EP0484724B1 - Device for collecting and delivering solid particles from flowing water - Google Patents

Device for collecting and delivering solid particles from flowing water Download PDF

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Publication number
EP0484724B1
EP0484724B1 EP91117953A EP91117953A EP0484724B1 EP 0484724 B1 EP0484724 B1 EP 0484724B1 EP 91117953 A EP91117953 A EP 91117953A EP 91117953 A EP91117953 A EP 91117953A EP 0484724 B1 EP0484724 B1 EP 0484724B1
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EP
European Patent Office
Prior art keywords
fixed
moveable
grade
movable
rods
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
EP91117953A
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German (de)
French (fr)
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EP0484724A3 (en
EP0484724A2 (en
Inventor
Martin Meurer
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GERD MEURER GmbH
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GERD MEURER GmbH
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Publication date
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Publication of EP0484724A2 publication Critical patent/EP0484724A2/en
Publication of EP0484724A3 publication Critical patent/EP0484724A3/en
Application granted granted Critical
Publication of EP0484724B1 publication Critical patent/EP0484724B1/en
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Expired - Lifetime legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
    • E02B8/02—Sediment base gates; Sand sluices; Structures for retaining arresting waterborne material
    • E02B8/023—Arresting devices for waterborne materials

Definitions

  • the invention relates to a device according to the preamble of claim 1.
  • EP-A-0 346 311 Such a generic device is shown in EP-A-0 346 311.
  • the movable cover is fastened to the movable rake bars, as a result of which the cover can jam on the channel base, in particular when the movable rake bars move downward, or can be blocked by solids located on the channel base .
  • the function of the double grating rake in the lower area in corners and between sand and / or solids building up between fixed and movable rake bars can even be blocked and even blocked.
  • the rake bars in the lower area are exposed to very high wear, which means that the requirement for a constant gap width can no longer be met.
  • the main advantage of the inventive design of the generic device can be seen in particular in that a malfunction or a blocking of the double grating can be avoided in a simple manner and self-cleaning is also made possible by the mobility and flying mounting of the flap.
  • the drawing shows a section of a double screen 1, namely the lower part essentially in a side view.
  • the double screen rake 1 with its fixed rake bars 2 and movable rake bars 3 is arranged in an indicated frame 4, which stands on the channel base 5 of a channel, not shown.
  • the fixed rake bars 2 are by means of a cross bar 6, which is above the channel base 5 is arranged on the underwater side, that is, behind the rake bars 2, 3, so that the fixed rake bars 2 are cantilevers in the lower region, fastened in the frame 4.
  • This opening 8 between the channel base 5 and the fixed rake bars 2 is sealed by means of a movable flap 9, so that the water with the solids therein does not flow unhindered and no sand and / or solids which block the double grating screen 1 can build up here.
  • the movable flap 9 is overhung in such a way that it rests with its upper edge 10 on the bottom step of the fixed rake bars 2 and rests with its lower edge 11 on the channel base 5 and by means of one or more on the one hand on the rear wall of the flap 9 and on the other hand on the channel bottom 5 attached traction elements 12 is held with load.
  • the lower edge 11 of the movable flap 9 can also be brought in the direction of position 15 by means of an opening lever 14. This cleans the critical area before double grating 1 and prevents sand sedimentation.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Sewage (AREA)
  • Filtration Of Liquid (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Water Treatment By Sorption (AREA)

Abstract

In order to provide a device for collecting and delivering solid particles which are carried along by flowing water in drains or the like, in the form of a double-grid screen (1) arranged in a frame (4) and having fixed and movable screen bars (2, 3) whose surfaces facing the direction of flow are stepped, the movable screen bars (3) being connected to one another in order to form at least one unit which can be actuated by means of a drive mechanism which gives the movable screen bars (3) a closed motion path essentially in the plane of the screen bars (3), its upward motion component being slightly greater than the step height of the fixed screen bars (2), and the lower end areas, facing the drain bottom (5), of the fixed screen bars (2) having a continuous cover arranged transversely to the flow direction in front of these screen bars (2), which device not only guarantees that solid particles cannot pass the double-grid screen (1) unimpeded in the bottom area and that obstruction or blockage of the double-grid screen (1) by sand and/or solid particles building up in the bottom area can be avoided, but that cleaning in this area is unnecessary or is made possible in a simple manner, the continuous cover is designed as a movable flap. <IMAGE>

Description

Die Erfindung betrifft eine Vorrichtung nach dem Oberbegriff des Anspruchs 1.The invention relates to a device according to the preamble of claim 1.

