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EP0709525A1 - Screen for a rainwater overflow - Google Patents

Screen for a rainwater overflow Download PDF

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Publication number
EP0709525A1
EP0709525A1 EP95116396A EP95116396A EP0709525A1 EP 0709525 A1 EP0709525 A1 EP 0709525A1 EP 95116396 A EP95116396 A EP 95116396A EP 95116396 A EP95116396 A EP 95116396A EP 0709525 A1 EP0709525 A1 EP 0709525A1
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EP
European Patent Office
Prior art keywords
rake
screen
cleaning
bars
rod
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.)
Withdrawn
Application number
EP95116396A
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German (de)
French (fr)
Inventor
Horst Bormet
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Individual
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Individual
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Publication date
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Publication of EP0709525A1 publication Critical patent/EP0709525A1/en
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    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/12Emergency outlets
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B8/00Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
    • E02B8/02Sediment base gates; Sand sluices; Structures for retaining arresting waterborne material
    • E02B8/023Arresting devices for waterborne materials
    • E02B8/026Cleaning devices
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/12Emergency outlets
    • E03F5/125Emergency outlets providing screening of overflowing water

Definitions

  • the invention relates to a screen screen for a rainwater overflow with an overflow wall arranged between an inlet channel and a relief channel, on the upper edge of which a screen consisting of parallel screen bars is arranged, into which a movable cleaning screen engages.
  • Rainwater overflows are usually provided in relief structures in the mixed sewage system.
  • these relief structures the large amount of water that occurs during heavy rainfall, which cannot be taken up by the downstream sewage treatment plant, flows from the inlet channel via an overflow wall into an adjacent relief channel.
  • the sewage system and the downstream sewage treatment plant are relieved of large amounts of rainwater.
  • the discharge channel usually opens into the receiving water of the sewage treatment plant.
  • screen ridges are connected to the upper edges of the overflow walls, through which the water flows as it passes through the overflow wall. Coarser impurities are retained in the screen, which must therefore be cleaned regularly.
  • screen screens are used to a larger extent for this purpose, the screen grids of which have horizontal screen bars running parallel to the upper edge of the overflow wall.
  • a cleaning rake runs along the side facing the inlet channel. The stripped impurities fall back into the inlet channel and are conveyed there. It is known to let the screen break through from below, from above or horizontally.
  • the cleaning rakes used for the cleaning of the known screen screens are particularly susceptible to faults because of the required longitudinal guides and drive devices.
  • the longitudinal movement of the cleaning rakes along the screen of the screen rake can cause a larger amount of screenings to accumulate before the cleaning rake, which drop unevenly and can thereby disrupt removal.
  • it cannot be ruled out that solid bodies caught between the rake bars of the rake screen are clamped even more strongly by the cleaning rake and thereby blocking the movement of the cleaning rake.
  • the consequences are overloading of the drive and clogging of the screen rake due to failure of cleaning.
  • the object of the invention is therefore to design a screen rake of the type mentioned at the outset in such a way that effective cleaning of the computing grid is ensured and that it is largely insensitive to interference.
  • the rake grate is arranged with rake bars running transversely to the upper edge of the overflow wall and that the cleaning rake with bar-shaped rake tines reaches like a comb into the spaces between the rake grids and can be pivoted about a pivot axis lying parallel to the upper edge by means of a cleaning drive.
  • the cleaning rake which engages in the rake grate causes a complete and effective cleaning of all gaps between the rake grate with each swivel stroke, so that all solid objects which could become lodged in the rake grate are also removed inevitably.
  • the rake bars of the rake screen are not arranged parallel to the upper edge of the overflow wall, but rather transversely thereto, preferably approximately vertically, the discharge of the contaminants detached from the cleaning rake is favored. The contaminants fall back into the inlet channel and are carried away by the dirty water flowing there.
  • the swivel axis is arranged on the side facing the inlet channel at a distance in front of the computing grid. This favors and simplifies the discharge of the contaminants into the inlet channel.
  • the sieve screen shown in the drawing is arranged on the upper edge 1 of an overflow wall 2, which separates an inlet channel 3 from a (only partially shown) relief channel 4.
  • the wastewater flows in feed channel 3 to a sewage treatment plant.
  • the relief channel 4 remains dry. If there is an increase in water as a result of rain, the water level in inlet channel 3 increases. To relieve the downstream wastewater treatment plant, part of the increased amount of water flows over the upper edge 1 of the overflow wall 2 into the relief channel 4 and is directed from there directly into the receiving water of the wastewater treatment plant.
  • the screen rake arranged at the overflow between the inlet channel 3 and the relief channel 4 in a relief structure has a computing grating 5 which is arranged on the upper edge 1 with a slight inclination towards the relief channel 4.
  • the screen 5 consists of numerous parallel, approximately vertically arranged screen bars 6, which are connected at their upper and lower ends by a longitudinal bar 7 and 8 to form the screen 5. As can be seen from Fig. 1, the longitudinal bars 7 and 8 are connected to the overflow wall 2 by brackets 9 and 10, respectively. The water flowing from the inlet channel 3 into the relief channel 4 must pass through the screen 5. Coarse, in particular floating contaminants are retained by the computing grid 5.
  • a cleaning rake 11 has a multiplicity of rod-shaped rake tines 12 which are dimensioned such that they each reach into a space 13 between the rake bars 6 of the rake grid 5.
  • the rake tines 12 of the cleaning rake 12 are fastened to a common pivot shaft 14, which is supported at its two ends with a bearing pin 15 in a pivot bearing 16.
  • the two pivot bearings 16 (of which only one pivot bearing 16 is shown in FIG. 2) determine a pivot axis 17 for the pivoting movement of the cleaning rake 11.
  • the swivel axis 17 lies on the side facing the inlet channel 3 at a distance from the screen grating 5.
  • the cleaning rake 11 sweeps the screen bars of the screen grate 5 over their entire length and throws them doing the Contaminants that have accumulated on one side of the screen 5 back into the inlet channel 3.
  • the pivot shaft 14 is connected to a drive arm 18 which extends in the opposite direction to the rake tines 12 and at the free end of which a drive rod 19 acts in an articulated manner.
  • the drive rod 19 is designed in the embodiment shown here as a connecting rod of a crank mechanism 20 which is driven by a motor 21.
  • the drive rod 19 could, for example, also be a piston rod of a pressure cylinder-actuated (not shown) drive cylinder.
  • the lower stroke end of the pivoting movement of the cleaning rake 11 is determined such that the rake tines 12 of the cleaning rake 11 in their lower stroke end position (indicated by dashed lines in FIG. 1) with their front edge largely emerge from the grating of the cleaning rake 5 such that the ends of the Rake tines 11 always remain in the respective assigned space 13.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Sewage (AREA)
  • Filtration Of Liquid (AREA)

