EP0664153A1 - Mixer - Google Patents

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Publication number
EP0664153A1
EP0664153A1 EP94810031A EP94810031A EP0664153A1 EP 0664153 A1 EP0664153 A1 EP 0664153A1 EP 94810031 A EP94810031 A EP 94810031A EP 94810031 A EP94810031 A EP 94810031A EP 0664153 A1 EP0664153 A1 EP 0664153A1
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EP
European Patent Office
Prior art keywords
mixer
component
discharge
cartridge
smaller
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Granted
Application number
EP94810031A
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German (de)
French (fr)
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EP0664153B1 (en
Inventor
Wilhelm A. Keller
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Individual
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Individual
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Priority to EP94810031A priority Critical patent/EP0664153B1/en
Priority to DE59407962T priority patent/DE59407962D1/en
Priority to US08/372,916 priority patent/US5498078A/en
Priority to JP00536895A priority patent/JP3591899B2/en
Publication of EP0664153A1 publication Critical patent/EP0664153A1/en
Application granted granted Critical
Publication of EP0664153B1 publication Critical patent/EP0664153B1/en
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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
    • B01F25/4314—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor with helical baffles
    • B01F25/43141—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor with helical baffles composed of consecutive sections of helical formed elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00553—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with means allowing the stock of material to consist of at least two different components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/2305—Mixers of the two-component package type, i.e. where at least two components are separately stored, and are mixed in the moment of application
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/50—Movable or transportable mixing devices or plants
    • B01F33/501—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use
    • B01F33/5011—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use portable during use, e.g. hand-held
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00553—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with means allowing the stock of material to consist of at least two different components
    • B05C17/00556—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with means allowing the stock of material to consist of at least two different components with means for adjusting the proportions of the components

