EP3789107A1 - Mixer insert, static mixer and production method - Google Patents
Mixer insert, static mixer and production method Download PDFInfo
- Publication number
- EP3789107A1 EP3789107A1 EP19195331.4A EP19195331A EP3789107A1 EP 3789107 A1 EP3789107 A1 EP 3789107A1 EP 19195331 A EP19195331 A EP 19195331A EP 3789107 A1 EP3789107 A1 EP 3789107A1
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- EP
- European Patent Office
- Prior art keywords
- webs
- mixer insert
- mixer
- center
- mixing
- 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.)
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Classifications
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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
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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
- 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
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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
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/19—Mixing dentistry compositions
Definitions
- the invention relates to a mixer insert for a static mixer according to the preamble of claim 1 comprising a plurality of mixing elements arranged one behind the other along a central longitudinal axis, preferably directly adjacent to one another, the mixing elements having a web arrangement with a plurality of crossing and / or adjacent webs, wherein at least two mixing elements arranged along the longitudinal center axis, preferably directly one behind the other, have a preferably otherwise identical web arrangement rotated relative to one another by an angle of rotation, preferably 90 °.
- the invention further relates to a static mixer with a mixer insert according to the invention according to claim 14 and a method for producing a mixer insert according to claim 15.
- WO 2017/097860 A1 describes a generic mixer insert for a static mixer which achieves a particularly good mixing performance of 2-component systems in a static mixer in that the mixing elements each comprise a plurality of intersecting webs.
- the disadvantage of the prior art is that the mixer insert has to be assembled from two partial mixing inserts and, accordingly, two partial mixing inserts have to be manufactured and assembled or connected to one another within the scope of production. On the one hand, this leads to a complex and cost-intensive production.
- the reduction in size of the mixer insert there is also a limit due to the stability of the partial mixer inserts, which is no longer applicable from a certain size can be produced safely and reliably.
- the demolding of the partial mixing inserts in the context of an injection molding process can no longer be guaranteed from a certain dimension, in particular when the webs of the partial mixing inserts fall below a certain web dimension.
- mixing inserts in particular one-piece mixing inserts, are already known from the prior art, which can be manufactured relatively easily, in particular injection molded, but which are in need of improvement with regard to the mixing effect or with regard to the mixing efficiency and / or with regard to the pressure loss.
- the object of the present invention is to provide a mixing insert for a static mixer that can be manufactured easily, in particular in the injection molding process, particularly preferably in the plastic injection molding process, which is characterized by the ease of manufacture and at the same time a low flow resistance and a high mixing performance or Mixing efficiency enables or provides. Furthermore, the object of the present invention is to provide a further developed static mixer which enables efficient mixing with relatively low flow resistance and a method for producing a mixer insert for a static mixer which enables simple and robust production of an efficient mixer insert.
- this object is achieved with the features of claim 1, that is to say in the case of a generic mixer insert in that the entire mixer insert is now a one-piece, is preferably an injection-molded component, in particular a plastic component.
- the basic idea of the present invention is based on the surprising finding that in the case of a minimal or slight deviation in the geometry of the mixing elements of the mixer insert, which in the modified form does not only provide intersecting webs, but also includes individual webs in addition to the crossing webs, that adjoin other webs and / or merge into other webs, the mixer insert can be manufactured in one piece, i.e. as a complete mixer insert, with minimal losses in terms of mixing efficiency and pressure loss or minimal increase in flow resistance in a relatively simple injection molding process, in particular plastic injection molding process can.
- the mixer inserts according to the invention can be produced particularly quickly, simply and inexpensively, since in particular the manual assembly of two or more partial mixing inserts to form a total mixing insert is dispensed with.
- the web arrangement comprises a first group of webs, the longitudinal extent of which runs parallel to a lattice plane which comprises a longitudinal center axis of the mixer insert.
- the first group of webs of the web arrangement of each mixing element provides the webs which essentially form an intersecting arrangement, namely with intersection points or intersection axes that are perpendicular to the said lattice plane or perpendicular to said lattice plane.
- the webs of the first group of the web arrangement thus make a very significant contribution to the mixing efficiency of the mixer insert while at the same time reducing the pressure loss.
- the bars of the first group of the bar arrangement are arranged perpendicular to the longitudinal center axis and perpendicular to the lattice plane in rows, in particular in four rows.
- the rows are described below with reference to a structure close to the center and a structure remote from the center.
- the structure close to the center should accordingly be the rows of webs which on one side directly adjoin the longitudinal center axis.
- the structures remote from the center should accordingly be the rows of webs that adjoin the rows of the web structure close to the center on both sides perpendicular to the lattice plane.
- the first group of webs comprises a central web structure which has webs on both sides of the lattice plane, the webs preferably in the form of a lying figure of eight or two diamonds or parallelograms arranged next to one another along the longitudinal center axis form and wherein more preferably mutually adjoining webs are each arranged on different sides of the lattice plane.
- the webs of the web structure close to the center are or are a particularly advantageous basic shape Basic geometry for the formation of a mixer insert with a particularly high mixing efficiency.
- the webs of the first group can also be multiplied by an integer or half number along the longitudinal axis.
- three or more diamonds arranged one behind the other along the longitudinal center axis can be provided or formed. If necessary, only one rhombus can also be formed from the webs of the web structure close to the center.
- the webs of the web structure close to the center have widenings penetrating the lattice plane at one or both ends in order to achieve better stability of the webs adjacent to one another of the web structure close to the center.
- the widened ends of the ends run in order to be able to penetrate the lattice plane accordingly, at least also perpendicular to the lattice plane, that is to say in the direction of a web width of the first group of webs. It has been found to be particularly advantageous that such widenings at the ends of webs have a positive effect on the stability of the mixer insert on the one hand, but at the same time do not have a negative influence on the one-piece manufacture of the mixer insert and equally advantageously have no noticeable influence on the mixing efficiency and the pressure drop or flow resistance .
- the first group of webs comprises a web structure remote from the center which has webs on both sides of the lattice plane, the webs preferably in the form of a cross and one arranged concentrically to the cross Form rhombus, with three webs further preferably being arranged on each side of the lattice plane, each of which runs parallel to one another.
- the webs of the web structure of the lattice plane remote from the center also make a not inconsiderable contribution to the formation of intersecting webs and accordingly lead to a particularly high degree of the high mixing efficiency of the one-piece mixer insert.
- the web structure remote from the center has point symmetry with respect to the center point of the lattice plane.
- other embodiments, for example with more webs, could also be provided.
- a duplication of the webs made along the longitudinal center axis and possibly mirrored could be provided, which then together with the webs on both sides of the lattice plane form two crosses and two diamonds arranged concentrically to the crosses.
- the webs forming the cross of the web structure remote from the center are connected to one another and / or merge into one another at the transitions of the mixing elements. If more than three webs on each side of the lattice plane form the web structure remote from the center, it can alternatively or in a corresponding generalization also be provided that webs that end at a corner point of the respective mixing element merge into or are connected to a web of an adjacent mixing element which also ends in a corner point of the following or preceding mixing element.
- the connection in a configuration that is as punctiform as possible, can essentially focus on said corner or on those adjacent to one another Extend corners of the respective mixing elements. Realistically, however, the connection or the transition of the webs of the web structure remote from the center extends at least over the web height of the two webs connected or merging into one another.
- the webs of the central web structure of the grid plane forming the rhombus or the rectangle have a width that is reduced in sections in the direction perpendicular to the grid plane, in particular in end areas that are arranged in the center of the mixing element .
- a reduction in the pressure loss can be achieved in a particularly advantageous manner without the mixing efficiency being noticeably impaired as a result.
- the reduced width can be produced perpendicular to the lattice plane without any particular challenges within the framework of an injection molding process, in particular within the framework of a plastic injection molding process.
- the web arrangement of the mixing elements comprises a second group of webs, the longitudinal extent of which runs perpendicular to a wing plane, the wing plane comprising a longitudinal center axis of the mixer insert and being arranged perpendicular to the lattice plane.
- the webs of the second group which run along a wing plane, represent an at least partial departure from the principle of exclusively crossing webs. Although this has a very slight negative effect on the mixing efficiency and the flow resistance of the mixer insert, this slight deviation from one is possible at the same time Web arrangement with exclusively crossing webs, that the mixer insert is manufactured or can be manufactured in one piece and preferably by injection molding, for example by plastic injection molding.
- the second group of webs have a web structure arranged in the longitudinal direction of the mixing element at the end and / or a centrally arranged web structure, which preferably has webs on both sides of the wing plane, the web structure further preferably in the form of a roof or angle forms or at least includes. If webs are provided which have web structures arranged at the end and in the center along the longitudinal center axis or in the longitudinal direction of the mixing element, it can be particularly advantageously provided that the roof shape or the angular shape of the then two web structures are oriented in the same way, that is, the angle or the roof shape point in the same direction and / or the webs run parallel, even if possibly on different sides of the plane of the wing.
- more webs are included in the second group of webs.
- zigzag lines instead of roof or angular shapes can be formed by the webs.
- several webs can also be arranged along the longitudinal center axis, so that more than one or two angular structures are formed.
- the webs of the second group i.e. the webs that run perpendicular to the wing plane, also contribute to the mixing efficiency of the mixer insert and also enable the mixer insert to be manufactured as a one-piece component, preferably in the context of an injection molding process.
