EP2383047B9 - Nozzle device - Google Patents

Description

The invention relates to a nozzle device for arrangement on a high-pressure cleaning or conditioning of a paper machine with a nozzle body having a first nozzle channel for the passage of a high pressure liquid, wherein in the nozzle channel at least one at least partially cross-nozzle element is arranged, which the liquid passing through the nozzle channel forms a laminar jet.

In paper machines, high-pressure cleaning or conditioning devices are operated, for example, as transverse to the direction of the paper machine forming, so-called x-axis of the machine, oscillating transversely to this axis, high-pressure spray tubes, whose task is the continuous cleaning or conditioning of sheet forming screens, press felts , Dry covers and roll surfaces. Other forms of cleaning devices may, for example, be designed as so-called traversing cleaners, which can be moved, for example, along the crater of the paper machine and for the cleaning of clothing or other devices in different production sections of the paper machine be used. In this case, water is used at an operating pressure in the range of 10 to 50 bar, which is referred to as high pressure.

The said high-pressure spray pipes are provided with radially installed high-pressure spray nozzles, i. So-called needle jet nozzles or HD nozzles equipped. These HD nozzles emit a water jet, which is also referred to as a full jet or needle jet and has a substantially circular cross-section.

In that regard, the nozzle devices mentioned above are for example from the DE 295 09 934 U1 or the DE 20 2005 020 149 U1 whose main characteristic is the generation of a water jet with the best possible beam laminarity. This characterizes that the jet does not dissolve in single drops before it hits. This is achieved mainly by a high accuracy in the production of the channel. Is known from the DE 10 2006 007 223 A1 already also that to arrange on a nozzle body, a plurality of nozzle elements, whereby by means of a plurality of beams, a surface jet is to be generated in order to increase the area performance of the nozzle device. The nozzle body is fixed with an external thread as attachment with respect to its nozzle assembly.

From an economic and ecological point of view, the reduction of water consumption is one of the pressing issues of the paper producing industry. An important measure in this regard is the reduction of the jet diameter of HD nozzles, and thus the reduction of the volume flow, but at the same time the cleaning result must not suffer. In order to achieve higher production capacity and to achieve better paper quality, the efficiency of HD spray tubes, Which depends to a large extent on the nozzles, are constantly being improved.

It is therefore an object of the present invention to provide a nozzle device is available, which further increases the efficiency of HD spray tubes with a more flexible arrangement by a good cleaning result with reduced water consumption.

This object is achieved by a nozzle device of the type mentioned, in which at least one further nozzle element is provided on the nozzle body, which in each case in a different of the first nozzle channel further nozzle channel or together with the first and / or another nozzle member in a common nozzle channel is arranged and that the nozzle body is rotatably mounted on the nozzle device about its longitudinal axis without axial displacement.

Since a plurality of nozzle channels and / or nozzle elements are provided on a nozzle device, these can be provided with a smaller diameter, which on the one hand reduces the volume flow itself, two nozzle elements consume about 60% of the volume of a nozzle element whose diameter corresponds to the sum of the two nozzle elements, for three beams with 40% of the diameter of a larger jet, a reduction of the volume flow to half is observed.

Moreover, the water consumption is also reduced because the nozzle body is optimally adjustable by its rotation about the longitudinal axis with respect to the direction of the paper machine, and so a significant optimization of the setting can be achieved. The nozzle body is in principle rotatable during operation of the nozzle device but rotatable.

With regard to the arrangement of nozzle channels and nozzle elements on the nozzle device according to the invention, various embodiments are conceivable that represent different developments of the invention. In one of these, for example, the rotatable nozzle body may be provided with two or three nozzle elements, which each have their own nozzle channel is assigned or assigned to a common nozzle channel.

In a further embodiment of the nozzle device, the nozzle body may have a substantially circular cross-section and the nozzle channels and / or nozzle elements may be arranged on a line intersecting the center of the circle, for example in a symmetrical relative to the circle center configuration, the simple adjustment of the devices in relation to each other allowed at different outlet openings.

