EP1039054B1 - Method and device for cleaning a basin - Google Patents

Method and device for cleaning a basin Download PDF

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Publication number
EP1039054B1
EP1039054B1 EP00105802A EP00105802A EP1039054B1 EP 1039054 B1 EP1039054 B1 EP 1039054B1 EP 00105802 A EP00105802 A EP 00105802A EP 00105802 A EP00105802 A EP 00105802A EP 1039054 B1 EP1039054 B1 EP 1039054B1
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EP
European Patent Office
Prior art keywords
shut
reservoir
jet nozzles
devices
jet
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EP00105802A
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German (de)
French (fr)
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EP1039054A3 (en
EP1039054A2 (en
Inventor
Peter Szlama
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KSB AG
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KSB AG
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Publication of EP1039054A3 publication Critical patent/EP1039054A3/en
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    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/10Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
    • E03F5/105Accessories, e.g. flow regulators or cleaning devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/08Cleaning containers, e.g. tanks
    • B08B9/093Cleaning containers, e.g. tanks by the force of jets or sprays
    • B08B9/0933Removing sludge or the like from tank bottoms

Definitions

  • the invention relates to a method for aerating and / or keeping clean a basin, which serves to receive a loaded with solids liquid and provided with near the bottom of the basin and attached to an end wall jet pipes that put the pool contents in a recirculation flow, one or more centrifugal pumps , whose flow is passed through several, provided with upstream shut-off jet nozzles in the pool, the individual shut-off devices are opened and closed by means of a control in a particular system requirements adapted clock.
  • EP 0 257 298 B1 discloses a further method and a device of the type mentioned at the outset, by means of which a cleaning action which substantially exceeds the recirculation flow is achieved by introducing a shock wave flow into the liquid in the basin. If the swirling effect exerted on the solids by the recirculation flow strongly decreases with the distance from the circulation aggregate, the shockwave flow generates progressive wave trains with a coupling effect whose intensive cleaning action decreases only slightly over a longer distance. During the emptying of the residue, a targeted large-area cleaning flow through rolling waves is achieved by means of a flow-directing and area-covering effect, which leads to a thorough fluidization and discharge of solids.
  • US Pat. No. 5,078,799 A discloses a process for mobilizing an oil sludge for a crude oil tank.
  • the tank lid is formed like a raft floating and serves to accommodate vertically immersed in the basin recirculation and suction.
  • spaced apart lance-like means only a one-time influence in the region of the pelvic floor can be achieved.
  • a computer system is used to control the complexity of the nozzle assemblies.
  • a first external radiant tube works in the work-pausing operation and serves for the mixing of a basin contents as well as the cleaning of the basin sidewall.
  • a switchover to a second jet pipe arranged in the middle of the basin end wall and a change to continuous operation takes place for cleaning the middle of the basin. Only in this phase flushes the centrally arranged second jet pipe previously swirled from the side of the first jet pipe to the center of the basin deposits from the basin out.
  • the invention has for its object to provide a method of the type mentioned above and an apparatus for performing this method, which are suitable even very wide pool, as well as basins with arranged in the floor area partitions or cascades to clean completely with little effort and to ventilate.
  • the stated object is achieved in that the jet nozzles each individually and successively use, so as to produce a powerful flow, which extends due to its continuous change over the entire pool width.
  • the inventive method is especially suitable for very wide basins, for basins with longitudinal partitions or cascades, for basins with a slight slope and for energy-related facilities.
  • the method allows the arrangement of a plurality of jet nozzles, which only one or, in the worst case, a few centrifugal pumps must be fed.
  • the shut-off devices upstream of all jet nozzles make it possible for individual jet nozzles or several jet nozzles to be supplied together with a delivery pressure sufficient for the ventilation or cleaning operation by a centrifugal pump.
  • An alternative embodiment of the method according to the invention provides that the control of the shut-off devices is carried out so that in each case a plurality of simultaneously operated jet nozzles, a flow is passed into the basin.
  • flow rates can be generated, which influence and complement each other in a manner increasing the ventilation and cleaning performance.
  • each shut-off device can be controlled so that emerges from the downstream jet nozzle a shock wave flow.
  • control of various shut-off devices can be designed so that supplement the exiting from different jet streams flow to a resulting shock wave flow.
  • the control of the centrifugal pump or the centrifugal pumps and / or the shut-off devices can be stored by means of a stored in a computer unit Program done.
  • Program done Such a program can be used to automatically adapt to all the expected states of a system. For example, various presets and measurements taken at different locations may be included in the course of the program.
  • a device using the method according to the invention for a basin with a floor divided in the longitudinal direction by intermediate walls or cascades provides that a jet nozzle is provided for each individual one of the longitudinally extending floor areas.
  • a single centrifugal pump via a branching pipeline all jet nozzles of the system charged with liquid.
  • a device using the method according to the invention can also be provided with a plurality of centrifugal pumps arranged in parallel, each of which feeds a part of the jet nozzles with liquid.
  • the jet angle and the jet direction of the jet nozzles are adjustable.
  • the jet nozzles are designed as injectors, which suck air via a ventilation pipe in the guided over them flow rate.
  • the device of Figs. 1 to 3 is arranged in a basin, not shown here. It has a driven by an electric motor 1 centrifugal pump 2, which is supported by a suspension device 3.
  • the suspension device 3 is fixed by means of a sheet 4 at the bottom of the basin; it also carries a trouser tube 5, which forwards the liquid conveyed by the centrifugal pump 2 into two distributor tubes 6. From the distribution pipes 6 go four humpback pipes 7, at the end of each one actuated by a servo motor 8 shut-off device 9 is provided.
  • Such a shut-off device 9 is in each case connected upstream of a jet nozzle 10 designed as an injector.
  • a venting line 11 opening into the jet nozzle 10 is provided, the suction opening of which lies above the highest possible liquid level in the basin.
  • the operation of the computer unit is carried out by means of a program which, depending on predetermined and currently measured data, the operation of Device controls.
  • a program which, depending on predetermined and currently measured data, the operation of Device controls.
  • the program of the central computer unit of the electric motor 1 of the centrifugal pump 2 is switched on and off as needed and taking into account any necessary rest periods.
  • individual shut-off devices 9 are opened or closed via the servo motors.
  • shut-off device 9 can be opened while the other shut-off devices 9 are closed. This state can be maintained for a predetermined period, so that the flow generated by the centrifugal pump 2 is passed exclusively via a jet nozzle 10 in the basin. At the end of the predetermined time, this first shut-off device 9 can now be closed and at the same time a second shut-off device 9 can be opened.
  • This may be the shut-off device 9 of an adjacent jet nozzle 10 or a more distant jet nozzle 10.
  • the jet nozzles 10 can also come into operation with any order and duration successively. For the sequence of the jet nozzles and their jet duration, the respective Anlagenerfordemisse are relevant.
  • the running in the computer unit program uses the experience gained during the operation of such a system and knowledge to control the various shut-9.
  • the individual cycles for controlling the shut-off devices can also be carried out with the aid of a simpler, fixed preset program, for example stored in a chip. Even a manual control can meet the requirements of the system at least for a certain period of time.
  • the program stored in a computer unit has the advantage that it can cope with a large number of constantly changing requirements over a theoretically unlimited period of time and that it can even be reprogrammed into individual parts with regard to necessary or recommended adjustments and additions.
  • the program stored in the computer unit can also easily control the flow of more complicated operations.
  • each individual servomotor 8 in such a way that shock waves are generated in the blast nozzle 10 and the pelvic area behind it as a result of the opening and closing shut-off device.
  • the streams delivered from two different jet nozzles 10 can be influenced so as to give a resultant shock wave flow.
  • FIGS. 4 and 5 operates essentially according to the principle presented above. However, the system shown in Figs. 4 and 5 differs in some significant respects from a system as described in the embodiment of FIGS. 1 to 3. It is noteworthy, above all, that the basin 13 used here is provided with cascades 14 extending in the longitudinal direction.
  • each jet nozzle 12 is provided for each of these bottom regions 17.
  • the jet nozzles 12 are preceded in each case by a shut-off device actuated by a lifting magnet 18 (not visible in FIGS. 4 and 5).
  • the shut-off device which is formed by a throttle valve, and whose arranged on a vent tube 19 solenoid 18 substantially correspond to the embodiment shown in EP 0 257 298 B1 as an example.
  • each individual jet nozzle 12 can operate in the manner described in the cited document. This means that each of the jet nozzles 12 can generate a far-reaching shock wave flow in its associated floor area 17, while the remaining jet nozzles 12 can remain inactive during this time.
  • the individual floor areas 17 can therefore be cleaned successively and largely independently of each other.
  • several jet nozzles 12 can work simultaneously in this embodiment. Due to the cascades 14 but is expected to have a slightly different effect than a smooth pelvic floor.

