EP3461760B1 - Récipient et dispositif de dosage de produits liquides - Google Patents

Récipient et dispositif de dosage de produits liquides Download PDF

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Publication number
EP3461760B1
EP3461760B1 EP18192982.9A EP18192982A EP3461760B1 EP 3461760 B1 EP3461760 B1 EP 3461760B1 EP 18192982 A EP18192982 A EP 18192982A EP 3461760 B1 EP3461760 B1 EP 3461760B1
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EP
European Patent Office
Prior art keywords
stand
pouch
connection
dosing
container
Prior art date
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Active
Application number
EP18192982.9A
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German (de)
English (en)
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EP3461760A2 (fr
EP3461760A3 (fr
Inventor
Uwe Michael Schlitt
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Individual
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Individual
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Publication of EP3461760A2 publication Critical patent/EP3461760A2/fr
Publication of EP3461760A3 publication Critical patent/EP3461760A3/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/008—Standing pouches, i.e. "Standbeutel"
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/02—Maintaining the aggregation state of the mixed materials
    • B01F23/023—Preventing sedimentation, conglomeration or agglomeration of solid ingredients during or after mixing by maintaining mixed ingredients in movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/50—Mixing liquids with solids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/50—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5861—Spouts
    • B65D75/5872—Non-integral spouts
    • B65D75/5877—Non-integral spouts connected to a planar surface of the package wall
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2231/00—Means for facilitating the complete expelling of the contents
    • B65D2231/001—Means for facilitating the complete expelling of the contents the container being a bag
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52—Details
    • B65D75/54—Cards, coupons, or other inserts or accessories
    • B65D75/56—Handles or other suspension means
    • B65D75/566—Hand holes or suspension apertures

Definitions

  • the present invention relates to a stand-up pouch for holding a flowable composition with two connections and a container system for a flowable composition with such a stand-up pouch.
  • the present invention further relates to a device for volumetric metering of a flowable composition with a container system according to the invention integrated into a circuit and to a method for producing a color formulation.
  • Conventional metering devices for liquid media generally have at least one storage container, which is controlled via mechanical or electrical pumps to remove the medium. These are usually open systems in which the storage containers are filled from the outside. For example, the containers have removable lids. Special requirements are placed on dosing systems for liquid media that contain solid particles or where there is the potential for solid particles to form in them. These include, for example: B. suspensions, d. H. Dispersions of insoluble solid particles in liquids, but also partially solidified melts or liquid media with solid particles, which result from crystallization of a solid originally dissolved in the liquid. The dosing systems for such media have e.g. B. Containers that contain a mechanical agitator in order to reduce or, at best, avoid settling of the solid.
  • the media is conveyed in the desired quantity (i.e. to be dosed) into a storage container (dosing template) and, if necessary, assembled together with other media to form the desired product.
  • a specific product mixture is produced sequentially from individual doses, i.e. each of the individual components required to produce a specific product mixture is dosed one after the other from the respective container.
  • the storage container and the dosing device form a structural unit.
  • Previous metering devices have a variety of disadvantages. Many conventional dosing devices usually do not allow simultaneous dosing of the individual components. Other devices capable of simultaneous dosing are open systems in which the storage containers have to be filled from the outside. In open systems There is a risk that the media in the containers will thicken as liquid can evaporate. The fluid loss, which cannot be clearly quantified, is not taken into account when dosing. Due to the increasing solids content of the medium over time, this leads to the products having different compositions with the same dosage. In the worst case scenario, the media becomes so thick that pump delivery is no longer possible and/or the agitator mechanism is blocked or destroyed. This can result in the entire affected dosing unit (container with stirring device, lines, pump) having to be replaced.
  • the EP 2067716 describes a container system according to the preamble of claim 1, which has a dimensionally stable container and a flexible bag with two connections arranged in the container.
  • the container system described is suitable for use in a closed circuit in which a liquid medium, in particular a medium that tends to settle, can be homogenized by circulation without the use of an agitator.
  • a container system which has a stand-up pouch with two connections arranged one above the other is particularly advantageous for use in a metering device for liquid media that are at risk of settling.
  • a floor-standing bag according to the preamble of claim 4, is for example US 2005/061831 known.
  • the container system is designed in such a way that the circulation of the liquid media virtually eliminates enrichment, phase separation, sedimentation, crystallization and drying of media that tends to settle. There is no need to use an agitator.
  • the residual emptying of the stand-up bags used can take place up to the almost complete emptying of the bags, so that no unused residues remain in the bags.
  • the materials for the bags can be chosen so that sterilization of the bag contents, for example by radiation, is possible.
  • the stand-up pouch according to the invention or the container system according to the invention advantageously enable the homogenization of fluids at risk of settling while at the same time maximum residual emptying, even under sterile conditions.
  • a first object of the present invention is a stand-up pouch for holding a flowable composition with a first connection in its lower region and a second connection which is arranged above the first connection at least when the stand-up pouch is completely filled.
  • connections of the stand-up pouch are preferably selected from rotary, plug-in, clamping, screw connections and combinations thereof.
  • a further subject of the present invention is a device for volumetric metering of a flowable composition, comprising a circuit for the flowable composition with a container system mentioned above integrated into the circuit, and a metering section extending from the circuit.
  • the invention is particularly suitable for flowable compositions that are prone to settling.
  • the stand-up pouch according to the invention for holding a flowable composition has a first connection in its lower region and a second connection, which is at least when the stand-up pouch is completely filled is arranged above the first connection.
