EP0673458B1 - Gully emptier - Google Patents

Gully emptier Download PDF

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Publication number
EP0673458B1
EP0673458B1 EP94902755A EP94902755A EP0673458B1 EP 0673458 B1 EP0673458 B1 EP 0673458B1 EP 94902755 A EP94902755 A EP 94902755A EP 94902755 A EP94902755 A EP 94902755A EP 0673458 B1 EP0673458 B1 EP 0673458B1
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EP
European Patent Office
Prior art keywords
filter
vehicle according
suction vehicle
sludge suction
water
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EP94902755A
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German (de)
French (fr)
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EP0673458A1 (en
Inventor
Georg Dipl.-Ing. Klass
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Individual
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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 mud suction vehicle according to the preamble of claim 1.
  • Such a mud suction vehicle is known from DE-PS 30 34 058.
  • water carried along with the vehicle for cleaning for example a sewer, is sprayed onto the object to be cleaned under high pressure, and is then sucked into a container of the sludge-suction vehicle with the sludge substances thereby detached.
  • the sucked-in water is separated from the substances it contains and fed back to the cleaning jet.
  • a discharge line in the container for discharging the water to be supplied with the cleaning jet is provided with a filter at one end which can be moved up and down with a buoyancy body in order to separate out the coarse particles present in the tank water. The sludge settles on the bottom of the tank.
  • the water can be drained from the tank with the least filtering effort, since there are no substances floating on the water surface in this area, and also the density of the substances that settle down with gravity at a certain height over the deposit layer is relatively low.
  • the buoyancy body In order to balance the weight of the discharge lines and the filter, the buoyancy body must be of a relatively large size, as a result of which space is lost for the sludge to be collected and for cleaning water.
  • the buoyancy body floating on the water surface can be of a significantly smaller shape, since the load of the suction line is mainly taken over by the springs and the buoyancy body only has a control effect.
  • the springs are biased against the gravity of the parts of the drain line, so that the buoyancy body only has to compensate for a small part of the gravity of the filter and the drain line.
  • the up and down movable, provided with the filter end of the drain pipe is automatically adjusted in height to the changing water surface as in the Tecnik state.
  • the buoyancy body formed as a rigid hollow body which is connected via a connection to a line led out of the tank. According to this embodiment, it can be checked via the line whether the buoyancy body has suffered damage and has become leaky, or the buoyancy body can be flooded by supplying water in order to lower the filter deeper into the sludge water in the case of substances floating on the water surface.
  • the buoyancy body consists of a gas-inflatable balloon made of a robust, flexible material, the volume of which can be adjusted depending on the gas filling and which cannot exceed a predetermined maximum volume.
  • a variable buoyancy can thus be obtained so that the filter can be held in different positions with respect to the water surface.
  • a plastic tarpaulin reinforced with textile, for example, is suitable as the material for such a balloon. Since the maximum volume is fixed, a predetermined maximum buoyancy force cannot be exceeded even with variable pressure, in particular with negative pressure in the container.
  • FIG. 1 and 2 show a container 1 in which sucked-in sludge water 2 collects and on the bottom of which sludge 3 is deposited.
  • a filter designed as a cage drum 26, through which the water to be discharged enters a discharge line present in a hollow support 16.
  • the discharge line consists of a further tube 11 inside the container, which is connected to a flange 10 of a lead-through tube 8 through a container wall.
  • the discharge line is provided with a valve 40 on the outside of the container. Between the valve 40 and a low-pressure suction pump 42 there is a flexible hose line 41.
  • the cage drum 26 is cylindrical in shape with rods arranged along the cylinder jacket and fastened to rings in the interior of the drum. At the front ends of the cage drum there are rings for attaching doctor blades.
  • a buoyancy body 31 and the cage drum 26, which acts as a coarse filter, are fitted between two carrier brackets 15 and 16.
  • the support brackets are in turn rotatably attached to the pipe 11 serving as part of the discharge line, the axis of the pipe 11 being perpendicular to the longitudinal direction of the two supports 15 and 16.
  • the tube 11 is firmly attached to the container wall by means of the tube bushing 8 and the flange 10 and a holding strut 9.
  • the two support points of the tube 11 are each located near the lateral ends of the tube.
  • the carrier 16 is designed as a hollow carrier and, together with the feed-through tube 8, the tube 11 and the cage drum 26, represents the discharge line which can be moved up and down at one end.
  • the cage drum 26 is rotatably mounted between the carriers 15 and 16, and also has Carrier 16 out a rotary flange through which the water entering through the cage drum can enter the hollow support 16.
