EP2527041B1 - Zwischenstück für einen statischen Sprühmischer - Google Patents

Zwischenstück für einen statischen Sprühmischer Download PDF

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Publication number
EP2527041B1
EP2527041B1 EP12158032.8A EP12158032A EP2527041B1 EP 2527041 B1 EP2527041 B1 EP 2527041B1 EP 12158032 A EP12158032 A EP 12158032A EP 2527041 B1 EP2527041 B1 EP 2527041B1
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EP
European Patent Office
Prior art keywords
mixer housing
region
combination
mixer
accordance
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
EP12158032.8A
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German (de)
English (en)
French (fr)
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EP2527041A1 (de
Inventor
Andreas Hiemer
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.)
Medmix Switzerland AG
Original Assignee
Sulzer Mixpac AG
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Filing date
Publication date
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Priority to EP12158032.8A priority Critical patent/EP2527041B1/de
Publication of EP2527041A1 publication Critical patent/EP2527041A1/de
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Publication of EP2527041B1 publication Critical patent/EP2527041B1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—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
    • B01F25/432—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction with means for dividing the material flow into separate sub-flows and for repositioning and recombining these sub-flows; Cross-mixing, e.g. conducting the outer layer of the material nearer to the axis of the tube or vice-versa
    • B01F25/4321—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction with means for dividing the material flow into separate sub-flows and for repositioning and recombining these sub-flows; Cross-mixing, e.g. conducting the outer layer of the material nearer to the axis of the tube or vice-versa the subflows consisting of at least two flat layers which are recombined, e.g. using means having restriction or expansion zones
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0408—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing two or more liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/06—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane
    • B05B7/062—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/06—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane
    • B05B7/062—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet
    • B05B7/066—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet with an inner liquid outlet surrounded by at least one annular gas outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
    • B05B7/0807—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets
    • B05B7/0861—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets with one single jet constituted by a liquid or a mixture containing a liquid and several gas jets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/10—Spray pistols; Apparatus for discharge producing a swirling discharge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
    • B05B15/65—Mounting arrangements for fluid connection of the spraying apparatus or its outlets to flow conduits
    • B05B15/658—Mounting arrangements for fluid connection of the spraying apparatus or its outlets to flow conduits the spraying apparatus or its outlet axis being perpendicular to the flow conduit

Definitions

  • the invention relates to a combination of an intermediate piece with a static spray mixer.
  • Static mixers for mixing at least two flowable components are for example in the EP-A-0 749 776 and in the EP-A-0 815 929 described. Despite their simple, material-saving construction of their mixer structure, these very compact mixers produce good mixing results, especially when mixing highly viscous substances such as sealants, two-component foams, or two-component adhesives. Typically, such static mixers are designed for single use and are often used for curing products in which the mixer practically can not be cleaned.
  • the two components are atomized at the outlet of the mixer by exposure to a medium such as air and can then be applied in the form of a spray or spray on the desired substrate.
  • a medium such as air
  • the mixed components are atomized at the outlet of the mixer by exposure to a medium such as air and can then be applied in the form of a spray or spray on the desired substrate.
  • a static mixer comprising a bent outlet member is disclosed in US Pat EP 2 230 025 A1 disclosed.
  • the EP 1 083 005 A2 shows an intermediate piece to Use with a static mixer.
  • a device for the above applications is for example in the US-B-6,951,310 disclosed.
  • a tubular mixer housing is provided, which receives the mixing element for the static mixture and which has an external thread at one end, onto which an annular nozzle body is screwed.
  • the nozzle body also has an external thread.
  • a cone-shaped Zerstäuberelement is placed, which has on its conical surface a plurality of longitudinal grooves.
  • a cap is inverted, the inner surface is also designed conical, so that it rests against the conical surface of the atomizer. Consequently, the grooves form flow channels between the atomizer element and the cap.
  • the cap is fixed together with the atomizer element by means of a union nut, which is screwed onto the external thread of the nozzle body, on the nozzle body.
  • the nozzle body has a connection for pressure. In operation, the compressed air flows from the nozzle body through the flow channels between the atomizer element and the cap and atomizes the material emerging from the mixing element.
  • the object of the present invention is to mix such spray mixers and to make spraying of at least two flowable components accessible for an even wider field of application, whereby the simplest possible handling should be ensured.