In a further embodiment of the nozzle device, at least two nozzle channels and / or nozzle elements may be arranged in the nozzle body at the same distance to different sides of the circle center and it may be in the center of an odd number of nozzle channels and / or nozzle elements of these. If, for example, the straight line on which the nozzle elements are arranged extends in the direction of the x-axis of the paper machine, a number of behind-the-jet beams corresponding to the nozzle channels and / or nozzle elements can be achieved.

Similarly advantageous may be by the arrangement of the nozzle elements of their adjustment to transverse to the x-axis optionally one wider area of only one nozzle device are coated, which can increase the cleaning intensity of the spray tube.

In other advantageous developments of the nozzle device according to the invention, the longitudinal axes of the nozzle channels and / or nozzle elements may include the same or different angles with the longitudinal axis of the nozzle body.

In other advantageous developments of the nozzle device according to the invention, at least a plurality of nozzle channels and / or nozzle elements may each have the same or different channel diameters.

If a nozzle device according to the invention has approximately two nozzle elements and optionally the same number of nozzle channels, it can emit two parallel or at an angle to each other water jet, and thus achieves a higher cleaning or conditioning performance on screening, felting and rolling a paper machine, as Nozzle devices with only one nozzle element. The position of the waterbeams can be set both to be in the x-direction one behind the other, as well as next to each other, with each position between these two positions. These manipulation possibilities make it possible, when the jet is arranged transversely to the x-axis of the machine, to double the total number of jets emitting the spray tube, which results in an increase in the cleaning or conditioning performance of the spray tube, and in addition the jets at an angle to the z-axis, resulting in an increase in the cleaning or conditioning performance of the spray tube and a more thorough cleaning of double-layered sheet forming screens result. When arranging the Beams in the x-axis can be achieved an increase in the cleaning or conditioning performance of each nozzle. With the arrangement of the beam in the x-axis or transversely to the x-axis can be achieved with a significantly reduced water consumption by the use of smaller nozzle elements and correspondingly reduced beam diameter, for example, when doubling the number of beams adequate cleaning or conditioning performance of the nozzle wherein, as already mentioned, the volume flow of two jets with a diameter of 0.5 mm at the same water pressure corresponds to only about 60% of the volume flow of a jet of 1.0 mm diameter.

In various embodiments, the nozzle elements of the nozzle device according to the invention can advantageously form an inflow-side section of the nozzle channel or channels and be formed there either through a passage opening of the relevant section of the nozzle body itself or as an insertion part accommodated in the respective nozzle channel and provided with a passage opening. Accordingly, in the first of the two cases, the opening which at least partially penetrates the nozzle body itself forms the nozzle element, whereas in the second case it is formed by an insert part inserted into this section and preferably pressed into a precisely fitting receptacle of the nozzle body. In both cases, the nozzle member opens downstream in the associated nozzle channel, which may also be a common channel.

In order to ensure an optimally laminar jet for a long time the insert part of a development of the nozzle device is advantageously provided from a hard, low-wear material such as ruby, sapphire, diamond, a ceramic, hard metal or similar hard material.

The laminar liquid jets, in particular jets of water, generated by the nozzle elements of the nozzle device according to the invention are in the sense of a marked reduction in the volume flow of liquid in each case to jets having a diameter in the range of 0.1 mm to 1.2 mm, preferably in the range from 0.2 mm to 0.9 mm, more preferably in the range of 0.3 mm to 0.6 mm.

In order to be able to transfer the nozzle body simply from a first position of use to one or more other positions of use, in a further development of the nozzle device the nozzle body is assigned a tool which has an engagement means by means of which the nozzle body can be rotated about its longitudinal axis.