Abstract

The grille (5) comprises parallel bars (6) mounted on the top edge (1) of an overflow weir (2) between inlet and discharge channels (3, 4). The tines (11) of the cleaning rake (12) pass between the grille bars, and it is swung by a drive mechanism (18-21) on an axis (17) parallel to the weir edge. The grille bars can be nearly vertical, and the axis can be clear of the grille on the inlet channel side. The rake tines can be on a shaft (14) driven by an arm (18) in turn coupled to a driving crank via a connecting rod. Alternatively, a pressure-operated ram can be used.

Description

Die Erfindung betrifft einen Siebrechen für einen Regenwasser-Überlauf mit einer zwischen einem Zulaufkanal und einem Entlastungskanal angeordneten Überlaufwand, auf deren Oberkante ein aus parallelen Rechenstäben bestehendes Rechengitter angeordnet ist, in das ein bewegbarer Reinigungsrechen eingreift.The invention relates to a screen screen for a rainwater overflow with an overflow wall arranged between an inlet channel and a relief channel, on the upper edge of which a screen consisting of parallel screen bars is arranged, into which a movable cleaning screen engages.

Regenwasser-überläufe werden üblicherweise in Entlastungsbauwerken der Mischkanalisation vorgesehen. In diesen Entlastungsbauwerken strömt die bei starken Regenfällen anfallende große Wassermenge, die von dem nachgeschalteten Klärwerk nicht aufgenommen werden kann, aus dem Zulaufkanal über eine Überlaufwand in einen daneben angeordneten Entlastungskanal. In solchen Entlastungsbauwerken werden somit die Kanalisation und das nachgeordnete Klärwerk von großen Regenwassermengen entlastet. Üblicherweise mündet der Entlastungskanal in den Vorfluter der Kläranlage.Rainwater overflows are usually provided in relief structures in the mixed sewage system. In these relief structures, the large amount of water that occurs during heavy rainfall, which cannot be taken up by the downstream sewage treatment plant, flows from the inlet channel via an overflow wall into an adjacent relief channel. In such relief structures, the sewage system and the downstream sewage treatment plant are relieved of large amounts of rainwater. The discharge channel usually opens into the receiving water of the sewage treatment plant.