  • the static spray mixer has a tubular mixer housing with at least one mixing element and a Zerstäubungshülse, wherein the mixer housing extends in the direction of a longitudinal axis to a distal end having an outlet opening for the components, the atomizing sleeve having an inlet channel for a pressurized Sputtering medium and an inner surface having a plurality of separate grooves, which can form separate flow channels together with the mixer housing.
  • the combination is characterized in that the intermediate piece has an inlet area for cooperation with the distal end area of the mixer housing, and an outlet area for cooperation with the atomizing sleeve, the inlet area and the outlet area enclosing a non-zero deflection angle, and the outlet area being at its the end portion facing away from the inlet portion has an end portion whose outer contour is equal to that of the mixer housing, so that the end portion of the outlet portion can cooperate with the sputtering sleeve in the same way as the distal end portion of the mixer housing with the sputtering sleeve can cooperate.
  • the intermediate piece makes it possible in a simple manner to use a static spray mixer even in those applications in which the surface to be sprayed is more difficult to access. So can be sprayed or sprayed around corners with this adapter, for example. This opens up an even wider field of application of such static spray mixers. Since the End portion of the outlet portion of the intermediate piece of its outer contour is the same design as the distal end portion of the mixer housing, this end portion of the outlet portion as well together with the Zerstäubungshülse as the mixer housing, that is, the intermediate piece allows an equally good homogeneous atomization and a stable flow of the fluid at the outlet of the intermediate piece, where the mixed components emerge.
  • the deflection angle between the inlet region and the outlet region is in the range of 45 to 135 degrees, preferably in the range of 60 to 120 degrees.
  • the angle of deflection between the inlet region and the outlet region is 90 degrees, because this geometry has proved advantageous for many applications.
  • the inner contour of the inlet region of the intermediate piece is dimensioned so that it can lie flat against the distal end region of the mixer housing.
  • the inlet area is thread-free connectable to the mixer housing, for example by means of a snap connection.
  • the outlet region can be connected without threads to the atomizing sleeve, for example by means of a snap connection.
  • a further advantageous measure consists in that the outlet region has, at its end facing the inlet region, an end plate which is designed to engage in the atomizing sleeve, so that leakage of the atomizing medium from the end plate is prevented during operation. This end plate can then be used by engaging in the atomizing sleeve for connection of the intermediate piece with the atomizing sleeve.
  • the outlet region comprises a channel for the mixed component having a substantially constant inner diameter. This measure makes it possible to realize that the outlet at the end of the intermediate piece is an image of the outlet opening on the mixer housing, so that at the outlet the same flow conditions prevail for the thoroughly mixed components as at the outlet opening.
  • At least one guide element is provided between the end plate and the end section of the outlet region, the outer diameter of which is modeled on the outer contour of the distal end region of the mixer housing.
  • a plurality of disc-shaped guide elements arranged one behind the other are provided for this purpose, the outer diameter of which is modeled on the outer diameter of the mixer housing. That is, a disc-shaped guide member, which is a certain distance away from the outlet of the intermediate piece, has in Essentially the same outer diameter as the mixer housing at the location which is located at the same distance from the outlet opening of the mixer housing.
  • a helical guide element is provided, the outer diameter of which is modeled on the outer diameter of the mixer housing.
  • a static spray mixer for mixing and spraying of at least two flowable components with an intermediate piece
  • the static spray mixer having a tubular mixer housing with at least one mixing element and a Zerstäubungshülse, wherein the mixer housing in the direction of a longitudinal axis to a distal End having an outlet opening for the components, and wherein the sputtering sleeve having an inlet channel for a pressurized sputtering medium and an inner surface with a plurality of separate grooves which can form separate flow channels together with the mixer housing.
  • a preferred combination is that the sputtering sleeve is connectable to the intermediate piece such that the sputtering sleeve is rotatable about the intermediate piece.
  • Fig. 1 shows a longitudinal section of an embodiment of a static spray mixer, which is generally designated by the reference numeral 100.
  • the spray mixer 100 is for mixing and spraying of at least two flowable components.
  • Fig. 2 shows a perspective sectional view of the distal end portion of the static spray mixer 100.
  • the static spray mixer 100 is on the two already cited international patent applications no. PCT / EP2011 / 057378 and PCT / EP2011 / 057379 of Sulzer Mixpac AG.
  • the spray mixer 100 includes a tubular, one-piece mixer housing 2 that extends in the direction of a longitudinal axis A to a distal end 21.
  • the distal end 21 is meant that end at which the mixed components leave the mixer housing 2 in the operating state.
