EP1473515B1 - Compact water lance blower of modular construction - Google Patents

Abstract

The water lance blower (18) is connected to the water supply pipe, with its opening (31) at or in a hatch (32) of a heating installation to deliver a water jet into the burner zone of the heating installation, to clean the walls which can be reached through the hatch. The lance drive system has a drive unit (2) to control the water lance (18), and a holder (1) to mount it at the heating installation. Sections (15-17,44) of the water supply system are integrated into the holder (1). A flexible hose (21) connects the lance to the water supply pipe system. The dimensions of the water lance assembly are defined by the swing movement range of the lance. The holder (1) has a connection (23) for a remote control and/or remote diagnosis.

Description

The invention relates to a water lance blower with a water lance, which is pivotally mounted with its mouth on or in a hatch, with a drive system having at least two drive units for controlling the water lance, and with a holding device for fastening the water lance blower on a wall. Such water lance blower are used in particular for the purification of thermal systems, the water lance can blow a stream of water through the in-service and flowed with flames and / or flue gases heat plant on accessible from the hatch wall areas.

Water lances of this type are described, for example, in WO 96/38701, WO 96/38702, WO 96/38703 and WO 96/38704. The water lancers give a bundled stream of water through the firebox to the opposite wall. As a result of the kinetic water jet energy and the sudden evaporation of water penetrated into pores of the deposits, a spalling of the soot, slag and ash is effected.

The impact area of the jet of water generated by the water lance blower generally follows a certain predeterminable path on the surface to be cleaned, also known as a blower, this way generally meandering and optionally avoiding obstacles, openings or other sensitive zones.

In addition to a control of the drive system by a template, which necessarily produces a very specific blowing character, were mainly two-axis controls used with control axes arranged at right angles to one another, in particular a horizontal and a vertical axis, in order to be able to easily generate meander-shaped blowing figures. Consequently, drive systems of known water lance blowers have a horizontally oriented and a vertically oriented drive unit. At least one of the two drive units is attached with appropriate devices directly to the heat system. The second drive unit of known drive systems has devices, by means of which this second drive unit can be fastened on the first drive unit in order to realize a two-axis control. In most cases, the second drive unit is arranged such that it is additionally guided, for example, to the heat installation or parts of the drive system. Such a drive system is described for example in WO 93/12398.

Due to the different requirements according to the desired attachment or guidance, the drive units of individual, known drive systems are always designed differently. A drive unit is usually attached to a part of a framework. This drive unit moves during operation both the other drive unit and a water lance and is made particularly robust for stability and rigidity reasons. In contrast, the second drive unit, which is articulated in particular on the water lance, adapted to the structural design of the first drive unit. Specially designed holding and fastening devices are therefore required.

The individual components (such as the drive system, the water supply, the control cabinet) known Wasserlanzenbläser are further arranged around a centrally positioned water lance that they are located in areas outside the pivoting range of the water lance, so as not to limit the pivoting range. In addition, the water lance is connected to a water supply line, which must follow the movements of the water lance and this may not restrict at the same time. Such a water supply known water lance blower is therefore out of the swivel range immediately after leaving the water lance out. For these reasons, known water lance blowers have a much larger footprint than the actual movement of the water lance requires. This is particularly problematic when the location of a water lance blower is limited by a variety of structural requirements of the thermal system, such as pipes, supports, fittings, etc. It is thus conceivable that the positioning of known water lance blower at a desired location of the thermal system can not take place because there is not enough space for the entire water lance blower, although the required pivoting range of the water lance would be guaranteed.

The different embodiments of Wasserlanzenbläser require a high level of logistical effort in production, distribution and service. Production includes a variety of manufacturing processes that depend on the embodiment of various drive units. For this purpose a variety of machines and tools and specially trained personnel are needed.

The object of the present invention is to provide a water lance blower of the type mentioned, the footprint substantially equal to the area below the maximum pivoting range of the water lance, which is easy to assemble and maintain and which reduces the above-mentioned logistical requirements for a company the water lance along predeterminable blow figures with different speeds is controllable.

The object is achieved by a water lance blower according to claim 1. Further advantageous embodiments are described in the dependent claims.