Definitions

  • the present invention relates to a mixer for double discharge cartridges according to the preamble of claim 1.
  • Such mixers are previously known, for example from EP-B-121 342, and have the task of intimately affecting the two components which are discharged from the discharge cartridges mix so that they can be prepared in this way.
  • the two storage cylinders of the discharge cartridge have approximately the same volume and also have approximately the same discharge openings, mixing the two components no longer poses any major problems from the start.
  • the storage cylinders have significantly different volumes - which is synonymous with different cross-sections, since the storage cylinders have the same length due to manufacturing and operating reasons - and have outlet openings, for example in a ratio of 10: 1, there is a risk that the component will consist of the larger one Storage cylinder fills the mixing coil group of the mixer at the start of the discharge and thus suppresses or overwhelms the second component with a smaller volume.
  • the larger partial flow "A” presses the smaller partial flow "B” against the B-side wall of the mixing tube, where it remains due to the wall friction and is therefore overwhelmed or suppressed by the larger A component and therefore only becomes after a while can prevail as a current.
  • the partial flow A leads and there can be no mixing in the intended proportions, which means that the components cannot or only partially react with one another and this leads to faulty connections, seals, impressions, etc. during processing .
  • the second component is generally the hardener (catalyst) and a component mixture with too little hardener cannot be used, it is customary to stabilize the partial flows in the desired proportioning, first to squeeze a certain amount uselessly before starting the actual application the mixture can be started. Apart from the loss of component mass, these discharged substances cannot harden and lead to problems in disposal.
  • a discharge device is known from EP-A-472 448, in which the outlets of the discharge device or the cartridge housing are arranged such that the larger component flows around the smaller component and takes it with it.
  • the device is designed to work with or without a mixer. If no mixer is used, the two components already come together in the cartridge or in the discharge device and hardened mass means that after the cartridge has been replaced, the outlet area must be cleaned before work can continue. If a mixer is used, curing takes place there and after the mixer has been replaced, the cartridge or the dispensing device can be cleaned without cleaning the outlet area.
  • a mixer that solves this problem is described in claim 1.
  • the components reach the first coil of the mixer arbitrarily, the mixer coil group being designed in such a way that the two components mix well along the mixer up to the discharge end.
  • the mixer coil group being designed in such a way that the two components mix well along the mixer up to the discharge end.
  • Cross-sectional ratios of the supply cylinders to the Mass with the larger volume suppresses or overwhelms the mass with the smaller volume, particularly in the initial phase, ie when filling the mixing tube, so that no prescribed mixing ratio can occur.
  • the mixing ratio of the partial flows stabilizes to a predetermined value.
  • Figures 1 and 1a show a perspective view of the input part 2 and the upper part of the mixing coil group 1, and Figure 3 shows the input of the mixer housing 3.
  • the input part 2 fitting into the mixer housing 3 has an alignment and guide bar 6, which in one corresponding guide groove 7 in the mixer housing 3 fits and also leads the partial stream B.
  • the input part can either have two alignment parts 4 and 5, as shown in FIG. 1, which cooperate with the outlet of the cartridge or discharge device, or the mixer housing can have a cutout 25, which is fitted with a corresponding cam the cartridge or on the discharge device interacts.
  • the smaller component B enters the channel 11 from the cartridge outlet or discharge device, while the larger component A takes up the rest of the available volume of the input part.
  • the design and position of the channel have the effect that component A completely envelops component B at the beginning of first coil 9.
  • the roof-shaped web 10, at which the first coil begins is arranged exactly in the middle of the channel 11 for the smaller component B and this divides the partial flow A and partial flow B in half.
  • the cover flange 8 corresponds to the inside width of the mixer tube 13 and can optionally have a sealing bead. Below the cover flange, on the entrance the A component diametrically opposite side, an oblique guide surface 12 is arranged, which prevents the accumulation of any air or gas and thus ensures good ventilation and the avoidance of air bubbles enclosed in the mass.
  • FIG. 3-6 shows a second embodiment variant, in which the channel for the smaller component B is completely enclosed. Since this is also a mixer for a double cartridge with storage cylinders next to each other, the outlet of B at the cartridge and the inlet at the mixer for the smaller component B are not in the middle, but on the side. For an optimal encasing of component B by component A, it is particularly advantageous to guide component B into the center of the mixer tube.
  • Fig. 3 you can see in a perspective view the input part 14 with the subsequent mixing coil group 15.
  • the input part is closed on the B side with a cover flange 16 which has an opening 17 for the smaller component B, while the larger component A next to the Cover flange 16 flows into the input part.
  • the cartridge outlet 22 is pressed against the cover flange 16 in a sealing manner.
  • the wall 18 is arranged perpendicular to the cover flange 16 and serves to center and stabilize the input part in the mixer housing.
  • an oblique guide surface 12 is arranged below the cover flange 16 and on the side diametrically opposite the entry of the A component, in order to achieve good ventilation.
  • channel 19 for the smaller partial stream B is closed on all sides.
  • Channel 19, see also FIG. 4, is arranged obliquely with respect to the longitudinal axis of the mixer and opens into the middle of the mixer tube.
  • the roof-shaped web 20 of the first helix 21, which divides the partial flow B into two halves, is located at the channel exit in order to create a good prerequisite for correct mixing.
  • the first mixer element does not have to have a web 10 or 20 and this does not have to be roof-shaped.
  • the mixer housing 3B represents a variant of the mixer housing of FIG. 2 and can be fastened to the cartridge housing or to the discharge device via a bayonet connection and has a guide groove 7B, see FIG. 5, into which the on the A side lying wall 18 fits.
  • the bayonet flange has a recess 26 which serves to align the mixer on the cartridge or on the dispenser.
  • FIG. 4 shows a cut-away representation of the mixer housing 3B, in which the outlet 22 with the two outlets 23 and 24 of the double cartridge or of the discharge device is shown. In the two sections of FIGS. 5 and 6 it can be seen that the channel 19 is guided into the center of the mixer tube 13B.
  • the mixer according to the invention ensures an efficient and optimal mixing process. With this arrangement, possible slight phase shifts or pulsations between components A and B, caused by various influences such as. B. different elasticity of the two cartridge cylinders, largely compensated for by the improved compensation or backmixing effect of the static mixer. Of course, care must be taken that the cross-sections of the partial flows are proportioned in such a way that it is ensured that both partial flows reach the first coil at the same time.

Abstract

Mixer for double discharge cartridges or discharge devices with at least two storage cylinders, whole vol. ratio differs from 1:1, has a mixer casing which can be fixed to the cartridge or discharge device and a gp. of mixing coils inside it, both discharge openings which lie next to one another are in contact with the cartridge or discharge device. An entrance chamber (2,14) before the gp. of coils (1,15) comprises a bigger entrance chamber for the first component (A) of larger discharge vol. and a small entrance chamber (11,19) for the second component (B) of smaller discharge vol., the smaller chamber is so designed that upon exiting the input chamber, the first component (A) encloses the second (B) and the first inlet edge (10.20) of the first coil (9,21) splits both the first (A) and second (B) components in half.

Description

Die vorliegende Erfindung bezieht sich auf einen Mischer für Doppelaustragkartuschen gemäss dem Oberbegriff von Patentanspruch 1. Solche Mischer sind vorbekannt, beispielsweise aus der EP-B-121 342, und haben die Aufgabe, die beiden Komponenten, die aus den Austragkartuschen ausgetragen werden, innig zu mischen, um sie derart aufbereitet auftragen zu können.The present invention relates to a mixer for double discharge cartridges according to the preamble of claim 1. Such mixers are previously known, for example from EP-B-121 342, and have the task of intimately affecting the two components which are discharged from the discharge cartridges mix so that they can be prepared in this way.

