EP3069794A1 - Flat-jet nozzle and use of a flat-jet nozzle - Google Patents

Flat-jet nozzle and use of a flat-jet nozzle Download PDF

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Publication number
EP3069794A1
EP3069794A1 EP16159420.5A EP16159420A EP3069794A1 EP 3069794 A1 EP3069794 A1 EP 3069794A1 EP 16159420 A EP16159420 A EP 16159420A EP 3069794 A1 EP3069794 A1 EP 3069794A1
Authority
EP
European Patent Office
Prior art keywords
central longitudinal
longitudinal axis
axis
flat jet
outlet opening
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.)
Granted
Application number
EP16159420.5A
Other languages
German (de)
French (fr)
Other versions
EP3069794B1 (en
Inventor
Tobias Huber
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.)
Lechler GmbH
Original Assignee
Lechler GmbH
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Filing date
Publication date
Application filed by Lechler GmbH filed Critical Lechler GmbH
Publication of EP3069794A1 publication Critical patent/EP3069794A1/en
Application granted granted Critical
Publication of EP3069794B1 publication Critical patent/EP3069794B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
    • B21B45/08—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing hydraulically
    • 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
    • B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
    • B05B1/04—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in flat form, e.g. fan-like, sheet-like
    • 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
    • B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
    • B05B1/04—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in flat form, e.g. fan-like, sheet-like
    • B05B1/048—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in flat form, e.g. fan-like, sheet-like having a flow conduit with, immediately behind the outlet orifice, an elongated cross section, e.g. of oval or elliptic form, of which the major axis is perpendicular to the plane of the jet
    • 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
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
    • B05B13/0421—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation with rotating spray heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
    • B05B13/0463—Installation or apparatus for applying liquid or other fluent material to moving work of indefinite length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B08B3/022—Cleaning travelling work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B08B3/026—Cleaning by making use of hand-held spray guns; Fluid preparations therefor
    • B08B3/028—Spray guns
    • 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
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3402—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to avoid or to reduce turbulencies, e.g. comprising fluid flow straightening means

