EP3505230B1 - Mischvorrichtung mit integrierter förderpumpe - Google Patents

Mischvorrichtung mit integrierter förderpumpe Download PDF

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Publication number
EP3505230B1
EP3505230B1 EP19150614.6A EP19150614A EP3505230B1 EP 3505230 B1 EP3505230 B1 EP 3505230B1 EP 19150614 A EP19150614 A EP 19150614A EP 3505230 B1 EP3505230 B1 EP 3505230B1
Authority
EP
European Patent Office
Prior art keywords
mixing
mixing device
module
inlet
liquid
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
EP19150614.6A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3505230A1 (de
Inventor
Uwe Grimm
Philipp Gysler
Jörg Gassenschmidt
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.)
IKA Werke GmbH and Co KG
Original Assignee
IKA Werke GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by IKA Werke GmbH and Co KG filed Critical IKA Werke GmbH and Co KG
Priority to SI201531872T priority Critical patent/SI3505230T1/sl
Publication of EP3505230A1 publication Critical patent/EP3505230A1/de
Application granted granted Critical
Publication of EP3505230B1 publication Critical patent/EP3505230B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • B01F25/52—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle with a rotary stirrer in the recirculation tube
    • 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
    • B01F23/53—Mixing liquids with solids using driven stirrers
    • 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
    • B01F27/27—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices
    • B01F27/271—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed radially between the surfaces of the rotor and the stator
    • B01F27/2711—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed radially between the surfaces of the rotor and the stator provided with intermeshing elements
    • 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
    • B01F35/56—General build-up of the mixers
    • B01F35/561—General build-up of the mixers the mixer being built-up from a plurality of modules or stacked plates comprising complete or partial elements of the mixer
    • 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
    • B01F35/71—Feed mechanisms
    • B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
    • B01F35/7176—Feed mechanisms characterised by the means for feeding the components to the mixer using pumps