Falls die beiden Vorratszylinder der Austragkartusche ungefähr das gleiche Volumen aufweisen und auch ungefähr die gleichen Austragöffnungen besitzen, stellt das Vermischen der beiden Komponenten von Anfang an keine grossen Probleme mehr. Falls jedoch die Vorratszylinder wesentlich verschiedene Volumina - was gleichbedeutend mit verschiedenen Querschnitten ist, da die Vorratszylinder herstellungs- und betriebsbedingt die gleiche Länge besitzen - und Austrittöffnungen aufweisen, beispielsweise in einem Verhältnis von 10:1, besteht die Gefahr, dass die Komponente aus dem grösseren Vorratszylinder beim Beginn des Austragens die Mischwendelgruppe des Mischers auffüllt und somit die zweite Komponente mit geringerem Volumen unterdrückt, bzw. überwältigt wird. Insbesondere drückt im Eingangsbereich der grössere Teilstrom "A" den kleineren Teilstrom "B" an die B-seitige Wandung des Mischrohrs, wo dieser, infolge der Wandreibung zurückbleibt und daher von der grösseren A-Komponente überwältigt, bzw. unterdrückt wird und sich daher erst nach einiger Zeit als Strömung durchsetzen kann. Während dieser Anfangsphase eilt der Teilstrom A vor und es kann keine Vermischung in den vorgesehenen Proportionen erfolgen, was dazu führt, dass die Komponenten nicht oder nur teilweise miteinander reagieren können und es dadurch bei der Verarbeitung zu fehlerhaften Verbindungen, Dichtungen, Abdrücken, etc. kommt.If the two storage cylinders of the discharge cartridge have approximately the same volume and also have approximately the same discharge openings, mixing the two components no longer poses any major problems from the start. However, if the storage cylinders have significantly different volumes - which is synonymous with different cross-sections, since the storage cylinders have the same length due to manufacturing and operating reasons - and have outlet openings, for example in a ratio of 10: 1, there is a risk that the component will consist of the larger one Storage cylinder fills the mixing coil group of the mixer at the start of the discharge and thus suppresses or overwhelms the second component with a smaller volume. In particular, in the entrance area the larger partial flow "A" presses the smaller partial flow "B" against the B-side wall of the mixing tube, where it remains due to the wall friction and is therefore overwhelmed or suppressed by the larger A component and therefore only becomes after a while can prevail as a current. During this initial phase, the partial flow A leads and there can be no mixing in the intended proportions, which means that the components cannot or only partially react with one another and this leads to faulty connections, seals, impressions, etc. during processing .

Da es sich im allgemeinen bei der zweiten Komponente um den Härter (Katalysator) handelt und eine Komponentenmischung mit zuwenig Härter nicht brauchbar ist, ist es zur Stabilisierung der Teilströme in der gewünschten Proportionierung üblich, zuerst eine gewisse Menge nutzlos auszupressen, bevor mit dem eigentlichen Auftragen der Mischung begonnen werden kann. Abgesehen vom Verlust an Komponentenmasse können diese ausgetragenen Substanzen nicht aushärten und zu Problemen bei der Entsorgung führen.Since the second component is generally the hardener (catalyst) and a component mixture with too little hardener cannot be used, it is customary to stabilize the partial flows in the desired proportioning, first to squeeze a certain amount uselessly before starting the actual application the mixture can be started. Apart from the loss of component mass, these discharged substances cannot harden and lead to problems in disposal.

In der europäischen Patentanmeldung Nr. 92810645.9 wird eine Lösung dieses Problems dadurch vorgeschlagen, dass die erste, grössere Komponente anfänglich in einer Kammer aufgestaut wird und Mittel vorhanden sind, um diese erste Komponente in die Eingangskammer der zweiten Komponente zu leiten und diese mitzuführen. Obwohl diese Ausführung eine Verbesserung gegenüber dem damals bekannten Stand der Technik brachte, bedingt diese Lösung einen grösseren Fliesswiderstand infolge mehrerer erforderlichen Querschnittsverkleinerungen. Dieser erhöhte Fliesswiderstand kann eine Verstärkung der Kartuschenwände erforderlich machen und benötigt höhere Kräfte beim Austragen.In European patent application No. 92810645.9 a solution to this problem is proposed in that the first, larger component is initially dammed up in a chamber and means are available for guiding this first component into the entry chamber of the second component and carrying it along. Although this design brought an improvement over the prior art known at the time, this solution requires greater flow resistance as a result of several cross-sectional reductions required. This increased flow resistance can make it necessary to reinforce the cartridge walls and requires higher forces when discharging.

