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EP2302120B1 - Injector for a textile processing machine - Google Patents

Injector for a textile processing machine Download PDF

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Publication number
EP2302120B1
EP2302120B1 EP09012009A EP09012009A EP2302120B1 EP 2302120 B1 EP2302120 B1 EP 2302120B1 EP 09012009 A EP09012009 A EP 09012009A EP 09012009 A EP09012009 A EP 09012009A EP 2302120 B1 EP2302120 B1 EP 2302120B1
Authority
EP
European Patent Office
Prior art keywords
injector
pressure distribution
distribution chamber
deflection
deflection point
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.)
Not-in-force
Application number
EP09012009A
Other languages
German (de)
French (fr)
Other versions
EP2302120A1 (en
Inventor
Michael Rädle
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.)
Groz Beckert KG
Original Assignee
Groz Beckert 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
Application filed by Groz Beckert KG filed Critical Groz Beckert KG
Priority to EP09012009A priority Critical patent/EP2302120B1/en
Priority to US12/884,299 priority patent/US20110067214A1/en
Priority to JP2010211219A priority patent/JP5714282B2/en
Priority to CN201010298290.4A priority patent/CN102021752B/en
Publication of EP2302120A1 publication Critical patent/EP2302120A1/en
Application granted granted Critical
Publication of EP2302120B1 publication Critical patent/EP2302120B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/492—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres by fluid jet
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H18/00—Needling machines
    • D04H18/04—Needling machines with water jets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • B05B1/20—Arrangements of several outlets along elongated bodies, e.g. perforated pipes or troughs, e.g. spray booms; Outlet elements therefor