The water lance blower according to the invention has a water lance, which is arranged pivotably on the one hand with its mouth on or in a hatch and on the other hand connected to a water supply system. The water lance can blow a jet of water through the heat exchanger, which is in operation and is supplied with flames and / or flue gases, to wall areas which can be reached from the hatch. The water lance is controlled by a drive system with two drive units and thus allows the generation of any blowing patterns through the water lance. The drive system of the water lance blower has two drive units, which are characterized in that they are designed as modules. This means that the drive units form functional units for themselves and as such are completely interchangeable. Such trained identical drive units in a drive system are therefore interchangeable with each other. This has the advantage that, for example, during a repair, the drive unit can be easily removed and replaced by a new drive unit. A modular embodiment of the drive units additionally reduces the logistical expenses of a company, which now only has to manufacture, store or logistically manage a reduced number of variants of the drive units. This significantly reduces the manufacturing and service costs of the company.

Furthermore, such a construction of the drive system supports a compact and simple arrangement of the water lance blower. The attachment of the holding device to a thermal system can thus be made in the desired position. Starting from this position, the drive units can be arranged arbitrarily, so that, optionally, with regard to components of the thermal system, the drive units are combined in such a way that a desired pivoting range of the water lance is realized.

The first and second drive units are arranged perpendicular to each other and connected to each other, wherein the first is connected to the holding device and the second drive unit is moved through the first. The second drive unit directs the water lance so that its end area can cover a maximum projection area during operation. This results in an arrangement of the drive units, which is in the edge positions of the travel of the first drive unit L-shaped and in a central position of the travel path T-shaped. The orientation of the L- or T-shaped arrangement is irrelevant. A frame is not needed for such an arrangement. Advantageously and particularly preferred is the arrangement of the integrated parts of the water supply system in the region of a corner of the projection surface of the water lance.

According to a further embodiment, the second drive unit of the drive system is designed with a connecting element which protrudes laterally with one end from the second drive unit. With this end of the connecting element, the water lance is articulated. The connecting element is to be designed so that the freedom of movement of the water lance is not limited. In this case, the connecting element is arranged such that the projecting end is aligned with the side of the drive system of the water lance blower, which faces the holding device, in particular with integrated parts of the water supply system.

This orientation of the connecting element results in a very compact and space-saving water lance blower, since in this way the drive units and the holding device are arranged essentially on a surface which can be swung over by the rear end region of the water lance. The connecting element is moved by the two drive units in one plane and thus allows the movement of the water lance. Due to the different positions of the water lance, the articulation point of the connecting element varies. Does the water lance strongly (for example both drive units are near an edge position), the point of articulation moves in the outer area of the water lance towards the flexible conduit. In an upright position the articulation point is closer to the mouth of the water lance. Furthermore, certain devices for fastening the flexible conduit must be provided at the outer end, which do not restrict the freedom of movement of the water lance. For these reasons, the water lance is not hinged at its outer end to the connecting element, but extends further beyond the pivot point. This outermost end of the water lance sweeps during operation of the water lance blower, a maximum area on which are arranged in accordance aligned connector both the drive units and the holding device with integrated parts of the water pipe system.

According to a further embodiment, the modular drive units each have at least one motor, a spindle and a spindle nut. The motor is connected to the spindle and thus rotates during operation, the spindle, whereby the mounted on the spindle spindle nut is moved translationally. Such drive units are particularly suitable for exact path control. In addition, they are characterized by their simple structure.

According to a development, the water lance blower on a guide system with sliding shoes and rails. The spindle nut is connected to the sliding shoes. The shoes are guided by two parallel rails. The rails are attached directly to the drive unit and aligned so that they are parallel to the spindle. In this way, the bending and torsional rigidity of the drive unit is increased.

It is particularly advantageous to design the motors of the drive units as EC motors (electronic communication). EC motors can work accordingly Their purpose can be optimized and thus enable reliable path control of the spindle nut. Furthermore, these engines are characterized by a low heat generation, high speeds and the possibility of detecting the speed for determining the distances covered by a connected via a spindle spindle nut. It is particularly advantageous if, in addition to the travel control of the water lance by the motors of the drive units, the water lance is designed with a motion sensor which reports disturbances in the motion transmission.

According to a further development, the sliding shoes are connected to a fastening unit. The fastening unit is connected either to the number of sliding shoes, which are moved translationally on a rail, or it is connected to the total number of sliding shoes. If the fastening unit is connected to all sliding shoes, this represents a kind of platform covering an area between the rails and fixing the spindle nut. A fastening unit designed in this way significantly increases the torsional rigidity of the drive unit.