Abstract

The ventilation and/or cleaning process for tanks for fluids containing solids. One or more rotary pumps (2) supply a fluid flow into the tank via several injection nozzles (10) with shut-off devices positioned in front. Individual shut-off devices are opened and closed by a regulator unit in a pattern dependent upon the requirements of the installation, so that individual fluid jets are directed into the tank one after the other. Rotary pumps and/or shut-off devices are regulated via a computer program.

Description

Gegenstand der Erfindung sind ein Verfahren zur Belüftung und/oder Reinhaltung eines Beckens, welches der Aufnahme einer mit Feststoffen belasteten Flüssigkeit dient und mit nahe der Beckensohle und an einer Stirnwand angebrachten Strahlrohren, die den Beckeninhalt in eine Umwälzströmung versetzen, eine oder mehrere Kreiselpumpen vorgesehen sind, deren Förderstrom über mehrere, mit vorgeschalteten Absperreinrichtungen versehene Strahldüsen in das Becken geleitet wird, wobei die einzelnen Absperreinrichtungen mittels einer Steuerung in einem den jeweiligen Anlagenerfordernissen angepaßten Takt geöffnet und geschlossen werden.The invention relates to a method for aerating and / or keeping clean a basin, which serves to receive a loaded with solids liquid and provided with near the bottom of the basin and attached to an end wall jet pipes that put the pool contents in a recirculation flow, one or more centrifugal pumps , whose flow is passed through several, provided with upstream shut-off jet nozzles in the pool, the individual shut-off devices are opened and closed by means of a control in a particular system requirements adapted clock.