In another expedient development of the nozzle device, which is particularly advantageous in the case of a plurality of nozzle channels, the engagement means can engage in at least one preferably slot-like opening of the nozzle body or in at least two outlet openings of the nozzle channels for rotating the nozzle body. For the slot-like opening of the nozzle body, which is expediently used with nozzle channels not parallel to the nozzle channels, the tool may be provided with an engagement means on the type of blade of a screwdriver, while in axially parallel, in particular substantially cylindrical nozzle channels, the tool with complementary cylinder pieces as engaging means is provided.

For easy handling of the nozzle device in the arrangement and removal from the outlet opening of the respective spray tube can - depending on the design of the recordings on the Cleaning device, for example, on a spray pipe - in another embodiment of the device of the nozzle body form an insert of a metallic material, which is accommodated in a carrier.

In order to be able to mount the nozzle device on the relevant cleaning device in a simple and reliable manner, it may be advantageous in one embodiment to provide the support with a coaxial engagement with the longitudinal axis of the nozzle body whose cross-section encloses the beam paths of the laminar jets of the nozzle elements over the height of the support , so that the rays can exit freely from the carrier.

At the same time, in another embodiment, a groove can advantageously be introduced in the engagement of the carrier and further the nozzle device can be assigned a tool, for example an Allen key, which is provided with a spring-loaded holding means, for example one or more balls, which engage in this groove intervention. Thereby, the nozzle device is held and can not fall off the tool.

Preferably, in this case, the carrier may be formed as a small plate or have a substantially cylindrically symmetrical body with at least one handle for attacking a tool, for example, characterized in that a longitudinal section with closed outer contour forms a polygon with six corners, so that a tool in the manner of an open-end wrench can simply attack or this section has a hexagonal engagement for inserting an Allen.

Particularly simple is an embodiment of the nozzle device in an outlet opening of a spray tube designed as Determine cleaning device by screwing, which is why in this the carrier may be provided with a fixing means in the manner of a threaded portion, in particular the carrier can be provided with an external thread for receiving in an outlet opening befindliches, associated internal thread. But it is also conceivable a carrier with an internal thread for screwing on an external thread, which is designed as a union nut.

In order to keep the nozzle body as an insert during use safely in its position of use and to prevent leakage, the insert in the carrier with a securing means can be fixed and sealed by a sealant. The sealing means may be an annular seal and the securing means may be a prestressed locking ring.

A further advantageous embodiment of the nozzle device can be acted upon by a cleaning tool on its inlet side, including the inflow openings of the nozzle elements, so that unintentional contamination of the nozzle openings, which are caused by foreign matter in the spray medium used, by the relevant, arranged within the spray tube cleaning tool, such as a rotating Brush, easy and safe to remove. For this purpose, it is advantageously possible to dispense with a flow channel arranged upstream of the nozzle element on the nozzle device.

Fig.1

eine perspektivische teildurchsichtige Seitenansicht eines ersten Ausführungsbeispiels des Düsenkörpers mit zwei Düsenelementen und zugeordneten Düsenkanälen zur Erzeugung zweier paralleler Wasserstrahle;

Fig.2

eine perspektivische teildurchsichtige Seitenansicht eines Zuströmabschnitts eines weiteren Ausführungsbeispiels der Düsenvorrichtung mit durch Einsetzteile gebildeten Düsenelementen zur Erzeugung zweier paralleler Wasserstrahle;

Fig.3

eine perspektivische teildurchsichtige Seitenansicht des Düsenkörpers zur Erzeugung zweier paralleler Wasserstrahle der Fig.1 mit zugeordnetem Werkzeug zum Verdrehen des Düsenkörpers zur Erzeugung zweier paralleler Wasserstrahle;

Fig.4

eine perspektivische teildurchsichtige Seitenansicht eines weiteren Ausführungsbeispiels der Düsenvorrichtung mit nicht koaxial zur Düsenkörperlängsachse verlaufenden Düsenkanälen und Düsenelementen zur Erzeugung zweier Wasserstrahle, die jeweils einen spitzen Winkel mit der Düsenkörperlängsachse einschließen;

