EP0512392B1 - Sludge suction vehicle - Google Patents

Sludge suction vehicle Download PDF

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Publication number
EP0512392B1
EP0512392B1 EP92107303A EP92107303A EP0512392B1 EP 0512392 B1 EP0512392 B1 EP 0512392B1 EP 92107303 A EP92107303 A EP 92107303A EP 92107303 A EP92107303 A EP 92107303A EP 0512392 B1 EP0512392 B1 EP 0512392B1
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EP
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Prior art keywords
tank
pressure pump
sludge suction
vehicle according
suction vehicle
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EP92107303A
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German (de)
French (fr)
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EP0512392A1 (en
Inventor
Georg Klass
Helmut Jun. Sinz
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    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F7/00Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
    • E03F7/10Wheeled apparatus for emptying sewers or cesspools

Definitions

  • the invention relates to a sludge suction vehicle with a high-pressure pump for generating a cleaning jet; a suction device for extracting slurries generated by the cleaning jet; a collection and clarification container connected to the suction device for the extracted slurries; a treatment device connected to the collection and clarification tank for the treatment of roughly clarified liquid from the collection and clarification tank, the treatment device being connectable to the high pressure pump for supplying the high pressure pump with finely clarified liquid; and with a fresh water tank that can be connected to the high pressure pump for supplying the high pressure pump with fresh water.
  • Such a sludge suction vehicle is known from DE 27 19 599 B1 and is preferably used in street cleaning for cleaning sewage locks and sewers.
  • Such a sludge suction truck largely covers its flushing water requirement for generating a cleaning jet from the high-pressure pump from the sludge water supply in the collection and clarification container.
  • This means that the sludge suction vehicle is independent of a fresh water source over a long period of operation.
  • the amount of finely clarified liquid that can be released by the treatment device to the high-pressure pump decreases, so that at some point during operation to supply the high-pressure pump with fresh water from the fresh water tank must become. It may also be the case that fresh water has to be used as rinsing water instead of treated sludge water for certain cleaning work.
  • the sludge suction vehicle according to the invention is characterized in that the treatment system is connected to an inlet of the high pressure pump via a ventilation device arranged above the treatment system and the high pressure pump and having a ventilation opening; that the ventilation device comprises a ventilation tank with a float device through which a connecting line to the high-pressure pump can be shut off when the liquid level in the tank is lowered, and that the fresh water tank can be connected to the inlet of the high-pressure pump via a non-return valve that opens when the connecting line is blocked and the high-pressure pump opens under suction .
  • This solution according to the invention avoids a cavitation run of the high-pressure pump, in that the connecting line to the high-pressure pump is initially shut off during start-up until a sufficient amount of finely clarified liquid has accumulated in the ventilation tank while venting the processing device and the connecting line, and the float device prevents the suction effect of the High-pressure pump has been lifted, lifting the blocking of the connecting line.
  • the check valve was open while the connecting line was shut off, so that the high-pressure pump was supplied with liquid from the fresh water tank during this time.
  • a switchover of the supply of the high-pressure pump with rinsing water from the treatment device back to the fresh water tank takes place automatically when the treatment device can no longer convey enough finely clarified water so that the liquid level in the breather tank drops so much that the connecting line between the breather tank and the high-pressure pump is blocked off by the float device.
  • the check valve opens immediately while avoiding a cavitation run and the continued supply of the high-pressure pump with rinsing water from the fresh water tank is ensured.
  • the venting container has a clarifying volume for further clarification of the liquid supplied by the processing device by settling very small dirt particles, for example smaller than 25 »m, which cannot be separated in the processing device.
  • the venting container can advantageously be mounted on the sludge suction vehicle in a vibration-insulated manner.
  • the supply of liquid from the preparation device into the venting container is expediently carried out using flow guiding devices in such a way that a laminar flow of the amount of flushing water flowing through also arises in the venting container near the inlet region of the liquid.
  • a laminar flow promotes the settling of dirt particles in that there is no whirling up of already settled or settling dirt particles.
  • a return line branching off from a line for the cleaning jet which leads into a connecting line between the processing device and the ventilation tank and is provided with a safety and switching valve, can be provided.
  • This return line means that the high-pressure pump does not have to be switched off if work with the cleaning jet is interrupted. If a tap is closed at the end of the line for the cleaning jet or a blockage occurs at an outlet nozzle, the liquid conveyed by the high pressure pump returns via the branching line back into the flushing liquid circuit, the safety and switching valve for a pressure drop and line 36 being released the confluence ensure an adjustment of the flow velocities of the liquid from the treatment device and the line 30. So that the rinsing liquid occurs unchanged Velocity into the breather tank, and there is no swirling of the rinsing liquid in the breather tank when using this return line.
  • FIG. 1 shows an exemplary embodiment of the device parts of an inventive sludge suction vehicle which are essential to the invention.
  • reference number 1 denotes a container mounted on a vehicle (not shown), which is divided by a partition 2 into a volume 4 used as a collecting and clarifying container and into a volume 3 used as a fresh water container.
  • a sludge suction line 13 with a valve 14 arranged therein opens into the collecting and clarifying tank 4. Furthermore, the collecting and clarifying tank 4 is connected via a line 34 to a pump 15 for generating a negative pressure in the tank.
  • Reference number 5 denotes a sludge liquid collected in the container 4, from which solid dirt particles 7 have settled.
  • the collecting and clarifying container 4 has a separate volume 33 which is separated from the remaining volume of the collecting container 4 by walls 28 which have openings. The openings in the walls 28 are dimensioned so that very coarse dirt particles are prevented from entering the partial volume 33.
  • a treatment device is generally designated by the reference numeral 8 and is connected to the collecting and clarifying tank 4 via a connecting line 11, the connecting line 11 being closed off from the partial volume 33 of the collecting and clarifying tank 4.
  • the treatment device 8 has a pump 10 and a flow separator 9, which in the present exemplary embodiment consists of a combination of a cyclone with a crossflow filter arranged therein.
  • the flow separator 9 is connected to the collection and clarification tank 4 via a return line 12 for the return of liquid enriched with dirt load into the collection and clarification tank 4.
  • An outlet of the flow separator 9 for treated liquid is connected via a connecting line 36 to a ventilation tank 37, a flow guiding device 32 being provided at the entry point of the connecting line 36 into the ventilation tank 37, which in the present exemplary embodiment consists of a block having a plurality of narrow flow channels .
  • the venting container 37 which in the present exemplary embodiment extends approximately over the length of the container 1 and is arranged on the container 1, has a clarifying volume 27 in which the rinsing liquid supplied by the treatment device can be clarified even further by settling dirt particles.
  • a dirt particle deposit or a liquid layer with an enriched dirt load is designated by 26 at the bottom of the clarifying volume 27.
  • the venting container 37 is supported against the container 1 in a vibration-insulated manner on a bearing element 35 having a spring. 22 denotes a float arranged opposite the entry point of the connecting line 36. The float 22 is guided and closed by guide devices (not shown in FIG.
  • the openings 23 and 24 can, for example, have flanges that can be placed against the walls of the float to form large sealing surfaces. Accordingly, the float walls could be designed to form large sealing surfaces and, for example, have annular depressions for the engagement of annular connection line ends.
  • the reference numeral 40 designates a return line for the return of liquid enriched with dirt particles from the ventilation tank 37 into the collecting and clarifying tank 4.
  • a device 16 for regulating the flow rate is arranged in this return line 40.
  • a flushing inlet 25 is provided on the side of the venting container 37 opposite the exit point of the line 40 and the entry point of the connecting line 36, through which an external flushing jet according to arrow 39 can be directed to flush the volume 27 of the venting container 37.
  • the reference numeral 21 denotes a connecting line connected to the fresh water tank 3 with a fresh water amount 6, which opens into the connecting line 17 between the vent tank 37 and the high pressure pump 18.
  • a valve 20, a filter 41 and a check valve 19 are provided in the connecting line 21.
  • a line 31 connects to the high-pressure pump 18, in the present exemplary embodiment a piston pump, for a line generated by the high-pressure pump 18 Cleaning jet on.
  • the line 31 can be provided at its open end with a nozzle (not shown in FIG. 1) and a shut-off valve.
  • a line 30 branches off from the line 31 and opens into the line 36 between the pure water outlet of the flow separator 9 and the ventilation tank 37.
  • a safety and switching valve 29 with a variable flow cross section is provided in line 30.
  • the treatment device 8 When the device shown in FIG. 1 is started up, the treatment device 8, the venting container 37, the high-pressure pump 18 and the corresponding connecting lines are initially still empty and the opening 24 of the connecting line 17 is closed by the float 22 in the venting container 37.
  • the check valve 19 opens immediately, so that the high-pressure pump 18 is supplied with fresh water 6 from the fresh water tank 3 while avoiding cavitation.
  • the check valve 19 closes due to the pressure of the flushing liquid from the venting container built up in the connecting line, and the high-pressure pump draws flushing liquid from the venting container 37, which is supplied with flushing liquid by the treatment device 8.
  • the normal operating state is thus reached, in which the high-pressure pump takes its rinsing water from the collecting and clarifying tank 4.
  • 13 slurries are sucked into the collecting and clarifying tank 4 via the suction line, which slurries were generated by the cleaning jet from the high-pressure pump 18.
  • the suction of the slurries takes place in that a vacuum is generated by the pump 15 in the collecting and clarifying tank 4.
  • the liquid level in the volume 27 of the ventilation container 37 rises or falls. If more rinsing liquid is supplied than is removed by the high-pressure pump, the float 22 rises further until it closes the opening 23 of the vent tube 38. Excess liquid volume can now be returned via line 40 to the collecting and clarifying tank 4, the line 40 advantageously being connected to the venting tank 37 in such a way that liquid enriched with dirt particles is returned to the collecting and clarifying tank 4.
  • the flow control 16 is arranged in the return line 40.
  • venting container 37 can be cleaned by an external flushing jet 39 which is sent through the flushing inlet 25.
  • the amount of treated rinsing liquid that can be generated by the processing device 8 decreases due to increasing dirt concentration in the collecting and clarifying tank 4, the liquid level in the volume 27 of the ventilation tank 37 drops until the opening 24 of the connecting line 17 through the float 22 is closed. This results in a pressure drop in the line 17, which leads to an opening of the check valve 19 and thus, while avoiding cavitation, to an immediate further supply of the high-pressure pump 18 with rinsing water from the fresh water tank 3.
  • work with the cleaning jet can be interrupted in that a shut-off valve at the end of line 31 is closed for the cleaning jet.
  • the rinsing water conveyed by the pump 18 can then be returned to the rinsing water circuit via line 30.
  • the safety and switching valve 29 ensures that the liquid flowing through line 30 is matched with respect to the pressure and flow velocity of the liquid flowing through line 36 from the processing device 8.
  • the liquid conveyed by the pump 18 can thus be returned to the ventilation container 37 without disadvantageously changing the flow conditions in the ventilation container 37. This return advantageously prevents the high-pressure pump 18 from being switched off when work with the cleaning jet is interrupted and the system having to be restarted.

