EP0331012B1 - Device for the suction removal and delivery of fine deposits from a raw water zone into a sludge collection zone - Google Patents

Device for the suction removal and delivery of fine deposits from a raw water zone into a sludge collection zone Download PDF

Info

Publication number
EP0331012B1
EP0331012B1 EP89103183A EP89103183A EP0331012B1 EP 0331012 B1 EP0331012 B1 EP 0331012B1 EP 89103183 A EP89103183 A EP 89103183A EP 89103183 A EP89103183 A EP 89103183A EP 0331012 B1 EP0331012 B1 EP 0331012B1
Authority
EP
European Patent Office
Prior art keywords
piston
guide ring
container
piston guide
pipe
Prior art date
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.)
Expired - Lifetime
Application number
EP89103183A
Other languages
German (de)
French (fr)
Other versions
EP0331012A1 (en
Inventor
Werner Rutz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Herm J Hellmers GmbH
Original Assignee
Herm J Hellmers GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Herm J Hellmers GmbH filed Critical Herm J Hellmers GmbH
Publication of EP0331012A1 publication Critical patent/EP0331012A1/en
Application granted granted Critical
Publication of EP0331012B1 publication Critical patent/EP0331012B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • E03F7/103—Wheeled apparatus for emptying sewers or cesspools with a tank featuring one or more partition walls
    • 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 device for extracting and removing fine deposits and also those with abrasive grain character from a working water space into a sludge receiving space of a cylindrical container according to the preamble of claim 1, in particular a sewer cleaning device in a sludge suction vehicle working according to the press water method (high pressure flushing).
  • a device for example from DE-OS 3140200.
  • Channels are generally high pressure flushed with significant amounts of water.
  • the water is taken from the working water space of a cylindrical container, which is usually designed as a horizontal axis boiler.
  • the working water space is defined by a piston in the cylindrical Container is axially displaceable, separated from a sludge receiving space.
  • the piston can be non-positively and positively fixed in the cylindrical container, for example via mechanical stops or continuously by means of a pneumatically remotely controllable excess pressure in an inflatable seal against the inner container wall. Constructions of such pistons are known per se (for example DE-PS 2746199, DE-GM 8703019 and CH-PS 446211).
  • the high-pressure flushing creates sludge or dirty water, which is usually treated after being sucked out of the sewer and fed into the sludge holding room and used again as working water.
  • the high-pressure flushing device In order for the high-pressure flushing device to operate properly, it must be ensured that the working water has the greatest possible degree of cleaning.
  • a pipeline runs along the outside of the boiler, from the lower area of the working water area to the upper area of the sludge holding area. If a slide valve in the pipeline is opened, the negative pressure prevailing in the sludge receiving space sucks off working water with contaminants deposited on the floor.
  • Laying a line outside of the tank entails relatively high flow losses in the line and always sucks at a given point in the working water space.
  • the invention is therefore based on the object, the working water space of small deposits and also Keep deposits with abrasive grain character free so that the working water is as grain-free as possible and that the high-pressure flushing device functions properly.
  • the pipeline does not run along the outside of the container, but inside through the piston, preferably in the position according to claim 2.
  • the flow through the pipeline leads to entrainment of the deposits, which then get into the sludge-receiving space.
  • the stop is advantageously realized by locking bolts that can be engaged or disengaged, which can extend radially, through corresponding openings in the cylindrical container, or axially into the container, thereby enabling a gradual axial fixing of the piston.
  • the cams are advantageously designed in a wedge shape to reliably generate the gap when the piston is displaced on one side in the direction of the working water space.
  • a valve which is remotely controlled by compressed air via a flexible line is advantageously used as a shutoff for the pipeline.
  • a small chamber can be formed near the container wall in the lower container part within the piston frame through the connecting parts, which are penetrated by the pipeline, which chamber is completed in the normal shifting operation and only when the cams engage the stop due to the gap formation has an inflow / outflow opening. This has a very positive influence on the flow conditions that influence the suction.
  • the variation in the axial distance of the suction opening of the pipeline from the disk can also increase the suction effect.
  • the piston can also be used to empty the cylindrical container and the volume can be divided in an individual and continuous manner by the piston acting as a partition.
  • the drawing shows a vertical longitudinal section and a partial section through the cylindrical container (1) of a mud suction vehicle of a sewer cleaning system.
  • the cylindrical container (1) contains a working water space (3) and a sludge receiving space (4), which are separated from each other by a longitudinally displaceable and locally lockable piston (2), which consists of a piston structure (5) with a curved disc (6), one Piston guide ring (7) and axial connecting parts (8) between them.
  • the working water chamber (3) is connected to the sludge receiving chamber (4) via a pipe (12) in which a shut-off valve (13) sits and which opens between the curved disc (6) and the piston guide ring (7) in the area of the lowest surface line of the cylinder inner wall , in connection.
  • the pipe (12) sits firmly on the piston, is moved together with it and is passed through the disc (6) so that it creates the aforementioned connection between the rooms (3) and (4) when the shut-off valve (13) is open.
  • the cylindrical container (1) is opened on the corresponding side. If there is a pressure gradient between the two working surfaces of the piston (2), which can be generated in particular by a pump, for example a vacuum pump, but also by opening one side, the pressure is shifted Piston (2) in the direction of the lower pressure, if this allows the frictional relationships between the circumference of an outer ring (9) of the piston (2) and the cylinder inner wall and the piston does not touch a stop (10) in the form of two radial or disengageable locking bolt.
  • a pressure gradient between the two working surfaces of the piston (2) which can be generated in particular by a pump, for example a vacuum pump, but also by opening one side, the pressure is shifted Piston (2) in the direction of the lower pressure, if this allows the frictional relationships between the circumference of an outer ring (9) of the piston (2) and the cylinder inner wall and the piston does not touch a stop (10) in the form of two radial or disengageable locking bolt.
  • an overpressure is generated in a ring-shaped hollow chamber (14) in the outer ring (9), which is remotely controlled from the control room, via a flexible line (15) that corresponds to the circumferential geometry of the outer ring (9) greatly changed that at the same time a secure sealing of the working water space (3), which also includes the space between the curved disc (6) and the piston guide ring (7), against the sludge receiving space (4) and on the other hand an axial displacement of the piston (2) is possible.
  • the hollow chamber (14) can also be pressurized so that the piston (2) is thereby fixed to the inner wall of the cylinder.
  • the cylindrical container (1) can be divided into different partial volumes continuously and individually with the axially displaceable piston (2) with appropriate adjustment of the outer ring (9). However, it is also possible to do this division discontinuously.
  • the piston (2) is then initially fixed with the help of the outer ring (9) and is only released after a certain limit pressure difference between the working water chamber (3) and the sludge receiving chamber (4) is exceeded, in order to then shift in the direction of the lower pressure. After a certain axial displacement, a selected position can be non-positively fixed by pressurizing the hollow chambers (14) of the outer ring (9) via the flexible line (15).
  • the cleaning of the working water chamber (3) is initiated in that the entire piston (2) is axially displaced as a result of a pressure gradient generated by a pump, for example a vacuum pump, thereby reducing the volume of the working water chamber (3) until a selected point further rectified displacement of the piston (2) is prevented by the bolt-shaped stop (10).
  • a pump for example a vacuum pump
  • the suction can be repeated at several other axial positions within the cylindrical container (1).
  • the working water space (3) is cleaned of the smallest deposits and also of deposits with the character of abrasive grain in accordance with the task.
  • the great advantage of the device is that it does not hinder the high-pressure flushing of the sewer cleaning device. Only simple and low-wear machine elements are used.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Cleaning In General (AREA)
  • Sewage (AREA)
  • Treatment Of Sludge (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zur Absaugung und Abfuhr feiner Ablagerungen und auch von solchen mit Schleifkorncharakter aus einem Arbeitswasserraum in einen Schlammaufnahmeraum eines zylindrischen Behälters nach dem Oberbegriff des Anspruchs 1, insbesondere einer nach dem Preßwasserverfahren (Hochdruckspülung) arbeitenden Kanalreinigungseinrichtung bei einem Schlammsaugewagen. Eine derartige Einrichtung ist beispielsweise aus der DE-OS 3140200 bekannt.The invention relates to a device for extracting and removing fine deposits and also those with abrasive grain character from a working water space into a sludge receiving space of a cylindrical container according to the preamble of claim 1, in particular a sewer cleaning device in a sludge suction vehicle working according to the press water method (high pressure flushing). Such a device is known for example from DE-OS 3140200.