Definitions

  • the invention relates to a flat jet nozzle for removing material or dirt by means of a high-pressure liquid jet in a pressure range from 100 bar, with a nozzle housing, wherein the nozzle housing forms a fluid channel with an outlet opening, wherein the fluid channel is formed to the outlet opening concentric to a central longitudinal axis of the nozzle housing and wherein the outlet opening has an elongate shape with a longer major axis and a shorter minor axis.
  • a more flexible flat jet nozzle is to be provided with regard to its space requirement and its intended use.
  • a flat jet nozzle with the features of claim 1 and a use of a flat jet nozzle with the features of claim 6 are provided for this purpose.
  • a flat fan nozzle for removing material or dirt by means of a high-pressure liquid jet in a pressure range from 100 bar with a nozzle housing, wherein the nozzle housing forms a fluid channel with an outlet opening, wherein the fluid channel is formed to the outlet opening concentric to a central longitudinal axis of the nozzle housing and wherein the Outlet opening has an elongated shape with a longer main axis and a shorter minor axis is thus provided according to the invention that a plane in which the longer major axis is located and which is perpendicular to the shorter minor axis intersects the central longitudinal axis and with the central longitudinal axis an angle between 5 ° and 175 °, in particular 5 ° to 75 °, in particular 10 ° to 45 °.
  • the elongated outlet opening is thus arranged obliquely downwards, perpendicularly or obliquely upwards to the central longitudinal axis and consequently a plane of the flat jet, which thus lies approximately centrally within the output flat jet, is arranged obliquely or perpendicular to the central longitudinal axis and intersects the central longitudinal axis.
  • a plane of the flat jet which thus lies approximately centrally within the output flat jet, is arranged obliquely or perpendicular to the central longitudinal axis and intersects the central longitudinal axis.
  • an arrangement obliquely downwards at an angle between 5 ° and 75 ° is preferred.
  • an angle between 5 ° and 175 ° can be selected.
  • the plane of the output flat jet does not necessarily correspond to the plane in which the longer main axis lies and which is arranged perpendicular to the shorter minor axis.
  • the actual exit plane of the flat jet is determined not only by the arrangement of the outlet opening, but also by the formation and especially flow of the fluid channel to the outlet opening.
  • the essential advantage of the nozzle according to the invention is that a flat jet emerging obliquely to the central longitudinal axis is provided and yet the fluid channel is formed to the outlet opening concentric to the central longitudinal axis.
  • the flat fan nozzle according to the invention can thus extremely space-saving also by small clearances, for example between transport shafts in rolling mills, are passed. Surprisingly, this also results in the oblique arrangement of the outlet opening according to the invention to the central longitudinal axis a very good spray pattern of the flat jet with high impact or large impingement of the flat jet on a sprayed surface.
  • the nozzle according to the invention makes it possible, at an angle of the outlet opening with the central longitudinal axis between 5 ° and 75 °, in particular 10 ° to 45 °, to achieve a very good spray pattern with a very good impact over the applied surface.
  • the angle of the plane of the output flat jet does not necessarily correspond to the plane of the exit opening or the plane in which the longer main axis lies and which is arranged perpendicular to the shorter minor axis.
  • the desired exit angle of the flat jet can easily be determined and adjusted by calculations or tests.
  • the outlet opening is arranged in an end portion of the fluid channel with a spherical segment-like shape.
  • the outlet opening is formed for example by cutting a spherical segment-like end portion of the fluid channel.
  • cutting can be understood that the nozzle housing is actually cut by means of a milling cutter, but it is also to be understood that it is spoken of a cutting in geometric terms, ie that the nozzle by other methods, such as injection molding and sintering or casting, will be produced.
  • the arrangement of the outlet opening in an end portion of the fluid channel with spherical segment-like shape has the considerable advantage that the outlet opening can be arranged at different angles to the central longitudinal axis, without the end portion must be changed.
  • the outlet opening has an elliptical or elliptical-like shape.
  • the flat fan nozzle according to the invention is preferably used for descaling metal parts.
  • the flat jet occurs slightly obliquely to be descaled metal surface.
  • the nozzle according to the invention this can be achieved even if the housing of the flat jet nozzle and especially the central longitudinal axis of the nozzle housing is arranged perpendicular to the surface to be descaled.
  • the flat fan nozzle according to the invention can thereby be arranged in an extremely space-saving manner.
  • a first rotational movement of the flat jet nozzle is provided about a first axis of rotation, which is arranged perpendicular to a surface to be descaled of the metal parts and at a distance from the central longitudinal axis of the nozzle housing in the inventive use.
  • a second rotational movement of the flat jet nozzle is provided about a second axis of rotation, the second axis of rotation being spaced from the first axis of rotation and also perpendicular to a surface of the metal parts to be descaled.
  • the second axis of rotation coincides with the central longitudinal axis of the nozzle housing.
  • the flat jet nozzle thus rotates once around itself, ie about the central longitudinal axis of its nozzle housing, and moreover, the nozzle housing is still rotated about an axis of rotation which is spaced from the central longitudinal axis of the nozzle housing. So it creates a superimposed rotational movement.
  • a plurality of flat jet nozzles according to the invention are arranged above the surface to be descaled and are rotated in a coordinated manner about the first and second axes of rotation, so that the surface to be descaled is completely descaled by the generated flat jets.
  • the surface to be descaled is moved in a feed direction parallel to the surface relative to the flat jet nozzle, wherein the first rotational movement and the second rotational movement are coordinated so that the flat jet generated by the flat jet nozzle always at a constant angle of 0 ° to ⁇ 45 °, in particular perpendicular, is arranged to the feed direction.
  • the flat jet generated by the flat jet nozzle or the flat jets generated by a plurality of flat jet nozzles therefore always strike the surface to be descaled so that a larger transverse dimension of the flat jets is always arranged at a constant angle, in particular perpendicular to the feed direction.
  • the incident surface of the flat jets is elongated and their longer transverse dimension is therefore arranged, for example, perpendicular to the displacement direction, whereas their shorter transverse dimension is then arranged parallel to the feed direction. This achieves maximum coverage of the surface.
  • the generated flat jets always strike the surface to be descaled at a predefined constant angle.
  • the flat jet nozzle according to the invention can, of course, in addition to the descaling of metal parts, generally be used for removing material or dirt by means of a high-pressure liquid jet.
  • the presentation of the Fig. 1 shows a flat jet nozzle 10 according to the invention, whose housing is arranged in a holder 12.
  • a high-pressure liquid for example water
  • the high-pressure liquid is supplied via a feed channel 14, which opens into a fluid channel 16 of the flat-jet nozzle 10.
  • the fluid channel 16 is arranged concentrically to a central longitudinal axis 18 of the flat jet nozzle 10 according to the invention.
  • the fluid channel extends to an outlet opening 20 concentric with the central longitudinal axis 18. Only the outlet opening 20 is arranged obliquely to the central longitudinal axis, so that the flat jet 22 generated by the flat jet nozzle 10 emerges obliquely to the central longitudinal axis 18.
  • An exit plane of the flat jet 22 is in Fig. 1 under the reference numeral 24 shown in phantom.
  • the exit plane 24 is located centrally to the exiting flat jet and is also arranged obliquely to the central longitudinal axis 18.
  • the exit plane 24 intersects the central longitudinal axis 18.
  • the fluid channel 16 extends from the mouth of the feed channel 14 initially with a constant diameter over about half its total length. After about half of its total length, a jet funnel 26 is arranged in the fluid channel 16.
  • the jet straightener 26 has a plurality of flow guide surfaces which extend radially to the central longitudinal axis 18 and extend parallel to the central longitudinal axis.
  • the beam director 26 is designed as a so-called soulless beam judge, so that therefore an area around the central longitudinal axis 18 remains free of internals.
  • the jet funnel 26 is pressed into a sleeve 40.
  • the sleeve 40 cylindrical portion 28 which has approximately the length of the Strahlrichters 26 and the same diameter as the Strahlrichter 26.
  • the cylindrical portion 28 is followed by a first frusto-conical taper 30 of the fluid channel 16.
  • This taper 30 of the fluid channel is followed by a cylindrical portion 32 which continues the diameter of the fluid channel at the end of the taper 28 to an end portion of the fluid channel 16 the end portion then the outlet opening 20 is arranged.
  • a further frusto-conical taper 33 is provided before the outlet opening 20, a further frusto-conical taper 33 is provided.
  • the end portion is formed in sections by the second taper 33.
  • the outlet opening 20 may be placed in a spherical portion which adjoins the taper 33.
  • the fluid channel 16 is formed within a nozzle housing 34, which, as has been stated, is fixed in the holder 12 and the one arranged in the holder 12 base portion 36, a arranged on the base portion 36 cap 38, a screwed into the cap 38 sleeve sleeve 40 and a nozzle mouthpiece 42 inserted into the cap 38.
  • the sleeve 40 defines the fluid channel 16 in the region of the jet director 26, the cylindrical portion 28, the taper 30 and a portion of the cylindrical portion 32 of the fluid channel.
  • the nozzle mouthpiece 42 continues the cylindrical portion 32 of the fluid channel and defines an end portion of the fluid channel 16 with the outlet opening 20.
  • the cap 38 is in turn secured by means of a union nut 41 at the base portion 36. Between the sleeve 40 and the nozzle mouthpiece 42, a seal is provided.
  • Fig. 1 Based on Fig. 1 is clearly visible that the fluid channel 16 is completely concentric with the central longitudinal axis 18 of the nozzle housing 34 of the fan jet nozzle 10. Only the outlet opening 20 is arranged obliquely to the central longitudinal axis 18, so that the flat jet 22 emerges obliquely to the central longitudinal axis 18.
  • Fig. 7 schematically shows the geometric relationships in the region of the outlet opening 20, which is arranged in the end portion 35 of the fluid channel.
  • the outlet opening 20 has in the schematic representation of Fig. 7 an elliptical shape.
  • the outlet opening 20 may have any, elongated shape, that is, for example, elliptical, elliptical or oval.
  • the outlet opening 20 may have an irregular elongated shape, such as a calculated free-form.
  • the outlet opening 20 always has a longer main axis 44 and a shorter minor axis 46. If the outlet opening 20 has an irregular shape, so corresponds to Main axis 44 of a longer transverse dimension of the outlet opening and the minor axis 46 of a shorter transverse dimension of the outlet opening 20th
  • the outlet opening 20 is now arranged to the central longitudinal axis 18, that a plane 48, in which the longer main axis 44 is located and which is arranged perpendicular to the shorter minor axis 46, the central longitudinal axis intersects.
  • the level 48 intersects in the representation of Fig. 7 at a point 50 with the central longitudinal axis 18.
  • the center line 52 passes through the intersection of the main axis 44 and the minor axis 46 and then also intersects the central longitudinal axis 18 in the point 50.
  • an imaginary incident surface 54 of the flat jet is drawn. This incident surface 54 is divided by the plane 48 in half. It should be remembered that the presentation of the Fig.
  • the incident surface 54 is not exactly divided by the plane 48 in half.
  • the real flow conditions in the fluid channel play a role.
  • the plane 48 is defined by the major axis 44 which lies within the plane 48 and the minor axis 46 which is perpendicular to the plane.
  • the plane 48 is thus defined by the arrangement of the outlet opening 20.
  • the exit opening 20 is arranged so that the plane 48 intersects the central longitudinal axis 18, in the illustration of Fig. 7 at the point 50.
  • the presentation of the Fig. 2 shows the nozzle mouth 42 against the Fig. 1 increased. Good to see is the in Fig. 2 overhead outlet opening 20.
  • the central longitudinal axis 18 of the nozzle housing is shown in dashed lines.
  • the nozzle mouthpiece is inserted into the cap 38.
  • the nozzle mouthpiece 42 may for example consist of hard metal, for example sintered hard metal, in order to achieve a good service life at the high fluid pressures from 100 bar, in which the flat fan nozzle according to the invention is used.
  • the cap 38 is applied to contact surfaces 60 of the nozzle mouthpiece 42.
  • the exiting liquid but does not come into contact with the cap 38.
  • Fig. 3 the nozzle mouthpiece 42 is shown in a view from above.
  • the outlet opening 20 which in the view of Fig. 3 has the shape of a one-sided flattened ellipse. This is by the angle of view Fig. 3 causes, in fact, the outlet opening 20 is elliptical.
  • the outlet opening 20 is disposed within a gate channel 62, which in Fig. 2 and Fig. 3 can be seen.
  • the outlet opening 20 is formed by pulling a milling cutter or a grinding wheel across the mouthpiece 42 and thereby cutting it.
  • Fig. 4 shows a view on the cutting plane BB in Fig. 2 , Evident is the gate 62 and a portion of the boundary of the outlet opening 20. Furthermore, the shape of the end portion 35 of the fluid channel can be seen.
  • Fig. 5 shows a view on the cutting plane AA in Fig. 3 ,
  • the central longitudinal axis 18 is thus within the cutting plane of the Fig. 5 ,
  • the end portion 35 of the fluid channel, in which the outlet opening 20 is located has a spherical segment-like shape.
  • the outlet opening 20 is in turn, as shown by the Fig. 7 has been explained, arranged obliquely to the central longitudinal axis 18, so that the plane 48 encloses an angle ⁇ with the central longitudinal axis.
  • This angle ⁇ can be between 5 ° and 75 °. Particularly advantageous results were achieved with an angle ⁇ between 10 ° and 45 °.
  • the high-pressure liquid to be sprayed which has a pressure from 100 bar, thus over the entire length of the fluid channel 16, see Fig. 1 , guided concentrically to the central longitudinal axis 18. Only in the end portion 35 of the nozzle mouthpiece 42, see Fig. 5 , the liquid is then deflected out of the direction of the central longitudinal axis 18 out. Surprisingly, despite the concentric to the central axis 18 concentric guidance of the high pressure fluid until immediately before the outlet opening 20, even with an oblique arrangement of the outlet opening 20 to the central longitudinal axis 18, a very good spray pattern of the output flat jet 22nd with uniformly distributed and high impact impulse over the incident surface.
  • the presentation of the Fig. 6 schematically shows a plurality of flat-jet nozzles 10 according to the invention, wherein only the respective central longitudinal axes 18, the outlet openings 20 and the respectively output flat jet 22 are schematically indicated.
  • the flat-jet nozzles 10 are arranged above a surface 66 to be descaled, which is moved in the direction of an arrow 68 relative to the flat-jet nozzles 10.
  • the flat jet nozzles 10 are arranged above and below a piece of metal to be descaled.
  • the line of sight in Fig. 6 is down from above on the surface 66.
  • the central longitudinal axes 18 of the flat-jet nozzles 10 are each perpendicular to the surface 66, so that the advancing movement 68 of the surface 66 is perpendicular to the central longitudinal axes 18 of the flat-jet nozzles 10.
  • the issued each flat rays 22 thus slightly obliquely on the surface 66, in the representation of Fig. 6 Therefore, the flat jets 22 are shown as directed obliquely downwards and against the feed direction 68.
  • Each of the flat jet nozzles 10 is rotated about the central longitudinal axis 18, which is indicated by means of a respective circular arrow.
  • each of the flat jet nozzles 10 is rotated about a rotation axis 70 which is spaced apart to the central longitudinal axis 18 of the flat jet nozzles 10 is arranged.
  • Each of the flat jet nozzles 10 thus performs two rotational movements.
  • a first rotational movement passes around the first rotational axis 70, which is arranged at a distance from the central longitudinal axis 18 of the flat-jet nozzles 10.
  • the flat jet nozzles 10 perform a second rotational movement, wherein the second axis of rotation coincides with the central longitudinal axis 18.
  • Both axes of rotation 70, 18 are arranged perpendicular to the surface 66 to be descaled.
  • the flat jet nozzles 10 are arranged in this case and the diameter of the rotational movement about the axis of rotation 70 is dimensioned so that the flat jets 22 completely desaturate the surface 66.
  • the amount of the feed 68 is tuned accordingly.
  • the flat jets 22 thus always hit slightly obliquely and at the predefined angle on the surface 66. Regardless of the rotational position of the flat jet nozzles 10 so optimal conditions for the descaling of the surface 66 are always created.
  • the arrangement shown can be used not only for descaling surfaces, but also generally for removing material or dirt from the surface 66.
  • the inside of pipes or holes can be cleaned or roughened by material removal.
  • the use in tubular openings or generally cavities is possible.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