Bei diesem Entlastungsvorgang strömt aber nicht nur verhältnismäßig sauberes Regenwasser in den Entlastungskanal, sondern auch schwimmfähige Verunreinigungen, insbesondere gröbere Verunreinigungen wie beispielsweise Toilettenpapier, Windeln oder Grobstoffe. Diese Verunreinigungen lagern sich an den Ufern des Vorfluters oberhalb des normalen Wasserspiegels ab und führen zu einer störenden Verunreinigung der Landschaft.In this relief process, not only does relatively clean rainwater flow into the relief channel, but also floating contaminants, in particular coarser contaminants such as toilet paper, diapers or coarse materials. These contaminants are deposited on the banks of the receiving water above the normal water level and lead to disturbing pollution of the landscape.

Um gerade auch die schwimmfähigen Verunreinigungen von dem Entlastungskanal fernzuhalten, ist es bekannt, Tauchwände in den Entlastungsbauwerken vorzusehen, sodaß die an der Oberfläche schwimmenden gröberen Verunreinigungen zurückgehalten werden. Die Wirksamkeit derartiger Tauchwände ist aber gerade bei hohem Wasseranfall infolge der dann auftretenden hohen Strömungsgeschwindigkeiten unzureichend.In order to keep the floating contaminants away from the relief channel, it is known to provide diving walls in the relief structures so that the coarser contaminants floating on the surface are retained. However, the effectiveness of such baffles is inadequate, especially when there is a large amount of water due to the high flow velocities that then occur.

Deshalb werden an die Oberkanten der Überlaufwände Siebrechen angeschlossen, durch die das Wasser beim Passieren der Überlaufwand strömt. Gröbere Verunreinigungen werden im Siebrechen zurückgehalten, der deshalb regelmäßig gereinigt werden muß.Therefore, screen ridges are connected to the upper edges of the overflow walls, through which the water flows as it passes through the overflow wall. Coarser impurities are retained in the screen, which must therefore be cleaned regularly.

In der Praxis werden im größeren Umfang hierfür Siebrechen eingesetzt, deren Rechengitter parallel zur Oberkante der Überlaufwand verlaufende, horizontale Rechenstäbe aufweisen. Zur Reinigung dieses Siebrechens fährt auf der den Zulaufkanal zugewandten Seite ein Reinigungsrechen entlang. Die abgestreiften Verunreinigungen fallen in den Zulaufkanal zurück und werden dort weitergefördert. Es ist bekannt, die Siebrechen von unten, von oben oder waagrecht durchströmen zu lassen.In practice, screen screens are used to a larger extent for this purpose, the screen grids of which have horizontal screen bars running parallel to the upper edge of the overflow wall. To clean this screen, a cleaning rake runs along the side facing the inlet channel. The stripped impurities fall back into the inlet channel and are conveyed there. It is known to let the screen break through from below, from above or horizontally.

Die für die Reinigung der bekannten Siebrechen eingesetzten Reinigungsrechen sind vor allem wegen der erforderlichen Längsführungen und Antriebseinrichtungen störanfällig. Die Längsbewegung der Reinigungsrechen entlang dem Rechengitter des Siebrechens kann dazu führen, daß sich vor dem Reinigungsrechen eine größere Menge von Rechengut ansammelt, die ungleichmäßig abfallen und dadurch den Abtransport stören kann. Außerdem ist nicht auzuschließen, daß zwischen den Rechenstäben des Rechengitters aufgefangene Festkörper durch den Reinigungsrechen noch stärker festgeklemmt werden und dadurch die Bewegung des Reinigungsrechens blockieren. Die Folgen sind Überlastungen des Antriebs und Verstopfung des Siebrechens durch Ausfall der Reinigung.The cleaning rakes used for the cleaning of the known screen screens are particularly susceptible to faults because of the required longitudinal guides and drive devices. The longitudinal movement of the cleaning rakes along the screen of the screen rake can cause a larger amount of screenings to accumulate before the cleaning rake, which drop unevenly and can thereby disrupt removal. In addition, it cannot be ruled out that solid bodies caught between the rake bars of the rake screen are clamped even more strongly by the cleaning rake and thereby blocking the movement of the cleaning rake. The consequences are overloading of the drive and clogging of the screen rake due to failure of cleaning.

