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EP2747899B1 - Cartridge system and static mixer therefor - Google Patents

Cartridge system and static mixer therefor Download PDF

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Publication number
EP2747899B1
EP2747899B1 EP12744011.3A EP12744011A EP2747899B1 EP 2747899 B1 EP2747899 B1 EP 2747899B1 EP 12744011 A EP12744011 A EP 12744011A EP 2747899 B1 EP2747899 B1 EP 2747899B1
Authority
EP
European Patent Office
Prior art keywords
mixer
inlet
cartridge
mixing
connectors
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP12744011.3A
Other languages
German (de)
French (fr)
Other versions
EP2747899A1 (en
Inventor
Alexander Bublewitz
Jens-Peter Reber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
3lmed GmbH
Original Assignee
Kettenbach GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from PCT/EP2011/068784 external-priority patent/WO2012055926A1/en
Priority claimed from DE102012003390.7A external-priority patent/DE102012003390B4/en
Application filed by Kettenbach GmbH and Co KG filed Critical Kettenbach GmbH and Co KG
Priority to EP12744011.3A priority Critical patent/EP2747899B1/en
Publication of EP2747899A1 publication Critical patent/EP2747899A1/en
Application granted granted Critical
Publication of EP2747899B1 publication Critical patent/EP2747899B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/50—Mixing receptacles
    • B01F35/52—Receptacles with two or more compartments
    • B01F35/522—Receptacles with two or more compartments comprising compartments keeping the materials to be mixed separated until the mixing is initiated
    • 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
    • B05C17/00503—Details of the outlet element
    • B05C17/00506—Means for connecting the outlet element to, or for disconnecting it from, the hand tool or its container
    • B05C17/00513—Means for connecting the outlet element to, or for disconnecting it from, the hand tool or its container of the thread type
    • 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
    • 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
    • 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
    • B01F33/50112—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 of the syringe or cartridge type
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/71—Feed mechanisms
    • B01F35/711—Feed mechanisms for feeding a mixture of components, i.e. solids in liquid, solids in a gas stream
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/71—Feed mechanisms
    • B01F35/714—Feed mechanisms for feeding predetermined amounts
    • 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
    • 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
    • B05C17/00576—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 characterised by the construction of a piston as pressure exerting means, or of the co-operating container
    • B05C17/00579—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 characterised by the construction of a piston as pressure exerting means, or of the co-operating container comprising means for allowing entrapped air to escape to the atmosphere
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D1/00—Pipe-line systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/9029—With coupling

