EP4065242B1 - Lance, in particular extinguishing lance for fighting fires - Google Patents

Description

The invention relates to a lance, in particular an extinguishing lance for firefighting, by means of which at least one additive can be dispensed together with the pressurized fluid.

The EP 2 168 636 A1 describes equipment for making openings in a surface of an object and supplying a fluid into a space through the previously formed opening. This equipment includes a pressure source for supplying a pressurized fluid, a lance with a nozzle assembly, and a line between the pressure source and the nozzle assembly for supplying the pressurized fluid from the pressure source to the nozzle assembly. The pressurized fluid flows essentially in the form of a jet from the nozzle arrangement onto the surface, wherein an additive contained in a vessel can be entrained by a pressure difference built up by the pressurized fluid in the nozzle arrangement. Viewed in the direction of flow, the nozzle arrangement has a first nozzle, a second nozzle and an intermediate chamber between the first and second nozzles. The pressurized fluid flows into the first nozzle and leaves the nozzle arrangement through the second nozzle. At least one inlet or several inlets open into the intermediate chamber of the nozzle arrangement, each inlet being connected to a line or a pipe which is connected to a vessel containing the respective additive, or in the case of several inlets, each connected to different vessels are. An actuating means for a valve is provided at each inlet in order to release or prevent the respective supply of the additive into the intermediate chamber. The actuating means are arranged directly on the nozzle arrangement at their respective inlets. The additive, which acts as an abrasive, can be supplied via an inlet to the intermediate chamber. If a second inlet is provided, an extinguishing foam or an extinguishing powder can be fed to the nozzle arrangement via this, although this is also only possible after the valve has been opened and is drawn into the intermediate chamber of the nozzle arrangement by the fluid under pressure and together with the fluid in shape a fine mist is ejected from the nozzle arrangement.

The IT VI20 120 326 A describes a lance with spaced apart first and second handles, wherein the lance can be used to extinguish fire. By means of a first valve arrangement in the area of the first handle, the supply of a pressurized fluid can be released or prevented. Immediately following the first handle, a control valve is provided in order to be able to selectively supply the pressurized fluid to a first pipe arrangement and/or a second pipe arrangement running parallel thereto. The second handle is in turn mounted on the first tube arrangement with its handle end so that it can be pivoted from a position closer to the operator to a position further away from the operator. With the second handle, the fluid jet to be dispensed from the first pipe arrangement can be adjusted with its respective spray cone. The fluid can be fed to an inner channel in order to release a concentrated jet of fluid from the first pipe arrangement. If the second handle and a control valve connected to it are pivoted, the fluid is fed to an outer channel surrounding the inner channel and a fluid jet with a larger cone angle is emitted.

From the DE 20 2017 102 091 U1 A lance for extinguishing a fire in a room that is closed by at least one closing element has become known. The lance includes at least a first handle that can be grasped by an operator and at least one first channel with a first inlet and a first outlet that can be fluidly connected to a first supply line of a pressurized fluid. The lance further includes a first control lever that acts on the at least one first channel to enable an operator to control the selective inflow of the pressurized fluid therethrough. At least one second channel is provided with a second inlet and a second outlet, which can be fluidly connected to a second supply line of an abrasive powder. A second control lever acts on the at least one second channel to enable an operator to control the selective flow of abrasive therethrough. A first nozzle has a pair of first inlet openings each fluidly connected to the first outlet and the second outlet. A Venturi effect mixing means is used to mix the pressurized fluid and the abrasive powder while selectively activating the inflow thereof through the second channel. A first outlet opening is for spraying a concentrated Jet of the mixture of the pressurized fluid and the abrasive powder is provided. The at least one first handle includes the first and second control levers, the control levers being arranged close together to enable the operator to operate the first control lever and the second control lever with the same hand that grips the at least one first handle. This lance has generally proven itself in use, but when wearing protective gloves it was often difficult to be able to selectively operate the control levers located immediately adjacent to it.

It describes the DE 197 09 098 A1 a cleaning device for cleaning objects that can be applied individually and/or with a mixture of water, compressed air and chemical agents for the purpose of cleaning. For this purpose, a mixing and metering block is provided, which has feeds for the individual cleaning components and a version for discharging the cleaning components in individual or mixed states. A single adjustable means is arranged between the feeds and the execution, which is suitable for releasing all supplied components in a mixed, isolated or metered manner or for blocking at least one of these components.

The object of the present invention was to overcome the disadvantages of the prior art and to provide a lance which can be easily and safely operated by a user in order to be able to control the optional delivery of the additive with just one hand and to do so independently from the operation of dispensing the fluid.

This task is solved by a lance according to the claims.

The lance according to the invention is preferably used to extinguish a fire in firefighting operations, whereby an access opening must first be created through a solid body, such as a wall, a wall part, a body part, a battery or the like, in order to allow the pressurized fluid, usually water, to be able to use or introduce fire fighting in the space behind the solid body. To produce the at least one access opening, an additive, in particular a solid granulate or another cutting agent, is added or mixed into the pressurized fluid and this mixture is applied together by means of the lance to the point at which the access opening is to be produced.

• einen Lanzenkörper,
• eine Griffanordnung, welche Griffanordnung am Lanzenkörper angeordnet oder ausgebildet ist und einen ersten Griff und einen zweiten Griff umfasst, wobei die beiden Griffe in Richtung der Längserstreckung des Lanzenkörpers voneinander beabstandet angeordnet sind und wobei jeder Griff jeweils von einer Hand eines Benutzer für die Bedienung der Lanze erfasst werden kann,
• mindestens einen ersten Kanal mit einem ersten Kanaleinlass und einem ersten Kanalauslass, wobei der erste Kanaleinlass mit einer Zufuhrleitung des mit Druck beaufschlagten Fluides verbindbar ist,
• eine erste Stellmittel-Anordnung, welche erste Stellmittel-Anordnung im Bereich des ersten Griffs der Griffanordnung angeordnet ist und ein erstes Stellmittel mit dem ersten Kanal direkt in Wirkverbindung steht, wobei das erste Stellmittel von einer Sperrstellung zu einer Durchflussstellung und vice versa verstellbar ist und damit der Durchfluss des mit Druck beaufschlagten Fluides durch den ersten Kanal einstellbar ist,
• mindestens einen Behälter mit zumindest einer Entnahmeöffnung, wobei das erste Zusatzmittel im ersten Behälter aufnehmbar ist,
• mindestens einen zweiten Kanal mit einem zweiten Kanaleinlass und einem zweiten Kanalauslass, wobei der zweite Kanaleinlass mit der zumindest einen Entnahmeöffnung des ersten Behälters in Strömungsverbindung steht,
• eine zweite Stellmittel-Anordnung, welche zweite Stellmittel-Anordnung zumindest ein zweites Stellmittel umfasst, wobei das zweite Stellmittel von einer Verschlussstellung zu einer Freigabestellung und vice versa verstellbar ist und damit das Durchströmen des ersten Zusatzmittels durch den zweiten Kanal einstellbar ist,
• eine Düsenanordnung mit einem ersten Düsenkörper, wobei im ersten Düsenkörper zumindest eine erste Einlassöffnung, eine zweite Einlassöffnung, zumindest eine Auslassöffnung und eine Mischkammer ausgebildet oder angeordnet sind, und wobei die Einlassöffnungen in die Mischkammer einmünden und die Mischkammer mit der zumindest einen Auslassöffnung in Strömungsverbindung steht,
• wobei der erste Kanalauslass des ersten Kanals mit der zumindest einen ersten Einlassöffnung des ersten Düsenkörpers in Strömungsverbindung steht, und
• wobei der zweite Kanalauslass des zweiten Kanals mit der zweiten Einlassöffnung des ersten Düsenkörper in Strömungsverbindung steht, wobei weiters vorgesehen ist,
• dass die zweite Stellmittel-Anordnung einen Steuerzapfen umfasst, welcher Steuerzapfen um seine Längsachse verschwenkbar am Lanzenkörper gelagert ist und dass der zweite Griff der Griffanordnung mit dem Steuerzapfen der zweiten Stellmittel-Anordnung drehfest gekoppelt ist, insbesondere der zweite Griff und der Steuerzapfen einstückig ausgebildet sind, und der zweite Griff und der Steuerzapfen gemeinsam um deren Längsachse verschwenkbar sind,
• dass das zumindest eine zweite Stellmittel der zweiten Stellmittel-Anordnung im Steuerzapfen angeordnet ist,
• dass zumindest ein dritter Kanal mit einem dritten Kanaleinlass und einem dritten Kanalauslass vorgesehen ist, und der dritte Kanaleinlass mit der äußeren Umgebung in Strömungsverbindung steht,
• dass der mindestens eine erste Kanal und der zumindest eine dritte Kanal im Lanzenkörper angeordnet oder ausgebildet sind,
• dass der dritte Kanalauslass des dritten Kanals direkt mit der zumindest einen ersten Einlassöffnung des ersten Düsenkörpers in Strömungsverbindung steht,
• dass das zweite Stellmittel der zweiten Stellmittel-Anordnung direkt mit dem dritten Kanal in Wirkverbindung steht und die zweite Stellmittel-Anordnung im Bereich des zweiten Griffs angeordnet ist,
• dass der dritte Kanal bei sich in der Freigabestellung befindlichem zweiten Stellmittel zwischen seinem dritten Kanaleinlass und seinem dritten Kanalauslass durchgängig offen ist und damit ein Durchströmen von Umgebungsluft durch den dritten Kanal hindurch zur Mischkammer ermöglicht ist, und
• dass der dritte Kanal zwischen seinem dritten Kanaleinlass und seinem dritten Kanalauslass bei sich in der Verschlussstellung befindlichem zweiten Stellmittel verschlossen ist und damit ein Durchströmen von Umgebungsluft durch den dritten Kanal hindurch zur Mischkammer unterbunden ist, und in diesem Betriebszustand das erste Zusatzmittel aus dem ersten Behälter via dem zweiten Kanal in die Mischkammer einsaugbar ist, und
• dass der erste Kanal in seinem Längsabschnitt zwischen der zweiten Stellmittel-Anordnung und dem ersten Kanalauslass einen ersten Teilkanal und einen zweiten Teilkanal umfasst und der erste Teilkanal innerhalb des zweiten Teilkanals angeordnet ist.