Kanäle werden im allgemeinen mit erheblichen Mengen Wassers hochdruckgespült. Das Wasser wird dem Arbeitswasserraum eines zylindrischen Behälters, der üblicherweise als Kessel mit waagrechter Achse ausgeführt ist, entnommen. Der Arbeitswasserraum wird durch einen Kolben, der in dem zylindrischen Behälter axial verschiebbar ist, von einem Schlammaufnahmeraum abgetrennt. Der Kolben kann in dem zylindrischen Behälter kraftschlüssig und formschlüssig, beispielsweise über mechanische Anschläge bzw. kontinuierlich durch einen pneumatisch fernsteuerbaren Überdruck in einer Blähdichtung gegen die innere Behälterwandung, festgelegt werden. Konstruktionen solcher Kolben sind an sich bekannt (z.B. DE-PS 2746199, DE-GM 8703019 und CH-PS 446211).Channels are generally high pressure flushed with significant amounts of water. The water is taken from the working water space of a cylindrical container, which is usually designed as a horizontal axis boiler. The working water space is defined by a piston in the cylindrical Container is axially displaceable, separated from a sludge receiving space. The piston can be non-positively and positively fixed in the cylindrical container, for example via mechanical stops or continuously by means of a pneumatically remotely controllable excess pressure in an inflatable seal against the inner container wall. Constructions of such pistons are known per se (for example DE-PS 2746199, DE-GM 8703019 and CH-PS 446211).