  • the connections independently selected from rotary, plug-in, clamping, screw connections and any combinations thereof.
  • stand-up pouches are understood to mean pouches commercially available under this name.
  • the term stand-up pouch also known as a “stand-up pouch” or SUP for short
  • SUP stand-up pouch
  • the term stand-up pouch refers to a self-standing pouch for the transport and/or storage of liquid and free-flowing substances. Since these bags can stand without any aids, for example on store shelves, they have now established themselves as an alternative to bag-in-box packaging systems.
  • Commercially available stand-up pouches often have additional user-friendly features such as zipper closures, valves, tear notches, etc.
  • Common stand-up pouches can have a block bottom (“plow bottom”) or an inserted bottom. The block base is made from a folded piece and sealed into the bag profile.
  • Stand-up bags with an inserted bottom have a bottom brim that forms the body's center of gravity and allows the bag to stand securely. According to the invention, stand-up pouches with an inserted bottom are preferably used.
  • the bag according to the invention can be designed in one or more layers.
  • the individual layers can be made from the same or different materials.
  • the bag according to the invention is preferably made of film. Plastics and composite materials, such as metal composites, are preferably used as the material for the films. Materials suitable for the respective intended use are well known to those skilled in the art.
  • a flowable composition is generally understood to mean a flowable medium which has at least one liquid phase or at least one particulate phase or a combination of at least one liquid and at least one particulate phase.
  • the flowable composition preferably has at least one liquid phase.
  • the flowable composition is a single- or multi-phase liquid.
  • Examples of flowable compositions are solutions, emulsions (two- and multi-phase liquids), suspensions, dispersions and other liquid media.
  • a flowable composition may contain particulate matter or may potentially have the potential for particulate matter to form therein. These include, for example: B.
  • Suspensions ie dispersions of insoluble solid particles in liquids, but also partially solidified melts or liquid media with solid particles that result from the crystallization of a substance in the liquid originally dissolved solid result.
  • the flowable composition can also be a mixture of finely divided solids, such as powder or granules.
  • the flowable composition may be at risk of settling, ie may tend to form a solid sediment.
  • the flowable composition can be a dye composition.
  • the viscosities of flowable compositions can vary over a wide range, ranging from light fluid to viscous/pasty.
  • connections can be common connections known to those skilled in the art and commercially available. These include, for example: B. taps, such as taps, lids, such as IBC closures, hoses, couplings or other connections.
  • connections are preferably selected independently of one another from taps, covers, in particular IBC closures, hoses, couplings that lock on one or both sides and combinations thereof.
  • connections can be permanently and sealingly connected to the material of the stand-up pouch using technical methods known to those skilled in the art, such as welding, gluing, vulcanization, etc.
  • the first connection is provided for removal and the second connection is provided for supplying a flowable composition.
  • the first and second connections are arranged essentially vertically one above the other when the bag is completely filled.
  • essentially vertically arranged one above the other should mean that the projection of the straight connecting line of the center points is orthogonal with a small deviation, for example of less than 10°, preferably of less than 5°, in particular of not more than 2° the level surfaces of the earth's gravity field are in the direction of the resultant of the earth's gravity.
  • Arranged essentially vertically one above the other should therefore mean - based on the flat-folded stand-up bag - that the straight line through the center points of the connections has a slight deviation, for example of less than 10°, preferably of less than 5°, in particular of not more than 2 °, is a normal of the standing surface of the stand-up pouch.
  • the distance between the first and the second connection is in the range from 10% to 99%, preferably in the range from 30% to 97%, particularly preferably in the range from 50% to 95% of the maximum possible filling height of the bag.
  • the distance between the connections is determined as the length of the straight line connecting the two centers.
  • the maximum possible filling height of the bag is understood to mean the filling height of the upright bag when filled to the maximum possible extent with water or a solution with rheologically similar behavior.
  • the connections are specifically arranged so that in every filling state of the bag, the contents of the bag are mixed by circulating the medium, e.g. B. in the circuit of a metering device is achieved.
  • At least the first connection has a valve function.
  • the first connection for removal advantageously has a valve function.
  • the first connection is designed as a so-called coupling that locks on one or both sides.
  • both the first (removal) and the second (feed) connection are designed as a so-called coupling that locks on one or both sides.
  • the flowable composition has thixotropic behavior and/or a viscosity at room temperature in the range from 10 mPa s to 10 3 mPa s.
  • a common method for determining the viscosity of a fluid at risk of settling is e.g. B. determination using a rotational viscometer according to DIN 53 019.
  • the stand-up pouch according to the invention, it is collapsible.
  • a collapsible bag is understood to mean a bag that can be compressed, pressed, collapsed, folded, collapsed or otherwise compacted without ventilation or ventilation.
  • the inner walls should preferably not stick together and/or the wall should not be damaged.
  • the seal on the inside of the bag is designed in such a way that dead volumes, in particular due to the folds of the bag, are reduced to the lowest possible level.
  • the bottom area in particular is designed in such a way that the smallest possible sediment space is formed.
  • Stand-up pouches according to the invention can, for. B. can be used for chemicals, feed, food, cosmetics, pharmaceuticals and color mixtures.
  • the stand-up pouch according to the invention contains a flowable composition that is at risk of settling.
  • flowable compositions that are susceptible to settling are understood to mean flowable mixtures and liquids, such as solutions, emulsions (two- and multi-phase liquids) and liquid media that contain solid particles or in which there is the potential for solid particles to form in them. These include, in particular, suspensions or dispersions of insoluble solid particles in liquids, but also partially solidified melts or liquid media with solid particles that result from the crystallization of a solid originally dissolved in the liquid.