The lance can also be referred to as an extinguishing lance and/or cutting lance and includes

• a lance body,
• a handle arrangement, which handle arrangement is arranged or formed on the lance body and comprises a first handle and a second handle, the two handles being arranged at a distance from one another in the direction of the longitudinal extent of the lance body and each handle being held by one hand of a user for operating the lance can be detected,
• at least one first channel with a first channel inlet and a first channel outlet, the first channel inlet being connectable to a supply line of the pressurized fluid,
• a first adjusting means arrangement, which first adjusting means arrangement is arranged in the area of the first handle of the handle arrangement and a first adjusting means is directly operatively connected to the first channel, the first adjusting means being adjustable from a blocking position to a flow position and vice versa and thus the flow of the pressurized fluid through the first channel is adjustable,
• at least one container with at least one removal opening, the first additive being able to be accommodated in the first container,
• at least one second channel with a second channel inlet and a second channel outlet, the second channel inlet being in flow connection with the at least one removal opening of the first container,
• a second adjusting means arrangement, which second adjusting means arrangement comprises at least one second adjusting means, wherein the second adjusting means is adjustable from a closed position to a release position and vice versa and thus the flow of the first additive through the second channel is adjustable,
• a nozzle arrangement with a first nozzle body, wherein at least a first inlet opening, a second inlet opening, at least one outlet opening and a mixing chamber are formed or arranged in the first nozzle body, and wherein the inlet openings open into the mixing chamber and the mixing chamber is in flow communication with the at least one outlet opening ,
• wherein the first channel outlet of the first channel is in flow communication with the at least one first inlet opening of the first nozzle body, and
• wherein the second channel outlet of the second channel is in flow connection with the second inlet opening of the first nozzle body, it also being provided that
• that the second adjusting means arrangement comprises a control pin, which control pin is mounted on the lance body so that it can pivot about its longitudinal axis and that the second handle of the handle arrangement is coupled in a rotationally fixed manner to the control pin of the second adjusting means arrangement, in particular the second handle and the control pin are formed in one piece, and the second handle and the control pin can be pivoted together about their longitudinal axis,
• that the at least one second adjusting means of the second adjusting means arrangement is arranged in the control pin,
• that at least one third channel is provided with a third channel inlet and a third channel outlet, and the third channel inlet is in flow communication with the external environment,
• that the at least one first channel and the at least one third channel are arranged or formed in the lance body,
• that the third channel outlet of the third channel is in direct flow connection with the at least one first inlet opening of the first nozzle body,
• that the second adjusting means of the second adjusting means arrangement is in direct operative connection with the third channel and the second adjusting means arrangement is arranged in the area of the second handle,
• that the third channel is continuously open between its third channel inlet and its third channel outlet when the second adjusting means is in the release position, thus allowing ambient air to flow through the third channel to the mixing chamber, and
• that the third channel is closed between its third channel inlet and its third channel outlet when the second adjusting means is in the closed position, thus preventing ambient air from flowing through the third channel to the mixing chamber, and in this operating state the first additive is removed from the first container via can be sucked into the mixing chamber through the second channel, and
• in that the first channel comprises a first sub-channel and a second sub-channel in its longitudinal section between the second actuating means arrangement and the first channel outlet and the first sub-channel is arranged within the second sub-channel.

The advantage achieved in this way is that with a simple adjustment movement of the second adjusting means of the second adjusting means arrangement, the flow through and suction of ambient air into the mixing chamber of the first nozzle body is selectively controlled and thus subsequently the admixture of the first additive to the one under pressure Fluid is enabled or prevented. The flow through or suction of the first additive through the second channel starting from the first container into the mixing chamber is determined by the release or closing of the own and independent third channel in the area of the second actuating means arrangement. The first handle of the lance is held with one hand and the first actuator arrangement is also operated with the same hand. This also prevents unintentional operating errors, since the two actuating means arrangements are arranged at a distance from one another in the direction of the longitudinal extent of the lance. The second adjusting device arrangement can be easily and safely operated with the other hand due to the distance from the first handle. In this way, a spatially clear separation of the two adjusting device arrangements is achieved.

Furthermore, it is also provided if the at least one first channel and the at least one third channel are arranged or formed in the lance body. This achieves a compact design of the lance body.

The second adjusting means arrangement further comprises a control pin, which control pin is mounted on the lance body so that it can pivot about its longitudinal axis. By providing a separate essentially cylindrical control pin, a wide variety of control positions of the individual adjusting means are easily achieved by a simple rotation or pivoting movement of the control pin and the adjusting means located or arranged therein.

Furthermore, the first channel comprises a first sub-channel and a second sub-channel in its longitudinal section between the second adjusting means arrangement and the first channel outlet, and the first sub-channel is arranged within the second sub-channel. By subdividing the first channel following the second actuating means arrangement, an even more universal use of the lance and the associated delivery of different jet shapes is made possible. This enables not only a full jet, but also a spray jet depending on the passage of the pressurized fluid through the respective partial channel. Finally, it is further provided that the second handle of the handle arrangement is coupled in a rotationally fixed manner to the control pin of the second adjusting means arrangement, in particular the second handle and the control pin are formed in one piece. This allows you to easily switch to the desired operating state of the lance without gripping and releasing the second handle. This is done with just one and the same hand, which also grasps the second handle.

Another embodiment is characterized in that the second channel is formed by its own connecting line and the connecting line is arranged to run outside the lance body or inside the lance body. By providing a separate connecting line, which is arranged outside the lance body, it is possible to easily exchange the first container and/or the first nozzle body.

A further embodiment provides that the second adjusting means of the second adjusting means arrangement is formed by an opening passing through the control pin in the radial direction, in particular by at least one bore. By combining the control pin with the opening and its coordinated arrangement, a robust and long-lasting actuating and/or control device can be created.

Another embodiment is characterized in that the second adjusting means arrangement further comprises a third adjusting means and the third adjusting means is directly operatively connected to the second channel, the third adjusting means being adjustable from a closed position to a release position and vice versa and thus the Flow of the first additive through the second channel can be directly adjusted. This means that an additional control option for the second channel can be created in the area of the second actuating means arrangement. The third adjusting means also works together with the second adjusting means. An opposite control position of the second and third adjusting means is always provided, namely such that when the second adjusting means is in the closed position, the third adjusting means is in the release position and vice versa.

A further preferred embodiment is characterized in that the third channel is closed when the second adjusting means is in the closed position and the third adjusting means is in its release position and the second channel is open throughout, or that the third channel is in the release position second Adjusting means is continuously open and the third adjusting means is in its closed position and the second channel is closed. This allows a secure locking or closed position of the second channel to be achieved when the second adjusting means is in the release position. This means that even if the third channel is unintentionally laid, an unwanted removal of the first additive from the first container can be reliably prevented.