Abstract

The invention relates to a vacuum cesspool cleaner, in which the rinse water for a cleaning jet produced by a high-pressure pump (18) is largely taken from a holding tank (4), which receives the suspensions generated by the cleaning jet. In this process, the liquid supplied to the high-pressure pump (18) is taken from a conditioning appliance (8) provided between the holding tank (4) and the high-pressure pump (18), or from a fresh-water tank (3) carried additionally. An improvement according to the invention is provided by a deaeration tank (37), which is located above the conditioning appliance (8) and the high-pressure pump (18) and which has a float (22) which closes a connecting line (36) to the high-pressure pump (18) if the liquid level in the tank is insufficient, and is further provided by a non-return valve (19), which is located between the high-pressure pump (18) and the fresh-water tank (3) connected thereto and which opens if the connecting line (36) is closed, supplying the high-pressure pump (18) with liquid from the fresh-water tank (3). <IMAGE>

Description

Die Erfindung betrifft einen Schlammsaugwagen mit einer Hochdruckpumpe zur Erzeugung eines Reinigungsstrahls; einer Absaugeinrichtung zum Absaugen von durch den Reinigungsstrahl erzeugten Aufschlämmungen; einem mit der Absaugeinrichtung verbundenen Sammel- und Klärbehälter für die abgesaugten Aufschlämmungen; einer an den Sammel- und Klärbehälter angeschlossenen Aufbereitungseinrichtung zur Aufbereitung von grob geklärter Flüssigkeit aus dem Sammel- und Klärbehälter, wobei die Aufbereitungseinrichtung mit der Hochdruckpumpe zur Speisung der Hochdruckpumpe mit fein geklärter Flüssigkeit verbindbar ist; und mit einem mit der Hochdruckpumpe zur Speisung der Hochdruckpumpe mit Frischwasser verbindbaren Frischwasserbehälter.The invention relates to a sludge suction vehicle with a high-pressure pump for generating a cleaning jet; a suction device for extracting slurries generated by the cleaning jet; a collection and clarification container connected to the suction device for the extracted slurries; a treatment device connected to the collection and clarification tank for the treatment of roughly clarified liquid from the collection and clarification tank, the treatment device being connectable to the high pressure pump for supplying the high pressure pump with finely clarified liquid; and with a fresh water tank that can be connected to the high pressure pump for supplying the high pressure pump with fresh water.

Ein derartiger Schlammsaugwagen ist aus der DE 27 19 599 B1 bekannt und wird vorzugsweise bei der Straßenreinigung zum Säubern von Abwasserschleusen und -kanälen eingesetzt.Such a sludge suction vehicle is known from DE 27 19 599 B1 and is preferably used in street cleaning for cleaning sewage locks and sewers.