Die Erfindung betrifft eine Flachstrahldüse zum Abtragen von Material oder Schmutz mittels eines Hochdruckflüssigkeitsstrahls in einem Druckbereich ab 100 bar, mit einem Düsengehäuse, wobei in dem Düsengehäuse ein Strahlrichter angeordnet ist, wobei das Düsengehäuse einen Fluidkanal mit einer Austrittsöffnung bildet, wobei der Fluidkanal bis zur Austrittsöffnung konzentrisch zu einer Mittellängsachse des Düsengehäuses ausgebildet ist und wobei die Austrittsöffnung eine längliche Form mit einer längeren Hauptachse und einer kürzeren Nebenachse aufweist, bei der eine Ebene, in der die längere Hauptachse liegt und die senkrecht zur kürzeren Nebenachse angeordnet ist, die Mittellängsachse schneidet und mit der Mittellängsachse einen Winkel zwischen 5° und 75°, insbesondere 10° bis 45°, einschließt.The invention relates to a flat jet nozzle for removing material or dirt by means of a high-pressure liquid jet in a pressure range from 100 bar, with a nozzle housing, wherein in the nozzle housing, a jet straightener is arranged, wherein the nozzle housing forms a fluid channel with an outlet opening, wherein the fluid channel to the outlet opening is formed concentrically to a central longitudinal axis of the nozzle housing and wherein the outlet opening has an elongated shape with a longer major axis and a shorter minor axis, wherein a plane in which the longer major axis and which is arranged perpendicular to the shorter minor axis intersects the central longitudinal axis and with the central longitudinal axis forms an angle between 5 ° and 75 °, in particular 10 ° to 45 °.

Description

Die Erfindung betrifft eine Flachstrahldüse zum Abtragen von Material oder Schmutz mittels eines Hochdruckflüssigkeitsstrahls in einem Druckbereich ab 100 bar, mit einem Düsengehäuse, wobei das Düsengehäuse einen Fluidkanal mit einer Austrittsöffnung bildet, wobei der Fluidkanal bis zur Austrittsöffnung konzentrisch zu einer Mittellängsachse des Düsengehäuses ausgebildet ist und wobei die Austrittsöffnung eine längliche Form mit einer längeren Hauptachse und einer kürzeren Nebenachse aufweist.The invention relates to a flat jet nozzle for removing material or dirt by means of a high-pressure liquid jet in a pressure range from 100 bar, with a nozzle housing, wherein the nozzle housing forms a fluid channel with an outlet opening, wherein the fluid channel is formed to the outlet opening concentric to a central longitudinal axis of the nozzle housing and wherein the outlet opening has an elongate shape with a longer major axis and a shorter minor axis.

Mit der Erfindung soll eine bezüglich ihres Raumbedarfs und ihres Einsatzzweckes flexiblere Flachstrahldüse bereitgestellt werden.With the invention, a more flexible flat jet nozzle is to be provided with regard to its space requirement and its intended use.

Erfindungsgemäß ist hierzu eine Flachstrahldüse mit den Merkmalen von Anspruch 1 und eine Verwendung einer Flachstrahldüse mit den Merkmalen von Anspruch 6 vorgesehen.According to the invention, a flat jet nozzle with the features of claim 1 and a use of a flat jet nozzle with the features of claim 6 are provided for this purpose.

Bei einer erfindungsgemäßen Flachstrahldüse zum Abtragen von Material oder Schmutz mittels eines Hochdruckflüssigkeitsstrahls in einem Druckbereich ab 100 bar mit einem Düsengehäuse, wobei das Düsengehäuse einen Fluidkanal mit einer Austrittsöffnung bildet, wobei der Fluidkanal bis zur Austrittsöffnung konzentrisch zu einer Mittellängsachse des Düsengehäuses ausgebildet ist und wobei die Austrittsöffnung eine längliche Form mit einer längeren Hauptachse und einer kürzeren Nebenachse aufweist, ist somit erfindungsgemäß vorgesehen, dass eine Ebene, in der die längere Hauptachse liegt und die senkrecht zur kürzeren Nebenachse angeordnet ist, die Mittellängsachse schneidet und mit der Mittellängsachse einen Winkel zwischen 5° und 175°, insbesondere 5° bis 75°, insbesondere 10° bis 45°, einschließt. Die längliche Austrittsöffnung ist somit schräg nach unten, senkrecht oder schräg nach oben zur Mittellängsachse angeordnet und infolgedessen ist auch eine Ebene des Flachstrahls, die also etwa mittig innerhalb des ausgegebenen Flachstrahls liegt, schräg oder senkrecht zur Mittellängsachse angeordnet und schneidet die Mittellängsachse. Zum Entzundern von Stahlbauteilen in Walzwerken ist eine Anordnung schräg nach unten mit einem Winkel zwischen 5° und 75° bevorzugt. Für Reinigungszwecke oder zum Aufrauhen von Oberflächen kann ein Winkel zwischen 5° und 175° gewählt werden. Die Ebene des ausgegebenen Flachstrahls muss damit nicht unbedingt der Ebene entsprechen, in der die längere Hauptachse liegt und die senkrecht zur kürzeren Nebenachse angeordnet ist. Die tatsächliche Austrittsebene des Flachstrahls ist nicht nur von der Anordnung der Austrittsöffnung, sondern darüber hinaus auch noch durch die Ausbildung und vor allem Anströmung des Fluidkanals bis zur Austrittsöffnung bestimmt. Der wesentliche Vorteil der erfindungsgemäßen Düse ist, dass ein schräg zur Mittellängsachse austretender Flachstrahl bereitgestellt ist und dennoch der Fluidkanal bis zur Austrittsöffnung konzentrisch zur Mittellängsachse ausgebildet ist. Die erfindungsgemäße Flachstrahldüse kann damit äußerst platzsparend auch durch kleine Freiräume, beispielsweise zwischen Transportwellen in Walzwerken, hindurchgeführt werden. Überraschenderweise ergibt sich dabei auch bei der erfindungsgemäßen schrägen Anordnung der Austrittsöffnung zur Mittellängsachse ein sehr gutes Sprühbild des Flachstrahls mit großem Impact oder großem Auftreffimpuls des Flachstrahls auf eine besprühte Oberfläche. Bisher war man davon ausgegangen, dass bei Hochdruckflachstrahldüsen eine möglichst konzentrische Führung der Flüssigkeit durch den Fluidkanal und auch eine konzentrische Anordnung der Austrittsöffnung erforderlich ist, um ein zufriedenstellendes Sprühbild mit ausreichendem Impact zu erzielen. Konventionelle schräg spritzende Flachstrahldüsen wurden daher so ausgebildet, dass der Fluidkanal als abgeknicktes Rohr ausgeführt wurde, so dass also stromaufwärts der Austrittsöffnung noch eine erhebliche Strecke mit konzentrisch zur Mittellängsachse der Austrittsöffnung ausgebildetem Fluidkanal zur Verfügung stand. Überraschenderweise ermöglicht es die erfindungsgemäße Düse bei einem Winkel der Austrittsöffnung mit der Mittellängsachse zwischen 5° und 75°, insbesondere 10° bis 45°, ein sehr gutes Sprühbild mit sehr gutem Impact über die beaufschlagte Fläche zu erzielen. Auch mit einem Winkel zwischen 5° und 175° werden gute Ergebnisse erzielt. Wie ausgeführt wurde, entspricht dabei der Winkel der Ebene des ausgegebenen Flachstrahls nicht unbedingt der Ebene der Austrittsöffnung bzw. der Ebene, in der die längere Hauptachse liegt und die senkrecht zur kürzeren Nebenachse angeordnet ist. Der gewünschte Austrittswinkel des Flachstrahls kann aber problemlos durch Berechnungen oder Versuche ermittelt und eingestellt werden.In a flat fan nozzle according to the invention for removing material or dirt by means of a high-pressure liquid jet in a pressure range from 100 bar with a nozzle housing, wherein the nozzle housing forms a fluid channel with an outlet opening, wherein the fluid channel is formed to the outlet opening concentric to a central longitudinal axis of the nozzle housing and wherein the Outlet opening has an elongated shape with a longer main axis and a shorter minor axis is thus provided according to the invention that a plane in which the longer major axis is located and which is perpendicular to the shorter minor axis intersects the central longitudinal axis and with the central longitudinal axis an angle between 5 ° and 175 °, in particular 5 ° to 75 °, in particular 10 ° to 45 °. The elongated outlet opening is thus arranged obliquely downwards, perpendicularly or obliquely upwards to the central longitudinal axis and consequently a plane of the flat jet, which thus lies approximately centrally within the output flat jet, is arranged obliquely or perpendicular to the central longitudinal axis and intersects the central longitudinal axis. For descaling of steel components in rolling mills, an arrangement obliquely downwards at an angle between 5 ° and 75 ° is preferred. For cleaning purposes or for roughening surfaces, an angle between 5 ° and 175 ° can be selected. The plane of the output flat jet does not necessarily correspond to the plane in which the longer main axis lies and which is arranged perpendicular to the shorter minor axis. The actual exit plane of the flat jet is determined not only by the arrangement of the outlet opening, but also by the formation and especially flow of the fluid channel to the outlet opening. The essential advantage of the nozzle according to the invention is that a flat jet emerging obliquely to the central longitudinal axis is provided and yet the fluid channel is formed to the outlet opening concentric to the central longitudinal axis. The flat fan nozzle according to the invention can thus extremely space-saving also by small clearances, for example between transport shafts in rolling mills, are passed. Surprisingly, this also results in the oblique arrangement of the outlet opening according to the invention to the central longitudinal axis a very good spray pattern of the flat jet with high impact or large impingement of the flat jet on a sprayed surface. So far, it was assumed that with high-pressure flat jet nozzles concentric guidance of the liquid through the fluid channel and also a concentric arrangement of the outlet opening is required in order to achieve a satisfactory spray pattern with sufficient impact. Conventional obliquely spraying flat jet nozzles were therefore designed so that the fluid channel was designed as a kinked tube, so that was thus upstream of the outlet still a considerable distance with concentric to the central longitudinal axis of the outlet opening formed fluid channel was available. Surprisingly, the nozzle according to the invention makes it possible, at an angle of the outlet opening with the central longitudinal axis between 5 ° and 75 °, in particular 10 ° to 45 °, to achieve a very good spray pattern with a very good impact over the applied surface. Even with an angle between 5 ° and 175 ° good results are achieved. As has been stated, the angle of the plane of the output flat jet does not necessarily correspond to the plane of the exit opening or the plane in which the longer main axis lies and which is arranged perpendicular to the shorter minor axis. However, the desired exit angle of the flat jet can easily be determined and adjusted by calculations or tests.