- the webs forming the rhombus or the rectangle of the web structure of the lattice plane remote from the center are connected to the transitions of the mixing elements by two mixing elements, preferably arranged directly next to one another, with webs arranged at the end of the wing plane and / or go into this.
- This connection or this transition is preferably formed on the same side of the lattice plane.
- the connection or the transition preferably runs over the entire width of the web forming the rhombus or the rectangle.
- webs that end in the longitudinal direction or along the longitudinal center axis at a boundary or an edge of the mixing element in the area of the lattice plane are connected to webs arranged at the end of the wing plane and / or in skip this.
- transition or the connection between the said webs is of particular advantage both for the mechanical stability of the mixer insert and for the manufacturability as a one-piece mixer insert in the context of an injection molding process.
- the webs of the The web structure remote from the center and the webs of the wing plane at the outer ends facing away from the longitudinal center axis have a curved surface, the curvature being selected such that an oval, preferably elliptical, particularly preferably circular cross-section of the entire mixer insert is formed along the longitudinal center axis along the longitudinal center axis .
- the curvatures are individually designed in such a way that an enveloping overall surface profile is produced which is oval, preferably elliptical, particularly preferably circular, in cross section.
- a rectangular or square cross section can also be provided.
- the oval, preferably elliptical, particularly preferably circular cross-section has the advantage that it can be combined with a large number of common, circular mixing sleeves of known static mixers.
- the mixing sleeve of which has a rectangular, preferably square, cross-section, in particular the mixing sleeve this embodiment can also be advantageous, in particular taking into account the fact that with a rectangular or square cross-section a relatively lower flow resistance is achieved.
- the other webs, web structures and planes are designed identically to a square or rectangular cross section.
- the mixer insert comprises a series arrangement of 4 to 48, preferably 8 to 24, mixing elements. At least two, preferably but all, mixing elements are each rotated by a rotational angle, preferably 90 °, to the adjacent mixing element.
- the length of the mixer insert and / or the number of mixing elements can vary depending on the Multi-component material and can be varied depending on the intended use, whereby it can basically be assumed that a more homogeneous mixture is achieved with a larger number of mixing elements than with fewer mixing elements.
- an additional number of mixing elements only increases the flow resistance and no longer contributes any additional mixing efficiency. Therefore, depending on the application, a corresponding choice of the number of mixing elements can be advantageous.
- the static mixer for mixing, in particular dental-medical, multi-component material systems, comprising a mixing sleeve, in particular with connection means arranged at one end for connection to an output device of the multi-component material system and output means arranged at the other end, preferably an output nozzle or output opening, the aforementioned
- the object is achieved in that a mixer insert according to the type described above is received in the mixing sleeve.
- a static mixer can be made available which at the same time has a particularly high mixing efficiency and can be produced in a particularly simple and uncomplicated manner and thus also at low costs.
- the object is achieved in that the mixer insert is produced with a single injection molding process, in particular a plastic injection molding process, preferably with a jaw tool with two slides arranged perpendicular to the main shaping direction.
- the Fig. 1 shows a plan view of a mixer insert 01 according to the invention, for a static mixer, with a plurality of mixing elements 02, which are arranged one behind the other along a central longitudinal axis L, namely directly adjacent to one another.
- the mixing elements 02 include a web arrangement 03 with a multiplicity of crossing and / or adjacent webs 04.
- the mixer insert 01 comprises thirteen mixing elements 02 arranged directly adjacent to one another.
- more, in particular up to 48, mixing elements can also be provided in a one-piece mixer insert.
- fewer mixing elements can also be provided.
- the adjacent mixing elements are each rotated by 90 ° to each other, whereby in the in the Fig.
- the mixer insert 01 is made in one piece overall, the web arrangements 03 of the mixing elements 02 of two, preferably of all, mixing elements arranged one behind the other along the longitudinal axis, rotated by an angle of rotation, preferably 90 °, with respect to one another and otherwise designed with an identical web arrangement.
- a particular advantage of the mixer insert 01 according to FIG Fig. 1 is the fact that this is a one-piece injection-molded component, in particular as a one-piece plastic injection-molded component, is trained and in the Fig. 1
- the embodiment shown can be produced by means of a simple, one-step injection molding process.
- the web arrangements of the respective mixing elements, taken by themselves and due to the mutually rotated or rotated arrangement of the respective successive mixing elements 02, provide particularly good and efficient mixing in the context of a static mixing process.
- FIG. 11 shows a section of a mixer insert 01 according to the embodiment of FIG Fig. 1 .
- the boundaries G between mutually adjacent mixing elements 02 are marked there again more clearly Fig. 2 a mixing element 02 is shown in the central area, in which it can be seen that the majority of the webs 04 running along the plane of representation form webs 04 that intersect perpendicular to the plane of representation.
- Said webs 04.1 are to be assigned to the first group of webs, in which case the grid plane E G , in particular the grid plane E G of the central mixing element according to FIG Fig. 2 , parallel to the display plane of the Fig. 2 runs and also in the Fig. 2 Includes longitudinal center axis, not shown, of the mixer insert.
- the first group of webs 04.1 comprises a web structure close to the center, which webs 04.2 have on both sides of the lattice plane E G , the webs 04.2 preferably having the shape of a lying figure of eight or two diamonds or diamonds arranged next to one another Form parallelograms along the longitudinal center axis and, more preferably, webs 04.2 adjoining one another are each arranged on different sides of the lattice plane.
- the first group of webs 04.1 comprises a web structure remote from the center, the webs 04.3 of which are arranged on both sides of the lattice plane and wherein the webs 04.3 preferably have the shape of a Form a cross and a diamond or rectangle arranged concentrically to the cross, wherein, more preferably, three webs 04.3 are arranged on each side of the grid plane E G , each of which runs parallel to one another. In the example of the Fig. 2 the three parallel webs 04.3 on this side of the grid plane E G can be seen . Arranged on the other side of the lattice plane E G webs 04.3 are covered by the choice of representation perspective with the plane parallel to the grating plane E G by the webs 04.3 and webs of the leaf plane.
- the outer mixing elements 02 in the illustration of Fig. 2 are rotated by 90 ° with respect to the central mixing element 02 that the viewing direction here runs parallel to a wing plane E F , which is perpendicular to the grid plane E G of the said mixing elements and also includes the longitudinal center axis of the mixer insert.
- a wing plane E F which is perpendicular to the grid plane E G of the said mixing elements and also includes the longitudinal center axis of the mixer insert.
- the webs 04.1 of the first group form a total of four rows, of which the two inner rows form the web structure 05 close to the center, the external webs forming the web structure 06 remote from the center.
- the bars 04.2 of the near-center ridge structure having 05 penetrating at the ends of the lattice plane E G and widenings 07, which improve the stability of the adjacent webs.
- the ridges 04.1 of the first group that are associated with 06 of the center distant ridge structure in the direction perpendicular a partially reduced width have on the lattice plane E G B, in particular in end regions of the webs 04.3, which are arranged centrally in the mixing element 02 .
- the webs 04.3 forming the cross of the web structure 06 remote from the center are connected to one another at the transitions or boundaries G of the mixing elements 02.
- the connection extends approximately over a height H of the said webs 04.3 of the web structure 06 remote from the center.
- the connection or the transition between the webs 04.3 can also be less than the height H of the corresponding webs 04.3.
- the webs 04.4 of the second group of webs namely the webs which run perpendicular to the wing plane E F , merge into the webs 04.1, 04.2 of the lattice plane in the area of the central web structure 05, or are connected to one another .
- the webs 04.3 of the web structure remote from the center and the transition of the said webs 04.3 on the border are arranged on both sides of the lattice plane or can be seen at the transition of the mixing elements 02 on the one hand and in webs 04.4 perpendicular to the plane of the wing.
- FIG. 4a In the representation of the Figure 4a are in a representation analogous to the middle mixing element of Fig. 2 , that is, in a view in which the grid plane E G runs parallel to the plane of representation, only the webs 04.2 of the web structure 05 close to the center are shown.
- 04.2 webs which are arranged on one side of the lattice plane E G, shown in solid lines and ridges 04.2 which are arranged on the opposite side of the lattice plane E G, shown in dotted lines.
- the wing plane E F runs in the illustration of Figures 4a and 4b perpendicular can be seen from the display plane and the central longitudinal axis L.
- said ridges 04.2 of the longitudinal central axis L form in each case an alternating arrangement with respect to the lattice plane E G a figure eight or two juxtaposed diamonds in the direction of the mixing element 02 from.
- the webs 04.4 of the second group have a web structure arranged at the end in the longitudinal direction L of the mixing element 02 and a web structure arranged centrally in the longitudinal direction L of the mixing element 02, each having webs 04.4 on both sides of the wing plane E F , preferably the Web structure each forms the shape of a roof or an angle. Like in the Fig. 4 can be seen, the angular structures are equally oriented.
- a mixer insert 01 according to the first embodiment is shown again. Also in the perspective view of the Fig. 5 the webs 04.3 of the web structure remote from the center of the webs 04.1 of the first group can be seen particularly well. In addition, the webs 04.4 of the second group of webs can also be clearly seen. It is also shown that the entire mixer insert 01 has a rectangular, in particular square, cross-sectional shape.