Aufgabe der Erfindung ist es daher, einen Siebrechen der eingangs genannten Gattung so auszubilden, daß eine wirksame Reinigung des Rechengitters sichergestellt ist und daß er gegen Störungen weitgehend unempfindlich ist.The object of the invention is therefore to design a screen rake of the type mentioned at the outset in such a way that effective cleaning of the computing grid is ensured and that it is largely insensitive to interference.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß das Rechengitter mit quer zur Oberkante der Überlaufwand verlaufenden Rechenstäben angeordnet ist und daß der Reinigungsrechen mit stabförmigen Rechenzinken kammartig in die Zwischenräume des Rechengitters greift und um eine parallel zur Oberkante liegende Schwenkachse mittels eines Reinigungsantriebs schwenkbar ist.This object is achieved in that the rake grate is arranged with rake bars running transversely to the upper edge of the overflow wall and that the cleaning rake with bar-shaped rake tines reaches like a comb into the spaces between the rake grids and can be pivoted about a pivot axis lying parallel to the upper edge by means of a cleaning drive.

Der kammartig in das Rechengitter eingreifende Reinigungsrechen bewirkt bei jedem Schwenkhub eine vollständige und wirksame Reinigung aller Zwischenräume des Rechengitters, so daß auch alle Festkörper, die sich im Rechengitter festsetzen könnten, zwangsläufig entfernt werden.The cleaning rake which engages in the rake grate causes a complete and effective cleaning of all gaps between the rake grate with each swivel stroke, so that all solid objects which could become lodged in the rake grate are also removed inevitably.

Da die Rechenstäbe des Rechengitters nicht parallel zur Oberkante der Überlaufwand, sondern quer dazu, und zwar vorzugsweise angenähert senkrecht angeordnet sind, wird der Abwurf der vom Reinigungsrechen gelösten Verunreinigungen begünstigt. Die Verunreinigungen fallen in den Zulaufkanal zurück und werden durch das dort fließende Schmutzwasser weggefördert.Since the rake bars of the rake screen are not arranged parallel to the upper edge of the overflow wall, but rather transversely thereto, preferably approximately vertically, the discharge of the contaminants detached from the cleaning rake is favored. The contaminants fall back into the inlet channel and are carried away by the dirty water flowing there.

Im Gegensatz zu einer Längsbewegung eines Reinigungsrechens über eine größere Länge entlang dem Siebrechen ist die genaue Führung und Lagerung des schwenkbaren Reinigungsrechens in konstruktive Weise sehr einfach und sicher möglich. Die gesamte Führung und Lagerung für die Bewegung des Reinigungsrechens beschränkt sich auf die Schwenklagerung.In contrast to a longitudinal movement of a cleaning rake over a greater length along the sieve rake, the precise guidance and storage of the pivotable cleaning rake is very simple and safe in a constructive manner. The entire leadership and Storage for the movement of the cleaning rake is limited to the swivel mounting.

Gemäß einer bevorzugten Ausführungsform der Erfindung ist vorgesehen, daß die Schwenkachse auf der dem Zulaufkanal zugewandten Seite im Abstand vor dem Rechengitter angeordnet ist. Dadurch wird der Abwurf der Verunreinigungen in den Zulaufkanal begünstigt und vereinfacht.According to a preferred embodiment of the invention, it is provided that the swivel axis is arranged on the side facing the inlet channel at a distance in front of the computing grid. This favors and simplifies the discharge of the contaminants into the inlet channel.

Weitere vorteilhafte Ausgestaltungen des Erfindungsgedankens sind Gegenstand weiterer Unteransprüche.Further advantageous embodiments of the inventive concept are the subject of further dependent claims.

Nachfolgend wird ein Ausführungsbeispiel der Erfindung näher erläutert, das in der Zeichnung dargestellt ist.
Es zeigt:

  • Fig. 1 einen Siebrechen für einen Regenwasser-Überlauf in einem senkrechten Schnitt und
  • Fig. 2 eine Teilansicht in Richtung des Pfeiles II in Fig. 1.
An exemplary embodiment of the invention is illustrated below, which is shown in the drawing.
It shows:
  • Fig. 1 shows a screen for a rainwater overflow in a vertical section and
  • FIG. 2 is a partial view in the direction of arrow II in FIG. 1.