Ein solcher Schlammsaugwagen deckt seinen Spülwasserbedarf zur Erzeugung eines Reinigungsstrahls durch die Hochdruckpumpe weitgehend aus dem Schlammwasservorrat in dem Sammel- und Klärbehälter. Damit ist der Schlammsaugwagen über einen langen Betriebszeitraum unabhängig von einer Frischwasserquelle. Mit zunehmender Schmutzkonzentration im Schlammwasser nimmt jedoch die Menge an fein geklärter Flüssigkeit, die durch die Aufbereitungseinrichtung an die Hochdruckpumpe abgegeben werden kann, ab, so daß irgendwann während des Betriebs zur Versorgung der Hochdruckpumpe mit Frischwasser aus dem Frischwasserbehälter übergegangen werden muß. Es kann auch der Fall vorliegen, daß für bestimmte Reinigungsarbeiten von vornherein statt aufbereitetem Schlammwasser Frischwasser als Spülwasser verwendet werden muß.Such a sludge suction truck largely covers its flushing water requirement for generating a cleaning jet from the high-pressure pump from the sludge water supply in the collection and clarification container. This means that the sludge suction vehicle is independent of a fresh water source over a long period of operation. With increasing dirt concentration in the sludge water, however, the amount of finely clarified liquid that can be released by the treatment device to the high-pressure pump decreases, so that at some point during operation to supply the high-pressure pump with fresh water from the fresh water tank must become. It may also be the case that fresh water has to be used as rinsing water instead of treated sludge water for certain cleaning work.

Bei einer Inbetriebnahme des Schlammsaugwagens, wenn die Aufbereitungseinrichtung, die Hochdruckpumpe und die Verbindungsleitungen zwischen der Aufbereitungseinrichtung und der Hochdruckpumpe bzw. dem Sammel- und Klärbehälter noch leer sind, muß die darin enthaltene Luft über die Hochdruckpumpe abgeführt werden. Dies führt zu starker Kavitation, und damit verbunden, zu starker Geräuschentwicklung und einem hohen Pumpenverschleiß. Ein solcher schädlicher Kavitationslauf tritt auch beim Umschalten von Spülwasser auf Frischwaser auf.When the sludge suction vehicle is started up, when the treatment device, the high-pressure pump and the connecting lines between the treatment device and the high-pressure pump or the collection and clarification container are still empty, the air contained therein must be removed via the high-pressure pump. This leads to strong cavitation and, associated with this, to a lot of noise and high pump wear. Such a harmful cavitation run also occurs when switching from rinsing water to fresh water.

Es ist die Aufgabe der vorliegnden Erfindung, einen Schlammsaugwagen der eingangs erwähnten Art vorzuschlagen, der gegenüber dem aus dem Stand der Technik bekannten Schlammsaugwagen dieser Art verbessert ist.It is the object of the present invention to propose a sludge suction vehicle of the type mentioned at the outset which is improved over the sludge suction vehicle of this type known from the prior art.

Der Schlammsaugwagen nach der Erfindung ist dadurch gekennzeichnet, daß die Aufbereitungsanlage mit einem Eingang der Hochdruckpumpe über eine oberhalb der Aufbereitungsanlage und der Hochdruckpumpe angeordnete, eine Entlüftungsöffnung aufweisende Entlüftungseinrichtung verbunden ist; daß die Entlüftungseinrichtung einen Entlüftungsbehälter mit einer Schwimmereinrichtung, durch die eine Verbindungsleitung zu der Hochdruckpumpe bei Absenkung des Flüssigkeitsspiegels in dem Behälter absperrbar ist, umfaßt, und daß der Frischwasserbehälter mit dem Eingang der Hochdruckpumpe über ein bei gesperrter Verbindungsleitung unter Saugwirkung der Hockdruckpumpe öffnendes Rückschlagventil verbindbar ist.The sludge suction vehicle according to the invention is characterized in that the treatment system is connected to an inlet of the high pressure pump via a ventilation device arranged above the treatment system and the high pressure pump and having a ventilation opening; that the ventilation device comprises a ventilation tank with a float device through which a connecting line to the high-pressure pump can be shut off when the liquid level in the tank is lowered, and that the fresh water tank can be connected to the inlet of the high-pressure pump via a non-return valve that opens when the connecting line is blocked and the high-pressure pump opens under suction .

Durch diese erfindungsgemäße Lösung wird ein Kavitationslauf der Hochdruckpumpe vermieden, indem bei einer Inbetriebnahme die Verbindungsleitung zu der Hochdruckpumpe zunächst abgesperrt ist, bis sich in dem Entlüftungsbehälter unter Entlüftung der Aufbereitungseinrichtung und der Verbindungsleitung genügend viel fein geklärte Flüssigkeit angesammelt hat und die Schwimmereinrichtung gegen die Saugwirkung der Hochdruckpumpe unter Aufhebung der Sperrung der Verbindungsleitung angehoben worden ist. Während die Verbindungsleitung abgesperrt war, war das Rückschlagventil geöffnet, so daß die Hochdruckpumpe während dieser Zeit mit Flüssikgeit aus dem Frischwasserbehälter versorgt wurde. Eine Umschaltung der Versorgung der Hochdruckpumpe mit Spülwasser von der Aufbereitungseinrichtung wieder zu dem Frischwasserbehälter erfolgt automatisch dann, wenn die Aufbereitungseinrichtung nicht mehr genügend fein geklärtes Wasser fördern kann, so daß der Flüssigkeitsspiegel im Entlüftungsbehälter so weit absinkt, daß die Verbindungsleitung zwischen dem Entlüftungsbehälter und der Hochdruckpumpe durch die Schwimmereinrichtung abgesperrt wird. In diesem Fall öffnet unter Vermeidung von Kaviationslauf sofort das Rückschlagventil und die Weiterversorgung der Hochdruckpumpe mit Spülwasser aus dem Frischwasserbehälter ist gesichert.This solution according to the invention avoids a cavitation run of the high-pressure pump, in that the connecting line to the high-pressure pump is initially shut off during start-up until a sufficient amount of finely clarified liquid has accumulated in the ventilation tank while venting the processing device and the connecting line, and the float device prevents the suction effect of the High-pressure pump has been lifted, lifting the blocking of the connecting line. The check valve was open while the connecting line was shut off, so that the high-pressure pump was supplied with liquid from the fresh water tank during this time. A switchover of the supply of the high-pressure pump with rinsing water from the treatment device back to the fresh water tank takes place automatically when the treatment device can no longer convey enough finely clarified water so that the liquid level in the breather tank drops so much that the connecting line between the breather tank and the high-pressure pump is blocked off by the float device. In this case, the check valve opens immediately while avoiding a cavitation run and the continued supply of the high-pressure pump with rinsing water from the fresh water tank is ensured.

