EP3714991B1 - Spray device for spraying fluids - Google Patents

Description

The invention relates to a spray device for spraying fluids.

From the GB 1 051 189 A a device for cleaning containers is known, which comprises a liquid dispensing tube, a carrier part 5 rotatably mounted at the outlet end of the tube, a drive unit for rotating the carrier part about the longitudinal axis of the tube and at least one nozzle which is attached to the carrier part and relative to the part can be rotated about an axis includes. It is provided here that the axis runs obliquely both in relation to the axis of rotation of the carrier part and to its own longitudinal axis. The nozzle is rotated by a gear which meshes with another gear which is rigidly connected to the tube. Furthermore, a pair of nozzles is provided, to which a fluid can each be supplied via two coaxial tubes, the nozzles being connected to parallel channels directed in opposite directions.

From the DE 199 38 435 a cleaning device for containers is known, which comprises a spray head and a bearing part, with the spray head being rotatably held on the bearing part by means of a bearing, with a spacing space being arranged between the bearing part and the spray head, which is spatially connected to the environment, and with the spray head has at least one spray nozzle, the rinsing liquid by means a detergent supply line can be fed. Furthermore, it is provided that the spacing space is spatially connected to the detergent supply line.

The object of the invention is to provide a spray device that enables an improved cleaning effect.

This object is achieved for a spray device of the type mentioned with the features of claim 1. The spray device according to the invention comprises a spray boom, which has an outer tube, an inner shaft that is rotatably mounted in the outer tube about a first axis of rotation, and a nozzle carrier that is coupled to the inner shaft and rotatably mounted relative to the outer tube, with a first input connection on the outer tube for providing a first fluid to the Spray boom and a second inlet port are designed to provide a second fluid to the spray boom, the first inlet port being connected in fluidic communication to a first fluid channel in the outer tube and to a first nozzle channel in the nozzle carrier, and the second inlet port being connected to a second fluid channel in the outer tube and is connected in fluidic communication with a second nozzle channel in the nozzle carrier, wherein the inner shaft is provided with at least one first transverse bore which is aligned transversely to the first axis of rotation and is connected in fluidic communication with the first fluid channel.

With the help of such a spray boom, different fluids can be supplied to a surface to be cleaned or in a container interior to be cleaned. By way of example, it is provided that a cleaning fluid, for example a mixture of water and cleaning agent, is made available at the first input connection, while a flushing fluid, for example water, is made available at the second input connection. In this case, the nozzle carrier can be equipped with different spray nozzles, which are each adapted to the fluid made available at the corresponding input connection. In addition or as an alternative, provision can also be made for the same fluid to be made available at both input connections and only to use the properties of the spray nozzles, which may have different designs and which are assigned to the first input connection or the second input connection. In particular, provision can be made for specifying a time sequence for the provision of fluid at the first input connection and at the second input connection in order to be able to bring about specific cleaning effects.

The possibility of rotating the nozzle carrier relative to the outer tube ensures an advantageous cleaning effect, since a spatial orientation of the spray nozzles arranged on the nozzle carrier and assigned to the respective nozzle channels can be changed during the course of the rotational movement.

It is preferably provided that at least two spray nozzles accommodated on the nozzle carrier are assigned to the first input connection and/or the second input connection.

It is expedient if the first fluid channel is designed as a bore in the inner shaft. In this way, a space-saving fluid supply can be realized from the first inlet connection to the first nozzle channel.

According to the invention, it is provided that the inner shaft is provided with at least one first transverse bore, which is aligned transversely to the first axis of rotation and is connected to the first fluid channel in fluidic communication. This will create a Realize structurally simple supply of fluid starting from the first input port in the bore of the inner shaft. Provision is preferably made for the first transverse bore to be arranged opposite the first input connection. If a pulsating fluid flow is desired, it can be provided that there is a fluidically communicating connection between the first input connection and the bore in the inner shaft only when the transverse bore is opposite the first input connection. If, on the other hand, a continuous fluid flow is desired from the first input connection into the bore of the inner shaft, a circumferential turning in the manner of a circumferential groove, which is also referred to as an annular groove, on the inner shaft and/or a circumferential turning in the manner of a circumferential groove, which is referred to as an annular groove in FIG.

