EP3495036A1 - Garniture statique de mélange pour mélangeur statique, mélangeur statique ainsi que procédé de fabrication - Google Patents

Garniture statique de mélange pour mélangeur statique, mélangeur statique ainsi que procédé de fabrication Download PDF

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Publication number
EP3495036A1
EP3495036A1 EP17205519.6A EP17205519A EP3495036A1 EP 3495036 A1 EP3495036 A1 EP 3495036A1 EP 17205519 A EP17205519 A EP 17205519A EP 3495036 A1 EP3495036 A1 EP 3495036A1
Authority
EP
European Patent Office
Prior art keywords
mixing element
mixer insert
webs
mixer
web ends
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP17205519.6A
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German (de)
English (en)
Other versions
EP3495036B1 (fr
Inventor
Bernhard Hug
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.)
Stamixco AG
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Stamixco AG
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 Stamixco AG filed Critical Stamixco AG
Priority to EP17205519.6A priority Critical patent/EP3495036B1/fr
Publication of EP3495036A1 publication Critical patent/EP3495036A1/fr
Application granted granted Critical
Publication of EP3495036B1 publication Critical patent/EP3495036B1/fr
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Anticipated expiration legal-status Critical

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    • 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
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/431—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor
    • B01F25/4316—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor the baffles being flat pieces of material, e.g. intermeshing, fixed to the wall or fixed on a central rod
    • B01F25/43161—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor the baffles being flat pieces of material, e.g. intermeshing, fixed to the wall or fixed on a central rod composed of consecutive sections of flat pieces of material