Eine solche gattungsbildende Vorrichtung zeigt die EP-A-0 346 311. Dabei ist die bewegliche Abdeckung an den beweglichen Rechenstäben befestigt, wodurch die Abdeckung insbesondere bei der Abwärtsbewegung der beweglichen Rechenstäbe auf der Kanalsohle verkanten oder durch sich auf der Kanalsohle befindliche Feststoffe blockiert werden kann.Such a generic device is shown in EP-A-0 346 311. The movable cover is fastened to the movable rake bars, as a result of which the cover can jam on the channel base, in particular when the movable rake bars move downward, or can be blocked by solids located on the channel base .

Weiterhin ist aus der EP-B-0221 991 eine ähnliche Vorrichtung bekannt. Dabei ist u.a. vorgesehen, daß die der Kanalsohle zugewandten unteren Endbereiche der feststehenden Rechenstäbe eine Materialstärke aufweisen, die im wesentlichen dem Abstand zwischen den beweglichen Rechenstäben entspricht, so daß die Schlitze zwischen den feststehenden Rechenstäben im wesentlichen verschlossen sind, wenn die beweglichen Rechenstäbe sich in ihren untersten Positionen befinden. Dies bedeutet aber, daß Feststoffe, deren Ausmaße kleiner als die Schlitzbreite sind, ungehindert durch die Schlitze zwischen den feststehenden Rechenstäben gelangen können, sobald die beweglichen Rechenstäbe sich aufwärts bewegen und die Schlitze nach und nach freigeben, und somit nicht vom Doppelrostrechen aus dem strömenden Wasser entfernt werden können, was speziell in Kläranlagen mit der Forderung nach feiner Siebung nachteilig ist.Furthermore, a similar device is known from EP-B-0221 991. It is provided, inter alia, that the lower end regions of the fixed rake rods facing the channel bottom have a material thickness which corresponds essentially to the distance between the movable rake rods, so that the slots between the fixed rake rods are essentially closed when the movable rake rods are in their lowest positions. However, this means that solids, the dimensions of which are smaller than the slot width, can pass freely through the slots between the fixed rake bars as soon as the movable rake bars move upwards and gradually release the slots, and thus not from the double screen rake from the flowing water can be removed, which is particularly disadvantageous in sewage treatment plants with the requirement for fine screening.

Außerdem kann der Doppelrostrechen durch sich im unteren Bereich in Ecken und zwischen feststehenden und beweglichen Rechenstäben aufbauenden Sand und/oder Feststoffe in seiner Funktion gestört und auch sogar blockiert werden.In addition, the function of the double grating rake in the lower area in corners and between sand and / or solids building up between fixed and movable rake bars can even be blocked and even blocked.

Darüber hinaus sind die Rechenstäbe im unteren Bereich sehr hohem Verschleiß ausgesetzt, wodurch die Forderung nach gleichbleibender Spaltbreite nicht mehr erfüllt werden kann.In addition, the rake bars in the lower area are exposed to very high wear, which means that the requirement for a constant gap width can no longer be met.

Ferner ist aus der US-A-1773 576 ebenfalls eine solche Vorrichtung bekannt, bei der die der Kanalsohle zugewandten unteren Endbereiche der Rechenstäbe eine vor diesen angeordnete durchgehende Abdeckung aufweisen. Aber auch bei dieser bekannten Vorrichtung können vor und/oder hinter der Abdeckung sich aufbauender Sand und/oder Feststoffe zu Funktionsstörungen des Rechens führen. Außerdem ist eine Reinigung in diesem Bereich mit hohem Zeit- und Arbeitsaufwand verbunden.Furthermore, such a device is also known from US-A-1773 576, in which the lower end regions of the rake bars facing the channel bottom have a continuous cover arranged in front of them. But even with this known device, sand and / or solids that build up in front of and / or behind the cover can lead to malfunctions in the rake. In addition, cleaning in this area is time-consuming and labor intensive.

