Cleaning device for a combustion boiler

Abstract

A cleaning device for a combustion boiler, comprising a high-temperature-resistant cleaning hose for feeding a cleaning medium into the combustion boiler, a hose reel which can be rotated about a first axis of rotation, wherein the cleaning hose can be wound at least partially in said reel, and wherein the hose reel comprises an opening through which the cleaning hose can be guided during winding or unwinding parallel to the first axis of rotation.

Claims

1. A cleaning device for a combustion boiler, comprising: a high-temperature-resistant cleaning hose for feeding a cleaning medium into the combustion boiler, a hose reel, which is rotatable about a first axis of rotation and in which a hose chamber is arranged, wherein the cleaning hose can be wound at least in part in the hose chamber on an inner circumferential face of the hose reel, wherein the hose reel comprises an opening, through which the cleaning hose can be guided during winding or unwinding parallel to the first axis of rotation, and at least one hose guide wheel, which is arranged at least in part in the hose chamber of the hose reel and guides the cleaning hose to the inner circumferential face of the hose reel, wherein the at least one hose guide wheel can be driven by a motor, wherein the cleaning hose is wound around the hose guide wheel for a length that comprises an angle of at least 90 of an outer circumference of the hose guide wheel, wherein the position of the hose guide wheel can be adjusted parallel to the first axis of rotation of the hose reel, wherein the hose guide wheel is movable parallel to the first axis of rotation of the hose reel relative to the hose reel and wherein the hose guide wheel is mounted rotatably within the hose reel eccentrically about the first axis of rotation.

2. The cleaning device as claimed in claim 1, wherein the hose reel with the cleaning hose is exchangeable.

3. The cleaning device as claimed in claim 1, comprising a drive for moving the cleaning hose along the first axis of rotation.

4. The cleaning device as claimed in claim 1, comprising at least one cleaning unit for the cleaning hose or at least one monitoring unit for determining a position of the cleaning hose.

5. The cleaning device as claimed in claim 1, wherein the cleaning hose comprises three bends between the opening and an inner circumferential face of the hose reel.

6. A combustion boiler, comprising: a cleaning device; and at least one feedthrough for a cleaning hose of the cleaning device; wherein the cleaning device includes: a high-temperature-resistant cleaning hose for feeding a cleaning medium into the combustion boiler, a hose reel, which is rotatable about a first axis of rotation and in which a hose chamber is arranged, wherein the cleaning hose can be wound at least in part in the hose chamber on an inner circumferential face of the hose reel, wherein the hose reel comprises an opening, through which the cleaning hose can be guided during winding or unwinding parallel to the first axis of rotation, and at least one hose guide wheel, which is arranged at least in part in the hose chamber of the hose reel and guides the cleaning hose to the inner circumferential face of the hose reel, wherein the at least one hose guide wheel can be driven by a motor, wherein the cleaning hose is wound around the hose guide wheel for a length that comprises an angle of at least 90 of an outer circumference of the hose guide wheel, wherein the position of the hose guide wheel can be adjusted parallel to the first axis of rotation of the hose reel, wherein the hose guide wheel is movable parallel to the first axis of rotation of the hose reel relative to the hose reel and wherein the hose guide wheel is mounted rotatably within the hose reel eccentrically about the first axis of rotation.

7. The cleaning device as claimed in claim 1, wherein the first axis of rotation is oriented vertical.

8. The cleaning device as claimed in claim 1, wherein a winding device of the hose reel is arranged horizontally.

9. The cleaning device as claimed in claim 1, wherein an outer circumference of the at least one hose guide is formed from wood.

10. The cleaning device as claimed in claim 1, wherein the hose guide wheel can be driven by the motor about an axis of rotation, which is located in a center of the hose guide wheel.

11. The cleaning device as claimed in claim 1, wherein a connection between the motor and the hose guide wheel includes at least one joint.

12. The cleaning device as claimed in claim 1, wherein guide rollers are arranged within the hose chamber in order to increase a contact pressure between the cleaning hose and the outer circumference of the hose guide wheel.

13. The cleaning device as claimed in claim 1, wherein the hose guide wheel is fastened vertically adjustably on a support.

14. The cleaning device as claimed in claim 1, wherein the at least one hose guide wheel and the hose reel are constructed and arranged to rotate simultaneously to selectively wind and unwind the cleaning hose.