  • the distal end 21 is provided with an outlet opening 22.
  • the mixer housing 2 has a connecting piece 23, by means of which the mixer housing 2 can be connected to a reservoir for the components.
  • This reservoir can be, for example, a known two-component cartridge, designed as a coaxial or side-by-side cartridge, or two tanks in which the two components are kept separate from each other.
  • the connector is designed, e.g. as a snap connection, as a bayonet connection, as a threaded connection or combinations thereof.
  • At least one static mixing element 3 is arranged in a manner known per se, which rests against the inner wall of the mixer housing 2, so that the two components can only pass through the mixing element 3 from the proximal end to the outlet opening 22. It can either several, arranged one behind the other Mixing elements 3 may be provided, or as in the present embodiment, a one-piece mixing element 3, which is preferably injection-molded and consists of a thermoplastic.
  • a static mixers or mixing elements 3 per se are well known to the person skilled in the art and therefore require no further explanation.
  • Such mixing elements are for example in the already cited documents EP-A-0 749 776 and EP-A-0 815 929 described.
  • Such a mixing element 3 of the Qudro® type has a rectangular, in particular a square cross section, perpendicular to the longitudinal direction A. Accordingly, the one-piece mixer housing 2, at least in the region in which it encloses the mixing element 3, a substantially rectangular, in particular square cross-sectional area perpendicular to the longitudinal axis A.
  • the mixing element 3 does not extend all the way to the distal end 21 of the mixer housing 2, but ends at a stop 25 (see Fig. 2 ), which is realized here by the transition of the mixer housing 2 from a square to a round cross-section. Seen in the direction of flow, therefore, the interior of the mixer housing 2 up to this stop 25 has a substantially square cross-section for receiving the mixing element 3.
  • the interior of the mixer housing 2 is in a circular cone shape, which realizes a taper in the mixer housing 2.
  • the interior thus has a circular cross section and forms an exit region 26, which tapers in the direction of the distal end 21 and there opens into the outlet opening 22.
  • the static spray mixer 1 further comprises a Zerstäubungshülse 4, a Inner surface which encloses the mixer housing 2 in its end region.
  • the atomizing sleeve 4 is designed in one piece and is preferably injection-molded, in particular made of a thermoplastic. It has an inlet channel 41 for a pressurized atomizing medium, which is in particular gaseous. Preferably, the atomization medium is compressed air.
  • the inlet channel 41 can be designed for all known connections, in particular also for a Luer lock.
  • the atomizing sleeve 4 is preferably connected thread-free with the mixer housing, in the present embodiment by means of a snap connection.
  • a flange-like elevation 24 is provided on the mixer housing 2 (see Fig. 2 ), which extends over the entire circumference of the mixer housing 2.
  • a circumferential groove 43 is provided, which is designed to cooperate with the survey 24. If the atomizing sleeve 4 is pushed over the mixer housing 2, the projection 24 snaps into the circumferential groove 43 and ensures a stable connection of the atomizing sleeve 4 to the mixer housing 2.
  • this snap connection is designed to be sealing, so that the atomizing medium - in this case not the compressed air can escape through this from the circumferential groove 43 and the survey 24 existing connection.
  • the atomizing sleeve 4 lies with its inner surface in a region between the mouth of the inlet channel 41 and the elevation 24 closely on the outer surface of the mixer housing 2, so that also a sealing effect is achieved, which prevents leakage or a reverse flow of the atomizing medium.
  • a plurality of each extending to the distal end 21 grooves 5 are provided which form separate flow channels between the sputtering sleeve 4 and the mixer housing 2, through which the sputtering medium from the inlet channel 41 of the sputtering 4 to the distal end 21 of the mixer housing 2 to flow can.
  • the grooves 5 may be curved, for example, arcuate or rectilinear or may be configured by combinations of curved and rectilinear sections. With regard to the specific design possibilities for the grooves 5, reference is made to the already cited international patent applications no. PCT / EP2011 / 057378 and PCT / EP2011 / 057379 directed.
  • the inner surface of the atomizing sleeve 4 is configured to cooperate with the distal end portion 27 of the mixer housing 2.
  • the ribs of the atomizing sleeve 4 provided between the grooves 5 and the outer surface of the mixer housing 2 lie tightly and sealingly against one another so that the grooves 5 each form a separate flow channel between the inner surface of the atomizing sleeve 4 and the outer surface of the mixer housing 2.