The fastening unit has according to a further embodiment positioning aids for the exact alignment of attachable to the fastening unit structures. The fastening unit is a kind of interface to the structures which are moved by the drive unit. Such structures are, for example, a further drive unit, the connecting element for fixing the water lance or components which form part of a guide on the thermal system. The exact path control of the water lance along predetermined blow patterns with arbitrary speeds requires an exact alignment of these structures on the drive unit. With such positioning aids assembly errors are avoided.

It is particularly advantageous to carry out the positioning aids as pins, grooves or bores. These positioning aids can also be attached to a mounting unit be executed in any combination. The positioning help with appropriate design of the structures to be fastened a kind of positive engagement and thus support the fixation of the structures in a predetermined position.

According to a development, a second drive unit can be fixed to the attachment unit of a first drive unit. This means that the second drive unit is designed in such a way that it can be fastened to the fastening unit, for example by ensuring an interaction of the positioning aid and the second drive unit. Thus, two modular drive units are easily mountable to a two-axis control for a water lance blower.

According to a further embodiment, the drive unit has a cage-like profile rail and a cover. The cage-like profile rail and the cover at least partially enclosing dirt-sensitive components of the drive unit. Particularly sensitive to dirt are, for example, the motor, the spindle, the spindle nut, and the parts of a translational guide system with sliding shoes and rails. Due to the installation site, the drive system for a water lance blower is exposed to a great variety of environmental conditions. The high proportion of soot or ash in the ambient air and optionally leakage or spray water are kept away from the spindle and guide system in this way.

On the cage-like rail, the rails of the guide system are attached. The side walls of the rail at least partially enclose the rails and the slide shoes guided thereon. The cover is disposed above the spindle and extends substantially between the side walls of the rail. The arrangement of profile rail and Cover is preferably such that the internal and dirt-sensitive components are almost completely enclosed.

It is particularly advantageous to arrange the fastening unit outside the cage-like profile rail. A connection of the fastening unit with the sliding shoes in the interior of the rail is designed so that internal areas of the rail are sealed against contamination. The spindle and the guide system are thus protected, and the attachment unit also offers an external connection option.

The described arrangement of rail and cover has the formation of at least one gap result. This gap is necessary to transfer the movement of the spindle nut to external structures, in particular the water lance of the water lance blower. According to a further embodiment, the drive system has at least one bellows, which is arranged so that it at least partially seals at least one gap between the rail and cover. It is particularly advantageous to connect the bellows on the one end to the cage-like profile rail on the one hand and to the fastening unit on the other hand. The bellows is in particular additionally guided on the rail and thus covers the at least one gap between rail and cover.

According to another embodiment, the bellows is not connected to the movable fastening unit, but serves to protect during the downtime of the water lance blower. This means that at the beginning of a cleaning cycle of the water lance blower, the bellows is moved to a position in which it only extends over edge regions of the gap and is stretched again after the cleaning cycle has ended and thus covers the at least one gap up to the fastening unit. This embodiment is particularly well suited in conjunction with additional sealing means at the gap, which during operation of the Water lance blower prevent the ingress of contaminants into internal areas of the drive unit.

In accordance with a further embodiment of the water lance blower, at least one sliding shoe is connected in each case to a rail with a small boat. In this case, the fastening unit can be fastened both between the sliding shoe and the shuttle and on the side of the shuttle which faces away from the sliding shoes. If the at least one shuttle serves as an interface with other structures, this is preferably equipped with positioning aids. Under a boat is an elongated structure to understand, which tapers at its narrow ends so that a wedge shape is formed. The boat is arranged in a gap between the rail and cover and thus protrudes beyond the cover.

Areas between fixed parts of the drive units, such as the rail or the cover, and the movable parts (attachment unit or boat) are executed according to a development of the drive system with sealing means. Because of the accelerations and speeds occurring during operation of the water lance blower, the sealing devices are made robust. Furthermore, the sealing means are adapted to the external environment, in this context, in particular the temperature insensitivity of the sealing device is in the foreground, since the drive system is usually attached directly to the heat system.

The rail and the cover according to another embodiment, rubber lips, which extend over the gaps and rest against the boat. Preferably, the rubber lips are designed so that the rubber lips of the rail and the cover of a gap at least partially touch each other. In a translational movement of the spindle nut, the shuttle is between the rubber lips of a gap moves, with the wedge shape of the shuttle opens the rubber lips. Such executed rubber lips seal the gaps between the cage-like rail and the cover and thus protect internal areas.

