EP0520000A1 - Distributeur de liquide utilisable dans des lits filtrants granulaires - Google Patents

Distributeur de liquide utilisable dans des lits filtrants granulaires

Info

Publication number
EP0520000A1
EP0520000A1 EP91906387A EP91906387A EP0520000A1 EP 0520000 A1 EP0520000 A1 EP 0520000A1 EP 91906387 A EP91906387 A EP 91906387A EP 91906387 A EP91906387 A EP 91906387A EP 0520000 A1 EP0520000 A1 EP 0520000A1
Authority
EP
European Patent Office
Prior art keywords
bed
liquid
housing
intended
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.)
Withdrawn
Application number
EP91906387A
Other languages
German (de)
English (en)
Inventor
Zdenek Vor
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 EP0520000A1 publication Critical patent/EP0520000A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/02—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
    • B01D24/10—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being held in a closed container
    • B01D24/12—Downward filtration, the filtering material being supported by pervious surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/02—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
    • B01D24/10—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being held in a closed container
    • B01D24/14—Downward filtration, the container having distribution or collection headers or pervious conduits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/46—Regenerating the filtering material in the filter
    • B01D24/4626—Construction of spray heads specially adapted for regeneration of the filter material or for filtrate discharging

Definitions

  • the present invention relates to a liquid-distributor which is intended for distributing flushing or rinsing liquid and for filtered liquid and which is mounted in a granular filter bed.
  • liquid-distributing devices such as nozzles, perforated pipes or porous plates, are used in the lower part of the bed. These devices function to distribute the liquid to be filtered and flowing into the bed, as an outlet for the filtrate, i.e. as a means for draining the bed, and to introduce flushing or rinsing liquid in to the bed. All of these functions require the liquid to be spread evenly over a given bed volume and bed area, which is achieved by introducing a hydraulic resistance into the system.
  • the quantity of liquid is small and a low flow rate is desired, whereas large quantities of liquid are used when flushing the bed, and air is also added.
  • Filtering requires the presence of small openings, which must also be smaller than the granules or grains from which the bed is composed, since otherwise the granules would be liable to penetrate through the openings.
  • the liquid is liable to contain particles which are larger than the openings and the openings blocked, particularly when flushing or rinsing the bed.
  • the aforesaid devices are located deep within the bed and are inaccessible for cleaning purposes.
  • the inventive distributor is provided with small open ⁇ ings, apertures or slots intended for filtrate, which when filtering flows through in small quantities.
  • the quantity of liquid involved is from 5 to 10 times greater than the quan ⁇ tity used in filtration, a greater pressure is applied so that larger openings are opened and the small open- ings are closed in order to prevent the openings from being blocked or clogged.
  • the distributor housing is configured so that contaminants present in the flushing liquid and particle deposits in the housing will be flushed out of the housing by the powerful liquid flow.
  • the inventive distributor device can also be cleaned with the aid of water under high pressure or by mechan ⁇ ical means.
  • An exemplifying embodiment of the invention is illu- strated in cross-section in Figure 1.
  • a distributor is screwed into the base plate, a so-called double bottom, and includes an inlet pipe or tube which is provided with a slot or a bore 8 for flushing with air.
  • the distributor is housed in a housing 1 having an upper part 4 made of sheet metal or plastic.
  • the housing is perforated with slots 2 which have a width of 0.4 mm and which present a total area suitable for filtering purposes.
  • the inner surface of the slotted region is covered with a shield made of an elastic and resilient material, said shield covering the slots 2 and sealing- off the same.
  • the surface, or both surfaces, the one on the ring and the other on the housing may either be smooth and there- with seal against one another or may be serrated or rough, with a size which is smaller than the bed granu ⁇ les, so that the slot 9 will also contribute to the introduction of filtrate in the filtering mode.
  • Figure 2 illustrates a similar distributor which has been turned upside down and fitted to a pipe at the bottom of the filter.
  • the slots are formed in the elastic ring 3 and the shield 5 is either fitted appropriately to the ring 3 or is an integral part thereof.
  • Another e ' xample is a device which is intended for a filter in which the flushing liquid and the liquid to be filtered respectively exits from and is introduced into the filter bed through one and the same device and in one and the same direction of flow, whereas the filtrate is conducted to some other location in the bed.
  • the narrow slots intended for the introduction of filtrate are unnecessary and may be ommitted.
  • the distributors may have the form of a rotational body, may be four-cornered or polygonal, elongated or have some other suitable shape. Flushing liquid may be introduced and filtrate removed with the aid of hori ⁇ zontal pipes at the bottom of the filter, or with the aid of vertical pipes or double-bottoms onto which the distributors are secured.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtration Of Liquid (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)