  • the cage drum 26 rotating about its axis of rotation 27 is driven by a drive 28 attached to the carrier 15.
  • a stripper 25 is held between the tube 11 and the cage drum 26 between the two supports 15 and 16.
  • the scraper 25 rests on the cage drum 26 and, due to the rotational movement of the cage drum 26, wipes off coarse material lying on the outside of the filter drum.
  • the scraper 25 consists of a scraper bar the length of the cage drum 26, the scraper bar being held by three holding brackets which in turn are fastened to a holding rod which is rotatably held between the carriers 15 and 16 and lies parallel to the axis 27 of the cage drum 26.
  • the buoyancy body 31 is attached, which in the embodiment shown has the shape of a drum and is designed as a rigid hollow body.
  • the buoyancy body is connected to a line 34.
  • the line 34 is attached to a flange 35 which is formed on a bushing projecting through the container.
  • the drum-shaped buoyancy body is fastened to the carriers 15 and 16 via the buoyancy body brackets 32 and 33.
  • a container strut 6 is attached to the container 1 and has at its end a trailer buffer 7 on which a holding part rests in a lower end position.
  • a spiral spring 19 and 20 are attached to laterally outstanding fastening webs 17 and 18 on the supports 15 and 16, respectively. With their second end, the coil springs are each attached to the tank 1.
  • the two respective attachment points at the ends of the springs are at different heights, so that the springs are biased due to the load with the weight of the parts of the discharge line.
  • the floating body 31 floating on the water surface must therefore compensate for a smaller part of the weight of the parts of the discharge line which can be moved up and down.
  • the two support beams are angled in their central region.
  • the cage drum 26 is fastened in the downwardly angled region of the two supports 15 and 16. This ensures that the cage drum is completely immersed in the water if, at a water level, as shown in the drawing, the axis of the buoyant body 31 and the axis of rotation 12 of the holding brackets 15 and 16 have approximately the same height.
  • the brackets 15 and 16 could also be bent in the opposite direction, the same function being achieved if the positions of the cage drum and the buoyancy body are interchanged.
  • the buoyancy body 31 floating on the water surface 4 moves with the water level upwards or downwards, the two supports 15 and 16 moving about the axis of rotation 12 on the Turn tube 11.
  • the position of the cage drum 26 with respect to the water surface is moved according to the division ratio of its arrangement on the supports 15 and 16 between the buoyancy body and the axis of rotation 12.
  • the semitrailer 6 is present, which limits the downward movement of the carrier 15. A large part of the weight of the free end of the one-sided parts of the discharge line is absorbed by the two spiral springs 19 and 20.
  • a torsion bar spring is used for partially absorbing the weight of the discharge line.
  • the torsion bar is parallel and in the vicinity of the axis of rotation 12. While one end of the torsion bar is attached to the container 1, at another end of the torsion bar a support is attached at right angles, on which one of the supports is slidably supported with a sliding part.
  • the torsion bar can, for example, be held in a tube of suitable dimension attached to the container 1.
  • the non-deformable drum-shaped buoyancy body 31 is connected to a feed line 34, through which the buoyancy body 31 can be filled with water.
  • the weight of the buoyancy body 31 is thus increased, so that the buoyancy is no longer sufficient to keep the buoyancy body on the water surface.
  • This proves to be particularly useful or desirable when there is a thick layer of floating substances 5 on the water surface 4 floats, and the cage drum 26 is to be lowered below this layer of floating substances 5.
  • the feed line 34 proves to be advantageous since it can be determined via the line 34 whether the buoyancy body 31 is damaged within the rough operating conditions within of the container 1 is done. Damage to the buoyancy body 31 can easily be demonstrated, since in this case water emerges through the line 34.
  • a deformable body which can be filled with gas can also be used.
  • a balloon body for example made of a plastic material, is provided with a pressurized gas line and is filled with gas as required, whereby the balloon expands against the gravity of the water and creates an effective buoyancy body.
  • the expansion of the balloon and thus the buoyancy can be controlled by filling the balloon with gas. It can thus be achieved that the filter is held at different depths below the water surface 4, depending on the filling of the balloon with gas.
  • the filter When the balloon is completely filled, the filter is held very close to the water surface, when the balloon is filled mediumly in a middle area between the water surface and the deposited sludge layer 3, and when the balloon is filled slightly, the filter is located near the deposit layer 3 at the bottom of the container.
  • the tightness of the container can be checked via the gas pressure resistance of the system.
  • a buoyancy body as a hollow body, a buoyancy body as a solid body made of material of low specific density, such as Wood or polystyrene. With solid bodies, however, there is no possibility of influencing the buoyancy force or the weight of the arrangement and thus adjusting the position of the filter with respect to the water surface.