In Weiterbildung der Erfindung ist die Austrittsöffnung in einem Endabschnitt des Fluidkanals mit kugelsegmentartiger Form angeordnet.In a further development of the invention, the outlet opening is arranged in an end portion of the fluid channel with a spherical segment-like shape.

Die Austrittsöffnung entsteht beispielsweise durch Anschneiden eines kugelsegmentartigen Endabschnitts des Fluidkanals. Unter Anschneiden kann dabei verstanden werden, dass das Düsengehäuse tatsächlich mittels eines Fräsers angeschnitten wird, es ist darunter aber auch zu verstehen, dass von einem Anschneiden in geometrischer Hinsicht gesprochen wird, dass also die Düse durch andere Verfahren, beispielsweise Spritzgießen und Sintern oder Gießen, hergestellt wird. Die Anordnung der Austrittsöffnung in einem Endabschnitt des Fluidkanals mit kugelsegmentartiger Form hat den erheblichen Vorteil, dass die Austrittsöffnung in unterschiedlichen Winkeln zur Mittellängsachse angeordnet werden kann, ohne dass der Endabschnitt verändert werden muss.The outlet opening is formed for example by cutting a spherical segment-like end portion of the fluid channel. Under cutting can be understood that the nozzle housing is actually cut by means of a milling cutter, but it is also to be understood that it is spoken of a cutting in geometric terms, ie that the nozzle by other methods, such as injection molding and sintering or casting, will be produced. The arrangement of the outlet opening in an end portion of the fluid channel with spherical segment-like shape has the considerable advantage that the outlet opening can be arranged at different angles to the central longitudinal axis, without the end portion must be changed.

In Weiterbildung der Erfindung weist die Austrittsöffnung eine elliptische oder ellipsenähnliche Form auf.In a further development of the invention, the outlet opening has an elliptical or elliptical-like shape.

Es hat sich herausgestellt, dass mit einer ellipsenförmigen oder ellipsenähnlichen Form bei der erfindungsgemäßen Düse sehr gute Sprühbilder des ausgegebenen Flachstrahls bei großem Impact des Flachstrahls erzielt werden können.It has been found that very good spray patterns of the output flat jet can be achieved with a large impact of the flat jet with an ellipsoidal or elliptical shape in the nozzle according to the invention.

Die erfindungsgemäße Flachstrahldüse wird vorzugsweise zum Entzundern von Metallteilen verwendet.The flat fan nozzle according to the invention is preferably used for descaling metal parts.

Beim Entzundern von Metallteilen mittels Wasserstrahl wird in der Regel gefordert, dass der Flachstrahl leicht schräg auf die zu entzundernde Metalloberfläche auftritt. Mit der erfindungsgemäßen Düse lässt sich dies auch dann erreichen, wenn das Gehäuse der Flachstrahldüse und speziell die Mittellängsachse des Düsengehäuses senkrecht zu der zu entzundernden Oberfläche angeordnet ist. Die erfindungsgemäße Flachstrahldüse kann dadurch in äußerst platzsparender Weise angeordnet werden.When descaling metal parts by means of a water jet is usually required that the flat jet occurs slightly obliquely to be descaled metal surface. With the nozzle according to the invention, this can be achieved even if the housing of the flat jet nozzle and especially the central longitudinal axis of the nozzle housing is arranged perpendicular to the surface to be descaled. The flat fan nozzle according to the invention can thereby be arranged in an extremely space-saving manner.

In Weiterbildung der Erfindung ist bei der erfindungsgemäßen Verwendung eine erste Rotationsbewegung der Flachstrahldüse um eine erste Rotationsachse vorgesehen, die senkrecht zu einer zu entzundernden Oberfläche der Metallteile und in Abstand zur Mittellängsachse des Düsengehäuses angeordnet ist.In a further development of the invention, a first rotational movement of the flat jet nozzle is provided about a first axis of rotation, which is arranged perpendicular to a surface to be descaled of the metal parts and at a distance from the central longitudinal axis of the nozzle housing in the inventive use.

Durch geschickte Auswahl von Rotationsbewegungen der Flachstrahldüse kann eine verbesserte Entzunderung erzielt werden.By skillful selection of rotational movements of the flat jet nozzle, an improved descaling can be achieved.

In Weiterbildung der Erfindung ist eine zweite Rotationsbewegung der Flachstrahldüse um eine zweite Rotationsachse vorgesehen, wobei die zweite Rotationsachse beabstandet von der ersten Rotationsachse und ebenfalls senkrecht zu einer zu entzundernden Oberfläche der Metallteile angeordnet ist.In a further development of the invention, a second rotational movement of the flat jet nozzle is provided about a second axis of rotation, the second axis of rotation being spaced from the first axis of rotation and also perpendicular to a surface of the metal parts to be descaled.

Durch die Überlagerung von zwei Rotationsbewegungen der Flachstrahldüse lässt sich eine weiter verbesserte Entzunderung erzielen.By superimposing two rotational movements of the flat jet nozzle, a further improved descaling can be achieved.

In Weiterbildung der Erfindung fällt die zweite Rotationsachse mit der Mittellängsachse des Düsengehäuses zusammen.In a further development of the invention, the second axis of rotation coincides with the central longitudinal axis of the nozzle housing.

Gemäß der erfindungsgemäßen Verwendung rotiert die Flachstrahldüse also einmal um sich selbst, also um die Mittellängsachse ihres Düsengehäuses, und darüber hinaus wird das Düsengehäuse noch um eine Rotationsachse gedreht, die beabstandet von der Mittellängsachse des Düsengehäuses angeordnet ist. Es entsteht also eine überlagerte Rotationsbewegung. Vorteilhafterweise werden mehrere erfindungsgemäße Flachstrahldüsen oberhalb der zu entzundernden Oberfläche angeordnet und in abgestimmter Weise um die ersten bzw. zweiten Rotationsachsen gedreht, so dass die zu entzundernde Oberfläche vollständig durch die erzeugten Flachstrahlen entzundert wird.According to the use according to the invention, the flat jet nozzle thus rotates once around itself, ie about the central longitudinal axis of its nozzle housing, and moreover, the nozzle housing is still rotated about an axis of rotation which is spaced from the central longitudinal axis of the nozzle housing. So it creates a superimposed rotational movement. Advantageously, a plurality of flat jet nozzles according to the invention are arranged above the surface to be descaled and are rotated in a coordinated manner about the first and second axes of rotation, so that the surface to be descaled is completely descaled by the generated flat jets.

In Weiterbildung der Erfindung wird die zu entzundernde Oberfläche in einer Vorschubrichtung parallel zur Oberfläche relativ zu der Flachstrahldüse bewegt, wobei die erste Rotationsbewegung und die zweite Rotationsbewegung so aufeinander abgestimmt sind, dass der von der Flachstrahldüse erzeugte Flachstrahl immer in einem konstanten Winkel von 0° bis ±45°, insbesondere senkrecht, zur Vorschubrichtung angeordnet ist.In a further development of the invention, the surface to be descaled is moved in a feed direction parallel to the surface relative to the flat jet nozzle, wherein the first rotational movement and the second rotational movement are coordinated so that the flat jet generated by the flat jet nozzle always at a constant angle of 0 ° to ± 45 °, in particular perpendicular, is arranged to the feed direction.