Abstract

L'invention concerne un distributeur de liquide destiné à introduire un liquide de lavage ou de rinçage ainsi que le liquide devant être filtré dans un lit filtrant granulaire, et servant également à extraire le filtrat du lit. Le distributeur est utilisable dans un filtre servant à nettoyer les liquides; un ou plusieurs deistributeurs de ce type sont montés à l'intérieur du filtre, au fond de celui-ci. Le distributeur comprend un certain nombre de fentes étroites que traverse le filtrat, d'une largeur inférieure à celle de granules du lit. Le distributeur est pourvu d'une ou de plusieurs ouvertures dont la taille est beaucoup plus importante que celle des granules du lit. Ces ouvertures servent au liquide de lavage, qui est susceptible de renfermer des agents de contamination ou des particules de grandes dimensions, notamment lorsqu'on utilise le filtre pour filtrer des eaux d'égout. Chaque type d'ouverture est recouvert d'une protection résiliente ou faisant ressort, qui permet l'écoulement du liquide à l'intérieur du boîtier et à l'extérieur de ce dernier dans un sens correspondant aux ouvertures respectives.
EP91906387A 1990-03-16 1991-02-27 Distributeur de liquide utilisable dans des lits filtrants granulaires Withdrawn EP0520000A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9000952 1990-03-16
SE9000952A SE464966B (sv) 1990-03-16 1990-03-16 Vaetskefoerdelare foer filter med kornig baedd

Publications (1)

Publication Number Publication Date
EP0520000A1 true EP0520000A1 (fr) 1992-12-30

Family

ID=20378887

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91906387A Withdrawn EP0520000A1 (fr) 1990-03-16 1991-02-27 Distributeur de liquide utilisable dans des lits filtrants granulaires

Country Status (3)

Country Link
EP (1) EP0520000A1 (fr)
SE (1) SE464966B (fr)
WO (1) WO1991013670A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5087362A (en) * 1991-07-26 1992-02-11 F.B. Leopold Company, Inc. Flume distribution system with removable block
RU2147456C1 (ru) * 1999-05-20 2000-04-20 Общество с ограниченной ответственностью "Гидротехсервис" Дренажно-распределительное устройство водоподготовительного фильтра
RU2157719C1 (ru) * 1999-05-28 2000-10-20 ООО МВП "Фильтр" Устройство очистки питьевой воды "дельфин"
RU2229920C1 (ru) * 2003-02-10 2004-06-10 Общество с ограниченной ответственностью Производственное предприятие "ТЭКО-ФИЛЬТР" Фильтр для очистки жидкостей
US8876017B2 (en) * 2010-08-11 2014-11-04 Bilfinger Water Technologies, Inc. Variable flow screen nozzle

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK48979C (da) * 1932-12-09 1934-07-09 Krueger As J Anordning til Muliggørelse af Luftagiteringssystemers Anbringelse i det øverste, fine Sandlag i Hurtigfiltre.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9113670A1 *

Also Published As

Publication number Publication date
WO1991013670A1 (fr) 1991-09-19
SE464966B (sv) 1991-07-08
SE9000952D0 (sv) 1990-03-16

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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17P Request for examination filed

Effective date: 19920917

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE ES FR GB IT NL

17Q First examination report despatched

Effective date: 19940307

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19951005