Definitions

  • the invention relates to a cartridge system with two containers, each having an outlet port and a joint opening provided with a positioning opening for a mixer, and with a static mixer with inlet nozzle and a positioning element. Furthermore, the invention relates to a static mixer, which is particularly suitable for use in such a cartridge system.
  • Cartridge systems of the type mentioned are from the WO 2011/041917 as well as from the EP 0 723 807 B1 known.
  • Such known cartridge systems usually have a bayonet connection for the connection between the static mixer and the containers of the cartridge.
  • An important aspect in connection between mixer and cartridge is often that the mixer should be placed in a certain position on the cartridge, so that the inlet and outlet ports meet, with a placement of the mixer is to be avoided in the wrong orientation.
  • the known cartridge systems can not reliably ensure that any contact between the inlet and outlet ports in the wrong orientation of the mixer relative to the cartridge is avoided. This can lead to so-called cross-contamination, ie the component from one of the outlet ports comes into contact with the component from the other outlet already in the inlet or outlet port and can react there and possibly harden, which is undesirable.
  • such mixers and cartridge systems sometimes have the problem that one of the components tends to advance from the components to be dispensed from the cartridge, ie, it exits the respective container more quickly than the component received in the other container. For this it is from the EP 0 584 428 B1 or the EP 0 664 153 B1 It is known to configure the inlet area of a mixer in such a way that the component, which tends to precipitate, is collected or deflected in the inlet area of the mixer before the components in the mixing space of the mixer are mixed with one another.
  • these measures are associated with an increase in the flow resistance within the mixer by multiple deflection of the components, which is perceived as a function of the viscosity of the components to be mixed as disadvantageous.
  • a mixer which can be attached by means of an adapter to a cartridge.
  • the adapter is provided for alignment relative to the cartridge with a pin-like projection which can engage in a corresponding opening on the cartridge housing.
  • the object of the present invention is to provide a cartridge system and a static mixer for this, in which cross contamination can not occur.
  • Another aspect of the present invention is to improve the flow behavior within the mixer and in a simple and reliable connection between the mixer and cartridge.
  • connection between the two containers (cartridge) and the mixer takes place via a threaded connection, wherein the connection region of the container has a ring surrounding the outlet with an internal thread, while the mixer is provided with an external thread, which is provided on the outside of the mixer housing ,
  • the length of the inlet stub, the outlet stub and the positioning element and the position of the positioning opening are matched to one another such that when the mixer is placed on the container, the positioning element engages in the positioning opening before the internal thread and the external thread intermesh.
  • the internal thread and the external thread engage one another before the inlet stub and the outlet stub can touch.
  • the positioning element which may be designed, for example, as a web or a tongue, protrudes in the direction of the cartridge beyond the inlet connection of the mixer.
  • the positioning member first engages a slot or the like opening on the cartridge before the threads of the female threaded collar of the cartridge and the external thread of the mixer can engage each other.
  • the inlet ports of the mixer can only touch the outlet of the cartridge when the threads of the cartridge and the mixer engage with each other, it is ensured that initially determined by the engagement of the positioning element in the corresponding positioning opening, the orientation of the mixer relative to the cartridge is before the other components can contact each other.
  • the positioning element can facilitate both the approach of the mixer to the cartridge as well as ensure a clear alignment and assignment of the mixer to the cartridge.
  • This has the advantage that a simple and intuitive merging of mixer and cartridge with a greater degree of freedom compared to known bayonet connections is possible.
  • the positioning element according to the invention differs from an example. From the EP 0 723 807 B1 known coding element, inter alia, that the mixer is guided in the cartridge and brought into the desired orientation, even before the actual connection of the mixer begins with the cartridge. Furthermore, the positioning element ensures from the beginning of the connection process to the correct orientation of the inlets and outlets to each other, without that they could come into contact with each other in a different orientation.
  • the threaded connection also ensures a particularly secure and firm locking of the mixer to the cartridge, whereby this lock is easy to actively release.
  • the positioning tongue is funnel-shaped in the opening slidably guided when the outlet nozzle with the inlet nozzle are sealingly pushed together.
  • the positioning tongue is in contact with the opening and aligns both the inlet and outlet ports to one another and the threads to one another. This is particularly relevant in a frequently occurring in practice mixer change to a cartridge inserted in a dispensing device, since the inlet and outlet are hidden here for a user in the rule, so it is important that the nozzle and thread by itself align.
  • the cartridge system according to the invention is suitable both for components which are to be mixed with one another in a mixing ratio of 1: 1 and for mixing ratios which are different from 1: 1.
  • the inner diameters of the outlet channels of the cartridge are preferably chosen to be the same size for both components, whereby a volume of the outlet channels corresponding to the desired metering ratios can be adjusted by, for example, cylindrical cores in the interior of the outlet channels.
  • a cross-sectional taper can be provided in at least one of the two inlet ports of the mixer be.
  • This (internal) cross-sectional taper can be designed as an insert or as a conical channel, for example, so that for 1: 1 different mixing ratios, the right amount of components enters the mixer.
  • a static mixer according to the invention has for this purpose a mixing chamber which extends parallel to a longitudinal axis of the mixer and in which a mixing element is provided, and a coupling section which is suitable for connecting the mixer to the cartridge.
  • the coupling section has two inlets which are in each case in fluid communication with the mixing chamber via channels and a positioning element.
  • the coupling portion additionally has an external thread, so that the coupling portion can be formed by different components of the mixer, in particular by the housing and an insert. Further, the two inlets are formed as spaced-apart nozzle between which a partition wall is provided.
  • the positioning element protrudes in the direction of the longitudinal axis over the two inlets of the mixer.
  • the positioning member also projects beyond an intended partition wall and beyond the housing of the mixer, so that the positioning element must first be inserted into the corresponding opening of the cartridge before other components of the mixer come into contact with the cartridge.
  • a reservoir for mixing ratios other than 1: 1, is associated with a reservoir, which is disposed between the first inlet and the mixing space, and a reservoir Cross-sectional area which is greater than the cross-sectional area of the channel portion between the first inlet and the reservoir chamber.
  • the cross-sectional area of the inlet channel of the mixer is smaller than the cross-sectional area of the reservoir chamber, so that a tendency-prone component can be absorbed in the reservoir chamber, whereby this component delays or only a subsequent portion of this component passes into the actual mixing chamber.
  • the flow conditions within the static mixer have been found to be particularly favorable when the cross-sectional area of the channel portion located between the first inlet and the reservoir chamber is between about 80% and about 150% of the cross-sectional area of an opening or channel portion into the mixing space empties.
  • This extensive omission of cross-sectional tapers downstream of the reservoir chamber it is also possible to apply more viscous components with comparatively low discharge forces.
  • the channel section located between the first inlet and the reservoir chamber faces in the axial direction an opening or a (further) channel section which opens into the mixing chamber.
  • the elimination of deflections or their minimization in the channel located between the inlet and the mixing chamber minimizes the flow resistance.
  • the channel section located between the first inlet and the reservoir chamber may be arranged offset in the axial direction to an opening or a (further) channel section which opens into the mixing chamber.
  • the channel connecting the second inlet to the mixing space connects, as directly as possible passes into the mixing chamber, said channel can be passed to the reservoir chamber or passed therethrough.
  • the cross-sectional area of this second channel is smaller than that of the channel portion between the first inlet and the reservoir chamber.
  • the partition wall provided between the sockets of the inlets extends beyond these sockets in the direction of the cartridge. Even if components are dispensed with components prior to the start of the first mixing operation at the outlet ports of the cartridges, they can not pollute or contaminate the inlet ports of the mixer because of the partition wall. The same applies if an already used mixer removed and a new mixer is placed on the cartridge. Regardless of the positioning element also contributes to the partition that the mixer can not be placed in any position on the cartridge.
  • the mixer consists of exactly two components, namely a housing and an insert, which is axially secured and rotatably received relative to the housing in this.
  • the housing forms the, in particular, cylindrical mixing space and has an area widening in relation to the mixing space, which area forms the coupling section.
  • This widened region of the housing can be provided with the external thread, via which the mixer can be firmly connected to the cartridge. Due to the rotatability of the insert relative to the housing, a locking of the mixer to the cartridge can take place by screwing on, even if the insert of the mixer is previously aligned relative to the cartridge by means of the positioning element.
  • This also allows that while unscrewing the Mixer on the cartridge, the inlet ports of the mixer and the outlet of the cartridge interlock.
  • the inlet ports of the mixer are preferably inserted into the outlet of the cartridge.
  • the seal between the two components of the mixer can be axial and / or radial.
  • the axial seal with two sealing regions of the housing or of the insert lying successively in the longitudinal direction of the mixer has the advantage that the sealing effect when tightening the threaded connection to the cartridge is improved.
  • the use of the mixer can thus initially be freely rotatable in the housing and the sealing function only (fully) occurs after the assembly of the mixer to the cartridge.
  • the radial seal has the advantage that for this purpose e.g. a radial groove and a circumferential radial web can be used, which can be provided for freely rotatable connection of the two components of the mixer.
  • the unscrewing of the mixer therefore requires a relative rotational movement between the use of the mixer and the housing of the mixer, such a relative movement in the cured state of the components is difficult, when the mixer element, for example a mixing helix, is formed integrally with the insert.
  • the mixer has the mixing element, the two inlets and the positioning element as a one-piece component, wherein the mixer element can be separated via a predetermined breaking point of the two inlets and the positioning element.
  • cartridge system consists essentially of a mixer 1 and a double cartridge, which is formed by two containers 2a, 2b, which are integrally connected to each other.
  • a dispensing piston 3 a and 3 b is respectively provided for discharging the components received in the containers.
  • the dispensing piston can be moved via a device, not shown, within the container become.
  • the containers are each provided with an outlet nozzle 4a, 4b.
  • the outlet 4 a, 4 b are surrounded by a provided on the end-side end wall of the double cartridge ring 5, which is on his Inside a thread 6 carries. As well as out Fig. 1 it can be seen, are the outlet nozzle 4a, 4b (in Fig. 1 to the top) over the ring 5.
  • the outlet ports 4a, 4b are spaced apart, so that between them an in Fig. 1 recognizable gap or free space remains.
  • a flange or the like Be provided to secure the cartridge in a suitable dispensing device.
  • Fig. 3 As from the enlarged view of Fig. 3 it can be seen that extends into the Fig. 1 and 2 upper end wall partially beyond the two cylindrical containers 2a, 2b, so that the ring 5 is closed by a bottom, which is pierced by the two outlet 4 a, 4 b and also has a positioning opening 7, which in the in Fig. 3 shown embodiment, for example. Trapezoidal. Alternatively, the cross section may also be rectangular or triangular.
  • the mixer 1 is a so-called static mixer, ie it has no actively driven mixer element.
  • the mixer 1 is composed of two components, namely a mixer housing 8 and an insert 9, in the housing 8 in the axial Direction fixed, but is held rotatable. This can be done for example by means of a circumferential groove in the housing 8, in which a bead-like projection of the insert 9 engages, as in Fig. 5 is indicated.
  • the housing 8 of the mixer 1 consists of an elongated cylindrical tube, which can taper at its outlet end 10.
  • This elongated cylindrical portion of the housing 8 forms the actual mixing chamber in its interior.
  • the outlet end 10 opposite end of the housing 8 is widened with respect to this cylindrical portion and formed as a coupling portion, which serves for attachment of the mixer 1 to the cartridge (container 2a, 2b).
  • the coupling portion is provided with an external thread 11, which according to the embodiment of the Fig. 2 to 4 is formed by a plurality of threaded portions, while in the embodiment of the FIGS. 5 and 6 an overlapping thread is provided.
  • a profiled area may be provided adjacent to the thread 11, which facilitates the operation of the mixer 1, in particular the screwing of the mixer 1 in the ring of the cartridge.
  • the insert 9 has a plate 12, on which a mixer element 13, for example a mixing helix, as well as inlet ports 14a, 14b are formed.
  • the size of the inlet pipe 14a, 14b is sized so that they can be inserted into the outlet 4 a and 4 b of the cartridge.
  • the inlet ports 14a, 14b are spaced from each other, wherein in addition between the inlet port, a partition wall 15 is provided which protrudes from the plate 12 further than the inlet ports 14a, 14b.
  • the partition wall 15 can thus engage in the gap or clearance between the outlet stubs 4a, 4b and thus prevents, for example, components from the outlet stub 4a from reaching the inlet stub 14b or vice versa.
  • an elongated positioning member 16 which is an approximately triangular or e.g. Having trapezoidal cross-section and thus accurately fit into the positioning hole 7 of the cartridge can be inserted.
  • the positioning element 16 not only projects beyond the dividing wall 15 and the inlet ports 14a, 14b, but also protrudes beyond the housing 8 of the mixer 1 in the direction of the cartridge. This has the effect that, when the mixer 1 is placed on the cartridge, the positioning element 16 first enters the space delimiting the ring 5 without the remaining components of the mixer 1 touching the cartridge or its outlet nozzle.
  • the mixer 1 can be plugged onto the cartridge so far that the thread 11 of the mixer engages in the thread 6 of the cartridge.
  • the outlet ports 4a, 4b and the inlet ports 14a, 14b then come into engagement with each other.
  • the positioning element 16 occurs with its free end through the opening 7, so that the exact alignment of the mixer can also be controlled from the outside.
  • the free end of the positioning element 16 may be colored or marked in another way.
  • the positioning element 16 can be beveled or tapered at its free end, as shown.
  • elements may be provided in the bottom of the ring 6, ribs or the like, which guide the positioning element 16 in the direction of the positioning opening 7.
  • the positioning member 16 are formed on the mixer 1 and the corresponding opening 7 on the cartridge.
  • the advantages of the invention also occur when the Positioning element on the cartridge and the opening are formed on the mixer.
  • a further partition wall 17 may be provided which is aligned in the illustrated embodiment perpendicular to the first partition wall 15, so that the partition wall 17, the inflowing through the inlet ports 14a, 14b components each into two streams divides.
  • the mixer element 13 is connected in a preferred embodiment via a predetermined breaking point with the partition wall 17. This is particularly important in used mixers, in the mixing chamber of the 2-component material is cured and remain as usual as closure until the next application on the cartridge.
  • Fig. 5 runs from the inlet port 14a for the smaller volume component from the container 2a, a cylindrical channel 18 in the direction of the mixing chamber.
  • the partition 17 may partially extend into the channel 18 and / or the channel portion 19a.
  • the inlet nozzle 14b forms a first channel section 19a and the reservoir chamber 19b an enlarged channel section. Downstream of the reservoir chamber 19b can an opening 19c or another channel section may be provided which opens into the mixing space.
  • the size of the reservoir chamber 19b can be varied variably by the position of a wall 20, which extends perpendicular to the partition 17 in the illustrated embodiment. As far as the entering through the inlet port 14b component tends to advance, a leading portion of this component can first be collected in the reservoir chamber 19b before the further inflowing component passes together with the other component in the mixing chamber. How out Fig. 5 can be seen, the entering through the inlet port 14b component without further deflection from the reservoir chamber 19b get into the mixing chamber. This minimizes flow resistance.
  • the in the 4 to 6 illustrated static mixer 1 has some advantages over known static mixers. Thus, first by the threaded connection 6, 11 with the cartridge a secure and secure locking possible. In addition, the mixer by unscrewing the cartridge can be actively solved by this and lifted.
  • the two-part design of the mixer 1 also brings cost advantages.
  • the free rotation of the insert 9 in the mixer housing 8 allows a simple and cost-effective installation, in which, unlike in known mixers, it is not necessary to ensure that the components are aligned with one another.
  • the partition wall 15 and the outlet 5 a, 4 b protruding from the ring 5 also largely prevent soiling or cross contamination.
  • a mixer for the mixing ratio 1: 1 of the components can not be placed on a cartridge for a mixing ratio of, for example, 1:10 and vice versa.
  • a cross-sectional taper which takes into account the 1: 1 different mixing ratio of the components with the same outer diameter of the two inlet ports.
  • Fig. 7 the seal between the two components of the mixer is shown in detail.
  • a cone seal in the mixer between the inside of the housing 8 and the outside of the insert 9 is provided.
  • a latching connection is provided with a circumferential groove 21 in the housing and a circumferential ridge 22 in the insert.
  • the seal has corresponding conical sealing surfaces 23, 24, which in Fig. 7 above the groove or the web on the inside of the housing 8 and the outside of the insert 9 are formed.
  • Fig. 8 shows another sectional view of the cartridge system, wherein the case is shown that a user tries to put the mixer wrong (tilted) on the cartridge.
  • An important feature of the cartridge system according to the invention is the avoidance of unwanted carry-over of catalyst component and base component and could lead to the respective other paste component and their contamination. This could be due to accidental, unwanted insertion of the positioning tab first in one, then in the other channel or by touching the inlet and outlet channels of the cartridge and mixer in the unfavorable tilted placement in the wrong position, or analogous to the tilted replacement of a sealing plug.
  • the positioning tongue on the mixer (or on a closure plug) is designed so that it can not be inserted into the outlet channels.
  • the dividing wall is dimensioned such that it allows only small tilt angles between the outlet channels of the cartridge. If necessary, contours can be attached to the outlet channels of the cartridge, which further limit the play for the partition used with regard to unfavorable tilt angles.
  • a closure plug may have an additional sleeve-shaped collar (at the point where the thread is located at the mixer) and thus also avoids unfavorable tilt angles.
  • the invention also relates to a in the FIGS. 9 and 10 shown one-piece closure element, which instead of the mixer 1 on the double cartridge forming container 2a, 2b can be placed.
  • a plugs 21 are provided, which can be inserted sealingly into the outlet 4 a and 4 b.
  • the plugs are each connected via a web 22, which acts as a torsion spring, to a sleeve which can be inserted into the collar of the outlet end of the double cartridge.
  • An extended edge of the sleeve which is provided with a knurling, rests on the front side of the collar when the closure element is sealingly placed on the double cartridge.
  • the closure element can be secured in the collar (ring 5) by means of latching hooks 23, which engage behind the thread segments of the internal thread 6 and thus lock the closure element on the double cartridge.
  • latching hooks 23 engage behind the thread segments of the internal thread 6 and thus lock the closure element on the double cartridge.
  • the sleeve can be twisted slightly with the knurling, wherein the web 22 twists, since the plug 21 initially stuck in the outlet 4 a and 4 b.
  • This twisting of the web 22 acting as a torsion element makes it possible for the latching hooks to be disengaged from the thread segments of the internal thread 6, so that the closure element can be removed from the double cartridge.
  • the closure plug similar to the mixer, has a positioning tab 16 which may be configured to be visible to the user after passing through a corresponding opening in the cartridge. This has the advantage of visual visual inspection as to whether the closure plug and / or the positioning tab is properly inserted.
  • the torsion element of the sealing plug can, as in Fig. 9 shown to have a radial S-shape in order to secure a corresponding rotation even with small plug diameter.
  • the in Fig. 10 also shown sealing plug is equipped with a partition 17 which is similar to the mixer between the plug 21.
  • the partition wall 17 is provided with constrictions in the vicinity of the plugs 21, whereby the placement of the closure is facilitated without tilting.
  • a dispensing piston is shown with a Dehver gleich, which can be used in a cartridge system according to the invention for dispensing the components from the containers.
  • the piston is hereby provided with a vent, which allows air from the respective Tank leaks when it is filled with the component and the delivery piston is used. Since some substances tend to react with the remaining after filling the cartridge and the insertion of the piston in the cartridge residual air, it is anxious to let the residual air escape as completely as possible from the container. Any remaining in the container residual air between the piston and the substance located in the cartridge is also considered to be disadvantageous because the residual air forms a compressible pad that complicates the accuracy of the dosage when applying the substance from the cartridge.
  • the in the FIGS. 11 to 13 shown piston 100 has a base 101, which has a side wall provided with sealing means and an end wall, in which a vent opening 102 is provided.
  • This vent opening 102 extends through the entire base body, so that an air exchange between the side of the end wall (located in the conveying direction) and the back of the piston 100 is possible.
  • a closure element 103 is rotatably mounted in the ventilation opening 102, wherein a ventilation channel can be opened or closed by a relative rotation of the closure element 103 in the ventilation opening 102. In other words, it is possible to establish or prevent the flow connection between the downstream side of the piston 100 and the rear side of the piston with a rotation of the closure element 103.
  • a circumferential projection 104 is formed on the inner surface of the vent opening 102, which engages in a corresponding groove 105 in the closure element 103 in order to lock them together.
  • Both the projection 104 and the groove 105 are each provided with openings, which can be brought into coverage to release a vent channel, or be brought out of coverage can to close the vent channel.
  • the opening extends through the groove 105 perpendicular thereto, which may be formed slightly deeper than the opening, so that the projection 104 can securely close the openings.
  • the star-shaped vent slots 106 are tapered so that the total cross-sectional area is reduced to a fraction, e.g. to 1/100, the original cross-sectional area is reduced. In this way, trapped air can continue to flow unhindered into the open when closing the cartridge, but the access of impression material to the venting valve is made much more difficult.
  • FIGS. 14 to 16 An alternative embodiment of a Ausbringkolbens with Dehver gleich is in the FIGS. 14 to 16 is a shown, in turn, consists of a base 101 and a closure element 103. In addition, a sealing ring 107 is provided. In the embodiment of the FIGS. 14 to 16 is only a single vent opening 102 formed between the base 101 and the closure element 103, so that this variant can be used even in confined spaces.
  • a comparison of FIGS. 15 and 16 shows how the vent opening 102 opens depending on the rotational position of the closure element 103 in the base body 101 ( Fig. 15 ) or closes ( Fig. 16 ).
  • a cartridge for a mixing ratio of the components of 1: 1 is in Fig. 17 shown.
  • the two containers 2a, 2b have the same dimensions.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Package Specialized In Special Use (AREA)
  • Accessories For Mixers (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Description

Die Erfindung betrifft ein Kartuschensystem mit zwei Behältern, die jeweils einen Auslassstutzen sowie einen mit einer Positionierungsöffnung versehenen gemeinsamen Anschlussbereich für einen Mischer aufweisen, und mit einem statischen Mischer mit Einlassstutzen und einem Positionierungselement. Weiter betrifft die Erfindung einen statischen Mischer, der insbesondere zur Verwendung in einem solchen Kartuschensystem geeignet ist.The invention relates to a cartridge system with two containers, each having an outlet port and a joint opening provided with a positioning opening for a mixer, and with a static mixer with inlet nozzle and a positioning element. Furthermore, the invention relates to a static mixer, which is particularly suitable for use in such a cartridge system.