In a development of the invention, it is provided that the inner shaft is non-rotatably connected to a coupling body and that the nozzle carrier is mounted on the coupling body so that it can rotate about a second axis of rotation, with the first axis of rotation and the second axis of rotation enclosing an angle of between 90 degrees and 180 degrees, and with a gear device which is designed to couple the movement of the nozzle carrier to the outer tube. Due to the rotatable mounting of the nozzle carrier on the coupling body, the nozzle carrier can perform a rotational movement around the second axis of rotation when the inner shaft and the coupling body coupled thereto rotate, with this rotational movement of the nozzle carrier possibly being independent of the rotational movement of the coupling body around the first axis of rotation. For example, it can be provided that the spray nozzles on the nozzle carrier are aligned in such a way that during a spraying process, a torque is exerted on the nozzle carrier, so that it is caused to rotate about the second axis of rotation solely by the spraying process. Alternatively, a positive coupling can be provided between the nozzle carrier and the outer tube, whereby when the coupling body rotates about the first axis of rotation, there is a forced rotary movement of the nozzle carrier both about the first axis of rotation and about the second axis of rotation, and thus there is a superimposition of two rotary movements for the nozzle carrier , With which it can be ensured that the fluid emerging from the spray nozzles can be advantageously distributed in a large volume of space.

It is advantageous if a first connecting channel for connecting the first fluid channel in the outer tube to the first nozzle channel of the nozzle carrier is formed in the coupling body, and if a second connecting channel for connecting the second fluid channel in the outer tube to the second nozzle channel of the nozzle carrier is formed in the coupling body. This enables a compact design of the spray boom, since the fluid provided at the first input connection and the fluid provided at the second input connection can be conveyed not only within the outer tube and the nozzle carrier, but also within the coupling body.

In a further embodiment of the invention, the outer tube accommodates a sleeve body that is rotationally symmetrical to the first axis of rotation and has a longitudinal bore that extends along the first axis of rotation and delimits the second fluid channel at least in sections with an outer wall of the inner shaft. The sleeve body thus serves to delimit the second fluid channel however, be additionally provided with bearing means and/or sealing means in order to ensure, for example, a fluid-tight separation from the first input connection and the first fluid channel and also to ensure the rotatable mounting of the inner shaft in relation to the outer tube. By way of example, it is provided that the sleeve body is mounted in a mouth opening of the outer tube facing away from the drive housing, in particular screwed in there.

Provision is preferably made for the sleeve body to be provided with at least one second transverse bore, which is preferably arranged opposite the second inlet connection and is aligned transversely to the first axis of rotation, which is connected to the second fluid channel in fluidic communication.

It is expedient if a rotating gear, in particular designed as a bevel gear, is formed on an end face of the sleeve body. This gear wheel, together with teeth formed on the nozzle carrier, forms a gear mechanism with which a movable forced coupling can be realized between the outer tube and the nozzle carrier. The alignment of the first axis of rotation and the second axis of rotation as well as the design of the gear wheel on the sleeve body and the toothing on the nozzle holder are coordinated in such a way that the toothing on the nozzle holder engages in the gear wheel on the sleeve body at exactly one point and thus during a rotational movement of the coupling body Rolling movement of the teeth on the nozzle holder takes place in relation to the gear on the sleeve body.

In an advantageous development of the invention, it is provided that the coupling body has a coaxially aligned to the second axis of rotation bearing socket on which the Nozzle carrier is rotatably mounted, wherein the bearing socket has a plurality of coaxially aligned to the second axis of rotation annular grooves which are designed to accommodate sealing means and / or bearing means. The bearing stub thus serves on the one hand for the rotatable mounting of the nozzle carrier on the coupling body, bearing means such as ball bearings or plain bearings being accommodated in one or more of the annular grooves of the bearing stub for this purpose. Furthermore, the annular grooves make it possible to implement a seal between the bearing support and the nozzle carrier, which is particularly important with regard to the fluid supply between the inlet connections and the nozzle channels.

It is advantageous if a first spray nozzle is accommodated in the first nozzle channel of the nozzle carrier and if a second spray nozzle is accommodated in the second nozzle channel of the nozzle carrier, the first spray nozzle having a shorter length and/or a smaller spray opening than the second spray nozzle. Due to the geometrically different design of the first spray nozzles and the second spray nozzles, a first fluid that is provided at the first inlet connection can be sprayed in a different way than a second fluid that is provided at the second inlet connection.