Definitions

  • the invention relates to a one-piece (static) mixer insert according to the preamble of claim 1 for a static mixer, comprising a first mixing element with a plurality of intersecting (extending along the longitudinal central axis and angularly arranged to this) first webs and at least one along a longitudinal axis adjacent to the first mixing element and by a twist angle, in particular of 90 °, relative to the first mixing element about the longitudinal axis twisted, in particular identical, second mixing element with a plurality of intersecting (along the longitudinal central axis extending and angled to this arranged) second webs, wherein the first webs have first web ends facing the second mixing element and the second webs have first web ends facing the first mixing element, and wherein a part of the first and second web ends are distributed over the outer circumference of the mixer insert.
  • the feature of the distributed arrangement of the first and second web ends over the outer circumference of the mixer insert means that these first and second webs or their web ends would end without the later to be explained, inventively provided connecting portions on the outer circumference, ie not inside the mixer insert.
  • the first web ends facing the second mixing element are arranged between a first intersection plane, in which the first webs intersect and the second mixing element.
  • the second web ends are arranged between a second crossing plane, in which the second webs intersect and the first mixing element.
  • the webs are rectilinear, at an angle to and extending along the longitudinal central axis supporting portions of the mixing elements.
  • Each mixing element has two groups of, preferably parallel, webs, where the two groups or the webs of the two groups intersect.
  • the two web groups are arranged so that perpendicular to the longitudinal axis between two webs of a group a web of the other group is added. At least one of the two groups has at least two webs, which are spaced perpendicular to the longitudinal axis, wherein a web of the other group is arranged between the webs.
  • each mixing element comprises between three and twenty, preferably between four and twelve distributed on the two groups arranged, perpendicular to the longitudinal axis juxtaposed webs. More preferably, the first and at least the second mixing element on the same number of webs and / or arrangement.
  • the invention relates to a static mixer according to claim 10, comprising at least one, preferably exclusively, a mixer insert according to the invention.
  • the mixer insert is arranged in a preferably tubular or line-shaped surrounding housing, which is preferably formed by the inner circumference of a fluid line of a device, in particular an industrial manufacturing device, very particularly preferably a spray device.
  • the invention relates to a method for producing such a mixer insert according to the preamble of claim 11.
  • the known mixer insert is arranged within a tubular container and comprises a plurality of individual mixing elements arranged one behind the other along a longitudinal axis of the mixer element and each comprising a plurality of intersecting webs.
  • the mixing elements are alternately relative to 90 ° about the longitudinal axis arranged twisted to each other.
  • the known mixer insert or its individual mixing elements are expensive to produce in the metal casting process to destroy the mold.
  • the filling of the tubular housing with individual mixing elements to form the mixer insert is time consuming. It has also become known, the individual mixing elements selectively welded together to form a one-piece mixer insert.
  • a production-optimized mixer insert which consists of two plastic injection molded parts, which are perpendicular to one another for the formation of the mixer insert pushed.
  • Such a mixer insert is in the WO 2017/097860 A1 disclosed.
  • the known mixer insert is only conditionally or not at all suitable for high pressures, such as those which are suitable for example in feed lines for molten thermoplastic material in plastic injection molding devices, and also not for high temperatures which likewise occur in the aforementioned application.
  • the present invention seeks to provide a one-piece and inexpensive mixer insert for static mixer, which can be easily and inexpensively manufactured from pressure and temperature stable materials, especially metal or ceramic. Furthermore, the object is to provide a static mixer with such a mixer insert and an optimized manufacturing method for producing such a mixer insert.
  • each of the distributed over the outer circumference of the mixer insert first web ends of the first mixing element material fit via a connecting portion with a, in particular spatially closest, over the outer periphery of the mixer insert distributed second web ends of the axially adjacent second mixing element is connected.
  • the first web ends of the first mixing element which are distributed over the outer circumference, support an associated second web end over the respective monolithically formed connecting section with a respective first web end, thus producing a layered, monolithic production of the mixer insert, in particular in a 3D printing process or in a generative process , most preferably in a powder bed process, even more preferably in a laser sintering process is possible.
  • a complex previously used casting technique and the destruction of the mold for Entformungs introen is therefore no longer necessary.
  • the mixing element according to the invention of pressure and temperature stable materials, in particular metal or ceramic manufacture which is preferred, so that a pressure and temperature stable, monolithic mixer insert with at least two, preferably only two or three axially adjacent, each intersecting webs having Mixing elements results.
  • P refers it is, when the respective distributed over the outer circumference arranged first and second web ends interconnecting connecting portions, in particular in the form of connecting webs, extend both at an angle to the longitudinal extension of the respectively associated first web and at an angle to the longitudinal extent of the respectively associated second web.
  • the connecting sections each span an angle (not equal to 180 °) with both webs connected via the respective connecting section.
  • the object is achieved with the features of claim 10, i. in a generic static mixer by the use of at least one, preferably exclusively designed according to the concept of the invention mixer insert, which is included to complete its mixer functionality in a tubular, formed for example by a fluid conduit surrounding housing with an inlet and an axially spaced outlet, wherein the inner diameter of the outer housing corresponds to the outer circumference of the mixer insert, possibly plus one (in particular low) clearance.