Definitions

  • the present invention relates to a mixing device with an integrated feed pump, and in particular a mixing device for mixing powdery and/or granular particles or similar free-flowing solids with at least one liquid, the mixing device comprising a feed shaft for the solid, an inlet for the liquid, at least one mixing tool rotatable about an axis in a mixing chamber, and an outlet for the mixture.
  • a mixing device is out DE19629945A1 known and is used to incorporate solids such as powder, granules and bulk materials into a liquid template. Solid and liquid are supplied separately. During operation, a highly turbulent zone is created by rotating the mixing tool. This creates a negative pressure, through which the solid and the liquid are sucked into the mixing chamber.
  • the device has a pump-effective driving means in the form of an impeller which functions in the manner of a water ring pump and is arranged between a dispersing tool and an outlet of the device.
  • mixing or stirring devices are, for example, from the publications EP 1 197 260 A1 , U.S. 3,503,846 A such as DE 196 29 945 A1 previously known.
  • the object is therefore to create a device of the type mentioned at the outset that can be constructed in a simple and compact manner and is also suitable for processing liquids with high viscosity or mixtures with variable viscosity.
  • a mixing device for mixing powdery and/or granular particles or similar free-flowing solids with at least one liquid, the mixing device comprising a supply shaft for the solids, an inlet for the liquid, at least one mixing tool rotatable about an axis in a mixing chamber, an outlet for the mixture, and a feed pump arranged between the inlet and the mixing tool.
  • the present invention is based on the finding that the integrated feed pump can achieve a uniform, stable throughput of liquid, even when liquids with high or increasing viscosity are being processed will. This is particularly useful if the device has a return flow, ie if the mixture is fed back into the liquid container and sent for renewed processing.
  • the liquid throughput remains stable even when the supply of the solid is released, e.g. by opening a valve provided for this purpose in the feed chute for the solid.
  • the suction effect and thus the supply of the liquid and/or the solid can at least temporarily “break down”.
  • the invention provides that the feed pump is arranged between the inlet and the mixing tool, ie is arranged upstream of the mixing tool and downstream of the inlet with respect to the conveying direction of the solid. This improves the suction effect without impeding the supply of solids into the mixing chamber or having to avoid this through design measures.
  • the outlet and/or the inlet is arranged horizontally or laterally and/or the feed shaft is arranged vertically and in particular centrally.
  • the outlet is located above the inlet.
  • the pump is arranged downstream of the inlet and upstream of the outlet.
  • the geometric center of the cross-section of the feed shaft is aligned with the axis of rotation of the mixing tool.
  • the feed shaft is arranged vertically and concentrically with respect to the axis of rotation of the mixing tool.
  • the supplied solid passes outside the center of the mixing tool with the mixing tool in contact.
  • the mixing process takes place in a zone with a higher peripheral speed and on/at the mixing tool.
  • the mixture is exposed to higher turbulences in this area of the mixing tool.
  • the mixing process can therefore run faster from the outset, since the solids do not first have to be transported through the mixing tool to the areas with higher peripheral speeds.
  • the feed chute can be closed by a closure or a plug or a pressure piston, the closure or the plug or the pressure piston being movable in the feed chute along the feed direction of the solid, terminating flush with the walls of the feed chute and by means of this a Compressive force can be exerted on the solid.
  • the pressure in the mixing chamber can be increased by closing the feed chute. Mixing a specific amount of liquid with a specific amount of solid is possible without the addition of undesired mass flows, in particular air or solid or liquid. Due to the design of the closure as a pressure piston, even solids that are difficult to pour can be fed in quickly and precisely. This configuration also has the advantage that the walls of the feed shaft remain clean and do not have to be cleaned separately. Deposits are avoided.
  • the closure can also be designed for easy closure.
  • the further connection there is a further connection between the feed pump and the mixing chamber, the further connection being formed by a tube or a line on the outside of a housing of the mixing device and having an orifice in the mixing chamber.
  • the further connection forms a bypass line for the liquid between the delivery stage and the mixing chamber. Through the bypass line, part of the pumped liquid reaches the mixing chamber via an orifice. The solid is thus brought into contact with the liquid from several sides. This relieves the conveyor stage and speeds up the mixing process. This is an advantage with liquids of high viscosity.
  • the further connection is arranged inside the housing of the mixing device, in particular the further connection (22) is a connection channel formed in the housing (23). Further lines running on the outside can be dispensed with. Leaks in the external lines and the risk of damage can be avoided.
  • This embodiment also has the advantage that the design of the mixing device can be kept very compact.
  • the mouth of the further connection is formed by an annular gap and/or at least one bore and/or at least one nozzle.
  • different types of mouth can be provided. This means that different mixtures that require different types of wetting can be processed.
  • the pressure in the mixing chamber can be increased by supplying liquid. This improves the dispersing effect. Formation of lumps is avoided.
  • the additional supply of liquid also promotes the cooling of the mixing device, which is particularly advantageous at high speeds and highly viscous mixtures/liquids.
  • the design of the mouth of the bypass line as an annular gap also results in improved flushing of the entire mixing chamber.
  • the mixing chamber can be easily and efficiently filled with cleaning fluid be flushed through. As a result, it is no longer necessary to open the mixing device for cleaning (so-called "cleaning-in-place" feature).
  • the annular gap is arranged above the mixing chamber, in particular around the feed shaft, in relation to the conveying direction of the liquid.
  • the arrangement of the annular gap "on the ceiling" of the mixing chamber has the advantage that the supplied liquid can run into the mixing chamber with the aid of gravity and forms a liquid curtain.
  • the wetting surface of the liquid is increased, which means that the solid is wetted more quickly. This contributes to better dispersion.
  • the arrangement of the annular gap around the feed shaft ensures an even distribution of the liquid.
  • the supplied solid is evenly wetted. This avoids clumping as a result of local dehydration.
  • the feed pump is formed by a centrifugal pump with a feed wheel with a plurality of feed vanes, in particular four or eight preferably curved feed vanes.
  • a feed pump is structurally simple to implement, so that existing designs can be upgraded with relatively little effort.
