GB2369785A - A filter apparatus - Google Patents

A filter apparatus Download PDF

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Publication number
GB2369785A
GB2369785A GB0030023A GB0030023A GB2369785A GB 2369785 A GB2369785 A GB 2369785A GB 0030023 A GB0030023 A GB 0030023A GB 0030023 A GB0030023 A GB 0030023A GB 2369785 A GB2369785 A GB 2369785A
Authority
GB
United Kingdom
Prior art keywords
conveyor belt
brush
filter apparatus
solids
lifter
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
GB0030023A
Other versions
GB2369785B (en
GB0030023D0 (en
Inventor
Brian Alexander Brockie
Alan Alfred Miles
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.)
VESA Ltd
Original Assignee
VESA 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 VESA Ltd filed Critical VESA Ltd
Priority to GB0030023A priority Critical patent/GB2369785B/en
Publication of GB0030023D0 publication Critical patent/GB0030023D0/en
Publication of GB2369785A publication Critical patent/GB2369785A/en
Application granted granted Critical
Publication of GB2369785B publication Critical patent/GB2369785B/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
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/333—Filters with filtering elements which move during the filtering operation with individual filtering elements moving along a closed path
    • 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
    • B01D33/465—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element take-off rollers
    • 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
    • B01D33/70—Filters with filtering elements which move during the filtering operation having feed or discharge devices
    • B01D33/76—Filters with filtering elements which move during the filtering operation having feed or discharge devices for discharging the filter cake, e.g. chutes

Landscapes

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

Abstract

A filter apparatus for removing solids from a flowing liquid stream 4 comprises an endless filter conveyor belt 2, support means to locate upper and lower part of belt submerged in the liquid stream, drive means 6, 8 to drive the conveyor belt 2 with the upstream part of the belt travelling upwardly and having a plurality of longitudinal spaced perforated plates, at least one lifter brush 16 extending across the conveyor belt to lift and discharge solids from the belt and a cleaner brush 24 located adjacent a discharge region 26. Additional lifting means such as elongate tines may be provided to lift solids too heavy to be supported by the lifter brush.

