EP3069794B1 - Flachstrahldüse und verwendung einer flachstrahldüse - Google Patents

Flachstrahldüse und verwendung einer flachstrahldüse Download PDF

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Publication number
EP3069794B1
EP3069794B1 EP16159420.5A EP16159420A EP3069794B1 EP 3069794 B1 EP3069794 B1 EP 3069794B1 EP 16159420 A EP16159420 A EP 16159420A EP 3069794 B1 EP3069794 B1 EP 3069794B1
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EP
European Patent Office
Prior art keywords
flat jet
axis
nozzle
outlet opening
central longitudinal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP16159420.5A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3069794A1 (de
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/de
Application granted granted Critical
Publication of EP3069794B1 publication Critical patent/EP3069794B1/de
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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, the nozzle housing forming a fluid channel with an outlet opening, the fluid channel up to the outlet opening being formed concentrically with 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.
  • the British patent application GB 2 068 779 A relates to a two-component nozzle for cooling steel products.
  • An outlet opening is arranged in a cylindrical section of a fluid channel in front of its end section.
  • the outlet opening is arranged at an angle of approximately 90 ° to the central longitudinal axis of the fluid channel.
  • the German utility model DE 203 16 351 U1 relates to a flat jet nozzle.
  • An outlet opening is arranged in a cylindrical section of a fluid channel of the nozzle housing.
  • a conical end section adjoins the cylindrical section of the fluid channel.
  • the outlet opening is arranged at an angle of approximately 90 ° to the central longitudinal axis of the fluid channel.
  • the European patent application EP 0 119 981 A1 relates to a nozzle for cooling support and guide rollers in continuous casting plants.
  • a cutting edge is provided for sharply delimiting an output fluid jet.
  • the cutting edge can be formed by a boundary surface of a laterally open gap adjoining the outlet openings of the nozzle.
  • the international disclosure WO 2014/023753 A1 relates to a flat jet nozzle for removing material or dirt by means of a high-pressure liquid jet.
  • a fluid channel is arranged obliquely to a surface of a steel product, on which the output liquid jet strikes.
  • An outlet opening is arranged in alignment with the central longitudinal axis of the fluid channel.
  • the international disclosure WO 2005/082555 A1 shows 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, the nozzle housing forming a fluid channel with an outlet opening, the outlet opening being arranged in an end section of the fluid channel and the fluid channel up to the outlet opening concentric to a central longitudinal axis of the fluid channel and the outlet opening has an elongated shape with a longer major axis and a shorter minor axis. It is provided to arrange a plurality of fluid channels, each with an associated outlet opening, in a nozzle housing and then to rotate the nozzle housing about a vertical axis.
  • a flat jet nozzle for removing material or dirt by means of a high-pressure liquid jet with a nozzle housing is known, the nozzle housing forming a fluid channel with an outlet opening, the outlet opening being arranged in an end section of the fluid channel and the fluid channel being concentric with a central longitudinal axis of the outlet opening Fluid channel is formed, 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 lies and which is arranged perpendicular to the shorter minor axis intersects the central longitudinal axis and an angle between 10 and the central longitudinal axis ° and 45 ° and wherein the outlet opening is designed and arranged such that a plane of the flat jet that is output, that is to say approximately centrally within the output flat jet, is arranged obliquely or perpendicular to the central longitudinal longitudinal axis
  • the invention is intended to provide a flat jet nozzle which is more flexible 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 2 are provided.
  • 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, the nozzle housing forming a fluid channel with an outlet opening, the fluid channel up to the outlet opening being concentric with 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, it is therefore provided according to the invention that a plane in which the longer major axis lies and which is arranged perpendicular to the shorter minor axis intersects the central longitudinal axis and an angle of between 10 ° with the central longitudinal axis up 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, that is to say approximately centrally within the output flat jet, is arranged obliquely or perpendicularly to the central longitudinal axis and intersects the central longitudinal axis.
  • a plane of the flat jet that is to say approximately centrally within the output flat jet
  • an arrangement obliquely downwards with an angle between 5 ° and 75 ° is preferred.
  • An angle between 5 ° and 175 ° can be selected for cleaning purposes or for roughening surfaces.
  • the plane of the output flat jet does not necessarily have to correspond to the plane in which the longer main axis lies and which is arranged perpendicular to the shorter secondary axis.
  • the actual exit plane of the flat jet is not only determined by the arrangement of the exit opening, but also by the design and, above all, the flow of the fluid channel up to the exit opening.
  • the main 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 concentric with the central longitudinal axis up to the outlet opening.
  • the flat jet nozzle according to the invention can thus be guided through extremely small spaces, for example between transport shafts in rolling mills, in an extremely space-saving manner.
  • the angle of the plane of the output flat jet does not necessarily correspond to the plane of the outlet opening or the plane in which the longer main axis lies and which is arranged perpendicular to the shorter secondary axis.
  • the desired exit angle of the flat jet can easily be determined and set by calculations or tests.
  • the outlet opening is arranged in an end section of the fluid channel with a spherical segment-like shape.
  • the outlet opening is created, for example, by cutting a spherical segment-like end section of the fluid channel.
