EP0048427A1 - Sludge suction vehicle - Google Patents

Sludge suction vehicle Download PDF

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Publication number
EP0048427A1
EP0048427A1 EP81107250A EP81107250A EP0048427A1 EP 0048427 A1 EP0048427 A1 EP 0048427A1 EP 81107250 A EP81107250 A EP 81107250A EP 81107250 A EP81107250 A EP 81107250A EP 0048427 A1 EP0048427 A1 EP 0048427A1
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EP
European Patent Office
Prior art keywords
container
suction vehicle
sludge
water
mud suction
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP81107250A
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German (de)
French (fr)
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EP0048427B1 (en
Inventor
J Hellmers Gmbh Herm
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HELLMERS HERM J GmbH
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HELLMERS HERM J GmbH
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Priority to AT81107250T priority Critical patent/ATE6533T1/en
Publication of EP0048427A1 publication Critical patent/EP0048427A1/en
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Publication of EP0048427B1 publication Critical patent/EP0048427B1/en
Expired legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F7/00—Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
    • E03F7/10—Wheeled apparatus for emptying sewers or cesspools

Definitions

  • the invention relates to a sludge suction vehicle, the sludge receptacle with a sludge supply nozzle, a water pump connection, which leads via filter devices to a supply of a high-pressure flushing device, and in the area of the water pump connection with a coarse filter for separating solids and water.
  • the object of the present invention is therefore to create a sludge suction vehicle of the type mentioned in the introduction, in which a much better separation between water and solids takes place in the sludge tank.
  • a chain curtain is used as a coarse filter within the sludge compartment Det, which extends substantially over the entire cross-section of the container.
  • the chain curtain can be formed from a plurality of chain strands which are not connected to one another and are arranged closely adjacent to one another, the upper ends of which are firmly connected to the container wall.
  • a chain curtain can act differently in points because the individual links of the chain curtain can perform a movement that is different from the movement of the neighboring links.
  • the solids of the sludge supplied on the inlet side can lose their kinetic energy much better and then sink downward on the inflow-side surface of the chain curtain due to gravity. The water emerging behind the chain curtain is then much better cleaned.
  • An improvement in the effect of the chain curtain can also be achieved by arranging a pendulum-suspended baffle from the flow side behind the chain curtain, which extends essentially over the entire lower half of the container parallel to the chain curtain.
  • the mud suction vehicle shown in the drawings consists of a kettle-like sludge receptacle 11 carried by the vehicle chassis 10, which can be closed at its rear end with a dome-like cover 12.
  • a water pump connection 13 In the cover 12 there is a water pump connection 13, via a filter arrangement (not shown) to a process water compartment of the container 11 or a separate process water storage tank.
  • a hinge joint 14 Between . the container 11 and the lid 12 is a hinge joint 14, which gives the possibility of pivoting the lid 12 upward about a horizontal axis for emptying the container 11.
  • the container 11 is provided with a sludge feed pipe 15, which has a hose, not shown can be connected to a drain or the like to be emptied.
  • a solid return line 16 which is connected to the filter arrangement located between the sludge tank and the service water tank, projects through the tank 11 from bottom to top. If, during operation, the sludge S has been deposited on the bottom of the container, water which can be used for further high-pressure flushing can be pumped out above the solids via the nozzle 13.
  • a chain curtain 18 is provided in the container 11 so that relatively well pre-cleaned water is obtained at the nozzle 13 above the deposited sludge S.
  • This chain curtain consists of a plurality of interconnected, closely adjacent chain strands, the upper ends of which are firmly connected to the wall of the container 11, but preferably via an arcuate holder 17 to the cover 12.
  • the chain links are made of metal and in practice a chain link size of approximately 5 to 10 cm has proven to be useful.
  • a baffle 20 is arranged at a distance, which is formed by a semicircular sheet can be, which extends substantially over the entire lower half of the container cross-section.
  • the bearing axis 21 arranged at the upper edge of the baffle wall is preferably fastened to the cover 12 with a holder 19, although it can of course also be stored in the container 11 itself.
  • the baffle 20 ensures that the water to be reused from the muddy material is only passed on from the upper half of the chain curtain 18, where it contains less solids and that the soil sludge is kept away from the water pump nozzle.
  • An even further improved cleaning effect i. H.
  • An improved separation of solids and water is achieved if a coarse sieve in the form of a perforated plate 22 is arranged in the cover 12 behind the baffle 20, preferably at a distance of 3 mm.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Treatment Of Sludge (AREA)
  • Sewage (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)