  • annular space 6 is in fluid communication with the inlet channel 41 of the atomizer sleeve 4. Through the annulus 6, the sputtering medium from the inlet channel 41 in the get separate flow channels.
  • the grooves 5 are uniformly distributed over the inner surface of the atomizing sleeve 4. It has proved to be advantageous with regard to the most complete and homogeneous atomization of the mixed components emerging from the outlet opening when the compressed air flows generated by the grooves 5 have a twist, ie a rotation on a helix about the longitudinal axis A. This twist causes a clear stabilization of the compressed air flow.
  • the circulating atomizing medium in this case compressed air, generates a jet which is stabilized by the swirl and thus acts evenly on the mixed components emerging from the outlet opening 22. This results in a very uniform and in particular reproducible spray pattern. Particularly favorable in this case is a possible cone-shaped compressed air jet, which is stabilized by the spin. This extremely uniform and reproducible air flow results in significantly lower overspray during use.
  • the grooves 5, which form the flow channels, do not extend exactly in the axial direction defined by the longitudinal axis A or inclined not only on the longitudinal axis, but the extension of the grooves 5 also has a component in the circumferential direction of the Atomizing sleeve 4.
  • the course of the grooves 5 is at least approximately spirally or helically about the longitudinal axis A.
  • Another measure for generating the twist is to arrange the inlet channel 41, through which the atomizing medium enters the flow channels, asymmetrically with respect to the longitudinal axis A.
  • the inlet channel 41 is arranged so that its central axis does not intersect the longitudinal axis A, but has a vertical distance from the longitudinal axis A.
  • This asymmetric or even eccentric arrangement of the inlet channel 41 with respect to the longitudinal axis A has the consequence that the atomizing medium, in this case the compressed air, when entering the annular space 6 in a rotational or swirling motion about the longitudinal axis A is added.
  • the air used as a sputtering medium can be additionally applied with kinetic energy downstream of the narrowest point and thus accelerate. As with a Laval nozzle, this happens through the flow cross-section widening again in the direction of flow.
  • this embodiment operates as follows.
  • the static spray mixer is connected by means of its connecting piece 23 to a storage vessel containing the two components separated from each other, for example with a two-component cartridge.
  • the inlet channel 41 of the atomizing sleeve 4 is connected to a source of the atomizing medium, for example a compressed air source.
  • the two components are discharged, get into the static spray mixer 100 and are intimately mixed there by means of the mixing element 3.
  • the two components after flowing through the mixing element 3, pass through the outlet region 26 of the mixer housing 2 to the outlet opening 22.
  • the compressed air flows through the inlet channel 41 of the atomizing sleeve 4 into the annular space 6 between the inner surface of the atomizing sleeve 4 and the outer surface of the mixer housing 2 , Obtained by the asymmetric arrangement a twist and passes from there through the grooves 5, which form the flow channels, to the distal end 21 and thus to the outlet opening 22 of the mixer housing 3.
  • the stabilized by the swirl compressed air flow meets the through the outlet opening 22nd Exiting mixed material, atomizes it evenly and transports it as a spray to the substrate to be treated or coated. Since in some applications the discharge of the components from the storage vessel takes place with compressed air or compressed air, the compressed air can also be used for the atomization.
  • FIG. 3 shows a perspective view of an embodiment of an intermediate piece, which is generally designated by the reference numeral 1, together with the static spray mixer 100 in an exploded view.
  • the intermediate piece 1 is specially designed to be arranged like an adapter between the distal end region of the mixer housing 2 and the atomizing sleeve 4.
  • the intermediate piece 1 comprises an inlet region 11 for cooperation with the distal end region 27 of the mixer housing 2 and an outlet region 12 for cooperation with the atomizing sleeve 4.
  • the outlet region 12 comprises an outlet 14, through which the mixed components can emerge.
  • the inlet region 11 and the outlet region 12 include a non-zero deflection angle ⁇ .
  • ⁇ the axis in the direction of which the inlet region 11 extends (here the longitudinal axis A of the mixer housing) and the axis B, in the direction of which the outlet region 12 extends, enclose the deflection angle ⁇ .
  • the deflection angle ⁇ is also different from 180 °.
  • the outlet region 12 has, at its end facing away from the inlet region 11, an end section 13 whose outside contour is equal to that of the mixer housing 2, so that the end section 13 of the outlet region 12 can co-operate with the atomizing sleeve 4 in the same way as the distal end region 27 of the mixer housing 2.