Ausserdem ist aus der EP-A-472 448 ein Austraggerät bekannt, bei dem die Auslässe des Austraggeräts, bzw. des Kartuschengehäuses derart angeordnet sind, dass die grössere Komponente die kleinere umfliesst und mitnimmt. Das Gerät ist gedacht, mit oder ohne Mischer zu arbeiten. Falls kein Mischer verwendet wird, kommen die beiden Komponenten bereits in der Kartusche oder im Austraggerät zusammen und ausgehärtete Masse führt dazu, dass nach dem Auswechseln der Kartusche der Auslassbereich gereinigt werden muss, bevor weiter gearbeitet werden kann. Bei der Verwendung eines Mischers erfolgt die Aushärtung dort und nach Auswechseln des Mischers kann ohne Reinigung des Auslassbereiches der Kartusche, bzw. des Austraggeräts weitergearbeitet werden.Furthermore, a discharge device is known from EP-A-472 448, in which the outlets of the discharge device or the cartridge housing are arranged such that the larger component flows around the smaller component and takes it with it. The device is designed to work with or without a mixer. If no mixer is used, the two components already come together in the cartridge or in the discharge device and hardened mass means that after the cartridge has been replaced, the outlet area must be cleaned before work can continue. If a mixer is used, curing takes place there and after the mixer has been replaced, the cartridge or the dispensing device can be cleaned without cleaning the outlet area.

Bei oben angegebenem Gerät werden jedoch keine Vorkehrungen für ein exaktes Mischverhältnis im Mischer getroffen.With the device specified above, however, no precautions are taken for an exact mixing ratio in the mixer.

Es ist davon ausgehend Aufgabe der vorliegenden Erfindung einen Mischer anzugeben, in dem die an der Kartusche nebeneinander austretenden Komponenten im Eingangsteil so geführt werden, dass die beiden Komponenten das erste Mischerelement derart anströmen, dass eine gute Vermischung von Anfang an gewährleistet ist, und vor der ersten Mischwendelgruppe kein erhöhter Fliesswiderstand erzeugt wird. Ein Mischer, der diese Aufgabe löst, ist in Anspruch 1 beschrieben.It is based on the object of the present invention to provide a mixer in which the components emerging from the cartridge next to one another are guided in the input part such that the two components flow against the first mixer element in such a way that good mixing is ensured from the start, and before no increased flow resistance is generated in the first mixing coil group. A mixer that solves this problem is described in claim 1.

Die Erfindung wird im folgenden anhand einer Zeichnung von Ausführungsbeispielen näher erläutert:

  • Die Fig. 1, 1a und 2 zeigen in perspektivischer Sicht ein erstes Ausführungsbeispiel der Erfindung,
  • die Fig. 3 und 4 zeigen in perspektivischer Sicht ein zweites Ausführungsbeispiel der Erfindung, wobei Fig. 4 teilweise längs geschnitten ist,
  • Fig. 5 zeigt einen Schnitt gemäss der Linie V-V in Fig. 4, und
  • Fig. 6 zeigt einen Schnitt gemäss der Linie VI-VI in Fig. 4.
The invention is explained in more detail below with reference to a drawing of exemplary embodiments:
  • 1, 1a and 2 show a perspective view of a first embodiment of the invention,
  • 3 and 4 show a perspective view of a second embodiment of the invention, wherein FIG. 4 is partially cut longitudinally,
  • Fig. 5 shows a section along the line VV in Fig. 4, and
  • FIG. 6 shows a section along the line VI-VI in FIG. 4.

Bei vorbekannten Mischern gelangen die Komponenten willkürlich zur ersten Wendel des Mischers, wobei die Mischwendelgruppe derart konstruiert ist, dass sich die beiden Komponenten längs des Mischers bis zum Austragende gut vermischen. Wie eingangs erwähnt, kommt es bei vorbekannten Mischern bei unterschiedlichen Volumenverhältnissen, resp. Querschnittverhältnissen der Vorratszylinder dazu, dass die Masse mit dem grösseren Volumen die Masse mit dem kleineren Volumen, insbesondere in der Anfangsphase, d.h. beim Auffüllen des Mischrohres, unterdrückt, bzw. überwältigt, so dass kein vorgeschriebenes Mischverhältnis entstehen kann. Nach einer gewissen Zeit, d.h. wenn der Mischer vollständig gefüllt worden ist und eine bestimmte Menge ausgetragen wurde, stabilisiert sich das Mischverhältnis der Teilströme auf einen vorbestimmten Wert.In the case of previously known mixers, the components reach the first coil of the mixer arbitrarily, the mixer coil group being designed in such a way that the two components mix well along the mixer up to the discharge end. As mentioned at the beginning, it comes with known mixers with different volume ratios, respectively. Cross-sectional ratios of the supply cylinders to the Mass with the larger volume suppresses or overwhelms the mass with the smaller volume, particularly in the initial phase, ie when filling the mixing tube, so that no prescribed mixing ratio can occur. After a certain time, ie when the mixer has been completely filled and a certain amount has been discharged, the mixing ratio of the partial flows stabilizes to a predetermined value.