Definitions

  • the invention relates to an injector for a textile processing machine.
  • the injector has an inflow chamber fluidically connected or connectable to a pressure source.
  • the pressurized liquid or gaseous medium, preferably water, the inflow chamber is passed on at least one connecting channel and in particular a plurality of connecting channels to a pressure distribution chamber on.
  • the pressure distribution chamber is fluidically connected to an outlet opening.
  • a receptacle for a strip-shaped nozzle foil is provided for a nozzle strip.
  • the nozzle foil has a multiplicity of nozzle openings which fluidly connect the pressure distribution chamber to the outlet opening when the nozzle foil is inserted into the receptacle.
  • nozzle orifices serve to form fine, needle-like jets of the medium, which can be expelled from the injector through the exit orifice. With the help of the beams, a random fiber web is consolidated to nonwoven fabric.
  • multiple injectors may be arranged either in series or radially around a drum.
  • the arrangement in series is a belt system in the arrangement around a drum is a drum system. It is also possible that drum system and belt system are arranged combined in a hydroentanglement system.
  • the DE 600 11 900 T2 to carry out the connecting channel as a slot channel, whereby the aligned with the slot channel nozzle openings are equally rectilinear and directly and substantially turbulence flows freely.
  • the flow conditions must be compensated in the inlet port of the slot channel in the inflow over the length of the slot channel, for which purpose a perforated tube is arranged in the inflow, through which the water supplied from the pressure source is distributed in the inflow chamber ,
  • an injector which has a baffle body in the form of a cylinder in the pressure distribution below the output ports of the connecting channels to avoid direct flow of a portion of the nozzle openings.
  • the effluent from the connecting channels water first strikes the impact body and flows around it before it reaches the nozzle openings.
  • the flow path of the medium between the inflow chamber and the nozzle openings is determined by the at least one connecting channel, as well as the pressure distribution chamber.
  • this flow path is predetermined by the course of the connection channel and / or the pressure distribution chamber so that it contains at least a first deflection point which is formed by a section of the connection channel and / or the pressure distribution chamber.
  • a deflection point comprises the entire surface of a region, that is to say a wall section of the connection channel and / or the pressure distribution chamber.
  • the flow direction of the medium preferably the water, is changed before it reaches the nozzle openings of the nozzle strip or the nozzle foil.
  • the injector has a conical outer shape. Then it has a smaller width in the area of the nozzle openings than in the area of the inflow chamber. This allows, in a radial arrangement, a plurality of injectors around a suction drum around that the injectors can be arranged closer together than in a rectangular execution of the injector. Furthermore, the maintenance of the injector, for example, during cleaning of the component-free chambers simplified.
  • the connecting channel between the inlet mouth in the inflow chamber and the outlet opening in the pressure distribution chamber allows a straight-line flow.
  • the connecting channel may be formed by a cylindrical bore.
  • a simple production of at least one connecting channel is possible.
  • a plurality of connecting channels between inlet chamber and pressure distribution chamber are provided in the longitudinal direction at a regular distance.
  • the connecting channel or the connecting channels preferably run outside a longitudinal center plane through the outlet opening in the longitudinal direction and, in the case of the nozzle foil inserted in the injector, through the nozzle foil extending longitudinal center plane.
  • the one or more connecting channels do not intersect this longitudinal median plane. In this arrangement of the connecting channel whose entrance mouth, viewed in section, is formed radius-shaped.
  • connection channels can be spaced apart on both sides of the longitudinal center plane through the outlet opening Be arranged longitudinal center plane.
  • the longitudinal center plane divides the injector into two parts through the outlet opening, wherein at least one connecting channel is provided in both parts.
  • water from different and, for example, opposite directions can flow into the pressure distribution chamber.
  • the introduced from different connecting channels and different inflow directions having water flows can either be directed directly against each other or offset in the longitudinal direction of each other in the pressure distribution chamber. Both measures are suitable for generating very uniform flow conditions in the pressure distribution chamber in the transition region to the outlet opening, where the nozzle openings are in the operating position of the nozzle foil.
  • a plurality of connection channels are provided on one side of the longitudinal center plane of the outlet opening, they can have different distances to the longitudinal center plane.
  • the first deflection point is provided in the flow path in the pressure distribution chamber downstream of the outlet orifice.
  • the first deflection point which comprises the entire surface of a first wall section of the pressure distribution chamber, has a first deflection surface.
  • This first deflection surface which runs obliquely or transversely to the outflow direction of the water leaving the exit orifice and thus forms the first resistance in the course of flow, which influences the flow direction, and a second deflection surface which is arranged radially to the flow direction with respect to the first deflection surface, form the first deflection.
  • the first deflection surface is formed by a first wall portion of the pressure distribution chamber.
  • Downstream of the first deflection point may be in the flow path the water a further, second deflection point be present, which is located in particular in the pressure distribution chamber and is preferably formed in a simple embodiment of a wall portion of the pressure distribution chamber. This second deflection point also encompasses the entire surface of the wall section assigned to it. Only after flowing through the two deflection points, the water reaches the nozzle openings of the nozzle strip.
  • the deflection surfaces may each have one or more planar surface portions. It is also possible to design the deflecting curved, for example, concave or convex. Preferably, the deflection surfaces are edgeless.
  • the inflow chamber and the at least one connecting channel can be provided in an injector body.
  • a discharge orifice having the injector body is connected to the injector body.
  • both the injector body and the injector base define the pressure distribution chamber, which is thus formed by a space between injector body and injector base.
  • the first deflection of the first deflection can be provided on the injector floor.
  • the second deflection surface of the first deflection point may be provided on the injector body. The two deflection surfaces can therefore be formed very easily during the production of the injector base or the injector body.
  • the first deflection surface of the second deflection point can be formed on the injector body and the second deflection surface of the second deflection point on the injector base. Further, it is possible that in another embodiment, the first deflection of the first deflection point on Injector and the second deflection of the first deflection is formed on the injector floor.
  • the connecting channel is arranged at an angle not equal to 90 ° to the longitudinal center plane of the inflow chamber. Then it is possible that the inlet mouth of the connecting channel is arranged on one side of the longitudinal center plane and the output mouth of the connecting channel on the other side of the longitudinal center plane. It is also possible that the longitudinal central axis of the connecting channel intersects the longitudinal center plane of the inflow chamber in the region of the inlet mouth and the outlet orifice of the connecting channel is arranged away from the longitudinal center plane of the inflow chamber. With such an arrangement, the entrance mouth has an elliptical circumference, which may be advantageous in terms of fluidics.
  • FIG. 1 illustrates a first embodiment of an injector 10 of a textile processing machine, which is used for the production of nonwovens.
  • the injector 10 has an injector body 11 and an injector bottom 12, which are connected to each other.
  • an inflow chamber 13 is present, which is connected via an inflow opening 14 with a pressure source 15.
  • the inflow chamber 13 is cylindrically shaped in the embodiment.
  • the inflow opening 14 is formed by a bore 13 coaxial with the longitudinal axis of the inflow chamber.
  • the inflow chamber 13 is closed fluid-tight on the inflow opening 14 opposite longitudinal end side of a screwed lid 16 of the injector body 11.
  • a ring seal 17 may be provided between the lid 16 and the seat of the lid.
  • the injector 10 also has a pressure distribution chamber 18, which extends in a longitudinal direction L in the region between the injector body 11 and the injector base 12.
  • the pressure distribution chamber 18 is thus formed jointly by the injector body 11 and the injector base 12.
  • a recess 19 which is open towards the injector body 11 is introduced into the injector base 12.
  • a recess 20 which is open towards the injector bottom 12 is correspondingly introduced.
  • the two recesses 19, 20 together form the pressure distribution chamber 18.
  • one or more sealing devices may be present, which are not shown in detail in the drawing.
  • connection channels 23 extend between an inlet mouth 24 in the inflow chamber 13 and an outlet mouth 25 in the pressure distribution chamber 18.
  • the connection channels 23 are formed by cylindrical bores in the injector body 11.
  • the longitudinal axes 26 of the connecting channels 23 extend substantially at right angles to the longitudinal direction L of the injector 10.
  • the outlet orifice 25 is thus located in the recess 20, which forms the part of the pressure distribution chamber 18 delimited by the injector body 11.
  • an outlet opening 30 is provided in the injector floor 12. It extends in the longitudinal direction L and is fluidically connected to the pressure distribution chamber 18. Subsequent to the pressure distribution chamber 18, the outlet opening 30 has a slot-shaped portion 31 to which a conical Section 32 connects. In cross section FIG. 2a seen the outlet opening 30 has a funnel-shaped overall. The side facing away from the injector body 11 of the injector base 12 forms an outlet side 33 of the injector 10. The conical portion 32 of the outlet opening 30 is open to the outlet side 33. A longitudinal center plane 34 divides the outlet opening 30 centrally. In the preferred embodiment, the outlet opening 30 is designed symmetrically to the longitudinal center plane 34.
  • a receptacle 35 for a nozzle foil 36 is provided in the transition region between the pressure distribution chamber 18 and the outlet opening 30, a receptacle 35 for a nozzle foil 36 is provided.
  • the nozzle foil 36 has a plurality of nozzle openings 37, which are arranged in the longitudinal direction L in particular regularly spaced. In the nozzle strip 36 one or more rows of nozzle openings 37 can be arranged next to one another in the longitudinal direction L. The nozzle openings 37 completely penetrate the nozzle foil 36. When inserted into the receptacle 35 nozzle film 36, the nozzle openings 37 are located between the pressure distribution chamber 18 and the outlet opening 30.
  • the receptacle 35 contains a seat for the nozzle foil 36, in which an annular seal 29 is arranged, in order to prevent a flow around the nozzle foil. The water must therefore flow through the nozzle openings 37.
  • the connecting channels 23 extend, for example, completely outside the longitudinal center plane 34 of the outlet opening 30.
  • the longitudinal axes 26 of the connecting channels 23 extend parallel to the longitudinal center plane 34 the outlet opening 30 at a distance.
  • the inlet openings 24 are laterally transversely to the longitudinal direction L offset to a longitudinal center plane 39 through the inflow chamber 13 (FIGS. FIG. 2a ).
  • the connecting channel 23 and the pressure distribution chamber 18 define a flow path 40 for the water flowing between the inflow chamber 13 and the outlet opening 30.
  • this flow path 40 there is a first deflection point 41, at which the flow direction of the water is changed. This prevents that a straight flow path between the inlet mouth 24 and the outlet opening 30 is possible.
  • the first deflection point 41 is formed by a first wall section 45 of the pressure distribution chamber 18, which comprises a first deflection surface 46 and a second deflection surface 61.
  • This first deflection surface 46 is located downstream of the outlet orifice 25 and runs at least in sections obliquely or transversely to the flow direction of the medium flowing out of the outlet orifice 25.
  • the deflection surface 46 is arranged on the outside of the connection channel 23.
  • the first deflection surface 46 is provided in the injector base 12 and therefore forms a wall portion of the recess 19 introduced into the injector base 12.
  • the first deflection surface 46 extends in the longitudinal direction L along the pressure distribution chamber 18. It is concavely curved about an axis extending in the longitudinal direction L.
  • the radius of curvature can be determined depending on the spatial relationships of the injector 10.
  • the second deflection surface 61 of the first deflection point 41 is arranged radially opposite the first deflection surface 45 in the flow direction.
  • This second deflection surface 61 is considered straight formed flat surface which is arranged at an acute angle to the longitudinal axis 26 of the connecting channel 23 and extends in the longitudinal direction L along the pressure distribution chamber 18.
  • the flow direction of the medium is determined by the interaction of the first deflection surface 46 and the second deflection surface 61.
  • the first deflection surface 46 may also have one or more planar surface sections or be formed by one or more planar surface sections.
  • the second deflection surface 61 may be curved, for example concave or convex. Preferably, this is both deflection surfaces 46, 61 are designed edgeless.
  • the first deflection point 41 is located in the axial extension of the connection channels 23.
  • the longitudinal axes 26 of the connection channels 23 intersect the first deflection surface 46 of the first wall section 45 of the first deflection point 41.
  • the first deflection surface 46 is not formed by an additional component but arises during manufacture the pressure distribution chamber 18.
  • the injector is formed exclusively by the injector body 11 and the injector base 12. An additional, separate component which has the deflection surface 46 is not necessary.
  • a second deflection point 49 is present in the flow path 40.
  • the second deflection point 49 is formed by a second wall section 50 of the pressure distribution chamber 18, which comprises a first deflection surface 51 and a second deflection surface 62.
  • the first deflection surface 51 of the second deflection point 49 is located on the injector body 11. It is part of the recess 20 introduced into the injector body 11.
  • the first deflection surface is 51 has a concave curvature and extends in the longitudinal direction L of the pressure distribution chamber 18. The first deflection surface 51 is offset laterally relative to the first deflection surface 46 of the first deflection point 41.
  • the longitudinal center plane 34 through the outlet opening 30 can intersect the first deflection surface 51.
  • the first deflection surface 51 directly adjoins the longitudinal center plane 34.
  • the second deflection surface 62 of the second deflection point 49 is formed on the injector base 12 and is part of the recess 19 formed on the injector base 12.
  • the second deflection surface 62 is formed by a flat surface and extends along the longitudinal direction L of the pressure distribution chamber 18. Die Malawi second deflection surface 51,62 is disposed above the receptacle 35 for the nozzle strip 36.
  • the flow direction of the medium is determined by the interaction of the first deflection surface 51 and the second deflection surface 62.
  • Both first deflection surfaces 46, 51 have the shape of a channel running in the longitudinal direction L.
  • the water flow along the flow path 40 thus has an initially straight course through the connecting channel 23 to the first deflection point 41. There, the flow is deflected laterally transversely to the longitudinal axis 26 of the connecting channel 23 and transversely to the longitudinal direction L. Further downstream, there is the second deflection point 49, which deflects the water in the direction of the outlet opening 30 to the nozzle strip 36, resulting in a flow direction after the second deflection point 49, which is approximately parallel to the outlet direction of the water jets 38 and parallel to the longitudinal center plane 34 the outlet opening 30 extends.
  • the flow path 40 is therefore substantially stepped.
  • flow-influencing unevennesses 52 in particular regularly distributed, can be arranged on walls or wall sections of the connection channels 23 and / or the pressure distribution chamber 18.
  • Such bumps 52 may be formed by concave depressions and / or protruding nubs.
  • Such unevennesses 52 are preferably present at least on wall sections of the pressure distribution chamber 18, in particular on one or more of the deflection surfaces 46, 61, 51, 62, as shown in FIG FIG. 2b is illustrated schematically by the example of the first deflection point 41.
  • FIG. 3 is one opposite the FIGS. 1 and 2 modified embodiment of the injector 10 illustrated.
  • the essential difference is that the longitudinal center plane 39 forms a common plane through the inflow chamber 13 with the longitudinal center plane 34 through the outlet opening 30.
  • the outlet opening 30 is thus arranged centrally relative to the inflow chamber 13.
  • FIG. 4 out Another embodiment of the injector 10 goes out FIG. 4 out.
  • the connecting channels 23 are not in a row in the longitudinal direction L but in two spaced rows 55 (FIG. FIG. 6 and 7 ) arranged. Both rows 55 are laterally spaced from the longitudinal center plane 39 by the inflow chamber 13, so that the longitudinal axes 26 of the connecting channels 23 extend parallel to and at a distance from the longitudinal center plane 39.
  • the longitudinal center plane 39 through the inflow chamber 13 divides the injector body 11 into two parts, wherein both parts each have a row 55 of connecting channels 23.
  • the connecting channels 23 are thus on both sides of the longitudinal center plane 39 through arranged the inflow chamber 13.
  • the flow path 40 through one of the connecting channels 23 into the pressure distribution chamber 18 has the course described above. Again, following each Verbindunskanal 23 in the pressure distribution chamber 18, both a first deflection 41, and a second deflection 49 are provided so that the inflowing into the pressure distribution chamber 18 water at each flow path 40 is deflected twice before it the nozzle strip 36th or reaches the outlet opening 30. For this purpose, reference may be made to the above description.
  • the flows from one row 55 coincide with the flows from the other row 55 in the pressure distribution chamber 18.
  • the flow directions of the water flowing in from one row 55 are different from the flow direction of the water flowing in from the other row 55.
  • connection channels 23 can be arranged symmetrically with respect to the longitudinal center plane 39 of the inflow chamber 13.
  • the connection channels 23 are arranged in pairs, so that a connection channel 23 of a pair 56 is arranged on one side of the longitudinal center plane 39 and the respective other connection channel 23 of this pair 56 on the other side of the longitudinal center plane 39 ( FIG. 6 ).
  • this pairwise symmetrical arrangement it is possible to cross or direct the two water streams of a pair 56 of connection channels 23 in the pressure distribution chamber 18, whereby a good water mixing can be achieved.
  • FIG. 7 is an alternative arrangement possibility the two rows 55 of connecting channels 23 shown.
  • the two rows 55 seen in the longitudinal direction L offset from each other.
  • the flows entering the pressure distribution chamber 18 via the two rows 55 of connection channels 23 do not intersect in a common plane defined at right angles to the longitudinal direction L.
  • the water flows in the longitudinal direction L flow into the pressure distribution chamber 18.
  • the individual streams extend transversely to the respective flow direction in the pressure distribution chamber 18 well.
  • the receptacle 35 for the nozzle strip 36 on both longitudinal sides slit-like recesses 60, so that the inserted nozzle sheet 36 engages on its two longitudinal sides in the recess 60.
  • the nozzle foil 36 it can be inserted in the longitudinal direction L into the injector 10.
  • FIG. 5 such recesses 60 are not present.
  • the receptacle 35 is formed by a groove with a rectangular cross-section. Holding or clamping means for pressing the nozzle foil 36 on the seal 29 may be present, but are not shown in detail in the drawing.
  • the invention relates to an injector for a textile processing machine for producing nonwoven fabric.
  • an injector body 11 an inflow chamber 13 is provided, is provided in the pressurized medium.
  • the connecting channels 23 are formed by cylindrical bores which are introduced into the injector body 11.
  • the connection channels 23 are in one or two rows offset from the longitudinal center plane 39 of the inflow chamber 13 is arranged.
  • the pressure distribution chamber 18 adjoining the connection channels 23 has a first wall section 45, which forms a first deflection surface 46.
  • the medium flowing out of the connection channels 23 is deflected so that it changes direction before it reaches the nozzle openings 37 of a nozzle strip 36 downstream.
  • a direct rectilinear flow against the nozzle openings 37 from the inflow chamber 13 is thus not possible.
  • water jets 38 are formed, which are ejected via an outlet opening 30 from the injector 10.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)