  • all the positive fluid mechanical properties realized by the cooperation between the atomizing sleeve 4 and the distal end portion 27 remain the same quality when the end portion 13 of the outlet portion 12 of the intermediate piece 1 cooperates with the atomizing sleeve 4.
  • formed by the grooves 5 see Fig.
  • the separate flow channels through which passes the sputtering medium in the same way in the form of individual compressed air jets (or jets of Zerstäubungsmediums) to the outlet end.
  • the compressed air jets are first formed at their exit as discrete individual jets, which then unite due to their swirl attachment to a uniform stable overall jet, which atomizes the exiting from the outlet 14 mixed components.
  • This total jet preferably has a conical shape.
  • the end portion 13 of the outlet portion 12 is thus a replica of the distal end of the mixer housing 2.
  • the deflection angle ⁇ is in the range of 45 ° to 135 °, in particular in the range of 60 ° to 120 °. In the embodiment described here, the deflection angle ⁇ is equal to 90 °, which is advantageous for many applications. It is understood, however, that any other deflection angle ⁇ are possible.
  • Fig. 6 shows an embodiment in the assembled state.
  • the inner contour of the inlet region 11 of the intermediate piece 1 is dimensioned such that the inlet region 11 lies flat against the distal end region 27 of the mixer housing 2. This ensures that the mixed components emerging from the mixer housing 2 flow completely into the intermediate piece and no leaks between the mixer housing 2 and the intermediate piece 1 occur.
  • the inlet region 11 is preferably connected thread-free with the mixer housing 2, because this ensures a particularly simple handling.
  • the inlet region 11 is connected via a snap connection with the mixer housing, in a manner similar to that described with reference to FIG Fig. 2 for the connection of the atomizing sleeve 4 with the mixer housing 2 is described.
  • a circumferential groove provided (corresponding to the circumferential groove 43 in FIG Fig. 2 ), which is configured to cooperate with the flange-like elevation 24 on the mixer housing 2.
  • this snap connection is designed to be sealing, so that a sealing effect is achieved as well Leakage or a reverse flow of the mixed components prevented.
  • connection of the intermediate piece 1 with the mixer housing 2 via a circumferential groove and the protruding elevation 24 has the further advantage that the intermediate piece 1 with respect to the mixer frame 2 is rotatable about the longitudinal axis A, whereby the flexibility increases with respect to the applications.
  • the outlet region 12 of the intermediate piece 1 is preferably connected thread-free with the atomizing sleeve 4.
  • a preferred compound is a snap connection.
  • the outlet region 12 has, at its end facing the inlet region 11, a disk-shaped end plate 15, which is designed such that it seals in the circumferential groove 43 (FIG. Fig. 2 ) of the atomizing sleeve 4 can intervene, in a manner analogous to this based on Fig. 2 was declared for the survey 24 of the mixer housing 2.
  • connection between the outlet region 12 and the atomizing sleeve 4 via the end plate 15 and the circumferential groove 43 also has the advantage that the atomizing sleeve 4 is rotatable about the outlet region around the axis B direction, so that in operation the supply of compressed air or the supply of the Sputtering medium can be made from any lateral position.
  • the outlet portion 12 further includes a central channel 16 for the mixed components extending to the outlet 14 and having a substantially constant inner diameter.
  • the outlet 14 of the intermediate piece 1 is an image of the outlet opening 22 of the mixer housing 2. This measure ensures that the fluid mechanical conditions at the outlet 14 of the intermediate piece 1 are at least approximately the same as when the atomizing sleeve 4 placed directly on the mixer housing 2 becomes. Consequently, no compromise on the quality of the spray process is required by the spacer 1.
  • the atomizing medium for example compressed air
  • the atomizing medium flows from there into the outlet region 12 of the intermediate piece 1, where an undesirable backward leakage is prevented by the end plate 15 and passes along the outside of the channel 16 to End portion 13, there to flow into the formed by the grooves 5 in the sputtering sleeve and the end portion 13 separate flow channels through which the sputtering medium reaches the region of the outlet 14, where it mixed the there exiting mixed Atomized components.
  • a further constructive measure consists in providing at least one guide element 17 between the end plate 15 and the end section 13 of the outlet region 12, whose outer diameter is modeled on the outer contour of the distal end region 27 of the mixer housing.
  • the guide element 17, which is a certain distance away from the outlet 14 of the intermediate piece 1 with respect to the direction defined by the axis B, has substantially the same outer diameter as the mixer housing 2 at the point which is in the same position Distance from the outlet opening 22 of the mixer housing is located.