- FIG. 6 an alternative embodiment of a mixer insert 01 can be seen in which the webs 04.3 of the web structure remote from the center and the webs 04.4 of the wing plane have a curved surface O at the outer ends facing away from the longitudinal center axis L, the curvature being selected so that along the Longitudinal center axis L, for example, a circular cross section of the mixer insert 01 is achieved. Otherwise, the arrangement and alignment of the webs 04.1 to 04.4 corresponds to the system of the first embodiment. Only the transitions of the central webs of the web structure 04.3 remote from the center are omitted due to the rounding or curvature of the outer ends of the webs.
- connection or said transition as it is in the Fig. 2 is shown in the circular configuration of the total surface or the cross section of the mixer insert 01, as shown in FIG Fig. 6 is shown, is not given, can also be well based on the detailed representation of the Fig. 7 inferred, which is essentially the perspective of the representation and arrangement of the mixing elements according to FIG Fig. 2 corresponds to. It can be seen that the transition between the webs 04.3 and the webs 04.4 arranged at the ends of the adjacent mixing elements 02 is retained, whereas the transition between the central webs 04.3 with the central webs 04.3 of the adjacent or next mixing element 02 is due to the rounding or curvature of the surface or web ends is eliminated.
- FIG. 8 another perspective view of the embodiment of FIG Fig. 6 and 7th shown in the selection of the view of the Fig. 3 resembles.
- the Fig. 7 the features of the webs 04.1 to 04.4 can be seen, although the perspective view of Fig. 8 makes the representation appear relatively complex.
- the reduced width B of the webs 04.3 of the web structure 06 remote from the center is not, as in FIG Fig. 2 recognizable, is constant, but steadily decreases due to the curved surface O and is tapered towards a pointed end of the web.
- the transitions between webs 04.3 and webs 04.4 can also be seen otherwise.
- the transitions between the webs 04.4 and the webs 04.2 close to the center can also be seen.
Abstract
Die Erfindung betrifft einen Mischereinsatz für einen statischen Mischer umfassend eine Vielzahl Mischelementen, die entlang einer Längsmittelachse hintereinander, bevorzugt unmittelbar aneinander angrenzend, angeordnet, sind, wobei die Mischelemente eine Steganordnung mit einer Vielzahl von sich kreuzenden und/oder aneinander angrenzenden Stegen aufweist, wobei zumindest zwei entlang der Längsmittelachse, bevorzugt unmittelbar, hintereinander angeordnete Mischelemente eine um einen Rotationswinkel, bevorzugt 90°, gegeneinander gedreht angeordnete, bevorzugt ansonsten identische, Steganordnungen aufweisen. Gekennzeichnet ist die vorliegende Erfindung dadurch, dass der gesamte Mischereinsatz als einteiliges, bevorzugt spritzgegossenes, Bauteil, insbesondere Kunststoffbauteil, ausgebildet ist.The invention relates to a mixer insert for a static mixer comprising a plurality of mixing elements, which are arranged one behind the other, preferably directly adjacent to one another, along a central longitudinal axis, the mixing elements having a web arrangement with a plurality of crossing and / or adjacent webs, wherein at least two mixing elements arranged along the longitudinal center axis, preferably directly one behind the other, have a preferably otherwise identical web arrangements which are rotated relative to one another by an angle of rotation, preferably 90 °. The present invention is characterized in that the entire mixer insert is designed as a one-piece, preferably injection-molded, component, in particular a plastic component.
Description
Die Erfindung betrifft einen Mischereinsatz für einen statischen Mischer gemäß dem Oberbegriff des Anspruchs 1 umfassend eine Vielzahl entlang einer Längsmittelachse hintereinander, bevorzugt unmittelbar aneinander angrenzend, angeordneter Mischelemente, wobei die Mischelemente eine Steganordnung mit einer Vielzahl von sich kreuzenden und/oder aneinander angrenzenden Stegen aufweisen, wobei zumindest zwei entlang der Längsmittelachse, bevorzugt unmittelbar, hintereinander angeordnete Mischelemente eine um einen Rotationswinkel, bevorzugt 90°, gegeneinander gedrehte, bevorzugt ansonsten identische, Steganordnungen aufweisen.The invention relates to a mixer insert for a static mixer according to the preamble of claim 1 comprising a plurality of mixing elements arranged one behind the other along a central longitudinal axis, preferably directly adjacent to one another, the mixing elements having a web arrangement with a plurality of crossing and / or adjacent webs, wherein at least two mixing elements arranged along the longitudinal center axis, preferably directly one behind the other, have a preferably otherwise identical web arrangement rotated relative to one another by an angle of rotation, preferably 90 °.
Ferner betrifft die Erfindung einen statischen Mischer mit einem erfindungsgemäßen Mischereinsatz gemäß Patentanspruch 14 sowie ein Verfahren zum Herstellen eines Mischereinsatzes gemäß Patentanspruch 15.The invention further relates to a static mixer with a mixer insert according to the invention according to claim 14 and a method for producing a mixer insert according to claim 15.
In der auf die Anmelderin zurückgehende
Weiter sind aus dem Stand der Technik bereits andere Mischeinsätze, insbesondere einteilige Mischeinsätze, bekannt, die zwar verhältnismäßig einfach hergestellt, insbesondere gespritzt, werden können, die jedoch hinsichtlich der Mischwirkung oder hinsichtlich der Mischeffizienz und/oder im Bezug auf den Druckverlust verbesserungsbedürftig sind.Furthermore, other mixing inserts, in particular one-piece mixing inserts, are already known from the prior art, which can be manufactured relatively easily, in particular injection molded, but which are in need of improvement with regard to the mixing effect or with regard to the mixing efficiency and / or with regard to the pressure loss.
Vor diesem Hintergrund liegt die Aufgabe der vorliegenden Erfindung darin, einen einfach, insbesondere im Spritzgussverfahren, besonders bevorzugt im Kunststoff-Spritzgussverfahren, fertigbaren Mischeinsatz für einen statischen Mischer anzugeben, der sich durch die einfache Fertigbarkeit auszeichnet und gleichzeitig einen geringen Durchströmungswiderstand und eine hohe Mischleistung oder Mischeffizienz ermöglicht oder bereitstellt. Ferner besteht die Aufgabe der vorliegenden Erfindung in dem Angeben eines weiterentwickelten statischen Mischers, der eine effiziente Mischung bei verhältnismäßig geringem Durchströmungswiderstand ermöglicht sowie einem Verfahren zum Herstellen eines Mischereinsatzes für einen statischen Mischer, welches eine einfache und robuste Herstellung eines effizienten Mischereinsatzes ermöglicht.Against this background, the object of the present invention is to provide a mixing insert for a static mixer that can be manufactured easily, in particular in the injection molding process, particularly preferably in the plastic injection molding process, which is characterized by the ease of manufacture and at the same time a low flow resistance and a high mixing performance or Mixing efficiency enables or provides. Furthermore, the object of the present invention is to provide a further developed static mixer which enables efficient mixing with relatively low flow resistance and a method for producing a mixer insert for a static mixer which enables simple and robust production of an efficient mixer insert.
Diese Aufgabe wird hinsichtlich des Mischereinsatzes mit den Merkmalen des Anspruchs 1 gelöst, d.h. bei einem gattungsgemäßen Mischereinsatz dadurch, dass der gesamte Mischereinsatz nunmehr als einteiliges, bevorzugt spritzgegossenes, Bauteil, insbesondere Kunststoffbauteil, ausgebildet ist.With regard to the mixer insert, this object is achieved with the features of claim 1, that is to say in the case of a generic mixer insert in that the entire mixer insert is now a one-piece, is preferably an injection-molded component, in particular a plastic component.
Die Grundidee der vorliegenden Erfindung basiert auf der überraschenden der Erkenntnis, dass bei einer minimalen oder geringfügigen Abweichung der Geometrie der Mischelemente des Mischereinsatzes, welche in der abgewandelten Form nicht ausschließlich sich kreuzende Stege vorsieht, sondern zusätzlich zu den sich kreuzenden Stegen auch vereinzelt Stege umfasst, die an anderen Stegen angrenzen und/oder in andere Stege übergehen, der Mischereinsatz bei minimalen Einbußen hinsichtlich Mischeffizienz und Druckverlust bzw. minimaler Zunahme des Durchströmungswiderstands in einem verhältnismäßig einfachen Spritzgussverfahren, insbesondere Kunststoff-Spritzgussverfahren, an einem Stück, also als gesamter Mischereinsatz, hergestellt werden kann.The basic idea of the present invention is based on the surprising finding that in the case of a minimal or slight deviation in the geometry of the mixing elements of the mixer insert, which in the modified form does not only provide intersecting webs, but also includes individual webs in addition to the crossing webs, that adjoin other webs and / or merge into other webs, the mixer insert can be manufactured in one piece, i.e. as a complete mixer insert, with minimal losses in terms of mixing efficiency and pressure loss or minimal increase in flow resistance in a relatively simple injection molding process, in particular plastic injection molding process can.
Dadurch wird erreicht, dass sowohl deutlich kleinere und filigranere Mischereinsätze hergestellt werden können als im Stand der Technik, insbesondere unter Beibehaltung der Mischeffizienz und des Druckverlustes. Gleichzeitig können die erfindungsgemäßen Mischereinsätze besonders schnell, einfach und kostengünstig hergestellt werden, da insbesondere die manuelle Zusammenfügung von zwei oder mehr Teilmischeinsätzen zu einem Gesamtmischeinsatz entfällt.It is thereby achieved that both significantly smaller and more filigree mixer inserts can be produced than in the prior art, in particular while maintaining the mixing efficiency and the pressure loss. At the same time, the mixer inserts according to the invention can be produced particularly quickly, simply and inexpensively, since in particular the manual assembly of two or more partial mixing inserts to form a total mixing insert is dispensed with.