Description

Die Erfindung betrifft einen Injektor für eine Textilbearbeitungsmaschine. Der Injektor weist eine mit einer Druckquelle fluidisch verbundene oder verbindbare Einströmkammer auf. Das unter Druck stehende flüssige oder gasförmige Medium, vorzugsweise Wasser, der Einströmkammer wird über wenigstens einen Verbindungskanal und insbesondere mehrere Verbindungskanale an eine Druckverteilkammer weiter geleitet. Die Druckverteilkammer ist fluidisch mit einer Austrittsöffnung verbunden. Zwischen der Druckverteilkammer und der Austrittsöffnung ist eine Aufnahme für eine streifenförmige Düsenfolie, für ein Düsenstreifen vorgesehen. Die Düsenfolie verfügt über eine Vielzahl von Düsenöffnungen, die bei in die Aufnahme eingesetzter Düsenfolie die Druckverteilkammer mit der Austrittsöffnung fluidisch verbinden. Die Düsenöffnungen dienen zur Bildung von feinen, nadelartigen Strahlen des Mediums, die durch die Austrittsöffnung vom Injektor ausgestoßen werden können. Mit Hilfe der Strahlen wird ein Wirrfasergelege zu Vliesstoff verfestigt. In Gebrauch können in einer Wasserstrahlverfestigungsanlage mehrere Injektoren entweder in Reihe hintereinander oder radial um eine Trommel angeordnet sein. Bei der Anordnung in Reihe handelt es sich um eine Bandanlage bei der Anordnung um eine Trommel handelt es sich um eine Trommelanlage. Es ist auch möglich, dass Trommelanlage und Bandanlage in einer Wasserstrahlverfestigungsanlage kombiniert angeordnet sind.The invention relates to an injector for a textile processing machine. The injector has an inflow chamber fluidically connected or connectable to a pressure source. The pressurized liquid or gaseous medium, preferably water, the inflow chamber is passed on at least one connecting channel and in particular a plurality of connecting channels to a pressure distribution chamber on. The pressure distribution chamber is fluidically connected to an outlet opening. Between the pressure distribution chamber and the outlet opening, a receptacle for a strip-shaped nozzle foil is provided for a nozzle strip. The nozzle foil has a multiplicity of nozzle openings which fluidly connect the pressure distribution chamber to the outlet opening when the nozzle foil is inserted into the receptacle. The nozzle orifices serve to form fine, needle-like jets of the medium, which can be expelled from the injector through the exit orifice. With the help of the beams, a random fiber web is consolidated to nonwoven fabric. In use, in a hydroentanglement plant, multiple injectors may be arranged either in series or radially around a drum. The arrangement in series is a belt system in the arrangement around a drum is a drum system. It is also possible that drum system and belt system are arranged combined in a hydroentanglement system.

Es hat sich gezeigt, dass es abhängig von den Anströmverhältnissen der Düsenöffnungen in der Druckverteilkammer zu qualitativ unterschiedlichen Strahlen, insbesondere Wasserstrahlen kommen kann. Wird eine Düsenöffnung durch den Verbindungskanal und die Druckverteilkammer geradlinig angeströmt, so ist der sich dadurch bildende Wasserstrahl kompakter und in seiner nadelartigen Form stabiler. Im Unterschied dazu werden durch Düsenöffnungen, über denen sich in der Druckverteilkammer turbulente Strömungen ausbilden, diffusere Wasserstrahlen geformt. Diese Unterschiede zwischen den Wasserstrahlen führen zu einer unterschiedlichen Verdichtung des Wirrfasergeleges, so dass kein einheitlich fester und dichter Vliesstoff produziert werden kann.It has been shown that it depends on the flow conditions of the nozzle openings in the pressure distribution chamber to qualitatively different rays, in particular water jets can come. If a nozzle opening flows straight through the connecting channel and the pressure distribution chamber, then the water jet forming thereby becomes more compact and more stable in its needle-like form. In contrast, more diffuse water jets are formed through nozzle openings, which form turbulent flows in the pressure distribution chamber. These differences between the water jets result in a different compaction of the random fiber fabric, so that no uniformly strong and dense nonwoven fabric can be produced.

Um dieses Problem zu beheben, schlägt die DE 600 11 900 T2 vor, den Verbindungskanal als Schlitzkanal auszuführen, wodurch die mit dem Schlitzkanal fluchtenden Düsenöffnungen gleichermaßen geradlinig und direkt und im Wesentlichen turbulenzfrei angeströmt werden. Um dies sicher zu stellen, müssen auch die Strömungsverhältnisse im Bereich der Eingangsmündung des Schlitzkanals in der Einströmkammer über die Länge des Schlitzkanals ausgeglichen werden, wozu in der Einströmkammer ein perforiertes Rohr angeordnet ist, durch das das von der Druckquelle zugeführte Wasser in der Einströmkammer verteilt wird.To fix this problem, the DE 600 11 900 T2 to carry out the connecting channel as a slot channel, whereby the aligned with the slot channel nozzle openings are equally rectilinear and directly and substantially turbulence flows freely. To ensure this, the flow conditions must be compensated in the inlet port of the slot channel in the inflow over the length of the slot channel, for which purpose a perforated tube is arranged in the inflow, through which the water supplied from the pressure source is distributed in the inflow chamber ,

Aus DE 10 2005 055 939 B3 ist ein Injektor bekannt, der zu Vermeidung einer direkten Anströmung eines Teils der Düsenöffnungen einen Prallkörper in Form eines Zylinders in der Druckverteilkammer unterhalb der Ausgangsmündungen der Verbindungskanäle aufweist. Das aus den Verbindungskanälen ausströmende Wasser trifft dabei zunächst auf den Prallkörper und umströmt diesen, bevor es zu den Düsenöffnungen gelangt.Out DE 10 2005 055 939 B3 an injector is known, which has a baffle body in the form of a cylinder in the pressure distribution below the output ports of the connecting channels to avoid direct flow of a portion of the nozzle openings. The effluent from the connecting channels water first strikes the impact body and flows around it before it reaches the nozzle openings.

Davon ausgehend kann es als Aufgabe der vorliegenden Erfindung angesehen werden einen Injektor bereit zu stellen, der ohne zusätzliche strömungsleitende Bauteile in der Einströmkammer oder in der Druckverteilkammer auskommt und dennoch eine gleichmäßige Wasserstrahlbildung gewährleistet.On this basis, it can be regarded as an object of the present invention to provide an injector, which manages without additional flow-conducting components in the inflow chamber or in the pressure distribution chamber and yet ensures a uniform water jet formation.

Diese Aufgabe wird durch einen Injektor gemäß Patentanspruch 1 gelöst.This object is achieved by an injector according to claim 1.

Der Strömungsweg des Mediums zwischen der Einströmkammer und den Düsenöffnungen wird durch den wenigstens einen Verbindungskanal, sowie die Druckverteilkammer bestimmt. Beim erfindungsgemäßen Injektor ist dieser Strömungsweg durch den Verlauf des Verbindungskanals und/oder der Druckverteilkammer so vorgegeben, dass er zumindest eine erste Umlenkstelle enthält, die von einem Abschnitt des Verbindungskanals und/oder der Druckverteilkammer gebildet ist. Eine Umlenkstelle umfasst die gesamte Oberfläche eines Bereiches, also einen Wandabschnitt des Verbindungskanals und/oder der Druckverteilkammer. An dieser ersten Umlenkstelle wird die Strömungsrichtung des Mediums, vorzugsweise des Wassers geändert, bevor es die Düsenöffnungen des Düsenstreifens bzw. der Düsenfolie erreicht. Auf diese Weise ist sicher gestellt, dass an keiner Düsenöffnung ein geradliniges direktes Anströmen des aus der Einströmkammer herausfliesenden Mediums möglich ist. Die Strömungsverhältnisse an den Düsenöffnungen werden vereinheitlicht, wodurch Unterschiede zwischen den Strahlen, die zu Unterschieden in der Qualität und der Dichte des produzierten Vliesstoffes führen, vermieden werden. Das Anordnen von strömungsbeeinflussenden Bauteilen in der Einströmkammer oder in der Druckverteilkammer ist nicht notwendig. Dadurch können die beiden Kammern kleiner dimensioniert werden, so dass die Wandfläche der Kammern kleiner ist. Der auf eine kleinere Wandfläche wirkende Druck des Mediums verringert die auf den Injektor ausgeübte Verformungskraft, so dass die Wandstärken des Injektors reduziert werden können. Dies ermöglicht, dass die Außenform des Injektors an die veränderten Anforderungen angepasst werden kann. So ist es beispielsweise möglich, dass der Injektor eine konische Außenform aufweist. Dann weist er im Bereich der Düsenöffnungen eine geringere Breite auf als im Bereich der Einströmkammer. Dies ermöglicht, bei einer radialen Anordnung mehrere Injektoren um eine Absaugtrommel herum, dass die Injektoren dichter aneinander angeordnet werden können, als bei einer rechtwinkeligen Ausführung des Injektors. Ferner vereinfacht sich auch die Wartung des Injektors, beispielsweise bei Reinigungsarbeiten der bauteilfreien Kammern.The flow path of the medium between the inflow chamber and the nozzle openings is determined by the at least one connecting channel, as well as the pressure distribution chamber. In the injector according to the invention, this flow path is predetermined by the course of the connection channel and / or the pressure distribution chamber so that it contains at least a first deflection point which is formed by a section of the connection channel and / or the pressure distribution chamber. A deflection point comprises the entire surface of a region, that is to say a wall section of the connection channel and / or the pressure distribution chamber. At this first deflection point, the flow direction of the medium, preferably the water, is changed before it reaches the nozzle openings of the nozzle strip or the nozzle foil. In this way it is ensured that at no nozzle opening a straight-line direct flow of the medium flowing out of the inflow chamber is possible. The flow conditions at the nozzle orifices are unified, thereby avoiding differences between the jets, which lead to differences in the quality and density of the produced nonwoven fabric. The arrangement of flow-influencing components in the inflow chamber or in the pressure distribution chamber is not necessary. As a result, the two chambers can be made smaller, so that the wall surface of the chambers is smaller. The pressure of the medium acting on a smaller wall surface reduces the deformation force exerted on the injector so that the wall thicknesses of the injector can be reduced. This allows the outer shape of the injector to be adapted to the changed requirements. For example, it is possible that the injector has a conical outer shape. Then it has a smaller width in the area of the nozzle openings than in the area of the inflow chamber. This allows, in a radial arrangement, a plurality of injectors around a suction drum around that the injectors can be arranged closer together than in a rectangular execution of the injector. Furthermore, the maintenance of the injector, for example, during cleaning of the component-free chambers simplified.

Vorteilhafterweise erlaubt der Verbindungskanal zwischen Eingangsmündung in der Einströmkammer und Ausgangsmündung in der Druckverteilkammer eine geradlinige Strömung. Beispielsweise kann der Verbindungskanal von einer zylindrischen Bohrung gebildet sein. Dadurch ist eine einfache Herstellung des wenigstens einen Verbindungskanals möglich. Insbesondere sind in Längsrichtung mit regelmäßigem Abstand mehrere Verbindungskanäle zwischen Einströmkammer und Druckverteilkammer vorgesehen.Advantageously, the connecting channel between the inlet mouth in the inflow chamber and the outlet opening in the pressure distribution chamber allows a straight-line flow. For example, the connecting channel may be formed by a cylindrical bore. As a result, a simple production of at least one connecting channel is possible. In particular, a plurality of connecting channels between inlet chamber and pressure distribution chamber are provided in the longitudinal direction at a regular distance.

