FR2817486A1 - Water treatment bar screen capacity enhancer comprises a static grille replacing part of the buffer tank wall - Google Patents

Water treatment bar screen capacity enhancer comprises a static grille replacing part of the buffer tank wall Download PDF

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Publication number
FR2817486A1
FR2817486A1 FR0015775A FR0015775A FR2817486A1 FR 2817486 A1 FR2817486 A1 FR 2817486A1 FR 0015775 A FR0015775 A FR 0015775A FR 0015775 A FR0015775 A FR 0015775A FR 2817486 A1 FR2817486 A1 FR 2817486A1
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FR
France
Prior art keywords
grille
buffer tank
filtration
static
liquid
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.)
Granted
Application number
FR0015775A
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French (fr)
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FR2817486B1 (en
Inventor
Laurent Pierre Francis Cognee
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.)
POITEVINE DE FILTRATION SOC
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POITEVINE DE FILTRATION SOC
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Publication date
Application filed by POITEVINE DE FILTRATION SOC filed Critical POITEVINE DE FILTRATION SOC
Priority to FR0015775A priority Critical patent/FR2817486B1/en
Publication of FR2817486A1 publication Critical patent/FR2817486A1/en
Application granted granted Critical
Publication of FR2817486B1 publication Critical patent/FR2817486B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D36/00—Filter circuits or combinations of filters with other separating devices
    • B01D36/02—Combinations of filters of different kinds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
    • B01D29/52—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/62—Regenerating the filter material in the filter
    • B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
    • B01D29/6438—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/62—Regenerating the filter material in the filter
    • B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
    • B01D29/68—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
    • B01D29/90—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for feeding
    • B01D29/902—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for feeding containing fixed liquid displacement elements or cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
    • B01D29/90—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for feeding
    • B01D29/904—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for feeding directing the mixture to be filtered on the filtering element in a manner to clean the filter continuously
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
    • B01D33/073—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for inward flow filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/44—Regenerating the filter material in the filter
    • B01D33/46—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element
    • B01D33/466—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element scrapers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
    • B01D35/157—Flow control valves: Damping or calibrated passages

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Paper (AREA)

Abstract

The treatment system for water containing various solids, comprising a bar screen with a rotary drum (3), an untreated water intake, a buffer tank (2), a filtered water outlet (4) and a siphon partition (7), has its capacity enhanced by the incorporation of a static filtration grille (6) in place of a part of the buffer tank wall. The grille (6) is fitted with a shutter (8) to regulate the flow of liquid passing through it, while the siphon partition imparts sufficient speed to the liquid to carry the filtration refuse over the drum and towards a scraper (5). The cleaning of the filtration grille produced by the siphon partition action is completed by a washing bar (9) located to the rear of the grille.

Description

<Desc/Clms Page number 1> <Desc / Clms Page number 1>

La présente invention concerne un dispositif de filtration d'eau chargée de solides divers. Elle a pour but d'augmenter le débit admissible par un appareil connu : le dégrilleur à tambour rotatif (cf. fiche technique jointe).  The present invention relates to a device for filtering water loaded with various solids. Its purpose is to increase the admissible flow by a known device: the rotary drum screen (see attached technical sheet).

Le mode de fonctionnement de cet appareil est le suivant (cf. figure 1) : - Admission de l'eau brute en (1) - Remplissage de la zone tampon (2) - Filtration lors du passage à travers le tambour (3) avec rétention des déchets à la surface de ce dernier - Évacuation de l'eau filtrée en (4)
Le tambour filtrant (3), entraîné en rotation par un motoréducteur, entraîne les refus de filtration vers le racleur (5) où ils sont récupérés pour évacuation. The operating mode of this device is as follows (see Figure 1): - Raw water inlet in (1) - Filling of the buffer zone (2) - Filtration when passing through the drum (3) with retention of waste on the surface of the latter - Evacuation of filtered water in (4)
The filter drum (3), driven in rotation by a geared motor, causes the filter refusals to the scraper (5) where they are recovered for evacuation.

Le débit admissible par cet appareil est limité par la surface du tambour (3) en contact avec le liquide contenu dans la zone tampon (2) (cf. figure 2).  The flow rate admissible by this device is limited by the surface of the drum (3) in contact with the liquid contained in the buffer zone (2) (see Figure 2).

Le dispositif selon l'invention (cf. figure 3) permet d'augmenter le débit admissible par l'appareil sans en changer ni la forme ni la dimension. IL s'agit de remplacer une partie de la tôle pleine constituant le bac tampon par une grille de filtration (6) de même seuil de coupure que le tambour filtrant (3). Cette grille de filtration sera constituée soit d'une tôle perforée, d'une toile filtrante à maille ou d'une grille à fissures à barreaux trapézoïdaux type SPF ou équivalent.  The device according to the invention (cf. FIG. 3) makes it possible to increase the admissible flow rate by the device without changing either the shape or the dimension. IT involves replacing part of the full sheet metal constituting the buffer tank with a filtration grid (6) with the same cut-off threshold as the filter drum (3). This filtration grid will consist of either a perforated sheet, a mesh filter cloth or a crack grid with trapezoidal bars type SPF or equivalent.

Positionné sur toute ou partie de la zone de communication entre le bac tampon (2) et la zone d'évacuation du liquide filtré, cet élément assurera une augmentation du débit de l'appareil, proportionnelle à la surface filtrante. Un dispositif d'obturation partiel ou total (8) permettra d'améliorer le fonctionnement de l'ensemble en optimisant la surface ouverte offerte au liquide à filtrer.  Positioned over all or part of the communication area between the buffer tank (2) and the filtered liquid discharge area, this element will ensure an increase in the device's flow rate, proportional to the filtering surface. A partial or total sealing device (8) will improve the operation of the assembly by optimizing the open surface offered to the liquid to be filtered.