Fig.5

eine perspektivische teildurchsichtige Seitenansicht eines weiteren Ausführungsbeispiels der Düsenvorrichtung mit drei zur Längsachse des Düsenkörpers parallelen Düsenelementen und Düsenkanälen zur Erzeugung dreier paralleler Wasserstrahle;

Fig.6

eine perspektivische teildurchsichtige Seitenansicht eines demjenigen der Fig.5 ähnlichen, weiteren Ausführungsbeispiels der Düsenvorrichtung mit durch Einsetzteile gebildeten Düsenelementen zur Erzeugung dreier paralleler Wasserstrahle;

Fig.7

die Ausführungsform der Fig.5 mit zugeordnetem Werkzeug zum Verdrehen;

Fig.8

perspektivische Seitenansichten des in verschiedenen Trägern aufgenommenen Ausführungsbeispiels der Düsenvorrichtung aus den Fig.1 und 3 zur Erzeugung zweier paralleler Wasserstrahle; und die

Fig.9

perspektivische Seitenansichten des in verschiedenen Trägern aufgenommenen Ausführungsbeispiels der Düsenvorrichtung aus den Fig.5 und 7 zur Erzeugung dreier paralleler Wasserstrahle.

In der Fig.1 ist zunächst eine im Ganzen mit 1 bezeichnete Düsenvorrichtung zu erkennen, wobei die Austrittsöffnung eines einer Reinigungseinrichtung an einer Papiermaschine zugeordneten Spritzrohres, in welchem die Düsenvorrichtung 1 anzuordnen ist, der Übersichtlichkeit wegen nicht dargestellt ist. Die Düsenvorrichtung 1 ist mit einem Düsenkörper 2 versehen, der zwei Düsenkanäle 3 zum Durchtritt einer mit hohem Druck beaufschlagten Flüssigkeit aufweist. In den beiden Düsenkanälen 3 ist jeweils ein Düsenelement 4 angeordnet, welches die den Düsenkanal 3 durchtretende Flüssigkeit jeweils zu einem laminaren Strahl formt.The invention is explained below with reference to embodiments in the drawing. In this case, in partially strongly schematized representation, they show

Fig.1

a perspective partially transparent side view a first embodiment of the nozzle body with two nozzle elements and associated nozzle channels for generating two parallel water jets;

Fig.2

a perspective partially transparent side view of an inflow section of another embodiment of the nozzle device with nozzle elements formed by insert parts for generating two parallel water jets;

Figure 3

a perspective partially transparent side view of the nozzle body for generating two parallel water jet the Fig.1 with associated tool for rotating the nozzle body to produce two parallel water jets;

Figure 4

a perspective partially transparent side view of another embodiment of the nozzle device with non-coaxial with the nozzle body longitudinal axis extending nozzle channels and nozzle elements for generating two water jets, each including an acute angle with the nozzle body longitudinal axis;

Figure 5

a perspective partially transparent side view of another embodiment of the nozzle device with three parallel to the longitudinal axis of the nozzle body nozzle elements and nozzle channels for generating three parallel water jets;

Figure 6

a perspective partially transparent side view of one of the Figure 5 similar, another embodiment of the nozzle device with nozzle elements formed by insert parts for producing three parallel water jets;

Figure 7

the embodiment of the Figure 5 with associated tool for twisting;

Figure 8

perspective side views of the recorded in various carriers embodiment of the nozzle device of the FIGS. 1 and 3 for generating two parallel water jets; and the

Figure 9

perspective side views of the recorded in various carriers embodiment of the nozzle device of the Fig.5 and 7 for generating three parallel water jets.