Kartuschensysteme der eingangs genannten Art sind aus der WO 2011/041917 sowie aus der EP 0 723 807 B1 bekannt. Derartige bekannte Kartuschensysteme weisen zur Verbindung zwischen dem statischen Mischer und den Behältern der Kartusche meist eine Bajonettverbindung auf. Ein wichtiger Aspekt ist bei der Verbindung zwischen Mischer und Kartusche häufig, dass der Mischer in einer bestimmten Position auf die Kartusche aufgesteckt werden soll, so dass sich die Einlass- und Auslassstutzen treffen, wobei ein Aufsetzen des Mischers in falscher Ausrichtung vermieden werden soll. Es ist daher bekannt, sogenannte Kodierungselemente vorzusehen, die eine feste Verbindung zwischen dem Mischer und der Kartusche verhindern, sofern der Mischer nicht in der richtigen Ausrichtung auf die Kartusche aufgesetzt wird. Die bekannten Kartuschensysteme können dabei nicht zuverlässig sicherstellen, dass jeglicher Kontakt zwischen Einlass- und Auslassstutzen in falscher Ausrichtung des Mischers relativ zu der Kartusche vermieden wird. Dies kann zu einer sogenannten Kreuzkontamination führen, d.h. die Komponente aus einem der Auslassstutzen kommt mit der Komponente aus dem anderen Auslassstutzen bereits im Bereich der Einlass- oder Auslassstutzen in Kontakt und kann dort reagieren und ggf. aushärten, was unerwünscht ist.Cartridge systems of the type mentioned are from the WO 2011/041917 as well as from the EP 0 723 807 B1 known. Such known cartridge systems usually have a bayonet connection for the connection between the static mixer and the containers of the cartridge. An important aspect in connection between mixer and cartridge is often that the mixer should be placed in a certain position on the cartridge, so that the inlet and outlet ports meet, with a placement of the mixer is to be avoided in the wrong orientation. It is therefore known to provide so-called coding elements, which prevent a firm connection between the mixer and the cartridge, unless the mixer is placed in the correct orientation on the cartridge. The known cartridge systems can not reliably ensure that any contact between the inlet and outlet ports in the wrong orientation of the mixer relative to the cartridge is avoided. This can lead to so-called cross-contamination, ie the component from one of the outlet ports comes into contact with the component from the other outlet already in the inlet or outlet port and can react there and possibly harden, which is undesirable.

Weiter ist aus der DE 20 2011 002 407 U1 ein Mischer mit einer Führungsrippe bekannt, welcher mittels eines Sicherungsbügels an einer Kartusche befestigt werden kann.Next is from the DE 20 2011 002 407 U1 a mixer with a guide rib known, which can be attached by means of a securing bracket to a cartridge.

Bei derartigen Mischern und Kartuschensystemen existiert zudem teilweise das Problem, dass von den aus der Kartusche abzugebenden Komponenten eine der Komponenten zum Voreilen neigt, d.h. rascher aus dem jeweiligen Behälter austritt als die in dem anderen Behälter aufgenommene Komponente. Hierzu ist es aus der EP 0 584 428 B1 oder der EP 0 664 153 B1 bekannt, den Einlassbereich eines Mischers so zu gestalten, dass die zum Vorauseilen neigende Komponente im Einlassbereich des Mischers aufgefangen oder umgelenkt wird, bevor die Komponenten im Mischraum des Mischers miteinander vermischt werden. Diese Maßnahmen sind jedoch mit einer Erhöhung des Strömungswiderstands innerhalb des Mischers durch mehrfaches Umlenken der Komponenten verbunden, was in Abhängigkeit der Viskosität der zu mischenden Komponenten als nachteilig empfunden wird.Moreover, such mixers and cartridge systems sometimes have the problem that one of the components tends to advance from the components to be dispensed from the cartridge, ie, it exits the respective container more quickly than the component received in the other container. For this it is from the EP 0 584 428 B1 or the EP 0 664 153 B1 It is known to configure the inlet area of a mixer in such a way that the component, which tends to precipitate, is collected or deflected in the inlet area of the mixer before the components in the mixing space of the mixer are mixed with one another. However, these measures are associated with an increase in the flow resistance within the mixer by multiple deflection of the components, which is perceived as a function of the viscosity of the components to be mixed as disadvantageous.

Aus der EP 1 972 387 A2 ist ein Mischer bekannt, welcher mittels eines Adapters an einer Kartusche befestigt werden kann. Der Adapter ist zur Ausrichtung relativ zu der Kartusche mit einem stiftartigen Vorsprung versehen, der in eine entsprechende Öffnung am Kartuschengehäuse eingreifen kann.From the EP 1 972 387 A2 a mixer is known, which can be attached by means of an adapter to a cartridge. The adapter is provided for alignment relative to the cartridge with a pin-like projection which can engage in a corresponding opening on the cartridge housing.

Aufgabe der vorliegenden Erfindung ist es demgegenüber, ein Kartuschensystem sowie einen statischen Mischer hierfür bereitzustellen, bei denen eine Kreuzkontamination nicht auftreten kann. Ein weiterer Aspekt der vorliegenden Erfindung liegt in der Verbesserung des Strömungsverhaltens innerhalb des Mischers sowie in einer einfachen und zuverlässigen Verbindung zwischen Mischer und Kartusche.In contrast, the object of the present invention is to provide a cartridge system and a static mixer for this, in which cross contamination can not occur. Another aspect of the present invention is to improve the flow behavior within the mixer and in a simple and reliable connection between the mixer and cartridge.

Diese Aufgabe wird erfindungsgemäß mit einem Kartuschensystem mit den Merkmalen des Anspruchs 1 gelöst. Die Verbindung zwischen den beiden Behältern (Kartusche) und dem Mischer erfolgt dabei über eine Gewindeverbindung, wobei der Anschlussbereich der Behälter einen die Auslassstutzen umgebenden Ring mit einem Innengewinde aufweist, während der Mischer mit einem Außengewinde versehen ist, das auf der Außenseite des Mischergehäuses vorgesehen ist. Erfindungsgemäß sind die Länge der Einlassstutzen, der Auslassstutzen und des Positionierungselements sowie die Position der Positionierungsöffnung derart aufeinander abgestimmt, dass beim Aufsetzen des Mischers auf die Behälter das Positionierungselement in die Positionierungsöffnung eingreift, bevor das Innengewinde und das Außengewinde ineinander eingreifen. Zudem greifen erfindungsgemäß das Innengewinde und das Außengewinde ineinander ein, bevor sich die Einlassstutzen und die Auslassstutzen berühren können.This object is achieved with a cartridge system with the features of claim 1. The connection between the two containers (cartridge) and the mixer takes place via a threaded connection, wherein the connection region of the container has a ring surrounding the outlet with an internal thread, while the mixer is provided with an external thread, which is provided on the outside of the mixer housing , According to the invention, the length of the inlet stub, the outlet stub and the positioning element and the position of the positioning opening are matched to one another such that when the mixer is placed on the container, the positioning element engages in the positioning opening before the internal thread and the external thread intermesh. In addition, according to the invention, the internal thread and the external thread engage one another before the inlet stub and the outlet stub can touch.

Hierzu ragt das Positionierungselement, welches beispielsweise als ein Steg oder eine Zunge gestaltet sein kann, in Richtung zu der Kartusche über die Einlassstutzen des Mischers hinaus. Das Positionierungselement kommt somit während des Befestigens des Mischers an der Kartusche zunächst mit einem Schlitz oder dgl. Öffnung an der Kartusche in Eingriff, bevor die Gewindegänge des Innengewindekragens der Kartusche und das Außengewinde des Mischers ineinander eingreifen können. Da zudem auch die Einlassstutzen des Mischers die Auslassstutzen der Kartusche erst dann berühren können, wenn die Gewinde der Kartusche und des Mischers ineinander eingreifen, ist sichergestellt, dass durch den Eingriff des Positionierungselements in die entsprechende Positionierungsöffnung zunächst die Ausrichtung des Mischers relativ zu der Kartusche festgelegt wird, bevor die übrigen Bauteile miteinander in Kontakt treten können.For this purpose, the positioning element, which may be designed, for example, as a web or a tongue, protrudes in the direction of the cartridge beyond the inlet connection of the mixer. Thus, during attachment of the mixer to the cartridge, the positioning member first engages a slot or the like opening on the cartridge before the threads of the female threaded collar of the cartridge and the external thread of the mixer can engage each other. In addition, since the inlet ports of the mixer can only touch the outlet of the cartridge when the threads of the cartridge and the mixer engage with each other, it is ensured that initially determined by the engagement of the positioning element in the corresponding positioning opening, the orientation of the mixer relative to the cartridge is before the other components can contact each other.

Das Positionierungselement kann dabei sowohl das Heranführen des Mischers an die Kartusche erleichtern als auch eine eindeutige Ausrichtung und Zuordnung des Mischers zu der Kartusche sicherstellen. Dies bringt den Vorteil mit sich, dass ein einfaches und intuitives Zusammenführen von Mischer und Kartusche mit einem größeren Freiheitsgrad im Vergleich zu bekannten Bajonettverbindungen möglich ist. Mit anderen Worten unterscheidet sich das erfindungsgemäße Positionierungselement von einem bspw. aus der EP 0 723 807 B1 bekannten Kodierungselement u.a. darin, dass der Mischer in der Kartusche geführt und in die gewünschte Ausrichtung gebracht wird, noch bevor die eigentliche Verbindung des Mischers mit der Kartusche beginnt. Weiter sichert das Positionierungselement von Beginn des Verbindungsvorgangs an die richtige Ausrichtung der Ein- und Auslässe zueinander, ohne dass diese in einer anderen Ausrichtung miteinander in Kontakt kommen könnten. Die Gewindeverbindung sorgt zudem für eine besonders sichere und feste Arretierung des Mischers an der Kartusche, wobei diese Arretierung einfach aktiv zu lösen ist.The positioning element can facilitate both the approach of the mixer to the cartridge as well as ensure a clear alignment and assignment of the mixer to the cartridge. This has the advantage that a simple and intuitive merging of mixer and cartridge with a greater degree of freedom compared to known bayonet connections is possible. In other words, the positioning element according to the invention differs from an example. From the EP 0 723 807 B1 known coding element, inter alia, that the mixer is guided in the cartridge and brought into the desired orientation, even before the actual connection of the mixer begins with the cartridge. Furthermore, the positioning element ensures from the beginning of the connection process to the correct orientation of the inlets and outlets to each other, without that they could come into contact with each other in a different orientation. The threaded connection also ensures a particularly secure and firm locking of the mixer to the cartridge, whereby this lock is easy to actively release.

Vorzugsweise ist die Positionierungszunge trichterförmig in der Öffnung gleitend geführt, wenn die Auslassstutzen mit den Einlassstutzen dichtend ineinander geschoben werden. Mit anderen Worten ist die Positionierungszunge während der Montage des Mischers auf den Behältern der Kartusche in Kontakt mit der Öffnung und richtet sowohl die Ein- und Auslassstutzen zueinander als auch die Gewinde zueinander aus. Dies ist insbesondere bei einem in der Praxis häufig auftretenden Mischerwechsel an einer in einem Ausbringgerät eingelegten Kartusche relevant, da die Ein- und Auslassstutzen hierbei für einen Benutzer in der Regel verdeckt sind, so dass es wichtig ist, dass sich die Stutzen und Gewinde von alleine ausrichten.Preferably, the positioning tongue is funnel-shaped in the opening slidably guided when the outlet nozzle with the inlet nozzle are sealingly pushed together. In other words, during assembly of the mixer on the containers of the cartridge, the positioning tongue is in contact with the opening and aligns both the inlet and outlet ports to one another and the threads to one another. This is particularly relevant in a frequently occurring in practice mixer change to a cartridge inserted in a dispensing device, since the inlet and outlet are hidden here for a user in the rule, so it is important that the nozzle and thread by itself align.

Vor der erstmaligen Inbetriebnahme eines solchen Kartuschensystems wird häufig zunächst eine geringe Menge der in den Behältern aufgenommenen Komponenten ausgebracht, ohne einen Mischer auf die Kartusche aufzusetzen. Das Ausbringen der Komponenten erfolgt über Kolben innerhalb der Behälter, so dass durch das Ausbringen einer geringen Menge der Komponenten vor dem ersten Mischvorgang etwaige Toleranzen innerhalb der Behälter oder der Position der Kolben oder der Füllmengen der Behälter ausgeglichen werden können, um zu Beginn des eigentlichen Mischvorgangs möglichst beide Komponenten gleichmäßig auszubringen. Aufgrund des die Auslassstutzen der Kartusche umgebenden Rings mit Gewinde besteht dabei die Gefahr, dass das Innengewinde des Rings durch die aus den Behältern austretenden Komponenten verschmutzt wird, was zudem die Befestigung des Mischers erschweren kann. Nach einer bevorzugten Ausführungsform der Erfindung stehen daher die Auslassstutzen über den diese umgebenden Ring in Richtung des Mischers hervor. Durch das Vorstehen der Auslassstutzen gegenüber dem Ring wird ein Verschmutzen des Innenbereichs des Rings bestmöglich vermieden und die aus der Kartusche austretenden Komponenten können aufgefangen und verworfen werden.Before the initial startup of such a cartridge system is often initially a small amount of recorded in the containers Components applied without putting a mixer on the cartridge. The components are dispensed via pistons within the containers, so that by dispensing a small amount of the components prior to the first mixing, any tolerances within the containers or the position of the pistons or the contents of the containers can be compensated for at the beginning of the actual mixing process if possible apply both components evenly. Due to the surrounding the outlet of the cartridge threaded ring there is a risk that the internal thread of the ring is contaminated by the leaking from the containers components, which may also make it difficult to attach the mixer. According to a preferred embodiment of the invention, therefore, the outlet ports protrude beyond the surrounding ring in the direction of the mixer. By projecting the outlet nozzle relative to the ring, contamination of the inner region of the ring is best avoided and the components emerging from the cartridge can be collected and discarded.