Furthermore, it can be advantageous if the second adjusting means and the third adjusting means of the second adjusting means arrangement are arranged spaced apart from one another in the axial direction of the control pin and offset from one another when viewed in the circumferential direction. This means that the extent of the adjustment movement and the associated change in the operating mode of the lance can be achieved depending on the extensive offset.

Another embodiment is characterized in that a second nozzle body is provided, which second nozzle body is arranged upstream of the first nozzle body in the flow direction of the pressurized fluid and the first channel outlet of the first channel is arranged or formed in the second nozzle body. By providing a second nozzle body, an even more individual delivery option for the fluid from the lance can be made possible.

A further preferred embodiment is characterized in that the third channel is also arranged or formed in the second nozzle body. This makes it possible to create a safe channel formation for the third channel that is protected from external environmental influences.

Furthermore, it can be advantageous if the first nozzle body of the nozzle arrangement is held removably on the lance body, in particular removably on the second nozzle body. This creates a simple option for replacing the first nozzle body. For example, a damaged or worn first nozzle body can simply be exchanged for a new first nozzle body, which can significantly increase the service life of the entire lance.

A further possible embodiment has the features that the first sub-channel ends in the axial direction in front of the first channel outlet and opens into the second sub-channel surrounding the first sub-channel and further at least one end section of the first sub-channel is arranged in alignment with the first channel outlet. This can create a straight and central delivery direction of the pressurized fluid from the first partial channel through the first channel outlet and on to the first nozzle body.

Another alternative embodiment is characterized in that the second actuator arrangement further comprises an actuator group with at least a first actuator and a second actuator, which actuators of the actuator group are in direct operative connection with the first channel. By providing a separate group of actuating means with several actuating elements, the forwarding of the fluid into the respective subsequent sub-channel can also be selectively preselected and optionally adjusted.

A further possible and possibly alternative embodiment has the features that the actuating elements of the group of actuating means are each formed by an implementation that penetrates the control pin in the radial direction, in particular by at least one bore. This also makes it possible to create a compact and trouble-free adjustment device for controlling the fluid throughput.

A further embodiment provides that the actuating elements of the actuating means group are arranged at a distance from one another in the axial direction and, viewed in the circumferential direction, are arranged circumferentially offset from one another by an offset angle and optionally only one of the actuating elements allows the flow of the pressurized fluid. This can ensure a safe separation of the supply of fluid into the respective sub-channel. A further embodiment provides that the first actuator of the actuator group is in direct operative connection with the first sub-channel and the second actuator of the actuator group is in direct operative connection with the second sub-channel. This ensures a clear assignment of the respective actuator to the respective sub-channel.

Another alternative embodiment is characterized in that when the second actuating means is in the closed position, the third channel is closed and at the same time the flow connection between the first channel and the first sub-channel is formed by means of the at least one first actuator and further by means of the second actuator the flow connection between the first channel and the second sub-channel is interrupted. Due to the respective control position of the second actuating means in relation to the actuating elements of the actuating means group, a full jet of fluid can be achieved in this control position together with the first additive to be dispensed.

Furthermore, it can be advantageous if the third channel is continuously open when the second actuating means is in the release position and at the same time the flow connection between the first channel and the first sub-channel is formed by means of the at least one first actuating element and further the flow connection between them by means of the second actuating element the first channel and the second sub-channel is interrupted. However, this specified control position enables the delivery of a full jet of fluid without the addition or admixture of the first additive. If a further container with a further additive is also provided and the further container is in flow connection with the third channel via the second adjusting means, the additive stored there can be sucked in simultaneously from both the first container and the second container. In this operating state, the pressurized fluid is also released from the lance with a full jet.

It can also be advantageous if, with the first nozzle body removed and the second adjusting means in the closed position, the third channel is closed and at the same time the flow connection between the first channel and the first sub-channel is interrupted by means of the at least one first actuator and further by means of the second Actuator, the flow connection between the first channel and the second sub-channel is formed. By previously removing or removing the first nozzle body and the control position selected for it, the delivery of a spray jet from the lance is made possible.

Furthermore, it can be advantageous if a further container is provided for a further additive to be accommodated therein and the further container is in flow connection via a fourth channel with the second adjusting means arrangement and further with the third channel. This means that in the operating position of the second actuating device arrangement in which the A full jet is delivered with the attached first additive, which creates the possibility of not sucking in the ambient air directly into the third channel, but indirectly via the other container. A separate container opening must also be provided for sucking in the additional additive in order to enable ambient air to flow in and be sucked into the container interior.

Another alternative embodiment is characterized in that at least one of the containers is held removably on the lance body. This means that the container or containers can be easily and quickly refilled or replaced during ongoing use.

A further possible alternative embodiment is characterized in that a pivoting arrangement is provided, by means of which pivoting arrangement at least the first container is pivotally held on the lance body. This means that the container or the respective containers can be aligned relative to the lance body in such a way that the suction point is always at the position closest to the ground.

A further possible and possibly alternative embodiment has the features that at least one container opening is provided, which at least one container opening opens into a container interior of the container. This allows ambient air to flow into the interior of the container. Otherwise, a negative pressure would build up in the interior of the container due to the suction effect exerted on the additive.

Finally, a further embodiment provides that the container interior is in flow connection with the external environment via the container opening and at least one filter element is arranged in the container opening. Depending on the choice and design of the filter element, an unintentional inflow of dirt, dust particles, the previously released additive and/or air humidity can be reduced or completely prevented.

A possible alternative embodiment is characterized in that at least the further container is provided and the second adjusting means arrangement further comprises the third adjusting means, with the second adjusting means arrangement being in a first operating position the third actuator and the first actuator of the actuator group are each in their release position and the second actuator is in its closed position and the third channel is closed, and the first actuator of the actuator is in a second operating position of the second actuator arrangement. Group and the second adjusting means are each in their release position and the third adjusting means is in its closed position and the second channel is closed. With this design and arrangement of the actuating means and the actuating elements of the second actuating means arrangement and the respective selected operating position, a switching process for the admixture or admixture of the additive required in each case can be carried out quickly and in a user-friendly manner.

Furthermore, it can be advantageous if the additive is selected from the group of solid granules, abrasive agents, extinguishing powders, extinguishing additives, foaming agents, dry ice, and decontamination agents. This allows a high degree of variation to be created for a wide variety of purposes and operating conditions.

For a better understanding of the invention, it will be explained in more detail using the following figures.

Fig. 1

eine mögliche Ausbildung einer Lanze, in schaubildlicher Darstellung;

Fig. 2

die Lanze nach Fig. 1 im Betriebszustand Vollstrahl mit einem ersten Zusatzmittel, im Längsschnitt;

Fig. 3

die Lanze nach Fig. 1 im Betriebszustand Vollstrahl ohne erstes Zusatzmittel, im Längsschnitt;

Fig. 4

die Lanze nach Fig. 1 im Betriebszustand Sprühstrahl sowie bei abgenommenem ersten Düsenkörper, im Längsschnitt;

Fig. 5

den ersten Düsenkörper der Lanze, im Axialschnitt und vergrößerter Darstellung;

Fig. 6

den Steuerzapfen der Lanze gemäß seiner Betriebsstellung in der Fig. 2, in einer Ansicht in Richtung der Durchströmrichtung;

Fig. 7

den Steuerzapfen der Lanze gemäß seiner Betriebsstellung in der Fig. 3, in einer Ansicht in Richtung der Durchströmrichtung;

Fig. 8

den Steuerzapfen der Lanze gemäß seiner Betriebsstellung in der Fig. 4, in einer Ansicht in Richtung der Durchströmrichtung;

Fig. 9

eine mögliche Ausführungsvariante der Lanze, bei welcher auch die zweite Leitung für das erste Zusatzmittel von einem dritten Stellmittel gesteuert wird, im Längsschnitt;

Fig. 10

eine alternative Ausführungsvariante der Lanze, bei welcher via den dritten Kanal ein weiteres Zusatzmittel aus einem weiteren Behälter dem Fluid beigegeben werden kann, im Längsschnitt;

Fig. 11

eine weitere mögliche Ausbildung der zweiten Stellmittel-Anordnung zur wahlweisen Abgabe des ersten Zusatzmittels aus dem ersten Behälter oder des zweiten Zusatzmittels aus dem zweiten Behälter, in deren ersten Betriebsstellung, im Längsschnitt;

Fig. 12

die zweite Stellmittel-Anordnung nach Fig. 11, jedoch in deren zweiten Betriebsstellung, im Längsschnitt.

