WO2000062896A1 - Appareil de criblage par separation - Google Patents

Appareil de criblage par separation Download PDF

Info

Publication number
WO2000062896A1
WO2000062896A1 PCT/GB2000/001400 GB0001400W WO0062896A1 WO 2000062896 A1 WO2000062896 A1 WO 2000062896A1 GB 0001400 W GB0001400 W GB 0001400W WO 0062896 A1 WO0062896 A1 WO 0062896A1
Authority
WO
WIPO (PCT)
Prior art keywords
screen
screening apparatus
liquid
movement
solids
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/GB2000/001400
Other languages
English (en)
Inventor
David Ray
Richard Brookwell
Geoffrey Bayley
Martin Snow
Andrew Webb
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.)
Pfaulder Process Solutions Group Stonehouse Ltd
Original Assignee
Robbins and Myers Ltd
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 Robbins and Myers Ltd filed Critical Robbins and Myers Ltd
Priority to AU45783/00A priority Critical patent/AU4578300A/en
Priority to EP00927375A priority patent/EP1187665A1/fr
Publication of WO2000062896A1 publication Critical patent/WO2000062896A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • B01D33/04—Filters with filtering elements which move during the filtering operation with filtering bands or the like supported on cylinders which are impervious for filtering
    • 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
    • B01D33/48—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
    • B01D33/50—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles

Definitions

  • the invention to which this application relates is a screening apparatus which allows solid and/or other waste material to be separated from a liquid containing solids which impacts onto the screen.
  • the use of screens is relatively well known in sewage, food processing and any form of industry where a solid matter is collected in liquids and required to be separated therefrom.
  • the apparatus is for screening solid matter from a liquid and moving said solid matter to a point for collection or passage into another flow of liquid, to another solids transfer device or subsequent return to the existing flow.
  • the aim of the present invention is to provide a screening apparatus which allows for the screening of the solid material from liquid and movement in an efficient manner of the material to a point for collection and/or movement into another flow of liquid, to another solids transfer device or subsequent return to the existing flow.
  • screening apparatus for a liquid containing solids comprising a screen with a series of perforations to allow liquid to pass therethrough and at least some of the solid matter to be collected on the screen, means for movement of the screen and wherein the screen is formed of sheet material in contact with drive means which move the sheet material in a direction to allow the flow of the liquid therethrough and on which at least some of the solid matter is trapped.
  • the perforations are circular but may alternatively be slotted or any other desirable aperture shape.
  • the size of the apertures can be selected to suit particular screening and solids trapping requirements.
  • the screen is arranged with respect to the flow of liquid and solid matter so that the direction of flow of the liquid with solids is substantially in line with the movement of the screen.
  • the direction of movement of the screen is the same as the direction movement of the liquid containing solids.
  • the direction of movement o f the screen is the opposite to the direction of movement of the liquid containing solids.
  • said movement of the screen in an opposite direction occurs during pre-determined intervals of the time that the screen is in operation
  • the solids are screened in this embodiment by the liquid component passing through the perforations to the side due to the differential in pressure on the facing and reverse faces of the sheet material which makes up the screen which encourages the passage of the liquid component through the perforations.
  • the solid matter is prevented from passing through the screen and is trapped on the surface of the screen and prevents passage of the solids through the screen.
  • the screen in one embodiment of use, is provided for use in dealing with exceptionally high .volumes of liquid, it is undesirable for the screen to be operating in normal conditions and so the same can be controlled by liquid level sensors which operate the screen for movement when the level of the liquid and solid .matter reaches a certain height and stops the screen when the level falls below a specified height.
  • the screen forms at least a portion of a side wall of a channel or passage along which the liquid and solid flows .
  • the screen is arranged for use so that the face of the screen lies in a substantially vertical plane as it moves substantially in line with the flow of the liquid and solid matter.
  • the screen may also be moved in the opposite direction to the flow of liquid, either during the whole of the time that the screen is in operation or for pre-determined intervals during the period of operation.
  • the screen apparatus may be arranged so that the screen is substantially perpendicular to the direction of the liquid flow.
  • the liquid passes through the perforations and the solid matter is trapped on the surface of the screen.
  • the screen moves in an upward direction to transfer solids out of the liquid flow to a discharge point.
  • the screen may also be arranged so that its face is at an inclined angle to the vertical plane, projecting into the flow.
  • the screen is in the form of a belt which is moved along the area or channel along which the liquid and solid matter moves, and the belt is moved by rollers mounted at each end of the belt.
  • the belt is a continuous belt inasmuch that there are no gaps in the belt.
  • the belt is formed by a length of material whose ends are joined to form the continuous function, or alternatively the belt is formed from a series of panels held in a position so that respective adjacent ends of the panels are joined or abut one another.
  • the screen may be fitted with raised 'flights' regularly spaced along the length of the screen, the purpose of which is to assist the transfer of solids to the discharge point.
  • the belt is formed from plastics material with a series of perforations formed therein or alternatively can be formed from stainless steel sheet or yet further can be provided from a composite material again with perforations formed therein. Typically the perforation size and pattern of location will be dependant upon the screening efficiency required and the materials to be screened.
  • the composite material can include a layer of KEVLAR (RTM) .
  • the screen is provided with two or more drive and/or guide belts which can be provided to act as means for engagement with the drive rollers to impart a driving force and/or a guiding means for the screen.
  • the drive and/or guide belts can be laminated or otherwise joined to the screen and, if used as drive belts, provided with teeth to engage the drive.
  • chains may be fitted to the screen to act as means for engagement with the drive rollers or sprockets that are fitted with teeth to engage with the chains.
  • tensioning means are provided to allow the screen to be kept and held to the required tension so as to maintain screening efficiency during operation.
  • FIG. 1 illustrates a plan of the screening apparatus according to one embodiment of the invention
  • Fig. 2 illustrates an elevation of the apparatus of Fig. 1 ;
  • Fig. 3 illustrates a detailed view of a drive arrangement for the screen
  • Figure 4A-4C - illustrate a side view, elevation and plan respectively of a further embodiment of the invention.
  • screening apparatus 2 for the separation of solid matter from a liquid for use for Combined sewage overflow .applications and/or storm water discharge channels where the liquid and solid matter moves along a channel substantially in line with the movement of the screen 6 in the direction of arrow 4.
  • FIG.3 this shows one embodiment of the screening apparatus when used in combined sewage overflow applications and/or storm water discharge channels 28.
  • the apparatus is mounted in a weir 27.
  • the screening apparatus comprises a screen 6 formed as a continuous belt and passing round rollers 8 and 10 both or either of which can be provided to drive the belt.
  • the screen is provided to move in the direction o f arrow 12 so that it moves substantially in line with the direction of flow 4 of the liquid to be separated.
  • the screen can be formed of plastics material or a composite plastics material or stainless steel and in whichever embodiment may include drive and/or guide belts 16 and/or chains at spaced intervals .
  • the screen is provided with a series of apertures 1 8, shown for illustration purposes in the top left hand corner of the screen in Fig.
  • the perforations are provided to allow the liquid to pass through the screen with the solids material being retained on the surface of the screen and moved, along with movement of the screen to a collection point at one side of the apparatus and/or for placement in another flow of liquid.
  • the screen may be fitted with raised flights 26 regularly spaced along the length of the screen, the purpose of which is to assist the transfer to the discharge point.
  • the screen can be provided with scraper bars, rotating cleaning brush 24 or other means for discharging the solids material from the screen into a collection means or back into the main flow downstream of the screen so that it will be appreciated that in the use described the screen is provided to allow for the removal of excess water without solids matter.
  • an air diffuser pipe 25 may be fitted and orientated so that the air is blown through the screen from the liquid discharge side of the screen.
  • the purpose of the air diffusion is to aid the cleaning of solids from the surface of the belt.
  • the apparatus further comprises a frame which can be used to support the screen and improve the general apparatus and upon which are mounted the rollers for providing drive to the screen and a drive motor 22 for controlling the speed of the rollers .
  • FIG. 4a, 4b and 4c Another embodiment of the screening apparatus is shown in Figures 4a, 4b and 4c where the plane of the screen 6 is substantially perpendicular to the direction of flow 4.
  • the direction of travel 12 of the screen 6 is such that separated solids are elevated out of the liquid flow to the solids discharge point 29.
  • the screen 6 may be cleaned by either a wash water spray bar 30 or a rotating cleaning brush 24 or a combination of both.
  • the screening apparatus may be fitted at varying angles to the base of the channel to optimise the efficiency of the screen in respect of the particular application in this embodiment.
  • the drive arrangement can be by a number of means and two particularly attractive means are the use of tensioned rollers which can be used to particular advantage with plastics/composite belts and/or stainless steel belts which can be provided on the screen as hereinbefore described and engage with the drive rollers to drive the screen.
  • tensioned rollers which can be used to particular advantage with plastics/composite belts and/or stainless steel belts which can be provided on the screen as hereinbefore described and engage with the drive rollers to drive the screen.
  • a further alternative is to use chains to engage with the drive means.
  • the apparatus of the present invention is advantageous in terms of efficiency in removal of solid matter from liquid and the movement of the solid matter from the separation point to collection point.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtration Of Liquid (AREA)