Von daher ist es Aufgabe der Erfindung, eine Vorrichtung der eingangs genannten Art zu schaffen, die nicht nur gewährleistet, daß eine Störung bzw. ein Blockieren des Doppelrostrechens durch Verkanten der beweglichen Abdeckung oder sich im unteren Bereich aufbauenden Sand und/oder Feststoffe vermieden werden kann, sondern daß auch eine Reinigung in diesem Bereich nicht erforderlich ist bzw. auf einfache Weise ermöglicht wird.It is therefore an object of the invention to provide a device of the type mentioned at the outset which not only ensures that a malfunction or blocking of the double grating rake can be avoided by tilting the movable cover or sand and / or solids building up in the lower region , but that cleaning in this area is not required or is made possible in a simple manner.

Diese Aufgabe wird erfindungsgemäß durch die im kennzeichnenden Teil des Anspruchs 1 angegebenen Merkmale gelöst.This object is achieved by the features specified in the characterizing part of claim 1.

Zweckmäßige und vorteilhafte Ausführungen der Erfindung sind in den Ansprüchen 2 und 3 angegeben, wobei die Lösung nach Anspruch 3 noch eine zusätzliche Sicherheit dafür bietet, daß die Spaltbreite erhalten bleibt.Appropriate and advantageous embodiments of the invention are given in claims 2 and 3, the solution according to Claim 3 offers an additional security that the gap width is maintained.

Im übrigen sind aus den US-A-2 106 851 und US-A-3 464 558 noch Vorrichtungen bekannt, die vor dem unteren Ende eines in einem Wasserkanal angeordneten Rechens zusätzliche Einrichtungen aufweisen, die verhindern, daß Felsbrocken oder andere schwere auf dem Boden des Kanals sich auf den Rechen zubewegende Gegenstände diesen beschädigen können.In addition, from US-A-2 106 851 and US-A-3 464 558 devices are known which have additional devices in front of the lower end of a rake arranged in a water channel, which prevent boulders or other heavy loads on the ground objects moving towards the screen can damage it.

Auch dieser bekannte Stand der Technik kann aber keinerlei Anregung zur Lösung der gestellten Aufgabe bei der gattungsbildenden Vorrichtung geben.However, this known prior art can give no suggestion for solving the task in the generic device.

Der wesentliche Vorteil der erfindungsgemäßen Ausbildung der gattungsbildenden Vorrichtung ist insbesondere darin zu sehen, daß eine Störung bzw. ein Blockieren des Doppelrostrechens auf einfache Weise vermieden werden kann und durch die Beweglichkeit und fliegende Lagerung der Klappe auch eine Selbstreinigung ermöglicht wird.The main advantage of the inventive design of the generic device can be seen in particular in that a malfunction or a blocking of the double grating can be avoided in a simple manner and self-cleaning is also made possible by the mobility and flying mounting of the flap.

Ein Ausführungsbeispiel der Erfindung wird im folgenden anhand der schematischen Zeichnung näher erläutert.An embodiment of the invention is explained below with reference to the schematic drawing.

Die Zeichnung zeigt einen Ausschnitt eines Doppelrostrechens 1, nämlich den unteren Teil im wesentlichen in Seitenaussicht.The drawing shows a section of a double screen 1, namely the lower part essentially in a side view.

Der Doppelrostrechen 1 mit seinen feststehenden Rechenstäben 2 und beweglichen Rechenstäben 3 ist in einem angedeuteten Gestell 4 angeordnet, das auf der Kanalsohle 5 eines nicht näher dargestellten Kanals steht. Die feststehenden Rechenstäbe 2 sind mittels eines Querbalkens 6, der über der Kanalsohle 5 auf der Unterwasserseite, also hinter den Rechenstäben 2, 3 angeordnet ist, so daß die feststehenden Rechenstäbe 2 im unteren Bereich Freiträger sind, im Gestell 4 befestigt.The double screen rake 1 with its fixed rake bars 2 and movable rake bars 3 is arranged in an indicated frame 4, which stands on the channel base 5 of a channel, not shown. The fixed rake bars 2 are by means of a cross bar 6, which is above the channel base 5 is arranged on the underwater side, that is, behind the rake bars 2, 3, so that the fixed rake bars 2 are cantilevers in the lower region, fastened in the frame 4.