Durch die Hochdruckspülung entsteht Schlamm- bzw. Schmutzwasser, das nach der Absaugung aus dem Kanal und Zuführung in den Schlammaufnahmeraum meist aufbereitet wird und wieder als Arbeitswasser verwendet wird. Für den ordnungsgemäßen Betrieb der Hochdruckspüleinrichtung muß sichergestellt sein, daß das Arbeitswasser einen größtmöglichen Reinigungsgrad aufweist.The high-pressure flushing creates sludge or dirty water, which is usually treated after being sucked out of the sewer and fed into the sludge holding room and used again as working water. In order for the high-pressure flushing device to operate properly, it must be ensured that the working water has the greatest possible degree of cleaning.

Mit üblichen Vorrichtungen war es bisher nicht ausreichend möglich, Ablagerungen, die durch das Absetzen der Verunreinigungen in dem Arbeitswasserraum entstanden sind, abzusaugen. Auf Verunreinigungen sind jedoch die nachfolgenden Hochdruckpumpen empfindlich.So far, it has not been possible with conventional devices to vacuum off deposits that have arisen from the settling of the contaminants in the working water space. However, the following high pressure pumps are sensitive to contamination.

Gemäß der DE-OS 3140200 verläuft eine Rohrleitung außen am Kessel entlang, und zwar vom unteren Bereich des Arbeitswasserraums bis in den oberen Bereich des Schlammaufnahmeraums. Wird ein in der Rohrleitung befindlicher Schieber geöffnet, so saugt der im Schlammaufnahmeraum herrschende Unterdruck Arbeitswasser mit am Boden abgesetzten Verunreinigungen ab. Das Verlegen einer Leitung außerhalb des Behälters bringt verhältnismäßig hohe Strömungsverluste in der Leitung mit sich und saugt stets an einer gegebenen Stelle des Arbeitswasserraums. Während des Vorfahrens des Kolbens kann von diesem zusammengeschobenes Ablagerungsgut kann unter Umständen nicht mit erfaßt werden. Das feine Ablagerungsgut wird deshalb nicht mit ausreichender Vollständigkeit aus dem Arbeitswasserraum abgeführt.According to DE-OS 3140200, a pipeline runs along the outside of the boiler, from the lower area of the working water area to the upper area of the sludge holding area. If a slide valve in the pipeline is opened, the negative pressure prevailing in the sludge receiving space sucks off working water with contaminants deposited on the floor. Laying a line outside of the tank entails relatively high flow losses in the line and always sucks at a given point in the working water space. During the advancement of the piston, it may not be possible to detect deposits that have been pushed together by the piston. The fine deposits are therefore not removed from the working water space with sufficient completeness.

Der Erfindung liegt deshalb die Aufgabe zugrunde, den Arbeitswasserraum von kleinem Ablagerungsgut und auch von Ablagerungen mit Schleifkorncharakter frei zu halten, damit das Arbeitswasser möglichst kornfrei ist und eine einwandfreie Funktion der Hochdruckspüleinrichtung gewährleistet ist.The invention is therefore based on the object, the working water space of small deposits and also Keep deposits with abrasive grain character free so that the working water is as grain-free as possible and that the high-pressure flushing device functions properly.