Der von der Flachstrahldüse erzeugte Flachstrahl oder die von mehreren Flachstrahldüsen erzeugten Flachstrahlen treffen also immer so auf die zu entzundernde Oberfläche auf, dass eine größere Querabmessung der Flachstrahlen immer in einem konstanten Winkel, insbesondere senkrecht, zur Vorschubrichtung angeordnet ist. Die Auftrefffläche der Flachstrahlen ist länglich und ihre längere Querabmessung ist also beispielsweise senkrecht zur Verschieberichtung angeordnet, wohingegen ihre kürzere Querabmessung dann parallel zur Vorschubrichtung angeordnet ist. Dadurch wird eine maximale Abdeckung der Oberfläche erzielt. Vorteilhafterweise treffen die erzeugten Flachstrahlen darüber hinaus immer in einem vordefinierten konstanten Winkel auf die zu entzundernde Oberfläche auf. Auch während der Drehung der Flachstrahldüse oder der mehreren Flachstrahldüsen herrschen somit immer optimale Bedingungen für die Entzunderung einer Oberfläche.The flat jet generated by the flat jet nozzle or the flat jets generated by a plurality of flat jet nozzles therefore always strike the surface to be descaled so that a larger transverse dimension of the flat jets is always arranged at a constant angle, in particular perpendicular to the feed direction. The incident surface of the flat jets is elongated and their longer transverse dimension is therefore arranged, for example, perpendicular to the displacement direction, whereas their shorter transverse dimension is then arranged parallel to the feed direction. This achieves maximum coverage of the surface. Advantageously, moreover, the generated flat jets always strike the surface to be descaled at a predefined constant angle. Thus, even during the rotation of the flat jet nozzle or of the multiple flat jet nozzles, optimum conditions for the descaling of a surface always prevail.

Die erfindungsgemäße Flachstrahldüse kann neben dem Entzundern von Metallteilen selbstverständlich allgemein zum Abtragen von Material oder Schmutz mittels eines Hochdruckflüssigkeitsstrahls eingesetzt werden.The flat jet nozzle according to the invention can, of course, in addition to the descaling of metal parts, generally be used for removing material or dirt by means of a high-pressure liquid jet.

Weitere Merkmale und Vorteile der Erfindung ergeben sich aus den Ansprüchen und der folgenden Beschreibung bevorzugter Ausführungsformen der Erfindung im Zusammenhang mit den Zeichnungen. In den Zeichnungen zeigen:

Fig. 1
eine Schnittansicht einer erfindungsgemäßen Flachstrahldüse, wobei eine Mittellängsachse des Düsengehäuses in der Schnittebene liegt,
Fig. 2
eine Seitenansicht eines Mundstücks der Flachstrahldüse der Fig. 1,
Fig. 3
eine Draufsicht auf das Mundstück der Fig. 2,
Fig. 4
eine Ansicht auf die Schnittebene B-B in Fig. 2,
Fig. 5
eine Ansicht auf die Schnittebene A-A in Fig. 3,
Fig. 6
eine Draufsicht auf eine Anordnung von mehreren erfindungsgemäßen Flachstrahldüsen oberhalb einer zu entzundernden Oberfläche in schematischer Darstellung und
Fig. 7
eine schematische abschnittsweise Darstellung der erfindungsgemäßen Flachstrahldüse zur Verdeutlichung der geometrischen Verhältnisse.
Further features and advantages of the invention will become apparent from the claims and the following description of preferred embodiments of the invention in conjunction with the drawings. In the drawings show:
Fig. 1
a sectional view of a flat jet nozzle according to the invention, wherein a central longitudinal axis of the nozzle housing is in the sectional plane,
Fig. 2
a side view of a mouthpiece of the fan nozzle of Fig. 1 .
Fig. 3
a plan view of the mouthpiece of Fig. 2 .
Fig. 4
a view on the cutting plane BB in Fig. 2 .
Fig. 5
a view on the cutting plane AA in Fig. 3 .
Fig. 6
a plan view of an arrangement of a plurality of flat jet nozzles according to the invention above a surface to be descaled in a schematic representation and
Fig. 7
a schematic sectional view of the flat jet nozzle according to the invention to illustrate the geometric relationships.

Die Darstellung der Fig. 1 zeigt eine erfindungsgemäße Flachstrahldüse 10, deren Gehäuse in einer Halterung 12 angeordnet ist. Durch die Halterung 12 wird eine Hochdruckflüssigkeit, beispielsweise Wasser, zugeführt. Die Hochdruckflüssigkeit wird über einen Zuführkanal 14 zugeführt, der in einen Fluidkanal 16 der Flachstrahldüse 10 mündet. Der Fluidkanal 16 ist konzentrisch zu einer Mittellängsachse 18 der erfindungsgemäßen Flachstrahldüse 10 angeordnet. Wie Fig. 1 zu entnehmen ist, verläuft der Fluidkanal bis zu einer Austrittsöffnung 20 konzentrisch zur Mittellängsachse 18. Lediglich die Austrittsöffnung 20 ist schräg zur Mittellängsachse angeordnet, so dass der von der Flachstrahldüse 10 erzeugte Flachstrahl 22 schräg zur Mittellängsachse 18 austritt. Eine Austrittsebene des Flachstrahls 22 ist in Fig. 1 unter der Bezugsziffer 24 strichpunktiert dargestellt. Die Austrittsebene 24 liegt mittig zum austretenden Flachstrahl und ist ebenfalls schräg zur Mittellängsachse 18 angeordnet. Die Austrittsebene 24 schneidet die Mittellängsachse 18.The presentation of the Fig. 1 shows a flat jet nozzle 10 according to the invention, whose housing is arranged in a holder 12. By the holder 12, a high-pressure liquid, for example water, is supplied. The high-pressure liquid is supplied via a feed channel 14, which opens into a fluid channel 16 of the flat-jet nozzle 10. The fluid channel 16 is arranged concentrically to a central longitudinal axis 18 of the flat jet nozzle 10 according to the invention. As Fig. 1 It can be seen, the fluid channel extends to an outlet opening 20 concentric with the central longitudinal axis 18. Only the outlet opening 20 is arranged obliquely to the central longitudinal axis, so that the flat jet 22 generated by the flat jet nozzle 10 emerges obliquely to the central longitudinal axis 18. An exit plane of the flat jet 22 is in Fig. 1 under the reference numeral 24 shown in phantom. The exit plane 24 is located centrally to the exiting flat jet and is also arranged obliquely to the central longitudinal axis 18. The exit plane 24 intersects the central longitudinal axis 18.

Der Fluidkanal 16 verläuft ausgehend von der Mündung des Zuführkanals 14 zunächst mit konstantem Durchmesser über etwa die Hälfte seiner Gesamtlänge. Nach etwa der Hälfte seiner Gesamtlänge ist im Fluidkanal 16 ein Strahlrichter 26 angeordnet. Der Strahlrichter 26 weist mehrere, sich radial zur Mittellängsachse 18 erstreckende Strömungsleitflächen auf, die parallel zur Mittellängsachse verlaufen. Der Strahlrichter 26 ist als sogenannter seelenloser Strahlrichter ausgeführt, so dass also ein Bereich um die Mittellängsachse 18 frei von Einbauten bleibt. Der Strahlrichter 26 ist in eine Hülse 40 eingepresst.The fluid channel 16 extends from the mouth of the feed channel 14 initially with a constant diameter over about half its total length. After about half of its total length, a jet funnel 26 is arranged in the fluid channel 16. The jet straightener 26 has a plurality of flow guide surfaces which extend radially to the central longitudinal axis 18 and extend parallel to the central longitudinal axis. The beam director 26 is designed as a so-called soulless beam judge, so that therefore an area around the central longitudinal axis 18 remains free of internals. The jet funnel 26 is pressed into a sleeve 40.

Unmittelbar stromabwärts des Strahlrichters 26 schließt sich ein durch die Hülse 40 gebildeter zylindrischer Abschnitt 28 an, der etwa die Länge des Strahlrichters 26 und den gleichen Durchmesser wie der Strahlrichter 26 hat. Auf den zylindrischen Abschnitt 28 folgt eine erste kegelstumpfförmige Verjüngung 30 des Fluidkanals 16. Diese Verjüngung 30 des Fluidkanals wird von einem zylindrischen Abschnitt 32 gefolgt, der den am Ende der Verjüngung 28 vorhandenen Durchmesser des Fluidkanals bis zu einem Endabschnitt des Fluidkanals 16 fortsetzt, wobei in dem Endabschnitt dann die Austrittsöffnung 20 angeordnet ist. Vor der Austrittsöffnung 20 ist noch eine weitere kegelstumpfförmige Verjüngung 33 vorgesehen. Der Endabschnitt ist abschnittsweise durch die zweite Verjüngung 33 gebildet. Die Austrittsöffnung 20 kann in einem kugelabschnittsförmigen Bereich platziert sein, der sich an die Verjüngung 33 anschließt.Immediately downstream of the jet director 26 is followed by a formed by the sleeve 40 cylindrical portion 28, which has approximately the length of the Strahlrichters 26 and the same diameter as the Strahlrichter 26. The cylindrical portion 28 is followed by a first frusto-conical taper 30 of the fluid channel 16. This taper 30 of the fluid channel is followed by a cylindrical portion 32 which continues the diameter of the fluid channel at the end of the taper 28 to an end portion of the fluid channel 16 the end portion then the outlet opening 20 is arranged. Before the outlet opening 20, a further frusto-conical taper 33 is provided. The end portion is formed in sections by the second taper 33. The outlet opening 20 may be placed in a spherical portion which adjoins the taper 33.