Gemäß einer ersten vorteilhaften Ausführungsform des erfindungsgemäßen Mischereinsatzes kann vorgesehen sein, dass die Steganordnung eine erste Gruppe von Stegen umfasst, deren Längserstreckung parallel zu einer Gitterebene verläuft, die eine Längsmittelachse des Mischereinsatzes umfasst. Die erste Gruppe von Stegen der Steganordnung jedes Mischelements stellt die Stege bereit, die im Wesentlichen eine sich kreuzende Anordnung ausbilden, nämlich mit Kreuzungspunkten oder Kreuzungsachsen, die senkrecht auf der besagten Gitterebene stehen oder senkrecht zur besagten Gitterebene verlaufen.According to a first advantageous embodiment of the mixer insert according to the invention it can be provided that the web arrangement comprises a first group of webs, the longitudinal extent of which runs parallel to a lattice plane which comprises a longitudinal center axis of the mixer insert. The first group of webs of the web arrangement of each mixing element provides the webs which essentially form an intersecting arrangement, namely with intersection points or intersection axes that are perpendicular to the said lattice plane or perpendicular to said lattice plane.
Damit tragen die Stege der ersten Gruppe der Steganordnung ganz wesentlich zur Mischeffizienz des Mischereinsatzes bei gleichzeitig geringem Druckverlust bei.The webs of the first group of the web arrangement thus make a very significant contribution to the mixing efficiency of the mixer insert while at the same time reducing the pressure loss.
Die Stege der ersten Gruppe der Steganordnung sind senkrecht zur Längsmittelachse und senkrecht zur Gitterebene in Reihen, insbesondere in vier Reihen, angeordnet. Zur besseren Beschreibbarkeit der Struktur der Stege und der Steganordnung der ersten Gruppe werden die Reihen nachfolgend beschrieben mit Bezug zu einer zentrumsnahen und einer zentrumsfernen Struktur. Bei der zentrumsnahen Struktur soll es sich dementsprechend um die Reihen von Stegen handeln, welche auf einer Seite unmittelbar an die Längsmittelachse angrenzen. Bei den zentrumsfernen Strukturen soll es sich dementsprechend um die Reihen von Stegen handeln, die sich senkrecht zur Gitterebene an die Reihen der zentrumsnahen Stegstruktur beidseitig anschließen.The bars of the first group of the bar arrangement are arranged perpendicular to the longitudinal center axis and perpendicular to the lattice plane in rows, in particular in four rows. To make the structure of the webs and the web arrangement of the first group easier to describe, the rows are described below with reference to a structure close to the center and a structure remote from the center. The structure close to the center should accordingly be the rows of webs which on one side directly adjoin the longitudinal center axis. The structures remote from the center should accordingly be the rows of webs that adjoin the rows of the web structure close to the center on both sides perpendicular to the lattice plane.
Gemäß einer besonders vorteilhaften Ausgestaltung des Mischereinsatzes kann vorgesehen sein, dass die erste Gruppe von Stegen eine zentrumsnahe Stegstruktur umfasst, welche Stege auf beiden Seiten der Gitterebene aufweist, wobei bevorzugt die Stege die Form einer liegenden Acht oder zweier nebeneinander angeordneter Rauten oder Parallelogramme entlang der Längsmittelachse ausbilden und wobei weiter bevorzugt aneinander angrenzende Stege jeweils auf unterschiedlichen Seiten der Gitterebene angeordnet sind. Dadurch wird in der zentrumsnahen Stegstruktur die Grundvoraussetzung für die Gesamtsteganordnung des Mischelements mit einer Vielzahl von sich kreuzenden Stegen gebildet. Dementsprechend sind die Stege der zentrumsnahen Stegstruktur eine besonders vorteilhafte Grundform oder Grundgeometrie zur Ausbildung eines Mischereinsatzes mit einer besonders hohen Mischeffizienz. Es kann in der zentrumsnahen Stegstruktur entlang der Längsachse auch eine ganzzahlige oder halbzahlige Vervielfachung der Stege der ersten Gruppe vorgenommen werden. Es können also drei oder mehr entlang der Längsmittelachse hintereinander angeordneter Rauten vorgesehen oder ausgebildet sein. Ebenfalls kann bei Bedarf auch nur eine Raute von den Stegen der zentrumsnahen Stegstruktur ausgebildet werden.According to a particularly advantageous embodiment of the mixer insert, it can be provided that the first group of webs comprises a central web structure which has webs on both sides of the lattice plane, the webs preferably in the form of a lying figure of eight or two diamonds or parallelograms arranged next to one another along the longitudinal center axis form and wherein more preferably mutually adjoining webs are each arranged on different sides of the lattice plane. As a result, in the web structure close to the center, the basic prerequisite for the overall web arrangement of the mixing element with a large number of crossing webs is formed. Accordingly, the webs of the web structure close to the center are or are a particularly advantageous basic shape Basic geometry for the formation of a mixer insert with a particularly high mixing efficiency. In the web structure close to the center, the webs of the first group can also be multiplied by an integer or half number along the longitudinal axis. Thus, three or more diamonds arranged one behind the other along the longitudinal center axis can be provided or formed. If necessary, only one rhombus can also be formed from the webs of the web structure close to the center.
Gemäß einer besonders bevorzugten Ausgestaltung kann weiter vorgesehen sein, dass die Stege der zentrumsnahen Stegstruktur an einem oder an beiden Enden die Gitterebene durchdringende Aufweitungen aufweisen, um eine bessere Stabilität der aneinander angrenzenden Stege der zentrumsnahen Stegstruktur zu erreichen.According to a particularly preferred embodiment, it can further be provided that the webs of the web structure close to the center have widenings penetrating the lattice plane at one or both ends in order to achieve better stability of the webs adjacent to one another of the web structure close to the center.
Die Aufweitungen der Enden verlaufen, um entsprechend die Gitterebene durchdringen zu können, zumindest auch senkrecht zur Gitterebene, also in Richtung einer Stegbreite der ersten Gruppe von Stegen. Besonders vorteilhaft hat sich herausgestellt, dass derartige Aufweitungen an Enden von Stegen zwar einerseits die Stabilität des Mischereinsatzes positiv beeinflussen, gleichzeitig jedoch keinen negativen Einfluss auf die einteilige Herstellung des Mischereinsatzes ausüben und gleichermaßen vorteilhaft auch keinen merklichen Einfluss auf die Mischeffizienz und den Druckabfall oder Durchströmungswiderstand ausüben.The widened ends of the ends run in order to be able to penetrate the lattice plane accordingly, at least also perpendicular to the lattice plane, that is to say in the direction of a web width of the first group of webs. It has been found to be particularly advantageous that such widenings at the ends of webs have a positive effect on the stability of the mixer insert on the one hand, but at the same time do not have a negative influence on the one-piece manufacture of the mixer insert and equally advantageously have no noticeable influence on the mixing efficiency and the pressure drop or flow resistance .
Gemäß einer weiteren besonders wünschenswerten Variante des Mischereinsatzes kann zudem vorgesehen sein, dass die erste Gruppe von Stegen eine zentrumsferne Stegstruktur umfasst, welche Stege auf beiden Seiten der Gitterebene aufweist, wobei bevorzugt die Stege die Form eines Kreuzes und einer konzentrisch zum Kreuz angeordneten Raute ausbilden, wobei weiter bevorzugt auf jeder Seite der Gitterebene drei Stege angeordnet sind, die jeweils parallel zueinander verlaufen.According to a further particularly desirable variant of the mixer insert it can also be provided that the first group of webs comprises a web structure remote from the center which has webs on both sides of the lattice plane, the webs preferably in the form of a cross and one arranged concentrically to the cross Form rhombus, with three webs further preferably being arranged on each side of the lattice plane, each of which runs parallel to one another.
Auch die Stege der zentrumsfernen Stegstruktur der Gitterebene haben einen nicht unerheblichen Beitrag zur Ausbildung sich kreuzender Stege und führen dementsprechend in besonderem Maße zu der hohen Mischeffizienz des einteiligen Mischereinsatzes.The webs of the web structure of the lattice plane remote from the center also make a not inconsiderable contribution to the formation of intersecting webs and accordingly lead to a particularly high degree of the high mixing efficiency of the one-piece mixer insert.
Bei einer Ausgestaltung mit drei, bevorzugt parallelen, Stegen weist die zentrumsferne Stegstruktur eine Punktsymmetrie zum Mittelpunkt der Gitterebene auf. Es könnten davon abweichend aber auch andere Ausführungsformen, mit beispielsweise mehr Stegen, vorgesehen werden. Beispielsweise könnte eine, entlang der Längsmittelachse vorgenommene und womöglich gespiegelte, Duplizierung der Stege vorgesehen werden, die dann insgesamt mit den Stegen auf beiden Seiten der Gitterebene zwei Kreuze und zwei zu den Kreuzen konzentrisch angeordnete Rauten ausbilden.In an embodiment with three, preferably parallel, webs, the web structure remote from the center has point symmetry with respect to the center point of the lattice plane. Deviating from this, however, other embodiments, for example with more webs, could also be provided. For example, a duplication of the webs made along the longitudinal center axis and possibly mirrored could be provided, which then together with the webs on both sides of the lattice plane form two crosses and two diamonds arranged concentrically to the crosses.