Diese Aufgabe wird durch die im Anspruch 1 gekennzeichnete Erfindung gelöst. Die Rohrleitung verläuft demnach nicht außen am Behälter entlang, sondern innen durch den Kolben hindurch, und zwar bevorzugt in der Stellung nach Anspruch 2. Die Strömung durch die Rohrleitung führt dabei zu einem Mitriß der Ablagerungen, die dann in den Schlammaufnahmeraum gelangen. Gemäß einer besonders bevorzugten Ausführung nach Anspruch 3 ist es möglich, vom Arbeitswasserraum zum Schlammaufnahmeraum eine Wasserströmung zu erzeugen, die nur um den unteren Rand des Kolbenführungsrings strömt und hierbei die Ablagerungen am Boden des Arbeitswasserraums mitreißt. Da der Kolbenführungsring und der Innendurchmesser des zylindrischen Behälters voneinander um einen Betrag x abweichen, entsteht beim Angriff der Nocken am Anschlag ein Spalt der Weite x, durch den eine Absaugung der Ablagerungen erfolgt.This object is achieved by the invention characterized in claim 1. Accordingly, the pipeline does not run along the outside of the container, but inside through the piston, preferably in the position according to claim 2. The flow through the pipeline leads to entrainment of the deposits, which then get into the sludge-receiving space. According to a particularly preferred embodiment according to claim 3, it is possible to generate a water flow from the working water space to the sludge holding space, which flows only around the lower edge of the piston guide ring and thereby entrains the deposits at the bottom of the working water space. Since the piston guide ring and the inner diameter of the cylindrical container differ from each other by an amount x, a gap of width x is created when the cams engage the stop, through which the deposits are suctioned off.

Der Anschlag wird vorteilhafterweise durch ein- bzw. ausrückbare Arretierbolzen realisiert, die sich radial, durch entsprechende Öffnungen in dem zylindrischen Behälter, oder axial in den Behälter erstrecken können, wodurch eine schrittweise axiale Festlegung des Kolbens ermöglicht wird. Zur sicheren Erzeugung des Spalts bei einseitiger Verschiebung des Kolbens in Richtung zum Arbeitswasserraum sind die Nocken vorteilhafterweise keilförmig gestaltet.The stop is advantageously realized by locking bolts that can be engaged or disengaged, which can extend radially, through corresponding openings in the cylindrical container, or axially into the container, thereby enabling a gradual axial fixing of the piston. The cams are advantageously designed in a wedge shape to reliably generate the gap when the piston is displaced on one side in the direction of the working water space.

Vorteilhafterweise wird als Absperrung für die Rohrleitung ein Ventil verwendet, das durch Druckluft über eine flexible Leitung ferngesteuert wird.A valve which is remotely controlled by compressed air via a flexible line is advantageously used as a shutoff for the pipeline.

Gemäß einer speziellen Ausführung kann innerhalb des Kolbengerüsts durch die Verbindungsteile, die von der Rohrleitung durchsetzt sind, eine kleine Kammer nahe der Behälterwand im unteren Behälterteil gebildet sein, die im normalen Verschiebebetrieb abgeschlossen ist und nur bei einem Eingriff der Nocken mit dem Anschlag durch die Spaltbildung eine Zu-/Abströmöffnung aufweist. Dadurch werden die Strömungsverhältnisse, die die Absaugung beeinflussen, sehr positiv beeinflußt. Zu einer Steigerung der Absaugwirkung kann auch die Variation des axialen Abstands der Absaugöffnung der Rohrleitung von der Scheibe führen.According to a special embodiment, a small chamber can be formed near the container wall in the lower container part within the piston frame through the connecting parts, which are penetrated by the pipeline, which chamber is completed in the normal shifting operation and only when the cams engage the stop due to the gap formation has an inflow / outflow opening. This has a very positive influence on the flow conditions that influence the suction. The variation in the axial distance of the suction opening of the pipeline from the disk can also increase the suction effect.

Der Kolben kann auch zur Entleerung des zylindrischen Behälters benutzt und das Volumen kann durch den als Trennwand wirkenden Kolben in individueller und kontinuierlicher Weise aufgeteilt werden.The piston can also be used to empty the cylindrical container and the volume can be divided in an individual and continuous manner by the piston acting as a partition.

Nachfolgend wird ein bevorzugtes Ausführungsbeispiel einer erfindungsgemäßen Vorrichtung anhand der Zeichnung erläutert.A preferred embodiment of a device according to the invention is explained below with reference to the drawing.

Die Zeichnung zeigt einen vertikalen Längsschnitt und einen Teilschnitt durch den zylindrischen Behälter (1) eines Schlammsaugewagens eines Kanalreinigungssystems.The drawing shows a vertical longitudinal section and a partial section through the cylindrical container (1) of a mud suction vehicle of a sewer cleaning system.