Die Figuren 1 und 1a zeigen in perspektivischer Ansicht den Eingangsteil 2 und den oberen Teil der Mischwendelgruppe 1, und Figur 3 zeigt den Eingang des Mischergehäuses 3. Das in das Mischergehäuse 3 passende Eingangsteil 2 weist einen Ausricht- und Leitsteg 6 auf, der in eine entsprechende Führungsnut 7 im Mischergehäuse 3 passt und ausserdem den Teilstrom B führt. Zum Ausrichten des Mischers an der Kartusche oder am Austraggerät kann entweder wie in Figur 1 eingezeichnet das Eingangsteil zwei Ausrichtteile 4 und 5 aufweisen, die mit dem Ausgang der Kartusche oder Austraggerät zusammenwirken oder das Mischergehäuse kann einen Ausschnitt 25 aufweisen, der mit einem entsprechenden Nokken an der Kartusche oder am Austraggerät zusammenwirkt.Figures 1 and 1a show a perspective view of the input part 2 and the upper part of the mixing coil group 1, and Figure 3 shows the input of the mixer housing 3. The input part 2 fitting into the mixer housing 3 has an alignment and guide bar 6, which in one corresponding guide groove 7 in the mixer housing 3 fits and also leads the partial stream B. To align the mixer on the cartridge or on the discharge device, the input part can either have two alignment parts 4 and 5, as shown in FIG. 1, which cooperate with the outlet of the cartridge or discharge device, or the mixer housing can have a cutout 25, which is fitted with a corresponding cam the cartridge or on the discharge device interacts.

Die kleinere Komponente B gelangt vom Kartuschenausgang, bzw. Austraggerät in den Kanal 11, während die grössere Komponente A den Rest des zur Verfügung stehenden Volumen des Eingangsteils einnimmt. Die Ausbildung und Lage des Kanals bewirkt, dass die Komponente A bei Beginn der ersten Wendel 9 die Komponente B ganz umhüllt. Aus Fig. 1a ist ferner ersichtlich, dass der dachkantförmige Steg 10, bei dem die erste Wendel beginnt, genau in der Mitte des Kanals 11 für die kleinere Komponente B angeordnet ist und dieser den Teilstrom A sowie Teilstrom B hälftig aufteilt. Der Deckflansch 8 entspricht der lichten Weite des Mischerrohres 13 und kann gegebenenfalls einen Dichtwulst aufweisen. Unterhalb des Deckflansches, auf der dem Eintritt der A-Komponente diametral entgegengesetzten Seite, ist eine schräge Leitfläche 12 angeordnet, die den Stau von eventuell vorhandener Luft oder Gas verhindert und somit eine gute Entlüftung und die Vermeidung von in der Masse eingeschlossenen Luftblasen gewährleistet.The smaller component B enters the channel 11 from the cartridge outlet or discharge device, while the larger component A takes up the rest of the available volume of the input part. The design and position of the channel have the effect that component A completely envelops component B at the beginning of first coil 9. From Fig. 1a it can also be seen that the roof-shaped web 10, at which the first coil begins, is arranged exactly in the middle of the channel 11 for the smaller component B and this divides the partial flow A and partial flow B in half. The cover flange 8 corresponds to the inside width of the mixer tube 13 and can optionally have a sealing bead. Below the cover flange, on the entrance the A component diametrically opposite side, an oblique guide surface 12 is arranged, which prevents the accumulation of any air or gas and thus ensures good ventilation and the avoidance of air bubbles enclosed in the mass.

Durch das exakte Ausrichten beider Teilströme auf den Steg 10 der ersten Wendel 9, wobei sich der Steg auch hinter der Abschlusswand 11a des Kanals 11 erstreckt, sowie das Umhüllen der Komponente B durch die Komponente A wird ein exaktes Mischverhältnis von der ersten Wendel an und somit eine optimale Durchmischung beider Komponenten gewährleistet sowie eine Unterdrückung der Komponente B vermieden. Ausserdem wird darauf geachtet, dass die Querschnitte der beiden Teilströmungen im Bereich zwischen dem Deckflansch und dem Steg etwa dem Mischverhältnis entsprechen.Due to the exact alignment of both partial flows on the web 10 of the first coil 9, the web also extending behind the end wall 11a of the channel 11, and the encasing of component B by component A, an exact mixing ratio from the first coil and thus ensures optimal mixing of both components and prevents suppression of component B. In addition, care is taken to ensure that the cross sections of the two partial flows in the area between the cover flange and the web approximately correspond to the mixing ratio.

