EP3452208A1 - Misch- und dosiervorrichtung und verfahren für zwei flüssige bis hochviskose komponenten - Google Patents
Misch- und dosiervorrichtung und verfahren für zwei flüssige bis hochviskose komponentenInfo
- Publication number
- EP3452208A1 EP3452208A1 EP17717733.4A EP17717733A EP3452208A1 EP 3452208 A1 EP3452208 A1 EP 3452208A1 EP 17717733 A EP17717733 A EP 17717733A EP 3452208 A1 EP3452208 A1 EP 3452208A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mixing
- rotor
- metering device
- components
- head
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000007788 liquid Substances 0.000 title claims abstract description 21
- 239000000203 mixture Substances 0.000 claims description 11
- 230000014759 maintenance of location Effects 0.000 claims description 10
- 239000004033 plastic Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- 239000013013 elastic material Substances 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 230000000452 restraining effect Effects 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 238000004886 process control Methods 0.000 description 4
- 238000004026 adhesive bonding Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000013023 gasketing Methods 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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
- B01F27/05—Stirrers
- B01F27/07—Stirrers characterised by their mounting on the shaft
- B01F27/072—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis
- B01F27/0724—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis directly mounted on the rotating axis
-
- 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
- B01F27/05—Stirrers
- B01F27/09—Stirrers characterised by the mounting of the stirrers with respect to the receptacle
- B01F27/092—Stirrers characterised by the mounting of the stirrers with respect to the receptacle occupying substantially the whole interior space of the receptacle
-
- 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
- B01F35/75—Discharge mechanisms
- B01F35/754—Discharge mechanisms characterised by the means for discharging the components from the mixer
- B01F35/7547—Discharge mechanisms characterised by the means for discharging the components from the mixer using valves, gates, orifices or openings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/2305—Mixers of the two-component package type, i.e. where at least two components are separately stored, and are mixed in the moment of application
Definitions
- the invention is based on a mixing and metering device for two liquid to highly viscous components according to the preamble of independent patent claim 1.
- Mixing and metering devices for two liquid to highly viscous components are known from the prior art, which have a mixing head with high-pressure water flushing.
- the mixing head allows a dynamic
- the metering of the two components via metering valves depends on the media pressure, viscosity and opening time of the valves.
- a volumetric dosage is not possible.
- the high-pressure cleaning of the mixing head is not sufficient to completely clean a mixing chamber. In stratified operation this means that every day more elaborate disassembly and chemical or mechanical cleaning of the mixing head is carried out.
- a very complicated material circulation technique with gear pumps and pressure sensors for ensuring the supply pressure to the metering valves is required at the mixing head.
- This complex mechanical design has many maintenance-intensive components, such as valves without direct function control, a rotor for the mixing process, a mixing chamber, a needle seat and a cannula.
- a high-pressure water supply and a disposal container for rinse water are required.
- the lack of volumetric dosing technique can be compensated with temperature controlled components to keep the viscosity of the media within a narrow tolerance window. However, this requires a very expensive
- the mixing and metering device for two liquid to highly viscous components having the features of independent claim 1 has the advantage that proven volumetric metering with high process reliability and disposable components can be used without cleaning.
- the mixing chamber can be made, for example, from a commercial disposable syringe (3ml). The entire structure only has a mass of approx. 2 to 3 kg and can therefore be easily integrated into existing systems.
- embodiments of the mixing and metering device according to the invention for two liquid to highly viscous components enable simple process control and monitoring.
- dynamic mixing technology through the use of disposable components, which are sometimes available as low-priced merchandise, allows a largely maintenance-free operation for two liquid to highly viscous components, such as silicones, polyurethanes, epoxy resins, etc. for gasketing, gluing and / or potting. It can be dispensed with the time-consuming high-pressure flushing and the use of chemical cleaners.
- the process control is already much easier with already introduced volumetric dosing technology as a pressure-time-controlled process technology, since no complex sensor for flow monitoring of the dosing is required.
- the mixing and dosing device can be rinsed alternately with one of the two components and regenerated with both components before further work.
- This automatic process depends on the dripping time of the two liquid to highly viscous components and can be flexibly programmed. After the end of production or for longer interruptions, the media-carrying parts can be easily disposed of with a few simple steps and, if necessary, reused.
- Commercially available containers and pneumatically operated process pumps can be used cost-effectively to supply material to the dosing unit.