Der Verbindungskanal bzw. die Verbindungskanäle verlaufen vorzugsweise außerhalb einer in Längsrichtung mittig durch die Austrittsöffnung und, bei im Injektor eingesetzter Düsenfolie, durch die Düsenfolie verlaufenden Längsmittelebene. Der oder die Verbindungskanäle schneiden diese Längsmittelebene nicht. Bei dieser Anordnung des Verbindungskanals ist dessen Eingangsmündung, im Schnitt betrachtet, radiusförmig ausgebildet.The connecting channel or the connecting channels preferably run outside a longitudinal center plane through the outlet opening in the longitudinal direction and, in the case of the nozzle foil inserted in the injector, through the nozzle foil extending longitudinal center plane. The one or more connecting channels do not intersect this longitudinal median plane. In this arrangement of the connecting channel whose entrance mouth, viewed in section, is formed radius-shaped.

Sind mehrere Verbindungskanäle vorgesehen, kann auf beiden Seiten der Längsmittelebene durch die Austrittsöffnung wenigstens einer der Verbindungskanäle mit Abstand zur Längsmittelebene angeordnet sein. Mit anderen Worten unterteilt die Längsmittelebene durch die Austrittsöffnung den Injektor in zwei Teile, wobei in beiden Teilen wenigstens ein Verbindungskanal vorgesehen ist. Auf diese Weise kann Wasser aus unterschiedlichen und beispielsweise entgegengesetzten Richtungen in die Druckverteilkammer einströmen. Die aus verschiedenen Verbindungskanälen eingeleiteten und unterschiedliche Einströmrichtungen aufweisenden Wasserströme können entweder unmittelbar gegeneinander gerichtet werden oder in Längsrichtung versetzt zueinander in die Druckverteilkammer eingeleitet werden. Beide Maßnahmen sind dazu geeignet sehr gleichmäßige Strömungsverhältnisse in der Druckverteilkammer im Übergangsbereich zur Austrittsöffnung zu erzeugen, wo sich die Düsenöffnungen in Gebrauchslage der Düsenfolie befinden. Sind mehrere Verbindungskanäle auf einer Seite der Längsmittelebene der Austrittsöffnung vorgesehen, können diese unterschiedlich große Abstände zur Längmittelebene aufweisen.If a plurality of connection channels are provided, at least one of the connection channels can be spaced apart on both sides of the longitudinal center plane through the outlet opening Be arranged longitudinal center plane. In other words, the longitudinal center plane divides the injector into two parts through the outlet opening, wherein at least one connecting channel is provided in both parts. In this way, water from different and, for example, opposite directions can flow into the pressure distribution chamber. The introduced from different connecting channels and different inflow directions having water flows can either be directed directly against each other or offset in the longitudinal direction of each other in the pressure distribution chamber. Both measures are suitable for generating very uniform flow conditions in the pressure distribution chamber in the transition region to the outlet opening, where the nozzle openings are in the operating position of the nozzle foil. If a plurality of connection channels are provided on one side of the longitudinal center plane of the outlet opening, they can have different distances to the longitudinal center plane.

Bei einer bevorzugten Ausgestaltung ist die erste Umlenkstelle im Strömungsweg in der Druckverteilkammer stromabwärts der Ausgangsmündung vorgesehen. Die erste Umlenkstelle, die die gesamte Oberfläche eines ersten Wandabschnitts der Druckverteilkammer umfasst, weist eine erste Umlenkfläche auf. Diese erste Umlenkfläche, die schräg oder quer zur Ausströmrichtung des aus der Ausgangsmündung austretenden Wassers verläuft und somit im Strömungsverlauf den ersten Widerstand bildet, der die Strömungsrichtung beeinflusst, und eine zweite Umlenkfläche, die radial zur Strömungsrichtung gegenüber der ersten Umlenkfläche angeordnet ist, bilden die erste Umlenkstelle. Vorzugsweise ist die erste Umlenkfläche von einem ersten Wandabschnitt der Druckverteilkammer gebildet.In a preferred embodiment, the first deflection point is provided in the flow path in the pressure distribution chamber downstream of the outlet orifice. The first deflection point, which comprises the entire surface of a first wall section of the pressure distribution chamber, has a first deflection surface. This first deflection surface, which runs obliquely or transversely to the outflow direction of the water leaving the exit orifice and thus forms the first resistance in the course of flow, which influences the flow direction, and a second deflection surface which is arranged radially to the flow direction with respect to the first deflection surface, form the first deflection. Preferably, the first deflection surface is formed by a first wall portion of the pressure distribution chamber.

Stromabwärts der ersten Umlenkstelle kann im Strömungsweg des Wassers eine weitere, zweite Umlenkstelle vorhanden sein, die sich insbesondere in der Druckverteilkammer befindet und bei einer einfachen Ausführung vorzugsweise von einem Wandabschnitt der Druckverteilkammer gebildet ist. Auch diese zweite Umlenkstelle umfasst die gesamte Oberfläche des ihr zugeordneten Wandabschnitts. Erst nach dem Durchströmen der beiden Umlenkstellen gelangt das Wasser zu den Düsenöffnungen des Düsenstreifens.Downstream of the first deflection point may be in the flow path the water a further, second deflection point be present, which is located in particular in the pressure distribution chamber and is preferably formed in a simple embodiment of a wall portion of the pressure distribution chamber. This second deflection point also encompasses the entire surface of the wall section assigned to it. Only after flowing through the two deflection points, the water reaches the nozzle openings of the nozzle strip.

Die Umlenkflächen können jeweils einen oder mehrere ebene Flächenabschnitte aufweisen. Es ist auch möglich, die Umlenkflächen gekrümmt beispielsweise konkav oder konvex auszugestalten. Vorzugsweise sind die Umlenkflächen kantenlos ausgeführt.The deflection surfaces may each have one or more planar surface portions. It is also possible to design the deflecting curved, for example, concave or convex. Preferably, the deflection surfaces are edgeless.

Die Einströmkammer und der wenigstens eine Verbindungskanal können in einem Injektorkörper vorgesehen sein. Dabei ist mit dem Injektorkörper vorzugsweise ein die Austrittsöffnung aufweisender Injektorboden verbunden. Bei einer bevorzugten Ausführungsform des Injektors begrenzen sowohl der Injektorkörper als auch der Injektorboden die Druckverteilkammer, die mithin durch einen Raum zwischen Injektorkörper und Injektorboden gebildet ist. Eine solche Ausgestaltung ermöglicht ein einfaches Herstellen der Druckverteilkammer. Die erste Umlenkfläche der ersten Umlenkstelle kann dabei am Injektorboden vorgesehen sein. Die zweite Umlenkfläche der ersten Umlenkstelle kann am Injektorkörper vorgesehen sein. Die beiden Umlenkflächen können daher sehr einfach bei der Herstellung des Injektorbodens bzw. des Injektorkörpers gebildet werden. Die erste Umlenkfläche der zweiten Umlenkstelle kann bei diesem Ausführungsbeispiel am Injektorkörper und die zweite Umlenkfläche der zweiten Umlenkstelle am Injektorboden ausgebildet sein. Weiter ist es möglich, dass bei einem anderen Ausführungsbeispiel die erste Umlenkfläche der ersten Umlenkstelle am Injektorkörper und die zweite Umlenkfläche der ersten Umlenkstelle am Injektorboden gebildet ist.The inflow chamber and the at least one connecting channel can be provided in an injector body. In this case, preferably a discharge orifice having the injector body is connected to the injector body. In a preferred embodiment of the injector, both the injector body and the injector base define the pressure distribution chamber, which is thus formed by a space between injector body and injector base. Such a configuration enables a simple production of the pressure distribution chamber. The first deflection of the first deflection can be provided on the injector floor. The second deflection surface of the first deflection point may be provided on the injector body. The two deflection surfaces can therefore be formed very easily during the production of the injector base or the injector body. In this embodiment, the first deflection surface of the second deflection point can be formed on the injector body and the second deflection surface of the second deflection point on the injector base. Further, it is possible that in another embodiment, the first deflection of the first deflection point on Injector and the second deflection of the first deflection is formed on the injector floor.

In besonderen Anwendungsfällen ist es möglich, dass der Verbindungskanal in einem Winkel ungleich 90° zur Längsmittelebene der Einströmkammer angeordnet ist. Dann ist es möglich, dass die Eingangsmündung des Verbindungskanals auf der einen Seite der Längsmittelebene und die Ausgangsmündung des Verbindungskanals auf der anderen Seite der Längsmittelebene angeordnet ist. Es ist auch möglich, dass die Längsmittelachse des Verbindungskanals die Längsmittelebene der Einströmkammer im Bereich der Eingangsmündung schneidet und die Ausgangsmündung des Verbindungskanals von der Längsmittelebene der Einströmkammer entfernt angeordnet ist. Bei solch einer Anordnung weist die Eingangsmündung einen elliptischen Umfang auf, der fliestechnisch von Vorteil sein kann.In special applications, it is possible that the connecting channel is arranged at an angle not equal to 90 ° to the longitudinal center plane of the inflow chamber. Then it is possible that the inlet mouth of the connecting channel is arranged on one side of the longitudinal center plane and the output mouth of the connecting channel on the other side of the longitudinal center plane. It is also possible that the longitudinal central axis of the connecting channel intersects the longitudinal center plane of the inflow chamber in the region of the inlet mouth and the outlet orifice of the connecting channel is arranged away from the longitudinal center plane of the inflow chamber. With such an arrangement, the entrance mouth has an elliptical circumference, which may be advantageous in terms of fluidics.