  • the flowable composition that is susceptible to settling is a dye composition.
  • the viscosity of the products at risk of settling Flowable compositions can vary within a wide range, ranging from slightly liquid to viscous/pasty.
  • the receiving device has a recess that corresponds to the first connection of the stand-up pouch.
  • the flowable composition is preferably at risk of settling.
  • the flowable composition is a dye composition.
  • a corresponding opening is understood to mean the opening whose function corresponds to the corresponding connection of the bag, for example for feeding into the container system or for removal from the container system, in particular for removal from the container system.
  • At least the first (lower) connection of the bag is connected to the corresponding opening of the container.
  • “connected” means that there is a connection that allows the passage of a medium located in the container system. This is usually a line.
  • the second connection of the stand-up pouch is arranged above the first connection, regardless of the filling of the stand-up pouch.
  • the (first) removal connection and the (second) supply connection are designed as so-called couplings that lock on one or both sides in order to avoid leakage of the liquid media on the container system or system side during the separation or changing process.
  • the stand-up pouch should be fixed using the holding device.
  • the stand-up bag is fixed in the receiving device in such a way that the second connection of the bag is positioned above the removal opening of the container, regardless of the degree of filling of the bag.
  • the receiving device has a substantially cuboid external basic shape.
  • the removal opening is arranged in particular on an end face of the receiving device.
  • the bottom of the receiving device can be inclined towards the front side of the removal opening.
  • the receiving device has a substantially rectangular base plate and a front end wall with the removal opening.
  • the receiving device can also have a rear wall and/or one or two side walls arranged opposite the front end wall.
  • the receiving device can also have a ceiling plate.
  • the receiving device is a surrounding, dimensionally stable container, such as that in EP 2067716 is described.
  • the stand-up pouch is not completely surrounded by the receiving device.
  • the receiving device has a removal opening in its lower region, which is coupled to the first connection of the bag.
  • the removal opening and the feed opening are arranged on the same end face of the receiving device. This configuration proves to be particularly advantageous when several containers are stacked, especially with a modular design.
  • the receiving device has a removal opening arranged in the lower region of the container, a connection from the removal opening to a first connection in the bag, optionally a feed opening and optionally a connection from the feed opening to the second connection of the bag.
  • the first connection of the bag can also be guided through the removal opening of the receiving device.
  • the second connection can be guided through the feed opening.
  • the container system according to the invention has a connecting line from the feed opening of the container to the second connection of the bag, which is designed to be completely or partially flexible.
  • the flexible part of the connecting line is preferably made of a suitable plastic, such as polyethylene, polypropylene, polyurethane, poly(ethylene) terephthalate, soft PVC or silicone.
  • the flexible part of the connecting line can also be formed by a fabric tube.
  • the flexible connecting line is fixed by a suitable holding device in the rear part of the receiving device and thus behind the bag.
  • the connecting line inside the receiving device is rigid up to its upper part and is designed to be flexible from there to the second connection of the bag.
  • a suitable embodiment of the container system according to the invention comprises at least one negative pressure sensor and/or a buffer container.
  • the bag For example, if there is only a smaller amount available in the bag than the amount required to produce a selected color, the bag must be changed before the selected color is completed. According to usual procedures, the remaining amount remaining in the bag is lost or it has to be pumped into the replaced container. In order to avoid this complex procedure, a Vacuum switch or a buffer container, possibly in combination, integrated into the circuit of the dosing device.
  • the container system according to the invention additionally includes a vacuum sensor in the supply and/or removal line.
  • a vacuum sensor registers when the pressure drops below a specific value below normal pressure. A drop in the pressure in the line to this value or below indicates that no more liquid is being pumped into or out of the bag.
  • the conveyor device can be switched off manually or automatically in response to this signal. The stand-up pouch can then be disconnected and, if necessary, filled or replaced.
  • the vacuum sensor is arranged in the extraction line.
  • the container system according to the invention additionally comprises a buffer container in the supply and/or removal line.
  • the remaining amount remaining in a stand-up pouch can be easily transferred into the buffer container or, if necessary, temporarily stored for further use. Alternatively, the remaining amount can also be disposed of professionally.
  • the material for the buffer container can be, for example: B. plastics such as polyethylene, polypropylene, polyurethane, poly(ethylene) terephthalate, soft PVC or silicone, metal, ceramic, glass, paper, composite materials or suitable combinations thereof can be used. When using rigid materials, a pressure compensation system can preferably be installed.
  • the buffer container is arranged in the feed line.
  • the supply line and the removal line can be connected to form a circuit for the flowable composition.
  • the container system described advantageously works without an additional mechanical stirring device if the mixing takes place via a circuit that is formed by connecting the supply line and the removal line is closed.
  • the flowable composition can be circulated at intervals or continuously so that segregation or settling of solids is avoided or at least greatly reduced.
  • the container system can be designed as a one-way or reusable exchange system.
  • the receiving device has a further recess which corresponds to the second connection of the stand-up pouch.
  • the conveying device is a metering pump, preferably a piston pump, in particular a oscillating piston pump.
  • the device according to the invention for volumetric metering of a flowable composition comprises a circuit for the flowable composition with a container system according to the invention integrated into a circuit and a metering section extending from the circuit.
  • the container system used according to the invention is a substantially closed unit that can be inserted into the circuit when it is already filled.