Another particularly advantageous embodiment of the water lance blower has two bands for sealing the gap of the drive unit. The bands are connected to the rail and to the cover and extend over the gap to be sealed. Between these bands, the movable structure is guided. It is particularly advantageous to use an outwardly directed band of metal an inwardly directed rubber band. The bands lie on each other in areas remote from the movable structure and open near the position of the movable structure. For example, the metal band provides good protection against ashes, etc., while the flexible and elastic rubber band adapts particularly well to the moving structure.

According to yet another embodiment, air with overpressure can be introduced into the rail. The air escapes essentially through the gaps between the rail and the cover. Due to the air flow from inside sections of the rail to the outside, the ingress of dirt and soot from the environment of the drive system is prevented.

According to a development of the water lance blower, the holding device is characterized by integrated control elements for at least one drive unit or for the formation and monitoring of a water jet. These controls affect, for example, the speed of the motor or regulate the water flow blown out by the water lance.

It is particularly advantageous to equip the holding device with control displays and / or operating elements with which, if appropriate, the control elements can be influenced. In this way, the water lance blower can be controlled and controlled on site by an operator become. The integration of the controls as well as the control displays and controls results in a very compact embodiment of a propulsion system for a water cannon.

According to a further development, the holding device has connections for a remote control and / or remote diagnosis. This means that, for example, the control elements via a bus system with a remote diagnostic station is designed to be connected and thus a remote monitoring of the operation of the water lance blower is possible.

The fixation and water supply will be described below by way of example. Thus, the water lance blower on a holding device which serves to attach the water lance blower to a wall of the heat system. This holding device has advantageously integrated into it parts of the water supply system.

By integrating parts of the water supply into areas of the water lance blower, which are arranged close to the water lance, the water lance blower is made very compact. The holding device also provides a kind of adapter between a mostly rigid running water supply and a flexible, flexible forwarding of the water to the water lance out. The forwarding is moved only in a relatively small section, whereby lower forces to move the water lance are needed and the space, in which parts of the water lance blower move, is significantly reduced. It is precisely this reduction of the movement space has the consequence that in the positioning of the water lance blower according to the invention a complex adaptation of the water supply system to the structural conditions of the thermal system is no longer required.

Accordingly, it is particularly advantageous if the holding device has at least one connecting device for a separate water supply line having. In particular, the use of standardized connection devices is advantageous, whereby the water supply lines can be made rigid, for example as a conduit. Furthermore, the holding device has at least one connection element for a flexible conduit for passing water to the water lance. The design of the connection element can be configured flexibly and depends on the type of water transmission to the water lance, wherein the desired pivoting range of the water lance is not limited.

It is particularly advantageous to provide the holding device with at least one distributor which divides a flowing water flow and connects the water feed line to at least two connecting elements. A large flow of water can be divided into several streams of water, so that a user-friendly design of the flexible management of the water to the water lance is possible.

According to an advantageous variant of the water lance blower at least one valve is integrated in the holding device. The valve serves to regulate the pressure generated in the nozzle of the water lance, whereby the quality of the generated water jet in connection control unit can be influenced by an operator in a simple manner.

In addition, the flexible line from the holding device to the water lance can be designed as a flexible hose system, wherein the water flow is divided into two or more parallel hoses. The distribution of the water flow can take place either within the holding device, such as with a distributor, or through the hose system itself. The distribution of the water flow to two or more hoses leads to significantly lower bending radii of the hose system and thus contributes to the compactness and flexibility of the water lance blower.

It is particularly advantageous to carry out the hose system with four hoses, which are arranged so that each hose is arranged with its cross-sectional center on the corners of an imaginary square. In this way, preferred bending directions of the hose system are generated, which can be aligned according to the desired movements of the water lance. The tubes may be replaced by simple means, e.g. Cable ties are fixed in this arrangement.

Optionally, the hose system is designed with three or more hoses, which are arranged with their cross-sectional center points on a straight line. The alignment of the hose system is to be adapted to the motion sequences of the water lance that the friction on the hose walls is minimized.

According to a further variant, the hose system has a jacket hose which at least partially surrounds two or more hoses. This can be done, for example, especially in particular stressed by bending or contamination portions of the hose system. It is particularly advantageous if the jacket hose is provided in its interior with lubricant (for example talcum), which is distributed substantially between the jacket hose and the hoses. As a result, a friction occurring at bending stress is reduced outside the hose walls.

