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WO2002057549A1 - Grille de filtre autonettoyante - Google Patents

Grille de filtre autonettoyante Download PDF

Info

Publication number
WO2002057549A1
WO2002057549A1 PCT/DK2002/000019 DK0200019W WO02057549A1 WO 2002057549 A1 WO2002057549 A1 WO 2002057549A1 DK 0200019 W DK0200019 W DK 0200019W WO 02057549 A1 WO02057549 A1 WO 02057549A1
Authority
WO
WIPO (PCT)
Prior art keywords
grating
elements
self
cleaning
filter
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.)
Ceased
Application number
PCT/DK2002/000019
Other languages
English (en)
Inventor
Kaj Stjernholm
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 WO2002057549A1 publication Critical patent/WO2002057549A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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

Definitions

  • the present invention relates to a self-cleaning filter grating which is typically used in connection with the filtration of overflow water from sewer systems, where the water from the overflow channels is to be conveyed to a cleaning system.
  • the use of the carriage involves several drawbacks, e.g. it cannot pass 5 an obstacle which is stuck in the grating, if it takes a greater force to remove the obstacle than the one which the carriage can supply. In such a situation, the grating will therefore not be cleaned in the area which is disposed after the blocking material, which reduces the efficiency of the filter grating of course.
  • the object of the present invention is to provide a self-cleaning grating which does not have a travelling cleaning carriage, and which, continuously and independently of time, keeps the entire grating cleaned uniformly. Also, the invention ensures that the grating may be cleaned over its entire effective area, even if, at one or more locations, the grating is blocked by stuck material from the water which is to be cleaned.
  • Fig. 1 shows the complete grating from above (Fig. 1-A) and from the side (Fig. 1-B).
  • the grating consists of parallel grating elements with gaps for the passage of the water which is to be cleaned.
  • the parallel grating elements are visible in Fig. 1-B.
  • the grating will filter all particles larger than the gap between the individual grating elements.
  • a motor is arranged on the top, driving a shaft that runs through all the grating elements.
  • Fig. 2 is a view of some of the individual grating elements arranged in the grating housing, seen from above.
  • Fig. 2-A one of the otherwise identical grating elements is shown in accentuated gray/black view.
  • the ends of each grating element are formed with a hole which is larger than the diameter of the shaft that passes through all the elements.
  • a disc having a spline hole fitting the spline in the shaft from the motor arranged on the top of the grating, is place ⁇ f in the holes in the grating elements.
  • the spline hole in the discs is either positioned in the centre of the disc or eccentrically.
  • the grating elements which are positioned in parallel on top of each other with a gap between them for the flow of the water which has been filtered, are now alternately provided with discs having centered spline holes or discs having eccentric spline holes. When the shaft rotates, the grating elements will therefore alternately be fixed in the same position or perform a rotary movement determined by the eccentrically arranged spline holes.
  • Fig. 2 B shows how the grating elements provided with discs having centered spline holes are always in the same position independent of the rotation of the drive shaft, while the grating elements provided with the , eccentrically arranged spline holes will move as a function of the rotation of the drive shaft.
  • Figs. 3 and 4 show in cross-section how the cleaning elements are 0 alternately fixed and move in the horizontal plane in a circular movement.
  • a body which has been braked by the cleaning grating will now be n pushed away from the grating, while the body is moved in one specific direction in parallel with the grating surface as a consequence of the discontinuous movements which are generated by every second grating element. 5
  • Fig. 2 shows in point C a cleaning comb which consists of a plate which is arranged transversely to the parallel grating elements, and which has 0 teeth extending into the gaps between the grating elements.
  • the cleaning comb is also shown in another section in fig. 4.
  • the _. cleaning comb has the function that it will brake the filtered objects which are pushed along the cleaning grating, thereby allowing the filtered objects to be collected and conveyed away from the cleaning grating.
  • the cleaning comb has the additional function that it prevents the parallel filter elements from bending downwards, which might be a problem in long gratings manufactured in accordance with the present invention.
  • self-cleaning filter gratings manufactured in accordance with the present invention may be used in many other connections than the cleaning of water mentioned here.
  • Fig. 1 shows an example of a self-cleaning filter grating manufactured in accordance with the present invention.
  • Fig. 1 A shows the filter seen from above.
  • Fig. 1 B shows the filter seen from the side.
  • Fig. 2 shows an example of a filter grating having alternately movable and fixed parallel stay-shaped grating elements.
  • the left half of the figure shows the movable grating elements in four different positions as a function of the angle of rotation, shown in steps of 90 degrees, of the rotating eccentric drive elements.
  • the right half of the figure shows how the fixed grating elements are positioned.
  • the filter in the shown example is constructed such that the grating alternately has fixed and movable grating elements.
  • Fig. 3 shows in a section taken in the longitudinal direction of a self- cleaning filter how the filter elements are moved mutually in three phases of the angle of rotation of the eccentric drive elements.
  • the filter elements are alternately fixed and movable.
  • Fig. 4 shows in a section taken in the longitudinal direction of a self- cleaning filter how the filter elements are moved mutually in three phases 1 of the angle of rotation of the eccentric drive elements.
  • the filter elements are alternately fixed and movable.
  • Fig. 4 A shows a couple of the moving elements.
  • Fig. 4 B shows a couple of the fixed elements.
  • Fig. 4. C shows the cleaning comb.
  • FIG. 5 shows a photo of a self-cleaning filter grating produced with two combs in water action.
  • ⁇ J ⁇ Fig. 6 shows a photo of a self-cleaning filter grating produced with two combs in water action.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Abstract

L'invention concerne une grille de filtre autonettoyante conçue de manière à ce que la grille comprenne des éléments de filtre discrets et parallèles en forme d'entretoises, qui peuvent se déplacer les uns par rapport aux autres et faire en sorte que les matières bloquées par la grille de filtre ne s'incrustent pas dans ladite grille mais soient repoussées vers l'extérieur du filtre, par le mouvement réciproque des éléments de filtre, ce qui permet de réaliser un filtre autonettoyant.
PCT/DK2002/000019 2001-01-18 2002-01-11 Grille de filtre autonettoyante Ceased WO2002057549A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA200100091 2001-01-18
DKPA200100091 2001-01-18

Publications (1)

Publication Number Publication Date
WO2002057549A1 true WO2002057549A1 (fr) 2002-07-25

Family

ID=8160051

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK2002/000019 Ceased WO2002057549A1 (fr) 2001-01-18 2002-01-11 Grille de filtre autonettoyante

Country Status (1)

Country Link
WO (1) WO2002057549A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0098820A2 (fr) * 1982-07-05 1984-01-18 Hydropress Wallander & Co Ab Dispositif apte à recueillir et à enlever des matières solides
SE458862B (sv) * 1988-03-18 1989-05-16 Ola Mileson Anordning foer separering och transport av material
SE470102B (sv) * 1991-05-29 1993-11-08 Mellegard Va Maskiner Ab Rensanordning
DE19714089A1 (de) * 1997-04-07 1998-10-08 Manfred Huetten Filterstufenrechen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0098820A2 (fr) * 1982-07-05 1984-01-18 Hydropress Wallander & Co Ab Dispositif apte à recueillir et à enlever des matières solides
SE458862B (sv) * 1988-03-18 1989-05-16 Ola Mileson Anordning foer separering och transport av material
SE470102B (sv) * 1991-05-29 1993-11-08 Mellegard Va Maskiner Ab Rensanordning
DE19714089A1 (de) * 1997-04-07 1998-10-08 Manfred Huetten Filterstufenrechen

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