In den Fig. 3-6 ist eine zweite Ausführungsvariante dargestellt, bei welcher der Kanal für die kleinere Komponente B vollständig umschlossen ist. Da es sich auch hier um einen Mischer für eine Doppelkartusche mit nebeneinanderliegenden Vorratszylindern handelt, liegt der Austritt von B an der Kartusche und der Eingang am Mischer für die kleinere Komponente B nicht in der Mitte, sondern seitlich. Für eine optimale Umhüllung der Komponente B durch die Komponente A ist es besonders vorteilhaft, die Komponente B in die Mitte des Mischerrohres zu leiten.3-6 shows a second embodiment variant, in which the channel for the smaller component B is completely enclosed. Since this is also a mixer for a double cartridge with storage cylinders next to each other, the outlet of B at the cartridge and the inlet at the mixer for the smaller component B are not in the middle, but on the side. For an optimal encasing of component B by component A, it is particularly advantageous to guide component B into the center of the mixer tube.

In Fig. 3 erkennt man in perspektivischer Sicht das Eingangsteil 14 mit der anschliessenden Mischwendelgruppe 15. Das Eingangsteil wird auf der B-Seite mit einem Deckflansch 16 abgeschlossen, der eine Oeffnung 17 für die kleinere Komponente B aufweist, während die grössere Komponente A neben dem Deckflansch 16 in das Eingangsteil strömt. Beim Anschluss des Mischers an die Kartusche wird der Kartuschenauslass 22 dichtend an den Deckflansch 16 gepresst.In Fig. 3 you can see in a perspective view the input part 14 with the subsequent mixing coil group 15. The input part is closed on the B side with a cover flange 16 which has an opening 17 for the smaller component B, while the larger component A next to the Cover flange 16 flows into the input part. When the mixer is connected to the cartridge, the cartridge outlet 22 is pressed against the cover flange 16 in a sealing manner.

Die Wand 18 ist senkrecht zum Deckflansch 16 angeordnet und dient zum Zentrieren und Stabilisieren des Eingangsteils im Mischergehäuse. Auch in dieser Ausführung ist unterhalb des Deckflansches 16 und auf der dem Eintritt der A-Komponente diametral entgegengesetzten Seite eine schräge Leitfläche 12 angeordnet, um eine gute Entlüftung zu erzielen.The wall 18 is arranged perpendicular to the cover flange 16 and serves to center and stabilize the input part in the mixer housing. In this embodiment too, an oblique guide surface 12 is arranged below the cover flange 16 and on the side diametrically opposite the entry of the A component, in order to achieve good ventilation.

Der Kanal 19 für den kleineren Teilstrom B ist im Unterschied zum Kanal 11 der vorhergehenden Ausführung allseitig geschlossen. Kanal 19 ist, siehe auch Fig. 4, in Bezug auf die Längsachse des Mischers schräg angeordnet und mündet in der Mitte des Mischerrohres. Anschliessend an den Kanalaustritt befindet sich der dachkantförmige Steg 20 der ersten Wendel 21, der den Teilstrom B in zwei Hälften teilt, um so eine gute Voraussetzung für eine richtige Durchmischung zu schaffen. Das erste Mischerelement muss nicht einen Steg 10 oder 20 besitzen und dieser muss nicht dachkantförmig sein.In contrast to channel 11 of the previous embodiment, channel 19 for the smaller partial stream B is closed on all sides. Channel 19, see also FIG. 4, is arranged obliquely with respect to the longitudinal axis of the mixer and opens into the middle of the mixer tube. The roof-shaped web 20 of the first helix 21, which divides the partial flow B into two halves, is located at the channel exit in order to create a good prerequisite for correct mixing. The first mixer element does not have to have a web 10 or 20 and this does not have to be roof-shaped.

Das Mischergehäuse 3B stellt eine Variante zum Mischergehäuse von Fig. 2 dar und ist an das Kartuschengehäuse, bzw. am Austraggerät, über einen Bajonett-Anschluss befestigbar und weist eine Führungsnut 7B auf, siehe Fig. 5, in die die auf der A-Seite liegende Wand 18 passt. Der Bajonettflanschrand weist eine Ausnehmung 26 auf, die der Ausrichtung des Mischers an der Kartusche oder am Austraggerät dient.The mixer housing 3B represents a variant of the mixer housing of FIG. 2 and can be fastened to the cartridge housing or to the discharge device via a bayonet connection and has a guide groove 7B, see FIG. 5, into which the on the A side lying wall 18 fits. The bayonet flange has a recess 26 which serves to align the mixer on the cartridge or on the dispenser.

In Fig. 4 ist eine aufgeschnittene Darstellung des Mischergehäuses 3B dargestellt, in der der Auslass 22 mit den beiden Ausgängen 23 und 24 der Doppelkartusche, bzw. des Austraggerätes eingezeichnet ist. In den beiden Schnitten der Fig. 5 und 6 erkennt man, dass der Kanal 19 in das Zentrum des Mischerrohres 13B geführt wird.FIG. 4 shows a cut-away representation of the mixer housing 3B, in which the outlet 22 with the two outlets 23 and 24 of the double cartridge or of the discharge device is shown. In the two sections of FIGS. 5 and 6 it can be seen that the channel 19 is guided into the center of the mixer tube 13B.