Der Fluidkanal 16 ist innerhalb eines Düsengehäuses 34 ausgebildet, das, wie ausgeführt wurde, in der Halterung 12 befestigt ist und das einen in der Halterung 12 angeordneten Grundabschnitt 36, eine am Grundabschnitt 36 angeordnete Überwurfhaube 38, eine in die Überwurfhaube 38 eingeschraubte Hülse 40 und ein in die Überwurfhaube 38 eingesetztes Düsenmundstück 42 aufweist. Die Hülse 40 definiert den Fluidkanal 16 im Bereich des Strahlrichters 26, des zylindrischen Abschnitts 28, der Verjüngung 30 und eines Teils des zylindrischen Abschnitts 32 des Fluidkanals. Das Düsenmundstück 42 setzt den zylindrischen Abschnitt 32 des Fluidkanals fort und definiert einen Endabschnitt des Fluidkanals 16 mit der Austrittsöffnung 20. Die Überwurfhaube 38 ist wiederum mittels einer Überwurfmutter 41 am Grundabschnitt 36 befestigt. Zwischen der Hülse 40 und dem Düsenmundstück 42 ist eine Dichtung vorgesehen.The fluid channel 16 is formed within a nozzle housing 34, which, as has been stated, is fixed in the holder 12 and the one arranged in the holder 12 base portion 36, a arranged on the base portion 36 cap 38, a screwed into the cap 38 sleeve sleeve 40 and a nozzle mouthpiece 42 inserted into the cap 38. The sleeve 40 defines the fluid channel 16 in the region of the jet director 26, the cylindrical portion 28, the taper 30 and a portion of the cylindrical portion 32 of the fluid channel. The nozzle mouthpiece 42 continues the cylindrical portion 32 of the fluid channel and defines an end portion of the fluid channel 16 with the outlet opening 20. The cap 38 is in turn secured by means of a union nut 41 at the base portion 36. Between the sleeve 40 and the nozzle mouthpiece 42, a seal is provided.

Anhand der Fig. 1 ist gut zu erkennen, dass der Fluidkanal 16 vollständig konzentrisch zur Mittellängsachse 18 des Düsengehäuses 34 der Flachstrahldüse 10 verläuft. Lediglich die Austrittsöffnung 20 ist schräg zur Mittellängsachse 18 angeordnet, so dass auch der Flachstrahl 22 schräg zur Mittellängsachse 18 austritt.Based on Fig. 1 is clearly visible that the fluid channel 16 is completely concentric with the central longitudinal axis 18 of the nozzle housing 34 of the fan jet nozzle 10. Only the outlet opening 20 is arranged obliquely to the central longitudinal axis 18, so that the flat jet 22 emerges obliquely to the central longitudinal axis 18.

Fig. 7 zeigt schematisch die geometrischen Verhältnisse im Bereich der Austrittsöffnung 20, die in dem Endabschnitt 35 des Fluidkanals angeordnet ist. Die Austrittsöffnung 20 weist in der schematischen Darstellung der Fig. 7 eine elliptische Form auf. Im Rahmen der Erfindung kann die Austrittsöffnung 20 eine beliebige, längliche Form haben, also beispielsweise elliptisch, ellipsenähnlich oder oval. Darüber hinaus kann die Austrittsöffnung 20 eine unregelmäßige längliche Form aufweisen, beispielsweise eine berechnete Freiform. Fig. 7 schematically shows the geometric relationships in the region of the outlet opening 20, which is arranged in the end portion 35 of the fluid channel. The outlet opening 20 has in the schematic representation of Fig. 7 an elliptical shape. In the context of the invention, the outlet opening 20 may have any, elongated shape, that is, for example, elliptical, elliptical or oval. In addition, the outlet opening 20 may have an irregular elongated shape, such as a calculated free-form.

Die Austrittsöffnung 20 weist aber immer eine längere Hauptachse 44 und eine kürzere Nebenachse 46 auf. Wenn die Austrittsöffnung 20 eine unregelmäßige Form hat, so entspricht die Hauptachse 44 einer längeren Querabmessung der Austrittsöffnung und die Nebenachse 46 einer kürzeren Querabmessung der Austrittsöffnung 20.However, the outlet opening 20 always has a longer main axis 44 and a shorter minor axis 46. If the outlet opening 20 has an irregular shape, so corresponds to Main axis 44 of a longer transverse dimension of the outlet opening and the minor axis 46 of a shorter transverse dimension of the outlet opening 20th

Die Austrittsöffnung 20 ist nun so zur Mittellängsachse 18 angeordnet, dass eine Ebene 48, in der die längere Hauptachse 44 liegt und die senkrecht zur kürzeren Nebenachse 46 angeordnet ist, die Mittellängsachse schneidet. Die Ebene 48 schneidet sich in der Darstellung der Fig. 7 in einem Punkt 50 mit der Mittellängsachse 18. In der Ebene 48 liegt eine in Fig. 7 gestrichelt dargestellte Mittellinie 52. Die Mittellinie 52 läuft durch den Schnittpunkt der Hauptachse 44 und der Nebenachse 46 und schneidet dann auch die Mittellängsachse 18 in dem Punkt 50. In der Darstellung der Fig. 7 ist eine gedachte Auftrefffläche 54 des Flachstrahls eingezeichnet. Diese Auftrefffläche 54 wird von der Ebene 48 in zwei Hälften geteilt. Es sei dabei daran erinnert, dass die Darstellung der Fig. 7 lediglich schematisch ist und dass unter realen Verhältnissen die Auftrefffläche 54 nicht exakt von der Ebene 48 in zwei Hälften geteilt wird. Hier spielen die realen Strömungsverhältnisse im Fluidkanal eine Rolle. Die Ebene 48 wird jedoch durch die Hauptachse 44, die innerhalb der Ebene 48 liegt, und die Nebenachse 46, die senkrecht auf der Ebene steht, definiert. Die Ebene 48 ist somit durch die Anordnung der Austrittsöffnung 20 definiert. Wie ausgeführt wurde, ist die Austrittsöffnung 20 so angeordnet, dass die Ebene 48 die Mittellängsachse 18 schneidet, in der Darstellung der Fig. 7 im Punkt 50.The outlet opening 20 is now arranged to the central longitudinal axis 18, that a plane 48, in which the longer main axis 44 is located and which is arranged perpendicular to the shorter minor axis 46, the central longitudinal axis intersects. The level 48 intersects in the representation of Fig. 7 at a point 50 with the central longitudinal axis 18. In the plane 48 is an in Fig. 7 The center line 52 passes through the intersection of the main axis 44 and the minor axis 46 and then also intersects the central longitudinal axis 18 in the point 50. In the illustration of the Fig. 7 an imaginary incident surface 54 of the flat jet is drawn. This incident surface 54 is divided by the plane 48 in half. It should be remembered that the presentation of the Fig. 7 is purely schematic and that under real conditions, the incident surface 54 is not exactly divided by the plane 48 in half. Here, the real flow conditions in the fluid channel play a role. However, the plane 48 is defined by the major axis 44 which lies within the plane 48 and the minor axis 46 which is perpendicular to the plane. The plane 48 is thus defined by the arrangement of the outlet opening 20. As has been stated, the exit opening 20 is arranged so that the plane 48 intersects the central longitudinal axis 18, in the illustration of Fig. 7 at the point 50.

Die Darstellung der Fig. 2 zeigt das Düsenmundstück 42 gegenüber der Fig. 1 vergrößert. Gut zu erkennen ist die in Fig. 2 oben liegende Austrittsöffnung 20. Die Mittellängsachse 18 des Düsengehäuses ist gestrichelt eingezeichnet. Wie Fig. 1 zu entnehmen ist, wird das Düsenmundstück in die Überwurfhaube 38 eingeschoben. Das Düsenmundstück 42 kann beispielsweise aus Hartmetall bestehen, beispielsweise gesintertem Hartmetall, um bei den hohen Fluiddrücken ab 100 bar, bei denen die erfindungsgemäße Flachstrahldüse eingesetzt wird, eine gute Standzeit zu erreichen.The presentation of the Fig. 2 shows the nozzle mouth 42 against the Fig. 1 increased. Good to see is the in Fig. 2 overhead outlet opening 20. The central longitudinal axis 18 of the nozzle housing is shown in dashed lines. As Fig. 1 can be seen, the nozzle mouthpiece is inserted into the cap 38. The nozzle mouthpiece 42 may for example consist of hard metal, for example sintered hard metal, in order to achieve a good service life at the high fluid pressures from 100 bar, in which the flat fan nozzle according to the invention is used.

Die Überwurfhaube 38 liegt dabei an Anlageflächen 60 des Düsenmundstücks 42 an. Die austretende Flüssigkeit kommt aber mit der Überwurfhaube 38 nicht in Berührung.The cap 38 is applied to contact surfaces 60 of the nozzle mouthpiece 42. The exiting liquid but does not come into contact with the cap 38.

In Fig. 3 ist das Düsenmundstück 42 in einer Ansicht von oben dargestellt. Zu erkennen ist wieder die Austrittsöffnung 20, die in der Ansicht der Fig. 3 die Form einer einseitig flachgedrückten Ellipse aufweist. Dies ist durch den Blickwinkel der Fig. 3 verursacht, tatsächlich ist die Austrittsöffnung 20 ellipsenförmig. Die Austrittsöffnung 20 ist innerhalb eines Anschnittkanals 62 angeordnet, der in Fig. 2 und Fig. 3 zu erkennen ist. Die Austrittsöffnung 20 entsteht dadurch, dass ein Fräser oder eine Schleifscheibe quer über das Mundstück 42 gezogen wird und dabei dieses anschneidet.In Fig. 3 the nozzle mouthpiece 42 is shown in a view from above. To recognize is again the outlet opening 20, which in the view of Fig. 3 has the shape of a one-sided flattened ellipse. This is by the angle of view Fig. 3 causes, in fact, the outlet opening 20 is elliptical. The outlet opening 20 is disposed within a gate channel 62, which in Fig. 2 and Fig. 3 can be seen. The outlet opening 20 is formed by pulling a milling cutter or a grinding wheel across the mouthpiece 42 and thereby cutting it.