  • cutting can be understood to mean that the nozzle housing is actually cut by means of a milling cutter, but it also means that cutting is referred to geometrically, that is to say the nozzle is cut by other methods, for example injection molding and sintering or casting. will be produced.
  • the arrangement of the outlet opening in an end section of the fluid channel with a 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 section having to be changed.
  • the outlet opening has an elliptical or elliptical shape.
  • the flat jet nozzle according to the invention is preferably used for descaling metal parts.
  • the flat jet When descaling metal parts using a water jet, it is generally required that the flat jet appear slightly obliquely on the metal surface to be descaled. With the nozzle according to the invention, this can also be achieved if the housing of the flat jet nozzle and in particular the central longitudinal axis of the nozzle housing is arranged perpendicular to the surface to be descaled. The flat jet nozzle according to the invention can thereby be arranged in an extremely space-saving manner.
  • a first rotational movement of the flat jet nozzle about a first rotational axis is provided in the use according to the invention, which is arranged perpendicular to a surface of the metal parts to be descaled and at a distance from the central longitudinal axis of the nozzle housing.
  • Improved descaling can be achieved by skillfully selecting the rotary movements of the flat jet nozzle.
  • a second rotational movement of the flat jet nozzle about a second rotational axis is provided, the second rotational axis being arranged at a distance from the first rotational axis and likewise 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 therefore rotates once around itself, that is to say around the central longitudinal axis of its nozzle housing, and, moreover, the nozzle housing is rotated about an axis of rotation which is arranged at a distance from the central longitudinal axis of the nozzle housing. So there is a superimposed rotational movement.
  • a plurality of flat jet nozzles according to the invention are arranged above the surface to be descaled and rotated in a coordinated manner about the first or 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, the first rotary movement and the second rotary movement being coordinated with one another in such a way that the flat jet generated by the flat jet nozzle is always at a constant angle of 0 ° to ⁇ 45 °, in particular perpendicular to the feed direction.
  • the flat jet generated by the flat jet nozzle or the flat jets generated by several flat jet nozzles thus always strike the surface to be descaled in such a way that a larger transverse dimension of the flat jets is always arranged at a constant angle, in particular perpendicular, to the feed direction.
  • the impact surface of the flat jets is elongated and their longer transverse dimension is thus arranged, for example, perpendicular to the direction of displacement, whereas their shorter transverse dimension is then arranged parallel to the direction of advance. This ensures maximum surface coverage.
  • the flat jets generated advantageously always strike the surface to be descaled at a predefined constant angle. Even during the rotation of the flat jet nozzle or the several flat jet nozzles, there are always optimal conditions for descaling a surface.
  • the flat jet nozzle according to the invention can of course generally be used to remove material or dirt by means of a high-pressure liquid jet.
  • the representation of the Fig. 1 shows a flat jet nozzle 10 according to the invention, the housing of which 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. How Fig. 1 It can be seen that the fluid channel extends concentrically to the central longitudinal axis 18 up to an outlet opening 20.
  • FIG Fig. 1 An exit plane of the flat jet 22 is shown in FIG Fig. 1 shown in dash-dot lines under reference number 24.
  • the exit plane 24 lies in the center of the emerging 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 Starting from the mouth of the feed channel 14, the fluid channel 16 initially runs with a constant diameter over approximately half of its total length.
  • a jet straightener 26 is arranged in the fluid channel 16 after approximately half its total length.
  • the jet director 26 has a plurality of flow guide surfaces which extend radially to the central longitudinal axis 18 and run parallel to the central longitudinal axis.
  • the jet straightener 26 is designed as a so-called soulless jet straightener, so that an area around the central longitudinal axis 18 remains free of internals.
  • the jet director 26 is pressed into a sleeve 40.
  • a cylindrical section 28 formed by the sleeve 40 which has approximately the length of the jet director 26 and the same diameter as the jet director 26.
  • the cylindrical section 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 section 32 which continues the diameter of the fluid channel at the end of the taper 28 to an end section of the fluid channel 16, wherein in the outlet section 20 is then arranged at the end section.
  • a further frustoconical taper 33 is provided in front of the outlet opening 20.
  • the end section is formed in sections by the second taper 33.
  • the outlet opening 20 can be placed in a region in the form of a spherical segment, which adjoins the taper 33.
  • the fluid channel 16 is formed within a nozzle housing 34 which, as has been stated, is fastened in the holder 12 and which has a base section 36 arranged in the holder 12, a coupling cap 38 arranged on the base section 36, a sleeve 40 and screwed into the coupling cap 38 has 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 section 28, the taper 30 and a part of the cylindrical section 32 of the fluid channel.
  • the nozzle mouthpiece 42 continues the cylindrical section 32 of the fluid channel and defines an end section of the fluid channel 16 with the outlet opening 20.
  • the union cap 38 is in turn fastened to the base section 36 by means of a union nut 41.
  • a seal is provided between the sleeve 40 and the nozzle mouthpiece 42.
  • the fluid channel 16 runs completely concentrically to the central longitudinal axis 18 of the nozzle housing 34 of the flat jet nozzle 10. Only the outlet opening 20 is arranged obliquely to the central longitudinal axis 18, so that the flat jet 22 also emerges obliquely to the central longitudinal axis 18.
  • Fig. 7 shows schematically the geometric relationships in the region of the outlet opening 20, which is arranged in the end section 35 of the fluid channel.