Abstract

1. A sludge suction vehicle, in which the sludge reception tank has a sludge inlet, a water pumping outlet leading via filter means to a service water compartment used to supply a high-pressure flushing means, and a coarse filter in the region of the water pumping outlet for the purpose of separating solids and water, characterised in that the coarse filter is provided with a chain curtain (18).

Description

Die Erfindung betrifft einen Schlammsaugewagen, dessen Schlammaufnahmebehälter mit einem Schlammzufuhrstutzen, einem Wasserabpumpstutzen, der über Filtereinrichtungen zu einem der Versorgung einer Hochdruck-Spüleinrichtung dienenden Brauchwasserabteil führt, und im Bereich des Wasserabpumpstutzens mit einem Grobfilter zur Trennung von Feststoffen und Wasser versehen ist.The invention relates to a sludge suction vehicle, the sludge receptacle with a sludge supply nozzle, a water pump connection, which leads via filter devices to a supply of a high-pressure flushing device, and in the area of the water pump connection with a coarse filter for separating solids and water.

Beim Betrieb von Schlammsaugewagen, die vor allem zum Reinigen von Kanälen durch Hochdruckspülung dienen, wird eine erhebliche Menge an Spülwasser benötigt, welches in einem besonderen Brauchwasserbehälter des Schlammsaugewagens mitgeführt wird. Da der abgesaugte Schlamm eine große Menge an Wasser enthält, ist es üblich, aus dem Schlammbehälter bzw. aus dem Schlammabteil eines gemeinsamen Behälters ein Teil des grob von Feststoffen befreiten Wassers zum Brauchwasserabteil zurückzuführen. In die Verbindungsleitung zwischen Schlamm- und Wasserabteil schaltet man normalerweise eine Filtereinrichtung ein, die jedoch erheblich belastet wird, wenn der Wasseranteil im Schlammabteil nicht schon eine ausreichende Vorreinigung erfahren hat. Um die Trennung von Wasser und Feststoffen im Schlammabteil zu verbessern, hat man daher schon bisher grobe Siebe vor den Wasserabpumpstutzen gelegt, die zu einer Beruhigung des Wassers und zu einem Absinken der Feststoffe führen. Im allgemeinen ist aber bisher das aus dem Schlammabteil abgeführte Wasser noch so stark mit Fremdstoffen beladen, daß es sehr häufig zu Verstopfungen der nachgeschalteten Filtereinrichtungen kommt, die nur mit relativ großem Aufwand und mit geringem Wirkungsgrad beseitigt werden können.When operating mud suction vehicles, which are primarily used to clean sewers by high-pressure flushing, a considerable amount of flushing water is required, which is a special practice water tank of the mud suction vehicle is carried. Since the extracted sludge contains a large amount of water, it is customary to return part of the water which has been roughly freed from solids to the process water compartment from the sludge tank or from the sludge compartment of a common container. In the connecting line between the sludge and water compartments, a filter device is normally switched on, but this is considerably stressed if the water content in the sludge compartment has not already been adequately pre-cleaned. In order to improve the separation of water and solids in the sludge compartment, coarse sieves have therefore already been placed in front of the water pumping nozzle, which calm the water and lower the solids. In general, however, the water discharged from the sludge compartment has so far been so heavily loaded with foreign matter that it very often leads to blockages in the downstream filter devices, which can only be removed with relatively great effort and with little efficiency.