In the Fig.1 is first a generally designated 1 nozzle device to recognize, wherein the outlet opening of a cleaning device on a paper machine associated spray tube, in which the nozzle device 1 is to be arranged, for the sake of clarity is not shown. The nozzle device 1 is provided with a nozzle body 2, which has two nozzle channels 3 for the passage of a highly pressurized liquid. In each of the two nozzle channels 3, a nozzle element 4 is arranged, which in each case forms the liquid passing through the nozzle channel 3 into a laminar jet.

The nozzle body 2 of the nozzle device 1 is rotatably provided about its longitudinal axis, resulting in a different spatial arrangement of the nozzle elements 4 and their associated nozzle channels 3, which leads to a different beam arrangement of the beam 5. The nozzle body 2 has in the Fig.1 a substantially cylindrical Mold on and is provided at two heights of the cylinder body with circumferential grooves 6, in which when using the nozzle device as an insert part in a support, not shown, on the inner wall circumferential projections can intervene. These grooves serve on the one hand the mechanical securing of the nozzle body in the carrier, on the other hand, the seal.

At the upper inflow side of the nozzle body 2, the liquid enters the nozzle elements 4, which form the laminar jets 5, which after leaving the respective nozzle member 4 pass through the downstream portion of the nozzle channel 3, the inflow-side portion of which form the nozzle elements 4. Accordingly, the jets 5 pass through the nozzle body 2 in the direction indicated by the arrow.

In the Fig.2 is the inflow-side region of a nozzle body 2 of another nozzle device 1 can be seen, in which the nozzle elements 4 are formed by insert 20 of a very hard material, which form a not shown, precise laminar beam and are subjected to little wear. Here too, after the shaping of the jet 5, a respective passage through the downstream section of the nozzle channel 3 takes place.

In the Figure 3 is in the lower part of the figure one of the Fig.1 corresponding nozzle body 2 can be seen in a rotated by 180 ° about the transverse axis position, in which therefore therefore indicated by the arrow flow direction of the beam 5, not shown facing the viewer upwards. Above the nozzle body 2, a tool 7 can be seen, which is provided with a circular shaft 8 and two arranged on the shaft 8 at opposite areas handles. At the downstream end face the nozzle body 2 facing the end of the shaft 8 of the tool 7 protrude two pin-shaped engaging means 10 in the direction of the nozzle body 2, which are provided for engagement in the nozzle channels 3, and by means of this engagement, the nozzle body 2 can rotate about its longitudinal axis.

The presentation of the Figure 4 is different from the one of Figure 3 essentially by three characteristics. First, the nozzle channels 3 are arranged obliquely in the nozzle body 2, since their longitudinal axes with the longitudinal axis of the nozzle body 2 include an acute angle, otherwise the same channel diameter. The nozzle body has a slot-like engagement 11, in which a blade located on the associated tool 7 engages with appropriate positioning of the tool 7 for rotating the nozzle body 2. For better visibility of this circumstance, the lower part of the circular shaft 8 with grips 9 of the tool 7 in the Figure 4 shown in "incorrect" perspective view.

after the Fig.1 to 4 show the nozzle body 2 of a nozzle device with two nozzle elements 4 and at its downstream end with two nozzle channel openings, which are arranged at a distance equal to the circle of the end face of the nozzle body 2 straight from the circle center point the Fig.5 to 7 a nozzle device 1 with three jets 5, which extend parallel to the nozzle body longitudinal axis. Here, the nozzle elements 4 correspond to the Figure 5 those of Fig.1 , those of Figure 6 those of Fig.2 and the representation of Figure 7 with three nozzle elements and nozzle channels corresponds to that of Figure 3 , Also in the Fig.5 to 7 Each nozzle channel 3 is assigned its own nozzle element 4 for beam shaping, the openings of the nozzle channels 3 at the downstream end face of the nozzle body 2 are again on a straight line passing through the circle, wherein the two outer openings of the nozzle channels 3 have the same distance from the third located in the center. Differences may further exist in terms of the diameter of the jet 5 generated by the nozzle elements 4 and the diameter of the nozzle channels. Therefore, the diameter of the tool differs Figure 7 arranged engaging means 10, of which instead of the number of three nozzle channels according to only necessary for the rotation of the nozzle body number of two engagement means from the tool 7 is projecting out, which can engage in the two outer nozzle channels 3.