Der in der Zeichnung dargestellte Siebrechen ist an der Oberkante 1 einer Überlaufwand 2 angeordnet, die einen Zulaufkanal 3 von einem (nur teilweise dargestellten) Entlastungskanal 4 trennt.The sieve screen shown in the drawing is arranged on the upper edge 1 of an overflow wall 2, which separates an inlet channel 3 from a (only partially shown) relief channel 4.

Bei normalem Schmutzwasseranfall strömt das Schmutzwasser im Zulaufkanal 3 zu einer Kläranlage. Der Entlastungskanal 4 bleibt trocken. Bei erhöhtem Wasseranfall infolge von Regen steigt der Wasserstand im Zulaufkanal 3 an. Zur Entlastung der nachgeschalteten Kläranlage strömt ein Teil der erhöhten Wassermenge über die Oberkante 1 der Überlaufwand 2 in den Entlastungskanal 4 und wird von dort unmittelbar in den Vorfluter der Kläranlage geleitet.In the case of normal wastewater accumulation, the wastewater flows in feed channel 3 to a sewage treatment plant. The relief channel 4 remains dry. If there is an increase in water as a result of rain, the water level in inlet channel 3 increases. To relieve the downstream wastewater treatment plant, part of the increased amount of water flows over the upper edge 1 of the overflow wall 2 into the relief channel 4 and is directed from there directly into the receiving water of the wastewater treatment plant.

Der am Überlauf zwischen dem Zulaufkanal 3 und dem Entlastungskanal 4 in einem Entlastungsbauwerk angeordnete Siebrechen weist ein Rechengitter 5 auf, das mit leichter Neigung zum Entlastungskanal 4 hin an der Oberkante 1 angeordnet ist.The screen rake arranged at the overflow between the inlet channel 3 and the relief channel 4 in a relief structure has a computing grating 5 which is arranged on the upper edge 1 with a slight inclination towards the relief channel 4.

Das Rechengitter 5 besteht aus zahlreichen parallelen angenähert senkrecht angeordneten Rechenstäben 6, die an ihren oberen und unteren Enden jeweils durch einen Längsstab 7 bzw. 8 miteinander zur Bildung des Rechengitters 5 verbunden sind. Wie man aus Fig. 1 erkennt, sind die Längsstäbe 7 und 8 durch Halterungen 9 bzw. 10 mit der Überlaufwand 2 verbunden. Das aus dem Zulaufkanal 3 in den Entlastungskanal 4 strömende Wasser muß das Rechengitter 5 passieren. Grobere, insbesondere schwimmfähige Verunreinigungen werden vom Rechengitter 5 zurückgehalten.The screen 5 consists of numerous parallel, approximately vertically arranged screen bars 6, which are connected at their upper and lower ends by a longitudinal bar 7 and 8 to form the screen 5. As can be seen from Fig. 1, the longitudinal bars 7 and 8 are connected to the overflow wall 2 by brackets 9 and 10, respectively. The water flowing from the inlet channel 3 into the relief channel 4 must pass through the screen 5. Coarse, in particular floating contaminants are retained by the computing grid 5.

Ein Reinigungsrechen 11 weist eine Vielzahl von stabförmigen Rechenzinken 12 auf, die so bemessen sind, daß sie jeweils in einen Zwischenraum 13 zwischen den Rechenstäben 6 des Rechengitters 5 greifen. Die Rechenzinken 12 des Reinigungsrechens 12 sind an einer gemeinsamen Schwenkwelle 14 befestigt, die an ihren beiden Enden jeweils mit einem Lagerzapfen 15 in einem Schwenklager 16 gelagert ist. Die beiden Schwenklager 16 (von denen in Fig. 2 nur ein Schwenklager 16 dargestellt ist), bestimmen eine Schwenkachse 17 für die Schwenkbewegung des Reinigungsrechens 11.A cleaning rake 11 has a multiplicity of rod-shaped rake tines 12 which are dimensioned such that they each reach into a space 13 between the rake bars 6 of the rake grid 5. The rake tines 12 of the cleaning rake 12 are fastened to a common pivot shaft 14, which is supported at its two ends with a bearing pin 15 in a pivot bearing 16. The two pivot bearings 16 (of which only one pivot bearing 16 is shown in FIG. 2) determine a pivot axis 17 for the pivoting movement of the cleaning rake 11.