  • the feed pump is formed by a rotor-stator device with one or more rotor and/or stator rings in a concentric arrangement.
  • the delivery vanes or rotor and/or stator rings are arranged on the side of the delivery pump facing away from the mixing tool. Such an arrangement has a particularly good suction effect.
  • the feed pump is arranged on the same drive shaft as the mixing tool. Thus, only a single drive motor is required for the mixing tool and the feed pump.
  • the outlet opens into an outlet line, which leads back into a container for the liquid, which is connected to the liquid supply via a supply line.
  • the mixing device has a modular design, with a mixing module comprising the mixing tool, a delivery module comprising the delivery pump, and an inlet module comprising the inlet, wherein the delivery module can be arranged between the mixing module and the inlet module, and the inlet module can be arranged directly on the mixing module is.
  • the feed pump may not be needed to process a low-viscosity liquid.
  • the conveyor module may not be needed to process a low-viscosity liquid.
  • the delivery module can be added (at a later date).
  • the figure 1 shows a mixing device 1 according to an embodiment of the invention.
  • the mixing device has a modular structure and comprises a mixing module 2, a delivery module 3 and an inlet module 4.
  • the modules 2, 3 and 4 are connected to one another, but can be detached from one another and connected to one another in some other way.
  • the figure 2 shows a variant not according to the invention, in which no delivery module 3 is provided and the mixing module 2 is connected directly to the inlet module 4 .
  • the mixing module 2 has a vertical central feed chute 5 for feeding in a solid and a horizontal lateral outlet 6 for the mixture.
  • the feed shaft 5 and the outlet 6 open into a mixing chamber 7 in which a mixing tool 8 is arranged, which is formed by a rotor-stator device 9, 10 with a rotor rim 11 and a stator rim.
  • the rotor 9 is connected to a rotating drive shaft 12 driven by a motor 13 .
  • a feed pump 14 designed as a centrifugal pump with a feed wheel 15 and a plurality of feed vanes 16 arranged on the feed wheel 15 is provided in the feed module 3 connected to the mixing module 2 .
  • the conveying blades 16 are arranged on the side of the conveying wheel 15 facing away from the mixing module 2 .
  • the feed wheel 16 is connected to the drive shaft 12 and is rotated by the rotation of the drive shaft 12 .
  • the inlet module 4 is connected to the lower end of the conveyor module 3 in the image orientation.
  • the inlet module 4 comprises a horizontal lateral inlet 17 for the liquid.
  • the inlet 17 is connected to a liquid tank, not shown.
  • the outlet 6 can also be connected to the liquid container be connected so that a closed circuit is formed and the mixture can be conveyed back into the liquid container and fed back to the mixing process.
  • the solid is sucked into the mixing chamber 7 through the feed shaft 5 .
  • a negative pressure is generated, which causes powders or granules to be sucked in through the feed shaft 5 .
  • the rotor 9 is designed and arranged in such a way that the solid is initially conveyed separately from the liquid and only hits the liquid in a predetermined area with high turbulence.
  • the solid is accelerated within the rotor 9 and, due to the increase in volume towards the edge area of the rotor 9, is finely distributed even before it is dispersed in the liquid.
  • the finely distributed solid particles then come into contact with a liquid jacket with a relatively large surface, so that they are dispersed in the liquid without agglomerates.
  • FIG. 3 and 4 show the feed wheel 15 according to FIG figure 1 illustrated embodiment of the invention.
  • the feed wheel 15 has eight feed vanes 16, each having a curvature and extending from the radially outer edge of the feed wheel towards a hub 18, where the radially inner end of the conveying vanes 16 is spaced from the hub 18 .
  • FIG. 1 shows a mixing device 1 according to a further embodiment of the present invention.
  • the design in figure 5 differs from the design in figure 1 in that the feed pump 14 is formed by a rotor/stator device with a rotor 19 and a stator 20 .
  • the rotor 19 includes at least one rotor rim 21. With this configuration, a particularly fine dispersion is achieved. This is particularly the case when the mixture is recirculated, ie fed back into the mixing process.
  • the figure 6 shows an embodiment of the invention with a further connection 22 between the conveyor module 3 and the mixing chamber 7.
  • the further connection runs outside of a housing 23 on its outside, from a horizontally outer side of the conveyor module 3, to an outside of the mixing module 2.
  • the further Connection 22 forms a bypass line for the liquid conveyed by the feed pump 14 .
  • additional connection and bypass line are used synonymously in the following.
  • a part of the delivered liquid can bypass the delivery channel along the axis of the delivery pump 14 between the delivery module 3 and the mixing module 2 via the further connection 22 and reach the mixing module 2 directly.
  • the further connection 22 is formed by a hose or pipeline.
  • the further connection 22 has an orifice 24 leading into the mixing chamber 7 .
  • the orifice 24 is located on the side opposite the mixing tool 8--in the illustrated orientation on the upper side--of the mixing chamber 7, so that the liquid can flow into the mixing chamber 7 with the aid of gravity.
  • the mouth 24 is through an annular gap 25 educated.
  • the annular gap 25 surrounds the feed shaft 5 concentrically. In this embodiment, the feed shaft 5 is aligned with the axis of the mixing tool 8.
  • the figure 7 shows an embodiment of the invention with an eccentric feed chute 5 and an external bypass line 22.
  • the feed chute 5 is arranged shifted in relation to the axis of the stirring tool 8.
  • the orifice 24 of the bypass line 22 embodied as an annular gap 25 is widened within the housing 23 of the mixing device 1 in such a way that the annular gap 25 also runs concentrically around the feed shaft 5 .
  • the figure 8 shows an embodiment of the invention, wherein the further connection 22 forming the bypass line runs within the housing 23 of the mixing device 1 along the conveying direction of the liquid—in the illustrated orientation ascending—from the conveying module 3 to the mixing module 2.
  • the mouth 24 is also completely inside the housing 23 of the mixing device 1.
  • the bypass line 22 is completely integrated into the housing 23 of the mixing device 1 and forms a channel completely enclosed by the housing 23.
  • the figure 9 shows an embodiment with an eccentric feed shaft 5.
  • the feed shaft 5 is closed with a piston 26.
  • the piston 26 is arranged in the feed shaft 5 so that it can be displaced along the feed direction of the solid.
  • the piston 26 rests flush against the walls of the feed shaft 5 and forms a closed cavity with the housing 23 and the mixing chamber 7 .
  • the closure of the mixing chamber 7 is designed to be pressure-resistant.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Accessories For Mixers (AREA)
EP19150614.6A 2015-02-04 2015-11-23 Mischvorrichtung mit integrierter förderpumpe Active EP3505230B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI201531872T SI3505230T1 (sl) 2015-02-04 2015-11-23 Mešalna naprava z integrirano napajalno črpalko