- Embodiments of the present invention provide a mixing and metering device for two liquid to high viscosity components comprising a volumetric dosing unit, a mixing head and a drive.
- the dosing unit has a first connection for a first component and a second connection for a second component.
- the mixing head comprises a mixing chamber which accommodates a rotor and an outlet valve, wherein the rotor is detachably connected via a mechanical interface to a drive shaft of the drive.
- the mixing head is designed as a disposable assembly and can be detachably connected to the dosing unit via a connection adapter.
- volumetric dosing unit and the drive for the rotor are switched on, wherein the metering and mixing of the two components takes place according to the set recipe, and the mixing head and the rotor are released and removed after the end of the process by turning and pulling the connection adapter and the drive shaft ,
- the rotor can be designed as a plastic injection molded part or as a three-dimensional plastic pressure component. This allows a particularly cost-effective production of the rotor as a disposable part.
- the rotor can shear and mix the supplied components by means of a rotational movement.
- the drive may, for example, comprise a DC motor with gearbox and generate the rotational movement which is transmitted to the rotor at the mechanical interface.
- the outlet valve may comprise a valve carrier and a valve sleeve with a parting plane, wherein at least a first overflow opening in the flow direction before the parting plane and at least one second overflow opening can be introduced in the flow direction after the parting plane in the valve sleeve.
- an expansion element with the at least one first overflow opening and the at least one second overflow opening can form an overflow region, which can guide the two-component mixture from the valve carrier in the direction of the cannula.
- a defined retention force to be overcome or a defined retention pressure to be overcome can be specified at the overflow region.
- the expansion element can be made of an elastic material as a tubular part, which is pushed over the valve sleeve and generates a to be overcome retention pressure for the two-component mixture.
- This allows a particularly simple and cost-effective implementation of the exhaust valve without electrical control effort.
- the mixing chamber in the overflow region form a pressure chamber, which the expansion element in the generation of the retention pressure by an additional pneumatic
- a sliding surface can be formed on the valve carrier, which leads a rotor head of the rotor. This allows the leadership of the rotor and the Process reliability of the mixing process can be improved.
- the drive shaft can be mounted and sealed in the connection adapter, whereby the process reliability can be further improved.
- Fig. 1 shows a schematic representation of an embodiment of a mixing and metering device according to the invention.
- FIG. 2 shows a schematic perspective transparent representation of a mixing head for the mixing and metering device according to the invention from FIG. 1.
- FIG. 3 shows a schematic perspective sectional illustration of a retention valve for the mixing head from FIG. 2.
- the illustrated embodiment of a mixing and metering device 1 for two liquid to highly viscous components comprises a volumetric metering unit 7, a mixing head 20 and a drive 10.
- the metering unit 7 has a first connection 7.1 for a first component and a second terminal 7.2 for a second component.
- the mixing head 20 comprises a mixing chamber 22, which accommodates a rotor 24 and an outlet valve 30, the rotor 24 being detachably connected via a mechanical interface to a drive shaft 16 of the drive 10.
- the mixing head 20 is designed as a disposable assembly and can be detachably connected to the dosing unit 7 via a connection adapter 9.
- the first connection 7.1 of the dosing unit 7 is connected to a first container 3 via a first supply 3.1.
- the second port 7.2 of the dosing unit 7 is connected via a second feed 5.1 with a second container 5.
- a formulation for metering and mixing of the two components can be set to an evaluation and control unit, not shown, which then controls the metering unit 7 and the drive 10 to implement the recipe accordingly.
- the drive 10 comprises a DC motor 12 and a gear 14 and can be fastened via a fastening flange 18.
- the drive shaft 16 is in the connection adapter
- connection adapter forwards the two components dosed by the dosing unit 7 to the mixing head 20.
- the rotor 24 in the exemplary embodiment shown is a plastic injection-molded part with at least one flow channel
- the rotor can be manufactured as a three-dimensional plastic part of a 3D printer.
- the rotor 24 shears and mixes the two supplied components by a rotary motion.
- the displacement is generated by displacing the two-component mixture in the mixing chamber 22 and the dynamic mixing of the two components is enabled.
- the outlet valve 30 has a valve carrier 32 and a valve sleeve 34 with a parting plane 34.1.
- a sliding surface 32.1 is formed in the illustrated embodiment, which leads a rotor head 24.1 of the rotor 24.