Das erfindungsgemäße Kartuschensystem ist sowohl für Komponenten geeignet, die in einem Mischungsverhältnis von 1:1 miteinander zu mischen sind als auch für von 1:1 verschiedene Mischungsverhältnisse. Zum Regeln der Durchflussmengen bei unterschiedlichen Dosierverhältnissen werden die Innendurchmesser der Auslasskanäle der Kartusche vorzugsweise für beide Komponenten gleich groß gewählt, wobei durch, bspw. zylindrische, Kerne im Inneren der Auslasskanäle ein den gewünschten Dosierverhältnissen entsprechendes Volumen der Auslasskanäle eingestellt werden kann. So ist es beispielsweise möglich, derartige Zylinderkerne über Stege angebunden mittig innerhalb der Auslassstutzen anzuordnen. Hierbei kann es ausreichend sein, in nur einem der beiden Auslassstutzen einen solchen Zylinderkern vorzusehen. Alternativ oder zusätzlich zu den Zylinderkernen kann in wenigstens einem der beiden Einlassstutzen des Mischers eine Querschnittsverjüngung vorgesehen sein. Diese (innere) Querschnittsverjüngung kann als ein Einsatz oder als ein z.B. konisch verlaufender Kanal gestaltet sein, so dass für von 1:1 verschiedene Mischungsverhältnisse die richtige Menge der Komponenten in den Mischer gelangt.The cartridge system according to the invention is suitable both for components which are to be mixed with one another in a mixing ratio of 1: 1 and for mixing ratios which are different from 1: 1. To control the flow rates at different metering ratios, the inner diameters of the outlet channels of the cartridge are preferably chosen to be the same size for both components, whereby a volume of the outlet channels corresponding to the desired metering ratios can be adjusted by, for example, cylindrical cores in the interior of the outlet channels. Thus, it is possible, for example, to arrange such cylinder cores connected via webs centrally within the outlet nozzle. It may be sufficient to provide such a cylinder core in only one of the two outlet. Alternatively or in addition to the cylinder cores, a cross-sectional taper can be provided in at least one of the two inlet ports of the mixer be. This (internal) cross-sectional taper can be designed as an insert or as a conical channel, for example, so that for 1: 1 different mixing ratios, the right amount of components enters the mixer.

Die der Erfindung zugrunde liegende Aufgabe wird zudem durch einen statischen Mischer mit den Merkmalen des Anspruchs 4 gelöst. Ein erfindungsgemäßer statischer Mischer weist hierzu einen Mischraum, der sich parallel zu einer Längsachse des Mischers erstreckt und in dem ein Mischelement vorgesehen ist, sowie einen Ankopplungsabschnitt auf, der zum Verbinden des Mischers mit der Kartusche geeignet ist. Der Ankopplungsabschnitt weist dabei zwei jeweils über Kanäle mit dem Mischraum in Strömungsverbindung stehende Einlässe und ein Positionierungselement auf. Erfindungsgemäß weist der Ankopplungsabschnitt zusätzlich ein Außengewinde auf, so dass der Ankopplungsabschnitt durch unterschiedliche Bauteile des Mischers, insbesondere durch das Gehäuse und einen Einsatz, gebildet sein kann. Weiter sind die beiden Einlässe als voneinander beabstandete Stutzen ausgebildet zwischen denen eine Trennwand vorgesehen ist. Um eine Kreuzkontamination zu verhindern, steht das Positionierungselement in Richtung der Längsachse über die beiden Einlässe des Mischers hervor. Insbesondere ragt das Positionierungselement auch über eine vorgesehene Trennwand und über das Gehäuse des Mischers hinaus, so dass das Positionierungselement zunächst in die entsprechende Öffnung der Kartusche eingesteckt werden muss, bevor andere Komponenten des Mischers mit der Kartusche in Kontakt kommen.The object underlying the invention is also achieved by a static mixer with the features of claim 4. A static mixer according to the invention has for this purpose a mixing chamber which extends parallel to a longitudinal axis of the mixer and in which a mixing element is provided, and a coupling section which is suitable for connecting the mixer to the cartridge. In this case, the coupling section has two inlets which are in each case in fluid communication with the mixing chamber via channels and a positioning element. According to the invention, the coupling portion additionally has an external thread, so that the coupling portion can be formed by different components of the mixer, in particular by the housing and an insert. Further, the two inlets are formed as spaced-apart nozzle between which a partition wall is provided. In order to prevent cross-contamination, the positioning element protrudes in the direction of the longitudinal axis over the two inlets of the mixer. In particular, the positioning member also projects beyond an intended partition wall and beyond the housing of the mixer, so that the positioning element must first be inserted into the corresponding opening of the cartridge before other components of the mixer come into contact with the cartridge.

Nach einer bevorzugten Ausführungsform ist für von 1:1 verschiedene Mischungsverhältnisse einem ersten Einlass eine Reservoirkammer zugeordnet, die zwischen dem ersten Einlass und dem Mischraum angeordnet ist und eine Querschnittsfläche aufweist, die größer als die Querschnittsfläche des Kanalabschnitts zwischen dem ersten Einlass und der Reservoirkammer ist. Mit anderen Worten ist die Querschnittsfläche des Einlasskanals des Mischers kleiner als die Querschnittsfläche der Reservoirkammer, so dass in der Reservoirkammer eine zum Vorauseilen neigende Komponente aufgefangen werden kann, wodurch diese Komponente verzögert oder nur ein nachfließender Anteil dieser Komponente in den eigentlichen Mischraum gelangt.According to a preferred embodiment, for mixing ratios other than 1: 1, a reservoir is associated with a reservoir, which is disposed between the first inlet and the mixing space, and a reservoir Cross-sectional area which is greater than the cross-sectional area of the channel portion between the first inlet and the reservoir chamber. In other words, the cross-sectional area of the inlet channel of the mixer is smaller than the cross-sectional area of the reservoir chamber, so that a tendency-prone component can be absorbed in the reservoir chamber, whereby this component delays or only a subsequent portion of this component passes into the actual mixing chamber.

Die Strömungsverhältnisse innerhalb des statischen Mischers haben sich als besonders günstig erwiesen, wenn die Querschnittsfläche des zwischen dem ersten Einlass und der Reservoirkammer gelegenen Kanalabschnitts zwischen etwa 80% und etwa 150% der Querschnittsfläche einer Öffnung oder eines Kanalabschnitts beträgt, die bzw. der in den Mischraum mündet. Durch diesen weitgehenden Verzicht auf Querschnittsverjüngungen stromabwärts der Reservoirkammer können auch viskosere Komponenten mit vergleichsweise geringen Austragkräften ausgebracht werden.The flow conditions within the static mixer have been found to be particularly favorable when the cross-sectional area of the channel portion located between the first inlet and the reservoir chamber is between about 80% and about 150% of the cross-sectional area of an opening or channel portion into the mixing space empties. As a result of this extensive omission of cross-sectional tapers downstream of the reservoir chamber, it is also possible to apply more viscous components with comparatively low discharge forces.

Zudem wird es bevorzugt, wenn der zwischen dem ersten Einlass und der Reservoirkammer gelegene Kanalabschnitt in axialer Richtung einer Öffnung oder einem (weiteren) Kanalabschnitt gegenüberliegt, die bzw. der in den Mischraum mündet. Auch der Verzicht auf Umlenkungen bzw. deren Minimierung in dem zwischen dem Einlass und dem Mischraum gelegenen Kanal minimiert den Strömungswiderstand. Alternativ hierzu kann der zwischen dem ersten Einlass und der Reservoirkammer gelegene Kanalabschnitt in axialer Richtung zu einer Öffnung oder einem (weiteren) Kanalabschnitt, die bzw. der in den Mischraum mündet, versetzt angeordnet sein.In addition, it is preferred if the channel section located between the first inlet and the reservoir chamber faces in the axial direction an opening or a (further) channel section which opens into the mixing chamber. The elimination of deflections or their minimization in the channel located between the inlet and the mixing chamber minimizes the flow resistance. Alternatively, the channel section located between the first inlet and the reservoir chamber may be arranged offset in the axial direction to an opening or a (further) channel section which opens into the mixing chamber.

Wenn der Effekt des Voreilens einer Komponente durch die erfindungsgemäße Gestaltung des Mischers kompensiert wird bzw. minimiert werden soll, wird es bevorzugt, wenn der Kanal, der den zweiten Einlass mit dem Mischraum verbindet, möglichst unmittelbar in den Mischraum gelangt, wobei dieser Kanal an der Reservoirkammer vorbeigeführt oder durch diese hindurchgeleitet werden kann. Für von 1:1 verschiedene Mischungsverhältnisse wird es zudem bevorzugt, wenn die Querschnittsfläche dieses zweiten Kanals kleiner als die des Kanalabschnitts zwischen dem ersten Einlass und der Reservoirkammer ist.If the effect of the lead of a component is compensated for or minimized by the design of the mixer according to the invention, it is preferred if the channel connecting the second inlet to the mixing space connects, as directly as possible passes into the mixing chamber, said channel can be passed to the reservoir chamber or passed therethrough. For mixing ratios other than 1: 1, it is also preferred if the cross-sectional area of this second channel is smaller than that of the channel portion between the first inlet and the reservoir chamber.

Um das Risiko einer Kreuzkontamination weiter zu minimieren, wird es bevorzugt, wenn die zwischen den Stutzen der Einlässe vorgesehene Trennwand über diese Stutzen in Richtung zu der Kartusche hinausragt. Selbst wenn bei einem Ausbringen von Komponenten vor Beginn des ersten Mischungsvorgangs Reste der Komponenten an den Auslassstutzen der Kartuschen vorhanden sind, können diese aufgrund der Trennwand nicht die Einlassstutzen des Mischers verschmutzen oder kontaminieren. Gleiches gilt, wenn ein bereits benutzter Mischer abgenommen und ein neuer Mischer auf die Kartusche aufgesetzt wird. Unabhängig von dem Positionierungselement trägt auch die Trennwand dazu bei, dass der Mischer nicht in beliebiger Position auf die Kartusche aufgesetzt werden kann.In order to further minimize the risk of cross-contamination, it is preferred that the partition wall provided between the sockets of the inlets extends beyond these sockets in the direction of the cartridge. Even if components are dispensed with components prior to the start of the first mixing operation at the outlet ports of the cartridges, they can not pollute or contaminate the inlet ports of the mixer because of the partition wall. The same applies if an already used mixer removed and a new mixer is placed on the cartridge. Regardless of the positioning element also contributes to the partition that the mixer can not be placed in any position on the cartridge.

Nach einer besonders bevorzugten Ausführungsform der Erfindung besteht der Mischer aus genau zwei Bauteilen, nämlich einem Gehäuse und einem Einsatz, der axial gesichert und relativ zu dem Gehäuse drehbar in diesem aufgenommen ist. Das Gehäuse bildet dabei den insbesondere zylindrischen Mischraum und weist einen sich gegenüber dem Mischraum aufweitenden Bereich auf, der den Ankopplungsabschnitt bildet. Dieser aufgeweitete Bereich des Gehäuses kann mit dem Außengewinde versehen sein, über welches der Mischer mit der Kartusche fest verbindbar ist. Durch die Drehbarkeit des Einsatzes relativ zu dem Gehäuse kann eine Verriegelung des Mischers an der Kartusche durch Aufschrauben erfolgen, auch wenn zuvor mittels des Positionierungselements der Einsatz des Mischers relativ zu der Kartusche ausgerichtet ist. Dies erlaubt es auch, dass während des Aufschraubens des Mischers auf die Kartusche die Einlassstutzen des Mischers und die Auslassstutzen der Kartusche ineinander eingreifen. Vorzugsweise werden hierzu die Einlassstutzen des Mischers in die Auslassstutzen der Kartusche eingesteckt.According to a particularly preferred embodiment of the invention, the mixer consists of exactly two components, namely a housing and an insert, which is axially secured and rotatably received relative to the housing in this. In this case, the housing forms the, in particular, cylindrical mixing space and has an area widening in relation to the mixing space, which area forms the coupling section. This widened region of the housing can be provided with the external thread, via which the mixer can be firmly connected to the cartridge. Due to the rotatability of the insert relative to the housing, a locking of the mixer to the cartridge can take place by screwing on, even if the insert of the mixer is previously aligned relative to the cartridge by means of the positioning element. This also allows that while unscrewing the Mixer on the cartridge, the inlet ports of the mixer and the outlet of the cartridge interlock. For this purpose, the inlet ports of the mixer are preferably inserted into the outlet of the cartridge.