It when the integrated in the holding device parts of the water supply system are concentrated in a corner of the drive system is particularly advantageous. In this way, range of movement of the water lance is not limited.

Figur 1

eine schematische Darstellung einer Ausführungsform des erfindungsgemäßen Wasserlanzenbläsers,

Figur 2

eine perspektivische Ansicht einer Ausführungsform einer Antriebseinheit,

Figur 3

eine perspektivische Ansicht einer Ausführungsform einer Antriebseinheit mit Dichtungseinrichtungen,

Figur 4

eine weitere perspektivische Ansicht einer Ausführungsform einer Antriebseinheit mit Dichtungseinrichtungen,

Figur 5

eine Darstellung eines Ausführungsbeispiels des Schlauchsystems,

Figur 6

ein weiteres Ausführungsbeispiel des Schlauchsystems,

Figur 7

eine schematische Seitenansicht eines Ausführungsbeispiels mit einer Wasserlanze in Randposition und

Figur 8

eine schematische Draufsicht des Ausführungsbeispiels von Figur 7.

The invention will be explained in more detail with reference to particularly advantageous and preferred embodiments shown in the drawings. Showing:

FIG. 1

a schematic representation of an embodiment of the invention water lance blower,

FIG. 2

a perspective view of an embodiment of a drive unit,

FIG. 3

a perspective view of an embodiment of a drive unit with sealing means,

FIG. 4

another perspective view of an embodiment of a drive unit with sealing devices,

FIG. 5

a representation of an embodiment of the hose system,

FIG. 6

another embodiment of the hose system,

FIG. 7

a schematic side view of an embodiment with a water lance in edge position and

FIG. 8

a schematic plan view of the embodiment of Figure 7.

FIG. 1 schematically shows an embodiment of a water lance blower. A water lance 18 is pivotally mounted on the one hand with its mouth 31 in a hatch 32 and on the other hand (not shown) connected to a hose system 21. The water lance 18 is moved with two modular drive units 2, which each have a motor 3, a rail 10 and a cover 11. A first, vertically oriented drive unit 2 is attached by means of a holding device 1 to the heat system. This vertically oriented drive unit 2 is provided with a second, horizontally oriented drive unit 2 connected. The water lance 18 is articulated by a connecting element 27 with a laterally 37 projecting end 36 of the horizontally oriented drive unit 2.

In the holding device 1 parts of a water supply system are integrated. Thus, the holding device 1 shown connecting device 15, to which a separate water supply can be connected. Within the holding device 1, a distributor 17 is arranged, which subdivides the supplied water flow into a plurality of water flows and forwards them to a corresponding number of connection elements 16. In addition, the holding device 1 has a valve 44 for regulating the water pressure. The forwarding of the water, starting from the connection elements 16 to the water lance 18, takes place by means of a flexible hose system 21.

The holding device 1 is designed with different control displays 20, and control elements 24, by means of which the operating behavior of the water lance blower can be observed and possibly influenced. With the control elements 24 arranged in the holding device 1 control elements 19 can be influenced. The control elements monitor and regulate at least one motor 3 of a drive unit 2 and / or the formation of a water jet. The terminals 23 allow the transmission of data describing the performance of the water lance blower, to a remote and not shown diagnostic unit.

Figure 2 shows a perspective and schematic detail of an embodiment of a drive unit 2 and represents an arrangement of the components of a spindle and guide system inside a profile rail 10, not shown, as well as a likewise not shown cover 11. A motor 3 is connected to a spindle 4 and thus enables the transmission of torque. On the spindle 4 is a Spindle nut 5 is arranged, which is translationally movable on the spindle 4. The spindle nut 5 is connected with sliding shoes 6, these being guided on two rails 7 aligned parallel to the spindle 4. Such a guide system significantly increases the torsional rigidity of the drive system. Furthermore, the spindle nut 5 is connected to a fastening unit 8, which has positioning aids 9 for the exact alignment of structures to be fastened. Due to the fact that during operation of the drive units relative movements take place between the spindle nut 5 and spindle 4 and between the rails 7 and the shoes 6, the drive unit 2 must be carried out sealed against contamination and water, wherein the Fig. 3 and Fig. 4 advantageous Represent embodiments.