Gemäß einer ebenfalls besonders bevorzugten Ausgestaltung des Mischereinsatzes kann zudem vorgesehen sein, dass die das Kreuz ausbildenden Stege der zentrumsfernen Stegstruktur an den Übergängen der Mischelemente miteinander verbunden sind und/oder ineinander übergehen. Sollten mehr als drei Stege auf jeder Seite der Gitterebene die zentrumsferne Stegstruktur ausbilden, kann alternativ oder in einer entsprechenden Verallgemeinerung auch vorgesehen sein, dass jeweils Stege, die in einem Eckpunkt des jeweiligen Mischelements enden, in einen Steg eines benachbarten Mischelements übergehen oder mit diesem verbunden sind, welcher ebenfalls in einem Eckpunkt des nachfolgenden oder vorangehenden Mischelements endet. Die Verbindung kann dabei in einer möglichst punktuellen Ausgestaltung sich im Wesentlichen auf die besagte Ecke oder die aneinander angrenzenden Ecken der jeweiligen Mischelemente erstrecken. Realistisch erstreckt sich die Verbindung oder der Übergang der Stege der zentrumsfernen Stegstruktur jedoch zumindest über die Steghöhe der zwei verbundenen oder ineinander übergehenden Stege.According to a likewise particularly preferred embodiment of the mixer insert, it can also be provided that the webs forming the cross of the web structure remote from the center are connected to one another and / or merge into one another at the transitions of the mixing elements. If more than three webs on each side of the lattice plane form the web structure remote from the center, it can alternatively or in a corresponding generalization also be provided that webs that end at a corner point of the respective mixing element merge into or are connected to a web of an adjacent mixing element which also ends in a corner point of the following or preceding mixing element. The connection, in a configuration that is as punctiform as possible, can essentially focus on said corner or on those adjacent to one another Extend corners of the respective mixing elements. Realistically, however, the connection or the transition of the webs of the web structure remote from the center extends at least over the web height of the two webs connected or merging into one another.
Gemäß einer ebenfalls bevorzugten Ausgestaltung des erfindungsgemäßen Mischereinsatzes kann zudem vorgesehen sein, dass die die Raute oder das Rechteck ausbildenden Stege der zentrumsfernen Stegstruktur der Gitterebene in Richtung senkrecht auf der Gitterebene eine abschnittsweise verringerte Breite, insbesondere in Endbereichen, die mittig im Mischelement angeordnet sind, aufweisen. Durch diese abschnittsweise oder zumindest abschnittsweise Verringerung der Breite der Stege kann in besonders vorteilhafter Weise eine Verringerung des Druckverlustes erreicht werden, ohne dass dadurch die Mischeffizienz merklich verschlechtert wird. Gleichermaßen kann die verringerte Breite senkrecht zur Gitterebene ohne besondere Herausforderungen im Rahmen eines Spritzgussverfahrens, insbesondere im Rahmen eines Kunststoff-Spritzgussverfahrens, hergestellt werden. Auch bei abgewandelten Steganordnungen oder zentrumsfernen Stegstrukturen, beispielsweise bei einer zentrumsfernen Stegstruktur mit mehr oder weniger als drei Stegen auf jeder Seite der Gitterebene, kann verallgemeinernd vorgesehen sein, dass jeweils ein oder mehrere Stege, deren einseitigen Endbereiche am Rand eines Mischelements bezogen auf die Richtung der Längsmittelachse mittig im Mischelement angeordnet sind, eine endseitig verringerte Breite aufweisen.According to another preferred embodiment of the mixer insert according to the invention, it can also be provided that the webs of the central web structure of the grid plane forming the rhombus or the rectangle have a width that is reduced in sections in the direction perpendicular to the grid plane, in particular in end areas that are arranged in the center of the mixing element . By reducing the width of the webs in sections or at least in sections, a reduction in the pressure loss can be achieved in a particularly advantageous manner without the mixing efficiency being noticeably impaired as a result. Equally, the reduced width can be produced perpendicular to the lattice plane without any particular challenges within the framework of an injection molding process, in particular within the framework of a plastic injection molding process. Even with modified bar arrangements or bar structures remote from the center, for example with a bar structure remote from the center with more or less than three bars on each side of the lattice plane, it can generally be provided that in each case one or more bars, whose one-sided end regions at the edge of a mixing element in relation to the direction of the The longitudinal center axis are arranged centrally in the mixing element and have a width that is reduced at the end.
Ebenfalls kann gemäß einer weiteren vorteilhaften Ausführungsform vorgesehen sein, dass die Steganordnung der Mischelemente eine zweite Gruppe von Stegen umfasst, deren Längserstreckung senkrecht zu einer Flügelebene verläuft, wobei die Flügelebene eine Längsmittelachse des Mischereinsatzes umfasst und senkrecht zur Gitterebene angeordnet ist.According to a further advantageous embodiment it can also be provided that the web arrangement of the mixing elements comprises a second group of webs, the longitudinal extent of which runs perpendicular to a wing plane, the wing plane comprising a longitudinal center axis of the mixer insert and being arranged perpendicular to the lattice plane.
Die Stege der zweiten Gruppe, die entlang einer Flügelebene verlaufen, stellen eine zumindest teilweise Abkehr vom Prinzip sich ausschließlich kreuzender Stege dar. Dadurch wird zwar in sehr geringfügigem Umfang die Mischeffizienz und der Durchströmungswiderstand des Mischereinsatzes negativ beeinflusst, gleichzeitig ermöglicht jedoch diese geringfügige Abweichung von einer Steganordnung mit ausschließlich sich kreuzenden Stegen, dass der Mischereinsatz einteilig und bevorzugt im Spritzgussverfahren, beispielsweise im Kunststoff-Spritzgussverfahren, hergestellt oder herstellbar wird.The webs of the second group, which run along a wing plane, represent an at least partial departure from the principle of exclusively crossing webs. Although this has a very slight negative effect on the mixing efficiency and the flow resistance of the mixer insert, this slight deviation from one is possible at the same time Web arrangement with exclusively crossing webs, that the mixer insert is manufactured or can be manufactured in one piece and preferably by injection molding, for example by plastic injection molding.
Gemäß einer vorteilhaften Ausführungsform kann vorgesehen sein, dass die zweite Gruppe von Stegen eine in Längsrichtung des Mischelements endseitig und/oder eine mittig angeordnete Stegstruktur aufweisen, welche bevorzugt jeweils Stege auf beiden Seiten der Flügelebene aufweist, wobei weiter bevorzugt die Stegstruktur jeweils die Form eines Dachs oder Winkels ausbildet oder zumindest umfasst. Bei einem Vorsehen von Stegen, die sowohl eine entlang der Längsmittelachse oder in Längsrichtung des Mischelements endseitige und mittig angeordnete Stegstrukturen aufweist, kann besonders vorteilhaft vorgesehen sein, dass die Dachform oder Winkelform der dann zwei Stegstrukturen gleichorientiert sind, d.h., dass der Winkel oder die Dachform in die gleiche Richtung weisen und/oder die Stege parallel, wenn auch ggf. auf unterschiedlichen Seiten der Flügelebene, verlaufen. Es kann zudem auch vorgesehen sein, dass mehr Stege von der zweiten Gruppe von Stegen umfasst sind. Beispielsweise können durch die Stege Zisckzacklinien statt Dach- oder Winkelformen ausgebildet werden. Alternativ oder zusätzlich können auch mehrere Stege entlang der Längsmittelachse angeordnet werden, so dass mehr als ein oder zwei Winkelstrukturen ausgebildet werden.According to an advantageous embodiment it can be provided that the second group of webs have a web structure arranged in the longitudinal direction of the mixing element at the end and / or a centrally arranged web structure, which preferably has webs on both sides of the wing plane, the web structure further preferably in the form of a roof or angle forms or at least includes. If webs are provided which have web structures arranged at the end and in the center along the longitudinal center axis or in the longitudinal direction of the mixing element, it can be particularly advantageously provided that the roof shape or the angular shape of the then two web structures are oriented in the same way, that is, the angle or the roof shape point in the same direction and / or the webs run parallel, even if possibly on different sides of the plane of the wing. It can also be provided that more webs are included in the second group of webs. For example, zigzag lines instead of roof or angular shapes can be formed by the webs. Alternatively or additionally, several webs can also be arranged along the longitudinal center axis, so that more than one or two angular structures are formed.
Die Stege der zweiten Gruppe, also die Stege, welche senkrecht zur Flügelebene verlaufen, tragen auch zur Mischeffizienz des Mischereinsatzes bei und ermöglichen gleichermaßen die Herstellung des Mischereinsatzes als einteiliges Bauteil, bevorzugt im Rahmen eines Spritzgussverfahrens.The webs of the second group, i.e. the webs that run perpendicular to the wing plane, also contribute to the mixing efficiency of the mixer insert and also enable the mixer insert to be manufactured as a one-piece component, preferably in the context of an injection molding process.