Wie man aus Fig. 1 erkennt, liegt die Schwenkachse 17 auf der dem Zulaufkanal 3 zugewandten Seite im Abstand vor dem Rechengitter 5. Bei seiner Schwenkbewegung um einen vorgegebenen Schwenkwinkel bestreicht der Reinigungsrechen 11 die Rechenstäbe des Rechengitters 5 im wesentlichen über deren gesamte Länge und wirft dabei die Verunreinigungen, die sich auf der einen Seite des Rechengitters 5 angesammelt haben, in den Zulaufkanal 3 zurück.As can be seen from FIG. 1, the swivel axis 17 lies on the side facing the inlet channel 3 at a distance from the screen grating 5. When it swivels by a predetermined swivel angle, the cleaning rake 11 sweeps the screen bars of the screen grate 5 over their entire length and throws them doing the Contaminants that have accumulated on one side of the screen 5 back into the inlet channel 3.

Die Schwenkwelle 14 ist mit einem sich entgegengesetzt zu den Rechenzinken 12 erstreckenden Antriebsarm 18 verbunden, an dessen freiem Ende eine Antriebsstange 19 gelenkig angreift. Die Antriebsstange 19 ist bei dem hier dargestellten Ausführungsbeispiel als Pleuelstange eines Kurbeltriebs 20 ausgeführt, der von einem Motor 21 angetrieben wird. Stattdessen könnte die Antriebsstange 19 beispielsweise auch eine Kolbenstange eines druckmittelbetätigten (nicht dargestellten) Antriebszylinders sein.The pivot shaft 14 is connected to a drive arm 18 which extends in the opposite direction to the rake tines 12 and at the free end of which a drive rod 19 acts in an articulated manner. The drive rod 19 is designed in the embodiment shown here as a connecting rod of a crank mechanism 20 which is driven by a motor 21. Instead, the drive rod 19 could, for example, also be a piston rod of a pressure cylinder-actuated (not shown) drive cylinder.

Das untere Hubende der Schwenkbewegung des Reinigungsrechens 11 ist so festgelegt, daß die Rechenzinken 12 des Reinigungsrechens 11 in ihrer (in Fig. 1 mit gestrichelten Linien angedeuteten) unteren Hubendstellung mit ihrer Vorderkante zwar weitgehend aus dem Gitter des Reinigungsrechens 5 austreten, daß die Enden der Rechenzinken 11 dabei aber ständig in dem jeweils zugeordneten Zwischenraum 13 verbleiben.The lower stroke end of the pivoting movement of the cleaning rake 11 is determined such that the rake tines 12 of the cleaning rake 11 in their lower stroke end position (indicated by dashed lines in FIG. 1) with their front edge largely emerge from the grating of the cleaning rake 5 such that the ends of the Rake tines 11 always remain in the respective assigned space 13.

Claims (7)