In the 8 and 9 are the nozzle bodies 2 as inserts in different carriers 12, 13, 14 with two jets 5 Figure 8 ) and three beams 5 ( Figure 9 ), in which the left-hand carrier 12 forms a so-called platelet nozzle, in which the nozzle body 2 accommodates the nozzle channels 3 and / or the nozzle elements 4, after the passage of which the jets 5 in FIG 8 and 9 unrecognizable single or enter a common nozzle channel. The middle and the right supports 13, 14 are in the 8 and 9 each formed as a substantially cylindrically symmetrical body and have a handle 15 for engaging a tool in the form of an external hexagon or a handle, not shown, for engaging a tool in the form of a hexagon socket and an external thread 16 for the arrangement of the nozzle devices 1 in not shown outlet openings of a spike a cleaning device a paper machine, wherein the threaded portions 16 in the representations of 8 and 9 on the nozzle devices 1 on the inflow side and the handles 15 are arranged downstream, to allow accessibility from the outside in the sense of arrangement or removal. Moreover, in the middle carrier 13, the threaded portion 16 has a larger diameter than the handle 15, while this behaves vice versa in the right-hand carrier 14. Moreover, the inflow sides of the nozzle body 2 with the nozzle elements 4 of the nozzle channels 3 can be seen better in the left and in the middle carrier 12, 13, while the right-hand carrier 14 the outflow-side openings of the nozzle channels 3 is better visible. Not shown are the 8 and 9 the nozzle body of the nozzle device during operation holding in its position of use, annular securing means and also annular sealing means for sealing the assembly.

Accordingly, the invention described above relates to a nozzle device 1 for placement on a high-pressure cleaning or conditioning device of a paper machine with a nozzle body 2 having a first nozzle channel 3 for the passage of a highly pressurized liquid, wherein in the nozzle channel 3 at least one of these at least partially penetrating nozzle element 4 is arranged, which forms the liquid flowing through the nozzle channel 3 to a laminar beam 5. In order to have a nozzle device 1 available, which increases the efficiency of the spray tube by a good cleaning result with reduced water consumption, it is inventively provided that at least one further nozzle element 4 is provided on the nozzle body 2, which in each case in one of the first nozzle channel. 3 various other nozzle channel 3 or together with the first and / or a further nozzle element 4 is arranged in a common nozzle channel 3 and that the nozzle body 2 is rotatably mounted on the nozzle device 1 about its longitudinal axis without axial displacement.

Claims (19)