In vorteilhafter Ausgestaltung der Erfindung weist der Entlüftungsbehälter ein Klärvolumen zur weiteren Klärung der von der Aufbereitungseinrichtung gelieferten Flüssigkeit durch Absetzen von sehr kleinen Schmutzteilchen, zum Beispiel kleiner als 25 »m die in der Aufbereitungseinrichtung nicht abgeschieden werden können, auf. Durch diese weitere Klärung in dem Entlüftungsbehälter, von dessen Innenvolumen die Schwimmereinrichtung im Vergleich zu dem Klärvolumen nur einen kleinen Teil einnimmt, ergibt sich durch die höhere Reinheit des Spülwassers ein zusätzlich verringerter Verschleiß der Hochdruckpumpe. Um Flüssigkeitsbewegungen innerhalb des Klärvolumens weitgehend zu vermeiden und damit das Absetzen von Schmutzteilchen zur weiteren Klärung der Flüssigkeit zu fördern, kann der Entlüftungsbehälter vorteilhaft schwingungsisoliert auf dem Schlammsaugwagen gehaltert sein. Die Zuführung von Flüssigkeit aus der Aufbereitungseinrichtung in den Entlüftungsbehälter erfolgt zweckmäßig unter Verwendung von Strömungsleiteinrichtungen derart, daß in dem Entlüftungsbehälter auch nahe dem Eintrittsbereich der Flüssigkeit eine laminare Strömung der durchlaufenden Spülwassermenge entsteht. Eine solche laminare Strömung fördert das Absetzen von Schmutzteilchen, indem keine Aufwirbelung bereits abgesetzter oder sich absetzender Schmutzteilchen erfolgt.In an advantageous embodiment of the invention, the venting container has a clarifying volume for further clarification of the liquid supplied by the processing device by settling very small dirt particles, for example smaller than 25 »m, which cannot be separated in the processing device. This further clarification in the venting tank, of which the float device occupies only a small part of the internal volume compared to the clarification volume, results in the higher purity of the Flushing water an additional reduced wear of the high pressure pump. In order to largely avoid liquid movements within the clarification volume and thus to promote the settling of dirt particles for further clarification of the liquid, the venting container can advantageously be mounted on the sludge suction vehicle in a vibration-insulated manner. The supply of liquid from the preparation device into the venting container is expediently carried out using flow guiding devices in such a way that a laminar flow of the amount of flushing water flowing through also arises in the venting container near the inlet region of the liquid. Such a laminar flow promotes the settling of dirt particles in that there is no whirling up of already settled or settling dirt particles.

In weiterer vorteilhafter Ausgestaltung der Erfindung kann ausgangsseitig zu der Hochdruckpumpe eine von einer Leitung für den Reinigungsstrahl abzweigende Rückführungsleitung, die in eine Verbindungsleitung zwischen der Aufbereitungseinrichtung und dem Entlüftungsbehälter einmündet und mit einem Sicherheits- und Schaltventil versehen ist, vorgesehen sein. Durch diese Rückführungsleitung braucht die Hochdruckpumpe nicht abgeschaltet zu werden, wenn die Arbeit mit dem Reinigungsstrahl unterbrochen wird. Wenn ein Hahn am Ende der Leitung für den Reinigungsstrahl geschlossen wird oder eine Verstopfung an einer Austrittsdüse auftritt, tritt die durch die Hochdruckpumpe geförderte Flüssigkeit über die abzweigende Leitung zurück in den Spülflüssigkeitskreislauf, wobei das Sicherheits- und Schaltventil für einen Druckabfall und die Leitung 36 ab der Einmündung für eine Angleichung der Strömungsgeschwindigkeiten der Flüssigkeit aus der Aufbereitungseinrichtung und der Leitung 30 sorgen. Damit tritt die Spülflüssigkeit mit unveränderter Geschwindigkeit in den Entlüftungsbehälter ein, und es kommt bei der Benutzung dieser Rückführungsleitung nicht zu einer Aufwirbelung der Spülflüssigkeit in dem Entlüftungsbehälter.In a further advantageous embodiment of the invention, on the output side of the high-pressure pump, a return line branching off from a line for the cleaning jet, which leads into a connecting line between the processing device and the ventilation tank and is provided with a safety and switching valve, can be provided. This return line means that the high-pressure pump does not have to be switched off if work with the cleaning jet is interrupted. If a tap is closed at the end of the line for the cleaning jet or a blockage occurs at an outlet nozzle, the liquid conveyed by the high pressure pump returns via the branching line back into the flushing liquid circuit, the safety and switching valve for a pressure drop and line 36 being released the confluence ensure an adjustment of the flow velocities of the liquid from the treatment device and the line 30. So that the rinsing liquid occurs unchanged Velocity into the breather tank, and there is no swirling of the rinsing liquid in the breather tank when using this return line.

Weitere vorteilhafte Ausgestaltungsmöglichkeiten der Erfindung gehen aus den Unteransprüchen hervor.Further advantageous design options of the invention emerge from the subclaims.

Die Erfindung soll nun anhand eines Ausführungsbeispiels und der sich auf dieses Ausführungsbeispiel beziehenden Zeichnung näher erläutert und beschrieben werden.The invention will now be explained and described in more detail using an exemplary embodiment and the drawing relating to this exemplary embodiment.

Die Fig. 1 zeigt ein Ausführungsbeispiel für die erfindungswesentlichen Vorrichtungsteile eines erfindungsgemäßen Schlammsaugwagens.1 shows an exemplary embodiment of the device parts of an inventive sludge suction vehicle which are essential to the invention.

In der Fig. 1 ist mit dem Bezugszeichen 1 ein auf einen (nicht gezeigten) Fahrzeug montierter Behälter bezeichnet, der durch eine Trennwand 2 in ein als Sammel- und Klärbehälter verwendetes Volumen 4 und in ein als Frischwasserbehälter verwendetes Volumen 3 unterteilt ist.In FIG. 1, reference number 1 denotes a container mounted on a vehicle (not shown), which is divided by a partition 2 into a volume 4 used as a collecting and clarifying container and into a volume 3 used as a fresh water container.

In den Sammel- und Klärbehälter 4 mündet eine Schlammsaugleitung 13 mit einem darin angeordneten Ventil 14 ein. Ferner ist der Sammel- und Klärbehälter 4 über eine Leitung 34 mit einer Pumpe 15 zur Erzeugung eines Unterdrucks in dem Behälter verbunden. Mit dem Bezugszeichen 5 ist eine in dem Behälter 4 gesammelte Schlammflüssigkeit bezeichnet, aus der sich feste Schmutzteilchen 7 abgesetzt haben. Der Sammel- und Klärbehälter 4 weist ein gesondertes Volumen 33 auf, das über Öffnungen aufweisende Wände 28 von dem übrigen Volumen des Sammelbehälters 4 getrennt ist. Die Öffnungen in den Wänden 28 sind so bemessen, daß sehr grobe Schmutzteilchen am Eintritt in das Teilvolumen 33 gehindert werden.A sludge suction line 13 with a valve 14 arranged therein opens into the collecting and clarifying tank 4. Furthermore, the collecting and clarifying tank 4 is connected via a line 34 to a pump 15 for generating a negative pressure in the tank. Reference number 5 denotes a sludge liquid collected in the container 4, from which solid dirt particles 7 have settled. The collecting and clarifying container 4 has a separate volume 33 which is separated from the remaining volume of the collecting container 4 by walls 28 which have openings. The openings in the walls 28 are dimensioned so that very coarse dirt particles are prevented from entering the partial volume 33.