  • the object is achieved with the features of claim 11, ie in a generic method, characterized in that the mixer insert monolithic, layer by layer along the longitudinal axis adjacent and perpendicular to the longitudinal axis extending layers constructed in a generative process or in a 3D printing process is first layered the first mixing element is constructed with its distributed over the outer circumference of the mixer insert first web ends and then to the distributed over the outer circumference arranged first web ends of the first mixing element in each case a preferred as Connecting web trained connecting portion is visibly connected (ie layered) and that each connecting portion in layers a second web or its second web end of the second mixing element is connected, wherein the second mixing element is also constructed in layers following the first mixing element, so that a one-piece , Monolithic mixer insert with at least two mixing elements twisted about the longitudinal axis results and the mixing elements are monolithically formed or connected to each other at their distributed over the outer circumference, mutually facing web ends via a connecting web.
  • the invention is based on the idea to design the mixer insert such that it can be manufactured by means of a 3D printing method or alternatively a generative method, such as a powder bed method, very particularly preferably a laser sintering method of metal or ceramic, preferably without the need to remove the support material or again to be removed support structures use or to build up.
  • a generative method such as a powder bed method, very particularly preferably a laser sintering method of metal or ceramic, preferably without the need to remove the support material or again to be removed support structures use or to build up.
  • this is achieved in that arranged over the outer periphery of the mixer insert and the second mixing element facing first web ends of the first intersecting ridges of the first mixing element and distributed over the outer circumference, the first mixing element facing second web ends of the second intersecting ridges of monolithically formed or connected to the second mixing element or are each connected via a connecting portion of the mixer insert material, in particular metal or ceramic.
  • the connecting sections in particular the connecting webs, preferably extend at an angle both to the longitudinal extent of the respective first and of the respective second web connected or formed monolithically via the respective connecting section. Very particular preference is given to an embodiment in which no free web ends exist in the transition region between the first mixing element and the second mixing element, but instead pass over corresponding connecting sections into the respectively adjacent mixing element.
  • first and second web ends are also not formed as free ends, but monolithically or materially formed with the respective axially adjacent mixing element or are connected.
  • first and second web ends which are not distributed over the outer circumference, meet one another along a transverse axis extending perpendicular to the longitudinal axis and are connected to one another in a material-locking manner, in particular perpendicular to the longitudinal axis.
  • this transverse axis is completed or terminated at both ends by first and / or second webs arranged from the outer circumference and / or connecting sections connecting them (in particular connecting webs).
  • each mixing element has two intersection planes spaced along the longitudinal axis, in which webs of the mixing element intersect.
  • the mixing elements of the mixer insert according to the invention are suitably designed so that they each have only a single crossing plane extending perpendicularly to the longitudinal center axis in which webs of the respective mixing element intersect.
  • the feature 'to intersect' means that the webs not only meet in a crossing plane, but also extend beyond the crossing plane.
  • an embodiment of the mixing element can be realized, which has at the most in the area of the mixer insert ends, ie at the ends facing away from each other free web ends, which point away axially from all adjacent mixing elements.
  • the mixer insert wherein the intersecting first webs and / or the intersecting second webs of an opening along the longitudinal axis angle between 89 ° and 1 °, preferably between 80 ° and 10 °, even more preferably between 70 ° and 20 °, very particularly preferably between 60 ° and 30 °, even more preferably between 59 ° and 53 °, very particularly preferably of 56 ° span, in particular, which is preferred if the ratio between height and longitudinal extent of a respective the mixer elements along the longitudinal central axis and the diameter of the respective mixer element should be one to one.
  • the webs preferably clamp with the longitudinal central axis at an angle which corresponds to half the above-mentioned angle between each two intersecting webs.
  • each mixer element has intersecting lands extending from an outer peripheral side of the associated mixing element to a diametrically opposite outer peripheral side of the mixing element. In a further development of the invention, this is not the case here - this means that according to a preferred embodiment, none of the first and second webs extends from an outer peripheral side of the associated mixing element to a diametrically opposite outer peripheral side of the mixing element.
  • the longitudinal extent of the mixer insert is an even multiple of the outer envelope outer diameter, ie the outer diameter of the mixer insert.
  • the ratio of the length of each mixer insert to its diameter measured perpendicular to the longitudinal extent is one to one.
  • an embodiment of the Mixer insert particularly preferred in which all the second mixing element facing the first web ends of the first webs of the first mixing element materially connected to the second mixing element, in particular with the first mixing element facing the second web ends of the second webs of the second mixing element.
  • the (outer) envelope contour of the mixer insert is circular cylindrical.
  • the static mixer insert according to the invention can be produced monolithically, preferably from metal or ceramic, in a 3D printing process or in a generative process, very particularly preferably in a powder bed process, even more preferably in a laser sintering process or alternative generative process. It is essential that the mixer insert is built up in layers in the axial direction, ie in the direction of its longitudinal extension, wherein the layers are perpendicular to the longitudinal axis build up or extend.
  • the first mixing element is built up in layers and indeed with its first, later a second mixing element facing web ends, which then pass in layers or connected to respective connecting portions, in particular connecting webs, then connect directly to the second web ends of the second mixing element to be built up, which face the first mixing element.