  • This measure can also contribute positively to the fact that the flow conditions for the pressurized atomizing medium at the end of the intermediate piece 1 are comparable or equal to those which would be without the intermediate piece 1 at the outlet opening 22 of the mixer housing 2.
  • This guide element 17 is designed disk-shaped and has substantially the same outer diameter as the mixer housing 2 at the point which is equidistant from the outlet opening 22 as the guide member 17 from the outlet 14 of the intermediate piece. 1
  • FIG. 4 and 5 In each case a perspective view of another embodiment of the intermediate piece 1 is shown, wherein the intermediate piece 1 is placed on the mixer housing 2.
  • the following are just the differences to the in Fig. 3 illustrated embodiment, otherwise apply in connection with the embodiment in Fig. 3 Explanations made in accordance with the same manner also for the embodiments according to Fig. 4 and Fig. 5 ,
  • Fig. 4 are provided at the intermediate piece 1 more with respect to the direction defined by the axis B direction one behind the other arranged disc-shaped guide elements 17, namely four.
  • the outer diameter of the guide elements 17 is modeled on the outer diameter of the mixer housing 2.
  • a guide element 17 is provided, which is configured as a helical guide element 17.
  • the guide element 17 extends helically around the channel 17, wherein the outer diameter of the guide element is modeled on the outer diameter of the mixer housing.
  • Fig. 6 shows in perspective a combination of a static spray mixer 100 with one of the embodiments of the intermediate piece in the assembled state for operation.
  • the intermediate piece 1 such that the deflection angle ⁇ is variable, either in discrete steps or continuously.
  • an articulated connection e.g. a hinge or ball joint may be provided between the inlet area and the outlet area.
  • the inventive combination is to form the intermediate piece 1 to the mixer housing 2, so that the intermediate piece is integral with the mixer housing.
  • the intermediate piece 1 then forms the end of the mixer housing 2, which is angled by the deflection angle ⁇ -for example by 90 ° - against the longitudinal axis A of the mixer housing.
  • ⁇ deflection angle

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  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Nozzles (AREA)
EP12158032.8A 2011-05-23 2012-03-05 Zwischenstück für einen statischen Sprühmischer Active EP2527041B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12158032.8A EP2527041B1 (de) 2011-05-23 2012-03-05 Zwischenstück für einen statischen Sprühmischer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP11167132 2011-05-23
EP12158032.8A EP2527041B1 (de) 2011-05-23 2012-03-05 Zwischenstück für einen statischen Sprühmischer

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JP (1) JP6005978B2 (ko)
KR (1) KR102062250B1 (ko)
CN (1) CN102794120B (ko)
BR (1) BR102012012110B1 (ko)
CA (1) CA2770962C (ko)
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EP4238875A3 (en) * 2016-03-30 2023-11-08 The Patent Well LLC A clear sprayable sealant for aircraft parts and assemblies
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US20170312769A1 (en) * 2016-05-02 2017-11-02 Precision Valve & Automation, Inc. Mixing valve assembly having an atomizing spray tip
CN109382046B (zh) * 2017-08-11 2021-03-09 中国石油天然气股份有限公司 固定流化床反应器进料系统
CN108686862B (zh) * 2018-06-28 2023-08-25 山东万事达建筑钢品股份有限公司 一种悬臂式净化板喷胶系统
CN115155347B (zh) * 2022-06-10 2023-11-17 中国石油化工股份有限公司 一种乙烯与氧气混合用的混合器
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Publication number Publication date
US20120298775A1 (en) 2012-11-29
RU2012121192A (ru) 2013-11-27
US9393531B2 (en) 2016-07-19
CA2770962C (en) 2018-11-27
ES2699955T3 (es) 2019-02-13
BR102012012110B1 (pt) 2020-12-15
CN102794120A (zh) 2012-11-28
TWI586439B (zh) 2017-06-11
CN102794120B (zh) 2017-09-01
JP2012240047A (ja) 2012-12-10
KR102062250B1 (ko) 2020-01-03
CA2770962A1 (en) 2012-11-23
BR102012012110A2 (pt) 2015-08-11
TW201313326A (zh) 2013-04-01
BR102012012110A8 (pt) 2018-04-24
KR20190031456A (ko) 2019-03-26
JP6005978B2 (ja) 2016-10-12
EP2527041A1 (de) 2012-11-28

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