Die Abdichtung zwischen den beiden Bauteilen des Mischers kann axial und/oder radial erfolgen. Die axiale Abdichtung mit zwei in Längsrichtung des Mischers gesehen hintereinander anliegenden Dichtbereichen des Gehäuses bzw. des Einsatzes hat den Vorteil, dass die Dichtwirkung bei Anziehen der Gewindeverbindung zu der Kartusche verbessert wird. Der Einsatz des Mischers kann somit zunächst frei in dem Gehäuse drehbar sein und die Dichtfunktion tritt erst nach der Montage des Mischers an der Kartusche (vollständig) ein. Die radiale Abdichtung hat den Vorteil, dass hierfür z.B. eine radiale Nut und ein umlaufender radialer Steg genutzt werden können, die zur frei drehbaren Verbindung der beiden Bauteile des Mischers vorgesehen sein können.The seal between the two components of the mixer can be axial and / or radial. The axial seal with two sealing regions of the housing or of the insert lying successively in the longitudinal direction of the mixer has the advantage that the sealing effect when tightening the threaded connection to the cartridge is improved. The use of the mixer can thus initially be freely rotatable in the housing and the sealing function only (fully) occurs after the assembly of the mixer to the cartridge. The radial seal has the advantage that for this purpose e.g. a radial groove and a circumferential radial web can be used, which can be provided for freely rotatable connection of the two components of the mixer.

Bei Kartuschensystemen ist es üblich, nach dem Mischvorgang den Mischer an der Kartusche befestigt zu belassen, wobei die sich noch in dem Mischer befindlichen Komponenten in dem Mischer miteinander reagieren und aushärten können. Der Mischer bildet auf diese Weise einen Verschluss für die Kartusche, der vor dem erneuten Gebrauch der Kartusche mit einem neuen Mischer abgenommen werden kann. Durch die erfindungsgemäße Gewindeverbindung zwischen dem Mischer und der Kartusche muss das Gehäuse des Mischers aus dem Gewindering der Kartusche herausgeschraubt werden. Gleichzeitig ist der Einsatz des Mischers jedoch weiterhin über das Positionierungselement und die Einlassstutzen drehfest mit der Kartusche verbunden. Das Abschrauben des Mischers setzt daher eine relative Drehbewegung zwischen dem Einsatz des Mischers und dem Gehäuse des Mischers voraus, wobei eine solche Relativbewegung im ausgehärteten Zustand der Komponenten erschwert wird, wenn das Mischerelement, beispielsweise eine Mischhelix, einstückig mit dem Einsatz ausgebildet ist.In cartridge systems, it is customary to leave the mixer attached to the cartridge after mixing, whereby the components still in the mixer can react and harden in the mixer. The mixer thus forms a closure for the cartridge, which can be removed before re-use of the cartridge with a new mixer. The inventive threaded connection between the mixer and the cartridge, the housing of the mixer must be unscrewed from the threaded ring of the cartridge. At the same time, however, the use of the mixer is still connected via the positioning element and the inlet nozzle rotatably connected to the cartridge. The unscrewing of the mixer therefore requires a relative rotational movement between the use of the mixer and the housing of the mixer, such a relative movement in the cured state of the components is difficult, when the mixer element, for example a mixing helix, is formed integrally with the insert.

Es wird daher bevorzugt, wenn der Einsatz des Mischers das Mischelement, die beiden Einlässe und das Positionierungselement als ein einstückiges Bauteil aufweist, wobei das Mischerelement über eine Sollbruchstelle von den beiden Einlässen und dem Positionierungselement abtrennbar ist.It is therefore preferred if the use of the mixer has the mixing element, the two inlets and the positioning element as a one-piece component, wherein the mixer element can be separated via a predetermined breaking point of the two inlets and the positioning element.

Die Erfindung wird nachfolgend anhand eines Ausführungsbeispiels und unter Bezugnahme auf die Zeichnungen näher erläutert.The invention will be explained in more detail using an exemplary embodiment and with reference to the drawings.

Es zeigen schematisch:

Fig. 1
einen Längsschnitt durch ein Kartuschensystem nach einer ersten Ausführungsform der Erfindung,
Fig. 2
in Perspektivansicht das Kartuschensystem nach Fig. 1,
Fig. 3
in Perspektivansicht ein Detail des Kartuschensystems nach Fig. 1,
Fig. 4
in Perspektivansicht die Komponenten eines erfindungsgemäßen Mischers für das Kartuschensystem nach Fig. 1,
Fig. 5
in teilweise geschnittener Ansicht einen erfindungsgemäßen Mischer für das Kartuschensystem nach Fig. 1 nach einer zweiten Ausführungsform
Fig. 6
in Perspektivansicht die Komponenten des Mischers nach Fig. 5,
Fig. 7
in einem Längsschnitt ein Detail des Kartuschensystems,
Fig. 8
in Schnittansicht das Kartuschensystem,
Fig. 9
in Perspektivansicht ein einstückiges Verschlusselement,
Fig. 10
in Perspektivansicht das Verschlusselement nach Fig. 9,
Fig. 11
in Schnittansicht einen Ausbringkolben mit Drehverschluss,
Fig. 12
in Perspektivansicht den Drehverschluss nach Fig. 11,
Fig. 13
in Perspektivansicht den Ausbringkolben nach Fig. 11,
Fig. 14
in Perspektivansicht die Komponenten eines weiteren Ausbringkolbens mit Drehverschluss,
Fig. 15
in Schnittansicht den geöffneten Ausbringkolben nach Fig. 14,und
Fig. 16
in Schnittansicht den geschlossenen Ausbringkolben nach Fig. 14
Fig. 17
in Perspektivansicht ein Kartuschensystem für ein Mischungsverhältnis der Komponenten von 1:1.
They show schematically:
Fig. 1
a longitudinal section through a cartridge system according to a first embodiment of the invention,
Fig. 2
in perspective view the cartridge system after Fig. 1 .
Fig. 3
in perspective view a detail of the cartridge system Fig. 1 .
Fig. 4
in perspective view of the components of a mixer according to the invention for the cartridge system according to Fig. 1 .
Fig. 5
in a partially sectioned view of a mixer according to the invention for the cartridge system Fig. 1 according to a second embodiment
Fig. 6
in perspective view the components of the mixer Fig. 5 .
Fig. 7
in a longitudinal section a detail of the cartridge system,
Fig. 8
in sectional view the cartridge system,
Fig. 9
in perspective view an integral closure element,
Fig. 10
in perspective view of the closure element after Fig. 9 .
Fig. 11
in sectional view a dispensing piston with screw cap,
Fig. 12
in perspective view the screw cap after Fig. 11 .
Fig. 13
in perspective view the dispensing piston Fig. 11 .
Fig. 14
in perspective view, the components of another dispensing piston with screw cap,
Fig. 15
in sectional view the opened dispensing piston Fig. 14 ,and
Fig. 16
in sectional view the closed dispensing piston Fig. 14
Fig. 17
in perspective view, a cartridge system for a mixing ratio of the components of 1: 1.

Das in den Fig. 1 bis 3 dargestellte Kartuschensystem besteht im Wesentlichen aus einem Mischer 1 und einer Doppelkartusche, die durch zwei Behälter 2a, 2b gebildet ist, welche einstückig miteinander verbunden sind. In jedem der beiden Behälter 2a, 2b ist jeweils ein Ausbringkolben 3a bzw. 3b zum Ausbringen der in den Behältern aufgenommenen Komponenten vorgesehen. Die Ausbringkolben können über eine nicht dargestellte Vorrichtung innerhalb der Behälter bewegt werden. Auf der den Kolben 3a, 3b gegenüberliegenden Seite sind die Behälter jeweils mit einem Auslassstutzen 4a, 4b versehen.That in the Fig. 1 to 3 shown cartridge system consists essentially of a mixer 1 and a double cartridge, which is formed by two containers 2a, 2b, which are integrally connected to each other. In each of the two containers 2 a, 2 b, a dispensing piston 3 a and 3 b is respectively provided for discharging the components received in the containers. The dispensing piston can be moved via a device, not shown, within the container become. On the side opposite the pistons 3a, 3b, the containers are each provided with an outlet nozzle 4a, 4b.

Wenn die beiden Behälter 2a, 2b wie in Fig. 1 dargestellt unterschiedlich hoch (lang in axialer Richtung der Behälter) sind, kann die in dem höheren Behälter (2a in Fig. 1) aufgenommene Komponente schneller in den Mischer 1 strömen, weil entsprechende Kanal 4a kürzer ist.If the two containers 2a, 2b as in Fig. 1 shown differently high (long in the axial direction of the container), in the higher container (2a in Fig. 1 ) absorbed component faster in the mixer 1, because corresponding channel 4a is shorter.

Die Auslassstutzen 4a, 4b werden von einem auf der stirnseitigen Abschlusswand der Doppelkartusche vorgesehenen Ring 5 umgeben, der auf seiner
Innenseite ein Gewinde 6 trägt. Wie auch aus Fig. 1 ersichtlich ist, stehen die Auslassstutzen 4a, 4b (in Fig. 1 nach oben) über den Ring 5 hervor. Die Auslassstutzen 4a, 4b sind voneinander beabstandet, so dass zwischen diesen ein in Fig. 1 erkennbarer Spalt bzw. Freiraum verbleibt. Auf der dem Ring 5 abgewandten Seite der Kartusche kann ein Flansch oder dgl. vorgesehen sein, um die Kartusche in einem geeigneten Ausbringgerät zu befestigen.The outlet 4 a, 4 b are surrounded by a provided on the end-side end wall of the double cartridge ring 5, which is on his
Inside a thread 6 carries. As well as out Fig. 1 it can be seen, are the outlet nozzle 4a, 4b (in Fig. 1 to the top) over the ring 5. The outlet ports 4a, 4b are spaced apart, so that between them an in Fig. 1 recognizable gap or free space remains. On the side facing away from the ring 5 of the cartridge, a flange or the like. Be provided to secure the cartridge in a suitable dispensing device.

Wie aus der vergrößerten Darstellung der Fig. 3 ersichtlich ist, erstreckt sich die in den Fig. 1 und 2 obere Stirnwand teilweise über die beiden zylindrischen Behälter 2a, 2b hinaus, so dass der Ring 5 durch einen Boden geschlossen ist, der von den beiden Auslassstutzen 4a, 4b durchbrochen wird und zudem eine Positionierungsöffnung 7 aufweist, welche in der in Fig. 3 gezeigten Ausführungsform bspw. trapezförmig ist. Alternativ kann der Querschnitt auch rechteckig oder dreieckig sein.As from the enlarged view of Fig. 3 it can be seen that extends into the Fig. 1 and 2 upper end wall partially beyond the two cylindrical containers 2a, 2b, so that the ring 5 is closed by a bottom, which is pierced by the two outlet 4 a, 4 b and also has a positioning opening 7, which in the in Fig. 3 shown embodiment, for example. Trapezoidal. Alternatively, the cross section may also be rectangular or triangular.

Der Mischer 1 ist ein sogenannter statischer Mischer, d.h. er besitzt kein aktiv angetriebenes Mischerelement. In den Ausführungsformen nach den Fig. 4 bis 6 ist der Mischer 1 jeweils aus zwei Bauteilen aufgebaut, nämlich einem Mischergehäuse 8 und einem Einsatz 9, der in dem Gehäuse 8 in axialer Richtung fest, jedoch drehbar gehalten ist. Dies kann beispielsweise mittels einer umlaufenden Nut in dem Gehäuse 8 erfolgen, in welche ein wulstartiger Vorsprung des Einsatzes 9 einrastet, wie dies in Fig. 5 angedeutet ist.The mixer 1 is a so-called static mixer, ie it has no actively driven mixer element. In the embodiments according to the 4 to 6 the mixer 1 is composed of two components, namely a mixer housing 8 and an insert 9, in the housing 8 in the axial Direction fixed, but is held rotatable. This can be done for example by means of a circumferential groove in the housing 8, in which a bead-like projection of the insert 9 engages, as in Fig. 5 is indicated.

Das Gehäuse 8 des Mischers 1 besteht aus einem länglichen zylindrischen Rohr, welches sich an seinem Auslassende 10 verjüngen kann. Dieser längliche zylindrische Abschnitt des Gehäuses 8 bildet in seinem Inneren den eigentlichen Mischraum. Das dem Auslassende 10 gegenüberliegenden Ende des Gehäuses 8 ist gegenüber diesem zylindrischen Bereich aufgeweitet und als ein Ankopplungsabschnitt ausgebildet, der zur Befestigung des Mischers 1 an der Kartusche (Behälter 2a, 2b) dient. Hierzu ist der Ankopplungsabschnitt mit einem Außengewinde 11 versehen, welches nach der Ausführungsform nach den Fig. 2 bis 4 durch mehrere Gewindeabschnitte gebildet wird, während in der Ausführungsform nach den Fig. 5 und 6 ein sich überlappendes Gewinde vorgesehen ist. Zudem kann angrenzend an das Gewinde 11 ein profilierter Bereich vorgesehen sein, der die Betätigung des Mischers 1, insbesondere das Einschrauben des Mischers 1 in den Ring der Kartusche, erleichtert.The housing 8 of the mixer 1 consists of an elongated cylindrical tube, which can taper at its outlet end 10. This elongated cylindrical portion of the housing 8 forms the actual mixing chamber in its interior. The outlet end 10 opposite end of the housing 8 is widened with respect to this cylindrical portion and formed as a coupling portion, which serves for attachment of the mixer 1 to the cartridge (container 2a, 2b). For this purpose, the coupling portion is provided with an external thread 11, which according to the embodiment of the Fig. 2 to 4 is formed by a plurality of threaded portions, while in the embodiment of the FIGS. 5 and 6 an overlapping thread is provided. In addition, a profiled area may be provided adjacent to the thread 11, which facilitates the operation of the mixer 1, in particular the screwing of the mixer 1 in the ring of the cartridge.