Ein derartiges Verfahren und eine solche Vorrichtung sind bekannt durch die DE 32 44 539 C2. Mit Hilfe einer Einrichtung, die aus mehreren nahe der Beckensohle angebrachten Strahlrohren besteht, wird dort der Inhalt des Beckens in eine Umwälzströmung versetzt. Die in der im Becken vorhandenen Flüssigkeit befindlichen Schmutzteilchen werden auf diese Weise von der Beckensohle aufgewirbelt und in der Schwebe gehalten. Eine Reinigung des Beckens während der letzten Phase der Beckenentleerung ergibt sich bereits dadurch, daß bei abnehmendem Beckeninhalt die Energiedichte und damit die Reinigungsleistung ansteigt. Auch nach vollständiger Entleerung des Beckens kann noch durch die aus den Strahlrohren austretende Flüssigkeit der Beckenboden abgespritzt werden.Such a method and such a device are known from DE 32 44 539 C2. With the help of a device that consists of several mounted near the bottom of the basin radiant tubes, where the contents of the basin is placed in a recirculation flow. The debris present in the existing liquid in the basin are swirled up in this way from the pelvic floor and held in suspension. A cleaning of the pelvis during the last phase of pelvic emptying already results from the fact that with decreasing pelvic contents, the energy density and thus the cleaning performance increases. Even after complete emptying of the pelvis, the pelvic floor can still be hosed down by the liquid emerging from the lance tubes.

In der DE 32 44 539 C2 wird im übrigen noch gelehrt, daß die Strahlrohre mit spitzem Winkel auf die Seitenwände oder zur Beckensohle hin gerichtet oder schwenkbar sein können. Weitere Angaben über die Anordnung der Strahlrohre werden aber nicht gemacht.In DE 32 44 539 C2 is also taught that the jet pipes directed at an acute angle to the side walls or the pelvic floor or can be swiveled. Further information about the arrangement of the jet pipes are not made.

Durch die EP 0 257 298 B1 sind ein weiteres Verfahren und eine Vorrichtung der eingangs genannten Art bekannt, durch die eine gegenüber der Umwälzströmung wesentlich weiter reichende Reinigungswirkung dadurch erzielt wird, daß in die im Becken befindliche Flüssigkeit eine Stoßwellen-Strömung eingeleitet wird. Nimmt die von der Umwälzströmung auf die Feststoffe ausgeübte aufwirbelnde Wirkung mit der Entfernung vom Umwälzaggregat stark ab, so erzeugt die Stoßwellen-Strömung fortschreitende Wellenzüge mit Koppeleffekt, deren intensive Reinigungswirkung auch auf einer längeren Strecke nur geringfügig abnimmt. Bei der Restentleerung wird durch eine strömungsrichtende und flächendeckende Wirkung eine gezielte großflächige Reinigungsströmung durch rollende Wellen erreicht, die zu einer gründlichen Aufwirbelung und Austragung von Feststoffen führt.EP 0 257 298 B1 discloses a further method and a device of the type mentioned at the outset, by means of which a cleaning action which substantially exceeds the recirculation flow is achieved by introducing a shock wave flow into the liquid in the basin. If the swirling effect exerted on the solids by the recirculation flow strongly decreases with the distance from the circulation aggregate, the shockwave flow generates progressive wave trains with a coupling effect whose intensive cleaning action decreases only slightly over a longer distance. During the emptying of the residue, a targeted large-area cleaning flow through rolling waves is achieved by means of a flow-directing and area-covering effect, which leads to a thorough fluidization and discharge of solids.

Nun stellt aber die Belüftung und Reinigung breiterer Beckens ein Problem dar, dem man bisher nur mit großem Aufwand zu begegnen vermochte. Eine erste Möglichkeit wurde darin gesehen, mehrere mit Strahldüsen versehene Kreiselpumpen nebeneinander so anzuordnen, daß jeweils die gesamte Beckenbreite von umwälzenden und reinigenden Flüssigkeitsstrahlen erfaßt wurde. Ein Beispiel hierfür gibt die DE 39 23 820 A1, die eine Anlage mit zwei Kreiselpumpen zeigt, deren Strahlrohre gegen die Seitenwände des Beckens so gerichtet sind, daß sich die von ihnen erzeugten Umwälzströmungen in der Längsachse des Beckens treffen.Now, however, the ventilation and cleaning of wider pelvis is a problem that was previously encountered only with great effort. A first possibility was seen to arrange a plurality of centrifugal pumps provided with jet nozzles side by side so that in each case the entire pool width was detected by revolving and cleaning liquid jets. An example of this is the DE 39 23 820 A1, which shows a system with two centrifugal pumps, the jet pipes are directed against the side walls of the basin so that meet the circulating currents generated by them in the longitudinal axis of the basin.

Eine weitere, vielfach auch zur vollen Zufriedenheit arbeitende Möglichkeit besteht darin, das Strahlrohr, gegebenenfalls auch die Pumpe, schwenkbar auszuführen und mittels eines Antriebes über einen vorgegebenen Winkelbereich zu verschwenken. Die DE 37 00 055 C2 und die DE 89 09 000 U1 zeigen Beispiele für eine solche Lösung. Allerdings ist auch diese Lösung nicht in jedem Fall und für jeden Becken geeignet. Vor allem, wenn in dem Becken in Längsrichtung verlaufende Kaskaden angeordnet sind, muß diese Ausführung versagen, da ihr Reinigungsstrahl allenfalls den Anfang der meisten der in Längsrichtung verlaufenden Bodenbereiche erreicht.Another, often also working to full satisfaction option is to perform the jet pipe, possibly also the pump, pivotable and to pivot by means of a drive over a predetermined angular range. DE 37 00 055 C2 and DE 89 09 000 U1 show examples of such a solution. However, even this solution is not in every case and suitable for every pool In particular, when arranged in the basin in the longitudinal direction cascades, this design must fail, since their cleaning jet reaches at most the beginning of most of the longitudinally extending floor areas.