Der zylindrische Behälter (1) enthält einen Arbeitswasserraum (3) und einen Schlammaufnahmeraum (4), die durch einen längsverschiebbaren und örtlich arretierbaren Kolben (2) voneinander getrennt sind, der aus einem Kolbengerüst (5) mit einer gewölbten Scheibe (6), einem Kolbenführungsring (7) und axialen Verbindungsteilen (8) zwischen diesen besteht. Der Arbeitswasserraum (3) steht mit dem Schlammaufnahmeraum (4) über eine Rohrleitung (12), in der ein Absperrventil (13) sitzt und die zwischen der gewölbten Scheibe (6) und dem Kolbenführungsring (7) im Bereich der untersten Mantellinie der Zylinderinnenwand mündet, in Verbindung. Die Rohrleitung (12) sitzt fest am Kolben, wird mit diesem zusammen verschoben und ist durch die Scheibe (6) so hindurchgeführt, daß sie bei geöffnetem Absperrventil (13) die erwähnte Verbindung zwischen den Räumen (3) und (4) herstellt.The cylindrical container (1) contains a working water space (3) and a sludge receiving space (4), which are separated from each other by a longitudinally displaceable and locally lockable piston (2), which consists of a piston structure (5) with a curved disc (6), one Piston guide ring (7) and axial connecting parts (8) between them. The working water chamber (3) is connected to the sludge receiving chamber (4) via a pipe (12) in which a shut-off valve (13) sits and which opens between the curved disc (6) and the piston guide ring (7) in the area of the lowest surface line of the cylinder inner wall , in connection. The pipe (12) sits firmly on the piston, is moved together with it and is passed through the disc (6) so that it creates the aforementioned connection between the rooms (3) and (4) when the shut-off valve (13) is open.

Zur Leerung des Schlammaufnahmeraums (4) wird der zylindrische Behälter (1) auf der entsprechenden Seite geöffnet. Liegt zwischen den beiden Arbeitsflächen des Kolbens (2) ein Druckgradient an, der insbesondere durch eine Pumpe, beispielsweise eine Vakuumpumpe, aber auch durch Öffnung der einen Seite erzeugt werden kann, so verschiebt sich der Kolben (2) in Richtung des geringeren Drucks, falls dies die Reibungsverhältnisse zwischen dem Umfang eines Außenrings (9) des Kolbens (2) und der Zylinderinnenwand zulassen und der Kolben nicht an einem Anschlag (10) in Form von zwei radial ein- bzw. ausrückbaren Arretierbolzen anliegt. Zur Abdichtung des Kolbens (2) gegenüber der Zylinderwand wird in eine ringförmige Hohlkammer (14) im Außenring (9) ein Überdruck, von der Bedienungswarte aus ferngesteuert, über eine flexible Leitung (15) erzeugt, der die Umfangsgeometrie des Außenrings (9) so stark verändert, daß gleichzeitig einerseits eine sichere Abdichtung des Arbeitswasserraums (3), der auch den Zwischenraum zwischen der gewölbten Scheibe (6) und dem Kolbenführungsring (7) beinhaltet, gegenüber dem Schlammaufnahmeraum (4) und andererseits eine axiale Verschiebung des Kolbens (2) möglich ist. Die Hohlkammer (14) kann aber auch so druckbeaufschlagt werden, daß der Kolben (2) hierdurch an der Zylinderinnenwand festgelegt wird.To empty the sludge holding space (4), the cylindrical container (1) is opened on the corresponding side. If there is a pressure gradient between the two working surfaces of the piston (2), which can be generated in particular by a pump, for example a vacuum pump, but also by opening one side, the pressure is shifted Piston (2) in the direction of the lower pressure, if this allows the frictional relationships between the circumference of an outer ring (9) of the piston (2) and the cylinder inner wall and the piston does not touch a stop (10) in the form of two radial or disengageable locking bolt. To seal the piston (2) against the cylinder wall, an overpressure is generated in a ring-shaped hollow chamber (14) in the outer ring (9), which is remotely controlled from the control room, via a flexible line (15) that corresponds to the circumferential geometry of the outer ring (9) greatly changed that at the same time a secure sealing of the working water space (3), which also includes the space between the curved disc (6) and the piston guide ring (7), against the sludge receiving space (4) and on the other hand an axial displacement of the piston (2) is possible. The hollow chamber (14) can also be pressurized so that the piston (2) is thereby fixed to the inner wall of the cylinder.