Aufgabe der vorliegenden Erfindung ist daher die Schaffung eines Schlammsaugewagens der einleitend genannten Art, bei dem im Schlammbehälter eine wesentlich bessere Trennung zwischen Wasser und Feststoffen erfolgt.The object of the present invention is therefore to create a sludge suction vehicle of the type mentioned in the introduction, in which a much better separation between water and solids takes place in the sludge tank.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß als Grobfilter innerhalb des Schlammabteils ein Kettenvorhang verwendet wird, der sich im wesentlichen über den gesamten Behälterquerschnitt erstreckt. Dabei kann der Kettenvorhang aus einer Mehrzahl von untereinander unverbundenen, eng benachbart angeordneten Kettensträngen gebildet sein, deren obere Enden fest an der Behälterwandung angeschlossen sind. Anders als bei stationären Sieben, kann ein Kettenvorhang punktuell unterschiedlich wirken, da die einzelnen Glieder des Kettenvorhanges eine Bewegung ausführen können, die anders verläuft als die Bewegung der benachbarten Glieder. Die Erfahrung zeigt, daß die Feststoffe des eintrittsseitig zugeführten Schlammes wesentlich besser ihre kinetische Energie verlieren können und dann an der zuströmseitigen Fläche des Kettenvorhanges durch die Schwerkraft nach unten sinken. Das hinter dem Kettenvorhang austretende Wasser ist dann wesentlich besser gereinigt.This object is achieved in that a chain curtain is used as a coarse filter within the sludge compartment Det, which extends substantially over the entire cross-section of the container. In this case, the chain curtain can be formed from a plurality of chain strands which are not connected to one another and are arranged closely adjacent to one another, the upper ends of which are firmly connected to the container wall. In contrast to stationary sieves, a chain curtain can act differently in points because the individual links of the chain curtain can perform a movement that is different from the movement of the neighboring links. Experience shows that the solids of the sludge supplied on the inlet side can lose their kinetic energy much better and then sink downward on the inflow-side surface of the chain curtain due to gravity. The water emerging behind the chain curtain is then much better cleaned.

Eine Verbesserung der Wirkung des Kettenvorhanges kann man auch noch dadurch erzielen, daß man ab strömseitig hinter dem Kettenvorhang eine pendelnd aufgehängte Prallwand anordnet, die sich im wesentlichen über die gesamte untere Hälfte des Behälters parallel zum Kettenvorhang erstreckt.An improvement in the effect of the chain curtain can also be achieved by arranging a pendulum-suspended baffle from the flow side behind the chain curtain, which extends essentially over the entire lower half of the container parallel to the chain curtain.

Im Hinblick auf die vereinfachte Entleerung eines kesselartigen Behälters, dessen hinterer Behälterboden von einem schwenkbar angelenkten Deckel gebildet wird, ist es von Vorteil, wenn gemäß einem weiteren Vorschlag der Erfindung der Kettenvorhang und die Prallwand im Deckel gelagert bzw. befestigt sind.In view of the simplified emptying of a kettle-like container, the rear container bottom of which is formed by a pivotally hinged lid, it is advantageous if, according to a further proposal of the invention, the chain curtain and the baffle are mounted or fastened in the lid.

Weitere Merkmale der Erfindung ergeben sich aus den Unteransprüchen.Further features of the invention emerge from the subclaims.

Nachfolgend wird eine bevorzugte Ausführungsform eines erfindungsgemässen Schlammsaugewagens anhand der beigefügten Zeichnung beispielsweise erläutert.A preferred embodiment of a sludge suction vehicle according to the invention is explained below using the attached drawing, for example.

In der Zeichnung zeigen:.

  • Fig. 1 einen schematischen vertikalen Querschnitt durch das hintere Ende eines erfindungsgemässen Schlammsaugewagens und
  • Fig. 2 einen Querschnitt gemäß der Schnittlinie II-II der Fig. 1.
In the drawing show:
  • Fig. 1 shows a schematic vertical cross section through the rear end of a mud suction vehicle according to the invention and
  • 2 shows a cross section along the section line II-II of FIG. 1st