Fig. 4 zeigt eine Ansicht auf die Schnittebene B-B in Fig. 2. Zu erkennen ist der Anschnittkanal 62 sowie ein Abschnitt der Berandung der Austrittsöffnung 20. Weiter ist die Form des Endabschnitts 35 des Fluidkanals zu erkennen. Fig. 4 shows a view on the cutting plane BB in Fig. 2 , Evident is the gate 62 and a portion of the boundary of the outlet opening 20. Furthermore, the shape of the end portion 35 of the fluid channel can be seen.

Fig. 5 zeigt eine Ansicht auf die Schnittebene A-A in Fig. 3. Die Mittellängsachse 18 liegt somit innerhalb der Schnittebene der Fig. 5. In der Darstellung der Fig. 5 ist zu erkennen, dass der Endabschnitt 35 des Fluidkanals, in dem die Austrittsöffnung 20 liegt, eine kugelsegmentartige Form aufweist. Die Austrittsöffnung 20 ist wiederum, wie anhand der Fig. 7 erläutert wurde, schräg zur Mittellängsachse 18 angeordnet, so dass die Ebene 48 mit der Mittellängsachse einen Winkel α einschließt. Dieser Winkel α kann zwischen 5° und 75° liegen. Besonders vorteilhafte Ergebnisse wurden mit einem Winkel α zwischen 10° und 45° erzielt. Fig. 5 shows a view on the cutting plane AA in Fig. 3 , The central longitudinal axis 18 is thus within the cutting plane of the Fig. 5 , In the presentation of the Fig. 5 It can be seen that the end portion 35 of the fluid channel, in which the outlet opening 20 is located, has a spherical segment-like shape. The outlet opening 20 is in turn, as shown by the Fig. 7 has been explained, arranged obliquely to the central longitudinal axis 18, so that the plane 48 encloses an angle α with the central longitudinal axis. This angle α can be between 5 ° and 75 °. Particularly advantageous results were achieved with an angle α between 10 ° and 45 °.

Bei der erfindungsgemäßen Flachstrahldüse wird die zu versprühende Hochdruckflüssigkeit, die einen Druck ab 100 bar aufweist, somit über die gesamte Länge des Fluidkanals 16, siehe Fig. 1, konzentrisch zur Mittellängsachse 18 geführt. Erst im Endabschnitt 35 des Düsenmundstücks 42, siehe Fig. 5, wird die Flüssigkeit dann aus der Richtung der Mittellängsachse 18 heraus abgelenkt. Dies geschieht lediglich durch die zur Mittellängsachse 18 schräge Anordnung der Austrittsöffnung 20. Überraschenderweise ergibt sich trotz der zur Mittellängsachse 18 konzentrischen Führung der Hochdruckflüssigkeit bis unmittelbar vor die Austrittsöffnung 20 auch bei schräger Anordnung der Austrittsöffnung 20 zur Mittellängsachse 18 ein sehr gutes Sprühbild des ausgegebenen Flachstrahls 22 mit über die Auftrefffläche gleichmäßig verteiltem und hohem Auftreffimpuls.In the flat jet nozzle according to the invention, the high-pressure liquid to be sprayed, which has a pressure from 100 bar, thus over the entire length of the fluid channel 16, see Fig. 1 , guided concentrically to the central longitudinal axis 18. Only in the end portion 35 of the nozzle mouthpiece 42, see Fig. 5 , the liquid is then deflected out of the direction of the central longitudinal axis 18 out. Surprisingly, despite the concentric to the central axis 18 concentric guidance of the high pressure fluid until immediately before the outlet opening 20, even with an oblique arrangement of the outlet opening 20 to the central longitudinal axis 18, a very good spray pattern of the output flat jet 22nd with uniformly distributed and high impact impulse over the incident surface.

Die Darstellung der Fig. 6 zeigt schematisch mehrere erfindungsgemäße Flachstrahldüsen 10, wobei lediglich die jeweiligen Mittellängsachsen 18, die Austrittsöffnungen 20 und der jeweils ausgegebene Flachstrahl 22 schematisch angedeutet sind. Die Flachstrahldüsen 10 sind oberhalb einer zu entzundernden Oberfläche 66 angeordnet, die in Richtung eines Pfeils 68 relativ zu den Flachstrahldüsen 10 bewegt wird. Bei Einsatz in einem Walzwerk werden die Flachstrahldüsen 10 oberhalb und unterhalb eines zu entzundernden Metallstücks angeordnet. Die Blickrichtung in Fig. 6 ist von oben auf die Oberfläche 66 herab. Die Mittellängsachsen 18 der Flachstrahldüsen 10 stehen jeweils senkrecht auf der Oberfläche 66, so dass die Vorschubbewegung 68 der Oberfläche 66 senkrecht zu den Mittellängsachsen 18 der Flachstrahldüsen 10 liegt. Die jeweils ausgegebenen Flachstrahlen 22 treffen somit leicht schräg auf die Oberfläche 66 auf, in der Darstellung der Fig. 6 sind daher die Flachstrahlen 22 als schräg nach unten und gegen die Vorschubrichtung 68 gerichtet dargestellt. Jede der Flachstrahldüsen 10 wird um die Mittellängsachse 18 gedreht, was mittels eines jeweiligen Kreispfeils angedeutet ist. Darüber hinaus wird jede der Flachstrahldüsen 10 um eine Rotationsachse 70 gedreht, die beabstandet zur Mittellängsachse 18 der Flachstrahldüsen 10 angeordnet ist. Jede der Flachstrahldüsen 10 führt somit zwei Rotationsbewegungen aus. Eine erste Rotationsbewegung geht um die erste Rotationsachse 70, die beabstandet zur Mittellängsachse 18 der Flachstrahldüsen 10 angeordnet ist. Darüber hinaus führen die Flachstrahldüsen 10 eine zweite Rotationsbewegung aus, wobei die zweite Rotationsachse mit der Mittellängsachse 18 zusammenfällt. Beide Rotationsachsen 70, 18 sind senkrecht zu der zu entzundernden Oberfläche 66 angeordnet.The presentation of the Fig. 6 schematically shows a plurality of flat-jet nozzles 10 according to the invention, wherein only the respective central longitudinal axes 18, the outlet openings 20 and the respectively output flat jet 22 are schematically indicated. The flat-jet nozzles 10 are arranged above a surface 66 to be descaled, which is moved in the direction of an arrow 68 relative to the flat-jet nozzles 10. When used in a rolling mill, the flat jet nozzles 10 are arranged above and below a piece of metal to be descaled. The line of sight in Fig. 6 is down from above on the surface 66. The central longitudinal axes 18 of the flat-jet nozzles 10 are each perpendicular to the surface 66, so that the advancing movement 68 of the surface 66 is perpendicular to the central longitudinal axes 18 of the flat-jet nozzles 10. The issued each flat rays 22 thus slightly obliquely on the surface 66, in the representation of Fig. 6 Therefore, the flat jets 22 are shown as directed obliquely downwards and against the feed direction 68. Each of the flat jet nozzles 10 is rotated about the central longitudinal axis 18, which is indicated by means of a respective circular arrow. In addition, each of the flat jet nozzles 10 is rotated about a rotation axis 70 which is spaced apart to the central longitudinal axis 18 of the flat jet nozzles 10 is arranged. Each of the flat jet nozzles 10 thus performs two rotational movements. A first rotational movement passes around the first rotational axis 70, which is arranged at a distance from the central longitudinal axis 18 of the flat-jet nozzles 10. In addition, the flat jet nozzles 10 perform a second rotational movement, wherein the second axis of rotation coincides with the central longitudinal axis 18. Both axes of rotation 70, 18 are arranged perpendicular to the surface 66 to be descaled.

Die beiden Rotationsbewegungen um die Rotationsachse 70 und die Mittellängsachse 18 sind bezüglich ihrer Winkelgeschwindigkeit so aufeinander abgestimmt, dass die Flachstrahlen 22 unabhängig von der Stellung der Flachstrahldüsen 10 immer im konstanten Winkel, insbesondere senkrecht, zur Vorschubrichtung 68 angeordnet sind. Dies ist in Fig. 6 dargestellt. Eine jeweilige Auftrefffläche 54 der Flachstrahlen 22 ist, unabhängig von der Drehstellung der jeweiligen Flachstrahldüse 10, immer in einem konstanten Winkel, insbesondere senkrecht, zur Vorschubrichtung 68 der zu entzundernden Oberfläche 66 angeordnet.The two rotational movements about the axis of rotation 70 and the central longitudinal axis 18 are matched with respect to their angular velocity so that the flat jets 22 are always arranged at a constant angle, in particular perpendicular to the feed direction 68, regardless of the position of the flat jet nozzles 10. This is in Fig. 6 shown. A respective incident surface 54 of the flat jets 22, regardless of the rotational position of the respective flat jet nozzle 10, always arranged at a constant angle, in particular perpendicular to the feed direction 68 of the surface 66 to be descaled.