Vorteilhafte Ausgestaltungen und weitere Merkmale der Erfindung ergeben sich aus den abhängigen Patentansprüchen und der Beschreibung. Die Zeichnung ist ergänzend heranzuziehen. Im Folgenden werden Ausführungsbeispiele der Erfindung anhand der beigefügten Zeichnung näher erläutert. Es zeigen:

  • Figur 1 einen schematischen Längsschnitt eines ersten Ausführungsbeispiels eines Injektors gemäß der Schnittlinie I-I in Figur 2a,
  • Figur 2a einen Querschnitt durch den Injektor aus Figur 1 gemäß der Schnittlinie II-II in Figur 1,
  • Figur 2b eine schematische Querschnittsdarstellung der ersten Umlenkstelle aus Figur 2a,
  • Figur 3 eine schematische Querschnittsdarstellung einer Abwandlung des Ausführungsbeispiels des Injektors nach Figuren 1 2a und 2b,
  • Figur 4 ein weiteres Ausführungsbeispiel eines Injektors in schematischer Querschnittsdarstellung mit zwei in Längsrichtung verlaufenden Reihen von Verbindungskanälen,
  • Figur 5 eine Abwandlung des Ausführungsbeispiels des Injektors nach Figur 4 in schematischer Querschnittsdarstellung,
  • Figur 6 eine Teildarstellung eines Längsschnitts durch die Einströmkammer eines Ausführungsbeispiels mit zwei Reihen von Verbindungskanälen gemäß Schnittlinie III-III in Figur 4 oder 5 und
  • Figur 7 eine Abwandlung der Anordnung der beiden Reihen von Verbindungskanälen in der Ansicht nach Figur 6.
Advantageous embodiments and further features of the invention will become apparent from the dependent claims and the description. The drawing is to be used as a supplement. In the following, embodiments of the invention are explained in more detail with reference to the accompanying drawings. Show it:
  • FIG. 1 a schematic longitudinal section of a first embodiment of an injector according to the section line II in FIG. 2a .
  • FIG. 2a a cross section through the injector of Figure 1 according to the section line II-II in FIG. 1 .
  • FIG. 2b a schematic cross-sectional view of the first deflection point FIG. 2a .
  • FIG. 3 a schematic cross-sectional view of a modification of the embodiment of the injector according to FIGS. 1 2a and 2b .
  • FIG. 4 FIG. 2 shows another embodiment of an injector in a schematic cross-sectional view with two longitudinal rows of connecting channels, FIG.
  • FIG. 5 a modification of the embodiment of the injector after FIG. 4 in a schematic cross-sectional representation,
  • FIG. 6 a partial view of a longitudinal section through the inflow chamber of an embodiment with two rows of connecting channels according to section line III-III in FIG. 4 or 5 and
  • FIG. 7 a modification of the arrangement of the two rows of connecting channels in the view after FIG. 6 ,

Figur 1 veranschaulicht ein erstes Ausführungsbeispiel eines Injektors 10 einer Textilbearbeitungsmaschine, die zum Herstellen von Vliesstoffen dient. Der Injektor 10 weist einen Injektorkörper 11 und einen Injektorboden 12 auf, die miteinander verbunden sind. Im Injektorkörper 11 ist eine Einströmkammer 13 vorhanden, die über eine Einströmöffnung 14 mit einer Druckquelle 15 verbunden ist. Die Einströmkammer 13 ist beim Ausführungsbeispiel zylindrisch geformt. Die Einströmöffnung 14 ist von einer zur Längsachse der Einströmkammer 13 koaxialen Bohrung gebildet. Die Einströmkammer 13 ist auf der Einströmöffnung 14 entgegengesetzten Längsendseite von einem angeschraubten Deckel 16 des Injektorkörpers 11 fluiddicht verschlossen. Hierfür kann zwischen dem Deckel 16 und dem Sitz des Deckels eine Ringdichtung 17 vorgesehen sein. FIG. 1 illustrates a first embodiment of an injector 10 of a textile processing machine, which is used for the production of nonwovens. The injector 10 has an injector body 11 and an injector bottom 12, which are connected to each other. In the injector body 11, an inflow chamber 13 is present, which is connected via an inflow opening 14 with a pressure source 15. The inflow chamber 13 is cylindrically shaped in the embodiment. The inflow opening 14 is formed by a bore 13 coaxial with the longitudinal axis of the inflow chamber. The inflow chamber 13 is closed fluid-tight on the inflow opening 14 opposite longitudinal end side of a screwed lid 16 of the injector body 11. For this purpose, a ring seal 17 may be provided between the lid 16 and the seat of the lid.

Der Injektor 10 weist ferner eine Druckverteilkammer 18 auf, die sich in einer Längsrichtung L im Bereich zwischen dem Injektorkörper 11 und dem Injektorboden 12 erstreckt. Die Druckverteilkammer 18 wird somit gemeinsam vom Injektorkörper 11 und vom Injektorboden 12 gebildet. Hierfür ist in dem Injektorboden 12 eine zum Injektorkörper 11 hin offene Ausnehmung 19 eingebracht. In dem Injektorkörper 11 ist entsprechend eine zum Injektorboden 12 hin offene Ausnehmung 20 eingebracht. Nach dem Verbinden von Injektorkörper 11 und Injektorboden 12 bilden die beiden Ausnehmungen 19, 20 gemeinsam die Druckverteilkammer 18. Zur Herstellung der Fluiddichtheit zwischen Injektorkörper 11 und Injektorboden 12 können eine oder mehrere Dichtungseinrichtungen vorhanden sein, die in der Zeichnung nicht näher dargestellt sind.The injector 10 also has a pressure distribution chamber 18, which extends in a longitudinal direction L in the region between the injector body 11 and the injector base 12. The pressure distribution chamber 18 is thus formed jointly by the injector body 11 and the injector base 12. For this purpose, a recess 19 which is open towards the injector body 11 is introduced into the injector base 12. In the injector body 11, a recess 20 which is open towards the injector bottom 12 is correspondingly introduced. After connecting injector body 11 and injector base 12, the two recesses 19, 20 together form the pressure distribution chamber 18. To produce the fluid-tightness between injector body 11 and injector base 12, one or more sealing devices may be present, which are not shown in detail in the drawing.

Die Einströmkammer 13 und die Druckverteilkammer 18 sind fluidisch mit Hilfe einer Mehrzahl von Verbindungskanälen 23 verbunden. Die Verbindungskanäle 23 erstrecken sich zwischen einer Eingangsmündung 24 in der Einströmkammer 13 und einer Ausgangsmündung 25 in der Druckverteilkammer 18. Beim bevorzugten Ausführungsbeispiel sind die Verbindungskanäle 23 durch zylindrische Bohrungen im Injektorkörper 11 gebildet. Die Längsachsen 26 der Verbindungskanäle 23 verlaufen im Wesentlichen rechtwinklig zur Längsrichtung L des Injektors 10. Die Ausgangsmündung 25 befindet sich somit in der Ausnehmung 20, die den von Injektorkörper 11 begrenzten Teil der Druckverteilkammer 18 bildet.The inflow chamber 13 and the pressure distribution chamber 18 are fluidly connected by means of a plurality of connection channels 23. The connection channels 23 extend between an inlet mouth 24 in the inflow chamber 13 and an outlet mouth 25 in the pressure distribution chamber 18. In the preferred embodiment, the connection channels 23 are formed by cylindrical bores in the injector body 11. The longitudinal axes 26 of the connecting channels 23 extend substantially at right angles to the longitudinal direction L of the injector 10. The outlet orifice 25 is thus located in the recess 20, which forms the part of the pressure distribution chamber 18 delimited by the injector body 11.

Im Injektorboden 12 ist eine Austrittsöffnung 30 vorgesehen. Sie erstreckt sich in Längsrichtung L und ist mit der Druckverteilkammer 18 fluidisch verbunden. Anschließend an die Druckverteilkammer 18 hat die Austrittsöffnung 30 einen schlitzförmigen Abschnitt 31 an den sich ein konischer Abschnitt 32 anschließt. Im Querschnitt nach Figur 2a gesehen hat die Austrittsöffnung 30 insgesamt eine Trichterförmige Gestalt. Die dem Injektorkörper 11 abgewandte Seite des Injektorbodens 12 bildet eine Austrittseite 33 des Injektors 10. Der konische Abschnitt 32 der Austrittsöffnung 30 ist zur Austrittsseite 33 hin offen. Eine Längsmittelebene 34 unterteilt die Austrittsöffnung 30 mittig. Beim bevorzugten Ausführungsbeispiel ist die Austrittsöffnung 30 symmetrisch zur Längsmittelebene 34 ausgeführt.In the injector floor 12, an outlet opening 30 is provided. It extends in the longitudinal direction L and is fluidically connected to the pressure distribution chamber 18. Subsequent to the pressure distribution chamber 18, the outlet opening 30 has a slot-shaped portion 31 to which a conical Section 32 connects. In cross section FIG. 2a seen the outlet opening 30 has a funnel-shaped overall. The side facing away from the injector body 11 of the injector base 12 forms an outlet side 33 of the injector 10. The conical portion 32 of the outlet opening 30 is open to the outlet side 33. A longitudinal center plane 34 divides the outlet opening 30 centrally. In the preferred embodiment, the outlet opening 30 is designed symmetrically to the longitudinal center plane 34.

Im Übergangsbereich zwischen der Druckverteilkammer 18 und der Austrittsöffnung 30 ist eine Aufnahme 35 für eine Düsenfolie 36 vorgesehen. Die Düsenfolie 36 weist eine Vielzahl von Düsenöffnungen 37 auf, die in Längsrichtung L insbesondere regelmäßig beabstandet angeordnet sind. Im Düsenstreifen 36 können in Längsrichtung L eine oder auch mehrere Reihen von Düsenöffnungen 37 nebeneinander angeordnet sein. Die Düsenöffnungen 37 durchsetzen die Düsenfolie 36 vollständig. Bei in die Aufnahme 35 eingesetzter Düsenfolie 36 befinden sich die Düsenöffnungen 37 zwischen der Druckverteilkammer 18 und der Austrittsöffnung 30. Das in der Druckverteilkammer 18 unter Druck bereit gestellte Medium, im Ausführungsbeispiel Wasser, strömt durch die Düsenöffnungen 37 und wird dadurch zu feinen nadelartigen Strahlen 38, Wasserstrahlen geformt, die in Figur 1 schematisch punktiert dargestellt sind. Die Aufnahme 35 enthält einen Sitz für die Düsenfolie 36, in dem eine ringförmige Dichtung 29 angeordnet ist, um ein Umströmen der Düsenfolie zu verhindern. Das Wasser muss daher durch die Düsenöffnungen 37 fließen.In the transition region between the pressure distribution chamber 18 and the outlet opening 30, a receptacle 35 for a nozzle foil 36 is provided. The nozzle foil 36 has a plurality of nozzle openings 37, which are arranged in the longitudinal direction L in particular regularly spaced. In the nozzle strip 36 one or more rows of nozzle openings 37 can be arranged next to one another in the longitudinal direction L. The nozzle openings 37 completely penetrate the nozzle foil 36. When inserted into the receptacle 35 nozzle film 36, the nozzle openings 37 are located between the pressure distribution chamber 18 and the outlet opening 30. The provided in the pressure distribution chamber 18 under pressure medium, water in the embodiment, flows through the nozzle openings 37 and thereby becomes fine needle-like rays 38th , Water jets shaped in FIG. 1 are shown schematically dotted. The receptacle 35 contains a seat for the nozzle foil 36, in which an annular seal 29 is arranged, in order to prevent a flow around the nozzle foil. The water must therefore flow through the nozzle openings 37.