Gemäß einer weiteren, vorteilhaften Ausführungsform kann zudem vorgesehen sein, dass die die Raute oder das Rechteck ausbildenden Stege der zentrumsfernen Stegstruktur der Gitterebene an den Übergängen der Mischelemente von jeweils zwei, bevorzugt unmittelbar nebeneinander, angeordneten Mischelementen mit endseitig angeordneten Stegen der Flügelebene verbunden sind und/oder in diese übergehen. Diese Verbindung oder dieser Übergang ist bevorzugt auf der gleichen Seite der Gitterebene ausgebildet. Die Verbindung oder der Übergang verläuft bevorzugt über die gesamte Breite des die Raute oder das Rechteck ausbildenden Stegs. Bei einer anders gearteten Ausführungsform der zentrumsfernen Stegstruktur der Gitterebene kann vorgesehen sein, dass jeweils Stege die in Längsrichtung oder entlang der Längsmittelachse an einer Grenze oder einem Rand des Mischelements im Bereich der Gitterebene enden, mit endseitig angeordneten Stegen der Flügelebene verbunden sind und/oder in diese übergehen.According to a further advantageous embodiment, it can also be provided that the webs forming the rhombus or the rectangle of the web structure of the lattice plane remote from the center are connected to the transitions of the mixing elements by two mixing elements, preferably arranged directly next to one another, with webs arranged at the end of the wing plane and / or go into this. This connection or this transition is preferably formed on the same side of the lattice plane. The connection or the transition preferably runs over the entire width of the web forming the rhombus or the rectangle. In a different embodiment of the web structure of the lattice plane remote from the center, it can be provided that webs that end in the longitudinal direction or along the longitudinal center axis at a boundary or an edge of the mixing element in the area of the lattice plane are connected to webs arranged at the end of the wing plane and / or in skip this.
Auch wenn dadurch eine geringfügige Erhöhung des Druckverlustes verbunden ist, ist der Übergang oder die Verbindung zwischen den besagten Stegen sowohl für die mechanische Stabilität des Mischereinsatzes als auch für die Herstellbarkeit als einstückiger Mischereinsatz im Rahmen eines Spritzgussverfahrens von besonderem Vorteil.Even if this results in a slight increase in the pressure loss, the transition or the connection between the said webs is of particular advantage both for the mechanical stability of the mixer insert and for the manufacturability as a one-piece mixer insert in the context of an injection molding process.
In einer weiteren, besonders vorteilhaften Ausgestaltung des Mischereinsatzes kann zudem vorgesehen sein, dass die Stege der zentrumsfernen Stegstruktur und die Stege der Flügelebene an den äußeren, von der Längsmittelachse abgewandten Enden eine gekrümmte Oberfläche aufweisen, wobei die Krümmung so gewählt wird, dass entlang der Längsmittelachse ein ovaler, bevorzugt elliptischer, besonders bevorzugt kreisrunder Querschnitt des gesamten Mischereinsatzes entlang der Längsmittelachse gebildet wird. Die Krümmungen werden einzeln also individuell so gestaltet, dass eine einhüllender Gesamtoberflächenverlauf erzeugt wird, der im Querschnitt oval, bevorzugt elliptisch, besonders bevorzugt kreisrund ist. Alternativ kann auch ein rechteckiger oder quadratischer Querschnitt vorgesehen sein. Der ovale, bevorzugt elliptische, besonders bevorzugt kreisrunde Querschnitt hat den Vorteil, dass sich dieser zusammen mit einer Vielzahl von verbreiteten, kreisrunden Mischhülsen bekannter statischer Mischer kombinieren lässt. Da in der Vergangenheit jedoch auch immer mehr statische Mischer bekannt geworden sind, deren Mischhülse einen rechteckigen, bevorzugt quadratischen, Querschnitt, insbesondere der Mischhülse, aufweisen, kann auch diese Ausführungsform vorteilhaft sein, insbesondere unter Berücksichtigung der Tatsache, dass bei einem rechteckigen oder quadratischen Querschnitt ein verhältnismäßig geringerer Durchströmungswiderstand erreicht wird. Bei der ovalen, elliptischen oder kreisrunden Ausgestaltung kann besonders vorteilhaft vorgesehen sein, dass die sonstigen Stege, Stegstrukturen und Ebenen identisch zu einem quadratischen oder rechteckigen Querschnitt ausgebildet sind.In a further, particularly advantageous embodiment of the mixer insert it can also be provided that the webs of the The web structure remote from the center and the webs of the wing plane at the outer ends facing away from the longitudinal center axis have a curved surface, the curvature being selected such that an oval, preferably elliptical, particularly preferably circular cross-section of the entire mixer insert is formed along the longitudinal center axis along the longitudinal center axis . The curvatures are individually designed in such a way that an enveloping overall surface profile is produced which is oval, preferably elliptical, particularly preferably circular, in cross section. Alternatively, a rectangular or square cross section can also be provided. The oval, preferably elliptical, particularly preferably circular cross-section has the advantage that it can be combined with a large number of common, circular mixing sleeves of known static mixers. However, since more and more static mixers have become known in the past, the mixing sleeve of which has a rectangular, preferably square, cross-section, in particular the mixing sleeve, this embodiment can also be advantageous, in particular taking into account the fact that with a rectangular or square cross-section a relatively lower flow resistance is achieved. In the case of the oval, elliptical or circular configuration, it can be particularly advantageously provided that the other webs, web structures and planes are designed identically to a square or rectangular cross section.
Es kann vorteilhaft vorgesehen sein, dass der Mischereinsatz eine Hintereinanderanordnung von 4 bis 48, bevorzugt 8 bis 24, Mischelementen umfasst. Zumindest zwei bevorzugt aber alle Mischelemente sind jeweils um einen Rotatoinswinkel, bevorzugt 90°, zum benachbarten Mischelement verdreht. Die Länge des Mischereinsatzes und/oder die Anzahl der Mischelemente kann je nach zu verarbeitendem Mehr-Komponenten-Material und je nach Einsatzzweck variiert werden, wobei grundsätzlich davon ausgegangen werden kann, dass mit einer größeren Anzahl von Mischelementen eine homogenere Mischung erreicht wird als mit weniger Mischelementen. Gleichzeitig gilt jedoch auch, dass ab einer vollständigen Homogenisierung, also einer vollständigen Durchmischung, der 2- oder Mehr-Komponenten-Ausgangsstoffe eine zusätzliche Anzahl von Mischelementen nur noch den Durchströmungswiderstand erhöht und keine zusätzliche Mischeffizienz mehr beisteuert. Deshalb kann, je nach Anwendungsfall, eine entsprechende Wahl der Anzahl von Mischelementen vorteilhaft sein.It can advantageously be provided that the mixer insert comprises a series arrangement of 4 to 48, preferably 8 to 24, mixing elements. At least two, preferably but all, mixing elements are each rotated by a rotational angle, preferably 90 °, to the adjacent mixing element. The length of the mixer insert and / or the number of mixing elements can vary depending on the Multi-component material and can be varied depending on the intended use, whereby it can basically be assumed that a more homogeneous mixture is achieved with a larger number of mixing elements than with fewer mixing elements. At the same time, however, it also applies that from a complete homogenization, i.e. a complete mixing, of the 2- or multi-component starting materials an additional number of mixing elements only increases the flow resistance and no longer contributes any additional mixing efficiency. Therefore, depending on the application, a corresponding choice of the number of mixing elements can be advantageous.
Im Hinblick auf den statischen Mischer zum Mischen von, insbesondere dentalmedizinischen, Mehrkomponenten-Materialsystemen, umfassend eine Mischhülse, insbesondere mit einends angeordneten Anschlussmitteln zum Verbinden mit einer Ausgabevorrichtung des Mehrkomponenten-Materialsystems und andernends angeordneten Ausgabemitteln, bevorzugt einer Ausgabedüse oder Ausgabeöffnung, wird die eingangs genannte Aufgabe dadurch gelöst, dass in der Mischhülse ein Mischereinsatz gemäß der vorangehend beschriebenen Art aufgenommen ist. Dadurch kann ein statischer Mischer zur Verfügung gestellt werden, der gleichzeitig eine besonders große Mischeffizienz aufweist und besonders einfach und unkompliziert und damit auch mit geringen Kosten hergestellt werden kann.With regard to the static mixer for mixing, in particular dental-medical, multi-component material systems, comprising a mixing sleeve, in particular with connection means arranged at one end for connection to an output device of the multi-component material system and output means arranged at the other end, preferably an output nozzle or output opening, the aforementioned The object is achieved in that a mixer insert according to the type described above is received in the mixing sleeve. As a result, a static mixer can be made available which at the same time has a particularly high mixing efficiency and can be produced in a particularly simple and uncomplicated manner and thus also at low costs.