15. The cleaning device as claimed in claim 1, further comprising: another motor coupled to the hose reel, the other motor being constructed and arranged to drive the hose reel about the first axis to provide rotation, relative to surfaces within the combustion boiler, to the cleaning hose and to a nozzle head coupled to an end of the cleaning hose.

16. A cleaning device for a combustion boiler, comprising: a high-temperature-resistant cleaning hose for feeding a cleaning medium into the combustion boiler, a hose reel that defines an inward facing hose bearing surface and an internal hose chamber, wherein the hose reel is constructed and arranged to rotate about a first axis of rotation while at least a portion of the cleaning hose bears against the inward facing hose bearing surface defined by the hose reel, a hose guide wheel, which is arranged at least in part within the hose chamber defined by the hose reel and which guides the cleaning hose toward the inward facing hose bearing surface defined by the hose reel, wherein the hose guide wheel is driven by a motor, wherein the cleaning hose winds around the hose guide wheel for a length that comprises an angle of at least 90 of an outer circumference of the hose guide wheel, wherein the position of the hose guide wheel is adjusted parallel to the first axis of rotation of the hose reel, wherein the hose guide wheel is movable parallel to the first axis of rotation of the hose reel relative to the hose reel, wherein the hose guide wheel is mounted rotatably within the hose reel eccentrically about the first axis of rotation, wherein the cleaning hose is directed at least in part within the hose chamber against the inward facing hose bearing surface defined by the hose reel by the hose guide wheel, and wherein the hose reel further defines an opening, through which the cleaning hose is guided during winding or unwinding parallel to the first axis of rotation.

Description

(1) The invention and the technical scope will be explained in greater detail hereinafter with reference to the figures. It is noted that the figures show particularly preferred variants of the invention, but are not limited thereto. In the drawings:

(2) FIG. 1: shows a schematic view of a combustion boiler with a cleaning device according to the invention,

(3) FIG. 2: shows a schematic view of a longitudinal section through the cleaning device according to the invention,

(4) FIG. 3: shows a schematic view of a further embodiment of a cleaning device according to the invention with an unwound cleaning hose, and

(5) FIG. 4: shows a schematic view of a further embodiment of a cleaning device according to the invention with a wound cleaning hose.

(6) FIG. 1 shows a combustion boiler 2 with a cleaning device 1. The cleaning device 1 is fastened on the combustion boiler 2 via a stand 16 at a wall 25 of the combustion boiler. The cleaning device 1 comprises a hose reel 5, which is mounted rotatably about a first axis of rotation 4 and in which a cleaning hose 3 can be wound at least in part. In the present example embodiment, the cleaning hose 3 is guided into the combustion boiler 2 via one of the feedthroughs 12 of the combustion boiler 2, such that a cleaning medium 9 can be sprayed via a nozzle head 15 of the cleaning hose 3 in the direction of surfaces to be cleaned of the combustion boiler 2. In order to pass the cleaning hose 3 down into the combustion boiler 2, the cleaning device 1 comprises a drive 11 for the cleaning hose 3. In addition, a monitoring unit 14 is arranged in the region of the feedthrough 12 in order to monitor the position of the cleaning hose 3 and therefore of the nozzle head 15 within the combustion boiler 2.

(7) FIG. 2 shows a longitudinal section through a cleaning device 1 comprising a hose reel 5, in which a hose chamber 24 for the cleaning hose 3 is formed. In this example embodiment, the hose chamber 24 has a conical inner cross section 10. The hose reel 5 can additionally be driven via a first axis of rotation 4 with the aid of a first motor 17. The hose reel 5 further comprises an opening 6, via which the hose chamber 24 is connected to the surrounding environment. A hose guide 7, which is rotatable about a second axis of rotation 8, which runs coaxially with the first axis of rotation 4, extends through the opening 6. The hose guide 7 is additionally mounted rotatably in the opening 6 and can be driven by a second motor 18 independently of the hose reel 5. In the present embodiment, the cleaning hose 3 can be guided into or out from the hose chamber 24 by means of the hose guide 7, when this is driven at an angular velocity deviating from the hose reel, and/or by means of the drive 11. The cleaning device 1 additionally comprises a cleaning unit 13, which is formed here as a pneumatic blow-off nozzle. In particular, adhesions of ash, soot or slag from the combustion boiler 2 (not shown here; see FIG. 1) can be cleaned off by means of this cleaning unit 13 before the cleaning hose 3 is drawn into the hose chamber 24. To this end, the cleaning unit 13 is arranged in particular beneath the drive 11. The cleaning hose 3 is additionally connected via a rotational coupling 20 and a feed point 22 to a store 21 for a cleaning medium 9 (not shown here). In addition, the feed point 22 is coupled to a pump 23, such that the cleaning medium 9 (not shown here) can be conveyed from the store 21 to the nozzle head 15 (likewise not shown here) at the opposite end of the cleaning hose 3. In addition, the drive 11 for the cleaning hose 3, the first motor 17 for the hose reel 5, the second motor 18 for the hose guide 7, and the pump 23 are connected to a control unit 19 in a data-conducting manner. The control unit 19 is designed to apply the cleaning medium 9 (not shown here) to dirty surfaces of the combustion boiler 2 as necessary and/or to drive the nozzle head (not shown here), including the cleaning hose 3, in rotation.