  • the outlet opening 20 of the nozzle according to the invention points in the schematic representation of the Fig. 7 an elliptical shape.
  • the outlet opening 20 can also have any elongated shape, for example elliptical, elliptical or oval.
  • the outlet opening 20 can have an irregular elongated shape, for example a calculated free form.
  • the outlet opening 20 always has a longer main axis 44 and a shorter secondary axis 46. If the outlet opening 20 has an irregular shape, this corresponds to The main axis 44 of a longer transverse dimension of the outlet opening and the secondary axis 46 of a shorter transverse dimension of the outlet opening 20.
  • the outlet opening 20 is now arranged in relation to the central longitudinal axis 18 in such a way that a plane 48, in which the longer main axis 44 lies and which is arranged perpendicular to the shorter secondary axis 46, intersects the central longitudinal axis.
  • the level 48 intersects in the representation of the Fig. 7 at a point 50 with the central longitudinal axis 18.
  • Center line 52 shown in dashed lines.
  • the center line 52 runs through the intersection of the major axis 44 and the minor axis 46 and then also intersects the central longitudinal axis 18 at point 50 Fig. 7 an imaginary impact surface 54 of the flat jet is shown. This impact surface 54 is divided into two halves by the plane 48.
  • the representation of the Fig. 7 is only schematic and that under real conditions the impact surface 54 is not exactly divided by the plane 48 in half.
  • the real flow conditions in the fluid channel play a role here.
  • 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 outlet opening 20 is arranged such that the plane 48 intersects the central longitudinal axis 18, in the illustration of FIG Fig. 7 at point 50.
  • the representation of the Fig. 2 shows the nozzle mouthpiece 42 opposite the Fig. 1 enlarged.
  • the in is clearly visible Fig. 2 outlet opening 20 located above.
  • the central longitudinal axis 18 of the nozzle housing is shown in dashed lines. How Fig. 1 can be seen, the nozzle mouthpiece is inserted into the cap 38.
  • the nozzle mouthpiece 42 can consist, for example, of hard metal, for example sintered hard metal, in order to achieve a good service life at the high fluid pressures from 100 bar, at which the flat jet nozzle according to the invention is used.
  • the cap 38 rests on contact surfaces 60 of the nozzle mouthpiece 42.
  • the escaping liquid 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 is shown in the view of FIG Fig. 3 has the shape of an ellipse flattened on one side. This is from the perspective of Fig. 3 caused, in fact the outlet opening 20 is elliptical.
  • the outlet opening 20 is arranged within a gate channel 62, which in FIG 2 and 3 can be seen.
  • the outlet opening 20 is created by pulling a milling cutter or a grinding wheel across the mouthpiece 42 and thereby cutting it.
  • Fig. 4 shows a view of the section plane BB in Fig. 2 .
  • the gating channel 62 and a section of the edge of the outlet opening 20 can be seen.
  • the shape of the end section 35 of the fluid channel can also be seen.
  • Fig. 5 shows a view of the section plane AA in Fig. 3 .
  • the central longitudinal axis 18 is thus within the section plane of the Fig. 5 .
  • the end section 35 of the fluid channel, in which the outlet opening 20 lies has a spherical segment-like shape.
  • the outlet opening 20 is, in turn, as shown in FIG Fig. 7 was explained, arranged obliquely to the central longitudinal axis 18, so that the plane 48 includes 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, is 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 section 35 of the nozzle mouthpiece 42, see Fig. 5 , The liquid is then deflected out of the direction of the central longitudinal axis 18. This only happens due to the oblique arrangement of the outlet opening 20 with respect to the central longitudinal axis 18.
  • the representation of the Fig. 6 schematically shows a plurality of flat jet nozzles 10 according to the invention, only the respective central longitudinal axes 18, the outlet openings 20 and the respectively output flat jet 22 being indicated schematically.
  • 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 direction of view in Fig. 6 is down on surface 66.
  • the central longitudinal axes 18 of the flat jet nozzles 10 are each perpendicular to the surface 66, so that the feed movement 68 of the surface 66 is perpendicular to the central longitudinal axes 18 of the flat jet nozzles 10.
  • the flat rays 22 that are respectively output thus strike the surface 66 at a slight angle, in the illustration of FIG Fig. 6 the flat beams 22 are therefore shown as being obliquely downward and directed against the feed direction 68.
  • Each of the flat jet nozzles 10 is rotated about the central longitudinal axis 18, which is indicated by a respective circular arrow.
  • each of the flat jet nozzles 10 is rotated about an axis of rotation 70 which is spaced apart is arranged to the central longitudinal axis 18 of the flat jet nozzles 10.
  • Each of the flat jet nozzles 10 thus executes two rotational movements.
  • a first rotational movement is about 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, the second axis of rotation coinciding with the central longitudinal axis 18.
  • Both axes of rotation 70, 18 are arranged perpendicular to the surface 66 to be descaled.
  • the angular velocity of the two rotational movements about the axis of rotation 70 and the central longitudinal axis 18 are coordinated with one another such 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.
  • a respective contact surface 54 of the flat jets 22, regardless of the rotational position of the respective flat jet nozzle 10, is always arranged at a constant angle, in particular perpendicular, to the feed direction 68 of 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 such that the flat jets 22 completely descaled the surface 66.
  • the amount of feed 68 is also adjusted accordingly.
  • the flat jets 22 therefore always meet the surface 66 at a slightly oblique angle and at a predefined angle. Independent of the rotational position of the flat jet nozzles 10, optimal conditions are therefore always created for the descaling of the surface 66.
  • the arrangement shown can be used not only for descaling surfaces, but also generally for removing material or dirt from surface 66.
  • the inside of pipes or bores can be cleaned or roughened by removing material.
  • Use in tubular openings or generally cavities is also possible.
  • external surfaces for example of pistons, can also be cleaned and roughened.