Description

A FILTER APPARATUS The present invention relates to a filter apparatus for removing solids from a liquid stream, and more particularly to a filter apparatus including a filter medium in the form of an endless movable belt for removing solids contained in the liquid stream.
The invention is particularly concerned with, but not restricted to, a filter apparatus for removing solids from water or other liquids intended for industrial use or for drinking, or the recovery of solids for further use.
According to the present invention there is provided a filter apparatus for removing solids from a flowing liquid stream, said apparatus comprising an endless filter conveyor belt, support means to locate said conveyor belt, with the lower part of said belt submerged in said liquid stream, and the upper part of said conveyor belt above said liquid stream, drive means to drive said conveyor belt with the upstream part of the belt travelling upwardly, in which the conveyor belt comprises a plurality of longitudinally spaced perforated plates, at least one lifter brush extending across said conveyor belt to lift solids from the stream, and to allow the solids to be discharged from the conveyor belt at a discharge region, and a cleaner brush located adjacent to the discharge region to remove solids remaining on the conveyor belt.
Instead of a single lifter brush a plurality of lifter brushes may be provided spaced longitudinally along the length of the conveyor belt. The or each lifter brush may comprise transversely spaced sets of bristles extending from the conveyor belt in an upstream direction.
The cleaner brush may comprise a set of bristles arranged to interact with the bristles of the lifting brush to remove solids therefrom. Preferably the cleaner brush may comprise a plurality of said sets of bristles suitably spaced from one another. In order to facilitate the removal of solids from the conveyor belt, the cleaner brush may be rotatably driven.
The filter apparatus may further comprise additional lifting means extending across the belt to lift solids which are too heavy to be lifted by the lifter brush or brushes. This additional lifting means may comprise a set of transversely spaced elongate members extending from the conveyor belt in an upstream direction. Preferably, the filter apparatus includes a plurality of said sets of elongate members longitudinally spaced along said conveyor belt.
One embodiment of the invention will now be described by way of example with reference to the accompanying drawings in which: Figure 1 is a side view of a filter apparatus, Figure 2 is an enlarged perspective view of a lifter brush and part of a filter conveyor belt, Figure 3 is a perspective view of a cleaner brush, and Figure 4 is a perspective view of a set of lifting tines extending from a conveyor belt.
Referring to the drawings, and particularly to Figure 1, a filter apparatus of the invention includes an endless filter conveyor belt 2 adapted to filter solids from a liquid flowing through a channel 4 in the direction of the arrow A in Figure 1. The conveyor belt 2 passes over pairs of guide wheels 6 and upper tooth wheels 8. The pair of toothed wheels 8 are driving wheels for the conveyor belt and the pair of guide wheels 6 are idler wheels driven by the moving conveyor belt.
The conveyor belt 2 comprises flat metal perforated plates 10 which are hingedly connected to one another by hinges 12.
Each plate 10 has extending therethrough a large number of closely spaced circular perforations 14 dimensioned to prevent the passage therethrough of solids above a pre-selected size.
Referring particularly to Figure 2, a lifter brush 16 consists of transversely spaced sets of bristles 18 mounted on a stainless steel bracket 20 which is mounted on a plate 10 of the conveyor belt 2. The filter apparatus as shown in Figure 1 includes two lifter brushes 16 but will be understood that any suitable number of lifter brushes 16 can be used.
An additional lifting means shown in Figure 4 comprises a set of transversely spaced elongate tines 22 mounted on one of the plates 10. These tines, and the bristles 18, extend upstream of the upstream section of the conveyor belt 2. These tines 22 are spaced and constructed to support solids which are too heavy to be supported by the lifter brushes 16. As with the lifter brushes 16, any appropriate number of sets of tines 22 can be mounted on the conveyor belt 2.
A cleaner brush 24 is located adjacent to the discharge section 26 of the conveyor belt 2. The cleaner brush 24 comprises four sets of cleaner bristles 28 mounted on brackets 30 which are mounted on a tube 32 mounted on a drive shaft 34.
The cleaner bristles 28 and the brackets 30 are dimensioned to extend across substantially the entire width of the conveyor belt 2. Referring particularly to Figure 1, the cleaner brush 24 is positioned and dimensioned so that the cleaner bristles 28 of the cleaner brush 24 will pass through the bristles 18 of each lifter brush 16 when the lifter brushes 16 leave the discharge section 26 of the conveyor belt 2.
Referring particularly to Figure 1, in operation the driving wheels 8 drive the conveyor belt 2 in a clockwise direction, and the cleaner brush 24 is driven by means (not shown) also in a clockwise direction.
All the solids in the liquid stream which are larger than the diameter of the perforations 14 are prevented by their size from flowing through perforations 14 and are carried by an adjacent lifter brush 16 upwardly along the upstream part of the conveyor belt 2 over the pair of guide wheels 6 and along the horizontal upper section of the conveyor belt to the discharge section 26. When the conveyor belt 2 passes over the pair of driving wheels 8 the solids that have been caught and carried by the conveyor belt 2 are discharged from the conveyor belt 2 and fall under gravity onto a suitable receptacle (not shown) located under the pair of driving wheels 8.
Any solid debris that remains on the conveyor belt 2 after it has passed through the discharge section 26, would normally be returned to the liquid stream downstream of the conveyor belt 2 thereby contaminating the stream. In this embodiment, this remaining solid debris is removed by the rotating cleaner brush 24 thereby allowing the solid debris to fall into the aforementioned receptacle. Another advantageous feature of this cleaner brush 24 is that the bristles of the cleaner brush 24 travel in the opposite direction to and pass through the bristles of each lifter brush 16 thereby causing the two brushes to clean each other of attached solid debris.
If any solids in the liquid stream upstream of the conveyor belt 2 are too heavy to be conveyed by a lifter brush 16 these solids are held and conveyed by the tines 22 of the additional lifting means.
In this described embodiment the circular perforations 14 have a diameter of 6 millimetres, but the invention is not limited to perforations of any specific diameter.