FIG. 3 shows a perspective view of an embodiment of a drive unit 2. The outer structure of the drive unit 2 is formed by a cage-like profile rail 10. The rail 10 has a kind of bottom plate 40 and two side walls 41. Between the side walls 41 of the rail 10, a cover 11 is arranged. Between the cover 11 and a side wall 41 of the rail 10, a gap 12 is formed in each case. A fixing unit 8 is arranged outside the rail 10 and thus provides opportunities for attachment of other parts of the water lance blower. The illustrated embodiment has two bellows 28 which extend at least partially across the gap 12. These bellows 28 are not moved with the attachment unit 8 in the operation of the water lance blower, but positioned in the manner shown before the beginning of a cleaning cycle. The protection of the column 12 is supplemented in the illustrated embodiment with the bellows 28 additionally by an arrangement of (not shown) bands. The fastening unit is arranged between an outer metal band and an inner rubber band. After the cleaning cycle, the bellows 28 are pulled so that the entire gap 12 to the Fixing unit 8 is covered. It is also possible to cover the gap 12 on both sides of the fastening unit 8, each with a bellows 28, wherein the fastening unit 8 after the cleaning cycle does not have to be moved to a specific position near one end of the drive unit 2.

FIG. 4 shows a perspective view of an embodiment of a drive unit 2. The outer structure of the drive unit 2 is formed by a cage-like profile rail 10. The rail 10 has a bottom plate 40 and two side walls 41. The side walls 41 incline on the side facing away from the bottom plate 40 inwards. Between the side walls 41 of the rail 10, a cover 11 is arranged. Between the cover 11 and a side wall 41 of the rail 10, a gap 12 is formed in each case. In each case a gap 12, a boat 13 is arranged, which is translationally movable along the gap 12 through the spindle 4 and the motor 3. The translational movement of the boat 13 is guided over two rails 7 on the bottom plate 40 of the rail 10. In order to prevent dirt from entering the interior of the drive unit 2, the side walls 41 of the profile rail 10 and the cover 11 are designed with sealing means, in particular rubber lips 14, which protrude beyond the gaps 12 and partly touch each other. The boat 13 are enclosed by the rubber lips 14, the wedge shape of the shuttle 13 ensures a smooth movement between the rubber lips 14.

FIG. 5 shows a section through a hose system 21, which is designed with four hoses 22. The four tubes 22 each have a cross-sectional center 25, which in the illustrated embodiment are arranged on the corners of an imaginary square (33). Furthermore, the hose system 21 is designed with a jacket hose 34 which surrounds the tubes 22. Between the hoses 22 inside the Jacket hose 34 is lubricant 35, which reduces the friction occurring at a bending stress of the hose system 21.

FIG. 6 shows a further arrangement of hoses 22 of the hose system 21. The hose system 21 is designed with three hoses 22, which are arranged with their cross-sectional center points 25 on a straight line 26. If a bending of the hose system 21 preferably in a direction perpendicular to the straight line 26, the friction between the hoses 22 is significantly reduced, since the hoses 22 always have the same bending radii in this case.

Figure 7 and Figure 8 show schematically different views of an embodiment of a water lance blower with a water lance 18 which is pivotally mounted in a hatch 32 and serve to explain the space-saving arrangement of the water lance blower invention. The water lance 18 is shown in an extremely inclined position which occurs when the spindle nuts 5 (not shown) of the two drive units 2 are moved to an end position on the spindle 5 (not shown). The water lance 18 is moved or pivoted by a connecting element 27 with a laterally projecting end 36. During operation of the water lance blower, the position of the water lance 18 changes, this being guided within a predeterminable range of movement 38 through the connecting element 27. The water lance 18 extends beyond this movement region 38, with an end region 42 of the water lance 18 sweeping over a larger projection surface 39. This projection surface 39 can be regarded as a minimum space requirement for the desired movement sequences of the water lance. For this reason, the water lance blower according to the invention is designed so that it is located substantially within this projection surface 39. The holding device 1 with the integrated parts of the water supply system 43 is arranged in a corner 45 of the projection surface 39, so that it faces the side 37 of the vertical drive unit 2, via which the end 36 of the Connecting element 27 protrudes. The available space is thus used very cheap.

Depending on the operating and environmental conditions, the drive units 2 may also be provided with a separate cooling, in particular an air or water cooling integrated into the base plate 40.

As a result, a water lance blower according to the invention can also be used in particularly hot areas. Channels already present in the bottom plate 40, which are required for producing such profiles, can be used as cooling channels without the rest of the system being changed or adversely affected thereby.

