DESCALING DEVICE

Abstract

A descaling device having a device housing, a shaft, a shaft bearing, a nozzle head and a medium coupling, wherein the shaft bearing is arranged in the device housing and the shaft is mounted in the device housing by the shaft bearing for carrying out a rotary movement, wherein the shaft and the nozzle head are detachably connected to one another in a non-destructive manner, wherein the medium coupling has a medium connection for supply of a medium, wherein the shaft has a shaft cavity for conducting the medium supplied at the medium connection to the nozzle head. The descaling device has an improved maintainability and reliability due to the descaling device having a motor, and due to the motor being arranged on the shaft in the device housing between the nozzle head and the medium coupling in order to generate the rotary movement of the shaft.

Claims

1. A descaling device, comprising: a device housing, a shaft, a shaft bearing, a motor, a nozzle head and a medium coupling, wherein the shaft bearing is arranged in the device housing and the shaft is mounted in the device housing by the shaft bearing for carrying out a rotary movement, wherein the shaft and the nozzle head are detachably connected to one another in a non-destructive manner, wherein the medium coupling has a medium connection for supplying a medium, wherein the shaft has a shaft cavity for conducting the medium supplied at the medium connection to the nozzle head, wherein the motor is arranged on the shaft in the device housing between the nozzle head and the medium coupling in order to generate rotary movement of the shaft.

2. The descaling device according to claim 1, wherein the device housing hermetically encloses the motor.

3. The descaling device according to claim 1, wherein the motor is an electric motor.

4. The descaling device according to claim 1, wherein the shaft has a first partial shaft and a second partial shaft, the first partial shaft and the second partial shaft being detachably connected to one another in a non-destructive manner, wherein the first partial shaft is connected to the nozzle head, wherein the shaft bearing is arranged exclusively on the first partial shaft, and wherein the medium coupling is arranged on the second partial shaft.

5. The descaling device according to claim 4, wherein the first partial shaft and the second partial shaft each have a blind hole with an open end and a closed end, and wherein the blind hole of the first partial shaft and the blind hole of the second partial shaft together form the shaft cavity.

6. The descaling device according to claim 1, wherein the medium coupling has a coupling housing, a cover and a sealing device, wherein the coupling housing has a coupling cavity, wherein the cover is detachably connected to the coupling housing in a non-destructive manner and seals the coupling cavity, wherein the sealing device is located in the coupling cavity between the shaft and the medium connection for sealing, and wherein the medium coupling and the shaft are configured to enable the sealing device to be removed and inserted with the cover removed.

7. The descaling device according to claim 6, wherein the coupling housing is separate from the device housing and wherein the coupling housing and the device housing are detachably connected to one another in a non-destructive manner.

8. The descaling device according to claim 4, wherein the coupling housing is separate from the device housing and wherein the coupling housing and the device housing are detachably connected to one another in a non-destructive manner, wherein the coupling housing is designed and arranged on the device housing in such a manner that, when the coupling housing is demounted, the second partial shaft can be demounted from the first partial shaft and mounted on the first partial shaft.

9. The descaling device according to claim 1, wherein cooling channels are formed in the device housing, and wherein the device housing is able to transfer heat from the motor produced during operation and/or radiant heat from a workpiece to a medium present in the cooling channels.

10. The descaling device according to claim 1, wherein the motor is configured for transferring heat generated by the motor during operation to a medium present in the shaft cavity.

11. The descaling device according to claim 1, wherein the nozzle head has a nozzle head carrier and a nozzle carrier, wherein at least one nozzle for expelling a medium is arranged in the nozzle carrier, wherein at least one channel is formed in the nozzle head carrier for conducting the medium from the shaft cavity to the at least one nozzle, wherein the nozzle carrier and the nozzle head carrier are detachably connected to one another in a non-destructive manner, and wherein the nozzle head carrier and the shaft are connected to one another.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0023] FIG. 1 is a perspective view of an embodiment of a descaling device in accordance with the invention,

[0024] FIG. 2 is a second perspective view of the embodiment shown in FIG. 1, and

[0025] FIG. 3 is a longitudinal cross-sectional view of the embodiment shown in FIG. 1.

DETAILED DESCRIPTION OF THE INVENTION

[0026] In a first perspective illustration, FIG. 1 shows an embodiment of a descaling device 1. FIG. 2 shows the embodiment in a second perspective illustration and FIG. 3 shows a longitudinal cross-section of the embodiment.

[0027] The descaling device 1 has a device housing 2, a shaft 3, a shaft bearing 4, a nozzle head 5 and a medium coupling 6.

[0028] The device housing 2 comprises a housing middle segment 7, a first housing end segment 8 and a second housing end segment 9. The housing middle segment 7 is hollow cylindrical and the first housing end segment 8 and the second housing end segment 9 are plate-shaped. The housing middle segment 7 is connected to each of the first housing end segment 8 on the one hand and to the second housing end segment 9 on the other hand by four screw connections 10. Each screw connection 10 comprises one screw and one thread. Thus, the screw connections 10 are detachable in a non-destructive manner and can also be reconnected. The total of eight threads are formed in the housing middle segment 7. The housing middle segment 7, the first housing end segment 8 and the second housing end segment 9 together form a housing interior 11.