Der in den Zeichnungen dargestellte Schlammsaugewagen besteht aus einem vom Fahrzeugchassis 10 getragenen kesselartigen Schlammaufnahmebehälter 11, der an seinem hinteren Ende mit einem domartigen Deckel 12 verschließbar ist. Im Deckel 12 befindet sich ein Wasserabpumpstutzen 13, über eine nicht dargestellte Filteranordnung zu einem Brauchwasserabteil des Behälters 11 oder einem gesonderten Brauchwasseraufnahmetank führt. Zwischen . dem Behälter 11 und dem Deckel 12 befindet sich ein Scharniergelenk 14, welches die Möglichkeit gibt, zur Entleerung des Behälters 11 den Deckel 12 um eine horizontale Achse nach oben zu verschwenken.The mud suction vehicle shown in the drawings consists of a kettle-like sludge receptacle 11 carried by the vehicle chassis 10, which can be closed at its rear end with a dome-like cover 12. In the cover 12 there is a water pump connection 13, via a filter arrangement (not shown) to a process water compartment of the container 11 or a separate process water storage tank. Between . the container 11 and the lid 12 is a hinge joint 14, which gives the possibility of pivoting the lid 12 upward about a horizontal axis for emptying the container 11.

Der Behälter 11 ist mit einem Schlammzufuhrstutzen 15 versehen, der mit einem nicht dargestellten Schlauch
an ein zu entleerendes Siel oder dergleichen angeschlossen werden kann. Durch den Behälter 11 von unten nach oben ragt eine Feststoff-Rückführleitung 16, die mit der zwischen Schlammbehälter und Brauchwasserbehälter liegenden Filteranordnung verbunden ist. Wenn sich im Betrieb auf dem Boden des Behälters der Schlamm S abgelagert hat, kann oberhalb der Feststoffe über den Stutzen 13 für weitere Hochdruckspülungen verwendbares Wasser abgepumpt werden. Damit am Stutzen 13 über dem abgelagerten Schlamm S relativ gut vorgereinigtes Wasser anfällt, ist in dem Behälter 11 ein Kettenvorhang 18 vorgesehen. Dieser Kettenvorhang besteht aus einer Mehrzahl von untereinander unverbundenen, eng benachbart angeordneten Kettensträngen, deren obere Enden fest mit der Wand des Behälters 11, vorzugsweise jedoch über eine bogenförmige Halterung 17 mit dem Deckel 12 verbunden sind. Die Kettenglieder bestehen aus Metall und es hat sich in der Praxis eine Kettengliedgröße von etwa 5 bis 10 cm als zweckdienlich erwiesen.The container 11 is provided with a sludge feed pipe 15, which has a hose, not shown
can be connected to a drain or the like to be emptied. A solid return line 16, which is connected to the filter arrangement located between the sludge tank and the service water tank, projects through the tank 11 from bottom to top. If, during operation, the sludge S has been deposited on the bottom of the container, water which can be used for further high-pressure flushing can be pumped out above the solids via the nozzle 13. A chain curtain 18 is provided in the container 11 so that relatively well pre-cleaned water is obtained at the nozzle 13 above the deposited sludge S. This chain curtain consists of a plurality of interconnected, closely adjacent chain strands, the upper ends of which are firmly connected to the wall of the container 11, but preferably via an arcuate holder 17 to the cover 12. The chain links are made of metal and in practice a chain link size of approximately 5 to 10 cm has proven to be useful.

Hinter dem Kettenvorhang 18 ist mit Abstand eine Prallwand 20 angeordnet, die von einem halbkreisförmigen Blech gebildet sein kann, welches sich im wesentlichen über die gesamte untere Hälfte des Behälterquerschnittes erstreckt. Die am oberen Rand der Prallwand angeordnete Lagerachse 21 ist vorzugsweise mit einer Halterung 19 am Deckel 12 befestigt, obwohl sie selbstverständlich auch im Behälter 11 selbst gelagert sein kann. Die Prallwand 20 sorgt dafür, daß das wiederzuverwendende Wasser aus dem schlammigen Gut nur von der oberen Hälfte des Kettenvorhanges 18 weitergeleitet wird, wo es weniger Feststoffe enthält und daß der Bodenschlamm von dem Wasserabpumpstutzen fern gehalten wird.Behind the chain curtain 18 a baffle 20 is arranged at a distance, which is formed by a semicircular sheet can be, which extends substantially over the entire lower half of the container cross-section. The bearing axis 21 arranged at the upper edge of the baffle wall is preferably fastened to the cover 12 with a holder 19, although it can of course also be stored in the container 11 itself. The baffle 20 ensures that the water to be reused from the muddy material is only passed on from the upper half of the chain curtain 18, where it contains less solids and that the soil sludge is kept away from the water pump nozzle.