Durch die US 5 078 799 A ist für einen crude oil Tank ein Verfahren zur Mobilisierung eines Ölschlammes bekannt. Dazu ist der Tankdeckel floßartig schwimmend ausgebildet und dient zur Aufnahme von senkrecht in das Becken eintauchende Umwälz- und Absaugeinrichtungen. Mit Hilfe dieser von oben in den Tank eintauchenden, mit Abstand zueinander angeordneten lanzenartigen Mittel kann jedoch immer nur eine punktuelle Beeinflussung im Bereich des Beckenbodens erreicht werden. Zur Ansteuerung der senkrechten Lanzen dient ein Computersystem, um die Komplexität der Düsenanordnungen zu beherrschen.US Pat. No. 5,078,799 A discloses a process for mobilizing an oil sludge for a crude oil tank. For this purpose, the tank lid is formed like a raft floating and serves to accommodate vertically immersed in the basin recirculation and suction. However, with the help of this, from above into the tank immersed, spaced apart lance-like means, however, only a one-time influence in the region of the pelvic floor can be achieved. To control the vertical lances, a computer system is used to control the complexity of the nozzle assemblies.

Die DE 36 17 111 A1 verwendet für eine Beckenreinigung zwei in Richtung des Beckenbodens verlaufende Strahlrohre, die nacheinander in Betrieb gesetzt werden. Ein erstes außenliegendes Strahlrohr arbeitet im Arbeits-Pausentaktbetrieb und dient zur Aufmischung eines Beckeninhalts sowie der Reinigung der Beckenseitenwand. Während der Restphase einer Entleerung eines Regenüberlaufbeckens erfolgt zur Reinigung der Beckenmitte eine Umschaltung auf ein in der Mitte der Beckenstirnwand angeordnetes zweites Strahlrohr und eine Wechsel auf Dauerbetrieb. Nur in dieser Phase spült das mittig angeordnete 2. Strahlrohr die zuvor vom seitlichen 1. Strahlrohr zur Beckenmitte gewirbelten Ablagerungen aus dem Becken heraus.DE 36 17 111 A1 uses for pelvic cleaning two extending in the direction of the pelvic floor jet pipes, which are set in succession. A first external radiant tube works in the work-pausing operation and serves for the mixing of a basin contents as well as the cleaning of the basin sidewall. During the remaining phase of emptying a rain overflow basin, a switchover to a second jet pipe arranged in the middle of the basin end wall and a change to continuous operation takes place for cleaning the middle of the basin. Only in this phase flushes the centrally arranged second jet pipe previously swirled from the side of the first jet pipe to the center of the basin deposits from the basin out.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren der eingangs genannten Art und eine Vorrichtung zur Durchführung dieses Verfahrens zu schaffen, welche geeignet sind, auch sehr breite Becken, ebenso wie Becken mit im Bodenbereich angeordneten Zwischenwänden oder Kaskaden, mit geringem Aufwand vollständig zu reinigen und zu belüften.The invention has for its object to provide a method of the type mentioned above and an apparatus for performing this method, which are suitable even very wide pool, as well as basins with arranged in the floor area partitions or cascades to clean completely with little effort and to ventilate.

Die gestellte Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Strahldüsen jeweils einzeln und nacheinander einzusetzen, um so einen kraftvollen Förderstrom zu erzeugen, der sich aufgrund seiner fortlaufenden Veränderung über die gesamte Beckenbreite erstreckt.The stated object is achieved in that the jet nozzles each individually and successively use, so as to produce a powerful flow, which extends due to its continuous change over the entire pool width.

Das erfindungsgemäße Verfahren ist vor allem geeignet für sehr breite Becken, für Becken mit längsgerichteten Zwischenwänden oder Kaskaden, für Becken mit geringem Gefälle und für energiegebundene Anlagen. Das Verfahren erlaubt die Anordnung einer Vielzahl von Strahldüsen, die nur von einer oder, im ungünstigen Fall, einigen wenigen Kreiselpumpen gespeist werden müssen. Die allen Strahldüsen vorgeschalteten Absperreinrichtungen ermöglichen es, daß jeweils einzelne Strahldüsen oder mehrere Strahldüsen gemeinsam mit einem für den Belüftungs- oder Reinigungsbetrieb ausreichenden Förderdruck von einer Kreiselpumpe beliefert werden können.The inventive method is especially suitable for very wide basins, for basins with longitudinal partitions or cascades, for basins with a slight slope and for energy-related facilities. The method allows the arrangement of a plurality of jet nozzles, which only one or, in the worst case, a few centrifugal pumps must be fed. The shut-off devices upstream of all jet nozzles make it possible for individual jet nozzles or several jet nozzles to be supplied together with a delivery pressure sufficient for the ventilation or cleaning operation by a centrifugal pump.

Eine alternative Ausgestaltung des erfindungsgemäßen Verfahrens sieht vor, daß die Steuerung der Absperreinrichtungen so erfolgt, daß jeweils über mehrere gleichzeitig betriebene Strahldüsen ein Förderstrom in den Beckens geleitet wird. Hierdurch können Förderströme erzeugt werden, die sich in einer die Belüftungs- und Reinigungsleistung steigernden Weise beeinflussen und ergänzen.An alternative embodiment of the method according to the invention provides that the control of the shut-off devices is carried out so that in each case a plurality of simultaneously operated jet nozzles, a flow is passed into the basin. As a result, flow rates can be generated, which influence and complement each other in a manner increasing the ventilation and cleaning performance.