<Desc/Clms Page number 2> <Desc / Clms Page number 2>

Afin d'éviter le colmatage de la grille de filtration (6) la position de la cloison siphoïde (7), ainsi que son inclinaison, assureront en gradient de vitesse du liquide à filtrer suffisant pour véhiculer vers le tambour les refus de dégrillage qui sinon entraîneraient en s'accumulant le colmatage de l'élément filtrant (6). Ce dispositif d'autonettoyage pourra être complété par une rampe de lavage (9) située à l'arrière de la surface filtrante pour en assurer le décolmatage à contre-courant. Le même dispositif pourra être installé à l'avant. In order to avoid clogging of the filtration grid (6), the position of the siphon partition (7), as well as its inclination, will ensure in speed gradient of the liquid to be filtered sufficient to convey to the drum the screen refusals which otherwise would accumulate clogging of the filter element (6). This self-cleaning device may be supplemented by a washing ramp (9) located at the rear of the filter surface to ensure unclogging against the current. The same device can be installed at the front.

Claims (4)

REVENDICATIONS 1) Dispositif destiné à augmenter la capacité de filtration de dégrilleurs à tambour rotatif (3), le dégrilleur comportant une admission en eau brute, un bac tampon (2), une évacuation de l'eau filtrée, une cloison siphoïde (7) caractérisé en ce qu'il est constitué d'une grille de filtration statique (6) remplaçant une partie de la tôle pleine constituant le bac tampon (2). 1) Device intended to increase the filtration capacity of screens with rotary drum (3), the screen comprising a raw water intake, a buffer tank (2), an evacuation of filtered water, a siphon partition (7) characterized in that it consists of a static filtration grid (6) replacing part of the full sheet metal constituting the buffer tank (2). 2) Dispositif selon la revendication 1 caractérisé en ce que la grille de filtration (6) est munie d'un volet (8) pour régler le débit du liquide admissible à cette grille de filtration.  2) Device according to claim 1 characterized in that the filtration grid (6) is provided with a flap (8) for adjusting the flow rate of the liquid admissible to this filtration grid. 3) Dispositif selon l'une quelconque des revendications précédentes caractérisé en ce que la cloison siphoïde (7) communique au liquide à filtrer une vitesse suffisante pour véhiculer les refus de filtration de la grille de filtration statique (6) vers le tambour rotatif (3) qui les évacue vers le racleur (5).  3) Device according to any one of the preceding claims, characterized in that the siphon partition (7) communicates to the liquid to be filtered at a speed sufficient to convey the filtration refusals from the static filtration grid (6) to the rotary drum (3 ) which discharges them towards the scraper (5). 4) Dispositif selon l'une quelconque des revendications précédentes caractérisé en ce que le nettoyage de la grille de filtration (6) obtenu par l'action de la cloison siphoïde (7) sur le liquide à filtrer est complété par une rampe de lavage (9) située à l'arrière de l'élément filtrant (6). 4) Device according to any one of the preceding claims, characterized in that the cleaning of the filtration grid (6) obtained by the action of the siphon partition (7) on the liquid to be filtered is completed by a washing ramp ( 9) located at the rear of the filter element (6).
FR0015775A 2000-12-04 2000-12-04 INCREASE IN THE ADMISSIBLE FLOW RATE BY ROTARY DRUM SCREENERS Expired - Fee Related FR2817486B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0015775A FR2817486B1 (en) 2000-12-04 2000-12-04 INCREASE IN THE ADMISSIBLE FLOW RATE BY ROTARY DRUM SCREENERS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0015775A FR2817486B1 (en) 2000-12-04 2000-12-04 INCREASE IN THE ADMISSIBLE FLOW RATE BY ROTARY DRUM SCREENERS

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FR2817486A1 true FR2817486A1 (en) 2002-06-07
FR2817486B1 FR2817486B1 (en) 2003-09-05

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114515462A (en) * 2022-03-16 2022-05-20 徐州鑫业达环保科技有限公司 High-efficient gyration grid check de-dirt machine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3876548A (en) * 1972-06-22 1975-04-08 Hydrocyclonics Corp Screening method and apparatus
EP0033482A1 (en) * 1980-01-23 1981-08-12 Passavant-Werke Ag Device for separating solid impurities from liquids
WO1984004293A1 (en) * 1983-04-29 1984-11-08 Boerje Hellman A device for purification of liquid media such as waste water
US5051195A (en) * 1988-10-13 1991-09-24 Sunds Defibrator Rauma Oy Method and equipment for filtration of suspension
DE29712366U1 (en) * 1997-07-12 1997-09-25 Geiger, Robert, 89335 Ichenhausen Device for filtering water

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3876548A (en) * 1972-06-22 1975-04-08 Hydrocyclonics Corp Screening method and apparatus
EP0033482A1 (en) * 1980-01-23 1981-08-12 Passavant-Werke Ag Device for separating solid impurities from liquids
WO1984004293A1 (en) * 1983-04-29 1984-11-08 Boerje Hellman A device for purification of liquid media such as waste water
US5051195A (en) * 1988-10-13 1991-09-24 Sunds Defibrator Rauma Oy Method and equipment for filtration of suspension
DE29712366U1 (en) * 1997-07-12 1997-09-25 Geiger, Robert, 89335 Ichenhausen Device for filtering water

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114515462A (en) * 2022-03-16 2022-05-20 徐州鑫业达环保科技有限公司 High-efficient gyration grid check de-dirt machine

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Publication number Publication date
FR2817486B1 (en) 2003-09-05

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