Eine noch weiter verbesserte Reinigungswirkung, d. h. einer verbesserten Trennung von Feststoffen und Wasser, erreicht man, wenn im Deckel 12 hinter der Prall-wand 20, vorzugsweise in einem Abstand von 3Q mm, ein Grobsieb in Form einer Lochplatte 22 angeordnet wird.An even further improved cleaning effect, i. H. An improved separation of solids and water is achieved if a coarse sieve in the form of a perforated plate 22 is arranged in the cover 12 behind the baffle 20, preferably at a distance of 3 mm.

Untersuchungen mit dem erfindungsgemäßen Schlammsaugewagen haben gezeigt, daß das über den Stutzen 13 abpumpbare Wasser einen ganz erheblich verminderten Feststoffanteil enthält, so daß es zu einer wesentlich geringeren Belastung der Filteranordnung zwischen Schlammbehälter und Brauchwasserbehälter kommt.Investigations with the sludge suction vehicle according to the invention have shown that the water which can be pumped out via the nozzle 13 contains a very considerably reduced proportion of solids, so that the filter arrangement between the sludge tank and the service water tank is subjected to a considerably lower load.

Sollte sich der Kettenvorhang 18 oder das grobe Sieb 22 zusetzen, kann man sehr einfach und sehr schnell eine Durchgängigkeit von Sieb und Kettenvorhang dadurch erreichen, daß man die Absperrorgane des Schlammbehälters mehrfach öffnet und schließt. Durch den Druckwechsel und die Druckstöße fallen dann die die Verstopfung bewirkenden Feststoffe erfahrungsgemäß sehr schnell wieder vom Kettenvorhang 18 und vom Sieb 22 ab.Should the chain curtain 18 or the coarse sieve 22 become clogged, it is very easy and very quick to achieve a continuity of the sieve and chain curtain by having the shut-off elements of the sludge tank opens and closes several times. Experience has shown that the solids causing the blockage drop very quickly from the chain curtain 18 and from the screen 22 due to the pressure change and the pressure surges.

Claims (8)