Da mittels des erfindungsgemäßen Verfahrens eine beliebige Steuerung der den Strahldüsen vorgeschalteten Absperreinrichtungen möglich ist, kann auch jede Absperreinrichtung so gesteuert werden, daß aus der ihr nachgeschalteten Strahldüse eine Stoßwellen-Strömung austritt. Außerdem kann die Steuerung verschiedener Absperreinrichtungen so ausgelegt sein, daß sich die aus verschiedenen Strahldüsen austretenden Förderströme zu einer resultierenden Stoßwellen-Strömung ergänzen.Since by means of the method according to the invention any control of the jet nozzles upstream shut-off devices is possible, and each shut-off device can be controlled so that emerges from the downstream jet nozzle a shock wave flow. In addition, the control of various shut-off devices can be designed so that supplement the exiting from different jet streams flow to a resulting shock wave flow.

Die Steuerung der Kreiselpumpe bzw. der Kreiselpumpen und/oder der Absperreinrichtungen kann mittels eines in einer Rechnereinheit gespeicherten Programmes erfolgen. Mit einem solchen Programm kann eine automatische Anpassung an alle zu erwartenden Zustände einer Anlage erfolgen. So können beispielsweise verschiedene Voreinstellungen und an verschiedenen Orten erfolgende Messungen in den Ablauf des Programms einbezogen werden.The control of the centrifugal pump or the centrifugal pumps and / or the shut-off devices can be stored by means of a stored in a computer unit Program done. Such a program can be used to automatically adapt to all the expected states of a system. For example, various presets and measurements taken at different locations may be included in the course of the program.

Eine das erfindungsgemäße Verfahren nutzende Vorrichtung für einen Becken mit einem in Längsrichtung durch Zwischenwände oder Kaskaden aufgeteilten Boden sieht vor, daß für jeden einzelnen der in Längsrichtung verlaufenden Bodenbereiche eine Strahldüse vorgesehen ist.A device using the method according to the invention for a basin with a floor divided in the longitudinal direction by intermediate walls or cascades provides that a jet nozzle is provided for each individual one of the longitudinally extending floor areas.

Für den größten Teil der in Frage kommenden Becken dürfte es ausreichend sein, wenn eine einzelne Kreiselpumpe über eine sich verzweigende Rohrleitung alle Strahldüsen der Anlage mit Flüssigkeit beschickt. Eine das erfindungsgemäße Verfahren nutzende Vorrichtung kann aber selbstverständlich auch mit mehreren parallel angeordneten Kreiselpumpen versehen sein, die jeweils einen Teil der Strahldüsen mit Flüssigkeit beschicken.For the greater part of the pool in question, it should be sufficient if a single centrifugal pump via a branching pipeline all jet nozzles of the system charged with liquid. Of course, a device using the method according to the invention can also be provided with a plurality of centrifugal pumps arranged in parallel, each of which feeds a part of the jet nozzles with liquid.

Um die Reinigungswirkung der Strahldüsen zu erhöhen, kann es vorteilhaft sein, wenn der Strahlwinkel und die Strahlrichtung der Strahldüsen einstellbar sind. Vor allem ist es von Vorteil, wenn die Strahldüsen als Injektoren ausgebildet sind, welche über ein Belüftungsrohr Luft in den über sie geleiteten Förderstrom einsaugen.In order to increase the cleaning effect of the jet nozzles, it may be advantageous if the jet angle and the jet direction of the jet nozzles are adjustable. Above all, it is advantageous if the jet nozzles are designed as injectors, which suck air via a ventilation pipe in the guided over them flow rate.

Anhand zweier Ausführungsbeispiele wird die Erfindung näher erläutert. Die Zeichnung zeigt in

Fig. 1
die Seitenansicht einer das erfindungsgemäße Verfahren nutzenden Vorrichtung,
Fig. 2
eine Ansicht der Vorrichtung der Fig. 1 mit Blickrichtung zur entfernt liegenden Wand des die Vorrichtung aufnehmenden Beckens,
Fig. 3
eine Draufsicht auf die Vorrichtung der Fig. 1 und 2,
Fig. 4
eine weitere, das erfindungsgemäße Verfahren nutzende Vorrichtung, die hier in einem mit in Längsrichtung verlaufenden Kaskaden versehenen Becken angeordnet ist,
Fig. 5
eine Draufsicht auf die Vorrichtung und das Becken der Fig. 4.
Based on two embodiments, the invention will be explained in more detail. The drawing shows in
Fig. 1
the side view of a device using the method according to the invention,
Fig. 2
1 is a view of the device of FIG. 1 looking towards the far wall of the device receiving basin,
Fig. 3
a top view of the device of FIGS. 1 and 2,
Fig. 4
a further device using the method according to the invention, which is arranged here in a basin provided with cascades running in the longitudinal direction,
Fig. 5
a plan view of the device and the basin of Fig. 4th

Die Vorrichtung der Fig. 1 bis 3 ist in einem hier nicht dargestellten Becken angeordnet. Sie verfügt über eine von einem Elektromotor 1 angetriebene Kreiselpumpe 2, welche von einer Einhängevorrichtung 3 getragen wird. Die Einhängevorrichtung 3 ist mittels eines Bleches 4 am Boden des Beckens befestigt; sie trägt im übrigen ein Hosenrohr 5, das die von der Kreiselpumpe 2 geförderte Flüssigkeit in zwei Verteilerrohre 6 weiterleitet. Von den Verteilerrohren 6 gehen vier Buckelrohre 7 aus, an deren Ende jeweils eine von einem Servomotor 8 betätigte Absperreinrichtung 9 vorgesehen ist.The device of Figs. 1 to 3 is arranged in a basin, not shown here. It has a driven by an electric motor 1 centrifugal pump 2, which is supported by a suspension device 3. The suspension device 3 is fixed by means of a sheet 4 at the bottom of the basin; it also carries a trouser tube 5, which forwards the liquid conveyed by the centrifugal pump 2 into two distributor tubes 6. From the distribution pipes 6 go four humpback pipes 7, at the end of each one actuated by a servo motor 8 shut-off device 9 is provided.