Während einer Hochdruckspülung eines Kanals wird Arbeitswasser höchsten Reinheitsgrades aus dem Arbeitswasserraum (3) entnommen und verschmutztes Wasser in den Schlammaufnahmeraum (4), in dem die Hauptablagerungen allen anfallenden Schmutzgutes stattfindet, eingeleitet. Die Aufteilung des zylindrischen Behälters (1) in verschiedene Teilvolumina kann kontinuierlich und individuell mit dem axialverschiebbaren Kolben (2) bei entsprechender Abstimmung des Außenrings (9) geschehen. Es ist aber auch möglich, diese Aufteilung diskontinuierlich vorzunehmen. Der Kolben (2) ist dann anfangs mit Hilfe des Außenrings (9) fixiert und wird erst nach Überschreiten eines bestimmten Grenzdruckunterschieds zwischen dem Arbeitswasserraum (3) und dem Schlammaufnahmeraum (4) freigegeben, um sich dann in Richtung des geringeren Drucks zu verschieben. Nach einer bestimmten axialen Verschiebung kann eine gewählte Position durch Druckbeaufschlagung der Hohlkammern (14) des Außenrings (9) über die flexible Leitung (15) kraftschlüssig fixiert werden.During a high-pressure flushing of a sewer, working water of the highest degree of purity is removed from the working water room (3) and contaminated water is introduced into the sludge holding room (4), in which the main deposits of all accumulating dirt material take place. The cylindrical container (1) can be divided into different partial volumes continuously and individually with the axially displaceable piston (2) with appropriate adjustment of the outer ring (9). However, it is also possible to do this division discontinuously. The piston (2) is then initially fixed with the help of the outer ring (9) and is only released after a certain limit pressure difference between the working water chamber (3) and the sludge receiving chamber (4) is exceeded, in order to then shift in the direction of the lower pressure. After a certain axial displacement, a selected position can be non-positively fixed by pressurizing the hollow chambers (14) of the outer ring (9) via the flexible line (15).

Die Reinigung des Arbeitswasserraums (3) wird dadurch eingeleitet, daß der gesamte Kolben (2) infolge eines durch eine Pumpe, beispielsweise einer Vakuumpumpe, erzeugten Druckgradienten axial verschoben wird und dadurch das Volumen des Arbeitswasserraums (3) verringert, bis an einer gewählten Stelle eine weitere gleichgerichtete Verschiebung des Kolbens (2) durch den bolzenförmigen Anschlag (10) verhindert wird. Am Kolbenführungsring (7) des Kolbens (2) sitzen keilförmige Nocken (11) mit einer querverlaufenden, axial von dem Kolbenführungsring (7) weg schrägliegenden Nockenfläche, deren Auftreffen auf den Anschlag (10) bei anliegendem Überdruck in dem Schlammaufnahmeraum (4) zu einer Anhebung des Kolbenführungsrings (7) führt, derart, daß er mit seinem oberen Teil die Behälterwand berührt und an der tiefsten Stelle des Behälters (1) ein kleiner Spalt der Weite x zwischen der Behälterinnenwand und dem Kolbenführungsring (7) entsteht. Eine entgegengesetzte axiale Verschiebung des Kolbens (2) wird durch Druckbeaufschlagung der Hohlkammer (14) des Außenrings (9) über die flexible Leitung (15) verhindert.The cleaning of the working water chamber (3) is initiated in that the entire piston (2) is axially displaced as a result of a pressure gradient generated by a pump, for example a vacuum pump, thereby reducing the volume of the working water chamber (3) until a selected point further rectified displacement of the piston (2) is prevented by the bolt-shaped stop (10). On the piston guide ring (7) of the piston (2) are seated wedge-shaped cams (11) with a transverse cam surface that slants axially away from the piston guide ring (7), the impact of which on the stop (10) in the sludge-receiving space (4) when there is excess pressure Raising the piston guide ring (7) leads such that it touches the upper part of the container wall and at the deepest point of the container (1) there is a small gap x between the inner wall of the container and the piston guide ring (7). An opposite axial displacement of the piston (2) is prevented by pressurizing the hollow chamber (14) of the outer ring (9) via the flexible line (15).