Siebrechen für einen Regenwasser-Überlauf mit einer zwischen einem Zulaufkanal (3) und einem Entlastungskanal (4) angeordneten Überlaufwand (2), auf deren Oberkante (1) ein aus parallelen Rechenstäben (6) bestehendes Rechengitter (5) angeordnet ist, in das ein bewegbarer Reinigungsrechen (11) eingreift, dadurch gekennzeichnet, daß das Rechengitter (5) mit quer zur Oberkante (1) der Überlaufwand (2) verlaufenden Rechenstäben (6) angeordnet ist und daß der Reinigungsrechen (11) mit stabförmigen Rechenzinken (12) kammartig in die Zwischenräume (13) des Rechengitters (5) greift und um eine parallel zur Oberkante (1) liegende Schwenkachse (17) mittels eines Reinigungsantriebs (18, 19, 20, 21) schwenkbar ist.They break for a rainwater overflow with an overflow wall (2) arranged between an inlet channel (3) and a relief channel (4), on the upper edge (1) of which a screen (5) consisting of parallel screen bars (6) is arranged, into which a screen Movable cleaning rake (11) engages, characterized in that the rake grille (5) is arranged with rake bars (6) running transversely to the upper edge (1) of the overflow wall (2) and that the cleaning rake (11) with rod-shaped rake tines (12) is comb-like the spaces (13) of the screen grille (5) engage and can be pivoted about a pivot axis (17) parallel to the upper edge (1) by means of a cleaning drive (18, 19, 20, 21). Siebrechen nach Anspruch 1, dadurch gekennzeichnet, daß die Rechenstäbe (6) des Rechengitters (5) angenähert senkrecht angeordnet sind.Sieve screen according to claim 1, characterized in that the rake bars (6) of the rake screen (5) are arranged approximately vertically. Siebrechen nach Anspruch 1, dadurch gekennzeichnet, daß die Schwenkachse (17) auf der dem Zulaufkanal (3) zugewandten Seite im Abstand vor dem Rechengitter (5) angeordnet ist.Sieve screen according to claim 1, characterized in that the swivel axis (17) is arranged on the side facing the inlet channel (3) at a distance in front of the screen (5). Siebrechen nach Anspruch 1, dadurch gekennzeichnet, daß der Reinigungsrechen (11) eine in der Schwenkachse (17) gelagerte Schwenkwelle (14) aufweist, an der die stabförmigen Rechenzinken (12) befestigt sind.Sieve screen according to claim 1, characterized in that the cleaning rake (11) has a pivot shaft (14) which is mounted in the pivot axis (17) and to which the rod-shaped rake tines (12) are attached. Siebrechen nach Anspruch 4, dadurch gekennzeichnet, daß die Schwenkwelle (14) mit einem Antriebsarm (18) verbunden ist, an dem eine Antriebsstange (19) angreift.Screen breaking according to claim 4, characterized in that the pivot shaft (14) is connected to a drive arm (18) on which a drive rod (19) engages. Siebrechen nach Anspruch 5, dadurch gekennzeichnet, daß die Antriebsstange (19) eine Pleuelstange eines Kurbeltriebs (20) ist.Sieve screen according to claim 5, characterized in that the drive rod (19) is a connecting rod of a crank mechanism (20). Siebrechen nach Anspruch 5, dadurch gekennzeichnet, daß die Antriebsstange (19) eine Kolbenstange eines druckmittelbetätigten Antriebszylinders ist.Sieve screen according to claim 5, characterized in that the drive rod (19) is a piston rod of a pressure-actuated drive cylinder.
EP95116396A 1994-10-29 1995-10-18 Screen for a rainwater overflow Withdrawn EP0709525A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4438716 1994-10-29
DE19944438716 DE4438716A1 (en) 1994-10-29 1994-10-29 They break for a rainwater overflow

Publications (1)

Publication Number Publication Date
EP0709525A1 true EP0709525A1 (en) 1996-05-01

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EP95116396A Withdrawn EP0709525A1 (en) 1994-10-29 1995-10-18 Screen for a rainwater overflow

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DE (1) DE4438716A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2354186A (en) * 1999-09-14 2001-03-21 Longwood Engineering Co Ltd Screen for edge of overflow weir

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007036470A1 (en) 2007-08-01 2009-02-05 Giehl, Klaus-Ulrich, Dipl.-Ing. (FH) Screen rake at an overflow threshold of a rain relief system
CN112030887B (en) * 2020-08-21 2021-12-10 四川中际建设工程有限公司 Overflowing slag collection weir for hydraulic and hydroelectric engineering and construction method thereof
CN112142135B (en) * 2020-09-30 2022-08-09 深圳市建工建设集团有限公司 Engineering sewage pipe network filtration system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE107874C (en) *
US2092623A (en) * 1935-12-19 1937-09-07 Liquid level control
GB832728A (en) * 1957-10-08 1960-04-13 Ames Crosta Mills & Company Lt Improvements in or relating to the straining of liquids
DE2205207A1 (en) * 1972-02-04 1973-08-16 Albert Baehr Rotary bar screen - for effluent treatment plant
GB1598103A (en) * 1978-03-09 1981-09-16 Longwood Eng Co Ltd Apparatus for clearing screens such as storm water overflow screens

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE107874C (en) *
US2092623A (en) * 1935-12-19 1937-09-07 Liquid level control
GB832728A (en) * 1957-10-08 1960-04-13 Ames Crosta Mills & Company Lt Improvements in or relating to the straining of liquids
DE2205207A1 (en) * 1972-02-04 1973-08-16 Albert Baehr Rotary bar screen - for effluent treatment plant
GB1598103A (en) * 1978-03-09 1981-09-16 Longwood Eng Co Ltd Apparatus for clearing screens such as storm water overflow screens

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2354186A (en) * 1999-09-14 2001-03-21 Longwood Engineering Co Ltd Screen for edge of overflow weir
GB2354186B (en) * 1999-09-14 2003-07-02 Longwood Engineering Co Ltd Weir screen

Also Published As

Publication number Publication date
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