  • the container system advantageously works without an additional mechanical stirring device, since mixing takes place via the circuit. Since the container system is integrated into a substantially closed system, the flowable composition can be circulated at intervals or continuously. In this way, segregation or settling of solids can be avoided or at least greatly reduced.
  • the container system can be designed as a one-way or reusable exchange system. It can be connected to the circuit in a modular manner. This means that filling the device with the liquid medium to be dosed is comparatively easy and clean.
  • the stand-up pouch used is almost completely emptied.
  • the term “almost completely emptied” means that the emptied bag still contains at most 5% by weight, preferably at most 3% by weight, particularly preferably at most 1% by weight, based on the weight of the maximum filling quantity.
  • the inner pipe or hose parts, if any, fold or fold together with the stand-up bag to the smallest possible size.
  • the container system can be removed from the circuit. containers and Bags can be disposed of separately, together, or reused.
  • the lines of the circuit and the dosing section are made of a material that is suitable for the corresponding medium, i.e. H. made of inert material. They are preferably flexible and easy to replace. Suitable materials are e.g. B. commercially available plastic hoses, e.g. B. made of polyethylene (PE), polypropylene (PP) or polyurethane (PU), poly(ethylene) terephthalate, soft PVC or silicone.
  • the metering section includes at least one valve.
  • This valve is preferably a controllable metering valve.
  • the metering section comprises at least one conveyor device.
  • the metering section is used as a high-pressure metering system, for example with the one in the EP 2067716 split dosing described.
  • the amount of flowable composition to be metered can be controlled over the time that a valve is opened and/or a conveyor device is switched on.
  • the amount of flowable composition is metered using a piston pump, preferably a vibrating piston pump.
  • the metering section comprises a removal device.
  • Such a removal device can be a tap, a valve, a dispenser, a reducer, a transition piece, such as a nozzle, an olive, etc., an adapter, a coupling, a reusable fitting, such as a Y or a T-piece, a distributor, other fittings, such as an elbow, or any other removal device suitable for the application.
  • a reusable fitting in particular a Y or a T-piece, or a metering valve described below is used as a removal device in order to be able to meter a second liquid medium as an alternative or in addition to the liquid medium to be metered.
  • the removal device contains a self-closing valve (metering valve).
  • a self-closing valve is, for example, in EP 2067716 described.
  • the valve is opened by the liquid medium to be metered when the pressure of the medium to be metered is high enough to overcome the spring force of the spring piston.
  • the liquid medium to be dosed also serves as a type of hydraulic fluid.
  • the dosing medium simultaneously takes on the function of the hydraulic fluid and the sealant. In addition, it can be flushed via a second access, especially a second fitting.
  • Another advantage is that the dosing medium is sealed against air contact directly at the nozzle opening. This very effectively prevents the nozzle from drying out. Even if particles clog the nozzle opening, the closing needle pushes through the nozzle opening due to the force of the spring piston when closing. This means that the nozzle opening is always kept clear mechanically. Through repeated rinsing processes with suitable solvents or cleaning agents, clogging of the valve can be virtually eliminated, even after long periods of downtime. This provides a reliable and maintenance-free valve, particularly when dispensing dye compositions, adhesives and other critical liquid formulations.
  • the self-closing valve is controlled electronically, mechanically or pneumatically for opening and closing.
  • the valve can additionally or optionally be equipped with a drive means, for example a motor or auxiliary motor, a pneumatic drive or a magnet, in order to be able to control the valve.
  • a drive means for example a motor or auxiliary motor, a pneumatic drive or a magnet, in order to be able to control the valve.
  • the pull rod can be raised or lowered by controlling the corresponding drive means.
  • split dosing is a modified form of the split injection known from gas chromatography, which is used here for liquids for quotient dosing.
  • adjustable amounts of solvent are added to a secondary dosing channel via another access, preferably via a T, Y, X piece or an (automatic) valve.
  • the secondary dosing channel delivers a quantity of 1000 ⁇ l with a certain dosing pulse and the split ratio is set to 1:100, then with a dosing quantity of 1000 ⁇ !
  • Now 990 ⁇ l of solvent and 10 ⁇ l from the secondary dosing section are dosed. The excess quantity is drained off via the split valve.
  • split dosing unit makes it possible to dose the smallest amounts of liquid to be dosed with a very high level of accuracy and precision, since only a quotient of the liquid/solvent mixture to be dosed is specified and dosed via the dosing valve.
  • the desired split ratio setting can be controlled and calibrated by adjusting the valve and changing the pump pressure.
  • the device according to the invention contains a flushing unit.
  • This flushing unit includes a valve and/or a delivery unit for a solvent or cleaning agent and a container for a solvent or cleaning agent.
  • the solvent or cleaning agent passes from the container through the delivery unit and/or the valve into the removal device via a second access.
  • a piston pump preferably a oscillating piston pump, is arranged in the supply line.
  • Two or more devices according to the invention and optionally a flushing unit described above can be used particularly advantageously together in one system.
  • the individual conveying devices, conveying units and/or valves of the devices as well as the conveying unit and/or the valve of the flushing unit can be controlled by a central control unit.
  • Such a system can be used in particular for filling and/or metering liquid media, preferably dye compositions, particularly preferably pigment-containing dye compositions.
  • a vacuum sensor is arranged in the extraction line.
  • Assembling in the sense of the present invention is understood to mean the completion of a product. This includes all work that is necessary after filling the components to produce the product ready for sale, such as refining, mixing, packaging and/or the formation of sellable units.