Die Verbindungskanäle 23 verlaufen beispielsgemäß vollständig außerhalb der Längsmittelebene 34 der Austrittsöffnung 30. Die Längsachsen 26 der Verbindungskanäle 23 erstrecken sich parallel zur Längsmittelebene 34 durch die Austrittsöffnung 30 mit Abstand dazu. Bei den hier beschriebenen bevorzugten Ausführungsbeispielen des Injektors 10 befinden sich die Eingangsmündungen 24 seitlich quer zur Längsrichtung L versetzt zu einer Längsmittelebene 39 durch die Einströmkammer 13 (Figur 2a).The connecting channels 23 extend, for example, completely outside the longitudinal center plane 34 of the outlet opening 30. The longitudinal axes 26 of the connecting channels 23 extend parallel to the longitudinal center plane 34 the outlet opening 30 at a distance. In the preferred embodiments of the injector 10 described here, the inlet openings 24 are laterally transversely to the longitudinal direction L offset to a longitudinal center plane 39 through the inflow chamber 13 (FIGS. FIG. 2a ).

Zwischen der Eingangsmündung 24 und der Austrittsöffnung 30 definieren der Verbindungskanal 23 und die Druckverteilkammer 18 einen Strömungsweg 40 für das zwischen Einströmkammer 13 und Austrittsöffnung 30 fließende Wasser. In diesem Strömungsweg 40 ist eine erste Umlenkstelle 41 vorhanden, an der die Strömungsrichtung des Wassers geändert wird. Dadurch wird verhindert, dass ein geradliniger Strömungsweg zwischen der Eingangsmündung 24 und der Austrittsöffnung 30 möglich ist.Between the inlet mouth 24 and the outlet opening 30, the connecting channel 23 and the pressure distribution chamber 18 define a flow path 40 for the water flowing between the inflow chamber 13 and the outlet opening 30. In this flow path 40 there is a first deflection point 41, at which the flow direction of the water is changed. This prevents that a straight flow path between the inlet mouth 24 and the outlet opening 30 is possible.

Die erste Umlenkstelle 41 ist von einem ersten Wandabschnitt 45 der Druckverteilkammer 18 gebildet, der eine erste Umlenkfläche 46 und eine zweite Umlenkfläche 61 umfasst. Diese erste Umlenkfläche 46 befindet sich stromabwärts gegenüber der Ausgangsmündung 25 und verläuft zumindest abschnittsweise schräg oder quer zur Strömungsrichtung des aus der Ausgangsmündung 25 ausströmenden Mediums. Die Umlenkfläche 46 ist an der Außenseite des Verbindungskanals 23 angeordnet. Beim Ausführungsbeispiel ist die erste Umlenkfläche 46 im Injektorboden 12 vorgesehen und bildet daher einen Wandabschnitt der in den Injektorboden 12 eingebrachten Ausnehmung 19. Die erste Umlenkfläche 46 verläuft in Längsrichtung L entlang der Druckverteilkammer 18. Sie ist konkav um eine in Längsrichtung L verlaufende Achse gekrümmt. Der Krümmungsradius kann abhängig von den räumlichen Verhältnissen des Injektors 10 bestimmt werden. Die zweite Umlenkfläche 61 der ersten Umlenkstelle 41 ist in Strömungsrichtung radial gegenüber der ersten Umlenkfläche 45 angeordnet. Diese zweite Umlenkfläche 61 ist als gerade ebene Fläche ausgebildet, die in einem spitzen Winkel zu der Längsachse 26 des Verbindungskanals 23 angeordnet ist und in Längsrichtung L entlang der Druckverteilkammer 18 verläuft. Die Strömungsrichtung des Mediums wird durch das Zusammenwirken der ersten Umlenkfläche 46 und der zweiten Umlenkfläche 61 bestimmt.The first deflection point 41 is formed by a first wall section 45 of the pressure distribution chamber 18, which comprises a first deflection surface 46 and a second deflection surface 61. This first deflection surface 46 is located downstream of the outlet orifice 25 and runs at least in sections obliquely or transversely to the flow direction of the medium flowing out of the outlet orifice 25. The deflection surface 46 is arranged on the outside of the connection channel 23. In the exemplary embodiment, the first deflection surface 46 is provided in the injector base 12 and therefore forms a wall portion of the recess 19 introduced into the injector base 12. The first deflection surface 46 extends in the longitudinal direction L along the pressure distribution chamber 18. It is concavely curved about an axis extending in the longitudinal direction L. The radius of curvature can be determined depending on the spatial relationships of the injector 10. The second deflection surface 61 of the first deflection point 41 is arranged radially opposite the first deflection surface 45 in the flow direction. This second deflection surface 61 is considered straight formed flat surface which is arranged at an acute angle to the longitudinal axis 26 of the connecting channel 23 and extends in the longitudinal direction L along the pressure distribution chamber 18. The flow direction of the medium is determined by the interaction of the first deflection surface 46 and the second deflection surface 61.

Alternativ zu den veranschaulichten Ausführungsbeispielen kann die erste Umlenkfläche 46 auch einen oder mehrere ebene Flächenabschnitte aufweisen oder von einen oder mehreren ebenen Flächenabschnitten gebildet sein. Die zweite Umlenkfläche 61 kann gekrümmt beispielsweise konkav oder konvex ausgebildet sein. Bevorzugt ist das beide Umlenkflächen 46, 61 kantenlos ausgeführt sind.As an alternative to the illustrated exemplary embodiments, the first deflection surface 46 may also have one or more planar surface sections or be formed by one or more planar surface sections. The second deflection surface 61 may be curved, for example concave or convex. Preferably, this is both deflection surfaces 46, 61 are designed edgeless.

Die erste Umlenkstelle 41 befindet sich in axialer Verlängerung der Verbindungskanäle 23. Die Längsachsen 26 der Verbindungskanäle 23 schneiden die erste Umlenkfläche 46 des ersten Wandabschnitts 45 der ersten Umlenkstelle 41. Die erste Umlenkfläche 46 wird nicht durch ein zusätzliches Bauteil gebildet, sondern entsteht bei der Herstellung der Druckverteilkammer 18. Der Injektor wird ausschließlich vom Injektorkörper 11 und dem Injektorboden 12 gebildet. Ein zusätzliches, separates Bauteil das die Umlenkfläche 46 aufweist ist nicht notwendig.The first deflection point 41 is located in the axial extension of the connection channels 23. The longitudinal axes 26 of the connection channels 23 intersect the first deflection surface 46 of the first wall section 45 of the first deflection point 41. The first deflection surface 46 is not formed by an additional component but arises during manufacture the pressure distribution chamber 18. The injector is formed exclusively by the injector body 11 and the injector base 12. An additional, separate component which has the deflection surface 46 is not necessary.

Stromabwärts der ersten Umlenkstelle 41 ist beispielsgemäß eine zweite Umlenkstelle 49 im Strömungsweg 40 vorhanden. Die zweite Umlenkstelle 49 ist von einem zweiten Wandabschnitt 50 der Druckverteilkammer 18 gebildet, der eine erste Umlenkfläche 51 und eine zweite Umlenkfläche 62 umfasst. Die erste Umlenkfläche 51 der zweiten Umlenkstelle 49 befindet sich am Injektorkörper 11. Sie ist Teil der in den Injektorkörper 11 eingebrachten Ausnehmung 20. Bei den hier beschriebenen Ausführungsbeispielen ist die erste Umlenkfläche 51 konkav gekrümmt ausgestaltet und erstreckt sich in Längsrichtung L der Druckverteilkammer 18. Die erste Umlenkfläche 51 ist gegenüber der ersten Umlenkfläche 46 der ersten Umlenkstelle 41 seitlich versetzt. Die Längsmittelebene 34 durch die Austrittsöffnung 30 kann die erste Umlenkfläche 51 schneiden. Bei den hier veranschaulichten Ausführungsformen grenzt die erste Umlenkfläche 51 unmittelbar an die Längsmittelebene 34 an. Die zweite Umlenkfläche 62 der zweiten Umlenkstelle 49 ist am Injektorboden 12 ausgebildet und ist Teil der am Injektorboden 12 ausgebildeten Ausnehmung 19. Die zweite Umlenkfläche 62 ist durch eine gerade ebene Fläche gebildet und erstreckt sich entlang der Längsrichtung L der Druckverteilkammer 18. Die erste und die zweite Umlenkfläche 51,62 ist oberhalb der Aufnahme 35 für den Düsenstreifen 36 angeordnet. Die Strömungsrichtung des Mediums wird durch das Zusammenwirken der ersten Umlenkfläche 51 und der zweiten Umlenkfläche 62 bestimmt.Downstream of the first deflection point 41, according to the example, a second deflection point 49 is present in the flow path 40. The second deflection point 49 is formed by a second wall section 50 of the pressure distribution chamber 18, which comprises a first deflection surface 51 and a second deflection surface 62. The first deflection surface 51 of the second deflection point 49 is located on the injector body 11. It is part of the recess 20 introduced into the injector body 11. In the exemplary embodiments described here, the first deflection surface is 51 has a concave curvature and extends in the longitudinal direction L of the pressure distribution chamber 18. The first deflection surface 51 is offset laterally relative to the first deflection surface 46 of the first deflection point 41. The longitudinal center plane 34 through the outlet opening 30 can intersect the first deflection surface 51. In the embodiments illustrated here, the first deflection surface 51 directly adjoins the longitudinal center plane 34. The second deflection surface 62 of the second deflection point 49 is formed on the injector base 12 and is part of the recess 19 formed on the injector base 12. The second deflection surface 62 is formed by a flat surface and extends along the longitudinal direction L of the pressure distribution chamber 18. Die erste second deflection surface 51,62 is disposed above the receptacle 35 for the nozzle strip 36. The flow direction of the medium is determined by the interaction of the first deflection surface 51 and the second deflection surface 62.

Beide erste Umlenkflächen 46, 51 haben die Gestalt einer in Längsrichtung L verlaufenden Rinne.Both first deflection surfaces 46, 51 have the shape of a channel running in the longitudinal direction L.

Die Wasserströmung entlang des Strömungswegs 40 hat somit einen zunächst gradlinigen Verlauf durch den Verbindungskanal 23 bis zur ersten Umlenkstelle 41. Dort wird die Strömung quer zur Längsachse 26 des Verbindungskanals 23 und quer zur Längsrichtung L seitlich abgelenkt. Weiter stromabwärts befindet sich die zweite Umlenkstelle 49, die das Wasser in Richtung der Austrittsöffnung 30 zum Düsenstreifen 36 hin umlenkt, wodurch sich nach der zweiten Umlenkstelle 49 eine Strömungsrichtung ergibt, die in etwa parallel zur Austrittsrichtung der Wasserstrahlen 38 bzw. parallel zur Längsmittelebene 34 durch die Austrittsöffnung 30 verläuft. Der Strömungsweg 40 ist daher im Wesentlichen stufenförmig.The water flow along the flow path 40 thus has an initially straight course through the connecting channel 23 to the first deflection point 41. There, the flow is deflected laterally transversely to the longitudinal axis 26 of the connecting channel 23 and transversely to the longitudinal direction L. Further downstream, there is the second deflection point 49, which deflects the water in the direction of the outlet opening 30 to the nozzle strip 36, resulting in a flow direction after the second deflection point 49, which is approximately parallel to the outlet direction of the water jets 38 and parallel to the longitudinal center plane 34 the outlet opening 30 extends. The flow path 40 is therefore substantially stepped.