Allgemein mit dem Bezugszeichen 8 ist eine Aufbereitungseinrichtung bezeichnet, die über eine Verbindungsleitung 11 mit dem Sammel- und Klärbehälter 4 verbunden ist, wobei die Verbindungsleitung 11 an das Teilvolumen 33 des Sammel- und Klärbehälters 4 abgeschlossen ist. Die Aufbereitungseinrichtung 8 weist eine Pumpe 10 und einen Strömungsabscheider 9 auf, der im vorliegenden Ausführungsbeispiel aus einer Kombination von einem Zyklon mit einem darin angeordnet Querstromfilter besteht. Der Strömungsabscheider 9 ist über eine Rückführungsleitung 12 für die Rückführung von mit Schmutzfracht angereicherter Flüssigkeit in den Sammel- und Klärbehälter 4 mit dem Sammel- und Klärbehälter 4 verbunden. Ein Ausgang des Strömungsabscheiders 9 für aufbereitete Flüssigkeit ist über eine Verbindungsleitung 36 mit einem Entlüftungsbehälter 37 verbunden, wobei an der Eintrittsstelle der Verbindungsleitung 36 in den Entlüftungsbehälter 37 eine Strömungsleiteinrichtung 32 vorgesehen ist, die im vorliegenden Ausführungsbeispiel aus einem eine Vielzahl von engen Strömungskanälen aufweisenden Block besteht.A treatment device is generally designated by the reference numeral 8 and is connected to the collecting and clarifying tank 4 via a connecting line 11, the connecting line 11 being closed off from the partial volume 33 of the collecting and clarifying tank 4. The treatment device 8 has a pump 10 and a flow separator 9, which in the present exemplary embodiment consists of a combination of a cyclone with a crossflow filter arranged therein. The flow separator 9 is connected to the collection and clarification tank 4 via a return line 12 for the return of liquid enriched with dirt load into the collection and clarification tank 4. An outlet of the flow separator 9 for treated liquid is connected via a connecting line 36 to a ventilation tank 37, a flow guiding device 32 being provided at the entry point of the connecting line 36 into the ventilation tank 37, which in the present exemplary embodiment consists of a block having a plurality of narrow flow channels .

Der sich im vorliegenden Ausführungsbeispiel etwa über die Länge des Behälters 1 erstreckende, auf dem Behälter 1 angeordnete Entlüftungsbehälter 37 weist ein Klärvolumen 27 auf, in dem die durch die Aufbereitungseinrichtung zugeführte Spülflüssigkeit noch weiter durch Absetzen von Schmutzteilchen geklärt werden kann. Mit 26 ist ein am Boden des Klärvolumens 27 abgesetzter Schmutzteilchenbelag bzw. eine Flüssigkeitsschicht mit angereicherter Schmutzfracht bezeichnet. Der Entlüftungsbehälter 37 ist auf einer Feder aufweisenden Lagerungselementen 35 schwingungsisoliert gegen den Behälter 1 gehaltert. Mit 22 ist ein der Eintrittsstelle der Verbindungsleitung 36 gegenüberliegend angeordneter Schwimmer bezeichnet. Der Schwimmer 22 ist durch in der Fig. 1 nicht gezeigte Führungseinrichtungen geführt und schließt bei Absenkung des Flüssigkeitsspiegels in dem Volumen 27 die Eingangsöffnung 24 einer Verbindungsleitung 17 zwischen dem Entlüftungsbehälter 37 und dem Eingang einer Hochdruckpumpe 18 ab. Bei genügend angestiegenem Flüssigkeitsspiegel in dem Volumen 27 schließt der Schwimmer einer der Öffnung 24 gegenüberliegenden Öffnung 23 einer Entlüftungsröhre 38 ab. Die Öffnungen 23 und 24 können zum Beispiel zur Bildung großer Dichtungsflächen gegen die Wände des Schwimmers anlegbare Anflanschungen aufweisen. Entsprechend könnten die Schwimmerwände zur Bildung großer Dichtungsflächen ausgestaltet sein und zum Beispiel ringförmige Vertiefungen für den Eingriff ringförmiger Verbindungleitungsenden aufweisen. Mit dem Bezugszeichen 40 ist eine Rückführleitung für die Rückführung von mit Schmutzteilchen angereicherter Flüssigkeit aus dem Entlüftungsbehälter 37 in den Sammel- und Klärbehälter 4 bezeichnet. In dieser Rückführleitung 40 ist eine Einrichtung 16 zur Regelung der Durchflußmenge angeordnet. Auf der der Austrittsstelle der Leitung 40 und der Eintrittsstelle der Verbindungsleitung 36 gegenüberliegenden Seite des Entlüftungsbehälters 37 ist ein Spüleinlaß 25 vorgesehen, durch den ein externer Spülstrahl entsprechend dem Pfeil 39 zur Durchspülung des Volumens 27 des Entlüftungsbehälters 37 gerichtet werden kann.The venting container 37, which in the present exemplary embodiment extends approximately over the length of the container 1 and is arranged on the container 1, has a clarifying volume 27 in which the rinsing liquid supplied by the treatment device can be clarified even further by settling dirt particles. A dirt particle deposit or a liquid layer with an enriched dirt load is designated by 26 at the bottom of the clarifying volume 27. The venting container 37 is supported against the container 1 in a vibration-insulated manner on a bearing element 35 having a spring. 22 denotes a float arranged opposite the entry point of the connecting line 36. The float 22 is guided and closed by guide devices (not shown in FIG. 1) when the liquid level in the volume 27 is lowered, the inlet opening 24 of a connecting line 17 between the vent container 37 and the inlet of a high-pressure pump 18. When the liquid level in the volume 27 has risen sufficiently, the float closes off an opening 23 of a ventilation tube 38 opposite the opening 24. The openings 23 and 24 can, for example, have flanges that can be placed against the walls of the float to form large sealing surfaces. Accordingly, the float walls could be designed to form large sealing surfaces and, for example, have annular depressions for the engagement of annular connection line ends. The reference numeral 40 designates a return line for the return of liquid enriched with dirt particles from the ventilation tank 37 into the collecting and clarifying tank 4. A device 16 for regulating the flow rate is arranged in this return line 40. A flushing inlet 25 is provided on the side of the venting container 37 opposite the exit point of the line 40 and the entry point of the connecting line 36, through which an external flushing jet according to arrow 39 can be directed to flush the volume 27 of the venting container 37.