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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)
  • Filtration Of Liquid (AREA)

Abstract

A gully emptier has a container (1) to which is connected a water jet injector pump or a vacuum/pressure pump for slurry. A discharge hose provided at a liftable and lowerable end with a filter (26) is arranged in the container (1) upstream of the connection to the suction side of a low lift pump (42). A float (31) is linked to the filter. Thanks to the float which floats at the surface of the water, the filter is automatically maintained at a predetermined depth below the surface of the water (4) even when the water level changes. The operators thus no longer need to manually adjust it. By using a floodable or inflatable float, the distance between the filter and the surface of the water may be accurately adjusted.

Description

Die Erfindung betrifft einen Schlammsaugewagen nach dem Oberbegriff des Anspruchs 1.The invention relates to a mud suction vehicle according to the preamble of claim 1.

Ein derartiger Schlammsaugewagen ist aus der DE-PS 30 34 058 bekannt. In dem dort beschriebenen Schlammsaugewagen wird mit dem Wagen mitgeführtes Wasser zur Reinigung, z.B. eines Abwasserkanals, unter hohem Druck auf das zu reinigende Objekt gespritzt, und anschließend mit den dadurch abgelösten Schlammstoffen in einen Behälter des Schlammsaugewagens angesaugt. In dem Behälter wird das angesaugte Wasser von den darin enthaltenen Stoffen getrennt und erneut dem Reinigungsstrahl zugeführt. Eine Abführleitung in dem Behälter zum Abführen von dem Reinigungsstrahl zuzuführendem Wasser ist an einem mit einem Auftriebskörper auf- und niederbewegbaren Ende mit einem Filter versehen, um die im Tankwasser vorhandenen Grobpartikel auszusondern. Am Boden des Behälters setzt sich der Schlamm ab. In einer bestimmten Höhe unterhalb der Wasseroberfläche kann das Wasser aus dem Behälter mit dem geringsten Filterungsaufwand abgeleitet werden, da in diesem Bereich keine auf der Wasseroberfläche schwimmenden Stoffe vorhanden sind, und zudem die Dichte der sich mit der Schwerkraft nach unten absetzenden Stoffe in einer bestimmten Höhe über der Ablagerungsschicht relativ gering ist. Um die Gewichtskraft der Abführleitungen und des Filters auszugleichen, muß der Auftriebskörper relativ groß beschaffen sein, wodurch Raum für den zu sammelnden Schlamm und für Reinigungswasser verlorengeht.Such a mud suction vehicle is known from DE-PS 30 34 058. In the sludge-suction vehicle described there, water carried along with the vehicle for cleaning, for example a sewer, is sprayed onto the object to be cleaned under high pressure, and is then sucked into a container of the sludge-suction vehicle with the sludge substances thereby detached. In the container, the sucked-in water is separated from the substances it contains and fed back to the cleaning jet. A discharge line in the container for discharging the water to be supplied with the cleaning jet is provided with a filter at one end which can be moved up and down with a buoyancy body in order to separate out the coarse particles present in the tank water. The sludge settles on the bottom of the tank. At a certain height below the water surface, the water can be drained from the tank with the least filtering effort, since there are no substances floating on the water surface in this area, and also the density of the substances that settle down with gravity at a certain height over the deposit layer is relatively low. In order to balance the weight of the discharge lines and the filter, the buoyancy body must be of a relatively large size, as a result of which space is lost for the sludge to be collected and for cleaning water.

Es ist eine Aufgabe der vorliegenden Erfindung, einen Schlammsaugewagen der eingangs genannten Art zu schaffen, bei dem die automatische Lagehalterung des Filters relativ zur Wasseroberfläche verbessert ist.It is an object of the present invention to provide a sludge suction vehicle of the type mentioned in the introduction, in which the automatic position retention of the filter relative to the water surface is improved.

Erfindungsgemäß wird diese Aufgabe mit den im Kennzeichen des Anspruchs 1 aufgeführten Merkmalen gelöst. Aufgrund der zwischen der Behälterwand und dem Filter befestigten Ausgleichsfedern kann der auf der Wasseroberfläche schwimmende Auftriebskörper von wesentlich kleinerer Form sein, da die Last der Absaugleitung hauptsächlich von den Federn übernommen wird und dem Auftriebskörper nur noch eine Steuerwirkung zukommt. Die Federn sind gegen die Schwerkraft der Teile der Abflußleitung vorgespannt, so daß der Auftriebskörper nur einen geringen Teil der Schwerkraft des Filters und der Abflußleitung ausgleichen muß. Das auf- und niederbewegbare, mit dem Filter versehene Ende der Abflußleitung wird wie im Stand der Tecnik automatisch in seiner Höhe an die wechselnde Wasseroberfläche angepaßt. Dies hat den Vorteil, daß das Bedienungspersonal nicht mehr auf die Lage des Filters in dem Behälter bezüglich der Wasseroberfläche achten muß, um diesen gegebenenfalls nachzustellen. Da die Mechanik zum automatischen Einstellen des Filters in seiner Lage bezüglich zur Wasseroberfläche vollständig innerhalb des Tanks gelegen ist, entfällt eine Vakuumdurchführung durch eine Tankwand, an der ein Nachführhebel mit dem Filter in Verbindung steht. Damit können Kosten gespart werden, da eine solche Vakuumdurchführung in der Herstellung relativ aufwendig ist, und die Zuverlässigkeit des rauhen Betriebsbedingungen unterworfenen Schlammsaugewagens kann erhöht werden.According to the invention, this object is achieved with the features listed in the characterizing part of claim 1. Due to the compensation springs attached between the tank wall and the filter, the buoyancy body floating on the water surface can be of a significantly smaller shape, since the load of the suction line is mainly taken over by the springs and the buoyancy body only has a control effect. The springs are biased against the gravity of the parts of the drain line, so that the buoyancy body only has to compensate for a small part of the gravity of the filter and the drain line. The up and down movable, provided with the filter end of the drain pipe is automatically adjusted in height to the changing water surface as in the Tecnik state. This has the advantage that the operating personnel no longer have to pay attention to the position of the filter in the container with respect to the water surface in order to readjust it if necessary. Since the mechanism for automatically adjusting the filter is located completely within the tank with respect to the water surface, there is no need for a vacuum to pass through a tank wall, on which a tracking lever is connected to the filter. Costs can thus be saved, since such a vacuum implementation is relatively complex to manufacture, and the reliability of the mud suction vehicle which is subjected to rough operating conditions can be increased.