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102015101611 2015-02-04
DE102015105247.4A DE102015105247B4 (de) 2015-02-04 2015-04-07 Mischvorrichtung mit integrierter Förderpumpe
EP15808333.7A EP3253480B1 (de) 2015-02-04 2015-11-23 Mischvorrichtung mit integrierter förderpumpe
PCT/DE2015/100498 WO2016124164A1 (de) 2015-02-04 2015-11-23 Mischvorrichtung mit integrierter förderpumpe

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP15808333.7A Division EP3253480B1 (de) 2015-02-04 2015-11-23 Mischvorrichtung mit integrierter förderpumpe
EP15808333.7A Division-Into EP3253480B1 (de) 2015-02-04 2015-11-23 Mischvorrichtung mit integrierter förderpumpe

Publications (2)

Publication Number Publication Date
EP3505230A1 EP3505230A1 (de) 2019-07-03
EP3505230B1 true EP3505230B1 (de) 2022-06-08

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EP15808333.7A Active EP3253480B1 (de) 2015-02-04 2015-11-23 Mischvorrichtung mit integrierter förderpumpe
EP19150614.6A Active EP3505230B1 (de) 2015-02-04 2015-11-23 Mischvorrichtung mit integrierter förderpumpe

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EP15808333.7A Active EP3253480B1 (de) 2015-02-04 2015-11-23 Mischvorrichtung mit integrierter förderpumpe

Country Status (13)

