ROTOR NOZZLE

Abstract

A rotor nozzle includes a carrier element having an axial bore for supplying a pressurized liquid, a nozzle head rotatably mounted thereon and rotatably drivable by a hydraulically generated torque. The nozzle head has at least one laterally emerging removal nozzle in fluid-open communication with the axial bore. The removal nozzle is radially aligned. The nozzle head has at least one laterally emerging, separate drive nozzle extending at a distance from the radial and, depending on the rotational position of the nozzle head, is in communication with the axial bore via a through-bore of the carrier element.

Claims

1. A rotor nozzle, comprising: a carrier element having an axial bore configured to supply of a pressurized liquid; a nozzle head rotatably mounted on the carrier element and configured to be drivable in rotation by a hydraulically generated torque, wherein the nozzle head comprises at least one laterally emerging removal nozzle in fluid-open communication with the axial bore, wherein the removal nozzle is radially aligned, and at least one laterally emerging drive nozzle extending at a distance from a radial, wherein the at least one laterally emerging drive nozzle is separate from the at least one laterally emerging removal nozzle, and wherein, depending on a rotational position of the nozzle head, the at least one laterally emerging drive nozzle is in communication with the axial bore via at least a through-bore of the carrier element.

2. The rotor nozzle of claim 1, wherein the at least one laterally emerging drive nozzle comprises a plurality of drive nozzles distributed over a circumference of the nozzle head, wherein the plurality of drive nozzle are configured to be brought into operative connection with the through-bore via feed bore of the plurality of drive nozzles.

3. The rotor nozzle of claim 1, wherein the through-bore is radially aligned.

4. The rotor nozzle of claim 2, wherein when the plurality of drive nozzles are arranged at a same or different angular distance from each other.

5. The rotor nozzle of claim 1, wherein a feed bore of the at least one laterally emerging drive nozzle extends parallel to the radial.

6. The rotor nozzle of claim 1, wherein the at least one laterally emerging drive nozzle is arranged upstream of the at least one laterally emerging removal nozzle in a direction of flow of the pressurized liquid.

7. The rotor nozzle of claim 1, wherein the at least one laterally emerging removal nozzle opens into a circumferential annular chamber and is in fluid-open communication with the axial bore via a transverse bore.

8. The rotor nozzle of claim 1, wherein the through-bore comprises a plurality of through-bores.

9. The rotor nozzle of claim 1, wherein the through-bore comprises two through-bores, which are arranged opposite each other.

10. The rotor nozzle of claim 1, wherein the at least one laterally emerging drive nozzle is configured to be brought into operative connection with the through-bore at intervals during operation of the rotor nozzle.

Description

BRIEF DESCRIPTION OF THE DRAWING FIGURES

[0024] An exemplary embodiment is described below with reference to the accompanying drawings, wherein:

[0025] FIG. 1 shows a longitudinal section of a rotor nozzle according to the invention;

[0026] FIG. 2 shows a cross-section through the rotor nozzle in the area of the removal nozzles;

[0027] FIG. 3 shows a cross-section through the rotor nozzle in the area of the drive nozzles.

DETAILED DESCRIPTION

[0028] FIG. 1 shows a rotor nozzle having a carrier element 1 and a nozzle head 4, which is rotatably mounted on a support pin 2 of the carrier element 1, wherein a hydraulic drive is provided for the rotary movement.

[0029] For this purpose, the carrier element 1 comprises an axial bore 3, which is designed as a blind bore extending into the support pin 2 and via which a fluid under high pressure can be guided.

[0030] As FIG. 2 in particular shows very clearly, removal nozzles 5 are provided in the nozzle head 4, distributed over the circumference, which are in fluid-open communication with the axial bore 3, by means of which, for example, dirt or the like adhering to the inner wall of a pipe can be removed.

[0031] To ensure a constant flow of liquid that is uniform for all removal nozzles 5, nozzle bores 6 communicate with an annular chamber 10, which in turn is fed via transverse bores 11 in the support pin 2 with the liquid under high pressure which is fed through the axial bore 3.

[0032] For the rotary drive of the nozzle head 4, a row of likewise circumferentially distributed drive nozzles 7 is arranged in the nozzle head 4 in front of the removal nozzles 5 in the direction of flow of the liquid, via which liquid supplied from the axial bore 3 can also be guided and in such a way that the nozzle head 4 rotates relative to the carrier element 1.

[0033] According to the invention, a torque necessary for this purpose is achieved in such a way that, as can be seen particularly clearly in FIG. 3, the drive nozzles 7 are arranged at a distance A from the radial R, wherein the distance A forms a lever arm.

[0034] To apply the torque, the drive nozzles 7 can each be brought into operative connection with at least one through-bore 9 of the support pin 2 via a feed bore 8 in the nozzle head 4 for the passage of liquid, which through-bore 9 is open towards the axial bore 3.

[0035] In the example, when four drive nozzles 7 are arranged at the same angular distance from each other, two through-bores 9 are provided opposite each other, so that each drive nozzle 7 is used twice for each rotation of the nozzle head 4. Incidentally, the drive nozzles 7 are arranged upstream of the removal nozzles, as seen in the direction of flow of the liquid.

[0036] The illustrated arrangement of both the drive nozzles 7 and the through-bores 9 is merely exemplary. Other arrangements are also conceivable, both with regard to the number of drive nozzles 7 and/or through-bores 9 and with regard to the distances A from the radials R.

[0037] Expediently, the feed bores 8 are arranged parallel to an associated radial R. However, it is decisive that the fluid exits from the drive nozzle 7 at a distance A from the radial R.

[0038] Although the invention has been illustrated and described in detail by way of preferred embodiments, the invention is not limited by the examples disclosed, and other variations can be derived from these by the person skilled in the art without leaving the scope of the invention. It is therefore clear that there is a plurality of possible variations. It is also clear that embodiments stated by way of example are only really examples that are not to be seen as limiting the scope, application possibilities or configuration of the invention in any way. In fact, the preceding description and the description of the figures enable the person skilled in the art to implement the exemplary embodiments in concrete manner, wherein, with the knowledge of the disclosed inventive concept, the person skilled in the art is able to undertake various changes, for example, with regard to the functioning or arrangement of individual elements stated in an exemplary embodiment without leaving the scope of the invention, which is defined by the claims and their legal equivalents, such as further explanations in the description.

LIST OF REFERENCE SIGNS

[0039] 1 Carrier element [0040] 2 Support pin [0041] 3 Axial bore [0042] 4 Nozzle head [0043] 5 Removal nozzle [0044] 6 Nozzle bores [0045] 7 Drive nozzle [0046] 8 Feed bore [0047] 9 Through-bore [0048] 10 Annular chamber [0049] 11 Transverse bore [0050] A Distance [0051] R Radial