They show in a highly simplified, schematic representation:

Fig. 1

a possible formation of a lance, in a diagrammatic representation;

Fig. 2

the lance after Fig. 1 in the full jet operating state with a first additive, in longitudinal section;

Fig. 3

the lance after Fig. 1 in full jet operating mode without first additive, in longitudinal section;

Fig. 4

the lance after Fig. 1 in the spray jet operating state and with the first nozzle body removed, in longitudinal section;

Fig. 5

the first nozzle body of the lance, in axial section and enlarged view;

Fig. 6

the control pin of the lance according to its operating position in the Fig. 2 , in a view in the direction of the flow direction;

Fig. 7

the control pin of the lance according to its operating position in the Fig. 3 , in a view in the direction of the flow direction;

Fig. 8

the control pin of the lance according to its operating position in the Fig. 4 , in a view in the direction of the flow direction;

Fig. 9

A possible embodiment variant of the lance, in which the second line for the first additional means is also controlled by a third adjusting means, in a longitudinal section;

Fig. 10

an alternative embodiment variant of the lance, in which a further additive from another container can be added to the fluid via the third channel, in a longitudinal section;

Fig. 11

a further possible embodiment of the second adjusting means arrangement for selectively dispensing the first additive from the first container or the second additive from the second container, in its first operating position, in longitudinal section;

Fig. 12

the second adjusting device arrangement Fig. 11 , but in its second operating position, in a longitudinal section.

As an introduction, it should be noted that in the differently described embodiments, the same parts are provided with the same reference numbers or the same component names, whereby the disclosures contained in the entire description can be transferred analogously to the same parts with the same reference numbers or the same component names. The position information selected in the description, such as top, bottom, side, etc., is also related to the figure directly described and shown and, in the event of a change in position, these position information must be transferred accordingly to the new position.

The term “in particular” is understood below to mean that it can be a possible more specific training or more detailed specification of an object or a process step, but does not necessarily have to represent a mandatory, preferred embodiment of the same or a mandatory procedure.

In the following description and in the claims, the term is used directly or indirectly for the effect of the actuating means or the group of actuating means on the respective channel. The term is to be understood directly as meaning that the respective actuating means or one of the actuating elements of the actuating means group itself physically acts on the channel connected to it and enables or prevents the flow or the flow through of the respective medium. The term indirect is to be interpreted in such a way that the respective actuating means or one of the actuating elements of the actuating means group is physically operatively connected to one of the channels and enables or closes the flow or the flow through of the respective medium in the respective channel, but depending on the operating position The flow or flow through of another medium is also enabled or prevented in another of the channels.

In the Fig. 1 to 12 A lance 1 or its individual components is shown, which can also be referred to as an extinguishing lance. Such lances 1 are used, for example, in fire brigade operations to fight fires in which initially no access to the source of the fire is possible because the room is closed or enclosed by walls. In order to gain access to the room in which the source of the fire is located, at least one access opening must be formed through the wall. Depending on the material or material composition of the wall, forming or introducing the access opening involves increased effort. Basically, a pressurized fluid, such as water, is used to fight fires or fires. It is known to mix or add at least one additive 2 to the pressurized fluid. The basic concept of the lance 1 is always the same; only different operating states and/or additional designs are shown and described in the individual figures.

If the lance 1 is designed as a universal lance, it can be used to dispense the fluid alone and/or also a mixture, a solution, a suspension or an emulsion consisting of the at least one first additive 2 and the fluid together. This is preferably done at high to very high pressures above ambient pressure.

The lance 1 includes several component components, which are listed and described below. The lance 1 thus comprises a lance body 3, which can also be formed from several lance body parts. The lance body 3 is for operation and mounting the lance 1 has a handle arrangement 4 arranged. The handle arrangement 4 in turn comprises a first handle 5 and a second handle 6, the two handles 5, 6 being arranged at a distance from one another in the direction of the longitudinal extent of the lance body 3. Due to this usually usual spacing, a user of the lance 1 can grasp the first handle 5 with one hand and the second handle 6 with the other hand and can thus hold and operate the lance 1 sufficiently firmly. In order to be able to apply a high pressure force or a high pressing force of the lance 1 to that point on the wall in which the access opening is to be made, an unspecified shoulder rest can be provided on the lance 1, in particular its lance body 3.

Furthermore, at least one first channel 7 is provided with a first channel inlet 8 and a first channel outlet 9 spaced apart from it in the flow direction, with the first channel 7 forming a flow connection between the first channel inlet 8 and the first channel outlet 9. The first channel inlet 8 can be connected, in particular coupled, to an indicated supply line 10. In order to control the supply of the fluid and subsequently the flow of the fluid at least through the first channel 7, a first adjusting means arrangement 11 is provided, which is arranged in the area of the first handle 5 of the handle arrangement 4. In order to enable this control and the associated blocking position or flow position of the first channel 7, the first adjusting means arrangement 11 comprises at least one first adjusting means 12. The first adjusting means 12 is preferably mechanically adjustable and stands manually from the blocking position to the flow position and vice versa directly connected to the first channel 7. Depending on the preselected position of the first adjusting means 12, the flow of the pressurized fluid through the first channel 7 can be adjusted.

At least a first container 13 is provided to accommodate the first additive 2 and its direct, immediately adjacent arrangement to the lance body 3. The container 13 is held on the lance body 3 in a removable manner if necessary and has at least one removal opening 14.

In order to create a line connection for the transport of the first additive 2, at least one second channel 15 with a second channel inlet 16 and a second channel outlet 17 is provided. The second channel inlet 16 is in flow connection with the removal opening 14 of the first container 13.

At the end of the lance 1 facing away from the first handle 5, a nozzle arrangement 18 with a first nozzle body 19 is arranged, which serves to dispense the fluid or the mixture of the fluid and the first additive 2. The nozzle arrangement 18 can also include a second nozzle body 20, which is arranged upstream of the first nozzle body 19 in the flow direction of the pressurized fluid. If the second nozzle body 20 is provided, the first channel outlet 9 of the first channel 7 can be arranged or formed in the second nozzle body 20. Furthermore, it can be advantageous if the first nozzle body 19 of the nozzle arrangement 18 is held removably on the lance body 3, in particular removably on the second nozzle body 20. In this case, the second channel 15 is to be designed to be separable or interruptible between its second channel inlet 16 and its second channel outlet 17.

The first nozzle body 19 has at least a first inlet opening 21, a second inlet opening 22, at least one outlet opening 23 and a mixing chamber 24. Adjacent to the inlet openings 21, 22, an inlet channel is formed, within which the respective medium is passed through. The inlet openings 21, 22 in turn open into the mixing chamber 24, the mixing chamber 24 being in flow connection with the at least one outlet opening 23. The first inlet opening 21 defines a longitudinal axis 25 with the second inlet opening 22, which has a parallel orientation with respect to the longitudinal extent of the lance body 3. The longitudinal axis 25 also defines the basic radiation direction of the fluid to be dispensed or the mixture of the fluid and the additive 2. The first inlet opening 21 preferably has an orientation aligned in the direction of the longitudinal axis 25, and is therefore directed in the direction of the lance body 3. For this purpose, the second inlet opening 22 has an angular arrangement, which can preferably be a normal orientation with respect to the longitudinal axis 25. An acute angle can also be included between the second inlet opening 22 and the longitudinal axis 25.

Furthermore, the first channel outlet 9 of the first channel 7 is in flow connection with the at least one first inlet opening 21 of the first nozzle body 19. The second channel outlet 17 of the second channel 15 is in flow connection with the second inlet opening 22 of the first nozzle body 19. This means that both the fluid can be fed to the mixing chamber 24 via the first channel 7 and the first additive 2 via the second channel 15.

The lance 1 further comprises in the area of the lance body 3 at least one third channel 26 with a third channel inlet 27 and a third channel outlet 28 spaced therefrom. The third channel inlet 27 is in turn in flow connection with the external environment. This allows ambient air to flow or be sucked into the third channel 26. The third channel outlet 28 is in turn also in flow connection with the first inlet opening 21 of the first nozzle body 19. This can be done because the first inlet opening 21 has a larger inlet cross section. However, it would also be possible to divide the first inlet opening 21 into at least two partial openings. Then, for example, the first channel 7 could open into the first partial opening and the third channel 26 could open into the second partial opening.

To selectively control the passage through the third channel 26, a second actuating means arrangement 29 is provided, which comprises at least one second actuating means 30. The second adjusting means 30 can in turn be adjusted from a closed position to a release position and vice versa. This means that the flow of the first additive 2 through the second channel 15 can be adjusted. The second adjusting means 30 interacts directly with the third channel 26 and indirectly controls the suction or flow of the first additive 2 through the second channel 15. This creates a direct operative connection between the second adjusting means 30 and the third channel 26. It can also be seen that the second adjusting means arrangement 29 is arranged in the area of the second handle 6 of the lance 1.