Figur 1

eine Schnittdarstellung einer ersten Ausführungsform einer Sprühvorrichtung in einer ersten Rotationsstellung,

Figur 2

eine Schnittdarstellung der ersten Ausführungsform der Sprühvorrichtung in einer zweiten Rotationsstellung,

Figur 3

eine perspektivische Darstellung der ersten Ausführungsform der Sprühvorrichtung gemäß den Figuren 1 und 2,

Figur 4

eine perspektivische Darstellung des in der ersten Ausführungsform verwendeten Koppelkörpers,

Figur 5

eine Schnittdarstellung einer zweiten Ausführungsform einer Sprühvorrichtung, und

Fig. 6

eine perspektivische Darstellung der zweiten Ausführungsform der Sprühvorrichtung gemäß der Figur 5

Advantageous embodiments of the invention are shown in the drawing. This shows:

figure 1

a sectional view of a first embodiment of a spray device in a first rotational position,

figure 2

a sectional view of the first embodiment of the spray device in a second rotational position,

figure 3

a perspective view of the first embodiment of the spray device according to figures 1 and 2 ,

figure 4

a perspective view of the coupling body used in the first embodiment,

figure 5

a sectional view of a second embodiment of a spray device, and

6

a perspective view of the second embodiment of the spray device according to FIG figure 5

one in the Figures 1 to 3 The first exemplary embodiment of a spray device 50 shown is designed for cleaning a container interior with preferably two different fluids, for example with cleaning foam as the first fluid and water as the second fluid.

The spray device 50 comprises according to Figures 1 to 3 a drive device 1, which has a drive, not shown in detail in the drawings, in particular designed as an electric motor with a downstream gear, which is accommodated in a drive housing 21, only partially shown. Furthermore, the spray device 50 comprises a spray boom 3 coupled to the drive housing 21.

The drive housing 21 and an outer tube 14 of the spray boom 3 of the spray device 50 are firmly connected to one another, for example the end of the spray boom 3 is inserted into an axially aligned recess 10 in the drive housing 21 and fixed with a screw connection, not shown. By way of example, the spray boom 3 is designed to be fastened to a container wall 51 shown only schematically in dashed lines. For this purpose, for example, an annular collar (not shown) can be formed on the hollow-cylindrical outer tube 14 of the spray boom 3, which can be used as a fastening flange to screw the spray boom 3 to the container wall 51 by means of fastening screws not shown in detail.

The drive device 1 comprises a drive shaft 20 which is designed, for example, as a transmission output shaft of an electric geared motor and which according to the illustration in FIG figures 1 and 2 protrudes downwards in the vertical direction and which is designed to provide a rotational movement about a first axis of rotation 22, and a clutch 2 arranged at the end on the drive shaft 20, which, for example, as a claw clutch with a coupling element (not shown in more detail) accommodated between opposing claw arrangements and made of an elastic Material, in particular as an elastomer coupling, can be realized.

An inner shaft 15 is mounted in the outer tube 14 of the spray boom 3 so that it can rotate about the axis of rotation 22 and is coupled to the drive shaft 20 in a rotationally fixed manner by means of the clutch 2 . The inner shaft 15 is penetrated in sections by a first fluid channel 16, which runs along the first axis of rotation 22 between first transverse bores 17, which are introduced into the inner shaft 15 transversely to the first axis of rotation 22 adjacent to the drive device 1, and an end-side bore remote from the drive device 1 arranged orifice 18 extends.

In the area of the first transverse bores 17 , a circumferential first annular channel 19 is formed in the outer tube 14 , which ensures a fluidly communicating connection between a first input connection 23 of the outer tube 14 and the first transverse bores 17 and the first fluid channel 16 .

On an end region of the outer tube 14 facing away from the drive 1 , a sleeve body 5 embodied purely as an example rotationally symmetrical to the first axis of rotation 22 is accommodated in the outer tube 14 . The sleeve body 5 is non-rotatably connected to the outer tube 14 and has a longitudinal bore 24 extending along the first axis of rotation 22 passing through it, in which the inner shaft 15 runs in sections. A gear 25 designed in the manner of a bevel gear is integrally formed on a front end region of the sleeve body 5 and protrudes slightly beyond the outer tube 14 . Furthermore, a sealing ring 9 is provided between the inner shaft 15 and the sleeve body 5 in order to ensure, at least in sections, a fluid-tight mounting of the inner shaft 15 with respect to the sleeve body 5 .