  • the respective amount of the dye composition is metered over the time that a valve is opened and/or a conveyor device is switched on.
  • the respective amount of the dye composition is metered using a piston pump, preferably using a oscillating piston pump.
  • a control signal to the dosing device is preferred a piston pump, in particular a oscillating piston pump, and this switches off.
  • the vacuum sensor takes on the function of a switch.
  • a buffer container can be integrated into a paint mixing/dosing system with a closed paste pigment system in order to support the emptying of residues and the empty notification of the individual colorant containers within a dosing device.
  • a buffer container essentially consists of a flexible container with at least one supply line corresponding to a further opening.
  • the buffer container is integrated into the line circuit of the dosing device in such a way that the container can be filled without air bubbles.
  • the flowable composition conveyed from the bag flows through the buffer container and is conveyed back into the bag via the conveyor device.
  • the buffer container is designed in such a way that the rigidity of the container wall is higher than the resistance of the wall material of the collapsible stand-up bag.
  • the pump delivers from the buffer container. Because of the negative pressure that is now building up, it begins to collapse.
  • the side walls of the buffer container are in turn connected to a microswitch via dimensionally stable surrounding side walls.
  • the control unit of the dosing device receives an impulse by closing the circuit as a signal for the message "bag empty".
  • the buffer container is preferably dimensioned so that sufficient colorant is still available to complete the currently processed recipe.
  • a particularly advantageous variant of residual emptying involves the use of a vacuum sensor.
  • a buffer container can advantageously be dispensed with.
  • an adjustable vacuum sensor is integrated into the line system in the feed of the dosing pump. The switching point can be set so that the negative pressure does not trigger during the dosing process when the dosing medium is continuously running, but provides a switching signal when the bag has completely collapsed and is therefore empty due to the suddenly increasing negative pressure to the maximum of the pump power.
  • This switching signal is recorded on the control side as a “bag empty” message. Since the dosing pump only reaches this negative pressure in the suction phase, the dosing process can be interrupted at this point.
  • the operator receives the message “Bag empty” of the relevant bag, for example on the monitor of the control computer. Alternatively or additionally, a warning light on the bag's receiving device or on a control panel can indicate that the bag is empty. The operator can now disconnect the empty bag from the system and connect a new, filled bag. After connecting the new, filled bag, the pressure equalizes and the sensor releases the device again. Dosing continues at the point where it was interrupted without any residue remaining in the empty container.
  • a vacuum sensor is particularly advantageous because when a new bag is connected, the emptying of the current bag and the connection of a new, filled bag into the dosing device can be recorded electronically.
  • This data can be transmitted to the manufacturer or supplier and/or recorded as part of inventory management or statistics. This data can be used to automate ordering processes, inventory records, product sales quantities, etc. Filling or loading with foreign material can also be detected in this way.
  • the vacuum sensor provides useful information about the condition of the dosing device. If the negative pressure is maintained in the phase between the separation of the empty bag from the system and the connection of the new bag, this is an indication that the dosing device is functioning mechanically correctly.
  • the operator also receives information, e.g. B. on the monitor of the control unit that a malfunction in the dosing device is to be expected in the near future. With this information, preventive maintenance or repairs can be performed if necessary without actually causing the system to fail.
  • information e.g. B. on the monitor of the control unit that a malfunction in the dosing device is to be expected in the near future.
  • a simplified variant of the dosing device with a vacuum sensor is also suitable for completely emptying a bag with only one access without loss of dosing medium from the bag. All the advantages described above can also be used here.
  • the stand-up bag (1) according to the invention shown has two connections arranged vertically one above the other.
  • the connections are provided with fittings (2, 3) which allow the flow of flowable compositions, also referred to here and below as liquid media or fluids.
  • the dimensions of the connections and fittings (2, 3) are selected accordingly for the respective application.
  • the upper connection is used for feeding and the lower connection for removal.
  • the connections can also be reversed or both used for feeding or both for removal.
  • the removal and feeding can take place simultaneously or one after the other.
  • the upper connection for supply and the lower connection for removal are preferably used at the same time, in particular to implement a circuit.
  • a stand-up pouch (1) In the container system according to the invention shown, a stand-up pouch (1) according to the invention is used.
  • the stand-up bag (1) stands essentially independently in a housing (9) or can be fixed in the container system according to the invention by means of a receiving device - not shown in this figure.
  • the stand-up bag (1) can be designed as a disposable or reusable system and can also serve as transport packaging.
  • a further variant provides that the bag (1) is removed from a transport container and inserted into the receiving device (9).
  • the bag (1) is connected to the extraction line (5) using the removal fitting (3) and to the return line using the feed fitting (2).
  • the supply connection (2) is located above the removal connection (3), regardless of the filling status of the bag (1).
  • the extraction line (5) and the return line (4) can be connected to form a circuit via a suitable connection, for example a coupling (24).
  • a feed line (14) leads to a removal and/or filling device at the coupling (24) of the removal line (5) and return line (4).
  • the clutch (24) is usually designed as a three-way clutch.
  • the two connections of the stand-up bag (1) ie the removal fitting (3) and the feed fitting (2), are specifically arranged so that in every filling state of the bag (1) the contents of the bag are mixed by circulating the liquid medium in the circulation is achieved.
  • the connections (2, 3) are preferably designed or chosen in such a way that they simplify connection to the circulatory system, in particular via quick couplings.
  • the flow through the container system ensures mixing as soon as the circuit is activated via the conveyor device (13).