Aus obiger Beschreibung geht hervor, dass die Austragöffnungen der Austragkartusche oder des Austraggerätes mit den Eingangsöffnungen des Mischers übereinstimmen müssen und es notwendig ist Massnahmen vorzusehen, den Mischer in der richtigen Position daran aufzusetzen, insbesondere dann, wenn das Volumen- und Oeffnungsverhältnis beider Vorratszylinder verschieden von 1:1 ist, wie in vorliegender Anmeldung. Verschiedene weitere Massnahmen dazu sind in der eingangs erwähnten europäischen Patentanmeldung Nr. 92810645.9 beschrieben worden. Das Gleiche gilt für die Verwendung des vorliegenden erfindungsgemässen Mischers an einem Mischeranschluss an Dosier- und Proportionieranlagen.It can be seen from the above description that the discharge openings of the discharge cartridge or of the discharge device match the Input openings of the mixer must match and it is necessary to take measures to place the mixer on it in the correct position, especially if the volume and opening ratio of the two supply cylinders is different from 1: 1, as in the present application. Various other measures for this have been described in the aforementioned European patent application No. 92810645.9. The same applies to the use of the mixer according to the invention at a mixer connection on metering and proportioning systems.

Der erfindungsgemässe Mischer gewährleistet einen effizienten und optimalen Mischvorgang. Mit dieser Anordnung werden eventuell auftretende leichte Phasenverschiebungen oder Pulsationen zwischen den Komponenten A und B, verursacht durch verschiedene Einflüsse wie z. B. unterschiedliche Elastizität der beiden Kartuschenzylinder, infolge des hierdurch verbesserten Ausgleichs- oder Rückmischeffektes des statischen Mischers weitgehend ausgeglichen. Dabei ist selbstverständlich darauf zu achten, dass die Querschnitte der Teilströme derart proportioniert sind, dass gewährleistet ist, dass beide Teilströme gleichzeitig die erste Wendel erreichen.The mixer according to the invention ensures an efficient and optimal mixing process. With this arrangement, possible slight phase shifts or pulsations between components A and B, caused by various influences such as. B. different elasticity of the two cartridge cylinders, largely compensated for by the improved compensation or backmixing effect of the static mixer. Of course, care must be taken that the cross-sections of the partial flows are proportioned in such a way that it is ensured that both partial flows reach the first coil at the same time.

Claims (8)