The inner shaft 15 is rotatably mounted and sealed in the outer tube 14 . For this purpose, sliding bearings 11, 12 are arranged between the outer tube 14 and the inner shaft 15. Furthermore, sealing rings 13 are provided between the outer tube 14 and the inner shaft 15 in order to ensure, at least in sections, a fluid-tight mounting of the inner shaft 15 relative to the outer tube 14 .

A coupling body 35 and a nozzle carrier 30 attached thereto are arranged on an end region of the outer tube 14 facing away from the drive device 1 . In this case, the coupling body 35 is coupled to the inner shaft 15 in a torque-proof manner with a socket section 61 .

The nozzle carrier 30 is provided on an upper side 31 , which is of planar design purely by way of example, with a peripheral toothing 32 which is arranged radially on the outside and has a circular circumference, which is designed for engaging in the gear wheel 25 of the sleeve body 5 . During a rotational movement of the nozzle carrier 30 about the first axis of rotation 22, which can be brought about by a rotation of the inner shaft 15 and the coupling body 35 connected to it in a rotationally fixed manner, there is a rolling movement of the teeth 32 of the nozzle carrier 30 on the gear wheel 25 of the sleeve body 5, from which a Rotational movement of the nozzle carrier 30 results about a second axis of rotation 33 which, purely by way of example, is aligned at an angle 60 of 135 degrees with respect to the first axis of rotation 22 . For this purpose, the first nozzle carrier 30 is mounted on the coupling body 35 such that it can rotate about the second axis of rotation 33 .

The coupling body 35 has a first connecting channel 38 passing through it, which is aligned coaxially to the first axis of rotation 22 at least in some areas and is in fluid communication with the first fluid channel 16 . Furthermore, the first connecting channel 38 runs in sections coaxially to the second axis of rotation 33 and is connected in fluid communication at an end region facing away from the inner shaft 15 to second transverse bores 39, which in turn are introduced into the coupling body 35 transversely to the second axis of rotation 33.

As the representation of figure 1 can be seen, extend in the nozzle carrier 30, starting from an annular channel 40, which is arranged radially circumferentially in the region of the second transverse bores 39 of the coupling body 35, first nozzle channels 41, which extend obliquely to the second axis of rotation 33 in the radial direction outwards and which are in the first nozzle receptacles 42 flow out. In the purely exemplary designed as threaded holes first nozzle receptacles 42 are each first spray nozzles 43 screwed, which have spray openings not shown. A first fluid, in particular a liquid, can emerge from the spray openings, which is provided at the first inlet connection 23 of the outer tube 14 and can be conducted via the first fluid channel 16 and the first connecting channel 38 and the first nozzle channels to the nozzle receptacles 42 .

For example, the coupling body 35 has a first annular, in particular flat, cut surface 36 which is arranged opposite a flat end face 6 of the sleeve body 5 . Between the cut surface 36 and the flat end face 6 of the sleeve body 5 there is a circular ring-shaped sliding bearing 7 , shown only schematically, which is used for the rotatable support of the coupling body 35 on the sleeve body 5 . In an outer area of the first cut surface 36 there is a circumferential groove 37 into which the gear wheel 25 of the sleeve body 5 protrudes freely.

A further annular slide bearing 8 is arranged between a second, planar cut surface 101 facing the nozzle carrier 30 and the upper side 31 of the nozzle carrier 30 arranged opposite.

As a result of the interaction of teeth 32 of nozzle carrier 30 with gear wheel 25, when the inner shaft 15 rotates relative to outer tube 14, a rotational movement of nozzle carrier 30 about first axis of rotation 22 is superimposed on a rotational movement of nozzle carrier 30 about second axis of rotation 33, as a result a emerging from the first spray nozzles 43 first fluid can be sprayed in a volume of space not shown.

Furthermore, a second inlet connection 44 is formed on the outer tube 14 , which enables a second fluid to be fed into a second annular channel 45 formed between the outer tube 14 and the sleeve body 5 . The second annular channel 45 is in fluid communication with third transverse bores 46, which are introduced into the sleeve body 5 transversely to the first axis of rotation 22, with a line along the first axis of rotation 22 between an inner wall 47 of the sleeve body 5 and an outer wall 49 of the inner shaft 15 up to Coupling body 35 extending second fluid channel 48 designed as an annular channel.

