EP0709525A1 - Grille pour un déversoir d'eau pluviale - Google Patents

Grille pour un déversoir d'eau pluviale 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
Authority
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Withdrawn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
Other languages
German (de)
English (en)
Inventor
Horst Bormet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0709525A1 publication Critical patent/EP0709525A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/12—Emergency outlets
    • 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
    • E02B8/026—Cleaning devices
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/12—Emergency outlets
    • E03F5/125—Emergency 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.

Landscapes

  • 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)
EP95116396A 1994-10-29 1995-10-18 Grille pour un déversoir d'eau pluviale Withdrawn EP0709525A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4438716 1994-10-29
DE19944438716 DE4438716A1 (de) 1994-10-29 1994-10-29 Siebrechen für einen Regenwasser-Überlauf

Publications (1)

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

Family

ID=6532026

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95116396A Withdrawn EP0709525A1 (fr) 1994-10-29 1995-10-18 Grille pour un déversoir d'eau pluviale

Country Status (2)

Country Link
EP (1) EP0709525A1 (fr)
DE (1) DE4438716A1 (fr)

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 (de) 2007-08-01 2009-02-05 Giehl, Klaus-Ulrich, Dipl.-Ing. (FH) Siebrechen an einer Überlaufschwelle einer Regenentlastungsanlage
CN112030887B (zh) * 2020-08-21 2021-12-10 四川中际建设工程有限公司 一种用于水利水电工程的过流集渣堰及其施工方法
CN112142135B (zh) * 2020-09-30 2022-08-09 深圳市建工建设集团有限公司 一种工程污水管网过滤系统

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE107874C (fr) *
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 (de) * 1972-02-04 1973-08-16 Albert Baehr Rechen fuer abwasserklaeranlagen oder dergleichen
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 (fr) *
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 (de) * 1972-02-04 1973-08-16 Albert Baehr Rechen fuer abwasserklaeranlagen oder dergleichen
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
DE4438716A1 (de) 1996-05-02

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