If the second adjusting means 30 is in its release position, the third channel 26 is continuously open and additional "external air" can be sucked into the mixing chamber 24 via the third channel 26 when the fluid flows through the first channel 7. Aspiration of the first additive 2 from the first container 13 via the second channel 15 into the mixing chamber 24 is not possible in this operating state. However, if the second adjusting means 30 is in its closed position, the third channel 26 is closed and ambient air is prevented from flowing through. In this operating state, the first additive 2 is sucked from the first container 13 into the mixing chamber 24 via the second channel 15.

The at least one first channel 7 and the at least one third channel 26 are preferably located in the lance body 3 and are thus arranged or formed in the lance body 3.

The second channel 15 can preferably be formed by its own connecting line. Furthermore, the connecting line can be arranged to run outside the lance body 3, as shown in Fig. 1 and 2 is shown. However, it would also be possible to arrange or design the connecting line forming the second channel 15 within the lance body 3. This is in the Fig. 3 suggested as a possible variant.

If the second nozzle body 20 is provided or arranged or formed on the lance body, both the first channel 7 and the third channel 26 are arranged or formed in the second nozzle body 20.

The second actuating means arrangement 29 located in the area of the second handle 6 can include a control pin 31 or be formed by it. The control pin 31 is also mounted on the lance body 3 so that it can be pivoted or rotated about its longitudinal axis. The second handle 6 of the handle arrangement 4 is preferably coupled in a rotationally fixed manner to the control pin 31 of the second adjusting means arrangement 29. A one-piece design of the second handle 6 and the control pin 31 is also possible. The control pin 31 is rotatably received in a hollow cylindrical recess, in particular a bore, which is formed or arranged in the lance body 3. The channels 7, 15, 26 and 47, viewed in the direction of flow, open into the hollow cylindrical recess and continue downstream.

The control pin 31 basically has a cylindrical basic shape, possibly with different diameters. In this exemplary embodiment, the previously described second adjusting means 30 can be formed by a breakthrough 32 passing through the control pin 31 in the radial direction or by a breakthrough 32 passing through the control pin 31 in the normal direction with respect to the longitudinal axis of the control pin 31. The opening 32 is preferably formed by at least one bore which completely penetrates the control pin 31.

In order to form a different jet formation of the pressurized fluid, it can also be provided in this lance 1 that the first channel 7 has a first sub-channel 33 and at least one second sub-channel 34 in its longitudinal section between the second adjusting means arrangement 29 and the first channel outlet 9 includes or is divided into these. When it comes to the jet formation in the lance 1, a distinction can be made between a so-called full jet and a spray jet. The full jet represents a more circumferentially concentrated jet pattern of the fluid, with the spray jet having a spatially concentrated pattern represents significantly larger beam formation. The cone angle is significantly smaller with a solid jet than with a spray jet.

The first partial channel 33 here is the channel which is arranged within the second partial channel 34 and through which the fluid to form the full jet is preferably passed centrally through the lance body 3. The second sub-channel 34 surrounds the first sub-channel 33. The first sub-channel 33 ends in the axial direction in front of the first channel outlet 9 and opens into the second sub-channel 34 surrounding the first sub-channel 33. In its end section, the second partial channel 34 has a conically tapering cross-sectional shape. To form the spray jet, a deflection body 35 can be provided in the end region or in the end section of the second partial channel 34. In this exemplary embodiment, the first partial channel 33 preferably passes through the deflection body 35 centrally and opens into the conically tapering second partial channel 34. This means that at least one end section of the first partial channel 33 is arranged in alignment with the first channel outlet 9. At least one or preferably several flow openings for the fluid to be fed through can be provided in the deflection body 35.

To selectively feed the two partial channels 33, 34, the second actuating means arrangement 29 can further comprise an actuating means group 36 with at least a first actuating element 37 and a second actuating element 38. As described above, the second adjusting means arrangement 29 is located in the area of the second handle 6 and preferably also in the control pin 31. The adjusting means group 36 is therefore also arranged or formed in the control pin 31 and its control positions can be adjusted by a rotary or pivoting movement of the control pin 31 can be adjusted about its longitudinal axis. Furthermore, the actuating elements 37, 38 of the actuating means group 36 are directly in operative connection with the first channel 7 before it is divided into the sub-channels 33, 34.

The actuating elements 37, 38 of the actuating means group 36 can each be formed by an penetration 39 which penetrates the control pin 31 in the radial direction, in particular by at least one bore. In order to achieve perfect separation and feeding of the two sub-channels 33, 34 in direct connection to the control pin 31 and its actuating elements 37, 38, the actuating elements 37, 38 are spaced apart from one another in the axial direction and, viewed in the circumferential direction, are arranged circumferentially offset from one another by an offset angle. Due to the extensive displacement of the actuating elements 37, 38 to one another Depending on the selected control position of the control pin 31, only one of the actuating elements 37, 38 can enable the flow of the pressurized fluid. In this exemplary embodiment, the first actuator 37 is in direct operative connection with the first sub-channel 33, whereas the second actuator 38 is in direct operative connection with the second sub-channel 34.

The adjustment movements to be carried out circumferentially or in the circumferential direction around the longitudinal axis of the control pin 31 can be limited by stop means with cooperating stop limiting elements. Since this possibility is well known, it will not be discussed in more detail.

It has proven to be advantageous if a mechanical safety lock is provided in the presence of the first container 13 on the lance body 3 in connection or in cooperation with the second adjusting means arrangement 29. For example, the mechanical safety lock can be designed in such a way that the second channel 15 has a stop element 50 located on the control pin 31 - see Fig. 4 and 10 - interacts and the spray jet operating position is not possible with the addition of the first additive 2. The second channel 15, which leads from the first container 13 to the first nozzle body 19 and is designed, for example, as a tube, forms a stop for the stop element 50 and prevents the control pin 31 from being switched or repositioned into the position in the Fig. 8 operating position shown. In this embodiment, a protection mechanism against misoperation is provided. This can safely prevent the fluid from coming back into the first container 13 via the second channel 15.

In the Fig. 6 to 8 a possible design of the control pin 31 is shown solely with its second adjusting device arrangement 29. The viewing direction of the control pin 31 is chosen so that it is directed, starting from the user of the lance 1, in the direction of the longitudinal extension towards the nozzle arrangement 18.

In the Fig. 6 the control position of the second actuating means arrangement 29 is shown, in which both the fluid as a full jet and the first additive 2 are released together by means of the lance 1. This operating position is also in the Fig. 2 visible.

The second adjusting means 30 is in its closed position, whereby the third channel 26 is closed and no ambient air flows through the third channel 26 can. At the same time, the at least one first actuator 37 is in its release position and establishes or forms the flow connection between the first channel 7 and the first sub-channel 33. Furthermore, the flow connection between the first channel 7 and the second sub-channel 34 is interrupted by means of the second actuator 38.

In the Fig. 7 the control position of the second actuating means arrangement 29 is shown, in which the fluid is dispensed as a full jet, but without admixture of the first additive 2, by means of the lance 1. This operating position is also in the Fig. 3 visible.

For this purpose, the second adjusting means 30 is in its release position, whereby the third channel 26 is continuously open. At the same time, the flow connection between the first channel 7 and the first sub-channel 33 is formed by means of the at least one first actuator 37. Furthermore, the flow connection between the first channel 7 and the second sub-channel 34 is interrupted by means of the second actuator 38. The pivoting direction of the control pin 31 is based on the control position Fig. 6 indicated with an arrow direction above the control pin 31. This is to be done counterclockwise here.

The delivery of different jet designs using the lance 1 can be carried out with both nozzle bodies 19, 20. However, there is also the possibility of removing the first nozzle body 19 from the second nozzle body 20 and, if necessary, also interrupting the line connection of the second channel 15.

The Fig. 8 shows the control position of the second actuating means arrangement 29, in which only the previously described spray jet can be released. This operating position is also in the Fig. 4 visible.

For this purpose, the previously described first nozzle body 19 must be removed or removed from the lance body 3, in particular from the second nozzle body 20. The mutual holding can be done, for example, by means of a bayonet lock or a threaded arrangement. Furthermore, the line connection of the second channel 15 can also have to be broken. For the sake of clarity, the detailed description and illustration have been omitted. Due to the removal of the first nozzle body 19 and the associated line interruption of the second channel 15, no first additive 2 can be removed from the first container 13. That's why the control position of the second one is Adjusting means 30 is not important in relation to the third channel 26 and is therefore irrelevant.