As the representation of figure 2 can be seen, which shows the spray device 50 in a second rotational position for the nozzle carrier 30, the nozzle carrier 30 has parallel to the second axis of rotation 33 running second nozzle channels 54, for example designed as cylindrical bores. The second nozzle channels 54 each open into second nozzle receptacles 55 in which second spray nozzles 56 are accommodated. The second spray nozzles 56 are embodied in several parts purely by way of example and have a greater longitudinal extension compared to the first spray nozzles 43 .

In order to ensure a fluidically communicating connection between the second fluid channel 48 and an annular groove 53 formed in the nozzle carrier, a plurality of second connecting channels 58, 59 formed as bores are formed in the coupling body 35, one of the connecting channels 58 being straight as an example and one of the connecting channels 59 being purely an example is angled. Furthermore, the annular groove 53 is in fluidically communicating connection with the nozzle channels 54, so that a fluid provided at the second input connection 44 can be passed through the outer tube 14 to the coupling body 35 and from there via the nozzle carrier 30 to the second spray nozzles 56.

When the inner shaft 15 rotates relative to the outer tube 14, the rotational movement of the nozzle carrier 30 about the first axis of rotation 22 is superimposed for the second spray nozzles 56 in the same way with the rotational movement of the nozzle carrier 30 about the second axis of rotation 33, as a result of which the second spray nozzles 56 exiting second fluid can be sprayed in a volume of space not shown.

As the representation of figure 4 As can be seen, the coupling body 35 has, purely by way of example, a base body 100 designed as a hemispherical section, from which the bearing stub 62, which is aligned coaxially with the second axis of rotation 33 and is designed for the rotatable mounting of the nozzle carrier 30, protrudes. For this purpose, the bearing stub 62 is provided with a plurality of annular grooves 63, 64 aligned coaxially with the second axis of rotation 33, which are designed to accommodate sealing means 102 or bearing means 103, as shown in the illustrations in FIGS figures 1 and 2 are recognizable.

In the figure 5 and Fig.6 a second embodiment of a spray device 65 is shown by way of example, which is designed for surface cleaning. The spray device 65 has a simplified design compared to the spray device 50, since no complex superimposition of rotational movements is required for surface cleaning.

In the case of the spray device 65 , an outer tube 66 is fixed to a drive housing 67 . In the drive housing 67 is a drive motor, not shown in detail, which can be, for example, an electric geared motor, was added. A drive shaft 68 of the drive motor is mounted on the drive housing 67 so as to be rotatable about a first axis of rotation and is non-rotatably connected via a coupling to an inner shaft 71 which is mounted rotatably in the outer tube 66 . The inner shaft 71 is coupled in a torque-proof manner to a nozzle carrier 72 which is rotatably mounted on an end face 73 of the outer tube 66 facing away from the drive housing 67 . For this purpose, annular sealing arrangements 75 , 76 and 77 are arranged concentrically to one another and coaxially to the first axis of rotation 69 between the end face 73 of the outer tube 66 and an opposite end face 74 of the nozzle carrier 72 .

A first inlet connection 78 and a second inlet connection 79 are formed on the outer tube 66 . In this case, the first inlet connection 78 is designed to provide a first fluid to the nozzle carrier 72 , while the second inlet connection 79 is designed to provide a second fluid to the nozzle carrier 72 . For a fluidically communicating connection between the first inlet connection 78 and the nozzle carrier 72 , a first fluid channel 90 , in particular designed as a longitudinal bore parallel to the first axis of rotation 69 , is introduced into the outer tube 66 . For a fluidically communicating connection between the second inlet connection 79 and the nozzle carrier 72 , a second fluid channel 91 , designed in particular as a longitudinal bore parallel to the first axis of rotation 69 , is introduced into the outer tube 66 .

A first annular groove 81 located radially on the inside and a second annular groove 82 located radially on the outside are formed in the end face 74 of the nozzle carrier 72 opposite the outer tube 66. which are in fluid communication with the first longitudinal bore 81 and the second longitudinal bore 82, respectively. Starting from the first annular groove 81, a first nozzle channel 83 extends to a first nozzle receptacle 85, in which a first spray nozzle 87 is accommodated. Starting from the second annular groove 82, a second nozzle channel 84 extends to a second nozzle receptacle 86, in which a second spray nozzle 88 is accommodated.