Die Umkehrung des Druckgefälles, also die Erzeugung von Überdruck in dem Arbeitswasserraum (3) bzw. von Unterdruck in dem Schlammaufnahmeraum (4), führt dazu, daß bei pneumatisch über eine flexible Leitung (16) von der Bedienungswarte des Schlammsaugewagens aus ferngesteuerter Öffnung des Ventils (13) eine Strömung durch die Rohrleitung (12) in Richtung des Schlammaufnahmeraums (4) einsetzt, die im Bereich der Ansaugöffnung der Rohrleitung (12), also im Bereich der tiefsten Stelle des zylindrischen Behälters (1) und dem Kolbenführungsring (7), besonders intensiv ist. Mit dieser Strömung werden Ablagerungen eines Schmutzgutes aus dem Arbeitswasserraum (3) über den Spalt mit der Weite x mitgerissen und in den Schlammaufnahmeraum (4) abgesaugt.The reversal of the pressure drop, i.e. the generation of overpressure in the working water space (3) or of underpressure in the sludge receiving space (4), leads to the fact that in pneumatically via a flexible line (16) from the control room of the sludge suction vehicle, the valve is opened remotely (13) a flow through the pipeline (12) in the direction of the sludge receiving space (4) starts in the area of the suction opening of the pipeline (12), i.e. in the area of the lowest point of the cylindrical container (1) and the piston guide ring (7), is particularly intense. With this flow, deposits of a dirt material are entrained from the working water space (3) over the gap with the width x and sucked off into the sludge holding space (4).

Die Absaugung kann an mehreren anderen axialen Positionen innerhalb des zylindrischen Behälters (1) wiederholt werden.The suction can be repeated at several other axial positions within the cylindrical container (1).

Dadurch wird der Arbeitswasserraum (3) von kleinstem Ablagerungsgut und auch von Ablagerungen mit Schleifkorncharakter entsprechend der Aufgabenstellung gereinigt.As a result, the working water space (3) is cleaned of the smallest deposits and also of deposits with the character of abrasive grain in accordance with the task.

Der große Vorteil der Vorrichtung ist, daß sie die Durchführung der Hochdruckspülung der Kanalreinigungseinrichtung nicht behindert. Es werden ausschließlich einfache und verschleißarme Maschinenelemente verwendet.The great advantage of the device is that it does not hinder the high-pressure flushing of the sewer cleaning device. Only simple and low-wear machine elements are used.

Claims (7)

1. A device for suction and removal of fine deposits from an industrial water zone (3) to a sludge collecting zone (4) in a cylindrical container (1) which is divided into the industrial water zone (3) and the sludge collecting zone (4) by a piston (2) which is axially movable in the cylindrical chamber (1) and can be secured non-positively therein or positively via an abutment (10), a closable pipe (12) open at both ends being disposed between zones (3) and (4) and its opening on the side of the industrial water zone is near the inner wall of the container in the bottom part thereof, the piston (2) comprising a frame (5) in which a disc (6) and a piston guide ring (7) are interconnected by connecting parts (8) and enclose an intermediate space between them, characterised in that the pipe (12) extends inside the container (1) and through the disc (6) of the piston (2).
2. A device according to claim 1, characterised in that the pipe (12) is disposed on the piston (2) and, on the side of the industrial water zone, opens between the disc (6) and the piston guide ring (7) sliding in the industrial water zone, and a flow opening (x) is disposed at the bottom edge of the piston guide ring near the opening of pipe (12) on the side of the industrial water chamber and axially enclosed by the piston frame (5), when the piston guide ring (7) is in the position adjacent the abutment (10).
3. A device according to claim 2, characterised in that the outer diameter of the piston guide ring (7) is less by an amount (x) than the inner diameter of the cylindrical container (1), and the piston guide ring (7), on the side of the abutment, has cams (11) which engage the abutment (10) to raise and press the piston guide ring (7) against the upper container wall in the upper region of the container.
4. A device according to claim 3, characterised in that the abutment (10) comprises bolts which extend radially or axially into the cylindrical container (1).
5. A device according to claim 3 or 4, characterised in that the cams (11) are wedge-shaped.
6. A device according to any of claims 1 to 5, characterised in that a small chamber which intensifies the suction effect is formed near the container wall in the bottom part of the container and inside the piston frame (5), by the connecting parts (8), through which the pipe (12) extends.
7. A device according to any of claims 1 to 6, characterised in that the suction opening of the pipe (12) is at a variable axial distance from the piston guide ring (7).
EP89103183A 1988-03-01 1989-02-23 Device for the suction removal and delivery of fine deposits from a raw water zone into a sludge collection zone Expired - Lifetime EP0331012B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3806545A DE3806545A1 (en) 1988-03-01 1988-03-01 DEVICE FOR EXTRACTION AND EXTRACTION OF FINE DEPOSITS FROM A WORKING WATER SPACE IN A SLUDGE SPACE
DE3806545 1988-03-01

Publications (2)

Publication Number Publication Date
EP0331012A1 EP0331012A1 (en) 1989-09-06
EP0331012B1 true EP0331012B1 (en) 1991-12-11