  • the design of the bottom of the receiving device must be taken into account. It is preferably constructed in such a way that settling particles or phases collect near the removal area of the bag (1) (settling funnel principle). The particles that settle are first captured by activating the circuit and fed back in at the highest point of the bag.
  • Other elements that promote or generate turbulence can also be installed and support a stirring or mixing effect, such as agitators, or elements that generate a movement of the medium when stimulated from outside.
  • the receiving device (16) can also be closed with a lid, for example for hygienic and/or safety reasons.
  • the supply lines can be installed inside the receiving device.
  • the conveyor device (13) In the return line (4) there is a conveyor device (13) with which the flowable composition can be circulated in the container system and/or conveyed from the coupling (24) into the feed line (14).
  • the conveyor device (13) is supplied with energy via a supply line (12).
  • the conveying device (13) is usually a pump, preferably a piston pump and in particular a oscillating piston pump.
  • a buffer container (6) is integrated into the extraction line (5).
  • the flowable composition in the bag (1) is removed from the bag (1) via the lower connection using the removal fitting (3) and reaches the buffer container (6) via the removal line (5) through an inlet connection (7). ).
  • the liquid medium is removed again via the drain connection (8).
  • the buffer container (6) is partially or completely surrounded by a housing (9).
  • the sensor (10) is attached to the inner wall of the housing (9) in such a way that it is permanently in contact with the outer wall of the buffer container (6) during operation. If the bag (1) empties, the buffer container (6) is no longer filled with the liquid medium.
  • the container system according to the invention for a liquid medium shown is equipped with a negative pressure sensor (17).
  • the structure of this container system essentially corresponds to that in Figure 2 shown.
  • the receiving device (16) is shown here schematically in dashed lines.
  • the stand-up bag (1) stands essentially independently in the receiving device (16). It is fixed in the receiving device (16) in such a way that the feed connection (2) is located above the removal connection (3), regardless of the filling status of the bag (1). Fixing the bag is usually advantageous due to the pull that the flow or the conveyor device induces.
  • the flowable composition in the bag (1) is removed from the bag (1) via the lower connection using the removal fitting (3) and through the removal line directly via the vacuum sensor to the connection (24) and further into the return line ( 4) promoted.
  • a preferably adjustable vacuum sensor (17) is integrated into the circulatory system.
  • the switching point of the pressure sensor (17) is usually selected so that the negative pressure does not trigger during the dosing process when the dosing medium is continuously running, but when the bag (1) has completely collapsed and is therefore empty, a switching signal is triggered by the suddenly increasing negative pressure to the maximum of the pump power delivers.
  • This switching signal is passed on to a control unit via the sensor cable (15).
  • the control unit will interrupt the dosing process until the pressure is equalized by inserting a full bag.
  • the vacuum sensor (17) delivers a corresponding signal to the control unit, the device is released again and dosing continues.
  • FIG. 4 A device according to the invention for metering a liquid medium is shown with a vacuum sensor (17) and a metering section.
  • the device shown here is particularly suitable for metering dye compositions.
  • the device essentially consists of two assemblies: a container system connected to a circuit and a dosing section extending from this circuit.
  • the container system integrated into the device essentially corresponds to that in Figure 3 container system shown.
  • the stand-up pouch is arranged in the receiving device (16). In the present illustration, only the feed fitting (2) connected to the return line (4) and the removal fitting (3) connected to the removal line (5) can be seen from the stand-up pouch.
  • connections (2, 3) are designed or selected in such a way that they simplify connection to the circulatory system, preferably via quick couplings.
  • the flow through the container system ensures mixing as soon as the circuit is activated via the conveyor device (13). Since dye compositions are generally media that tend to settle, attention must be paid to the construction of the bottom of the receiving device. Particles or phases that settle should be able to collect near the removal area of the bag (1) (settling funnel principle) in order to be captured first by activating the circuit and fed back in at the highest point of the bag.
  • Other elements that promote or generate turbulence can also be installed and support a stirring or mixing effect, such as agitators, or elements that generate a movement of the medium when stimulated from outside.
  • a circulation system can be dispensed with. In this case, there only needs to be a removal section (14, 18, 19, 21) from the container system for dosing.
  • the container system is connected to the feed line (14) to the dosing section by means of a coupling (24).
  • the clutch (24) is preferably a multi-way clutch.
  • container systems with the same dye compositions can be connected in series using a multi-way coupling or the container system can be completely emptied.
  • a service clutch can optionally be inserted between the clutch (24) and the conveyor device (13).
  • a service coupling allows, for example Feeding in additional liquid media from outside, such as residues of the same dye composition.
  • the circulatory system can also be completely drained using a service coupling.
  • the clutch (24) and the service clutch are preferably identical in construction.
  • the conveyor device (13) can be operated either continuously or at intervals depending on the required mixing due to the properties of the medium.
  • the feed line (14) is connected to the coupling (24) to a metering section.
  • the dosing section is essentially made up of a dosing valve (18), a dosing pump (19), a stepper motor (20) and a dosing line (21).
  • the medium to be dosed can be removed from the circuit of the container system via the dosing section.
  • the medium is pumped into the metering line (21) via the metering pump (19), for example a pressure pump.
  • the metering line (21) is released or blocked using the metering valve (18).
  • the valve (18) is, for example, a solenoid valve.
  • a removal device (22) is connected to the end of the dosing line.
  • the metered liquid medium reaches a product container (23) via the removal device. From there, further assembly can take place.