Der Einsatz 9 weist eine Platte 12 auf, an der ein Mischerelement 13, beispielsweise eine Mischhelix, sowie Einlassstutzen 14a, 14b ausgebildet sind. Die Größe der Einlassstutzen 14a, 14b ist so bemessen, dass diese in die Auslassstutzen 4a bzw. 4b der Kartusche eingesteckt werden können. Hierzu sind die Einlassstutzen 14a, 14b voneinander beabstandet, wobei zusätzlich zwischen den Einlassstutzen eine Trennwand 15 vorgesehen ist, die von der Platte 12 weiter vorsteht als die Einlassstutzen 14a, 14b. Die Trennwand 15 kann somit in den Spalt bzw. Freiraum zwischen den Auslassstutzen 4a, 4b eingreifen und verhindert so, dass bspw. Komponenten aus dem Auslassstutzen 4a zu dem Einlassstutzen 14b gelangen bzw. umgekehrt.The insert 9 has a plate 12, on which a mixer element 13, for example a mixing helix, as well as inlet ports 14a, 14b are formed. The size of the inlet pipe 14a, 14b is sized so that they can be inserted into the outlet 4 a and 4 b of the cartridge. For this purpose, the inlet ports 14a, 14b are spaced from each other, wherein in addition between the inlet port, a partition wall 15 is provided which protrudes from the plate 12 further than the inlet ports 14a, 14b. The partition wall 15 can thus engage in the gap or clearance between the outlet stubs 4a, 4b and thus prevents, for example, components from the outlet stub 4a from reaching the inlet stub 14b or vice versa.

In der dargestellten Ausführungsform ist an einem Ende der Trennwand 15 ein gegenüber dieser verlängertes Positionierungselement 16 ausgebildet, welches einen etwa dreieckigen oder z.B. trapezförmigen Querschnitt aufweist und somit passgenau in die Positionierungsöffnung 7 der Kartusche einsteckbar ist. Das Positionierungselement 16 ragt dabei nicht nur über die Trennwand 15 und die Einlassstutzen 14a, 14b hinaus, sondern steht auch über das Gehäuse 8 des Mischers 1 in Richtung zu der Kartusche hervor. Dies bewirkt, dass bei einem Aufsetzen des Mischers 1 auf die Kartusche zunächst das Positionierungselement 16 in den durch den Ring 5 umgrenzenden Raum eintritt, ohne dass die übrigen Komponenten des Mischers 1 die Kartusche oder deren Auslassstutzen berühren. Erst wenn das Positionierungselement 16 in die Positionierungsöffnung 7 der Kartusche eingreift, kann der Mischer 1 soweit auf die Kartusche aufgesteckt werden, dass das Gewinde 11 des Mischers in das Gewinde 6 der Kartusche eingreift. Durch Einschrauben des Gehäuses 8 des Mischers 1 in den Ring 5 der Kartusche kommen dann auch die Auslassstutzen 4a, 4b und die Einlassstutzen 14a, 14b miteinander in Eingriff. Das Positionierungselement 16 tritt dabei mit seinem freien Ende durch die Öffnung 7 hindurch, so dass die exakte Ausrichtung des Mischers auch von außen kontrolliert werden kann. Hierzu kann das freie Ende des Positionierungselements 16 eingefärbt oder in anderer Weise markiert sein.In the illustrated embodiment, at one end of the partition wall 15 there is formed an elongated positioning member 16 which is an approximately triangular or e.g. Having trapezoidal cross-section and thus accurately fit into the positioning hole 7 of the cartridge can be inserted. The positioning element 16 not only projects beyond the dividing wall 15 and the inlet ports 14a, 14b, but also protrudes beyond the housing 8 of the mixer 1 in the direction of the cartridge. This has the effect that, when the mixer 1 is placed on the cartridge, the positioning element 16 first enters the space delimiting the ring 5 without the remaining components of the mixer 1 touching the cartridge or its outlet nozzle. Only when the positioning element 16 engages in the positioning opening 7 of the cartridge, the mixer 1 can be plugged onto the cartridge so far that the thread 11 of the mixer engages in the thread 6 of the cartridge. By screwing the housing 8 of the mixer 1 into the ring 5 of the cartridge, the outlet ports 4a, 4b and the inlet ports 14a, 14b then come into engagement with each other. The positioning element 16 occurs with its free end through the opening 7, so that the exact alignment of the mixer can also be controlled from the outside. For this purpose, the free end of the positioning element 16 may be colored or marked in another way.

Um das Einführen des Positionierungselements 16 in die Positionierungsöffnung 7 zu erleichtern, kann das Positionierungselement 16 wie dargestellt an seinem freien Ende abgeschrägt sein bzw. konisch zulaufen. Zudem können in dem Boden des Rings 6, Rippen oder dgl. Elemente vorgesehen sein, die das Positionierungselement 16 in Richtung zu der Positionierungsöffnung 7 führen. In den dargestellten Ausführungsbeispielen sind das Positionierungselement 16 an dem Mischer 1 und die entsprechende Öffnung 7 an der Kartusche ausgebildet. Die erfindungsgemäßen Vorteile treten jedoch auch auf, wenn das Positionierungselement an der Kartusche und die Öffnung an dem Mischer ausgebildet sind.In order to facilitate insertion of the positioning element 16 into the positioning opening 7, the positioning element 16 can be beveled or tapered at its free end, as shown. In addition, elements may be provided in the bottom of the ring 6, ribs or the like, which guide the positioning element 16 in the direction of the positioning opening 7. In the illustrated embodiments, the positioning member 16 are formed on the mixer 1 and the corresponding opening 7 on the cartridge. However, the advantages of the invention also occur when the Positioning element on the cartridge and the opening are formed on the mixer.

Auf der dem Positionierungselement 16 gegenüberliegenden Seite der Platte 12 kann eine weitere Trennwand 17 vorgesehen sein, welche in der dargestellten Ausführungsform senkrecht zu der ersten Trennwand 15 ausgerichtet ist, so dass die Trennwand 17 die durch die Einlassstutzen 14a, 14b einströmenden Komponenten jeweils in zwei Ströme aufteilt. Das Mischerelement 13 ist dabei nach einer bevorzugten Ausführungsform über eine Sollbruchstelle mit der Trennwand 17 verbunden. Dies ist insbesondere wichtig bei gebrauchten Mischern, in deren Mischraum das 2-Komponenten Material ausgehärtet ist und die wie üblich als Verschluss bis zur nächsten Anwendung auf der Kartusche verbleiben. Wegen der starren einteiligen Verbindung zwischen Mischerhelix und Einlasskanälen ist es vorteilhaft, die Sollbruchstelle in der Mischerhelix in der Nähe der Einlasskanäle vorzusehen, um ein leichtes Abschrauben des Mischers zu gewährleisten und die Helix nicht gegen das polymerisierte Material schrauben zu müssen.On the side opposite the positioning element 16 side of the plate 12, a further partition wall 17 may be provided which is aligned in the illustrated embodiment perpendicular to the first partition wall 15, so that the partition wall 17, the inflowing through the inlet ports 14a, 14b components each into two streams divides. The mixer element 13 is connected in a preferred embodiment via a predetermined breaking point with the partition wall 17. This is particularly important in used mixers, in the mixing chamber of the 2-component material is cured and remain as usual as closure until the next application on the cartridge. Because of the rigid one-piece connection between mixer helix and inlet channels, it is advantageous to provide the predetermined breaking point in the mixer helix in the vicinity of the inlet channels to ensure easy unscrewing of the mixer and not having to screw the helix against the polymerized material.

Wie insbesondere aus der Darstellung der Fig. 5 ersichtlich ist, verläuft ausgehend von dem Einlassstutzen 14a für die volumenmäßig kleinere Komponente aus dem Behälter 2a ein zylindrischer Kanal 18 in Richtung zu dem Mischraum. Die Trennwand 17 kann sich dabei teilweise in den Kanal 18 und/oder den Kanalabschnitt 19a hinein erstrecken.As in particular from the representation of Fig. 5 it can be seen, runs from the inlet port 14a for the smaller volume component from the container 2a, a cylindrical channel 18 in the direction of the mixing chamber. The partition 17 may partially extend into the channel 18 and / or the channel portion 19a.

Nach dem Einlassstutzen 14b für die volumenmäßig größere Komponente aus dem Behälter 2b weitet sich das Volumen stromabwärts der Platte 12 dagegen zu einer Reservoirkammer auf, die eine größere Querschnittsfläche als der entsprechende Einlassstutzen 14b aufweist. Dabei bildet der Einlassstutzen 14b einen ersten Kanalabschnitt 19a und die Reservoirkammer 19b einen vergrößerten Kanalabschnitt. Stromabwärts der Reservoirkammer 19b kann eine Öffnung 19c oder ein weiterer Kanalabschnitt vorgesehen sein, die bzw. der in den Mischraum mündet.After the inlet port 14b for the larger volume component from the container 2b, however, the volume downstream of the plate 12 widens to a reservoir chamber having a larger cross-sectional area than the corresponding inlet port 14b. In this case, the inlet nozzle 14b forms a first channel section 19a and the reservoir chamber 19b an enlarged channel section. Downstream of the reservoir chamber 19b can an opening 19c or another channel section may be provided which opens into the mixing space.

Die Größe der Reservoirkammer 19b kann dabei variabel durch die Position einer Wand 20 verändert werden, die sich in der dargestellten Ausführungsform senkrecht zu der Trennwand 17 erstreckt. Soweit die durch den Einlassstutzen 14b eintretende Komponente zum Voreilen neigt, kann ein voreilender Anteil dieser Komponente zunächst in der Reservoirkammer 19b aufgefangen werden, bevor die weiter nachfließende Komponente zusammen mit der anderen Komponente in den Mischraum gelangt. Wie aus Fig. 5 ersichtlich ist, kann die durch den Einlassstutzen 14b eintretende Komponente ohne weitere Umlenkung aus der Reservoirkammer 19b in den Mischraum gelangen. Dies minimiert den Strömungswiderstand.The size of the reservoir chamber 19b can be varied variably by the position of a wall 20, which extends perpendicular to the partition 17 in the illustrated embodiment. As far as the entering through the inlet port 14b component tends to advance, a leading portion of this component can first be collected in the reservoir chamber 19b before the further inflowing component passes together with the other component in the mixing chamber. How out Fig. 5 can be seen, the entering through the inlet port 14b component without further deflection from the reservoir chamber 19b get into the mixing chamber. This minimizes flow resistance.

Den in den Fig. 4 bis 6 dargestellte statische Mischer 1 weist einige Vorteile gegenüber bekannten statischen Mischern auf. So ist zunächst durch die Gewindeverbindung 6, 11 mit der Kartusche eine sichere und feste Arretierung möglich. Zudem kann der Mischer durch Abschrauben von der Kartusche aktiv von dieser gelöst und abgehoben werden. Die zweiteilige Bauweise des Mischers 1 bringt zudem Kostenvorteile mit sich. Die freie Drehbarkeit des Einsatzes 9 in dem Mischergehäuse 8 ermöglicht dabei eine einfache und kostengünstige Montage, bei der anders als bei bekannten Mischern nicht auf eine Ausrichtung der Komponenten zueinander geachtet werden muss. Die Trennwand 15 sowie die gegenüber dem Ring 5 vorstehenden Auslassstutzen 4a, 4b verhindern zudem weitestgehend Verschmutzungen oder Kreuzkontaminationen.The in the 4 to 6 illustrated static mixer 1 has some advantages over known static mixers. Thus, first by the threaded connection 6, 11 with the cartridge a secure and secure locking possible. In addition, the mixer by unscrewing the cartridge can be actively solved by this and lifted. The two-part design of the mixer 1 also brings cost advantages. The free rotation of the insert 9 in the mixer housing 8 allows a simple and cost-effective installation, in which, unlike in known mixers, it is not necessary to ensure that the components are aligned with one another. The partition wall 15 and the outlet 5 a, 4 b protruding from the ring 5 also largely prevent soiling or cross contamination.

Durch unterschiedliche Größe oder Geometrie des Positionierungselementes 16 sowie der korrespondierenden Öffnung 7 im Boden des Gewindekragens 5 kann eine eindeutige Zuordnung zwischen bestimmten Kartuschen und zugehörigen Mischern definiert werden. Dies ist insbesondere dann vorteilhaft, um unterschiedliche Mischungsverhältnisse der Komponenten unterscheiden zu können. So kann beispielsweise ein Mischer für das Mischungsverhältnis 1:1 der Komponenten nicht auf eine Kartusche für ein Mischungsverhältnis von bspw. 1:10 aufgesetzt werden und umgekehrt.By different size or geometry of the positioning element 16 and the corresponding opening 7 in the bottom of the threaded collar 5 can be a clear association between certain cartridges and associated Blenders are defined. This is particularly advantageous in order to distinguish different mixing ratios of the components can. For example, a mixer for the mixing ratio 1: 1 of the components can not be placed on a cartridge for a mixing ratio of, for example, 1:10 and vice versa.