Claims (9)

  1. CLAIMS 1. A filter apparatus for removing solids from a flowing liquid stream, said apparatus comprising an endless filter conveyor belt, support means to locate said conveyor belt with the lower part of said belt submerged in said liquid stream, and the upper part of said conveyor belt above said liquid stream, drive means to drive said conveyor belt with the upstream part of the belt travelling upwardly, in which the conveyor belt comprises a plurality of longitudinal spaced perforated plates, at least one lifter brush extending across said conveyor belt to lift solids from the stream, and to allow the solids to be discharged from the conveyor belt at a discharge region, and a cleaner brush located adjacent to the discharge region to remove solids remaining on the conveyor belt.
  2. 2. A filter apparatus as claimed in Claim 1 in which said lifter brush comprises transversely spaced sets of bristles extending upstream of the conveyor belt.
  3. 3. A filter apparatus claimed in Claim 1 or Claim 2 comprising a plurality of lifter brushes longitudinally spaced along the conveyor belt.
  4. 4. A filter apparatus as claimed in any preceding claim including a cleaner brush comprising a set of bristles arranged to interact with the bristles of the lifting brush to remove solids therefrom.
  5. 5. A filter apparatus as claimed in Claim 4 in which the cleaner brush comprises a plurality of said sets of bristles.
  6. 6. A filter apparatus as claimed in any preceding claim further comprising additional lifting means extending across the conveyor belt to lift solids too heavy to be supported by a lifter brush.
  7. 7. A filter apparatus as claimed in claim 6 in which the additional lifting means comprising a set of transversely spaced elongate members extending upstream from the conveyor belt.
  8. 8. A filter apparatus as claimed in Claim 7 in which the additional lifting means comprises a plurality of said sets of elongate members longitudinally spaced along the conveyor belt.
  9. 9. A filter apparatus substantially as herein described and shown in the accompanying drawings.
GB0030023A 2000-12-08 2000-12-08 A Filter Apparatus Expired - Fee Related GB2369785B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0030023A GB2369785B (en) 2000-12-08 2000-12-08 A Filter Apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0030023A GB2369785B (en) 2000-12-08 2000-12-08 A Filter Apparatus

Publications (3)

Publication Number Publication Date
GB0030023D0 GB0030023D0 (en) 2001-01-24
GB2369785A true GB2369785A (en) 2002-06-12
GB2369785B GB2369785B (en) 2003-10-29

Family

ID=9904748

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0030023A Expired - Fee Related GB2369785B (en) 2000-12-08 2000-12-08 A Filter Apparatus

Country Status (1)

Country Link
GB (1) GB2369785B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2421200B (en) * 2004-12-20 2009-10-07 Hans Huber Ag Masch & Anlagenb Device for removing and carrying off filtered deposits
CN104906857A (en) * 2015-06-19 2015-09-16 陈成义 Novel internal influx meshed plate grid sewage disposal machine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB238492A (en) * 1925-04-16 1925-08-20 Francis Whitwell Brackett Improvements in screening apparatus
GB1368464A (en) * 1971-02-02 1974-09-25 Hope W E Apparatus for the continuous separation of fine particles from liquor
JPS6079112A (en) * 1983-10-06 1985-05-04 Yanmar Diesel Engine Co Ltd Main shaft bearing lubricating device in internal- combustion engine
GB2275622A (en) * 1993-03-01 1994-09-07 Vickerys Ltd Screening apparatus
GB2350070A (en) * 1999-05-20 2000-11-22 Longwood Engineering Co Ltd Screening belt

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0679112A (en) * 1991-08-07 1994-03-22 Heriosu:Kk Sludge treating equipment fitted with rotating brush

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB238492A (en) * 1925-04-16 1925-08-20 Francis Whitwell Brackett Improvements in screening apparatus
GB1368464A (en) * 1971-02-02 1974-09-25 Hope W E Apparatus for the continuous separation of fine particles from liquor
JPS6079112A (en) * 1983-10-06 1985-05-04 Yanmar Diesel Engine Co Ltd Main shaft bearing lubricating device in internal- combustion engine
GB2275622A (en) * 1993-03-01 1994-09-07 Vickerys Ltd Screening apparatus
GB2350070A (en) * 1999-05-20 2000-11-22 Longwood Engineering Co Ltd Screening belt

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2421200B (en) * 2004-12-20 2009-10-07 Hans Huber Ag Masch & Anlagenb Device for removing and carrying off filtered deposits
CN104906857A (en) * 2015-06-19 2015-09-16 陈成义 Novel internal influx meshed plate grid sewage disposal machine
CN104906857B (en) * 2015-06-19 2016-09-28 深圳市凯宏膜环保科技有限公司 Influent stream web plate grid sewage-removing machine in a kind of

Also Published As

Publication number Publication date
GB2369785B (en) 2003-10-29
GB0030023D0 (en) 2001-01-24

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20051208