Mischer für Doppelaustragkartuschen oder Austraggeräte mit mindestens zwei Vorratszylindern, deren Volumenverhältnis von 1:1 verschieden ist, mit einem Mischergehäuse, der an der Kartusche, bzw. Austraggerät, befestigbar ist und einer darin angeordneten Mischwendelgruppe, wobei die beiden seitlich nebeneinanderliegenden Austragöffnungen der Kartusche, bzw. des Austraggerätes mit dem Eingangsteil der Mischwendelgruppe in Verbindung stehen, dadurch gekennzeichnet, dass das Eingangsteil (2, 14) vor der Mischwendelgruppe (1, 15) in eine grössere Eingangskammer für die erste Komponente (A) mit dem grösseren Austragvolumen und eine kleinere Eingangskammer (11, 19) für die zweite Komponente (B) mit dem kleineren Austragvolumen unterteilt ist und die kleinere Eingangskammer derart angeordnet und ausgebildet ist, dass beim Austritt aus der Eingangskammer die erste Komponente (A) die zweite Komponente (B) umhüllt und die erste Eintrittskante (10, 20) der ersten Wendel (9, 21) sowohl die erste (A) als auch die zweite (B) Komponente hälftig teilt.Mixer for double discharge cartridges or discharge devices with at least two storage cylinders, the volume ratio of which differs from 1: 1, with a mixer housing that can be attached to the cartridge or discharge device and a mixing spiral group arranged therein, the two discharge openings of the cartridge, or . of the discharge device are connected to the input part of the mixing coil group, characterized in that the input part (2, 14) upstream of the mixing coil group (1, 15) into a larger input chamber for the first component (A) with the larger discharge volume and a smaller input chamber (11, 19) is divided for the second component (B) with the smaller discharge volume and the smaller input chamber is arranged and designed in such a way that the first component (A) envelops the second component (B) and the first when exiting the input chamber Leading edge (10, 20) of the first coil (9, 21) both divides the first (A) and the second (B) components in half. Mischer nach Anspruch 1, dadurch gekennzeichnet, dass die kleinere Eingangskammer als Kanal (11, 19) ausgebildet ist, der vor der ersten Wendel (9, 21) im Zentrum des Mischerrohres (13) mündet.Mixer according to claim 1, characterized in that the smaller inlet chamber is designed as a channel (11, 19) which opens in front of the first coil (9, 21) in the center of the mixer tube (13). Mischer nach Anspruch 2, dadurch gekennzeichnet, dass der Kanal (11) zur Seite der ersten Komponente (A) hin offen ist.Mixer according to claim 2, characterized in that the channel (11) to the side of the first component (A) is open. Mischer nach Anspruch 2, dadurch gekennzeichnet, dass der Kanal (19) als geschlossenes Rohr ausgebildet ist.Mixer according to claim 2, characterized in that the channel (19) is designed as a closed tube. Mischer nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Querschnitte, bzw. Volumina der Eingangskammern (11, 19) und damit der Teilströme (A, B) derart proportioniert sind, dass beide Teilströme gleichzeitig die erste Wendel (9, 21) erreichen.Mixer according to one of claims 1 to 4, characterized in that the cross sections, or volumes of the input chambers (11, 19) and thus the partial flows (A, B) are proportioned such that both partial flows reach the first coil (9, 21) at the same time. Mischer nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Eingangskammer (2, 14) auf der dem Eintritt diametral gegenüberliegenden Seite Mittel (12) aufweist, dass der grössere Teilstrom (A) keine Luftblasen einschliesst.Mixer according to one of claims 1 to 5, characterized in that the inlet chamber (2, 14) on the side diametrically opposite the inlet has means (12) that the larger partial stream (A) does not include any air bubbles. Mischer nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass das Eingangsteil (2, 14) und das Gehäuse (3, 3B) des Mischers Mittel (6, 7; 18, 7B) aufweisen, die einen gerichteten Einbau des Eingangsteils mit der Mischwendelgruppe (1, 15) in das Mischergehäuse ermöglichen.Mixer according to one of claims 1 to 6, characterized in that the input part (2, 14) and the housing (3, 3B) of the mixer have means (6, 7; 18, 7B) which allow for a directed installation of the input part with the Allow mixer coil group (1, 15) into the mixer housing. Mischer nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass er Mittel (4, 5; 25, 26) aufweist, die sein gerichtetes Befestigen an der Kartusche, bzw. am Austraggerät ermöglichen.Mixer according to one of claims 1 to 7, characterized in that it has means (4, 5; 25, 26) which enable it to be fixed in a directed manner to the cartridge or to the discharge device.
EP94810031A 1994-01-19 1994-01-19 Mixer Expired - Lifetime EP0664153B1 (en)

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EP94810031A EP0664153B1 (en) 1994-01-19 1994-01-19 Mixer
DE59407962T DE59407962D1 (en) 1994-01-19 1994-01-19 mixer
US08/372,916 US5498078A (en) 1994-01-19 1995-01-13 Mixer for double dispensing cartridges or dispensing appliances
JP00536895A JP3591899B2 (en) 1994-01-19 1995-01-18 Mixer for dual distribution cartridge

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US8608030B2 (en) 2010-05-04 2013-12-17 Heraeus Medical Gmbh Cartridge system with compressed gas cartridge
DE102010019217B4 (en) * 2010-05-04 2014-01-16 Heraeus Medical Gmbh cartridge system
US8986313B2 (en) 2011-11-25 2015-03-24 Heraeus Medical Gmbh Multi-component cartridge system with shiftable closures in the cartridges
EP2596873A2 (en) 2011-11-25 2013-05-29 Heraeus Medical GmbH Multiple component cartridge system with sliding locks in the cartridges
DE102011119357A1 (en) 2011-11-25 2013-05-29 Heraeus Medical Gmbh Multi-component cartridge system with sliding closures in the cartridges
EP2662150A2 (en) 2012-05-07 2013-11-13 Heraeus Medical GmbH Mixing device for multi-component systems
US8992071B2 (en) 2012-05-07 2015-03-31 Heraeus Medical Gmbh Mixing device for multi-component systems
DE102012008815A1 (en) 2012-05-07 2013-11-07 Heraeus Medical Gmbh Mixing device for multi-component systems
DE102017117199A1 (en) 2017-07-28 2019-01-31 3lmed GmbH Mixer with compensation channel and / or stowage chamber
WO2019020768A1 (en) 2017-07-28 2019-01-31 Kettenbach Gmbh & Co. Kg Mixer having compensation duct and/or holding chamber
US11717794B2 (en) 2017-07-28 2023-08-08 3lmed GmbH Mixer

Also Published As

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DE59407962D1 (en) 1999-04-22
US5498078A (en) 1996-03-12
EP0664153B1 (en) 1999-03-17
JPH0866627A (en) 1996-03-12
JP3591899B2 (en) 2004-11-24

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