In den Fig. 5 und 8 ist weiter in dem Einlassstutzen 14a eine Querschnittsverjüngung ausgebildet, die bei gleichem Außendurchmesser der beiden Einlassstutzen das von 1:1 verschiedene Mischungsverhältnis der Komponenten berücksichtigt.In the Fig. 5 and 8th is further formed in the inlet port 14a a cross-sectional taper, which takes into account the 1: 1 different mixing ratio of the components with the same outer diameter of the two inlet ports.

In Fig. 7 ist die Abdichtung zwischen den beiden Bauteilen des Mischers im Detail dargestellt. Hierbei ist eine Konusdichtung im Mischer zwischen der Innenseite des Gehäuses 8 und der Außenseite des Einsatzes 9 vorgesehen. Um diese beiden Bauteile frei drehbar miteinander zu verbinden ist eine Rastverbindung mit einer umlaufenden Nut 21 in dem Gehäuse und einem umlaufenden Steg 22 in dem Einsatz vorgesehen. Die Dichtung weist entsprechende konische Dichtflächen 23, 24 auf, die in Fig. 7 oberhalb der Nut bzw. des Stegs auf der Innenseite des Gehäuses 8 und der Außenseite des Einsatzes 9 ausgebildet sind. Beim Einschrauben des Mischers wird die aus Gründen der erforderlichen freien Drehbarkeit zunächst umlaufend offene Konusdichtung in Endposition umlaufend form- und kraftschlüssig geschlossen.In Fig. 7 the seal between the two components of the mixer is shown in detail. Here, a cone seal in the mixer between the inside of the housing 8 and the outside of the insert 9 is provided. In order to connect these two components freely rotatable with each other, a latching connection is provided with a circumferential groove 21 in the housing and a circumferential ridge 22 in the insert. The seal has corresponding conical sealing surfaces 23, 24, which in Fig. 7 above the groove or the web on the inside of the housing 8 and the outside of the insert 9 are formed. When screwing in the mixer, the reasons for the required free rotation first circumferentially open cone seal in the final position circumferentially positive and non-positive closed.

Fig. 8 zeigt eine weitere Schnittansicht des Kartuschensystems, wobei der Fall dargestellt ist, dass ein Benutzer versucht, den Mischer falsch (verkippt) auf die Kartusche aufzusetzen. Ein wichtiges Merkmal des erfindungsgemäßen Kartuschensystems ist die Vermeidung einer unerwünschten Verschleppung von Katalysatorkomponente und Basekomponente und zur jeweils anderen Pastenkomponente und zu deren Kontamination führen könnte. Dies könnte auftreten durch zufälliges, unerwünschtes Einführen der Positionierungszunge zunächst in den einen, dann in den anderen Kanal oder durch Berührung der Ein- und Auslasskanäle von Kartusche und Mischer beim ungünstigen verkippten Aufsetzen in der falschen Position, oder analog beim verkippten Wiederaufsetzen eines Verschlussstopfens. Fig. 8 shows another sectional view of the cartridge system, wherein the case is shown that a user tries to put the mixer wrong (tilted) on the cartridge. An important feature of the cartridge system according to the invention is the avoidance of unwanted carry-over of catalyst component and base component and could lead to the respective other paste component and their contamination. This could be due to accidental, unwanted insertion of the positioning tab first in one, then in the other channel or by touching the inlet and outlet channels of the cartridge and mixer in the unfavorable tilted placement in the wrong position, or analogous to the tilted replacement of a sealing plug.

Diese ungünstigen Konstellationen werden durch das Zusammenspiel und die geometrische Gestaltung und Anordnung von Positionierungszunge, Gewinde und Trennwand vermieden, wie dies in Fig. 8 dargestellt ist. Hierbei ist erfindungsgemäß die Positionierungszunge am Mischer (bzw. an einem Verschluss-Stopfen) so gestaltet, dass sie sich nicht in die Auslass-Kanäle einführen lässt. Weiter ist die Trennwand so dimensioniert, dass sie zwischen den Auslass-Kanälen der Kartusche nur geringe Kippwinkel zulässt. An den Auslasskanälen der Kartusche können ggf. Konturen angebracht sein, die das Spiel für die eingesetzte Trennwand im Hinblick auf ungünstige Kippwinkel weiter einschränken. Ein Verschluss-Stopfen kann einen zusätzlichen hülsenformigen Kragen aufweisen (an der Stelle, wo sich beim Mischer das Gewinde befindet) und vermeidet somit auch ungünstige Kippwinkel.These unfavorable constellations are avoided by the interaction and the geometric design and arrangement of positioning tongue, thread and partition, as in Fig. 8 is shown. Here, according to the invention, the positioning tongue on the mixer (or on a closure plug) is designed so that it can not be inserted into the outlet channels. Furthermore, the dividing wall is dimensioned such that it allows only small tilt angles between the outlet channels of the cartridge. If necessary, contours can be attached to the outlet channels of the cartridge, which further limit the play for the partition used with regard to unfavorable tilt angles. A closure plug may have an additional sleeve-shaped collar (at the point where the thread is located at the mixer) and thus also avoids unfavorable tilt angles.

Unabhängig von den zuvor beschriebenen Merkmalen des Mischers und/oder der Kartusche betrifft die Erfindung auch ein in den Figuren 9 und 10 gezeigtes einstückiges Verschlusselement, welches statt des Mischers 1 auf die eine Doppelkartusche bildenden Behälter 2a, 2b aufgesetzt werden kann. Zum Verschließen der Doppelkartusche sind zwei Stopfen 21 vorgesehen, die abdichtend in die Auslassstutzen 4a bzw. 4b eingesteckt werden können. Die Stopfen sind jeweils über einen Steg 22, der als eine Torsionsfeder wirkt, mit einer Hülse verbunden, die in den Kragen des Auslassendes der Doppelkartusche eingesetzt werden kann. Ein erweiterter Rand der Hülse, der mit einer Rändelung versehen ist, liegt auf der Stirnseite des Kragens auf, wenn das Verschlusselement abdichtend auf die Doppelkartusche aufgesetzt ist.Regardless of the features of the mixer and / or the cartridge described above, the invention also relates to a in the FIGS. 9 and 10 shown one-piece closure element, which instead of the mixer 1 on the double cartridge forming container 2a, 2b can be placed. To close the double cartridge two plugs 21 are provided, which can be inserted sealingly into the outlet 4 a and 4 b. The plugs are each connected via a web 22, which acts as a torsion spring, to a sleeve which can be inserted into the collar of the outlet end of the double cartridge. An extended edge of the sleeve, which is provided with a knurling, rests on the front side of the collar when the closure element is sealingly placed on the double cartridge.

Das Verschlusselement kann in dem Kragen (Ring 5) mittels Rasthaken 23 gesichert werden, die die Gewindesegmente des Innengewindes 6 hintergreifen und damit das Verschlusselement auf der Doppelkartusche verrasten. Zum Lösen des Verschlusselements kann die Hülse mit der Rändelung geringfügig verdreht werden, wobei sich der Steg 22 verwindet, da die Stopfen 21 zunächst weiter in den Auslassstutzen 4a bzw. 4b stecken. Diese Verwindung des als Torsionselement wirkenden Stegs 22 ermöglicht es, dass die Rasthaken außer Eingriff mit den Gewindesegmenten des Innengewindes 6 gebracht werden, so dass das Verschlusselement von der Doppelkartusche abgenommen werden kann.The closure element can be secured in the collar (ring 5) by means of latching hooks 23, which engage behind the thread segments of the internal thread 6 and thus lock the closure element on the double cartridge. To loosen the closure element, the sleeve can be twisted slightly with the knurling, wherein the web 22 twists, since the plug 21 initially stuck in the outlet 4 a and 4 b. This twisting of the web 22 acting as a torsion element makes it possible for the latching hooks to be disengaged from the thread segments of the internal thread 6, so that the closure element can be removed from the double cartridge.

Der Verschlussstopfen weist ähnlich wie der Mischer eine Positionierungszunge 16 auf, die so gestaltet sein kann, dass sie nach Durchtreten durch eine korrespondierende Öffnung in der Kartusche nach außen für den Anwender sichtbar wird. Dies hat den Vorteil einer optischen Sichtkontrolle, ob der Verschluss-Stopfen und/oder die Positionierungszunge sauber eingeführt ist. Das Torsionselement des Verschlussstopfens kann wie in Fig. 9 gezeigt eine radiale S-Form aufweisen, um auch bei kleinen Verschlussstopfen-Durchmessern einen entsprechenden Drehweg zu sichern.The closure plug, similar to the mixer, has a positioning tab 16 which may be configured to be visible to the user after passing through a corresponding opening in the cartridge. This has the advantage of visual visual inspection as to whether the closure plug and / or the positioning tab is properly inserted. The torsion element of the sealing plug can, as in Fig. 9 shown to have a radial S-shape in order to secure a corresponding rotation even with small plug diameter.

Der in Fig. 10 gezeigte Verschlussstopfen ist zudem mit einer Trennwand 17 ausgestattet, die ähnlich wie bei dem Mischer zwischen den Stopfen 21 liegt. In der dargestellten Ausführungsform ist die Trennwand 17 mit Einschnürungen in der Nähe der Stopfen 21 versehen, wodurch das Aufsetzen des Verschlusses ohne ein Verkippen erleichtert wird.The in Fig. 10 also shown sealing plug is equipped with a partition 17 which is similar to the mixer between the plug 21. In the illustrated embodiment, the partition wall 17 is provided with constrictions in the vicinity of the plugs 21, whereby the placement of the closure is facilitated without tilting.

In den Figuren 11 bis 13 ist ein Ausbringkolben mit Dehverschluss dargestellt, der in einem erfindungsgemäßen Kartuschensystem zum Ausbringen der Komponenten aus den Behältern genutzt werden kann. Der Kolben ist hierbei mit einer Entlüftung versehen, die es erlaubt, dass Luft aus dem jeweiligen Behälter austritt, wenn dieser mit der Komponente befüllt ist und der Ausbringkolben eingesetzt wird. Da einige Stoffe dazu neigen, mit der nach dem Befüllen der Kartusche und dem Einsetzen des Kolbens in der Kartusche verbleibenden Restluft zu reagieren, ist man bestrebt, die Restluft möglichst vollständig aus dem Behälter entweichen zu lassen. Etwaige in dem Behälter verbleibende Restluft zwischen dem Kolben und dem in der Kartusche befindlichen Stoff wird auch deshalb als nachteilig empfunden, weil die Restluft ein kompressibles Polster bildet, das die Genauigkeit der Dosierung beim Aufbringen des Stoffes aus der Kartusche erschwert.In the FIGS. 11 to 13 a dispensing piston is shown with a Dehverschluss, which can be used in a cartridge system according to the invention for dispensing the components from the containers. The piston is hereby provided with a vent, which allows air from the respective Tank leaks when it is filled with the component and the delivery piston is used. Since some substances tend to react with the remaining after filling the cartridge and the insertion of the piston in the cartridge residual air, it is anxious to let the residual air escape as completely as possible from the container. Any remaining in the container residual air between the piston and the substance located in the cartridge is also considered to be disadvantageous because the residual air forms a compressible pad that complicates the accuracy of the dosage when applying the substance from the cartridge.

Der in den Figuren 11 bis 13 gezeigte Kolben 100 weist einen Grundkörper 101 auf, der einen mit Dichtmitteln versehene Seitenwand und eine stirnseitige Wand aufweist, in welcher eine Entlüftungsöffnung 102 vorgesehen ist. Diese Entlüftungsöffnung 102 erstreckt sich durch den gesamten Grundkörper hindurch, so dass ein Luftaustausch zwischen der Seite der stirnseitigen Wand (in Förderrichtung gelegen) und der Rückseite des Kolbens 100 möglich ist. In der Entlüftungsöffnung 102 ist dabei ein Verschlusselement 103 drehbar gelagert, wobei durch eine relative Drehung des Verschlusselements 103 in der Entlüftungsöffnung 102 ein Entlüftungskanal geöffnet beziehungsweise geschlossen werden kann. Mit anderen Worten ist es möglich, mit einer Drehung des Verschlusselements 103 die Strömungsverbindung zwischen der in Förderrichtung gelegenen Seite des Kolbens 100 und der rückwärtigen Seite des Kolbens herzustellen beziehungsweise zu unterbinden.The in the FIGS. 11 to 13 shown piston 100 has a base 101, which has a side wall provided with sealing means and an end wall, in which a vent opening 102 is provided. This vent opening 102 extends through the entire base body, so that an air exchange between the side of the end wall (located in the conveying direction) and the back of the piston 100 is possible. A closure element 103 is rotatably mounted in the ventilation opening 102, wherein a ventilation channel can be opened or closed by a relative rotation of the closure element 103 in the ventilation opening 102. In other words, it is possible to establish or prevent the flow connection between the downstream side of the piston 100 and the rear side of the piston with a rotation of the closure element 103.