Im Strömungsweg 40 können an Wänden oder Wandabschnitten der Verbindungskanäle 23 und/oder der Druckverteilkammer 18 strömungsbeeinflussende Unebenheiten 52 insbesondere regelmäßig verteilt angeordnet sein. Solche Unebenheiten 52 können durch konkave Vertiefungen und/oder hervorstehende Noppen gebildet sein. Vorzugsweise sind solche Unebenheiten 52 zumindest an Wandabschnitten der Druckverteilkammer 18 vorhanden, insbesondere an einer oder mehreren der Umlenkflächen 46, 61, 51, 62, wie dies in Figur 2b am Beispiel der ersten Umlenkstelle 41 schematisch veranschaulicht ist.In the flow path 40, flow-influencing unevennesses 52, in particular regularly distributed, can be arranged on walls or wall sections of the connection channels 23 and / or the pressure distribution chamber 18. Such bumps 52 may be formed by concave depressions and / or protruding nubs. Such unevennesses 52 are preferably present at least on wall sections of the pressure distribution chamber 18, in particular on one or more of the deflection surfaces 46, 61, 51, 62, as shown in FIG FIG. 2b is illustrated schematically by the example of the first deflection point 41.

In Figur 3 ist ein gegenüber den Figuren 1 und 2 abgewandeltes Ausführungsbeispiel des Injektors 10 veranschaulicht. Der wesentliche Unterschied besteht darin, dass die Längsmittelebene 39 durch die Einströmkammer 13 mit der Längsmittelebene 34 durch die Austrittsöffnung 30 eine gemeinsame Ebene bildet. Die Austrittsöffnung 30 ist somit mittig relativ zur Einströmkammer 13 angeordnet. Im Übrigen wird auf die Beschreibung des ersten Ausführungsbeispiels gemäß der Figuren 1 und 2 verwiesen.In FIG. 3 is one opposite the FIGS. 1 and 2 modified embodiment of the injector 10 illustrated. The essential difference is that the longitudinal center plane 39 forms a common plane through the inflow chamber 13 with the longitudinal center plane 34 through the outlet opening 30. The outlet opening 30 is thus arranged centrally relative to the inflow chamber 13. Incidentally, the description of the first embodiment according to the FIGS. 1 and 2 directed.

Ein weiteres Ausführungsbeispiel des Injektors 10 geht aus Figur 4 hervor. Im Unterschied zu den bisherigen Ausführungsformen sind hier die Verbindungskanäle 23 in Längsrichtung L nicht in einer Reihe, sondern in zwei beabstandeten Reihen 55 (Figur 6 und 7) angeordnet. Beide Reihen 55 sind von der Längsmittelebene 39 durch die Einströmkammer 13 seitlich beabstandet, so dass die Längsachsen 26 der Verbindungskanäle 23 parallel und mit Abstand zur Längsmittelebene 39 verlaufen. Die Längsmittelebene 39 durch die Einströmkammer 13 unterteilt den Injektorkörper 11 dabei in zwei Teile, wobei beide Teile jeweils eine Reihe 55 von Verbindungskanälen 23 aufweisen. Die Verbindungskanäle 23 sind also zu beiden Seiten der Längsmittelebene 39 durch die Einströmkammer 13 angeordnet.Another embodiment of the injector 10 goes out FIG. 4 out. In contrast to the previous embodiments, here the connecting channels 23 are not in a row in the longitudinal direction L but in two spaced rows 55 (FIG. FIG. 6 and 7 ) arranged. Both rows 55 are laterally spaced from the longitudinal center plane 39 by the inflow chamber 13, so that the longitudinal axes 26 of the connecting channels 23 extend parallel to and at a distance from the longitudinal center plane 39. The longitudinal center plane 39 through the inflow chamber 13 divides the injector body 11 into two parts, wherein both parts each have a row 55 of connecting channels 23. The connecting channels 23 are thus on both sides of the longitudinal center plane 39 through arranged the inflow chamber 13.

Der Strömungsweg 40 durch einen der Verbindungskanäle 23 in die Druckverteilkammer 18 hat dabei den zuvor beschriebenen Verlauf. Auch hier sind im Anschluss an jeden Verbindunskanal 23 in der Druckverteilkammer 18 sowohl einer erste Umlenkstelle 41, als auch eine zweite Umlenkstelle 49 vorgesehen, so dass das in die Druckverteilkammer 18 einströmende Wasser bei jedem Strömungsweg 40 zwei mal umgelenkt wird, bevor es den Düsenstreifen 36 bzw. die Austrittsöffnung 30 erreicht. Hierzu kann auf die vorstehende Beschreibung verwiesen werden. Bei der doppelreihigen Anordnung der Verbindungskanäle 23 treffen die Strömungen aus der einen Reihe 55 mit den Strömungen aus der anderen Reihe 55 in der Druckverteilkammer 18 zusammen. Die Strömungsrichtungen des aus der einen Reihe 55 einströmenden Wassers ist verschieden von der Strömungsrichtung des von der anderen Reihe 55 einströmenden Wassers.The flow path 40 through one of the connecting channels 23 into the pressure distribution chamber 18 has the course described above. Again, following each Verbindunskanal 23 in the pressure distribution chamber 18, both a first deflection 41, and a second deflection 49 are provided so that the inflowing into the pressure distribution chamber 18 water at each flow path 40 is deflected twice before it the nozzle strip 36th or reaches the outlet opening 30. For this purpose, reference may be made to the above description. In the double row arrangement of the connection channels 23, the flows from one row 55 coincide with the flows from the other row 55 in the pressure distribution chamber 18. The flow directions of the water flowing in from one row 55 are different from the flow direction of the water flowing in from the other row 55.

Wie dies in den Figuren 6 und 7 schematisch veranschaulicht ist, können die beiden Reihen 55 von Verbindungskanälen 23 symmetrisch gegenüber der Längsmittelebene 39 der Einströmkammer 13 angeordnet werden. Die Verbindungskanäle 23 sind dabei paarweise angeordnet, so dass ein Verbindungskanal 23 eines Paars 56 auf der einen Seite der Längsmittelebene 39 und der jeweils andere Verbindungskanal 23 dieses Paars 56 auf der anderen Seite der Längsmittelebene 39 angeordnet ist (Figur 6). Bei dieser paarweisen symmetrischen Anordnung ist es möglich, die beiden Wasserströme eines Paars 56 von Verbindungskanälen 23 in der Druckverteilkammer 18 zu kreuzen oder gegeneinander zu richten, wodurch eine gute Wasserdurchmischung erreicht werden kann.Like this in the FIGS. 6 and 7 is schematically illustrated, the two rows 55 of connecting channels 23 can be arranged symmetrically with respect to the longitudinal center plane 39 of the inflow chamber 13. The connection channels 23 are arranged in pairs, so that a connection channel 23 of a pair 56 is arranged on one side of the longitudinal center plane 39 and the respective other connection channel 23 of this pair 56 on the other side of the longitudinal center plane 39 ( FIG. 6 ). In this pairwise symmetrical arrangement, it is possible to cross or direct the two water streams of a pair 56 of connection channels 23 in the pressure distribution chamber 18, whereby a good water mixing can be achieved.

In Figur 7 ist eine alternative Anordnungsmöglichkeit der beiden Reihen 55 von Verbindungskanälen 23 gezeigt. Im Unterschied zu der Ausführungsvariante nach Figur 6 sind die beiden Reihen 55 in Längsrichtung L gesehen versetzt zueinander angeordnet. Die über die beiden Reihen 55 von Verbindungskanälen 23 in die Druckverteilkammer 18 eintretenden Strömungen kreuzen sich nicht in einer rechtwinkelig zur Längsrichtung L aufgespannten gemeinsamen Ebene. Die Wasserströmungen strömen in Längsrichtung L versetzt in die Druckverteilkammer 18. Dadurch kann sich das Wasser die einzelnen Ströme quer zur jeweiligen Strömungsrichtung in der Druckverteilkammer 18 gut ausdehnen.In FIG. 7 is an alternative arrangement possibility the two rows 55 of connecting channels 23 shown. In contrast to the embodiment according to FIG. 6 are the two rows 55 seen in the longitudinal direction L offset from each other. The flows entering the pressure distribution chamber 18 via the two rows 55 of connection channels 23 do not intersect in a common plane defined at right angles to the longitudinal direction L. The water flows in the longitudinal direction L flow into the pressure distribution chamber 18. As a result, the water, the individual streams extend transversely to the respective flow direction in the pressure distribution chamber 18 well.

Bei den Ausführungsbeispielen gemäß der Figuren 1-4 des Injektors 10 weist die Aufnahme 35 für den Düsenstreifen 36 an beiden Längsseiten schlitzartige Vertiefungen 60 auf, so dass die eingesetzte Düsenfolie 36 an ihren beiden Längsseiten in die Vertiefung 60 eingreift. Zum Einsetzen der Düsenfolie 36 kann diese in Längsrichtung L in den Injektor 10 eingeschoben werden. Beim Ausführungsbeispiel nach Figur 5 sind derartige Vertiefungen 60 nicht vorhanden. Die Aufnahme 35 ist durch eine Nut mit rechteckförmigem Querschnitt gebildet. Halte- oder Klemmmittel zum Andrücken der Düsenfolie 36 auf die Dichtung 29 können vorhanden sein, sind in der Zeichnung jedoch nicht näher dargestellt.In the embodiments according to the Figures 1-4 of the injector 10, the receptacle 35 for the nozzle strip 36 on both longitudinal sides slit-like recesses 60, so that the inserted nozzle sheet 36 engages on its two longitudinal sides in the recess 60. To insert the nozzle foil 36, it can be inserted in the longitudinal direction L into the injector 10. According to the embodiment FIG. 5 such recesses 60 are not present. The receptacle 35 is formed by a groove with a rectangular cross-section. Holding or clamping means for pressing the nozzle foil 36 on the seal 29 may be present, but are not shown in detail in the drawing.