  • the connecting sections remain in the mixer insert, so no longer have to be removed, resulting in not only a surprisingly simple manufacturable mixer insert, but also a particularly pressure-stable and due to the choice of materials and temperature stable mixer insert.
  • a mixer insert according to the invention which comprises several, in particular exclusively two or exclusively three mixing elements, of which adjacent mixing elements are arranged rotated by an angle of rotation, for example of 90 ° or less, about the longitudinal central axis to each other, can be easily Form a static mixer in which the mixer insert is received in a surrounding housing.
  • the static mixer is characterized in that the mixer insert is accommodated in a, in particular tubular housing, which is preferably formed of metal or ceramic, and most preferably by an industrial device, such as an injection molding device, or a fluid line or a fluid conduit provided therein Fluid line section is formed.
  • the static mixer according to the invention and / or the one-piece mixer insert according to the invention is particularly, but not limited to, for use in plastic injection molding machines for mixing of thermoplastic, molten plastic to be sprayed for homogenizing the temperature profile.
  • a one-piece, monolithic (static) mixer insert 1 in this case made of metal for forming a static mixer by arranging the mixer insert 1 in a tube, not shown, or line-shaped surrounding housing is shown.
  • the mixer insert 1 has a circular cylindrical (outer) envelope contour.
  • the mixer insert 1 comprises a lower in the plane of the first mixing element 2 and an axially along a longitudinal axis L adjacent second mixing element 3.
  • the two mixing elements 2, 3 are formed monolithically avoiding free web ends or go over each other via connecting portions 4, which only for reasons the better traceability or identifiability in the figures are shown graphically or in color contrast - in reality, they see from their outer surface or nature of the actual mixing elements 2, 3, ie go into this seamlessly.
  • the first mixing element 2 has a plurality of first webs 6 crossing each other in a single first intersection plane 5, which extend along the longitudinal central axis L and are arranged at an angle thereto or span an angle therewith.
  • first webs 6 each span an angle ⁇ of 56 ° in the present case.
  • the first webs 6 are divided into two groups 7, 8 of webs, wherein the first webs 6 of the groups 7, 8 are arranged alternately perpendicular to the longitudinal center axis L.
  • the first webs 6 have the first mixing element 3 facing the first web end 9, which are arranged axially between the second mixing element 3 and the single first crossing plane 5.
  • the first web ends 9 are divided into a part of distributed over the outer circumference arranged first web ends 10 and a part of inner first web ends 11th
  • the second mixing element 3 is constructed virtually identical to the first mixing element 2 with the essential difference that the second mixing element 3 is arranged rotated relative to the first mixing element 2 by 90 ° about the longitudinal central axis L.
  • the second mixing element 3 comprises a plurality of intersecting second webs 12, which intersect in a single second crossing plane 13. Also, the second intersecting webs 12 span an angle ⁇ oriented in the longitudinal axis L or opening along the longitudinal axis L of 56 ° in the exemplary embodiment.
  • the second webs 12 are also divided into two groups 14, 15 of perpendicular to the longitudinal center axis L alternating second webs.
  • the second webs 12 have the second mixing element 2 facing second web ends 16, which in turn are divided into a part of distributed over the outer circumference second web elements 17 and a part of inner second web ends 18th
  • each of the first web ends 10 arranged distributed over the outer circumference is connected via a respective web-shaped connecting section 4 to an axially opposite (closest) second web end of second web ends 17 arranged distributed over the outer circumference.
  • the respective first and second web ends 10, 17 which are distributed over the outer circumference and connect connecting sections 4 with one another are each web-like and extend both at an angle to the longitudinal extent of the respectively associated first web 6 and the respectively associated second web 12.
  • the respective inner first and second web ends 11, 18 are interconnected via connecting portions, wherein the connecting portions for connecting the inner web ends 11 , 18, as turned out Fig. 3 results, along a perpendicular to the longitudinal axis L extending transverse axis Q extend.
  • a finished static mixer comprising a mixer insert 1 according to the invention to be mixed fluid or drawn.
  • the first webs in the region of their distributed over the outer circumference arranged first web ends 10 have in the radial direction raised fluid guide elevations 19 or tapering, which tap against the fluid flow direction F and thus deflecting fluid flowing laterally, creating a direct impact of at least Preventing a fluid on or a flow against a surrounding the mixer insert 1 in a finished static mixer peripheral wall.
  • Such fluid conductor elevations 19 can also be found again at web ends 20 of the second webs 12 facing away from the first mixing element 2 or that part of these web ends 20 which terminate at the outer circumference.
  • mixer insert 1 shown can also be produced without the fluid conductor elevations 19.
  • the mixer insert 1 shown in the figures, designed according to the concept of the invention, is constructed in layers in the axial direction, in particular by laser sintering, starting in the drawing plane below, so that the mixer insert 1 during production in layers along the longitudinal axis L, in the drawing plane from below grows upwards.
  • At the first web ends 9 in each case connects to a connecting portion 4, which then merges into a next, associated second web end 16. It is essential that at least all distributed over the outer circumference arranged first web ends 10 via a respective connecting portion 4 with an associated, in particular spatially next distributed over the outer circumference arranged second web end 17 are connected or formed monolithic.
  • all the free, first and second web ends 9, 16 are connected to one another, that is to say also the inner first web ends 11 and the inner second web ends 18.
EP17205519.6A 2017-12-05 2017-12-05 Garniture statique de mélange pour mélangeur statique, mélangeur statique ainsi que procédé de fabrication Active EP3495036B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP17205519.6A EP3495036B1 (fr) 2017-12-05 2017-12-05 Garniture statique de mélange pour mélangeur statique, mélangeur statique ainsi que procédé de fabrication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17205519.6A EP3495036B1 (fr) 2017-12-05 2017-12-05 Garniture statique de mélange pour mélangeur statique, mélangeur statique ainsi que procédé de fabrication