Mit dem Bezugszeichen 21 ist eine an den Frischwasserbehälter 3 mit einer Frischwassermenge 6 angeschlossene Verbindungsleitung bezeichnet, die in die Verbindungsleitung 17 zwischen dem Entlüftungsbehälter 37 und der Hochdruckpumpe 18 einmündet. In der Verbindungsleitung 21 sind ein Ventil 20, ein Filter 41, sowie ein Rückschlagventil 19 vorgesehen.The reference numeral 21 denotes a connecting line connected to the fresh water tank 3 with a fresh water amount 6, which opens into the connecting line 17 between the vent tank 37 and the high pressure pump 18. A valve 20, a filter 41 and a check valve 19 are provided in the connecting line 21.

An die Hochdruckpumpe 18, im vorliegenden Ausführungsbeispiel eine Kolbenpumpe, schließt sich eine Leitung 31 für einen von der Hochdruckpupmpe 18 erzeugten Reinigungsstrahl an. Die Leitung 31 kann an ihrem offenen Ende mit einer in der Fig. 1 nicht gezeigten Düse und einem Absperrventil versehen sein.A line 31 connects to the high-pressure pump 18, in the present exemplary embodiment a piston pump, for a line generated by the high-pressure pump 18 Cleaning jet on. The line 31 can be provided at its open end with a nozzle (not shown in FIG. 1) and a shut-off valve.

Von der Leitung 31 zweigt eine Leitung 30 ab, die in die Leitung 36 zwischen dem Reinwasserausgang des Strömungsabscheiders 9 und dem Entlüftungsbehälter 37 einmündet. In der Leitung 30 ist ein Sicherheits- und Schaltventil 29 mit veränderbarem Durchflußquerschnitt vorgesehen.A line 30 branches off from the line 31 and opens into the line 36 between the pure water outlet of the flow separator 9 and the ventilation tank 37. A safety and switching valve 29 with a variable flow cross section is provided in line 30.

Bei einer Inbetriebnahme der in der Fig. 1 gezeigten Vorrichtung sind die Aufbereitungseinrichtung 8, der Entlüftungsbehälter 37, die Hochdruckpumpe 18 sowie die entsprechenden Verbindungsleitungen zunächst noch leer und die Öffnung 24 der Verbindungsleitung 17 ist durch den Schwimmer 22 in dem Entlüftungsbehälter 37 geschlossen. Bei Inbetriebnahme der Hochdruckpumpe 18 öffnet jedoch sofort das Rückschlagventil 19, so daß die Hochdruckpumpe 18 unter Vermeidung von Kavitation unmittelbar mit Frischwasser 6 aus dem Frischwasserbehälter 3 versorgt wird. Durch die gleichzeitig mit der Hochdruckpumpe 18 in Betrieb genommene Kreiselpumpe 10 gelangt fein geklärtes Wasser durch den Strömungsabscheider 9 über die Verbindungsleitung 36 in den Entlüftungsbehälter 37, wobei die in dem Strömungsabscheider 9, in der Verbindungsleitung 36, sowie in dem Entlüftungsbehälter 37 vorhandene Luft nach oben durch die Öffnung 23 am höchsten Punkt des Leitungssystems über die Röhre 38 aus dem Entlüftungsbehälter 37 austreten kann. Wenn sich der Flüssigkeitsspiegel von durch die Aufbereitungseinrichtung 8 aufbereiteter Flüssigkeit in dem Volumen 27 des Entlüftungsbehälters 37 genügend angehoben hat, hebt sich der Schwimmer 22 entgegen der Saugwirkung der Hochdruckpumpe 18 von der Öffnung 24 ab und gibt damit die Verbindungsleitung 17 zwischen dem Entlüftungsbehälter 37 und der Hochdruckpumpe 18 frei. Durch den in der Verbindungsleitung aufgebauten Druck der Spülflüssigkeit aus dem Entlüftungsbehälter schließt das Rückschlagventil 19 und die Hochdruckpumpe entnimmt Spülflüssigkeit aus dem Entlüftungsbehälter 37, welcher von der Aufbereitungseinrichtung 8 mit Spülflüssigkeit versorgt wird. Damit ist der normale Betriebszustand erreicht, in welchem die Hochdruckpumpe ihr Spülwasser dem Sammel- und Klärbehälter 4 entnimmt. Während des Betriebs werden über die Saugleitung 13 Aufschlämmungen in den Sammel- und Klärbehälter 4 eingesaugt, die durch den Reinigungsstrahl aus der Hochdruckpumpe 18 erzeugt wurden. Das Einsaugen der Aufschlämmungen erfolgt dadurch, daß durch die Pumpe 15 in dem Sammel- und Klärbehälter 4 ein Unterdruck erzeugt wird.When the device shown in FIG. 1 is started up, the treatment device 8, the venting container 37, the high-pressure pump 18 and the corresponding connecting lines are initially still empty and the opening 24 of the connecting line 17 is closed by the float 22 in the venting container 37. When the high-pressure pump 18 is started up, however, the check valve 19 opens immediately, so that the high-pressure pump 18 is supplied with fresh water 6 from the fresh water tank 3 while avoiding cavitation. Due to the centrifugal pump 10, which is put into operation simultaneously with the high-pressure pump 18, finely clarified water passes through the flow separator 9 via the connecting line 36 into the ventilation tank 37, the air present in the flow separator 9, in the connecting line 36 and in the ventilation tank 37 going upward through the opening 23 at the highest point of the pipe system via the tube 38 from the vent tank 37. When the liquid level of liquid treated by the treatment device 8 has risen sufficiently in the volume 27 of the venting container 37, the float 22 lifts against the suction effect of the high pressure pump 18 from the opening 24 and thus gives the connecting line 17 between the venting container 37 and the high pressure pump 18 free. The check valve 19 closes due to the pressure of the flushing liquid from the venting container built up in the connecting line, and the high-pressure pump draws flushing liquid from the venting container 37, which is supplied with flushing liquid by the treatment device 8. The normal operating state is thus reached, in which the high-pressure pump takes its rinsing water from the collecting and clarifying tank 4. During operation, 13 slurries are sucked into the collecting and clarifying tank 4 via the suction line, which slurries were generated by the cleaning jet from the high-pressure pump 18. The suction of the slurries takes place in that a vacuum is generated by the pump 15 in the collecting and clarifying tank 4.