- at least one first overflow opening 34.2 is introduced into the valve sleeve 34 upstream of the parting plane 34.1 in the flow direction.
- at least one second overflow opening 34.3 is introduced into the valve sleeve in the flow direction after the separation plane 34.1.
- An expansion element 26 forms, with the at least one first overflow opening 34. 2 and the at least one second overflow opening 34.
- an overflow region 36 which directs the two-component mixture according to the illustrated flow profile SV from the valve carrier 32 in the direction of the cannula 29.
- the expansion element 26 is made of an elastic material as tubular ges part performed and pushed over the valve sleeve 34. The expansion element 26 generates a retention pressure to be overcome for the two-component mixture.
- the mixing comb 22 forms a pressure chamber 28 in the embodiment shown in the overflow region 36, which in the generation of the restraining pressure by an additional pneumatic force and / or hydraulic force and / or the expansion element 26 Spring force supported.
- a pressure spring 28.1 arranged in the region of the cannula 29 generates the additional spring force to support the expansion element 26.
- a method according to the invention for mixing and dosing of two liquid to highly viscous components with a mixing and dosing device 1 the rotor 24 is placed on the drive shaft 16 and the mixing head 20 on the connection adapter 9 and the mixing head 20 is fixed by rotation. Subsequently, the volumetric dosing unit 7 and the drive 10 are switched on for the rotor 24, wherein the metering and mixing of the two components takes place according to a set recipe. After the end of the process, the mixing head 20 and the rotor 24 are released and removed by turning and pulling the connection adapter 7 and the drive shaft 16.
- the mixing and dosing device 1 can be rinsed with one of the two components alternately and regenerated with both components before further work. This automatic process depends on the dripping time of the two liquid to highly viscous components and can be flexibly programmed. After the end of production or for longer interruptions, the media-carrying parts can be easily disposed of with a few simple steps and, if necessary, reused.
- Embodiments of the mixing and metering device according to the invention for two liquid to highly viscous components advantageously allow a largely maintenance-free operation for two liquid to highly viscous components, such as silicones, polyurethanes, epoxy resins, etc. for Seal foaming, gluing and / or casting. It can be dispensed with the time-consuming high-pressure flushing and the use of chemical cleaners.
- the process control is much easier with a previously introduced volumetric dosing technology as a pressure-time-controlled process technology possible because no complex sensors for flow monitoring of the dosing is required.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Accessories For Mixers (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016207856.9A DE102016207856A1 (de) | 2016-05-06 | 2016-05-06 | Misch- und Dosiervorrichtung für zwei flüssige bis hochviskose Komponenten |
PCT/EP2017/059145 WO2017190944A1 (de) | 2016-05-06 | 2017-04-18 | Misch- und dosiervorrichtung und verfahren für zwei flüssige bis hochviskose komponenten |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3452208A1 true EP3452208A1 (de) | 2019-03-13 |
EP3452208B1 EP3452208B1 (de) | 2022-06-08 |
Family
ID=58548722
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17717733.4A Active EP3452208B1 (de) | 2016-05-06 | 2017-04-18 | Misch- und dosiervorrichtung und verfahren für zwei flüssige bis hochviskose komponenten |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3452208B1 (de) |
DE (1) | DE102016207856A1 (de) |
WO (1) | WO2017190944A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102019114670A1 (de) * | 2019-05-31 | 2020-12-03 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Dosierventil, Mischeinrichtung und Verfahren zur Vermischung von reaktiven Komponenten sowie Verwendung eines Dosierventils |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH670987A5 (de) * | 1986-10-24 | 1989-07-31 | Spritztechnik Ag | |
DE102005050135B4 (de) * | 2005-10-18 | 2016-09-29 | Sca Schucker Gmbh & Co. Kg | Materialauftragsvorrichtung für Reaktionsgemische |
-
2016
- 2016-05-06 DE DE102016207856.9A patent/DE102016207856A1/de not_active Withdrawn
-
2017
- 2017-04-18 WO PCT/EP2017/059145 patent/WO2017190944A1/de unknown
- 2017-04-18 EP EP17717733.4A patent/EP3452208B1/de active Active
Also Published As
Publication number | Publication date |
---|---|
WO2017190944A1 (de) | 2017-11-09 |
DE102016207856A1 (de) | 2017-11-09 |
EP3452208B1 (de) | 2022-06-08 |
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