1. Schlammsaugewagen, dessen Schlammaufnahmebehälter mit einem Schlammzufuhrstutzen, einem Wasserabpumpstutzen, der über Filtereinrichtungen zu einem der Versorgung ei- ner Hochdruck-Spüleinrichtung dienenden Brauchwasserabteils führt, und im Bereich des Wasserabpumpstutzens mit einem Grobfilter zur Trennung von Feststoffen und Wasser versehen ist, dadurch gekennzeichnet, daß das Grobfilter mit einem Kettenvorhang (18) versehen ist.1. sludge suction vehicle, the sludge holding container of which is provided with a sludge supply nozzle, a water pump connection which leads via filter devices to a service water compartment serving to supply a high-pressure flushing device, and in the area of the water pump nozzle with a coarse filter for separating solids and water, characterized in that that the coarse filter is provided with a chain curtain (18). 2. Schlammsaugewagen nach Anspruch 1 dadurch gekennzeichnet, daß der Kettenvorhang (18) sich im wesentlichen über den gesamten Behälterquerschnitt erstreckt (Fig. 2).2. mud suction vehicle according to claim 1, characterized in that the chain curtain (18) extends substantially over the entire cross-section of the container (Fig. 2). 3. Schlammsaugewagen nach Anspruch 1 und 2 dadurch gekennzeichnet, daß der Kettenvorhang (18) aus einer Mehrzahl von untereinander unverbundenen, eng benachbart angeordneten Kettensträngen besteht, deren obere Enden fest an der Behälterwandung (1.1, 12) angeschlossen sind.3. mud suction vehicle according to claim 1 and 2, characterized in that the chain curtain (18) consists of a plurality of interconnected, closely adjacent chain strands, the upper ends of which are firmly connected to the container wall (1.1, 12). 4. Schlammsaugewagen nach Anspruch 1 bis 3 dadurch gekennzeichnet, daß die Kettenglieder aus Metall bestehen und eine Länge von etwa 5 bis 10 cm haben.4. mud suction vehicle according to claim 1 to 3, characterized in that the chain links are made of metal and have a length of about 5 to 10 cm. 5. Schlammsaugewagen nach Anspruch 1 bis 4 dadurch gekennzeichnet, daß zwischen dem Kettenvorhang (18) und dem Wasserabpumpstutzen (13) eine am oberen Ende an einer horizontalen Achse (21) pendelnd aufgehängte Prallwand (20) angeordnet ist, die sich im wesentlichen über die gesamte untere Querschnittshälfte des Behälters (11) erstreckt.5. mud suction vehicle according to claim 1 to 4, characterized in that between the chain curtain (18) and the water pump connection (13) is arranged at the upper end on a horizontal axis (21) pendulum suspended baffle (20), which is essentially about the entire lower cross-sectional half of the container (11) extends. 6. Schlammsaugewagen nach Anspruch 1 bis 5 dadurch gekennzeichnet, daß dem Wasserabpumpstutzen (13) unmittelbar benachbart im Behälter (11) ein grobes Sieb (22) vorzugsweise ein Lochblech angeordnet ist.6. mud suction vehicle according to claim 1 to 5, characterized in that the water pumping nozzle (13) immediately adjacent in the container (11), a coarse sieve (22) is preferably arranged in a perforated plate. 7. Schlammsaugewagen nach Anspruch 5 und 6 dadurch gekennzeichnet, daß der Abstand zwischen Prallwand (20) und Sieb (22) etwa 30 mm beträgt.7. mud suction vehicle according to claim 5 and 6 characterized thereby records that the distance between the baffle (20) and sieve (22) is about 30 mm. 8. Schlammsaugewagen mit einem kesselartigen Behälter, dessen hinterer Behälterboden zwecks Entleerung von einem schwenkbar angelenkten Deckel gebildet wird,nach Anspruch 1 bis 7 dadurch gekennzeichnet, daß der Kettenvorhang (18) die Prallwand (20) und das grobe Sieb (22) im Behälterdeckel (12) gelagert bzw. befestigt sind.8. mud suction vehicle with a kettle-like container, the rear container bottom is formed for emptying by a pivotally hinged lid, according to claim 1 to 7, characterized in that the chain curtain (18), the baffle (20) and the coarse sieve (22) in the container lid ( 12) are stored or fastened.
EP81107250A 1980-09-18 1981-09-15 Sludge suction vehicle Expired EP0048427B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81107250T ATE6533T1 (en) 1980-09-18 1981-09-15 MUD SUCTION CAR.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3035224A DE3035224C2 (en) 1980-09-18 1980-09-18 Sludge suction trolley
DE3035224 1980-09-18

Publications (2)

Publication Number Publication Date
EP0048427A1 true EP0048427A1 (en) 1982-03-31
EP0048427B1 EP0048427B1 (en) 1984-03-07

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ID=6112281

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81107250A Expired EP0048427B1 (en) 1980-09-18 1981-09-15 Sludge suction vehicle

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EP (1) EP0048427B1 (en)
AT (1) ATE6533T1 (en)
DE (1) DE3035224C2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT396147B (en) * 1990-03-08 1993-06-25 Josef Kaiser SUCTION PRESSURE DRUM

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8903134U1 (en) * 1989-03-14 1989-05-18 Assmann, Peter, 7128 Lauffen Sewer cleaning vehicle
DE9215545U1 (en) * 1992-11-14 1993-01-28 Linz, Manfred, 8705 Zellingen Portable separator vessel for separating solid objects contained in sewage sludge or similar, e.g. pieces of wood, stones, etc.

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2736587B2 (en) * 1977-08-13 1980-05-14 Wiedemann Und Reichardt Maschinenund Fahrzeugbau Gmbh, 8901 Welden Sewer cleaning vehicle

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2736587B2 (en) * 1977-08-13 1980-05-14 Wiedemann Und Reichardt Maschinenund Fahrzeugbau Gmbh, 8901 Welden Sewer cleaning vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT396147B (en) * 1990-03-08 1993-06-25 Josef Kaiser SUCTION PRESSURE DRUM

Also Published As

Publication number Publication date
DE3035224C2 (en) 1983-03-24
DE3035224A1 (en) 1982-03-25
EP0048427B1 (en) 1984-03-07
ATE6533T1 (en) 1984-03-15

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