In einer besonderen Ausführungsform ist der Auftriebskörper als ein starrer Hohlkörper ausgebildet, der über einen Anschluß mit einer aus dem Tank herausgeführten Leitung verbunden ist. Gemäß dieser Ausführungsform kann über die Leitung kontrolliert werden, ob der Auftriebskörper Beschädigungen erlitten hat und undicht geworden ist, oder der Auftriebskörper kann durch Zuführung von Wasser geflutet werden, um bei auf der Wasseroberfläche schwimmenden Stoffen den Filter tiefer in das Schlammwasser abzusenken.In a special embodiment, the buoyancy body formed as a rigid hollow body which is connected via a connection to a line led out of the tank. According to this embodiment, it can be checked via the line whether the buoyancy body has suffered damage and has become leaky, or the buoyancy body can be flooded by supplying water in order to lower the filter deeper into the sludge water in the case of substances floating on the water surface.

In einer weiteren bevorzugten Ausführungsform besteht der Auftriebskörper aus einem mit Gas füllbaren Ballon aus einem robusten flexiblen Material, dessen Volumen je nach Gasbefüllung einstellbar ist und der ein vorbestimmtes maximales Volumen nicht überschreiten kann. Es kann damit ein veränderbarer Auftrieb erhalten werden, so daß der Filter in verschiedenen Lagen bezüglich der Wasseroberfläche gehalten werden kann. Als Material für einen solchen Ballon eignet sich beispielsweise eine mit Textil verstärkte Kunststoffplane. Da das maximale Volumen festgelegt ist, kann eine vorgegebene maximale Auftriebskraft auch bei variablem Druck, insbesondere bei Unterdruck im Behälter, nicht überschritten werden.In a further preferred embodiment, the buoyancy body consists of a gas-inflatable balloon made of a robust, flexible material, the volume of which can be adjusted depending on the gas filling and which cannot exceed a predetermined maximum volume. A variable buoyancy can thus be obtained so that the filter can be held in different positions with respect to the water surface. A plastic tarpaulin reinforced with textile, for example, is suitable as the material for such a balloon. Since the maximum volume is fixed, a predetermined maximum buoyancy force cannot be exceeded even with variable pressure, in particular with negative pressure in the container.

Weitere bevorzugte Ausführungsformen gehen aus den Unteransprüchen hervor.Further preferred embodiments emerge from the subclaims.

Im folgenden werden beispielhaft Ausführungsformen nach der Erfindung unter Bezugnahme auf die Zeichnung genauer erläutert werden. In der Zeichnung zeigt:

Fig.1
eine Seitenquerschnittsansicht der Abführleitung des erfindungsgemäßen Schlammsaugewagens; und
Fig.2
eine Draufsicht bei aufgeschnittenem Behälter auf die Abflußleitung von Figur 1.
In the following, exemplary embodiments according to the invention will be explained in more detail with reference to the drawing. The drawing shows:
Fig. 1
a side cross-sectional view of the discharge line of the mud suction vehicle according to the invention; and
Fig. 2
a plan view with the container cut open to the drain line of Figure 1.

In den Figuren 1 und 2 ist ein Behälter 1 gezeigt, in dem sich angesaugtes Schlammwasser 2 sammelt, und an dessen Boden sich Schlamm 3 ablagert. Unter einer Wasseroberfläche 4 des Schlammwassers 2 ist ein als Käfigtrommel 26 ausgebildeter Filter gelegen, durch den das abzuführende Wasser in eine in einem Hohlträger 16 vorhandene Abführleitung eintritt. Die Abführleitung besteht innerhalb des Behälters aus einem weiteren Rohr 11, das an einen Flansch 10 eines Durchführungsrohres 8 durch eine Behälterwand angeschlossen ist. Auf der Außenseite des Behälters ist die Abführleitung mit einem Ventil 40 versehen. Zwischen dem Ventil 40 und einer Niederdrucksauqpumpe 42 liegt eine flexible Schlauchleitung 41. Die Käfigtrommel 26 ist zylinderförmig mit entlang des Zylindermantels angeordneten Stäben ausgebildet, die an Ringen im Innern der Trommel befestigt sind. An den Stirnenden der Käfigtrommel befinden sich Ringe zum Befestigen von Rakelauflagen.1 and 2 show a container 1 in which sucked-in sludge water 2 collects and on the bottom of which sludge 3 is deposited. Under a water surface 4 of the sludge water 2 there is a filter designed as a cage drum 26, through which the water to be discharged enters a discharge line present in a hollow support 16. The discharge line consists of a further tube 11 inside the container, which is connected to a flange 10 of a lead-through tube 8 through a container wall. The discharge line is provided with a valve 40 on the outside of the container. Between the valve 40 and a low-pressure suction pump 42 there is a flexible hose line 41. The cage drum 26 is cylindrical in shape with rods arranged along the cylinder jacket and fastened to rings in the interior of the drum. At the front ends of the cage drum there are rings for attaching doctor blades.