Abstract

Un appareil de criblage destiné à un liquide contenant des matières solides comprend un crible doté d'une série de perforations qui laissent passer le liquide et au moins une certaine quantité de matière solide récupérée par le crible. L'appareil de criblage comprend un système qui permet de faire bouger le crible, ledit crible étant formé d'un matériau en feuilles qui se trouve en contact avec un système d'entraînement servant à déplacer le matériau en feuilles dans un sens qui peut, dans une forme de réalisation, être sensiblement aligné sur l'écoulement du liquide contenant des matières solides, ou bien qui, dans une autre forme de réalisation, se trouve perpendiculaire au sens de l'écoulement.
PCT/GB2000/001400 1999-04-20 2000-04-20 Appareil de criblage par separation Ceased WO2000062896A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU45783/00A AU4578300A (en) 1999-04-20 2000-04-20 Separation screening apparatus
EP00927375A EP1187665A1 (fr) 1999-04-20 2000-04-20 Appareil de criblage par separation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9908898.1 1999-04-20
GBGB9908898.1A GB9908898D0 (en) 1999-04-20 1999-04-20 Separation screening apparatus

Publications (1)

Publication Number Publication Date
WO2000062896A1 true WO2000062896A1 (fr) 2000-10-26

Family

ID=10851800

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2000/001400 Ceased WO2000062896A1 (fr) 1999-04-20 2000-04-20 Appareil de criblage par separation

Country Status (4)

Country Link
EP (1) EP1187665A1 (fr)
AU (1) AU4578300A (fr)
GB (1) GB9908898D0 (fr)
WO (1) WO2000062896A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001030481A1 (fr) * 1999-10-22 2001-05-03 Jones & Attwood Limited Dispositif de filtrage pour systeme d'egouts et procede de filtrage des eaux parasitaires dans un systeme d'egouts
GB2403438A (en) * 2003-03-06 2005-01-05 Three Star Enviromental Ltd Screening apparatus
US7297266B2 (en) 2003-09-17 2007-11-20 Contech Stormwater Solutions Inc. Apparatus for separating particulates from a fluid stream