  • the removal device (22) can be rinsed with a suitable solvent or cleaning agent via a rinsing unit (not shown here).
  • the flushing unit is also connected to the removal device (22).
  • the solvent or cleaning agent is preferably dosed under pressure.
  • the solvent or cleaning agent is pumped from a container for solvents or cleaning agents into the rinsing section via a separate delivery unit, for example a pump.
  • the flushing section is opened or closed using another valve.
  • the valve can be, for example, a solenoid valve. If the removal device (22) is the one in the EP 2067716 Dosing valve described, the entire valve chamber and the closure mechanism of the dosing valve are advantageously flushed during the rinsing process.
  • the container for solvents or cleaning agents can be designed in a suitable manner. In a special version it is designed as a stand-up pouch according to the invention. It is therefore possible to design the device in a modular design.
  • the individual removal devices (22) can be assembled into an assembly, a so-called dosing head.
  • the EP 2067716 describes a possible embodiment of such a dosing head.
  • a modular liquid dosing system is manufactured with a closed pump/container system.
  • the arrangement of several of these systems forms multi-channel systems that allow the simultaneous dosing of any number of individual components or preparations, but also finished media from them.
  • Such a system essentially consists of the device described above with one or more circuits, dosing section(s), process control unit(s), a static or modular body and housing.
  • the conveying devices and units, pumps and valves are preferably combined in a receiving unit.
  • they can be arranged in a drawer system.
  • the compact or modular arrangement enables quick access to individual components for service or repair purposes.
  • the pumps and/or the valve assembly can also be accommodated modularly as a panel in the drawer or in the dosing module.
  • the holding devices for the media bags and quick coupling units to create the circuit are housed in a container module. Both modules have their own line systems, such as internal piping and/or hose systems, which are compatible and can be coupled.
  • the dosing module and container module also have their own power supply and internal cabling.
  • the dosing circuits with a closed system can be used wherever conventional systems are already in operation.
  • the systems with a closed system can be used with all types of liquid, paste and/or pigment systems such as adhesives, food raw materials, oils, solvents, alkyd, synthetic resin, polymer, acrylic, latex, nano-varnishes, as well as dispersion and Natural color compositions are loaded. However, they are also suitable for foods or animal feed that are at risk of settling, pasty and/or sensitive foods.
  • solvent-containing media can be processed without any problems, as no harmful or explosive vapors can escape.
  • the media in the stand-up pouches can be sterilized, for example by irradiation or heating, before or, if necessary, during use.
  • the new container system enables inline mixing, homogenization and dispersion of liquid, paste and/or pigment systems such as adhesives, food raw materials, oils, solvents, alkyd, synthetic resin, polymer, acrylic, latex, nano-varnishes and dispersions - and natural coloring compositions, but also pasty and/or sensitive foods or feedstuffs that are at risk of settling.
  • liquid, paste and/or pigment systems such as adhesives, food raw materials, oils, solvents, alkyd, synthetic resin, polymer, acrylic, latex, nano-varnishes and dispersions - and natural coloring compositions, but also pasty and/or sensitive foods or feedstuffs that are at risk of settling.
  • the stand-up pouch used according to the invention opens up new possibilities for use, preferably when used for color mixing.
  • the mixing systems are not tied to specified container sizes. Depending on the quality of the bags, a reusable solution is possible if refilling is desired or preferred.
  • the design as a stand-up pouch helps reduce waste as no separate transport packaging is necessary. Transport costs are reduced because the entire usable space is available.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Accessories For Mixers (AREA)
  • Nozzles (AREA)

Claims (14)

  1. Système de réservoir pour une composition fluide, comprenant
    - un dispositif de réception (16),
    - un sac à fond plat (1) disposé dans le dispositif de réception pour recevoir une composition fluide avec un premier raccordement (3) dans sa zone inférieure et un deuxième raccordement (2) situé au-dessus du premier raccordement au moins en cas de remplissage complet du sac à fond plat, dans lequel les raccordements sont choisis indépendamment l'un de l'autre parmi des liaisons rotatives, enfichables, par sertissage, par vissage, et toute combinaison de celles-ci au choix,
    - un convoyeur (13),
    - une conduite de prélèvement (5) depuis le premier raccordement du sac à fond plat,
    - une conduite d'acheminement (14) au deuxième raccordement du sac à fond plat, et
    - un capteur de dépression (17) dans la conduite de prélèvement et/ou d'acheminement,
    - dans lequel le dispositif de réception présente un renfoncement qui correspond au premier raccordement du sac à fond plat.
  2. Système de réservoir selon la revendication 1, dans lequel le deuxième raccordement (2) du sac à fond plat est disposé au-dessus du premier raccordement (3) indépendamment du remplissage du sac à fond plat.
  3. Système de réservoir selon l'une des revendications 1 ou 2, qui comprend en outre un réservoir tampon (6) dans la conduite de prélèvement et/ou d'acheminement.
  4. Sac à fond plat (1) destiné à recevoir une composition fluide avec un premier raccordement (3) dans sa zone inférieure et un deuxième raccordement (2) situé au-dessus du premier raccordement au moins en cas de remplissage complet du sac à fond plat, dans lequel les raccordements sont choisis indépendamment l'un de l'autre parmi des liaisons rotatives, enfichables, par sertissage, par vissage, et toute combinaison de celles-ci au choix, qui est rempli partiellement ou totalement d'une composition fluide, caractérisé en ce que la composition présente au moins l'une des caractéristiques suivantes :
    - la composition fluide montre un comportement thixotrope,
    - la composition fluide est une dispersion ou une suspension avec un diamètre équivalent des particules solides dans la gamme de 1 nm à 100 µm,
    - la composition fluide est une dispersion de pigment,
    - la composition fluide présente une viscosité à température ambiante dans la gamme de 10 mPa.s à 105 mPa.s.