Je nach Entnahme von Spülflüssigkeit durch die Hochdruckpumpe 18 und der durch die Aufbereitungseinrichtung 8 lieferbaren Menge an Spülflüssigkeit steigt oder sinkt der Flüssigkeitsspiegel in dem Volumen 27 des Entlüftungsbehälters 37. Wird mehr Spülflüssigkeit zugeliefert als durch die Hochdruckpumpe entnommen wird, so hebt sich der Schwimmer 22 weiter an, bis er die Öffnung 23 der Entlüftungsröhre 38 verschließt. Überschüssiges Flüssigkeitsvolumen kann nunmehr über die Leitung 40 in den Sammel- und Klärbehälter 4 zurückgeführt werden, wobei die Leitung 40 vorteilhaft so an den Entlüftungsbehälter 37 angeschlossen ist, daß vorrangig mit Schmutzteilchen angereicherte Flüssigkeit in den Sammel- und Klärbehälter 4 zurückgeführt wird. Um eine Anpassung an den wechselnden Druck in dem Sammel- und Klärbehälter vornehmen zu können, ist in der Rückführleitung 40 die Durchflußregelung 16 angeordnet.Depending on the removal of rinsing liquid by the high-pressure pump 18 and the amount of rinsing liquid that can be supplied by the processing device 8, the liquid level in the volume 27 of the ventilation container 37 rises or falls. If more rinsing liquid is supplied than is removed by the high-pressure pump, the float 22 rises further until it closes the opening 23 of the vent tube 38. Excess liquid volume can now be returned via line 40 to the collecting and clarifying tank 4, the line 40 advantageously being connected to the venting tank 37 in such a way that liquid enriched with dirt particles is returned to the collecting and clarifying tank 4. In order to be able to adapt to the changing pressure in the collecting and clarifying tank, the flow control 16 is arranged in the return line 40.

Durch die über die Leitung 36 zugeführte Flüssigkeitsmenge und die durch die Hochdruckpumpe 18 abgeführte Flüssigkeitsmenge wird in dem Volumen 27 des Entlüftungsbehälters 37 eine langsame Strömung gebildet, wobei ein Flüssigkeitsteilchen ca. 1 min. benötigt, um sich vom Eintritt bis zum Austritt zu bewegen. Durch die an der Eintrittsstelle der Verbindungsleitung 36 vorgesehene Strömungsleiteinrichtung 32 wird für eine laminare Strömung auch im Eintrittsbereich gesorgt, so daß Teilchen, die sich abgesetzt haben oder im Absetzen begriffen sind, nicht aufgewirbelt werden. Vorteilhaft wird das weitere Absetzen von Schmutzteilchen, und damit die weitere Klärung der Spülflüssigkeit im vorliegenden Ausführungsbeispiel dadurch gefördert, daß der Entlüftungsbehälter 37 auf dem Behälter 1 schwingungsisoliert über die eine Feder aufweisenden Schwingungselemente 35 gehaltert ist. Durch diese Halterung werden Bewegungen und Verwirbelungen der Flüssigkeit in dem Entlüftungsbehälter, die ein Absetzen von Schmutzteilchen verzögern, weitgehend vermieden. Bei großen abgelagerten Schmutzteilchenmengen kann der Entlüftungsbehälter 37 durch einen externen Spülstrahl 39, der durch den Spüleinlaß 25 geschickt wird, gereinigt werden.By the amount of liquid supplied via line 36 and the amount discharged by high pressure pump 18 A quantity of liquid forms a slow flow in the volume 27 of the venting container 37, with a liquid particle about 1 min. needed to move from entry to exit. The flow guide device 32 provided at the entry point of the connecting line 36 also ensures a laminar flow in the entry area, so that particles which have settled or are about to settle are not whirled up. The further settling of dirt particles, and thus the further clarification of the rinsing liquid in the present exemplary embodiment, is advantageously promoted in that the venting container 37 is held on the container 1 in a vibration-insulated manner via the vibration elements 35 having a spring. This holder largely prevents movements and swirling of the liquid in the venting container, which delay the settling of dirt particles. With large amounts of dirt particles deposited, the venting container 37 can be cleaned by an external flushing jet 39 which is sent through the flushing inlet 25.

Geht durch steigende Schmutzkonzentration in dem Sammel- und Klärbehälter 4 die durch die Aufbereitungseinrichtung 8 erzeugbare Menge an aufbereiteter Spülflüssigkeit zurück, so kommt es zu einem Absinken des Flüssigkeitsspiegels in dem Volumen 27 des Entlüftungsbehälters 37, bis die Öffnung 24 der Verbindungsleitung 17 durch den Schwimmer 22 geschlossen wird. Damit kommt es zu einem Druckabfall in der Leitung 17, die zu einer Öffnung des Rückschlagventils 19 und damit, unter Vermeidung von Kavitation, zu einer unmittelbaren Weiterversorgung der Hochdruckpumpe 18 mit Spülwasser aus dem Frischwasserbehälter 3 führt.If the amount of treated rinsing liquid that can be generated by the processing device 8 decreases due to increasing dirt concentration in the collecting and clarifying tank 4, the liquid level in the volume 27 of the ventilation tank 37 drops until the opening 24 of the connecting line 17 through the float 22 is closed. This results in a pressure drop in the line 17, which leads to an opening of the check valve 19 and thus, while avoiding cavitation, to an immediate further supply of the high-pressure pump 18 with rinsing water from the fresh water tank 3.

Eine Unterbrechung der Arbeit mit dem Reinigungsstrahl kann bei dem gezeigten Ausführungsbeispiel dadurch erfolgen, daß ein Absperrhahn am Ende der Leitung 31 für den Reinigungsstrahl geschlossen wird. Das durch die Pumpe 18 geförderte Spülwasser kann dann über die Leitung 30 in den Spülwasserkreislauf zurückgeführt werden. Durch das Sicherheits- und Schaltventil 29 wird dafür gesorgt, daß die durch die Leitung 30 strömende Flüssigkeit in bezug auf den Druck- und die Strömungsgeschwindigkeit der durch die Leitung 36 strömenden Flüssigkeit aus der Aufbereitungseinrichtung 8 angeglichen ist. Damit kann die durch die Pumpe 18 geförderte Flüssigkeit ohne nachteilige Änderung der Strömungsverhältnisse in dem Entlüftungsbehälter 37 in den Entlüftungsbehälter 37 zurückgeführt werden. Durch diese Rückführung wird es vorteilhaft vermieden, daß die Hochdruckpumpe 18 bei Unterbrechung der Arbeit mit dem Reinigungsstrahl abgeschaltet und ein Wiederanlauf der Anlage durchgeführt werden muß.In the exemplary embodiment shown, work with the cleaning jet can be interrupted in that a shut-off valve at the end of line 31 is closed for the cleaning jet. The rinsing water conveyed by the pump 18 can then be returned to the rinsing water circuit via line 30. The safety and switching valve 29 ensures that the liquid flowing through line 30 is matched with respect to the pressure and flow velocity of the liquid flowing through line 36 from the processing device 8. The liquid conveyed by the pump 18 can thus be returned to the ventilation container 37 without disadvantageously changing the flow conditions in the ventilation container 37. This return advantageously prevents the high-pressure pump 18 from being switched off when work with the cleaning jet is interrupted and the system having to be restarted.