Die Erfindung betrifft einen Injektor für eine Textilbearbeitungsmaschine zur Herstellung von Vliesstoff. In einem Injektorkörper 11 ist eine Einströmkammer 13 vorgesehen, in der unter Druck stehendes Medium bereitgestellt wird. Ober mehrere Verbindungskanäle 23 ist die Einströmkammer mit einer Druckverteilkammer 18 fluidisch verbunden. Die Verbindungskanäle 23 sind von zylindrischen Bohrungen gebildet, die in den Injektorkörper 11 eingebracht sind. Die Verbindungskanäle 23 sind in einer oder zwei Reihen versetzt zur Längsmittelebene 39 der Einströmkammer 13 angeordnet. Die sich an die Verbindungskanäle 23 anschließende Druckverteilkammer 18 weist einen ersten Wandabschnitt 45 auf, der eine erste Umlenkfläche 46 bildet. Diese Umlenkfläche 46 verläuft zumindest abschnittsweise schräg oder quer zur Längsachse 26 der Verbindungskanäle 23. Mittels der ersten Umlenkfläche 46 wird das aus den Verbindungskanälen 23 ausströmende Medium umgelenkt, so dass es seine Richtung ändert, bevor es stromabwärts die Düsenöffnungen 37 eines Düsenstreifens 36 erreicht. Ein direktes geradliniges Anströmen der Düsenöffnungen 37 aus der Einströmkammer 13 ist somit nicht möglich. Durch die Düsenöffnungen 37 werden Wasserstrahlen 38 gebildet, die über eine Austrittsöffnung 30 vom Injektor 10 ausgestoßen werden.The invention relates to an injector for a textile processing machine for producing nonwoven fabric. In an injector body 11, an inflow chamber 13 is provided, is provided in the pressurized medium. Above several connecting channels 23, the inflow chamber is fluidically connected to a pressure distribution chamber 18. The connecting channels 23 are formed by cylindrical bores which are introduced into the injector body 11. The connection channels 23 are in one or two rows offset from the longitudinal center plane 39 of the inflow chamber 13 is arranged. The pressure distribution chamber 18 adjoining the connection channels 23 has a first wall section 45, which forms a first deflection surface 46. By means of the first deflection surface 46, the medium flowing out of the connection channels 23 is deflected so that it changes direction before it reaches the nozzle openings 37 of a nozzle strip 36 downstream. A direct rectilinear flow against the nozzle openings 37 from the inflow chamber 13 is thus not possible. Through the nozzle openings 37 water jets 38 are formed, which are ejected via an outlet opening 30 from the injector 10.

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

1010
Injektorinjector
1111
Injektorkörperinjector
1212
Injektorbodeninjector base
1313
Einströmkammerinflow
1414
Einströmöffnunginflow
1515
Druckquellepressure source
1616
Deckelcover
1717
Ringdichtungring seal
1818
Druckverteilkammerpressure distribution
1919
Ausnehmung in 12Recess in 12
2020
Ausnehmung in 11Recess in 11
2323
Verbindungskanalconnecting channel
2424
Eingangsmündungentrance mouth
2525
Ausgangsmündungexit orifice
2626
Längsachse v. 23Longitudinal axis v. 23
2929
ringförmige Dichtungannular seal
3030
Austrittsöffnungoutlet opening
3131
schlitzförmiger Abschnittslit-shaped section
3232
konischer Abschnittconical section
3333
Austrittsseiteexit side
3434
Längsmittelebene v. 30Longitudinal median plane v. 30
3535
Aufnahmeadmission
3636
Düsenstreifen, DüsenfolieNozzle strip, nozzle foil
3737
Düsenöffnungnozzle opening
3838
Strahl, WasserstrahlJet, water jet
3939
Längsmittelebene v. 13Longitudinal median plane v. 13
4040
Strömungswegflow
4141
erste Umlenkstellefirst deflection point
4545
erster Wandabschnitt v. 18first wall section v. 18
4646
erste Umlenkfläche von 41first deflection of 41
4949
zweite Umlenkstellesecond deflection point
5050
zweiter Wandabschnitt v. 18second wall section v. 18
5151
erste Umlenkfläche von 49first deflection of 49
5252
Unebenheitenbumps
5555
Reihe von VerbindungskanälenRow of connecting channels
5656
Paar von VerbindungskanälenPair of connecting channels
6060
Vertiefungdeepening
6161
Zweite Umlenkfläche von 41Second deflection of 41
6262
Zweite Umlenkfläche von 49Second deflection of 49

Claims (15)

  1. Injector for a textile processing machine,
    with an admission chamber (13), which is connected to a pressure source (15),
    with at least one connection channel (23), which runs into the admission chamber (13) at an inlet port (24) and runs into a pressure distribution chamber (18) at an outlet port (25),
    with an outlet (30), which is fluidically connected to the pressure distribution chamber (18),
    with a seating (35) for a nozzle foil (36), which has a plurality of nozzle orifices (37) to form jets (38), wherein the nozzle foil (36) inserted into the seating forms jets (38), which are discharged through the outlet (30) of the injector (10),
    wherein the flow path (40) predetermined between the admission chamber (13) and the outlet (30) by the connection channel (23) and the pressure distribution chamber (18) has at least one first deflection point (41), at which the water flowing through changes its flow direction and wherein the first deflection point (41) is formed by a wall section (45) of the connection channel (23) and/or the pressure distribution chamber (18).
  2. Injector according to claim 1, characterised in that the at least one connection channel (23) is formed by a hole, in particular a cylindrical hole.
  3. Injector according to claim 1, characterised in that the at least one connection channel (23) runs outside the longitudinal centre plane (34) of the outlet (30).
  4. Injector according to claim 1, characterised in that multiple connection channels (23) are provided, wherein on each side of the longitudinal centre plane (34) through the outlet (30) at least one of the connection channels (23) is spaced from the longitudinal centre plane (34).
  5. Injector according to claim 1, characterised in that downstream of the outlet (25) a first deflecting surface (46), which is arranged at an angle or transversely to the outflow direction of the medium flowing out of the outlet (25), is provided in the pressure distribution chamber (18) at the first deflection point (41).
  6. Injector according to claim 5, characterised in that the first deflecting surface (46) is formed on a first wall section (45) of the pressure distribution chamber (18).
  7. Injector according to claim 5, characterised in that the first deflecting surface (46) has a curvature, which determines the deflection direction of the flow.
  8. Injector according to claim 1, characterised in that a further second deflection point (49) located in the pressure distribution chamber (18) is present downstream of the first deflection point (41) in the direction of flow (40).
  9. Injector according to claim 1, characterised in that the admission chamber (13) and the at least one connection channel (23) are provided in an injector body (11).
  10. Injector according to claim 9, characterised in that an injector base (12) having the outlet (30) is connected to the injector body (11).
  11. Injector according to claim 10, characterised in that the pressure distribution chamber (18) is delimited both by the injector body (11) and by the injector base (12).
  12. Injector according to claim 1, characterised in that the first deflection point (41) is formed by a first deflecting surface (45) and a second deflecting surface (61).
  13. Injector according to claim 11 and 12, characterised in that the first deflecting surface (46) of the first deflection point (41) is provided on the injector base (12) and the second deflecting surface (61) of the first deflection point (41) is provided on the injector body (11).
  14. Injector according to claim 8, characterised in that the second deflection point (49) is formed by a first deflecting surface (51) and a second deflecting surface (62).
  15. Injector according to claim 9 and 14, characterised in that a first deflecting surface (51) is provided on the injector body (11) at the second deflection point (49).
EP09012009A 2009-09-22 2009-09-22 Injector for a textile processing machine Not-in-force EP2302120B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP09012009A EP2302120B1 (en) 2009-09-22 2009-09-22 Injector for a textile processing machine
US12/884,299 US20110067214A1 (en) 2009-09-22 2010-09-17 Injector for a textile processing machine
JP2010211219A JP5714282B2 (en) 2009-09-22 2010-09-21 Injector for textile processing machine
CN201010298290.4A CN102021752B (en) 2009-09-22 2010-09-21 Injector for textile processing machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09012009A EP2302120B1 (en) 2009-09-22 2009-09-22 Injector for a textile processing machine

Publications (2)

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EP2302120A1 EP2302120A1 (en) 2011-03-30
EP2302120B1 true EP2302120B1 (en) 2012-06-20

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EP09012009A Not-in-force EP2302120B1 (en) 2009-09-22 2009-09-22 Injector for a textile processing machine

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US (1) US20110067214A1 (en)
EP (1) EP2302120B1 (en)
JP (1) JP5714282B2 (en)
CN (1) CN102021752B (en)

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EP2302119B1 (en) * 2009-09-18 2012-06-20 Groz-Beckert KG Nozzle film for a nozzle bar with connectable film segments
CN102747538B (en) * 2012-05-29 2015-04-29 重庆国际复合材料有限公司 Overflow groove system
CN103498288A (en) * 2013-09-29 2014-01-08 无锡众望四维科技有限公司 Spunlace head of spunlace fibermesh fixing machine
CN103498289B (en) * 2013-09-29 2015-11-18 无锡纳润特科技有限公司 The type high pressure jet head of water thorn fixed network machine
WO2015077439A1 (en) 2013-11-20 2015-05-28 Trustees Of Boston University Injectable tissue supplement
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CN105155138B (en) * 2015-09-14 2018-03-16 杭州诺邦无纺股份有限公司 Water jet Anti-splash automatic clean sizing device and automatic clean paste-making method
ES2670918T3 (en) 2016-02-11 2018-06-04 Groz-Beckert Kg Nozzle strip for a textile treatment machine
IT201600076150A1 (en) * 2016-07-20 2018-01-20 A C M Eng S R L Injector device for water jets
DE102016119483A1 (en) * 2016-10-12 2018-04-12 TRüTZSCHLER GMBH & CO. KG Nozzle bar for processing fibers with water jets
DE102016119481A1 (en) * 2016-10-12 2018-04-12 TRüTZSCHLER GMBH & CO. KG Nozzle bar for processing fibers with water jets
DE102016119480A1 (en) * 2016-10-12 2018-04-12 TRüTZSCHLER GMBH & CO. KG Nozzle bar for processing fibers with water jets
CN106436034A (en) * 2016-10-19 2017-02-22 郑州纺机工程技术有限公司 High-water-pressure water jet
DE102018104907A1 (en) * 2018-03-05 2019-09-05 TRüTZSCHLER GMBH & CO. KG Plant and method for producing a textile velor
DE202018107163U1 (en) * 2018-12-14 2020-03-13 Autefa Solutions Germany Gmbh Jet suction box

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Also Published As

Publication number Publication date
JP5714282B2 (en) 2015-05-07
CN102021752A (en) 2011-04-20
EP2302120A1 (en) 2011-03-30
US20110067214A1 (en) 2011-03-24
CN102021752B (en) 2014-11-12
JP2011080187A (en) 2011-04-21

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