When the inner shaft 71 rotates relative to the outer tube 66 and when a first fluid is supplied at the first inlet connection 78 and a second fluid is supplied at the second inlet connection 79, the first fluid is sprayed through the first spray nozzles 87 and the second fluid is sprayed through the second spray nozzles 88 , with which the first fluid and the second fluid can be introduced into a spatial region, which is purely exemplary in the form of a cone section, and can be applied in a circular area, for example, to a surface oriented perpendicularly to the axis of rotation 69 .

Claims (10)

1. A spray device (50, 65) for spraying fluids, comprising a spray boom (3; 93) including an outer tube (14; 66), an inner shaft (15; 71) rotatably mounted in the outer tube (14; 66) about a first axis of rotation (22; 69), and a nozzle carrier (30; 72) coupled to the inner shaft (15; 71) and rotatably mounted relative to the outer tube (14); 72), wherein a first inlet connection (23; 78) for providing a first fluid to the spray boom (3; 93) and a second inlet connection (44; 79) for providing a second fluid to the spray boom (3; 93) are formed on the outer tube (14), wherein the first inlet connection (23; 78) being connected in fluid communication with a first fluid channel (16; 90) in the outer tube (14; 66) and with a first nozzle channel (41; 83) in the nozzle carrier (30; 72), and the second input connection (44; 79) being connected to a second fluid channel (48; 91) in the outer tube (14; 66) and to a second nozzle channel (54; 84) in the nozzle carrier (30; 72) in fluid communication, characterized in that the inner shaft (15) is provided with at least one first transverse bore (17) which is aligned transversely with respect to the first axis of rotation (22) and is connected in fluid communication with the first fluid channel (16).
2. Spray device according to claim 1, characterized in that the first fluid channel (16) is formed as a bore in the inner shaft (15).
3. Spray device according to claim 2, characterized in that the first transverse bore (17) is arranged opposite the first input port (23).
4. Spray device (50, 65) according to claim 1, 2 or 3, characterized in that the inner shaft (15) is connected to a coupling body (35) in a rotationally fixed manner and in that the nozzle carrier (30) is mounted on the coupling body (35) in a rotationally movable manner about a second axis of rotation (33), wherein the first axis of rotation (22) and the second axis of rotation (33) enclose an angle (60) between 90 degrees and 180 degrees, as well as with a gear device (25, 32) which is designed for a motion coupling of the nozzle carrier (30) to the outer tube (14).
5. Spray device (50, 65) according to claim 4, characterized in that a first connecting channel (38) for connecting the first fluid channel (16) in the outer tube (14) to the first nozzle channel (41) of the nozzle carrier (30) is formed in the coupling body (35) and that a second connecting channel (58, 59) for connecting the second fluid channel (48) in the outer tube (14) to the second nozzle channel (54) of the nozzle carrier (30) is formed in the coupling body (35).
6. Spray device according to claim 4 or 5, characterized in that a sleeve body (5) formed rotationally symmetrical to the first axis of rotation (22) is accommodated in the outer tube (14), which sleeve body (5) has a longitudinal bore (24) extending along the first axis of rotation (22), which longitudinal bore (24) delimits the second fluid channel (48) at least in sections with an outer wall (49) of the inner shaft (15) .
7. Spray device according to claim 6, characterized in that the sleeve body (5) is provided with at least one second transverse bore (46), which is aligned transversely with respect to the first axis of rotation (22) and is connected in fluidic communication with the second fluid channel (48), which second transverse bore (46) is preferably arranged opposite the second inlet connection (44).
8. Spray device (50, 65) according to claim 6 or 7, characterized in that a rotating gear wheel (25), in particular designed as a bevel gear, is formed on an end face of the sleeve body (5).
9. Spray device according to one of the claims 4 to 8, characterized in that the coupling body (35) has a bearing socket (62) which is aligned coaxially with respect to the second axis of rotation (33) and on which the nozzle carrier (30) is rotatably mounted, the bearing socket (62) having a plurality of annular grooves (63, 64) which are aligned coaxially with respect to the second axis of rotation (33) and are designed to receive sealing means and/or bearing means.
10. Spray device according to one of the preceding claims, characterized in that a first spray nozzle (43) is accommodated in the first nozzle channel (41; 83) of the nozzle carrier (30; 72), and in that a second spray nozzle (56) is accommodated in the second nozzle channel (54; 84) of the nozzle carrier (30; 72), the first spray nozzle (43) having a smaller longitudinal extent and/or a smaller spray opening than the second spray nozzle (56).

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