In Bezug auf das erfindungsgemäße Verfahren zum Herstellen eines Mischereinsatzes gemäß der vorangehenden Beschreibung wird die Aufgabe dadurch gelöst, dass der Mischereinsatz mit einem einzigen Spritzgussverfahren, insbesondere einem Kunststoff-Spritzgussverfahren, bevorzugt mit einem Backenwerkzeug mit zwei senkrecht zur Hauptausformrichtung angeordneten Schiebern, hergestellt wird. Dies erlaubt, dass die komplexe Stegstruktur des oben beschriebenen Mischereinsatzes im Rahmen eines einzigen Spritzguss-Prozesses hergestellt wird, bei dem zunächst die Backen des Backenwerkzeuges geschlossen werden, anschließend die Schieber senkrecht zur Hauptausformrichtung des Mischereinsatzes in das Backenwerkzeug eingeführt, anschließend das Spritzgusswerkzeug oder die Spritzgussform ausgespritzt und nach Entnehmen oder Entfernen der Schieber und Öffnen der Backen des Backenwerkzeugs der fertig gespritzte Mischereinsatz aus dem geöffneten Backenwerkzeug, insbesondere durch eine seitliche Entformung, entformt wird.With regard to the method according to the invention for producing a mixer insert according to the preceding description, the object is achieved in that the mixer insert is produced with a single injection molding process, in particular a plastic injection molding process, preferably with a jaw tool with two slides arranged perpendicular to the main shaping direction. This allows the complex web structure of the one described above Mixer insert is manufactured as part of a single injection molding process, in which the jaws of the jaw tool are first closed, then the slider is inserted perpendicular to the main shaping direction of the mixer insert into the jaw tool, then the injection molding tool or the injection mold is injected and after removing or removing the slider and opening it the jaws of the jaw tool, the fully injection-molded mixer insert is removed from the mold from the open jaw tool, in particular by means of a lateral removal from the mold.
Nachfolgend werden einzelne Ausführungsformen und Vorteile der vorliegenden Erfindung anhand der schematischen Zeichnungen beschrieben.Individual embodiments and advantages of the present invention are described below with reference to the schematic drawings.
Darin zeigen:
- Fig. 1:
- ein erfindungsgemäßer Mischereinsatz in einer Draufsicht in einer ersten Ausführungsform;
- Fig. 2:
- einen vergrößerten Ausschnitt des Mischereinsatzes in einer Draufsicht gemäß
Fig. 1 ; - Fig. 3:
- eine perspektivische Ansicht des vergrößerten Ausschnitts gemäß
Fig. 2 ; - Fig. 4a-c:
- stark schematisierte Darstellung von einzelnen Stegstrukturen eines erfindungsgemäßen Mischereinsatzes gemäß einer ersten Ausführungsform;
- Fig. 5:
- eine perspektivische Darstellung eines erfindungsgemäßen Mischereinsatzes gemäß einer ersten Ausführungsform;
- Fig. 6:
- eine perspektivische Darstellung eines erfindungsgemäßen Mischereinsatzes gemäß einer zweiten Ausführungsform;
- Fig. 7:
- ein Ausschnitt des Mischereinsatzes gemäß
Fig. 6 in einer vergrößerten Draufsicht; - Fig.8:
- eine perspektivische Darstellung des vergrößerten Ausschnitts gemäß
Fig. 5 .
- Fig. 1:
- a mixer insert according to the invention in a plan view in a first embodiment;
- Fig. 2:
- an enlarged section of the mixer insert in a plan view according to
Fig. 1 ; - Fig. 3:
- a perspective view of the enlarged section according to
Fig. 2 ; - Fig. 4a-c:
- highly schematic representation of individual web structures of a mixer insert according to the invention according to a first embodiment;
- Fig. 5:
- a perspective view of a mixer insert according to the invention according to a first embodiment;
- Fig. 6:
- a perspective view of a mixer insert according to the invention according to a second embodiment;
- Fig. 7:
- a section of the mixer insert according to
Fig. 6 in an enlarged plan view; - Fig. 8:
- a perspective view of the enlarged section according to FIG
Fig. 5 .
Die
Die
Weiterhin umfasst die erste Gruppe von Stegen 04.1 eine zentrumsferne Stegstruktur, deren Stege 04.3 auf beiden Seiten der Gitterebene angeordnet sind und wobei die Stege 04.3 bevorzugt die Form eines Kreuzes und einer konzentrisch zum Kreuz angeordneten Raute oder Rechteck ausbilden, wobei, weiter bevorzugt, auf jeder Seite der Gitterebene EG drei Stege 04.3 angeordnet sind, die jeweils parallel zueinander verlaufen. Im Beispiel der
Die äußeren Mischelemente 02 in der Darstellung der
Einerseits ist zu erkennen, dass die Stege 04.1 der ersten Gruppe insgesamt vier Reihen ausbilden, von denen die zwei inneren Reihen die zentrumsnahe Stegstruktur 05 ausbilden, wobei die außen liegenden Stege die zentrumsferne Stegstruktur 06 ausbilden. Es ist zu erkennen, dass die Stege 04.2 der zentrumsnahen Stegstruktur 05 an den Enden die Gitterebene EG durchdringende und Aufweitungen 07 aufweisen, die die Stabilität der aneinander angrenzenden Stege verbessern. Ebenfalls ist zu erkennen, dass die Stege 04.1 der ersten Gruppe, die der zentrumsfernen Stegstruktur 06 zugeordnet sind, in Richtung senkrecht auf der Gitterebene EG eine abschnittsweise verringerte Breite B aufweisen, insbesondere in Endbereichen der Stege 04.3, die mittig im Mischelement 02 angeordnet sind.On the one hand, it can be seen that the webs 04.1 of the first group form a total of four rows, of which the two inner rows form the web structure 05 close to the center, the external webs forming the
Der
Ebenfalls kann zwischen dem mittleren Mischelement 02 und dem linken Mischelement 02 auch im Rahmen der Darstellung der
Im mittleren Mischelement 02 ist zudem zu erkennen, dass die Stege 04.4 der zweiten Gruppe von Stegen, nämlich die Stege, welche senkrecht zur Flügelebene EF verlaufen, im Bereich der zentrumsnahen Stegstruktur 05 in die Stege 04.1, 04.2 der Gitterebene übergehen oder miteinander verbunden sind.In the
In der perspektivischen Darstellung der
Anhand der Darstellung der
In der Darstellung der
In der Darstellung der
In der Darstellung der
In der
Dass die besagte Verbindung oder der besagte Übergang, wie er in der
Der Vollständigkeit halber wird in
In den Ausführungsformen der
- 0101
- MischereinsatzMixer insert
- 0202
- MischelementeMixing elements
- 0303
- SteganordnungBar arrangement
- 0404
- StegeBridges
- 04.104.1
- Stege der ersten GruppeFirst group piers
- 04.204.2
- Stege der zentrumsnahen SteganordnungBars of the bar arrangement close to the center
- 04.304.3
- Stege der zentrumsfernen StegstrukturBars of the bar structure remote from the center
- 04.404.4
- Stege der zweiten GruppeThe second group of bridges
- 0505
- zentrumsnahe Stegstrukturbar structure close to the center
- 0606
- zentrumsferne Stegstrukturdistant web structure
- 0707
- AufweitungenWidenings
- BB.
- Breitewidth
- EF E F
- FlügelebeneWing plane
- EG E G
- GitterebeneLattice plane
- GG
- GrenzenLimits
- HH
- Höheheight
- LL.
- LängsmittelachseLongitudinal central axis
- OO
- gekrümmte Oberflächecurved surface
Claims (14)
dadurch gekennzeichnet,
dass der gesamte Mischereinsatz (01) als einteiliges, bevorzugt spritzgegossenes, Bauteil, insbesondere Kunststoffbauteil, ausgebildet ist.Mixer insert for a static mixer comprising a plurality of mixing elements (02), which are arranged one behind the other, preferably directly adjacent to one another, along a central longitudinal axis (L), the mixing elements (02) being a bar arrangement with a plurality of intersecting and / or adjoining one another Having webs (04.1, 04.2, 04.3, 04.4), at least two mixing elements arranged along the longitudinal center axis (L), preferably directly one behind the other, having a preferably otherwise identical web arrangement rotated by an angle of rotation, preferably 90 °, relative to one another,
characterized,
that the entire mixer insert (01) is designed as a one-piece, preferably injection-molded, component, in particular a plastic component.
gekennzeichnet durch
eine erste Gruppe von Stegen (04.1) der Steganordnung deren Längserstreckung parallel zu einer Gitterebene (EG) verläuft, die eine Längsmittelachse (L) des Mischereinsaztzes (01) umfasst.Mixer insert according to claim 1,
marked by
a first group of webs (04.1) of the web arrangement, the longitudinal extent of which runs parallel to a grid plane (E G ) which comprises a central longitudinal axis (L) of the mixer insert (01).
dadurch gekennzeichnet,
dass die erste Gruppe von Stegen (04.1) eine zentrumsnahe Stegstruktur (05) umfasst, welche Stege (04.2) auf beiden Seiten der Gitterebne (EG) aufweist, wobei bevorzugt die Stege (04.2) die Form einer liegenden Acht oder zweier nebeneinander angeordneter Rauten oder Parallelogramme entlang der Längsmittelachse (L) ausbilden, und wobei weiter bevorzugt aneinander angrenzende Stege (04.2) jeweils auf unterschiedlichen Seiten der Gitterebene (EG) angeordnet sind.Mixer insert according to claim 2,
characterized,
that the first group of webs (04.1) comprises a web structure (05) close to the center, which webs (04.2) has on both sides of the lattice plane (E G ), the webs (04.2) preferably having the shape a lying figure of eight or two diamonds or parallelograms arranged next to one another along the longitudinal center axis (L), and further preferably adjacent webs (04.2) being arranged on different sides of the lattice plane (E G ).