1. A nozzle arrangement (1) to be arranged on a highpressure cleaning or conditioning device of a paper machine with a nozzle body (2) comprising a first jet channel (3) adapted for passing liquid impinged with high pressure, wherein at least one nozzle element (4) is arranged in the jet channel (3) and at least partially penetrating the jet channel, the nozzle element is adapted to form the liquid passing through the jet channel (3) into a laminar jet, characterized in that at least one additional nozzle element (4) is provided in the nozzle body, wherein the nozzle element is respectively arranged in an additional jet channel (3) different from the first jet channel (3) or is arranged together with the first and/or an additional nozzle element (4) in a joint jet channel (3), and that the nozzle body (2) is rotatably arranged on the nozzle arrangement (1) about its longitudinal axis without any axial offset.
2. The nozzle arrangement according to claim 1, characterized in that the nozzle body (2) comprises two or three nozzle elements (4), each having a separate jet channel (3) respectively allocated to them or the joint jet channel (3).
3. The nozzle arrangement according to claim 1 or 2, characterized in that the nozzle body (2) has an essentially circular cross-section and the nozzle elements (4) are arranged on a straight line intersecting a center of the cross-section.
4. The nozzle arrangement according to claim 3, characterized in that at least two of the nozzle elements (4) and/or jet channels (3) of the nozzle body (2) are arranged at different sides with a same distance from the center of the cross-section and with one of the nozzle elements being located in a center of the cross-section if the number of nozzle elements (4) is odd.
5. The nozzle arrangement according to one of the preceding claims, characterized in that the longitudinal axis and/or longitudinal axes of the jet channel or channels (3) and/or nozzle elements (4) are arranged parallel to the longitudinal axis of the nozzle body (2) or wherein the longitudinal axis and/or longitudinal axes of the jet channels (3) each form an acute angle with the longitudinal axis of the nozzle body (2).
6. The nozzle arrangement according to claim 5, characterized in that the longitudinal axes of the jet channels (3) and/or nozzle elements (4) comprise the same or respectively different angles with the longitudinal axis of the nozzle body (2).
7. The nozzle arrangement according to one of the preceding claims, characterized in that at least a majority of jet channels (3) and/or nozzle elements (4) have the same channel diameters or each have different channel diameters to one another.
8. The nozzle arrangement according to one of the preceding claims, characterized in that the nozzle elements (4) form a section at an inlet side of the jet channel or channels (3) and are formed there either by a penetrating opening of a respective section of the nozzle body (2) itself, or as an insert (20) having a penetrating opening that is received in the jet channel (3).
9. The nozzle arrangement according to claim 8, characterized in that the insert (20) is made from ruby, sapphire, diamond, ceramics, hard metal, or a similarly hard material.
10. The nozzle arrangement according to one of the preceding claims, characterized in that the nozzle elements (4) each create a laminar jet having a diameter ranging from 0.1 mm to 1.2 mm, preferably ranging from 0.2 mm to 0.9 mm, especially preferably ranging from 0.3 mm to 0.6 mm.
11. The nozzle arrangement according to one of the preceding claims, characterized in that a tool (7) is allocated to the nozzle arrangement (1), which comprises an engagement element (10) by which the nozzle body (2) is rotatable about its longitudinal axis.
12. The nozzle arrangement according to claim 11, characterized in that the engagement means (10) for rotating the nozzle body (2) engages at least one preferably slot-like opening (11) of the nozzle body (2) provided for that purpose or at least two outlet openings of the jet channels (3).
13. The nozzle arrangement according to one of the preceding claims, characterized in that the nozzle body (2) forms an insert made from a metallic material, which is insertable into a carrier (12, 13, 14).
14. The nozzle arrangement according to one of the preceding claims, characterized in that a contact is provided at the carrier (12, 13, 14), coaxial to the longitudinal axis of the nozzle body, with a cross-section of the carrier covering flow paths of laminar jets (5) of the nozzle elements (4) over a height of the carrier (12,13,14).
15. The nozzle arrangement according to claim 14, characterized in that a groove is advantageously located on the contact of the carrier (12, 13, 14), and a tool is allocated to the nozzle arrangement (1), which comprises an engagement means to engage the groove in a detachable fashion, preferably with one or more spring-loaded balls.
16. The nozzle arrangement according to one of the claims 13 to 15, characterized in that the carrier (12, 13,14) is embodied as a platelet (12) or shows an essentially cylinder-symmetric body (13, 14) with at least one contact surface (15) for the engagement of a tool.
17. The nozzle arrangement according to one of the claims 13 to 16, characterized in that the carrier (12, 13, 14) is provided with a fastening means, especially with a threaded section (16).
18. The nozzle arrangement according to one of the claims 13 to 17, characterized in that the insert is held in the carrier (12, 13, 14) by a fastening element, for example a suitable fitting, and/or can be sealed with a sealant.
19. The nozzle arrangement according to one of the preceding claims, characterized in that the inlet side including the inlet openings of the nozzle elements (4) is adapted to be impinged by a cleaning device.

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