  5. Sac à fond plat selon la revendication 4, dans lequel le premier raccordement (3) est prévu pour le prélèvement et le deuxième raccordement (2) est prévu pour l'acheminement de la composition fluide.
  6. Sac à fond plat selon l'une des revendications 4 ou 5, dans lequel le premier (3) et le deuxième raccordements (2) sont disposés fondamentalement verticalement l'un au-dessus de l'autre en cas de remplissage complet du sac et/ou la distance entre le premier et le deuxième raccordement se situe dans la gamme de 50 % à 95 % de la hauteur de remplissage maximale possible du sac.
  7. Sac à fond plat selon l'une des revendications 4 à 6, dans lequel au moins le premier raccordement (3) présente une fonction de soupape.
  8. Sac à fond plat selon l'une des revendications 4 à 7 qui est pliable.
  9. Système de réservoir selon l'une des revendications 1 à 3, qui comprend en outre un sac à fond plat selon l'une des revendications 4 à 8.
  10. Dispositif de dosage volumétrique d'une composition fluide comprenant un circuit fermé pour la composition fluide avec un système de réservoir intégré au circuit fermé comme défini à la revendication 9 et un segment de dosage partant du circuit fermé.
  11. Dispositif selon la revendication 10, dans lequel est disposé au moins une soupape de dosage contrôlable (18) dans le segment de dosage et/ou une pompe à piston (19) dans la conduite d'acheminement, de préférence une pompe à piston oscillant.
  12. Dispositif selon l'une des revendications 10 ou 11, dans lequel le capteur de dépression (17) est disposé dans la conduite de prélèvement (5).
  13. Procédé de fabrication d'une formulation de peinture, comprenant les étapes suivantes :
    - sélection d'un échantillon de couleur,
    - dosage de compositions de peinture à partir d'un ou plusieurs sac(s) à fond plat selon l'une des revendications 4 à 7 via deux ou plusieurs dispositifs selon l'une quelconque des revendications 10 à 12 dans un réservoir adéquat correspondant à l'échantillon de couleur sélectionné, et
    - suivi de la confection des compositions de peinture dosées dans le réservoir pour obtenir la formulation de peinture désirée.
  14. Procédé selon la revendication 13, dans lequel le capteur de dépression envoie un signal de commande, quand est atteinte une pression absolue dans la gamme de 0,1 bar à 1 bar, de préférence dans la gamme de 0,3 bar à 0,95 bar, en particulier dans la gamme de 0,5 bar à 0,9 bar, au dispositif de dosage, de préférence à une pompe à piston, en particulier à une pompe à piston oscillant, et le désactive.
EP18192982.9A 2017-09-07 2018-09-06 Récipient et dispositif de dosage de produits liquides Active EP3461760B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017120686.8A DE102017120686A1 (de) 2017-09-07 2017-09-07 Behälter und vorrichtung zum dosieren flüssiger medien

Publications (3)

Publication Number Publication Date
EP3461760A2 EP3461760A2 (fr) 2019-04-03
EP3461760A3 EP3461760A3 (fr) 2019-08-07
EP3461760B1 true EP3461760B1 (fr) 2023-11-08

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ID=63524173

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EP (1) EP3461760B1 (fr)
DE (1) DE102017120686A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022110118A1 (de) 2021-04-29 2022-11-03 Uwe Michael Schlitt Vorrichtung und Verfahren zum Dosieren fließfähiger Zusammensetzungen mit Betriebsparameter- Erfassung
DE202021103214U1 (de) 2021-06-15 2022-09-22 Uwe Michael Schlitt Kolbenpumpe mit Glaszylinder
DE102021123449A1 (de) 2021-09-10 2023-03-16 Uwe Michael Schlitt Vorrichtung und Verfahren zum Dosieren und Konservieren flüssiger Medien
EP4397599A1 (fr) * 2023-01-09 2024-07-10 Uwe Michael Schlitt Dispositif d'alimentation

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD271805S (en) * 1980-12-12 1983-12-13 Abbott Laboratories Container for medical liquids
DE4002255A1 (de) * 1990-01-26 1991-08-01 Fluid Verfahrenstechnik Gmbh Vorrichtung zum dosieren von fluessigkeiten
US6039305A (en) * 1998-01-21 2000-03-21 K-2 Corporation Bite valve for hydration bladder
US6854888B1 (en) * 2000-01-28 2005-02-15 Dennis B. Brown Multispout flask with pump
US20070039974A1 (en) * 2005-08-18 2007-02-22 Lloyd James J Dual-usage beverage dispensing system
DE202008018406U1 (de) 2007-12-05 2013-09-10 Uwe Michael Schlitt Vorrichtung zum Dosieren flüssiger Medien und Behältersystem dafür
DE102009024862A1 (de) * 2009-06-09 2010-12-16 Uwe Michael Schlitt Dosiervorrichtung für flüssige Medien
US9341356B2 (en) * 2014-09-25 2016-05-17 Franklin NG System and method for portable lantern

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Publication number Publication date
EP3461760A2 (fr) 2019-04-03
EP3461760A3 (fr) 2019-08-07
DE102017120686A1 (de) 2019-03-07

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