dadurch gekennzeichnet,
dass die Stege (04.2) der zentrumsnahen Stegstruktur (05) an einem oder an beiden Enden die Gitterebene (EG) durchdringende Aufweitungen (07) aufweisen, um eine bessere Stabilität der aneinander angrenzenden Stege (04.2) der zentrumsnahen Stegstruktur (05) zu erreichen.Mixer insert according to claim 3,
characterized,
that the webs (04.2) of the near-center ridge structure (05) having at one or both ends of the lattice plane (E G) penetrating widenings (07) to provide a better stability of the adjacent webs (04.2) to reach the near-center ridge structure (05) .
dadurch gekennzeichnet,
dass die erste Gruppe von Stegen (04.1) eine zentrumsferne Stegstruktur (06) umfasst, welche Stege (04.3) auf beiden Seiten der Gitterebne (EG) aufweist, wobei bevorzugt die Stege (04.3) die Form eines Kreuzes und einer konzentrisch zum Kreuz angeordneten Raute oder Rechteck ausbilden, wobei weiter bevorzugt auf jeder Seite der Gitterebene (EG) drei Stege (04.3) angeordnet sind, die jeweils parallel zueinander verlaufen.Mixer insert according to one of Claims 2 to 4,
characterized,
that the first group of webs (04.1) comprises a web structure (06) remote from the center, which webs (04.3) has on both sides of the lattice level (E G ), the webs (04.3) preferably in the form of a cross and one arranged concentrically to the cross Form a rhombus or rectangle, further preferably three webs (04.3) are arranged on each side of the lattice plane (E G ), each of which runs parallel to one another.
dadurch gekennzeichnet,
dass die das Kreuz ausbildenden Stege (04.3) der zentrumsfernen Stegstruktur (06) an den Übergängen der Mischerelemente (02) miteinander verbunden sind und/oder ineinander übergehen.Mixer insert according to claim 5,
characterized,
that the webs (04.3) forming the cross of the web structure (06) remote from the center are connected to one another at the transitions of the mixer elements (02) and / or merge into one another.
dadurch gekennzeichnet,
dass die die Raute oder das Rechteck ausbildenden Stege (04.3) der zentrumsfernen Stegstruktur (06) der Gitterebne (EG) in der Richtung senkrecht auf der Gitterebene (EG) eine abschnittsweise verringerte Breite (B), insbesondere in Endbereichen, die mittig im Mischelement (02) angeordnet sind, aufweisen.Mixer insert according to claim 5 or 6,
characterized,
that the rhombus or rectangle forming webs (04.3) of the center-remote web structure (06) of the lattice plane (E G ) in the direction perpendicular to the lattice plane (E G ) a partially reduced width (B), in particular in end areas that are centered in Mixing element (02) are arranged, have.
gekennzeichnet durch
eine zweite Gruppe von Stegen (04.4) der Steganordnung deren Längserstreckung senkrecht zu einer Flügelebene (EF) verläuft, die eine Längsmittelachse (L) des Mischereinsaztzes (01) umfasst und senkrecht zur Gitterebene (EG) angeordnet ist.Mixer insert according to one of Claims 1 to 7,
marked by
a second group of webs (04.4) of the web arrangement, the longitudinal extent of which runs perpendicular to a wing plane (E F ), which comprises a central longitudinal axis (L) of the mixer insert (01) and is arranged perpendicular to the lattice plane (E G ).
dadurch gekennzeichnet,
dass die zweite Gruppe von Stegen (04.4) eine in Längsrichtung (L) des Mischelements (02) endseitig und/oder eine mittig angeordnete Stegstruktur aufweist, welche bevorzugt Stege (04.4) auf beiden Seiten der Flügelebene (EG) aufweist, wobei weiter bevorzugt die Stegstruktur die Form eines Dachs oder Winkels ausbilden.Mixer insert according to claim 8,
characterized,
that the second group of webs (04.4) has a web structure arranged in the longitudinal direction (L) of the mixing element (02) at the end and / or a centrally arranged web structure, which preferably has webs (04.4) on both sides of the wing plane (E G ), further preferred the web structure form the shape of a roof or an angle.
dadurch gekennzeichnet,
dass die die Raute oder das Rechteck ausbildenden Stege (04.3) der zentrumsfernen Stegstruktur (06) der Gitterebne (EG) an den Übergängen (G) der Mischelemente (02) mit den endseitig angeordneten Stege (04.4) der Flügelebene (EF) verbunden sind und/oder in diese übergehen.Mixer insert according to one of claims 5 to 9,
characterized,
that the rhombus or rectangle forming webs (04.3) of the center-remote web structure (06) of the lattice level (E G ) connected at the transitions (G) of the mixing elements (02) with the ends arranged webs (04.4) of the wing plane (E F ) are and / or merge into them.
dadurch gekennzeichnet,
dass die Stege (04.4) der in Längsrichtung (L) des Mischelements (01) mittig angeordneten Stegstruktur der Flügelebene mit den Stegen (04.2) der zentrumsnahen Stegstruktur der Gitterebne (EG) verbunden sind und/oder in diese übergehen.Mixer insert according to claim 9 or 10,
characterized,
that the webs (04.4) of the web structure of the wing plane arranged centrally in the longitudinal direction (L) of the mixing element (01) are connected to the webs (04.2) of the web structure of the lattice plane (E G ) close to the center and / or merge into this.
dadurch gekennzeichnet,
dass die Stege (04.3) der zentrumsfernen Stegstruktur (06) und die Stege (04.4) der Flügelebene (EF) an den äußeren, von der Längsmittelachse (L) abgewandten Enden eine gekrümmte Oberfläche (O) aufweisen, wobei die Krümmungen so gewählt werden, dass entlang der Längsmittelachse (L) ein ovaler, bevorzugt elliptischer, besonders bevorzugt kreisrunder, Querschnitt des Mischereinsatzes (01) gebildet wird.Mixer insert according to one of claims 5 to 11,
characterized,
that the webs (04.3) of the web structure (06) remote from the center and the webs (04.4) of the wing plane (E F ) have a curved surface (O) at the outer ends facing away from the longitudinal center axis (L), the curvatures being selected in this way that an oval, preferably elliptical, particularly preferably circular, cross section of the mixer insert (01) is formed along the longitudinal center axis (L).
gekennzeichnet durch
einen in der Mischhülse aufgenommenen Mischereinsatz (01) nach einem der Ansprüche 1 bis 12.Static mixer for mixing, in particular dental, multi-component material systems, comprising a mixing sleeve, in particular with connection means arranged at one end for connecting to an output device of the multi-component material system and output means arranged at the other end, preferably a discharge nozzle or discharge opening,
marked by
a mixer insert (01) according to one of claims 1 to 12 received in the mixing sleeve.
dadurch gekennzeichnet,
dass der Mischereinsatz (01) mit einem einzigen Spritzgussverfahren, insbesondere in einem Kunststoff-Spritzgussverfahren, bevorzugt mit einem Backenwerkzeug mit zwei senkrecht zur Hauptausformrichtung angeordneten Schiebern, hergestellt wird.Method for producing a mixer insert according to one of Claims 1 to 12,
characterized,
that the mixer insert (01) with a single injection molding process, in particular in a plastic injection molding process, is preferably produced with a jaw tool with two slides arranged perpendicular to the main shaping direction.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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EP19195331.4A EP3789107A1 (en) | 2019-09-04 | 2019-09-04 | Mixer insert, static mixer and production method |
PCT/EP2020/074727 WO2021043960A1 (en) | 2019-09-04 | 2020-09-04 | Mixer insert, static mixer and production method |
EP20764675.3A EP4003581A1 (en) | 2019-09-04 | 2020-09-04 | Mixer insert, static mixer and production method |
US17/640,264 US20220331757A1 (en) | 2019-09-04 | 2020-09-04 | Mixer insert, static mixer and production method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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EP19195331.4A EP3789107A1 (en) | 2019-09-04 | 2019-09-04 | Mixer insert, static mixer and production method |
Publications (1)
Publication Number | Publication Date |
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EP3789107A1 true EP3789107A1 (en) | 2021-03-10 |
Family
ID=67851016
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EP19195331.4A Withdrawn EP3789107A1 (en) | 2019-09-04 | 2019-09-04 | Mixer insert, static mixer and production method |
EP20764675.3A Pending EP4003581A1 (en) | 2019-09-04 | 2020-09-04 | Mixer insert, static mixer and production method |
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EP20764675.3A Pending EP4003581A1 (en) | 2019-09-04 | 2020-09-04 | Mixer insert, static mixer and production method |
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2019
- 2019-09-04 EP EP19195331.4A patent/EP3789107A1/en not_active Withdrawn
-
2020
- 2020-09-04 WO PCT/EP2020/074727 patent/WO2021043960A1/en unknown
- 2020-09-04 EP EP20764675.3A patent/EP4003581A1/en active Pending
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DE102013213467A1 (en) * | 2012-07-11 | 2014-05-22 | Promix Solutions Ag | Static mixing device for flowable media |
CN102773937A (en) * | 2012-07-27 | 2012-11-14 | 武汉新中德塑料机械有限公司 | Static mixer used for blown film die head |
WO2017097860A1 (en) | 2015-12-08 | 2017-06-15 | Stamixco Ag | Mixer insert, static mixer and production method |
EP3495036A1 (en) * | 2017-12-05 | 2019-06-12 | Stamixco AG | Mixer insert for static mixer, static mixer and method of manufacturing |
Also Published As
Publication number | Publication date |
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US20220331757A1 (en) | 2022-10-20 |
WO2021043960A1 (en) | 2021-03-11 |
EP4003581A1 (en) | 2022-06-01 |
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