Die Flachstrahldüsen 10 sind dabei so angeordnet und der Durchmesser der Rotationsbewegung um die Rotationsachse 70 ist so bemessen, dass die Flachstrahlen 22 die Oberfläche 66 vollständig entzundern. Selbstverständlich ist hierzu auch der Betrag des Vorschubs 68 entsprechend abgestimmt. Die Flachstrahlen 22 treffen somit immer leicht schräg und in dem vordefinierten Winkel auf die Oberfläche 66. Unabhängig von der Drehstellung der Flachstrahldüsen 10 sind damit immer optimale Verhältnisse für die Entzunderung der Oberfläche 66 geschaffen.The flat jet nozzles 10 are arranged in this case and the diameter of the rotational movement about the axis of rotation 70 is dimensioned so that the flat jets 22 completely desaturate the surface 66. Of course, for this purpose, the amount of the feed 68 is tuned accordingly. The flat jets 22 thus always hit slightly obliquely and at the predefined angle on the surface 66. Regardless of the rotational position of the flat jet nozzles 10 so optimal conditions for the descaling of the surface 66 are always created.

Die in Fig. 6 dargestellte Anordnung kann nicht nur zum Entzundern von Oberflächen, sondern auch allgemein zum Abtragen von Material oder Schmutz von der Oberfläche 66 eingesetzt werden. Beispielsweise kann die Innenseite von Rohren oder Bohrungen gereinigt oder durch Materialabtrag aufgeraut werden. Auch der Einsatz in rohrförmige Öffnungen oder allgemein Hohlräumen ist möglich. Selbstverständlich können auch Außenflächen, beispielsweise von Kolben, gereinigt und aufgeraut werden.In the Fig. 6 The arrangement shown can be used not only for descaling surfaces, but also generally for removing material or dirt from the surface 66. For example, the inside of pipes or holes can be cleaned or roughened by material removal. The use in tubular openings or generally cavities is possible. Of course, outer surfaces, for example, of pistons, cleaned and roughened.

Außer der in Fig. 6 gezeigten Anordnung sind auch andere Anordnungen mehrerer erfindungsgemäßer Düsen möglich, beispielsweise die Anordnung mehrerer rotierender Düsen auf einem gemeinsamen und ebenfalls rotierenden Rotor in unterschiedlichen Abständen von der Drehachse des gemeinsamen Rotors.

--------------- Except the in Fig. 6 Arrangement shown, other arrangements of several inventive nozzles are possible, for example, the arrangement of a plurality of rotating nozzles on a common and also rotating rotor at different distances from the axis of rotation of the common rotor.

---------------

Claims (10)

Flachstrahldüse zum Abtragen von Material oder Schmutz mittels eines Hochdruckflüssigkeitsstrahls in einem Druckbereich ab 100 bar, mit einem Düsengehäuse (34), wobei das Düsengehäuse (34) einen Fluidkanal (16) mit einer Austrittsöffnung (20) bildet, wobei der Fluidkanal (16) bis zur Austrittsöffnung (20) konzentrisch zu einer Mittellängsachse (18) des Fluidkanals (16) ausgebildet ist und wobei die Austrittsöffnung (20) eine längliche Form mit einer längeren Hauptachse (44) und einer kürzeren Nebenachse (46) aufweist, dadurch gekennzeichnet, dass eine Ebene, in der die längere Hauptachse (44) liegt und die senkrecht zur kürzeren Nebenachse (46) angeordnet ist, die Mittellängsachse (18) schneidet und mit der Mittellängsachse (18) einen Winkel (α) zwischen 5° und 175 °einschließt, wobei die Austrittsöffnung (20) so ausgebildet und angeordnet ist, dass eine Ebene (24) des ausgegebenen Flachstrahls (22), die also etwa mittig innerhalb des ausgegebenen Flachstrahls (22) liegt, schräg oder senkrecht zur Mittellängsachse (18) angeordnet ist und die Mittellängsachse (18) schneidet.Flat jet nozzle for removing material or dirt by means of a high pressure liquid jet in a pressure range from 100 bar, with a nozzle housing (34), wherein the nozzle housing (34) forms a fluid channel (16) with an outlet opening (20), wherein the fluid channel (16) to is formed to the outlet opening (20) concentric with a central longitudinal axis (18) of the fluid channel (16) and wherein the outlet opening (20) has an elongated shape with a longer major axis (44) and a shorter minor axis (46), characterized in that a Plane in which the longer major axis (44) lies and which is arranged perpendicular to the shorter minor axis (46), the central longitudinal axis (18) intersects and with the central longitudinal axis (18) forms an angle (α) between 5 ° and 175 °, wherein the outlet opening (20) is designed and arranged such that a plane (24) of the output flat jet (22), that is, approximately centered within the output flat jet (22 ), obliquely or perpendicular to the central longitudinal axis (18) is arranged and the central longitudinal axis (18) intersects. Flachstrahldüse nach Anspruch 1, dadurch gekennzeichnet, dass die Ebene mit der Mittellängsachse (18) einen Winkel (α) zwischen 5° und 75° einschließt.Flat-jet nozzle according to claim 1, characterized in that the plane with the central longitudinal axis (18) an angle (α) of between 5 ° and 75 °. Flachstrahldüse nach Anspruch 2, dadurch gekennzeichnet, dass die Eben mit der Mittellängsachse einen Winkel (α) zwischen 10° und 45° einschließt.Flat jet nozzle according to claim 2, characterized in that the plane with the central longitudinal axis forms an angle (α) between 10 ° and 45 °. Flachstrahldüse nach Anspruch 1, dadurch gekennzeichnet, dass die Austrittsöffnung (20) in einem Endabschnitt (35) des Fluidkanals (16) mit kugelsegmentartiger Form angeordnet ist.Flat jet nozzle according to claim 1, characterized in that the outlet opening (20) in an end portion (35) of the fluid channel (16) is arranged with a spherical segment-like shape. Flachstrahldüse nachnach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Austrittsöffnung (20) eine elliptische oder ellipsenähnliche Form aufweist.Flat jet nozzle according to one of the preceding claims, characterized in that the outlet opening (20) has an elliptical or ellipse-like shape. Verwendung einer Flachstrahldüse nach wenigstens einem der vorstehenden Ansprüche zum Entzundern von Metallteilen.Use of a flat jet nozzle according to at least one of the preceding claims for descaling metal parts. Verwendung nach Anspruch 6, gekennzeichnet durch eine erste Rotationsbewegung der Flachstrahldüse um eine erste Rotationsachse (70), die senkrecht zu einer zu entzundernden Oberfläche (66) der Metallteile und im Abstand zur Mittellängsachse (18) des Fluidkanals angeordnet ist.Use according to claim 6, characterized by a first rotational movement of the flat jet nozzle about a first axis of rotation (70) which is arranged perpendicular to a surface descaling (66) of the metal parts and at a distance from the central longitudinal axis (18) of the fluid channel. Verwendung nach Anspruch 7, gekennzeichnet durch eine zweite Rotationsbewegung der Flachstrahldüse um eine zweite Rotationsachse, wobei die zweite Rotationsachse beabstandet von der ersten Rotationsachse (70) und ebenfalls senkrecht zu einer zu entzundernden Oberfläche (66) der Metallteile angeordnet ist.Use according to claim 7, characterized by a second rotational movement of the flat jet nozzle about a second axis of rotation, the second axis of rotation being spaced from the first axis of rotation (70) and also perpendicular to a surface (66) of the metal parts to be descaled. Verwendung nach Anspruch 8, dadurch gekennzeichnet, dass die zweite Rotationsachse mit der Mittellängsachse (18) des Fluidkanals zusammenfällt.Use according to claim 8, characterized in that the second axis of rotation coincides with the central longitudinal axis (18) of the fluid channel. Verwendung nach Anspruch 7 und 8, insbesondere nach Anspruch 9, dadurch gekennzeichnet, dass die zu entzundernde Oberfläche (66) in einer Vorschubrichtung (68) parallel zur Oberfläche (66) relativ zu der Flachstrahldüse (10) bewegt wird, wobei die erste Rotationsbewegung und die zweite Rotationsbewegung so aufeinander abgestimmt sind, dass der von der Flachstrahldüse (10) erzeugte Flachstrahl (22) immer in einem Winkel von 0° bis ±45°, insbesondere senkrecht, zur Vorschubrichtung (86) angeordnet ist.Use according to claim 7 and 8, in particular according to claim 9, characterized in that the surface to be descaled (66) in a feed direction (68) parallel to the surface (66) relative to the flat jet nozzle (10) is moved, wherein the first rotational movement and the second rotational movement are coordinated so that the flat jet (22) generated by the flat jet nozzle (10) is always arranged at an angle of 0 ° to ± 45 °, in particular perpendicular to the feed direction (86).
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US20160271666A1 (en) 2016-09-22
EP3069794B1 (en) 2020-05-27
JP6258994B2 (en) 2018-01-10
UA116390C2 (en) 2018-03-12
CA2922030A1 (en) 2016-09-16
JP2016172251A (en) 2016-09-29
KR101889041B1 (en) 2018-08-20
CN105983489A (en) 2016-10-05
RU2016109242A (en) 2017-09-18
KR20160111344A (en) 2016-09-26
CA2922030C (en) 2019-02-26
RU2651146C2 (en) 2018-04-18
DE102015204664A1 (en) 2016-09-22

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