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EP3495036A1 true EP3495036A1 (fr) 2019-06-12
EP3495036B1 EP3495036B1 (fr) 2022-05-18

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3789107A1 (fr) * 2019-09-04 2021-03-10 Stamixco-GPX-H GmbH Insert mélangeur, mélangeur statique ainsi que procédé de fabrication
DE202021105311U1 (de) 2020-10-05 2021-10-12 Scheugenpflug Gmbh Einstückiger statischer Mischer
CN114012106A (zh) * 2021-10-21 2022-02-08 宁波中乌新材料产业技术研究院有限公司 一种静态混合器的激光增材制造成型方法
US20220062835A1 (en) * 2020-09-02 2022-03-03 Dreco Energy Services Ulc Static mixer
RU2790122C1 (ru) * 2021-11-22 2023-02-14 Артем Юрьевич Воловиков Статическое смесительное устройство

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH642564A5 (de) 1979-10-26 1984-04-30 Sulzer Ag Statische mischvorrichtung.
EP2001580B1 (fr) 2006-03-24 2010-06-09 Stamixco AG Mélangeur statique et son procédé de fabrication
CH706732A2 (de) * 2012-07-11 2014-01-15 Promix Solutions Ag Statische Mischvorrichtung für fliessfähige Medien.
EP3034159A1 (fr) * 2014-12-18 2016-06-22 The Procter and Gamble Company Mélangeur statique
DE102015121351A1 (de) * 2015-12-08 2017-06-08 Stamixco Ag Mischereinsatz, statischer Mischer sowie Herstellverfahren

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH642564A5 (de) 1979-10-26 1984-04-30 Sulzer Ag Statische mischvorrichtung.
EP2001580B1 (fr) 2006-03-24 2010-06-09 Stamixco AG Mélangeur statique et son procédé de fabrication
CH706732A2 (de) * 2012-07-11 2014-01-15 Promix Solutions Ag Statische Mischvorrichtung für fliessfähige Medien.
EP3034159A1 (fr) * 2014-12-18 2016-06-22 The Procter and Gamble Company Mélangeur statique
DE102015121351A1 (de) * 2015-12-08 2017-06-08 Stamixco Ag Mischereinsatz, statischer Mischer sowie Herstellverfahren
WO2017097860A1 (fr) 2015-12-08 2017-06-15 Stamixco Ag Insert de mélange, mélangeur statique et procédé de fabrication

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3789107A1 (fr) * 2019-09-04 2021-03-10 Stamixco-GPX-H GmbH Insert mélangeur, mélangeur statique ainsi que procédé de fabrication
WO2021043960A1 (fr) * 2019-09-04 2021-03-11 Stamixco-GPX-H GmbH Insert mélangeur, mélangeur statique et procédé de production
US20220062835A1 (en) * 2020-09-02 2022-03-03 Dreco Energy Services Ulc Static mixer
US11813580B2 (en) * 2020-09-02 2023-11-14 Nov Canada Ulc Static mixer suitable for additive manufacturing
DE202021105311U1 (de) 2020-10-05 2021-10-12 Scheugenpflug Gmbh Einstückiger statischer Mischer
EP3978108A2 (fr) 2020-10-05 2022-04-06 SCHEUGENPFLUG GmbH Mélangeur statique monobloc, ainsi que son procédé de fabrication
WO2022073865A2 (fr) 2020-10-05 2022-04-14 Scheugenpflug Gmbh Mélangeur statique monobloc et procédé pour le fabriquer
CN114012106A (zh) * 2021-10-21 2022-02-08 宁波中乌新材料产业技术研究院有限公司 一种静态混合器的激光增材制造成型方法
RU2790122C1 (ru) * 2021-11-22 2023-02-14 Артем Юрьевич Воловиков Статическое смесительное устройство

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