Dadurch gibt es keine Ecken zwischen dem Laufzirkel 7 der beweglichen Rechenstäbe 3 und dem Querbalken 6. Die Unterkanten der feststehenden Rechenstäbe 2 sind etwas über der Kanalsohle 5 angeordnet.As a result, there are no corners between the compass 7 of the movable rake bars 3 and the crossbeam 6. The lower edges of the fixed rake bars 2 are arranged somewhat above the channel base 5.

Diese Öffnung 8 zwischen Kanalsohle 5 und feststehenden Rechenstäben 2 ist mittels einer beweglichen Klappe 9 abgedichtet, damit das Wasser mit den darin befindlichen Feststoffen nicht ungehindert durchfließen und sich hier auch kein Sand und/oder Feststoffe aufbauen können, die den Doppelrostrechen 1 blockieren.This opening 8 between the channel base 5 and the fixed rake bars 2 is sealed by means of a movable flap 9, so that the water with the solids therein does not flow unhindered and no sand and / or solids which block the double grating screen 1 can build up here.

Die bewegliche Klappe 9 ist fliegend derart gelagert, indem sie mit ihrer oberen Kante 10 an der untersten Stufe der feststehenden Rechenstäbe 2 anliegt und mit ihrer unteren Kante 11 auf der Kanalsohle 5 aufliegt und mittels einer oder mehrerer einerseits an der Rückwand der Klappe 9 und andererseits auf der Kanalsohle 5 befestigter Zugorgane 12 mit Belastung gehalten wird.The movable flap 9 is overhung in such a way that it rests with its upper edge 10 on the bottom step of the fixed rake bars 2 and rests with its lower edge 11 on the channel base 5 and by means of one or more on the one hand on the rear wall of the flap 9 and on the other hand on the channel bottom 5 attached traction elements 12 is held with load.

Durch die Beweglichkeit bzw. fliegende Lagerung der Klappe 9 ist es möglich, wenn sich Sand und/oder Feststoffe in diesem kritischen Bereich festsetzen wollen, daß diese in Richtung Stellung 13 oder 15 ausweicht. Dabei werden die sich festsetzen wollenden Feststoffe und/oder Sand von den beweglichen Rechenstäben 3 aus dem kritischen Bereich herausgedrückt, ohne daß sie sich gegen einen starren Teil festklemmen, so daß in diesem Bereich weitgehendst eine Selbstreinigung erfolgt.Due to the mobility or on-the-fly mounting of the flap 9, it is possible, if sand and / or solids want to get stuck in this critical area, that it diverts in the direction of position 13 or 15. The solids and / or sand that want to settle are pressed out of the critical area by the movable rake bars 3 without being stuck against a rigid part, so that self-cleaning takes place largely in this area.

Außerdem kann auch die untere Kante 11 der beweglichen Klappe 9 mittels eines Öffnungshebels 14 in Richtung Stellung 15 gebracht werden. Hierdurch wird der kritische Bereich vor dem Doppelrostrechen 1 gesäubert und Sandsedimentierung verhindert.In addition, the lower edge 11 of the movable flap 9 can also be brought in the direction of position 15 by means of an opening lever 14. This cleans the critical area before double grating 1 and prevents sand sedimentation.

BezugszeichenverzeichnisList of reference symbols

  • 1 Doppelrostrechen1 double screen
  • 2 feststehende Rechenstäbe2 fixed rakes
  • 3 bewegliche Rechenstäbe3 movable rulers
  • 4 Gestell4 frames
  • 5 Kanalsohle5 channel sole
  • 6 Querbalken6 crossbars
  • 7 Laufzirkel7 compasses
  • 8 Öffnung8 opening
  • 9 Klappe9 flap
  • 10 obere Kante10 top edge
  • 11 untere Kante11 lower edge
  • 12 Zugorgane12 traction elements
  • 13 Stellung13 position
  • 14 Öffnungshebel14 opening lever
  • 15 Stellung15 position

Claims (3)