In der gezeigten Ausführungsform sind ein Auftriebskörper 31 und die als Grobfilter wirkende Käfigtrommel 26 zwischen zwei Trägerbügeln 15 und 16 angebracht. Die Trägerbügel sind ihrerseits drehbar an dem als Teil der Abführleitung dienenden Rohr 11 angebracht, wobei die Achse des Rohres 11 senkrecht zur Längsrichtung der beiden Träger 15 und 16 liegt. Das Rohr 11 ist fest an der Behälterwand mittels der Rohrdurchführung 8 und dem Flansch 10 und einer Haltestrebe 9 befestigt. Die beiden Halterungspunkte des Rohres 11 sind jeweils nahe den seitlichen Enden des Rohres gelegen. Zwischen dem Rohr 11 und den Trägern 15 und 16 befindet sich jeweils ein drehbarer Verbindungsflansch 13 und 14.In the embodiment shown, a buoyancy body 31 and the cage drum 26, which acts as a coarse filter, are fitted between two carrier brackets 15 and 16. The support brackets are in turn rotatably attached to the pipe 11 serving as part of the discharge line, the axis of the pipe 11 being perpendicular to the longitudinal direction of the two supports 15 and 16. The tube 11 is firmly attached to the container wall by means of the tube bushing 8 and the flange 10 and a holding strut 9. The two support points of the tube 11 are each located near the lateral ends of the tube. There is a respective one between the tube 11 and the supports 15 and 16 rotatable connecting flange 13 and 14.

Der Träger 16 ist als Hohlträger ausgebildet und stellt zusammen mit dem Durchführungsrohr 8, dem Rohr 11 und der Käfigtrommel 26 die an einem Ende auf- und niederbewegbare Abführleitung dar. Die Käfigtrommel 26 ist drehbar zwischen den Trägern 15 und 16 angebracht, und besitzt zu dem Träger 16 hin einen Drehflansch, durch den das durch die Käfigtrommel eintretende Wasser in den Hohlträger 16 eintreten kann. Die um ihre Drehachse 27 rotierende Käfigtrommel 26 wird durch einen an dem Träger 15 befestigten Antrieb 28 angetrieben. Zwischen dem Rohr 11 und der Käfigtrommel 26 ist zwischen den beiden Trägern 15 und 16 ein Abstreifer 25 gehaltert. Der Abstreifer 25 liegt auf der Käfigtrommel 26 auf und streift aufgrund der Drehbewegung der Käfigtrommel 26 außen anliegendes Grobmaterial von der Filtertrommel ab. Der Abstreifer 25 besteht aus einer Abstreiferleiste von der Länge der Käfigtrommel 26, wobei die Abstreiferleiste von drei Haltebügeln gehalten wird, die ihrerseits an einer parallel zur Achse 27 der Käfigtrommel 26 liegenden, drehbar zwischen den Trägern 15 und 16 gehaltenen Haltestange befestigt sind. An den freien Enden der beiden Träger 15 und 16 ist der Auftriebskörper 31 angebracht, der in der gezeigten Ausführungsform die Form einer Trommel besitzt und als starrer Hohlkörper ausgebildet ist. Der Auftriebskörper ist mit einer Leitung 34 verbunden. Die Leitung 34 ist an einem Flansch 35 angebracht, der auf einer durch den Behälter hindurchragenden Durchführung ausgebildet ist. Die Befestigung des trommelförmigen Auftriebskörpers erfolgt über die Auftriebskörperhalterungen 32 und 33 an den Trägern 15 und 16.The carrier 16 is designed as a hollow carrier and, together with the feed-through tube 8, the tube 11 and the cage drum 26, represents the discharge line which can be moved up and down at one end. The cage drum 26 is rotatably mounted between the carriers 15 and 16, and also has Carrier 16 out a rotary flange through which the water entering through the cage drum can enter the hollow support 16. The cage drum 26 rotating about its axis of rotation 27 is driven by a drive 28 attached to the carrier 15. A stripper 25 is held between the tube 11 and the cage drum 26 between the two supports 15 and 16. The scraper 25 rests on the cage drum 26 and, due to the rotational movement of the cage drum 26, wipes off coarse material lying on the outside of the filter drum. The scraper 25 consists of a scraper bar the length of the cage drum 26, the scraper bar being held by three holding brackets which in turn are fastened to a holding rod which is rotatably held between the carriers 15 and 16 and lies parallel to the axis 27 of the cage drum 26. At the free ends of the two carriers 15 and 16, the buoyancy body 31 is attached, which in the embodiment shown has the shape of a drum and is designed as a rigid hollow body. The buoyancy body is connected to a line 34. The line 34 is attached to a flange 35 which is formed on a bushing projecting through the container. The drum-shaped buoyancy body is fastened to the carriers 15 and 16 via the buoyancy body brackets 32 and 33.