Hierzu ist auf der Innenfläche der Entlüftungsöffnung 102 ein umlaufender Vorsprung 104 ausgebildet, der in eine entsprechende Nut 105 in dem Verschlusselement 103 eingreift, um diese miteinander zu verrasten. Sowohl der Vorsprung 104 als auch die Nut 105 sind sich jeweils mit Durchbrechungen versehen, die in Überdeckung gebracht werden können um einen Entlüftungskanal freizugeben, bzw. außer Überdeckung gebracht werden können, um den Entlüftungskanal zu verschließen. Die Durchbrechung verläuft dabei durch die hierzu senkrechte Nut 105 hindurch, die geringfügig tiefer als die Durchbrechung ausgebildet sein kann, so dass der Vorsprung 104 die Durchbrechungen sicher verschließen kann.For this purpose, a circumferential projection 104 is formed on the inner surface of the vent opening 102, which engages in a corresponding groove 105 in the closure element 103 in order to lock them together. Both the projection 104 and the groove 105 are each provided with openings, which can be brought into coverage to release a vent channel, or be brought out of coverage can to close the vent channel. The opening extends through the groove 105 perpendicular thereto, which may be formed slightly deeper than the opening, so that the projection 104 can securely close the openings.

Zur Optimierung der Dichtigkeit der Kolben mit Drehverschluss (Austritt von Abformmasse aus dem geschlossenen Entlüftungsventil unter Austragsbedingungen) sind die sternförmigen Entlüftungsschlitze 106 konisch zulaufend gestaltet, so dass die Gesamtquerschnittsfläche auf ein Bruchteil, z.B. auf 1/100, der ursprünglichen Querschnittsfläche reduziert ist. Auf diese Weise kann eingeschlossenen Luft beim Verschließen der Kartusche weiterhin ungehindert ins Freie treten, der Zutritt von Abformmasse zum Entlüftungsventil hin wird jedoch stark erschwert.In order to optimize the tightness of the pistons with rotary closure (discharge of impression material from the closed vent valve under discharge conditions), the star-shaped vent slots 106 are tapered so that the total cross-sectional area is reduced to a fraction, e.g. to 1/100, the original cross-sectional area is reduced. In this way, trapped air can continue to flow unhindered into the open when closing the cartridge, but the access of impression material to the venting valve is made much more difficult.

Eine alternative Ausführungsform eines Ausbringkolbens mit Dehverschluss ist in den Figuren 14 bis 16 ist ein dargestellt, wiederum aus einem Grundkörper 101 und einem Verschlusselement 103 besteht. Zusätzlich ist ein Dichtungsring 107 vorgesehen. In der Ausführungsform der Figuren 14 bis 16 ist nur eine einzige Entlüftungsöffnung 102 zwischen dem Grundkörper 101 und dem Verschlusselement 103 ausgebildet, so dass diese Variante auch bei beengten Platzverhältnissen eingesetzt werden kann. Ein Vergleich der Figuren 15 und 16 zeigt, wie sich die Entlüftungsöffnung 102 abhängig von der Drehstellung des Verschlusselements 103 in dem Grundkörper 101 öffnet (Fig. 15) bzw. schließt (Fig. 16).An alternative embodiment of a Ausbringkolbens with Dehverschluss is in the FIGS. 14 to 16 is a shown, in turn, consists of a base 101 and a closure element 103. In addition, a sealing ring 107 is provided. In the embodiment of the FIGS. 14 to 16 is only a single vent opening 102 formed between the base 101 and the closure element 103, so that this variant can be used even in confined spaces. A comparison of FIGS. 15 and 16 shows how the vent opening 102 opens depending on the rotational position of the closure element 103 in the base body 101 ( Fig. 15 ) or closes ( Fig. 16 ).

Eine Kartusche für ein Mischungsverhältnis der Komponenten von 1:1 ist in Fig. 17 gezeigt. Die beiden Behälter 2a, 2b haben hierbei die gleichen Abmessungen.A cartridge for a mixing ratio of the components of 1: 1 is in Fig. 17 shown. The two containers 2a, 2b have the same dimensions.

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

11
Mischermixer
2a, 2b2a, 2b
Behältercontainer
3a, 3b3a, 3b
Ausbringkolbendispensing piston
4a, 4b4a, 4b
Auslassstutzenoutlet
55
Ringring
66
Gewindethread
77
Positionierungsöffnungpositioning opening
88th
Gehäusecasing
99
Einsatzcommitment
1010
Auslassöffnungoutlet
1111
Gewindethread
1212
Platteplate
1313
Mischerelementmixer element
14a, 14b14a, 14b
Einlassstutzeninlet port
1515
Trennwandpartition wall
1616
Positionierungselementpositioner
1717
Trennwandpartition wall
1818
Kanalchannel
19a19a
erster Kanalabschnittfirst channel section
19b19b
Reservoirkammerreservoir chamber
19c19c
Öffnungopening
2020
Wandwall
2121
StopfenPlug
2222
Steg (Torsionselement)Web (torsion element)
2323
Rasthakenlatch hook
100100
Kolbenpiston
101101
Grundkörperbody
102102
Entlüftungsöffnungvent
103103
Verschlusselementclosure element
104104
Vorsprunghead Start
105105
Nutgroove
106106
Entlüftungsschlitzventing slot
107107
Dichtringseal

Claims (14)

  1. A cartridge system with two containers (2a, 2b), which in each case comprise an outlet connector (4a, 4b) and a joint connecting region for a mixer (1) that is provided with a positioning aperture (7), and with a static mixer (1) with inlet connector (14a, 14b) and a positioning element (16), characterized in that the connecting region comprises a ring (5) with an internal thread (6) surrounding the outlet connector (4a, 4b), and in that the mixer (1) has an external thread (11) wherein the length of the inlet connectors (14a, 14b) of the outlet connectors (4a, 4b) and of the positioning element (16) and the position of the positioning opening (7) are matched to one another in such a manner that on placing the mixer (1) onto the containers (2a, 2b) the positioning element (16) engages in the positioning aperture (7), before the internal thread (6) and the external thread (11) engage into one another, and in that the internal thread (6) and the external thread (11) engage into one another, before the inlet connectors (14a, 14b) and the outlet connectors (4a, 4b) touch one another.
  2. The cartridge system according to Claim 1, characterized in that the outlet connectors (4a, 4b) project over the ring (5) surrounding these.
  3. The cartridge system according to Claim 1 or 2, characterized in that the internal diameters of the two outlet connectors (4a, 4b) are identical, wherein in at least one of the two outlet connectors (4a, 4b) a cylinder core is provided and/or in at least one of the two inlet connectors (14a, 14b) a cross-sectional taper is provided.
  4. A static mixer for a cartridge system according to any one of the Claims 1 to 3, in particular for mixing two components, with a mixing chamber, which extends parallel to a longitudinal axis of the mixer (1) and in which a mixer element (13) is provided, two inlets (14a, 14b) which in each case are in flow connection with the mixing chamber via passages (18, 19a, 19b, 19c) and with a positioning element (16), characterized in that the mixer (1) additionally comprises an external thread (11) for connecting the mixer (1) to a cartridge (2a, 2b), in that the two inlets (14a, 14b) are formed as connectors which are spaced from one another, between which a separating wall (15) is provided, and in that the positioning element (16) projects over the two inlets (14a, 14b) in the direction of the longitudinal axis.
  5. The mixer according to Claim 4, which consists of exactly two components, of which one is a housing (8) forming the mixing chamber and which expands relative to the mixing chamber in the region of the coupling section and the other is an insert (9) which is axially secured and is rotatably received in the housing (8) relative to the same.
  6. The mixer according to Claim 4 or 5 for mixing two components in a mixing ratio that is distinct from 1:1, characterized in that a first inlet (14b) is assigned a reservoir chamber (19b), which is arranged between the first inlet (14b) and the mixing chamber and has a cross-sectional area that is larger than the cross-sectional area of the passage section (19a) between the first inlet (14b) and the reservoir chamber (19b).
  7. The mixer according to Claim 6, characterized in that the cross-sectional area of the passage section (19a) located between the first inlet (14b) and the reservoir chamber (19b) amounts to between 80% and 150% of the cross-sectional area of an aperture (19c) or of a passage section, which opens into the mixing chamber.
  8. The mixer according to Claim 6 or 7, characterized in that the passage section (19a) located between the first inlet (14b) and the reservoir chamber (19b) is located, in the axial direction, opposite to an aperture (19c) or a passage section, which opens into the mixing chamber.
  9. The mixer according to Claim 6 or 7, characterized in that the passage section (19a) located between the first inlet (14b) and the reservoir chamber (19b) is arranged in the axial direction offset from an aperture (19c) or a passage section, which opens into the mixing chamber.
  10. The mixer according to any one of the Claims 6 to 9, characterized in that the passage (18), which connects the second inlet (14a) to the mixing chamber, has a cross-sectional area that is smaller than the cross-sectional area of the passage section (19a) between the first inlet (14b) and the reservoir chamber (19b).
  11. The mixer according to any one of the Claims 4 to 10, characterized in that the separating wall (15) provided between the connectors of the inlets (14a, 14b) projects over these connectors.
  12. The mixer according to any one of the Claims 4 to 11, characterized in that the insert (9) comprises the mixing element (13), the two inlets (14a, 14b) and the positioning element (16), wherein the mixer element (13) can be detached via a predetermined breaking point from the two inlets (14a, 14b) and the positioning element (16).
  13. The mixer according to any one of the Claims 4 to 12, characterized in that the passage (18), which connects the second inlet (14a) to the mixing chamber, leads past or through the reservoir chamber (19b) so that the passage (18) opens into the mixing chamber only downstream of the reservoir chamber (19b).
  14. The mixer according to any one of the Claims 4 to 13, in particular for mixing two components in a mixing ratio that is distinct from 1:1, characterized in that the outer diameters of both connectors of the inlets (14a, 14b) are identical in size.
EP12744011.3A 2011-08-24 2012-08-10 Cartridge system and static mixer therefor Active EP2747899B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12744011.3A EP2747899B1 (en) 2011-08-24 2012-08-10 Cartridge system and static mixer therefor

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE102011111046 2011-08-24
PCT/EP2011/068784 WO2012055926A1 (en) 2010-10-26 2011-10-26 Double cartridge, mixer therefor and combination of double cartridge and mixer
DE102012003390.7A DE102012003390B4 (en) 2011-08-24 2012-02-23 Cartridge system and static mixer for this
EP12744011.3A EP2747899B1 (en) 2011-08-24 2012-08-10 Cartridge system and static mixer therefor
PCT/EP2012/065689 WO2013026717A1 (en) 2011-08-24 2012-08-10 Cartridge system and static mixer therefor

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EP2747899A1 EP2747899A1 (en) 2014-07-02
EP2747899B1 true EP2747899B1 (en) 2018-12-05

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EP12744011.3A Active EP2747899B1 (en) 2011-08-24 2012-08-10 Cartridge system and static mixer therefor
EP12746331.3A Active EP2747900B1 (en) 2011-08-24 2012-08-10 Mixer and dispensing device

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Application Number Title Priority Date Filing Date
EP12746331.3A Active EP2747900B1 (en) 2011-08-24 2012-08-10 Mixer and dispensing device

Country Status (7)

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US (3) US9700859B2 (en)
EP (2) EP2747899B1 (en)
BR (1) BR112014004109B1 (en)
DE (1) DE202012013429U1 (en)
ES (1) ES2714273T3 (en)
IN (1) IN2014CN02197A (en)
WO (2) WO2013026721A1 (en)

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DE102017117557A1 (en) * 2017-08-02 2019-02-07 3lmed GmbH application system
DE102019101645A1 (en) 2019-01-23 2020-07-23 3lmed GmbH Application system with double tamper-evident closure
DE102019009116B4 (en) 2019-01-23 2021-02-25 3lmed GmbH Mixer and method for mixing two components
DE102019101640A1 (en) 2019-01-23 2020-07-23 3lmed GmbH cartridge
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ES2948946T3 (en) * 2019-04-30 2023-09-22 Ritter Gmbh Mixer with stabilization tanks
CN110201571B (en) * 2019-06-20 2021-08-06 山东润禾钾盐科技有限公司 Compound fertilizer mixing and stirring equipment

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Also Published As

Publication number Publication date
US20170157581A1 (en) 2017-06-08
WO2013026721A1 (en) 2013-02-28
US9550159B2 (en) 2017-01-24
ES2714273T3 (en) 2019-05-28
IN2014CN02197A (en) 2015-05-29
DE202012013429U1 (en) 2017-01-13
EP2747899A1 (en) 2014-07-02
US20140290773A1 (en) 2014-10-02
BR112014004109A2 (en) 2017-03-14
BR112014004109B1 (en) 2020-11-10
US20140301154A1 (en) 2014-10-09
EP2747900A1 (en) 2014-07-02
WO2013026717A1 (en) 2013-02-28
US9782737B2 (en) 2017-10-10
EP2747900B1 (en) 2015-07-29
US9700859B2 (en) 2017-07-11

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