Claims (18)

  1. Sludge suction vehicle with
    a high-pressure pump (18) to produce a cleaning jet;
    an extraction system (13 to 15, 34) for extracting slurries produced by the cleaning jet;
    a collecting and settling tank (4), connected to the extraction system, for the extracted slurries;
    a processing unit (8), connected to the collecting and settling tank, for processing pretreated liquid from the collecting and settling tank, the processing unit (8) being connectable to the high-pressure pump (18) to feed it with processed liquid; and
    a fresh water tank (3), connectable to the high-pressure pump (18) to feed it with fresh water,
    characterized in that
    the processing unit (8) is connected to an inlet of the high-pressure pump (18) via an air separation unit located above the processing unit and the high-pressure pump and possessing a vent opening (23, 38);
    the air separation unit comprises a deaeration tank (37) with a float device (22) by means of which a connecting pipe (17) to the high-pressure pump (18) can be shut off if the liquid level in the tank (37) falls; and
    the fresh water tank (3) is connectable to the inlet of the high-pressure pump (18) via a non-return valve (19) which opens under the suction effect of the high-pressure pump when the connecting pipe (17) is shut off.
  2. Sludge suction vehicle according to Claim 1, characterized in that an end opening of the connecting pipe (17) is closable by the float device.
  3. Sludge suction vehicle according to Claim 1 or 2, characterized in that the vent opening (23, 38) is closable by the float device (22) if the liquid level in the deaeration tank (37) rises.
  4. Sludge suction vehicle according to one of Claims 1 to 3, characterized in that an end opening of the connecting pipe (17) projects into the interior of the deaeration tank (37).
  5. Sludge suction vehicle according to one of Claims 1 to 4, characterized in that the deaeration tank (37) has a settling space (27) for further clarification, by deposition of dirt particles, of the liquid supplied by the processing unit (8).
  6. Sludge suction vehicle according to one of Claims 1 to 5, characterized in that the deaeration tank (37) has anti-vibration mountings on the sludge suction vehicle to allow the liquid in the tank to settle.
  7. Sludge suction vehicle according to one of Claims 1 to 6, characterized in that the deaeration tank (37) is connected to the collecting and settling tank (4) via a return pipe (40) with a flow controller (16), for the return of liquid heavily contaminated with dirt particles.
  8. Sludge suction vehicle according to one of Claims 1 to 7, characterized in that the deaeration tank (37) has a flushing inlet (25) for flushing from the exterior.
  9. Sludge suction vehicle according to one of Claims 5 to 8, characterized in that the settling space (27) of the deaeration tank has an elongated, essentially cylindrical, shape.
  10. Sludge suction vehicle according to Claim 9, characterized in that the float device (22) is located at one end of the elongated settling space.
  11. Sludge suction vehicle according to Claim 9 or 10, characterized in that the outlet from the deaeration tank (37) of the return pipe (40) between the deaeration tank and the collecting and settling tank (4) is located at one end of the elongated settling space.
  12. Sludge suction vehicle according to one of Claims 7 to 11, characterized in that the inlet of a connecting pipe (36) between the deaeration tank (37) and the processing unit (8) and the outlet of the return pipe (40) between the deaeration tank (37) and the collecting and settling tank (4) are located at the same end of the elongated settling space (27) of the deaeration tank (37).
  13. Sludge suction vehicle according to Claim 12, characterized in that the inlet of the connecting pipe (36) into the deaeration tank (37) and the outlet of the return pipe (40) from the deaeration tank (37) are located at the opposite end of the settling space (27) of the deaeration tank (37) to the float device (22).
  14. Sludge suction vehicle according to one of Claims 8 to 13, characterized in that the flushing inlet (25) is located at the end of the settling space (27) of the deaeration tank (37) at which the float device (22) is fitted.
  15. Sludge suction vehicle according to one of Claims 1 to 14, characterized in that the deaeration tank (37) is mounted on a combined tank (1) comprising the collecting and settling tank (4) and the fresh water tank (3).
  16. Sludge suction vehicle according to Claim 15, characterized in that the deaeration tank (37) extends approximately over the length of the combined tank (1).
  17. Sludge suction vehicle according to one of Claims 1 to 16, characterized in that a return pipe (30) is provided on the outlet side of the high-pressure pump (18), branching off a pipe (31) for the cleaning jet, with a safety and switching valve (29) arranged on it, and opening into a connecting pipe (36) between the processing unit (8) and the deaeration tank (37).
  18. Sludge suction vehicle according to one of Claims 1 to 17, characterized in that a flow control device to establish a laminar flow is provided at the inlet into the deaeration tank (37) of a connecting pipe (36) between the processing unit (8) and the deaeration tank (37).
EP92107303A 1991-05-02 1992-04-29 Sludge suction vehicle Expired - Lifetime EP0512392B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4114384A DE4114384C1 (en) 1991-05-02 1991-05-02
DE4114384 1991-05-02

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EP0512392A1 EP0512392A1 (en) 1992-11-11
EP0512392B1 true EP0512392B1 (en) 1995-03-29

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9215545U1 (en) * 1992-11-14 1993-01-28 Linz, Manfred, 8705 Zellingen, De
DE4317409A1 (en) * 1993-05-18 1994-11-24 Hammonia Apparatebau Kroenke G Device for cleaning sewers
DE19652585C2 (en) * 1996-12-17 2000-04-13 Bernhard Schmidt Device for venting a siphon line carrying a liquid
CN104234179B (en) * 2014-09-28 2016-06-08 佛山市三水新明珠建陶工业有限公司 A kind of Apparatus and method for removing ditch mud
CN109922896A (en) * 2016-11-04 2019-06-21 欧米加液体废物解决方案有限公司 Clean vehicle and high pressure cleaning system

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6515798A (en) * 1965-12-06 1967-06-07
DE1609112B1 (en) * 1966-07-19 1970-04-23 Keller & Knappich Gmbh Vehicle for sewer cleaning and mud suction
DE2648851C3 (en) * 1976-10-27 1979-04-05 Georg Ing.(Grad.) 8081 Tuerkenfeld Klass Vehicle for sludge emptying and cleaning
DE2719599C2 (en) * 1977-05-02 1979-05-03 Georg Ing.(Grad.) 8081 Tuerkenfeld Klass Vehicle for sewer cleaning and mud transport
DE2918458C3 (en) * 1979-05-08 1983-04-28 Karl 8901 Welden Wiedemann Sewer cleaning vehicle
DE3001325C2 (en) * 1980-01-16 1982-12-16 Karl 8901 Welden Wiedemann Sewer cleaning vehicle
DE3238600C3 (en) * 1982-10-19 1995-02-23 Karl Wiedemann Device for sewer or pit cleaning
AT391508B (en) * 1988-09-14 1990-10-25 M U T Ges M B H Sludge-suction and high-pressure-flushing vehicle for cleaning sewer ducts or the like
DE8903134U1 (en) * 1989-03-14 1989-05-18 Assmann, Peter, 7128 Lauffen, De

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ATE120509T1 (en) 1995-04-15
EP0512392A1 (en) 1992-11-11
DE4114384C1 (en) 1992-12-03
DK0512392T3 (en) 1995-06-12
DE59201750D1 (en) 1995-05-04

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