Eine solche Absperreinrichtung 9 ist jeweils einer als Injektor ausgebildeten Strahldüse 10 vorgeschaltet. Außerdem ist eine in die Strahldüse 10 mündende Belüftungsleitung 11 vorgesehen, deren Ansaugöffnung oberhalb des höchstmöglichen Flüssigkeitsspiegels im Becken liegt.Such a shut-off device 9 is in each case connected upstream of a jet nozzle 10 designed as an injector. In addition, a venting line 11 opening into the jet nozzle 10 is provided, the suction opening of which lies above the highest possible liquid level in the basin.

In der Zeichnung nicht dargestellt sind die von einer zentralen Stelle kommenden Verbindungsleitungen, die zum Elektromotor 1 und zu den Servomotoren 8 führen. Ebenfalls nicht dargestellt ist eine zentrale Rechnereinheit, die für das Ein- und Ausschalten des Elektromotors 1 und für die Steuerung der Servomotoren 8 zuständig ist.Not shown in the drawing are coming from a central location connecting lines leading to the electric motor 1 and the servo motors 8. Also not shown is a central computer unit, which is responsible for the switching on and off of the electric motor 1 and for the control of the servo motors 8.

Der Betrieb der Rechnereinheit erfolgt mittels eines Programms, das in Abhängigkeit von vorgegebenen und aktuell gemessenen Daten den Betrieb der Vorrichtung steuert. So wird also in Abhängigkeit von dem Programm von der zentralen Rechnereinheit der Elektromotor 1 der Kreiselpumpe 2 je nach Bedarf und unter Berücksichtigung etwa notwendiger Ruhezeiten ein- und ausgeschaltet. Entsprechend dem jeweils ablaufenden Programm werden über die Servomotoren 8 einzelne Absperreinrichtungen 9 geöffnet oder geschlossen.The operation of the computer unit is carried out by means of a program which, depending on predetermined and currently measured data, the operation of Device controls. Thus, depending on the program of the central computer unit of the electric motor 1 of the centrifugal pump 2 is switched on and off as needed and taking into account any necessary rest periods. According to the respective running program 8 individual shut-off devices 9 are opened or closed via the servo motors.

So kann beispielsweise jeweils eine Absperreinrichtung 9 geöffnet sein, während die übrigen Absperreinrichtungen 9 geschlossen sind. Dieser Zustand kann für einen vorgegebenen Zeitraum erhalten bleiben, so daß der von der Kreiselpumpe 2 erzeugte Förderstrom ausschließlich über eine Strahldüse 10 in das Becken geleitet wird. Bei Ablauf der vorgegebenen Zeit kann nun diese erste Absperreinrichtung 9 geschlossen und gleichzeitig eine zweite Absperreinrichtung 9 geöffnet werden. Dies kann die Absperreinrichtung 9 einer benachbarten Strahldüse 10 oder einer entfernter gelegenen Strahldüse 10 sein. Die Strahldüsen 10 können auch mit beliebiger Reihenfolge und Dauer nacheinander in Funktion treten. Für die Reihenfolge der Strahldüsen und deren Strahldauer sind die jeweiligen Anlagenerfordemisse maßgeblich. Das in der Rechnereinheit ablaufende Programm nutzt dabei die beim Betrieb einer solchen Anlage gewonnenen Erfahrungen und Erkenntnisse zur Steuerung der verschiedenen Absperreinrichtungen 9.Thus, for example, one shut-off device 9 can be opened while the other shut-off devices 9 are closed. This state can be maintained for a predetermined period, so that the flow generated by the centrifugal pump 2 is passed exclusively via a jet nozzle 10 in the basin. At the end of the predetermined time, this first shut-off device 9 can now be closed and at the same time a second shut-off device 9 can be opened. This may be the shut-off device 9 of an adjacent jet nozzle 10 or a more distant jet nozzle 10. The jet nozzles 10 can also come into operation with any order and duration successively. For the sequence of the jet nozzles and their jet duration, the respective Anlagenerfordemisse are relevant. The running in the computer unit program uses the experience gained during the operation of such a system and knowledge to control the various shut-9.