Family

ID=6348521

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89103183A Expired - Lifetime EP0331012B1 (en) 1988-03-01 1989-02-23 Device for the suction removal and delivery of fine deposits from a raw water zone into a sludge collection zone

Country Status (3)

Country Link
EP (1) EP0331012B1 (en)
DE (2) DE3806545A1 (en)
DK (1) DK171749B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10025645C2 (en) * 2000-05-24 2002-04-04 Kutschke Fahrzeugbau Gmbh Container for a cleaning vehicle

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB484716A (en) * 1936-11-13 1938-05-10 Dennis Brothers Ltd Sludge containers, particularly for use with mechanical gulley-emptying apparatus
AT257481B (en) * 1966-02-02 1967-10-10 Josef Kaiser Fahrzeugwerk Container for holding liquids and / or gases under pressure
DE2746199C2 (en) * 1977-10-14 1986-09-04 Fa. Friedrich Küller, 5600 Wuppertal Container for holding sludge or the like.
EP0075603A1 (en) * 1981-09-21 1983-04-06 GABLER GmbH & Co., KG. Device for cleaning sewer pipes and for exhausting mud
DE3140200A1 (en) * 1981-10-09 1983-04-28 Herm. J. Hellmers Gmbh, 2000 Hamburg Sewer-cleaning vehicle
DE8703019U1 (en) * 1987-02-27 1987-05-27 Wiedemann, Karl, 86465 Welden Device for receiving bulk material

Also Published As

Publication number Publication date
DE3806545A1 (en) 1989-09-14
DE3806545C2 (en) 1991-02-07
DE58900544D1 (en) 1992-01-23
EP0331012A1 (en) 1989-09-06
DK92489A (en) 1989-09-02
DK171749B1 (en) 1997-05-05
DK92489D0 (en) 1989-02-27

Similar Documents

Publication Publication Date Title
DE69003460T2 (en) Internal mixer.
DE102018131517A1 (en) Pump storage device and this comprehensive means of transport
DE19810912A1 (en) Suction and discharge device for a rinsing liquid
DE69617421T2 (en) METHOD FOR CONTROLLING A CENTRIFUGAL PUMP AND VACUUM PUMP COMBINATION AND A CENTRIFUGAL PUMP FOR GAS SEPARATION
DE2322155C2 (en) Rotary pressure filter
DE10164810B4 (en) Water treatment system for raw and rainwater
DE3134861C2 (en) Magnetic filter
CH683013A5 (en) Saugdruckfass.
EP0331012B1 (en) Device for the suction removal and delivery of fine deposits from a raw water zone into a sludge collection zone
DE4017013A1 (en) Equipment for cleaning well shafts - involves staged frame moving along shaft walls with horizontal dividers forming sealed chambers
DE3930918A1 (en) Combination sludge extractor and flusher
DE2327532B2 (en) Liquid filter with automatic cleaning
DE2929625C2 (en)
DE4029603C3 (en) Conveying device for liquid media containing bulky substances, in particular waste water
DE3029197A1 (en) Sewer cleaning and mud suction vehicle tank - has piston sliding to vary filtered water chamber length and other chamber sizes
DE1097660B (en) Filter device for an extruder
DE1786223C (en)
DE8911344U1 (en) Combined sludge suction and high-pressure flushing vehicle with water recovery
EP0878587B1 (en) Vacuum sewage removal installation
DE2540672A1 (en) SPECIFIC SEPARATOR FOR PNEUMATIC SUCTION CONVEYOR SYSTEMS, IN PARTICULAR FOR LOADING PLASTIC PROCESSING MACHINERY
EP0075603A1 (en) Device for cleaning sewer pipes and for exhausting mud
AT391508B (en) Sludge-suction and high-pressure-flushing vehicle for cleaning sewer ducts or the like
EP0150819A2 (en) Device and method for wet cleaning of coking furnaces
EP0138927B1 (en) Piston pump for liquid media contaminated by solid materials
DE3501577A1 (en) WATER BLOWING DEVICE

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR IT SE

17P Request for examination filed

Effective date: 19900302

17Q First examination report despatched

Effective date: 19910502

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR IT SE

REF Corresponds to:

Ref document number: 58900544

Country of ref document: DE

Date of ref document: 19920123

ITF It: translation for a ep patent filed

Owner name: ST. DR. CAVATTONI ING. A. RAIMONDI

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19930204

Year of fee payment: 5

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19940224

EUG Se: european patent has lapsed

Ref document number: 89103183.3

Effective date: 19940910

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20010227

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20010428

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020903

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20021031

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050223