In this control position, the second adjusting means 30 is, for example, in its closed position, whereby the third channel 26 is closed. At the same time, the flow connection between the first channel 7 and the first sub-channel 33 is interrupted by means of the at least one first actuator 37. For this purpose, the flow connection between the first channel 7 and the second partial channel 34 of the first channel 7 is formed by means of the second actuator 38. The better distribution of the fluid to generate the spray jet can be achieved by means of the deflection body 35 in the end section of the second partial channel 34.

At least one solid granulate is used as additive 2 for separating or cutting purposes, which can also be referred to as a so-called abrasive and can be made from a wide variety of materials. These can be, for example, the materials iron, steel, quartz, carbides, etc. The additive 2 can also be formed by dry ice or by a foam agent, an extinguishing powder, an extinguishing additive or even by a decontamination agent.

Preferably, at least the first container 13 can be held detachably on the lance body 3. Appropriate coupling means must be provided for this purpose. The arrangement and mounting of the first container 13 on the lance body 3, or the connection to the second channel 15, can also be designed such that a pivoting movement of the first container 13 relative to the lance body 3 or the second channel 15 is possible. For this purpose, the unspecified coupling means can also include a pivoting arrangement 43. By means of the pivoting arrangement 43, it is possible to pivot the first container 13 with the first additive 2 contained therein in such a way that, due to gravity, it is always at the point at which the removal point is located within the first container 13. In the interior of the first container 13, a tube located in a fixed position is provided, starting from the coupling means or the pivoting arrangement 43. A user can thus hold the lance body 3 in a position specific to the respective use, for example the handles 5, 6 are not directed towards the ground in a vertical direction, but in a horizontal orientation. The position of the first container 13 can now be readjusted so that the removal point again occupies the position closest to the floor. In the area of the coupling means with the second channel 15 is also the removal opening 14 from the first container 13.

In order to be able to fill or refill the first additive 2 into the first container 13, a filling opening 44 can be provided - see also Fig. 1 .

In order to enable an inflow of ambient air during the removal of the first additive 2 from the container interior of the first container 13, at least one container opening 40 can be provided. The at least one container opening 40 opens into the container interior of the first container 13 and passes through the container wall. The interior of the container is thus in flow connection with the external environment via the container opening 40. It can be advantageous, for example, to reduce or prevent the inflow or suction of dirt particles, the used and released additive 2 or air moisture, at least one filter element 41 can be arranged in the at least one container opening 40.

As described above, the supply of the first additive 2 via the second channel 15 is indirectly controlled by the release or closure of the third channel 26 and the at least one second adjusting means 30, which is directly in operative connection with the third channel 26.

In addition, it would also be possible, as in the Fig. 9 is shown, in the area of the second adjusting means arrangement 29, a third adjusting means 42 is provided, which is in direct operative connection with the second channel 15. The third adjusting means 42 is in turn adjustable from a closed position to a release position and vice versa. This means that the flow of the first additive 2 through the second channel 15 can be adjusted directly. When the second adjusting means 30 is in the closed position, the third channel 26 is closed, while at the same time the third adjusting means 42 is in its release position and so the second channel 15 is continuously open. In this operating position or control position, the first actuator 37 is also in its release position and there is a flow connection between the first channel 7 and the subsequent first sub-channel 33. At the same time, however, the flow connection between the first channel 7 and the subsequent second sub-channel 34 is by means of the second Actuator 38 interrupted.

In the further possible control position of the second adjusting means arrangement 29, the second adjusting means 30 can be in its release position, with the third channel 26 being continuously open, but the third adjusting means 42 being in its closed position and the second channel 15 being closed. In this control position, removal of the first additive 2 from the first container 13 is safely prevented. The second adjusting means 30 and the third adjusting means 42 of the second adjusting means arrangement 29 are spaced apart from one another in the axial direction and are arranged offset from one another when viewed in the circumferential direction.

The actuators 37, 38 of the actuator group 36 can be arranged in the axial direction between the second actuator 30 and the third actuator 42.

The third adjusting means 42 of the second adjusting means arrangement 29 can also, as already described above, be formed by at least one opening passing through the control pin 31 in the transverse direction with respect to its longitudinal extent, in particular by at least one bore.

In the Fig. 10 It is also shown that in addition and as an alternative to the first additive 2, which is to be removed or sucked in from the first container 13, a further additive 45 can optionally be added or mixed into the fluid passed through the first channel 7. A further container 46 is provided to accommodate or store the additional additive 45. The further additive 45 can be selected from the group of solid granules, abrasive, extinguishing powder, extinguishing additive, foaming agent, dry ice, decontamination agent. In most cases, however, solid granules or abrasives are no longer used, although this cannot necessarily be ruled out.

The design and the control position of the control pin 31 with its adjusting means 30 and actuating elements 37, 38 formed or accommodated therein can be carried out as described in Fig. 7 is shown.

The further container 46 is first in flow connection with the second adjusting means arrangement 29 and the second adjusting means 30 via a fourth channel 47. The second adjusting means 30 is in its release position and thus establishes the continuous flow connection starting from the further container 46 via the third channel 26 to the third channel outlet 28. In order to prevent an interruption in the supply of the further additive 45 from the further container 46, a switching element can be installed in the fourth channel 47, for example 48 can be provided, by means of which the supply and suction of ambient air into the third channel 26 or the suction of the further additive 45 from the further container 46 into the third channel 26 can be selectively controlled. If the switching element 48 is in the operating position in which the intake of ambient air into the third channel 26 is enabled, and the second actuating means 30 and the actuating elements 37, 38 are also in the previously in the Fig. 7 Operating position described, the fluid is released from the lance 1 in a full jet, but without the first additive 2. In the further possible operating position of the switching element 48 and with the position of the second adjusting means 30 and the adjusting elements 37, 38 remaining unchanged, both the first additive 2 is sucked in via the second channel 15 and the second additive 45 is sucked in via the third channel 26 Mixing chamber 24.

The further container 46 preferably also includes the previously described at least one container opening 40 for sucking in ambient air into the interior of the container. Furthermore, the filter element 41 can also be provided for the container opening 40.

Furthermore, in the Fig. 10 still shown that at least the first container 13 and / or the further container 46 can or can be in line connection with at least one additional pressure source 49. So each of the containers 13, 46 can be connected to its own pressure source 49. However, a common pressure source 49 could also be provided for the containers 13, 46. The at least one pressure source 49 can be formed, for example, by a cartridge or a gas bottle with a pressurized propellant gas, which has fire-retardant properties or a fire-retardant effect. This can be, for example, CO ₂ which is held in a storage container (not specified). For the sake of clarity, the detailed names and descriptions of various line connections have been omitted.

In the Fig. 11 and 12 a further and possibly independent embodiment of the lance 1, in particular its second adjusting means arrangement, is shown, with the same reference numbers or component names as in the previous ones for the same parts Fig. 1 to 10 be used. In order to avoid unnecessary repetitions, please refer to the detailed description in the previous sections Fig. 1 to 10 pointed out or referred to.

The formation of the lance body 3 with the channels 7, 15 and 26 as well as the sub-channels 33 and 34 of the first channel 7 can be carried out analogously, as has already been described in detail previously.

In this exemplary embodiment it is provided that the lance 1 comprises at least the two previously described containers 13 and 46, whereby these can be arranged directly on the lance body 3 or can optionally also be arranged separately from it. A selected one of the previously described additives 2, 45 is accommodated in each of the containers 13, 46. The further container 46 can be in flow connection via the fourth channel 47 with the second adjusting means arrangement 29 and the second adjusting means 30 located there, as shown in FIG Fig. 10 has already been described. The provision of the switching element 48 can, if necessary, be dispensed with.

The second channel 15 stands for the first additive 2, as in the Fig. 9 is shown and described, in direct operative connection with the third adjusting means 42 of the second adjusting means arrangement 29. The control pin 31 is preferably also provided here, although the arrangement and design of the adjusting means 30, 42 and the adjusting elements 37 and 38 of the adjusting means -Group 36 must be adapted to the required operating positions. This can be achieved, for example, by dismantling or removing the existing control pin 31, possibly together with the second handle 6, from the lance body 3 and replacing it with an adapted new additional control pin 31'.

This is how it shows Fig. 11 that operating position or control position of the actuating means 30, 42 and the actuating elements 37 and 38 of the actuating means group 36, which are formed or arranged on the control pin 31, in which the first actuating element 37 of the actuating means group 36 controls the flow of the pressurized fluid from the first Channel 7 releases into the first sub-channel 33 following in the direction of flow. This represents the release position for the flow of fluid. The second actuator 38 of the actuator group 36 is in its closed position or blocking position. It may possibly be possible to dispense with the design or arrangement of the second actuator 38 at all.