LIST OF REFERENCE NUMBERS

1

holder

2

drive unit

3

engine

4

spindle

5

spindle nut

6

shoe

7

rail

8th

fixing unit

9

positioning

10

rail

11

cover

12

gap

13

shuttle

14

rubber lip

15

connection device

16

connecting element

17

distributor

18

water lance

19

control element

20

indicator

21

hose system

22

tube

23

connection

24

operating element

25

Sectional center

26

Just

27

connecting element

28

bellow

31

muzzle

32

hatch

33

square

34

jacket hose

35

lubricant

36

The End

37

page

38

traversing

39

projection

40

baseplate

41

Side wall

42

end

43

Wasserzuleitungssytem

44

Valve

45

corner

Claims (15)

1. Water lance blower for cleaning heating installations, wherein a water lance (18) connected to a water supply system (43) is arranged pivotally with its mouth (31) on or in a hatch (32) and a water jet can blow through heating installations that are in operation and being blowed through with flames and/or smoke onto wall areas that are reachable via the hatch (32) with a drive system having at least two drive units (2) arranged at right-angles, for controlling a water lance (18), and with a retaining device (1) for attaching the water lance blower to a heating installation, characterised in that the drive units are configured as modules and can be exchanged with one another.
2. Water lance blower according to claim 1, wherein a laterally projecting connecting element (27) with an end (36) for articulating the water lance (18) is arranged on a drive unit (2), characterised in that the connecting element (27) is orientated with its end (36) towards the side (37) opposite the parts (15, 16, 17, 44) of the water supply system (43).
3. Water lance blower according to claim 1 or 2, characterised in that each drive unit (2) is provided with a motor (3), a spindle (4) that can be turned by the motor (3), and a spindle nut (5), wherein the spindle nut (5) can be moved in a translatory manner.
4. Water lance blower according to claim 3, characterised in that the spindle nut (5) is guided by a guidance system with slide shoes (6) and rails (7).
5. Water lance blower according to claim 4, characterised in that the slide shoes (6) are connected with a fastening element (8).
6. Water lance blower according to claim 5, characterised in that the fastening element (8) is provided by positioning aids (9) for accurate orientation of structures (2, 27) that can be attached to the fastening element (8), which are configured in particular as pins and/or grooves and/or bores.
7. Water lance blower according to claim 2 or 3, characterised in that a second drive unit (2) of the same design, or the connecting element (27), can be fixed onto the fastening element (8) of the first drive unit (2).
8. Water lance blower according to one of claims 1 to 7, characterised in that the drive unit (2) has a cage-like profiled rail (10) and a cover (11) that at least partially enclose components (3, 4, 5, 6, 7) of the drive unit (2) that are sensitive to soiling, wherein in particular the fastening element (8) is arranged outside the cage-like profiled rail (10) and is connected through at least one gap (12) to the slide shoes (6) in the interior of the profiled rail (10).
9. Water lance blower according to claim 8, characterised in that at least one extension bellows (28) is arranged such that it at least partially seals the at least one gap (12) between the profiled rail (10) and the cover (11).
10. Water lance blower according to claim 8, characterised in that at least one slide shoe (6) is respectively connected to a rail (7) by means of a shuttle (13) with the fastening element (8), which is arranged in a gap (12) between the profiled rail (10) and cover (11), wherein the profiled rail (10) and the cover (11) are provided with rubber lips (14) that extend over the gap (12), preferably at least partially in touch with one another and lay against the shuttle (13).
11. Water lance blower according to claim 8, characterised in that the gap (12) is sealed by two bands, wherein a structure being attached to the spindle nut (5) is arranged between the bands, in particular between and outwardly orientated metal band and a rubber band inwardly orientated towards the guidance system.
12. Water lance blower according to claim 8, characterised in that air at overpressure can be introduced into the profiled rail (10), whereby the air substantially disperses through the gaps (12) between the profiled rail (10) and cover (11).
13. Water lance blower according to one of claims 1 to 12, characterised in that the retaining device (1) is provided with integrated steering components (19) for the drive system and/or for forming and monitoring the water jet.
14. Water lance blower according to one of claims 1 to 13, characterised in that the retaining device (1) is provided with control indicators (20) and/or operating elements (24) with which the steering components (19) can possibly be influenced.
15. Water lance blower according to one of claims 1 to 14, characterised in that the retaining device (1) is provided with connectors (23) for a remote control and/or remote diagnostics.

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