  1. Apparatus for collecting and delivering solid substances which are carried on in water flowing in channels or the like, said device being in the form of a double grade (1) disposed on a frame and having fixed and moveable grade rods (2,3), the surfaces of which facing the flowing direction are stepped, the moveable grade rods (3) being connected together to form at least one unit which may be actuated by means of a drive mechanism imposing on the moveable grade rods (3) a closed path of movement located substantially in the plane of the grade rods (3), the upward movement component thereof being larger than the step heights of the fixed grade rods (2) and the lower end zones of the fixed grade rods (2) facing the channel bottom (5) having arranged before them a continuous cover moveable transversely to the flow direction, characterized in that the cover is conceived as moveable lid (9) such that it contacts with its upper edge (10) the lowest step of the fixed grade rods (2) and that it rests with its lower edge (11) on the channel bottom or the frame bottom, respectively, and that the cover is kept loaded by means of one or several drawing means (12) attached on the one side to the backwall of the lid (9) and on the other side to the channel bottom (5) or the frame bottom, respectively, and that the cover is flyingly mounted on bearings.
  2. Apparatus according to claim 1, characterized in that the moveable lid (9) comprises an opening lever (14).
  3. Apparatus according to claim 1 or 2, characterized in that the lower end zones of the fixed and/or moveable grade rods (2,3) are made of a highly wear resistant bearing synthetic material.
EP91117953A 1990-11-06 1991-10-22 Device for collecting and delivering solid particles from flowing water Expired - Lifetime EP0484724B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4035175 1990-11-06
DE4035175A DE4035175C2 (en) 1990-11-06 1990-11-06 Device for collecting and dispensing solids from flowing water

Publications (3)

Publication Number Publication Date
EP0484724A2 EP0484724A2 (en) 1992-05-13
EP0484724A3 EP0484724A3 (en) 1992-09-02
EP0484724B1 true EP0484724B1 (en) 1996-06-05

Family

ID=6417693

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91117953A Expired - Lifetime EP0484724B1 (en) 1990-11-06 1991-10-22 Device for collecting and delivering solid particles from flowing water

Country Status (3)

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EP (1) EP0484724B1 (en)
AT (1) ATE138995T1 (en)
DE (3) DE4035175C2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19755588C2 (en) * 1997-12-15 2001-03-22 Hans Huber Ag Masch & Anlagenb Device for removing material to be separated from liquid flowing in a channel
DE19937321A1 (en) 1999-08-10 2001-03-15 Gerd Meurer Umwelttechnologie Step rake
US20040112810A1 (en) 2000-12-05 2004-06-17 Christian Frommann Device for separating and removing separation materials from a flowing liquid
SE525381C2 (en) * 2004-04-26 2005-02-08 Mellegaard & Naij Ab Bottom seal for stepped weed trap in e.g. river, comprises hinged hatch pivotally connected to web

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1773576A (en) * 1926-03-16 1930-08-19 Dorr Co Bar screen
US1698387A (en) * 1927-04-02 1929-01-08 Ernest L Broome Clearing device for water racks
US2106851A (en) * 1936-07-02 1938-02-01 Chicago Pump Co Combined straining and comminuting apparatus
US3190448A (en) * 1962-01-08 1965-06-22 Rex Chainbelt Inc Bar screen with velocity-control baffles
DE1634031C3 (en) * 1966-06-23 1974-07-11 Chepos Zavody Chemickeho A Potravinarschskeho Strojirenstvi, Oborovy Podnik, Bruenn (Tschechoslowakei) Rake with cleaning device that can be folded up to the top
SE448106B (en) * 1985-05-24 1987-01-19 Wallander Hydropress Co Ab DEVICE FOR COLLECTION AND FEEDING OF STORED WATER BORN, SOLID PARTICLES
SE461284B (en) * 1988-06-10 1990-01-29 Wallander Hydropress Co Ab DEVICE FOR CLEANING GLASSES

Also Published As

Publication number Publication date
DE4035175C2 (en) 1994-08-25
EP0484724A3 (en) 1992-09-02
DE9017739U1 (en) 1992-02-27
DE59107889D1 (en) 1996-07-11
DE4035175A1 (en) 1992-05-07
EP0484724A2 (en) 1992-05-13
ATE138995T1 (en) 1996-06-15

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