An dem Behälter 1 ist eine Aufliegerstrebe 6 angebracht, die an ihrem Ende einen Aufliegerpuffer 7 besitzt, auf dem in einer unteren Endstellung ein Halteteil aufliegt. An seitlich hervorragenden Befestigungsstegen 17 und 18 an den Trägern 15 und 16 sind jeweils eine Spiralfeder 19 und 20 angebracht. Mit ihrem zweiten Ende sind die Spiralfedern jeweils an dem Tank 1 befestigt. Die beiden jeweiligen Befestigungspunkte an den Enden der Federn liegen dabei in unterschiedlicher Höhe, so daß die Federn aufgrund der Belastung mit der Gewichtskraft der Teile der Abführleitung vorgespannt sind. Der an der Wasseroberfläche schwimmende Auftriebskörper 31 muß daher einen geringeren Teil der Gewichtskraft der auf- und abbewegbaren Teile der Abführleitung kompensieren.A container strut 6 is attached to the container 1 and has at its end a trailer buffer 7 on which a holding part rests in a lower end position. A spiral spring 19 and 20 are attached to laterally outstanding fastening webs 17 and 18 on the supports 15 and 16, respectively. With their second end, the coil springs are each attached to the tank 1. The two respective attachment points at the ends of the springs are at different heights, so that the springs are biased due to the load with the weight of the parts of the discharge line. The floating body 31 floating on the water surface must therefore compensate for a smaller part of the weight of the parts of the discharge line which can be moved up and down.

In der Seitenansicht der Figur 1 ist ersichtlich, daß die beiden Halteträger in ihrem mittleren Bereich abgewinkelt sind. In dem nach unten weisenden Abwinkelungsbereich der beiden Träger 15 und 16 ist die Käfigtrommel 26 befestigt. Damit wird erzielt, daß die Käfigtrommel vollständig in das Wasser eintaucht, wenn bei einem Wasserstand, wie in der Zeichnung dargestellt, die Achse des Auftriebskörpers 31 und die Drehachse 12 der Haltebügel 15 und 16 in etwa die gleiche Höhe haben. Die Abwinkelung der Träger 15 und 16 könnte auch in der entgegengesetzten Richtung erfolgen, wobei die gleiche Funktion erzielt würde, wenn die Lagen der Käfigtrommel und des Auftriebskörpers miteinander vertauscht sind.In the side view of Figure 1 it can be seen that the two support beams are angled in their central region. The cage drum 26 is fastened in the downwardly angled region of the two supports 15 and 16. This ensures that the cage drum is completely immersed in the water if, at a water level, as shown in the drawing, the axis of the buoyant body 31 and the axis of rotation 12 of the holding brackets 15 and 16 have approximately the same height. The brackets 15 and 16 could also be bent in the opposite direction, the same function being achieved if the positions of the cage drum and the buoyancy body are interchanged.

Bei einer Veränderung des Wasserstandes bewegt sich der an der Wasseroberfläche 4 schwimmende Auftriebskörper 31 mit dem Wasserstand nach oben bzw. nach unten, wobei die beiden Träger 15 und 16 sich um die Drehachse 12 an dem Rohr 11 drehen. Die Käfigtrommel 26 wird in ihrer Lage bezüglich der Wasseroberfläche entsprechend dem Teilungsverhältnis ihrer Anordnung an den Trägern 15 und 16 zwischen dem Auftriebskörper und der Drehachse 12 mitbewegt. Um ein Eintauchen der Käfigtrommel 26 in die am Boden abgesetzte Schlammschicht 3 zu verhindern, ist der Auflieger 6 vorhanden, der die Bewegung des Trägers 15 nach unten begrenzt. Ein Großteil der Gewichtskraft des freien Endes der einseitig gelagerten Teile der Abführleitung wird durch die beiden Spiralfedern 19 und 20 aufgenommen. Anstatt der Spiralfedern können auch andere Arten von Federn bei einer geeignet zu wählenden Aufhängung der Federn verwendet werden. Beispielsweise können Blattfedern verwendet werden. Gemäß einer bevorzugten Ausführungsform wird eine Torsionsstabfeder zum teilweisen Aufnehmen der Gewichtskraft der Abführleitung verwendet. Der Torsionsstab liegt dabei parallel und in der Nähe zu der Drehachse 12. Während ein Ende des Torsionsstabs an dem Behälter 1 befestigt ist, ist an einem weiteren Ende des Torsionsstabs ein Aufleger rechtwinkelig angebracht, auf dem einer der Träger mit einem Gleitteil verschiebbar unterstützt ist. Der Torsionsstab kann beispielsweise in einem an dem Behälter 1 befestigten Rohr geeigneter Dimension gehaltert sein.When the water level changes, the buoyancy body 31 floating on the water surface 4 moves with the water level upwards or downwards, the two supports 15 and 16 moving about the axis of rotation 12 on the Turn tube 11. The position of the cage drum 26 with respect to the water surface is moved according to the division ratio of its arrangement on the supports 15 and 16 between the buoyancy body and the axis of rotation 12. In order to prevent the cage drum 26 from immersing itself in the sludge layer 3 deposited on the floor, the semitrailer 6 is present, which limits the downward movement of the carrier 15. A large part of the weight of the free end of the one-sided parts of the discharge line is absorbed by the two spiral springs 19 and 20. Instead of the spiral springs, other types of springs can also be used with a suitable choice of suspension of the springs. For example, leaf springs can be used. According to a preferred embodiment, a torsion bar spring is used for partially absorbing the weight of the discharge line. The torsion bar is parallel and in the vicinity of the axis of rotation 12. While one end of the torsion bar is attached to the container 1, at another end of the torsion bar a support is attached at right angles, on which one of the supports is slidably supported with a sliding part. The torsion bar can, for example, be held in a tube of suitable dimension attached to the container 1.