Country Link
US (1) US10780406B2 (sl)
EP (2) EP3253480B1 (sl)
JP (1) JP6845797B2 (sl)
CN (1) CN107438477B (sl)
BR (1) BR112017015869B1 (sl)
CA (1) CA2975776C (sl)
DE (2) DE102015105247B4 (sl)
DK (2) DK3505230T3 (sl)
ES (2) ES2834613T3 (sl)
MX (1) MX2017009692A (sl)
PL (2) PL3505230T3 (sl)
SI (2) SI3505230T1 (sl)
WO (1) WO2016124164A1 (sl)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106925175B (zh) * 2017-03-29 2019-10-15 南京辉锐光电科技有限公司 一种粉末混合装置及方法
CN108993306B (zh) * 2018-08-13 2021-06-25 苏州卓诚钛设备有限公司 一种内锁紧拆装式的同轴旋转药液搅拌装置
DE102019102585A1 (de) * 2019-02-01 2020-08-06 Ystral Gmbh Maschinenbau + Processtechnik Rotor für eine Vorrichtung zum Mischen von Pulver und Flüssigkeit und Vorrichtung zum Mischen von Pulver und Flüssigkeit
CN111734690B (zh) * 2020-07-23 2024-09-13 上海尼可尼流体系统有限公司 多相流体混合输送泵
JP2022099895A (ja) * 2020-12-23 2022-07-05 デンカ株式会社 連続混合装置
CN113731259A (zh) * 2021-08-05 2021-12-03 扬州大学附属医院 一种高分子材料研究用静电纺复合纤维膜制备设备
CN219186528U (zh) * 2022-12-09 2023-06-16 无锡理奇智能装备有限公司 液体分散结构总成及粉液混合装置
CN117732361B (zh) * 2024-02-21 2024-04-30 四川兆雪科技有限公司 一种高效高质量制备油气井示踪剂的装置及方法

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BE681488A (sl) * 1965-10-25 1966-10-31
JPS5027178U (sl) * 1973-07-10 1975-03-28
US4239396A (en) * 1979-01-25 1980-12-16 Condor Engineering & Manufacturing, Inc. Method and apparatus for blending liquids and solids
JP2681813B2 (ja) * 1988-11-09 1997-11-26 クニミネ工業株式会社 分散液調製装置
JP3862241B2 (ja) * 1995-12-16 2006-12-27 光洋機械産業株式会社 ミキサ−の原料投入装置
DE19629945C5 (de) * 1996-07-25 2008-10-16 Ika-Werke Gmbh & Co. Kg Mischvorrichtung zum Vermischen von pulverförmigen und/oder körnigen Partikeln mit einer Flüssigkeit
EP1197260B1 (de) * 2000-10-11 2004-09-01 Vakumix Rühr- und Homogenisiertechnik Aktiengesellschaft Vorrichtung zum Homogenisieren fliessfähiger Stoffe
ATE392251T1 (de) * 2004-12-23 2008-05-15 Kinematica Ag Vorrichtung zum dispergieren eines festen, flüssigen oder gasförmigen stoffes in einer flüssigkeit
CN101516488B (zh) * 2006-09-21 2013-06-19 巴斯夫欧洲公司 混合具有细粒固体的密闭容器中的液体的方法，这种容器，喷射器喷射嘴以及这种喷射嘴的用途
JP5832279B2 (ja) * 2011-12-26 2015-12-16 株式会社ジェイテクト 分散装置
JP2013132572A (ja) * 2011-12-26 2013-07-08 Jtekt Corp 混合分散装置
CN103977721B (zh) * 2014-05-30 2015-10-21 济钢集团有限公司 一种储槽内固液混合介质循环搅拌系统

Also Published As

Publication number Publication date
DE112015006108A5 (de) 2018-04-12
JP6845797B2 (ja) 2021-03-24
DK3253480T3 (da) 2020-12-14
ES2926340T3 (es) 2022-10-25
WO2016124164A1 (de) 2016-08-11
CN107438477A (zh) 2017-12-05
US20180264419A1 (en) 2018-09-20
EP3505230A1 (de) 2019-07-03
SI3253480T1 (sl) 2021-04-30
DK3505230T3 (da) 2022-09-05
US10780406B2 (en) 2020-09-22
PL3253480T3 (pl) 2021-03-08
JP2018510054A (ja) 2018-04-12
CA2975776C (en) 2023-02-28
BR112017015869B1 (pt) 2022-09-13
DE102015105247B4 (de) 2018-02-01
EP3253480A1 (de) 2017-12-13
EP3253480B1 (de) 2020-09-23
ES2834613T3 (es) 2021-06-18
MX2017009692A (es) 2017-10-23
DE102015105247A1 (de) 2016-08-04
PL3505230T3 (pl) 2022-10-03
SI3505230T1 (sl) 2022-11-30
CA2975776A1 (en) 2016-08-11
BR112017015869A2 (pt) 2018-03-27
CN107438477B (zh) 2021-07-09

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