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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)
EP16159420.5A 2015-03-16 2016-03-09 Flachstrahldüse und verwendung einer flachstrahldüse Active EP3069794B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015204664.8A DE102015204664A1 (de) 2015-03-16 2015-03-16 Flachstrahldüse und Verwendung einer Flachstrahldüse

Publications (2)

Publication Number Publication Date
EP3069794A1 EP3069794A1 (de) 2016-09-21
EP3069794B1 true EP3069794B1 (de) 2020-05-27

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EP16159420.5A Active EP3069794B1 (de) 2015-03-16 2016-03-09 Flachstrahldüse und verwendung einer flachstrahldüse

Country Status (9)

Country Link
US (1) US20160271666A1 (zh)
EP (1) EP3069794B1 (zh)
JP (1) JP6258994B2 (zh)
KR (1) KR101889041B1 (zh)
CN (1) CN105983489A (zh)
CA (1) CA2922030C (zh)
DE (1) DE102015204664A1 (zh)
RU (1) RU2651146C2 (zh)
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CN105983489A (zh) 2016-10-05
CA2922030A1 (en) 2016-09-16
KR20160111344A (ko) 2016-09-26
RU2651146C2 (ru) 2018-04-18
JP6258994B2 (ja) 2018-01-10
JP2016172251A (ja) 2016-09-29
DE102015204664A1 (de) 2016-09-22
RU2016109242A (ru) 2017-09-18
UA116390C2 (uk) 2018-03-12
CA2922030C (en) 2019-02-26
KR101889041B1 (ko) 2018-08-20

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