In einer bevorzugten Ausführungsform ist der nicht deformierbare trommelförmige Auftriebskörper 31 mit einer Zuleitung 34 verbunden, durch die der Auftriebskörper 31 mit Wasser gefüllt werden kann. Damit wird die Gewichtskraft des Auftriebskörpers 31 erhöht, so daß der Auftrieb nicht mehr ausreicht, den Auftriebskörper an der Wasseroberfläche zu halten. Dies erweist sich insbesondere dann als nützlich oder wünschenswert, wenn eine dicke Schicht von schwimmenden Stoffen 5 an der Wasseroberfläche 4 schwimmt, und die Käfigtrommel 26 unterhalb diese Schicht aus schwimmenden Stoffen 5 abgesenkt werden soll. Auch in dem Fall, daß keine Absenkung der Käfigtrommel durchgeführt wird, und der Auftriebskörper nicht mit Wasser gefüllt ist, erweist sich die Zuleitung 34 als vorteilhaft, da über die Leitung 34 festgestellt werden kann, ob eine Beschädigung des Auftriebskörpers 31 bei den rauhen Betriebsbedingungen innerhalb des Behälters 1 erfolgt ist. Eine Beschädigung des Auftriebskörpers 31 kann leicht nachgewiesen werden, da in diesem Falle Wasser durch die Leitung 34 austritt.In a preferred embodiment, the non-deformable drum-shaped buoyancy body 31 is connected to a feed line 34, through which the buoyancy body 31 can be filled with water. The weight of the buoyancy body 31 is thus increased, so that the buoyancy is no longer sufficient to keep the buoyancy body on the water surface. This proves to be particularly useful or desirable when there is a thick layer of floating substances 5 on the water surface 4 floats, and the cage drum 26 is to be lowered below this layer of floating substances 5. Even in the event that the cage drum is not lowered and the buoyancy body is not filled with water, the feed line 34 proves to be advantageous since it can be determined via the line 34 whether the buoyancy body 31 is damaged within the rough operating conditions within of the container 1 is done. Damage to the buoyancy body 31 can easily be demonstrated, since in this case water emerges through the line 34.

Neben der gezeigten Ausführungsform des Auftriebskörpers 31 in Form einer starren Trommel kann auch ein mit Gas füllbarer, deformierbarer Körper verwendet werden. Ein solcher, beispielsweise aus einem Kunststoffmaterial hergestellter Ballonkörper ist mit einer Druckgasleitung versehen, und wird je nach Bedarf mit Gas gefüllt, wodurch sich der Ballon gegen die Schwerkraft des Wassers ausdehnt und einen wirkungsvollen Auftriebskörper schafft. Die Ausdehnung des Ballons und damit die Auftriebskraft ist durch die Befüllung des Ballons mit Gas steuerbar. Es kann somit erreicht werden, daß der Filter in unterschiedlichen Tiefen unterhalb der Wasseroberfläche 4 gehalten wird, je nach der Befüllung des Ballons mit Gas. Bei einer vollständigen Füllung des Ballons wird der Filter sehr nahe an der Wasseroberfläche gehalten, bei einer mittleren Befüllung des Ballons in einem mittleren Bereich zwischen der Wasseroberfläche und der abgelagerten Schlammschicht 3, und bei einer geringen Befüllung des Ballons befindet sich der Filter nahe der Ablagerungsschicht 3 am Boden des Behälters. Die Dichtigkeit des Behälters kann über die Gasdruckfestigkeit des Systems kontrolliert werden.In addition to the embodiment of the buoyant body 31 shown in the form of a rigid drum, a deformable body which can be filled with gas can also be used. Such a balloon body, for example made of a plastic material, is provided with a pressurized gas line and is filled with gas as required, whereby the balloon expands against the gravity of the water and creates an effective buoyancy body. The expansion of the balloon and thus the buoyancy can be controlled by filling the balloon with gas. It can thus be achieved that the filter is held at different depths below the water surface 4, depending on the filling of the balloon with gas. When the balloon is completely filled, the filter is held very close to the water surface, when the balloon is filled mediumly in a middle area between the water surface and the deposited sludge layer 3, and when the balloon is filled slightly, the filter is located near the deposit layer 3 at the bottom of the container. The tightness of the container can be checked via the gas pressure resistance of the system.

Neben den bisher gezeigten Ausführungsformen des Auftriebskörpers als Hohlkörper kann auch ein Auftriebskörper als Vollkörper aus Material niederer spezifischer Dichte, wie z.B. Holz oder Styropor, verwendet werden. Bei Vollkörpern entfällt jedoch die Möglichkeit, die Auftriebskraft oder die Gewichtskraft der Anordnung zu beeinflussen und damit die Lage des Filters bezüglich der Wasseroberfläche einzustellen.In addition to the previously shown embodiments of the buoyancy body as a hollow body, a buoyancy body as a solid body made of material of low specific density, such as Wood or polystyrene. With solid bodies, however, there is no possibility of influencing the buoyancy force or the weight of the arrangement and thus adjusting the position of the filter with respect to the water surface.