Grundsätzlich lassen sich die einzelnen Takte zur Steuerung der Absperreinrichtungen auch mit Hilfe eines einfacheren, fest vorgegebenen, beispielsweise in einem Chip gespeicherten Programms durchführen. Selbst eine von Hand vorgenommene Steuerung kann zumindest für einen gewissen Zeitraum den von der Anlage gestellten Anforderungen entsprechen. Das in einer Rechnereinheit gespeicherte Programm besitzt aber den Vorteil, daß es über einen theoretisch unbegrenzten Zeitraum einer Vielzahl von sich stetig ändernden Anforderungen gerecht zu werden vermag und daß es sogar mit Blick auf notwendige oder empfehlenswerte Anpassungen und Ergänzungen in einzelnen Teilen umprogrammiert werden kann.In principle, the individual cycles for controlling the shut-off devices can also be carried out with the aid of a simpler, fixed preset program, for example stored in a chip. Even a manual control can meet the requirements of the system at least for a certain period of time. However, the program stored in a computer unit has the advantage that it can cope with a large number of constantly changing requirements over a theoretically unlimited period of time and that it can even be reprogrammed into individual parts with regard to necessary or recommended adjustments and additions.

Das in der Rechnereinheit gespeicherte Programm kann auch ohne weiteres den Ablauf komplizierterer Vorgänge steuern. Es kann also beispielsweise jeden einzelnen Servomotor 8 so steuern, daß durch die sich öffnende und schließende Absperreinrichtung Stoßwellen in der Strahldüse 10 und dem dahinter liegenden Beckenbereich erzeugt werden. Außerdem können die aus zwei verschiedenen Strahldüsen 10 geförderten Ströme so beeinflußt werden, daß sich eine resultierende Stoßwellen-Strömung ergibt.The program stored in the computer unit can also easily control the flow of more complicated operations. Thus, for example, it is possible to control each individual servomotor 8 in such a way that shock waves are generated in the blast nozzle 10 and the pelvic area behind it as a result of the opening and closing shut-off device. In addition, the streams delivered from two different jet nozzles 10 can be influenced so as to give a resultant shock wave flow.

Die in den Fig. 4 und 5 dargestellte Vorrichtung arbeitet im wesentlichen nach dem oben dargestellten Prinzip. Die in den Fig. 4 und 5 dargestellte Anlage unterscheidet sich aber in einigen wesentlichen Punkten von einer Anlage, wie sie beim Ausführungsbeispiel der Fig. 1 bis 3 geschildert wurde. Beachtenswert ist vor allem, daß der hier verwendete Becken 13 mit in Längsrichtung verlaufenden Kaskaden 14 versehen ist.The device shown in FIGS. 4 and 5 operates essentially according to the principle presented above. However, the system shown in Figs. 4 and 5 differs in some significant respects from a system as described in the embodiment of FIGS. 1 to 3. It is noteworthy, above all, that the basin 13 used here is provided with cascades 14 extending in the longitudinal direction.

Damit die von einer Kreiselpumpe 15 aus einem Pumpensumpf 16 geförderte Flüssigkeit auch in den zwischen den Kaskaden 14 verlaufenden Bodenbereichen 17 eine möglichst große Reinigungswirkung erzielt, ist für jeden dieser Bodenbereiche 17 eine Strahldüse 12 vorgesehen. Den Strahldüsen 12 vorgeschaltet ist jeweils eine von einem Hubmagneten 18 betätigte - in den Fig. 4 und 5 nicht erkennbare - Absperreinrichtung. Die Absperreinrichtung, die von einer Drosselklappe gebildet wird, und deren auf einem Belüftungsrohr 19 angeordneter Hubmagnet 18 entsprechen im wesentlichen der in der EP 0 257 298 B1 als Beispiel dargestellten Ausführung. Somit kann auch jede einzelne Strahldüse 12 in der Weise arbeiten, wie es in dem zitierten Dokument geschildert wird. Das bedeutet, daß jede der Strahldüsen 12 in dem ihr zugeordneten Bodenbereich 17 eine weit reichende Stoßwellen-Strömung erzeugen kann, wobei die übrigen Strahldüsen 12 währenddessen außer Funktion bleiben können.So that the liquid conveyed by a centrifugal pump 15 out of a pump sump 16 also achieves the greatest possible cleaning effect in the bottom regions 17 extending between the cascades 14, a jet nozzle 12 is provided for each of these bottom regions 17. The jet nozzles 12 are preceded in each case by a shut-off device actuated by a lifting magnet 18 (not visible in FIGS. 4 and 5). The shut-off device, which is formed by a throttle valve, and whose arranged on a vent tube 19 solenoid 18 substantially correspond to the embodiment shown in EP 0 257 298 B1 as an example. Thus, each individual jet nozzle 12 can operate in the manner described in the cited document. This means that each of the jet nozzles 12 can generate a far-reaching shock wave flow in its associated floor area 17, while the remaining jet nozzles 12 can remain inactive during this time.

Die einzelnen Bodenbereiche 17 können daher nacheinander und weitgehend unabhängig voneinander gereinigt werden. Selbstverständlich können aber auch bei dieser Ausführung mehrere Strahldüsen 12 gleichzeitig arbeiten. Aufgrund der Kaskaden 14 ist jedoch mit einer etwas anderen Wirkung zu rechnen als bei einer glatten Beckensohle.The individual floor areas 17 can therefore be cleaned successively and largely independently of each other. Of course, however, several jet nozzles 12 can work simultaneously in this embodiment. Due to the cascades 14 but is expected to have a slightly different effect than a smooth pelvic floor.