(8) FIG. 3 shows a further example embodiment of a cleaning device 1 according to the invention comprising a hose guide wheel 26, wherein features of the previous example embodiment can be combined in a technically feasible manner with the example embodiment according to FIG. 3 and vice versa. The hose guide wheel 26 comprises an outer circumference 28, on which the cleaning hose 3 can be guided into and out from the hose chamber 24 through the opening 6, wherein the cleaning hose 3 is wound inside the hose chamber 24, in particular in a spiraled manner, at an inner circumferential face 27 of the hose reel 5. To this end, the hose guide wheel 26 can be driven by a third motor 29 about a third axis of rotation 30 in a first direction of rotation 31 or against the first direction of rotation 31, wherein the third axis of rotation 30 is inclined with respect to the first axis of rotation 4 by an angle. The connection between the third motor 29 and the hose guide wheel 26 may also comprise in particular at least one joint and/or at least one gear. If the hose guide wheel 26 is driven in the first direction of rotation 31, the cleaning hose 3 is guided out from the hose chamber 24 through the opening 6. The hose guide wheel 26 thus additionally rotates about the first axis of rotation 4 in a second direction 32 or against the second direction of rotation 32 when the cleaning hose 3 is guided in. It can also be seen that the cleaning hose 3 is guided via three bends 35.1, 35.2, 35.3 between the opening 6 and the inner circumferential face of the hose reel 5. To this end, additional guide rollers 33 may be arranged within the hose chamber 24, in particular so as to also increase a contact pressure between the cleaning hose 3 and the outer circumference of the hose guide wheel 26. The hose reel 5 can additionally be driven about the first axis of rotation 4 with the aid of the first motor 17. Such a rotation (indicated by the outer large arrow; optionally also in the opposite direction) can be used to rotate the cleaning hose 3 and therefore also the nozzle head 15, even if there is no unwinding of the cleaning hose 3, that is to say the nozzle head 15 resides at a height in the combustion boiler 2 (or in a downstream region).

(9) FIG. 4 shows the mounting of the hose guide wheel 26 of a cleaning device 1 in accordance with the example embodiment shown in FIG. 3. In FIG. 4, the cleaning hose 3 is wound substantially completely in the hose reel 5. Due to the spiraled winding of the cleaning hose 3, there is an adjustment of the position of the hose guide wheel 26 along the first axis of rotation 4. To this end, the hose guide wheel 26 is fastened (vertically) adjustably on a support 34. In the lower region of FIG. 4, the hose guide wheel 26 (dashed) including joint and gear is shown in a vertically adjusted (lower) position, in which the cleaning hose 3 is substantially unwound. The support 34 is in turn pivotable with the hose guide wheel 26 about the first axis of rotation 4 and is accordingly mounted in the upper region on the hose reel 5 and/or outside the hose reel 5.

(10) The present invention is characterized by a particularly simple and cost-effective rotary drive of the nozzle head of the cleaning device.

LIST OF REFERENCE SIGNS

(11) 1 cleaning device 2 combustion boiler 3 cleaning hose 4 first axis of rotation 5 hose reel 6 opening 7 hose guide 8 second axis of rotation 9 cleaning medium 10 inner cross section 11 drive 12 feedthrough 13 cleaning unit 14 monitoring unit 15 nozzle head 16 frame 17 first motor 18 second motor 19 control unit 20 rotary coupling 21 store 22 feed 23 pump 24 hose chamber 25 wall 26 hose guide wheel 27 inner circumferential face 28 outer circumference 29 third motor 30 third axis of rotation 31 first direction of rotation 32 second direction of rotation 33 guide roller 34 support 35.1, 35.2, 35.3 bend