drops 20, which is pivoted around a vertical axis 21 and moved by its sixth motor 22, in such a way as to rotate at a predetermined angle.
  • the plate for the collection of drops 20 allows for preventing that fluid drops possibly left on the mixing blade 6 and on the part of the shaft 3a immersed into the fluid itself can fall on the floor during the translation of the carriage 4 between the first and the second position of use.
  • the plate for the collection of drops 20 is constrained to the carriage 4 in such a way as to move with it and, when rotated, to remain always under the mixing blade 6.
  • the movement of the motors present within the device 1 is managed by an hardware and/or software electronic system 14, which controls both the rotation speed of the motors and the duration of their rotation; the hardware and/or software electronic system 14 connects and disconnects all the motors of the device 1 from a mains supply (not shown) which, according to the application of the device, of the power and of the country within which it works, can be the traditional domestic supply net at 220V or, for example, industrial three-phase supplies at 380V; furthermore the hardware and/or software control 14 has a memory for containing a functioning routine of the device 1.
  • control system 14 supervises the operations of the device 1 in its complex.
  • this sensor of presence 17 is arranged substantially in front of the sliding door 14 into the frame 2, in a rear area of the device 1.
  • the orientation of the sensor of presence 17 is such that its action radius comprises the area within which the container 10 is positioned, therefore over the supporting plane 9.
  • control system 14 performs the following operations.
  • the control system 14 commands the second motor 7 in such a way as to position the carriage 4 on the first position of use, substantially above the container 10, successively lowering the first motor 3 in such a way as to immerse the mixing blade 6 into the fluid contained in the container 10.
  • the first motor 3 is lowered for a predetermined time memorized into the control system 14.
  • the brush 15 is positioned in rest position or, if it is already in it, it is kept in this position.
  • the plate for the collection of drops 20 is remotely positioned with respect to the mixing blade 6, in such a way as not to interfere with the rotation and, equally, not to interfere with the fluid container 10.
  • control system 14 starts the first motor 3, which according to the mixing function selected by the user through the keyboard of the user-interface device 16, can:
  • the supporting plane 9 can horizontally move or alternatively remain fixed in longitudinal or transversal direction with respect to the position of the first motor 3.
  • the supporting plane 9 if it has moved, returns to the starting position and the first motor 3 is lifted up and stopped.
  • the carriage 4 is moved up to the second position of use, for allowing the cleaning of the mixing blade 6 and of the part of the rotating shaft 3a that is in contact with the fluid.
  • the plate for the collection of drops 20 is brought under the mixing blade 6 through a rotation of the axis 21.
  • control system 14 commands the lowering of the first motor 3 into the washing tank 12 and, successively, the movement of the brush 15 around the shaft 16, in such a way as to be in contact, through its bristles, with the mixing blade 6 and the rotating shaft 3a.
  • the plate for the collection of drops 20 is moved into a remote position with respect to the vertical with the mixing blade 6.
  • control system 14 commands the activation of the first motor 3, for a predetermined time that is fixed during the planning phase of the device 1 but that, equally, can be modified by the user before the beginning of the work cycle of the device itself, acting on the user-interface device 16.
  • the device 1 for mixing fluid products contained in substantially rigid containers allows for carrying out the mixing of fluid products such that there are no parts less efficiently mixed with respect to the others, in particular in case of very viscous fluids contained in non-cylindrical containers.
  • the movement of the bearing plane upon which the container is positioned allows for carrying out a uniform mixing even if the container has particular shapes.
  • the device 1 described up to this point allows for carrying out the washing of the mixing blade and of the part of the rotating shaft that are in contact with the fluid during the mixing operations. This allows for mixing different fluids in two successive time periods, without the need of handily cleaning the mixing blade; this operation is automatically carried out at the end of the fluid mixing session.
  • the device 1 thus reduces the quantity of human effort necessary for ensuring that it correctly works.
  • the device 1 previously described allows for preventing that some fluid drops, during the movement of the mixing blade from the fluid container to the washing tank, fall on the floor under the device or on other inner parts of the device.
  • rollers 13a can be of non-idle kind, but moved through another electric motor that operates them through for example a belt system.
  • the hardware and/or software control system can be provided, in place of a display and of a keyboard, with a touch-screen which allows for integrating in an unique block the function of visualization of the status and of the functioning of the device and the entering of commands from a user.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
EP09013401.6A 2008-10-31 2009-10-23 Device for mixing fluid products contained in substantially rigid containers and associated method Active EP2181779B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITTO2008A000808A IT1391689B1 (it) 2008-10-31 2008-10-31 Dispositivo di miscelazione per prodotti fluidi contenuti in contenitori sostanzialmente rigidi e metodo associato.

Publications (2)

Publication Number Publication Date
EP2181779A1 EP2181779A1 (en) 2010-05-05
EP2181779B1 true EP2181779B1 (en) 2016-03-16

Family

ID=41119491

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09013401.6A Active EP2181779B1 (en) 2008-10-31 2009-10-23 Device for mixing fluid products contained in substantially rigid containers and associated method

Country Status (3)

Country Link
EP (1) EP2181779B1 (es)
ES (1) ES2582561T3 (es)
IT (1) IT1391689B1 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118122199A (zh) * 2024-05-08 2024-06-04 山西雅美德印刷科技有限公司 一种印刷油墨加工用混匀调色设备

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106733840B (zh) * 2016-12-21 2019-01-04 徐州市苏文机械设备制造有限公司 一种稀土开采机高效清理装置
CN111644416B (zh) * 2020-06-12 2021-07-23 本溪市聚鑫达矿业有限公司 一种矿石机械加工清洗设备

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7504248A (en) * 1975-04-09 1976-10-12 Nautamix Patent Ag Cleaning vessel with mixing screws - without using liquids or compressed air to remove residual powder from screws and vessel wall
IT1256972B (it) * 1992-10-19 1995-12-27 Carlo Musso Dispositivo mescolatore per sostanze aventi elevata viscosita.
DE10052400C1 (de) * 2000-10-21 2002-01-31 Rudolf Plosl Vorrichtung zum Abstellen und Reinigen von Handrührgeräten
DE102006054622B4 (de) * 2006-11-17 2014-01-09 Grammer Aktiengesellschaft Vorrichtung zum Reinigen eines Mischkopfes einer Anlage zum Befüllen von Kunststoffformen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118122199A (zh) * 2024-05-08 2024-06-04 山西雅美德印刷科技有限公司 一种印刷油墨加工用混匀调色设备

Also Published As

Publication number Publication date
EP2181779A1 (en) 2010-05-05
IT1391689B1 (it) 2012-01-17
ITTO20080808A1 (it) 2010-05-01
ES2582561T3 (es) 2016-09-13

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