Claims (10)

  1. Method for ventilating and/or keeping clean a reservoir, which is used to receive a liquid charged with solids and, with jet tubes positioned at a point close to the floor of the reservoir and on an end wall, which tubes impart a circulating flow to the contents of the reservoir, one or a plurality of centrifugal pumps (2, 15) are provided, the delivery flow from which is led into the reservoir (13) via a plurality of jet nozzles (10, 12) provided downstream with shut-off devices (9), the individual shut-off devices (9) being opened and closed by means of a control unit at a rate adapted to the requirements of the system in each case, characterized in that the control of the shut-off devices (9) is effected in such a way that a delivery flow is led into the reservoir (13) via the jet nozzles (10, 12) in each case individually and consecutively.
  2. Method according to Claim 1, characterized in that the control of the shut-off devices (9) is effected in such a way that a delivery flow is led into the reservoir (13) in each case via a plurality of simultaneously operated jet nozzles (10, 12).
  3. Method according to Claims 1 to 2, characterized in that the shut-off devices (9) are controlled in such a way that a shock-wave flow emerges from one or more of the jet nozzles (10, 12).
  4. Method according to one or more of Claims 1 to 3, characterized in that the shut-off devices (9) are controlled in such a way that a resulting shock-wave flow is generated by the delivery flows emerging from one or more of the jet nozzles (10, 12).
  5. Method according to one of Claims 1 to 4, characterized in that the control of the centrifugal pumps (2, 15) and/or the shut-off devices (9) is effected by means of a program stored in a computer.
  6. Device for the implementation of a method according to one of Claims 1 to 5 in a reservoir (13) having a floor divided up in the longitudinal direction by partition walls or cascades (14), in conjunction with which jet tubes are provided close to the floor of the reservoir and on an end wall, one or a plurality of centrifugal pumps (2, 15), the delivery flow from which leads into the reservoir (13) via a plurality of jet nozzles (10, 12) provided downstream with shut-off devices (9), the individual shut-off devices (9) opening and closing by means of a control unit at a rate adapted to the requirements of the system in each case, characterized by a branched pipe (5, 6) with jet nozzles (10, 12), a jet nozzle (12) being provided for each of the individual floor areas (17) of the reservoir (13) running in the longitudinal direction.
  7. Device for the implementation of a method according to Claim 6, characterized in that an individual centrifugal pump (2, 15) is provided, which supplies all the jet nozzles (10, 12) with liquid via a branched pipe (5, 6).
  8. Device for the implementation of a method according to Claim 6, characterized in that a plurality of centrifugal pumps (2, 15) arranged in parallel is provided, which pumps in each case supply a number of the jet nozzles (10, 12) with liquid via pipes (5, 6).
  9. Device according to one of Claims 6 to 8, characterized in that the jet angles of the jet nozzles (10, 12) are adjustable in relation to the floor and/or the axis of the reservoir (13).
  10. Device according to one of Claims 6 to 9, characterized in that the jet nozzles (10, 12) are executed as injectors, which suck air into the delivery flow that is conducted via them via a ventilation pipe (11, 19).
EP00105802A 1999-03-25 2000-03-18 Method and device for cleaning a basin Expired - Lifetime EP1039054B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19913499 1999-03-25
DE19913499A DE19913499A1 (en) 1999-03-25 1999-03-25 Method and device for keeping a liquid container clean

Publications (3)

Publication Number Publication Date
EP1039054A2 EP1039054A2 (en) 2000-09-27
EP1039054A3 EP1039054A3 (en) 2002-09-11
EP1039054B1 true EP1039054B1 (en) 2007-05-09

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Application Number Title Priority Date Filing Date
EP00105802A Expired - Lifetime EP1039054B1 (en) 1999-03-25 2000-03-18 Method and device for cleaning a basin

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EP (1) EP1039054B1 (en)
AT (1) ATE362021T1 (en)
DE (2) DE19913499A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3051035A1 (en) * 2015-01-30 2016-08-03 Luri.watersystems.Gmbh Assembly for receiving a liquid conveyed in a sewage pipe

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3244539C2 (en) 1981-12-18 1985-01-24 Emu Unterwasserpumpen Gmbh, 8670 Hof Device for keeping rain overflow basins or rain retention basins clean
DE3584789D1 (en) * 1984-03-13 1992-01-16 Fiprosa Holding METHOD FOR RECOVERY OF RAW OIL OR REFINERY PRODUCTS FROM MUDDY THICKEN TO COMPACT, SEDIMENTED RAW OIL OR REFINE PRODUCTS, AND APPARATUS FOR CARRYING OUT THE METHOD.
DE3444710A1 (en) * 1984-12-07 1986-06-12 Kahl, Hugo, Dipl.-Ing., 4300 Essen Device for cleaning a stormwater tank
DE3617111A1 (en) * 1986-05-21 1987-11-26 Emu Unterwasserpumpen Gmbh Process for keeping clean rectangular stormwater overflow tanks and apparatus for carrying out the process
DE3626182A1 (en) 1986-08-01 1988-02-04 Klein Schanzlin & Becker Ag METHOD AND DEVICE FOR CLEANING LIQUID TANKS
DE3700055A1 (en) 1987-01-02 1988-07-14 Vollmar Oskar Gmbh Process and apparatus for the jet cleaning of a stormwater tank
DE3923820A1 (en) 1989-07-19 1991-01-24 Kaus Hans Juergen Rain-water tank stirring system - uses circulating pumps which direct jets of water over floor
DE8909000U1 (en) 1989-07-25 1989-09-28 Ksb Aktiengesellschaft, 6710 Frankenthal, De

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
DE19913499A1 (en) 2000-09-28
EP1039054A3 (en) 2002-09-11
EP1039054A2 (en) 2000-09-27
DE50014311D1 (en) 2007-06-21
ATE362021T1 (en) 2007-06-15

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