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2255802A5 (en) * 1973-12-20 1975-07-18 Chard Hutchinson Abel System for removing debris from turbine water supply - has sprays cleaning debris from grill conveyor into cross flow
DE3003827A1 (de) * 1980-02-02 1981-08-13 Eduard Ing.(grad.) 5900 Siegen Pastoors Einrichtung zur mechanischen reinigung von waessern vermittels von rechen
US5480544A (en) * 1991-12-05 1996-01-02 Profit Improvement And Engineering Limited Belt filters
EP0728512A2 (fr) * 1995-02-21 1996-08-28 JONES & ATTWOOD LIMITED Grille
US5593579A (en) * 1996-02-16 1997-01-14 Reynolds; Michael L. Mechanically assisted hydraulic filter
US5618415A (en) * 1994-05-04 1997-04-08 Johnson Technology Management, Llc Method for removing debris from a free flowing water system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2255802A5 (en) * 1973-12-20 1975-07-18 Chard Hutchinson Abel System for removing debris from turbine water supply - has sprays cleaning debris from grill conveyor into cross flow
DE3003827A1 (de) * 1980-02-02 1981-08-13 Eduard Ing.(grad.) 5900 Siegen Pastoors Einrichtung zur mechanischen reinigung von waessern vermittels von rechen
US5480544A (en) * 1991-12-05 1996-01-02 Profit Improvement And Engineering Limited Belt filters
US5618415A (en) * 1994-05-04 1997-04-08 Johnson Technology Management, Llc Method for removing debris from a free flowing water system
EP0728512A2 (fr) * 1995-02-21 1996-08-28 JONES & ATTWOOD LIMITED Grille
US5593579A (en) * 1996-02-16 1997-01-14 Reynolds; Michael L. Mechanically assisted hydraulic filter

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001030481A1 (fr) * 1999-10-22 2001-05-03 Jones & Attwood Limited Dispositif de filtrage pour systeme d'egouts et procede de filtrage des eaux parasitaires dans un systeme d'egouts
GB2403438A (en) * 2003-03-06 2005-01-05 Three Star Enviromental Ltd Screening apparatus
GB2403438B (en) * 2003-03-06 2005-07-27 Three Star Enviromental Ltd Screening apparatus
US7364652B2 (en) 2003-03-06 2008-04-29 Three Star Environmental Ltd. Screening apparatus
US7297266B2 (en) 2003-09-17 2007-11-20 Contech Stormwater Solutions Inc. Apparatus for separating particulates from a fluid stream

Also Published As

Publication number Publication date
EP1187665A1 (fr) 2002-03-20
GB9908898D0 (en) 1999-06-16
AU4578300A (en) 2000-11-02

Similar Documents

Publication Publication Date Title
US6250476B1 (en) Municipal waste separator
EP2473680B1 (fr) Appareil a plaque mince servant a eliminer des debris de l'eau
EP2835182B1 (fr) Cabine de peinture équipée d'un dispositif de purification
RU2271852C2 (ru) Способ и устройство для отделения жидкостей от твердых веществ, снабженное средствами для отбора жидкости снизу и по бокам сквозь транспортерную ленту
AU708448B2 (en) Screen
JP6472095B2 (ja) 連続ベルトスクリーン
KR101887831B1 (ko) 협잡물 퇴적방지구조가 적용된 계단식 여과기
US20040262242A1 (en) Screening apparatus
US3674145A (en) Method and apparatus for clarifying liquids
WO1991017807A1 (fr) Tamis en bande
WO2000062896A1 (fr) Appareil de criblage par separation
GB2459588A (en) Device for removing and carrying off filtered deposits
KR100949384B1 (ko) 제진기 스크린
US20130032548A1 (en) Traveling screen machine
JP2007032263A (ja) 水平移動ウオータースクリーン
PL124901B1 (en) Band filter for continuous dewatering of suspension
US20220118382A9 (en) Thin plate apparatus for removing debris from water
JP3194421B2 (ja) 除塵装置
KR102363813B1 (ko) 제진기
JP2001049642A (ja) 河川水の除塵装置
KR200327685Y1 (ko) 필터프레스
KR100363985B1 (ko) 협잡물 제거장치
WO1992008539A1 (fr) Grille a helice transporteuse
GB2454768A (en) Grit Elevator
JPH0418641Y2 (fr)

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
WWE Wipo information: entry into national phase

Ref document number: 2000927375

Country of ref document: EP

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

WWP Wipo information: published in national office

Ref document number: 2000927375

Country of ref document: EP

WWW Wipo information: withdrawn in national office

Ref document number: 2000927375

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: JP