[0029] The shaft bearing 4 is arranged in the device housing 2 and the shaft 3 is mounted in the device housing 2 by the shaft bearing 4 for a rotary movement 12. The shaft bearing 4 comprises a first bearing 13 which is arranged in the first housing end segment 8 and a second bearing 14 which is arranged in the second housing end segment 9.

[0030] The shaft 3 is formed of a first partial shaft 15 and a second partial shaft 16. The first partial shaft 15 and the second partial shaft 16 are detachably connected to one another in a non-destructive manner. The connection between the first partial shaft 15 and the second partial shaft 16, which can be detached in a non-destructive manner and also reconnected, is implemented by a first partial shaft thread 17 in the first partial shaft 15 along a longitudinal axis of the first partial shaft 15 and a second partial shaft thread 18 complementary to the first partial shaft thread 17 in the second partial shaft 16 along a longitudinal axis of the second partial shaft 16. For sealing between the first partial shaft 15 and the second partial shaft 16, a partial shaft seal 19 is arranged between the first partial shaft 15 and the second partial shaft 16. The partial shaft seal 19 comprises two annular seals. The shaft 3 is connected to the nozzle head 5 in a non-destructive, detachable manner by the first partial shaft 15. Furthermore, the shaft bearing 4 is arranged exclusively on the first partial shaft 15 and the medium coupling 6 is arranged exclusively on the second partial shaft 16. The medium coupling 6 has a medium connection 20 for the supply of a medium 21.

[0031] The shaft 3 has a shaft cavity 22 for conducting the medium 21 supplied at the medium connection 20 to the nozzle head 5. The first partial shaft 15 and the second partial shaft 16 each have a blind hole 23 with one open end and one closed end. The blind hole 23 of the first partial shaft 15 and the blind hole 23 of the second partial shaft 16 together form the shaft cavity 22.

[0032] The nozzle head 5 has a nozzle head carrier 24 and a nozzle carrier 25. Eight nozzles 26 for expelling the medium 21 are arranged in the nozzle carrier 25. The jet pattern of the expelled medium 21 is fan-shaped. Eight channels 27 are designed in the nozzle head carrier 24 to direct the medium 21 from the shaft cavity 22 to the eight nozzles 26. The nozzle carrier 25 and the nozzle head carrier 24 are detachably connected to one another in a non-destructive manner. The connection is made by eight screw connections 10, wherein the corresponding threads are formed in the nozzle head carrier 24. The nozzle head carrier 24 and the shaft 3, in the form of the first partial shaft 15, are also detachably connected in a non-destructive manner. Here the connection is made by a screw connection 10, wherein the corresponding thread is formed in the first partial shaft 15.

[0033] The medium coupling 6 has a coupling housing 28, a cover 29 and a sealing device 30. The coupling housing 28 also has a coupling cavity 31, which is sealed by the cover 29, which is detachably connected to the coupling housing 28 in a non-destructive manner. The cover 29 is connected to the coupling housing 28 by four screw connections, wherein the corresponding threads are formed in the coupling housing 28. The sealing device 30 is inserted into the coupling cavity 31 for sealing between the shaft 3, in the form of the second partial shaft 16, and the medium connection 20. The medium coupling 6 and the shaft 3, in the form of the second partial shaft 16, are designed in such a manner that the sealing device 30 can be removed and inserted when the cover 29 is demounted. The design of the medium coupling 6 and the second partial shaft 16 is such that both the coupling cavity 31 and the second partial shaft 16 each have the shape of a vertical circular cylinder and the sealing device 30 is limited by the outer shape of a hollow cylinder that is adapted to the coupling cavity 31 and to the second partial shaft 16 in the coupling cavity 31. The sealing device 30 is formed of several sealing elements.

[0034] The coupling housing 28 is separate from the device housing 2, wherein the coupling housing 28 and the device housing 2 are detachably connected in a non-destructive manner. The connection is made by four screw connections, wherein the corresponding threads are formed in the second housing end segment 9. The coupling housing 28 is designed and arranged on the device housing 2 in such a manner that, when the coupling housing 28 is demounted, the second partial shaft 16 can be demounted from the first partial shaft 15 and mounted on the first partial shaft 15.

[0035] The descaling device 1 has a motor 32 designed as an electric motor. During operation of the descaling device 1, the motor 32 generates the rotary movement of the shaft 3 and, for this, is arranged on the shaft 3 in the housing interior 11 of the device housing 2 between the nozzle head 5 and the medium coupling 6. In particular, the motor 32 is also arranged between the first bearing 13 and the second bearing 14. The device housing 2 hermetically encloses the motor 32. The motor 32 has a rotor 33 and a stator 34. The rotor 33 is arranged on the shaft 3 in the form of the first partial shaft 15 and the stator 34 is arranged in the housing interior 11 on the device housing 2. The motor 32, which is designed as an electric motor, is an asynchronous motor with six pole pairs.

[0036] Cooling channels 35 are formed in the device housing 2 and the device housing 2 is also designed to transfer heat generated during operation from the motor 32 and radiant heat from a hot workpiece arranged in front of the nozzle head 5 to a medium present in the cooling channels 35. For this reason, cooling channels 35, in particular, are formed in the part of the device housing 2, namely the first housing end segment 8, which is next to the hot workpiece. The medium present in the cooling channels, for example, is a medium 21 used for descaling.