Claims (12)

  1. Sludge suction vehicle with a tank (1) to which a water-jet or vacuum/pressure pump for conveying sludge is connected and in which a discharge line (8, 11, 16), one end of which is movable up and down and is provided with a filter (26), and which is connected to a float (31), is arranged upstream of the connection to the intake side of a low-pressure pump (42), characterized in that at least one spring (19, 20), tensioned to partly compensate the weight of the discharge line (8, 11, 16) is connected to the latter.
  2. Sludge suction vehicle according to Claim 1, characterized in that the filter (26) and the float (31) are both attached to first (15) and second (16) support arms which are arranged side by side and are hinged to the tank by one end so as to be pivotable about an axis (12).
  3. Sludge suction vehicle according to Claim 2, characterized in that the float (31) and the filter (26) are attached to the support arms (15, 16) in such a way that the filter (26) is at a predetermined depth below the surface of the water when the float (31) is floating on the surface of the water.
  4. Sludge suction vehicle according to Claim 3, characterized in that the support arms (15, 16) have an elbow in a central region such that the filter (26) is located below the float (31).
  5. Sludge suction vehicle according to any one of Claims 2 to 4, characterized in that at least one of the support arms (16) is hollow and serves as discharge line.
  6. Sludge suction vehicle according to any one of the preceding claims, characterized in that the float (31) is a rigid hollow body.
  7. Sludge suction vehicle according to Claim 6, characterized in that the hollow body has a connection (34) connected to a pipe (35) leading out of the tank.
  8. Sludge suction vehicle according to any one of Claims 1 to 7, characterized in that two spiral springs (19, 20) are provided, and are held between an attachment (17, 18) on the support arms (15, 16) and an attachment to the tank located above the hinge axis (12).
  9. Sludge suction vehicle according to any one of Claims 1 to 7, characterized in that a torsion spring is provided.
  10. Sludge suction vehicle according to at least one of the preceding claims, characterized in that the filter (26) consists of a rotating drum cage of bars extending parallel with the axis of rotation (27), and in that rings for scraper attachments are provided at the two ends of the drum.
  11. Sludge suction vehicle according to Claim 10, characterized in that a scraper (25) is provided at the rotating drum cage.
  12. Sludge suction vehicle according to any one of the preceding claims, characterized in that a stop is provided in a lower end position to limit the movement of the discharge line (8, 11, 16).
EP94902755A 1992-12-11 1993-12-10 Gully emptier Expired - Lifetime EP0673458B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4241888A DE4241888C1 (en) 1992-12-11 1992-12-11 Mud suction car
DE4241888 1992-12-11
PCT/EP1993/003495 WO1994013894A1 (en) 1992-12-11 1993-12-10 Gully emptier

Publications (2)

Publication Number Publication Date
EP0673458A1 EP0673458A1 (en) 1995-09-27
EP0673458B1 true EP0673458B1 (en) 1996-10-09

Family

ID=6475064

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94902755A Expired - Lifetime EP0673458B1 (en) 1992-12-11 1993-12-10 Gully emptier

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US (1) US5660725A (en)
EP (1) EP0673458B1 (en)
DE (1) DE4241888C1 (en)
DK (1) DK0673458T3 (en)
WO (1) WO1994013894A1 (en)

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DE10247634A1 (en) * 2002-10-11 2004-04-22 Müller Umwelttechnik GmbH & Co KG Vehicle for cleaning gullies/drains, by suction extraction and flushing with water, has a two-stage flushing water preparation with rotation between the filter and its scraper for efficient cleaning
DE10247635A1 (en) * 2002-10-11 2004-04-22 Müller Umwelttechnik GmbH & Co KG Cleaning vehicle for gullies/drains, using suction extraction and flushing with water, has a flushing water preparation system for the extracted water with a rotating filter and angled scraper for efficient filter cleaning
EP1593418A1 (en) * 2004-05-06 2005-11-09 Services Petroliers Schlumberger A gravity separator for a multi-phase effluent
CA2511691A1 (en) * 2004-07-08 2006-01-08 E.A.I. Technologies Mobile filtration system and method
US20060179603A1 (en) * 2005-02-14 2006-08-17 Polston Henry B Apparatus for cleaning pipes having pumping and vacuuming capability
CA2620358C (en) * 2007-03-26 2014-08-26 Alaina Carole Prokopchuk Portable water filtration device
RU2675450C2 (en) 2013-03-15 2018-12-19 Марс, Инкорпорейтед Method and apparatus for performing multiple tasks on web of material
CN105126432B (en) * 2015-08-18 2018-03-06 三川德青工程机械有限公司 Slurries separator

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Also Published As

Publication number Publication date
US5660725A (en) 1997-08-26
EP0673458A1 (en) 1995-09-27
WO1994013894A1 (en) 1994-06-23
DE4241888C1 (en) 1994-05-11
DK0673458T3 (en) 1997-03-10

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