Furthermore, the second adjusting means 30, in particular the opening 32 forming the adjusting means 30, is in its closed position or blocking position. However, the third adjusting means 42 for the second channel 15 is in its release position. In this operating position, the third channel 26 is to be considered closed, the fluid flows from the second Channel 7 via the opened first actuator 37 into the first partial channel 33 to the first channel outlet 9, further into the mixing chamber 24 of the first nozzle body 19 and exits the lance 1 at the outlet opening 23. Since the third adjusting means 42 for the second channel 15 is in its release position, the first additive 2 can be sucked into the mixing chamber 24 and added to the fluid before it emerges from the first nozzle body 19. This is also because the second adjusting means 30 is in its closed position or locked position.

In the Fig. 12 the operating position or control position of the actuating means 30, 42 and the actuating elements 37 and 38 of the actuating means group 36 is shown, in which an admixture or admixture of the first additive 2 is not provided. However, only the further or second additive 45, starting from the second or further container 46, possibly the fourth channel 47, should reach the mixing chamber 24 via the third channel 26 and be mixed there with the fluid flowing through.

For this purpose, the third adjusting means 42 for the second channel 15 is in its closed position or blocked position. This prevents the supply or suction of the first additive 2 from the first container 13. The second adjusting means 30, in particular the opening 32 forming the adjusting means 30, is in its release position. A continuous flow connection is thus formed starting from the further container 46, possibly the fourth channel 47, the second adjusting means 30, the third channel 26 up to the third channel outlet 28. The first actuator 37 of the actuator group 36 is in its release position and directs the fluid from the first channel 7 into the subsequent first sub-channel 33. The second actuator 38 of the actuator group 36 is in its closed position or blocking position.

With this design of the second actuating means arrangement 29, it is possible to deliver a full jet of fluid in both operating positions, but to be able to optionally deliver different additives 2, 45. In the first operating position according to Fig. 11 only or exclusively the first additive 2 is added to the fluid via the second channel 15. However, if the second operating position according to the Fig. 12 selected, only or exclusively the further additive 45 is added to the fluid via the third channel 26.

This provides the user of the lance 1 with a simple switching option when in use. In the first operating position, a cutting or separating process can be carried out in the solid body, which usually represents an obstacle to the extinguishing or cooling process, to form the access opening. Once this has been done, it is possible to quickly switch or switch to adding or mixing in the further additive 45, in particular with a pivoting movement of the second handle 6 together with the control pin 31 'around its longitudinal axis. Depending on which container 13, 46 is currently being removed, the respective additive 45, 2 can be refilled into the container 46, 13 that is not required, or a container can be replaced at all.

Furthermore, it can also be provided that not only a full jet can be emitted with the lance 1, but possibly also a spray jet, as has already been described previously. For this purpose, the first nozzle body 19 can remain arranged on the lance body 3 or the second nozzle body 20. However, a removal or removal of the same is preferably provided.

With the appropriate arrangement and design of the second actuator 38, the forwarding of the fluid from the first channel 7 into its second sub-channel 34 can be optionally controlled. For this purpose it would be possible to use a locking or separating element 51 - see Fig. 1 - To be provided in the longitudinal course of the second channel 15. This means that the flow of the first additive 2 through the second channel 15 can be interrupted or blocked and/or it is possible to remove the first nozzle body 19 with a portion of the second channel 15 up to the blocking or separating element 51. With the appropriate operating position, the second additive 45 can then be mixed or added after the second actuator 30 has been released through the third channel 26, although the pressurized fluid is fed to the second sub-channel 34 via the second actuator 38. The fluid subsequently flows into the mixing chamber 24 and is combined there with the second or further additive 45 and released together from the lance 1.

Finally, it should be noted that the Fig. 1 to 12 Lance 1 shown and its components are only possible exemplary embodiments, although different arrangements of the channels 7, 15 and 26 are also possible. For example, the second channel 15 could run or be arranged laterally or above the lance body 3. The same also applies to the sub-channels 33 and 34 of the first channel 7 following second adjusting means arrangement 29. The first and second sub-channels 33 and 34 can also be arranged to run next to one another. It would also be possible to arrange or form the second channel 15 within the lance body 3.

Preferably, at least the first container 13 is held detachably on the lance body 3. However, it would also be possible to keep the first container 13 separate from the lance 1, in particular on the operator of the lance 1. For example, the first container 13 could be carried by the operator on his back and/or on a belt. Another possibility would be to carry the first container 13 to the place of use and to place it there on the ground separately from the lance 1. The second channel 15 forms the connecting line between the first container 13 and the first nozzle body 19.

The exemplary embodiments show possible embodiment variants, whereby it should be noted at this point that the invention is not limited to the specifically illustrated embodiment variants, but rather various combinations of the individual embodiment variants with one another are possible and this variation possibility is based on the teaching on technical action through the subject invention Skills of the specialist working in this technical field.

The scope of protection is determined by the claims. However, the description and drawings must be used to interpret the claims. Individual features or combinations of features from the different exemplary embodiments shown and described can represent independent inventive solutions in their own right. The task underlying the independent inventive solutions can be found in the description.

All information on value ranges in this description should be understood to include any and all sub-ranges, e.g. the information 1 to 10 should be understood to include all sub-ranges, starting from the lower limit 1 and the upper limit 10 , that is, all subranges begin with a lower limit of 1 or greater and end with an upper limit of 10 or less, for example 1 to 1.7, or 3.2 to 8.1, or 5.5 to 10.

For the sake of order, it should finally be pointed out that in order to better understand the structure, elements have sometimes been shown out of scale and/or enlarged and/or reduced in size. <b>Reference symbol list</b> 1 lance 31 control pin 2 first additive 32 breakthrough 3 Lance body 33 first sub-channel 4 Handle arrangement 34 second sub-channel 5 first grip 35 Deflector 6 second handle 36 Actuator group 7 first channel 37 first actuator 8th first channel inlet 38 second actuator 9 first channel outlet 39 enforcement 10 Supply line 40 Container opening 11 first actuator arrangement 41 Filter element 12 first adjusting means 42 third actuator 13 first container 43 Swivel arrangement 14 removal opening 44 Filling opening 15 second channel 45 further additives 16 second channel inlet 46 another container 17 second channel outlet 47 fourth channel 18 Nozzle arrangement 48 switching element 19 first nozzle body 49 Pressure source 20 second nozzle body 50 stop element 21 first inlet opening 51 separating organ 22 second inlet opening 23 Exhaust opening 24 Mixing chamber 25 Longitudinal axis 26 third channel 27 third channel inlet 28 third channel outlet 29 second adjusting device arrangement 30 second adjusting means

Claims (24)

1. A lance (1), in particular for optionally dispensing a pressurized fluid or for jointly dispensing a mixture of the pressurized fluid and at least one additive (2, 45), comprising

   - a lance body (3),

   - a handle arrangement (4), which handle arrangement (4) is arranged or formed on the lance body (3) and comprises a first handle (5) and a second handle (6), wherein the two handles (5, 6) are arranged at a distance from one another in the direction of the longitudinal extension of the lance body (3), and wherein every handle (5, 6) can each be grasped by one hand of a user for operating the lance (1),

   - at least one first channel (7) with a first channel inlet (8) and a first channel outlet (9), wherein the first channel inlet (8) can be connected to a feed line (10) of the pressurized fluid,

   - a first actuating means arrangement (11), which first actuating means arrangement (11) is arranged in the region of the first handle (5) of the handle arrangement (4), and a first actuating means (12) is in direct operative connection to the first channel (7), wherein the first actuating means (12) can be adjusted from a locked position to a flow position and vice versa and thus, the flow of the pressurized fluid through the first channel (7) can be adjusted,

   - at least one first container (13) with at least one removal opening (14), wherein the first additive (2) can be accommodated in the first container (13),

   - at least one second channel (15) with a second channel inlet (16) and a second channel outlet (17), wherein the second channel inlet (16) is flow-connected to the at least one removal opening (14) of the first container (13),

   - a second actuating means arrangement (29), which second actuating means arrangement (29) comprises at least a second actuating means (30), wherein the second actuating means (30) can be adjusted from a closed position into a release position and vice versa and thus, the flow of the first additive (2) through the second channel (15) can be adjusted,

   - a nozzle arrangement (18) with a first nozzle body (19), wherein at least one first inlet opening (21), one second inlet opening (22), at least one outlet opening (23), and a mixing chamber (24) are formed or arranged in the first nozzle body (19), and wherein the inlet openings (21, 22) open into the mixing chamber (24), and the mixing chamber (24) is flow-connected to the at least one outlet opening (23),

   - wherein the first channel outlet (9) of the first channel (7) is flow-connected to the at least one first inlet opening (21) of the first nozzle body (19), and

   - wherein the second channel outlet (17) of the second channel (15) is flow-connected to the second inlet opening (22) of the first nozzle body (19), characterized in that

   - the second actuating means arrangement (29) comprises a control pin (31), which control pin (31) is mounted on the lance body (3) so as to be pivotable about its longitudinal axis, and that the second handle (6) of the handle arrangement (4) is rotationally coupled to the control pin (31) of the second actuating means arrangement (29), in particular the second handle (6) and the control pin (31) are formed in one piece, and the second handle (6) and the control pin (31) are jointly pivotable about their longitudinal axis,

   - the at least one second actuating means (30) of the second actuating means arrangement (29) is arranged in the control pin (31),

   - at least one third channel (26) with a third channel inlet (27) and a third channel outlet (28) is provided, and the third channel inlet (27) is flow-connected to the outer environment,

   - the at least one first channel (7) and the at least one third channel (26) are arranged or formed in the lance body (3),

   - the third channel outlet (28) of the third channel (26) is directly flow-connected to the at least one first inlet opening (21) of the first nozzle body (19),

   - the second actuating means (30) of the second actuating means arrangement (29) is in direct operative connection to the third channel (26), and the second actuating means arrangement (29) is arranged in the region of the second handle (6),

   - the third channel (26) is continuously open between its third channel inlet (27) and its third channel outlet (28) when the second actuating means (30) is in the release position, and thus, a flow of ambient air through the third channel (26) to the mixing chamber (24) is made possible, and

   - the third channel (26) is closed between its third channel inlet (27) and its third channel outlet (28) when the second actuating means (30) is in the closed position, and thus, a flow of ambient air through the third channel (26) to the mixing chamber (24) is prevented, and in this operating mode, the first additive (2) can be sucked into the mixing chamber (24) from the first container (13) via the second channel (15), and

   - the first channel (7) comprises a first partial channel (33) and a second partial channel (34) in its longitudinal section between the second actuating means arrangement (29) and the first channel outlet (9), and the first partial channel (33) is arranged inside the second partial channel (34).
2. The lance (1) according to claim 1, characterized in that the second channel (15) is formed by a separate connecting line, and the connecting line is arranged so as to extend outside the lance body (3) or inside the lance body (3).
3. The lance (1) according to claim 1, characterized in that the second actuating means (30) of the second actuating means arrangement (29) is formed by a through hole (32), in particular by at least one bore, passing through the control pin (31) in the radial direction.
4. The lance (1) according to one of the preceding claims, characterized in that the second actuating means arrangement (29) moreover comprises a third actuating means (42), and the third actuating means (42) is in direct operative connection to the second channel (15), wherein the third actuating means (42) is adjustable out of a closed position into a release position and vice versa and thus, the flow of the first additive (2) through the second channel (15) can be adjusted directly.
5. The lance (1) according to claim 4, characterized in that the third channel (26) is closed when the second actuating means (30) is in the closed position and the third actuating means (42) is in its release position, and the second channel (15) is continuously open, or that the third channel (26) is continuously open when the second actuating means (30) is in the release position and the third actuating means (42) is in its closed position and the second channel (15) is closed.
6. The lance (1) according to claim 4 or 5, characterized in that the second actuating means (30) and the third actuating means (42) of the second actuating means arrangement (29) are arranged at a distance from one another in the axial direction of the control pin (31) and offset from one another when viewed in the circumferential direction.
7. The lance (1) according to one of the preceding claims, characterized in that a second nozzle body (20) is provided, which second nozzle body (20) is arranged upstream of the first nozzle body (19) in the flow direction of the pressurized fluid, and the first channel outlet (9) of the first channel (7) is arranged or formed in the second nozzle body (20).
8. The lance (1) according to claim 7, characterized in that the third channel (26) is also arranged or formed in the second nozzle body (20).
9. The lance (1) according to one of the preceding claims, characterized in that the first nozzle body (19) of the nozzle arrangement (18) is removably held on the lance body (3), in particular removably held on the second nozzle body (20).
10. The lance (1) according to claim 1, characterized in that the first partial channel (33) ends before the first channel outlet (9), as viewed in the axial direction, and opens into the second partial channel (34) surrounding the first partial channel (33), and moreover at least an end section of the first partial channel (33) is arranged with respect to the first channel outlet (9) in an aligning orientation thereto.
11. The lance (1) according to one of the preceding claims, characterized in that the second actuating means arrangement (29) further comprises an actuating means group (36) with at least one first actuator member (37) and one second actuator member (38), which actuator members (37, 38) of the actuating means group (36) are in direct operative connection to the first channel (7).
12. The lance (1) according to claim 11, characterized in that the actuator members (37, 38) of the actuating means group (36) are each formed by a breakthrough (39), in particular are each formed by at least one bore, passing through the control pin (31) in the radial direction.
13. The lance (1) according to claim 11 or 12, characterized in that the actuator members (37, 38) of the actuating means group (36) are arranged at a distance from one another in the axial direction and circumferentially offset, by an offset angle, from one another when viewed in the circumferential direction, and optionally only one of the actuator members (37, 38) at a time makes the flow of the pressurized fluid possible.
14. The lance (1) according to one of claims 11 to 13, characterized in that the first actuator member (37) of the actuating means group (36) is in direct operative connection to the first partial channel (33), and the second actuator member (38) of the actuating means group (36) is in direct operative connection to the second partial channel (34).
15. The lance (1) according to one of claims 11 to 14, characterized in that the third channel (26) is closed when the second actuating means (30) is in the closed position, and simultaneously, the flow connection between the first channel (7) and the first partial channel (33) is established by means of the at least one first actuator member (37), and moreover the flow connection between the first channel (7) and the second partial channel (34) is interrupted by means of the second actuator member (38).
16. The lance (1) according to one of claims 11 to 15, characterized in that the third channel (26) is continuously open when the second actuating means (30) is in the release position, and simultaneously, the flow connection between the first channel (7) and the first partial channel (33) is established by means of the at least one first actuator member (37), and moreover the flow connection between the first channel (7) and the second partial channel (34) is interrupted by means of the second actuator member (38).
17. The lance (1) according to one of claims 11 to 16, characterized in that, when the first nozzle body (19) is removed and the third channel (26) is closed when the second actuating means (30) is in the closed position, and simultaneously, the flow connection between the first channel (7) and the first partial channel (33) is interrupted by means of the at least one first actuator member (37), and moreover the flow connection between the first channel (7) and the second partial channel (34) is established by means of the second actuator member (38).
18. The lance (1) according to one of the preceding claims, characterized in that a further container (46) for a further additive (45) to be accommodated therein is provided, and the further container (46) is flow-connected to the second actuating means arrangement (29) and further to the third channel (26) via a fourth channel (47).
19. The lance (1) according to one of the preceding claims, characterized in that the first container (13) and/or at least one of the containers (13, 46) is removably held on the lance body (3).
20. The lance (1) according to one of the preceding claims, characterized in that a pivot arrangement (43) is provided, by means of which pivot arrangement (43) at least the first container (13) is held so as to be pivotable on the lance body (3).
21. The lance (1) according to one of the preceding claims, characterized in that at least one container opening (40) is provided, which at least one container opening (40) opens into a container interior of the container (13, 46).
22. The lance (1) according to claim 21, characterized in that the container interior is flow-connected to the outer environment via the container opening (40), and at least one filter element (41) is arranged in the container opening (40).
23. The lance according to claims 11 and 18, characterized in that at least the further container (46) is provided and the second actuating means arrangement (29) further comprises the third actuating means (42), wherein, in a first operating position of the second actuating means arrangement (29), the third actuating means (42) and the first actuator member (37) of the actuating means group (36) are each in their respective release position, and the second actuating means (30) is in its closed position, and the third channel (26) is closed, and wherein, in a second operating position of the second actuating means arrangement (29), the first actuator member (37) of the actuating means group (36) and the second actuating means (30) are each in their respective release position, and the third actuating means (42) is in its closed position, and the second channel (15) is closed.
24. The lance (1) according to one of the preceding claims, characterized in that the additive (2, 45) is selected from the group of solid granulate material, extinguishing powder, extinguishing additive, foaming agent, dry ice, decontamination agent.

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