GB2382036A - A filtration system - Google Patents

A filtration system Download PDF

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Publication number
GB2382036A
GB2382036A GB0127816A GB0127816A GB2382036A GB 2382036 A GB2382036 A GB 2382036A GB 0127816 A GB0127816 A GB 0127816A GB 0127816 A GB0127816 A GB 0127816A GB 2382036 A GB2382036 A GB 2382036A
Authority
GB
United Kingdom
Prior art keywords
outlet
water
filtration system
mesh
foreign matter
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Withdrawn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
GB0127816A
Other versions
GB0127816D0 (en
Inventor
Nicholas Jackson
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
Priority to GB0127816A priority Critical patent/GB2382036A/en
Priority to US10/466,533 priority patent/US7294257B2/en
Priority to US10/466,799 priority patent/US20040112846A1/en
Priority to CA002434358A priority patent/CA2434358A1/en
Priority to EP01273309A priority patent/EP1361913A1/en
Priority to IL15683301A priority patent/IL156833A0/en
Priority to PCT/GB2001/005533 priority patent/WO2002056995A1/en
Priority to EP01273310A priority patent/EP1363717A1/en
Priority to CNA01822086XA priority patent/CN1486210A/en
Priority to JP2002557499A priority patent/JP2004523345A/en
Priority to PCT/GB2001/005549 priority patent/WO2002056996A1/en
Priority to TW090132849A priority patent/TWI239258B/en
Priority to TW090132854A priority patent/TW592781B/en
Publication of GB0127816D0 publication Critical patent/GB0127816D0/en
Publication of GB2382036A publication Critical patent/GB2382036A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B01D29/11—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 bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/114—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 bag, cage, hose, tube, sleeve or like filtering elements arranged for inward flow filtration
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
    • A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
    • A01K63/045—Filters for aquaria
    • 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
    • B01D29/56—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 series connection
    • B01D29/58—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 series connection arranged concentrically or coaxially
    • 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
    • B01D29/682—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles with a rotary movement with respect to the filtering element
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/008—Control or steering systems not provided for elsewhere in subclass C02F
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/30—Treatment of water, waste water, or sewage by irradiation
    • C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/40—Liquid flow rate
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/42—Liquid level
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Environmental Sciences (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Animal Husbandry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Filtration Of Liquid (AREA)

Abstract

The present invention relates to a filtration system 10 for filtering particulates and other foreign matter from a water supply. The system comprises a tank 12 with an inlet 14 and an outlet 18, a filtration unit 16 through which water must pass to reach the outlet and a sump 20 in which particulates and other foreign matter from the water accumulates. The sump has an outlet 22, a drainage conduit 24 communicating with the outlet, a pump 36 for withdrawing water and accumulated particulates and other foreign matter through the outlet and discharging it to a drainage conduit. A programmable controller 38 is provided for operating a valve 34 and pump. Advantageously the filtration unit 16 has a pair of circular covers 26, with a mesh wall between defining a filtration chamber 30 which communicates with the tank outlet 18. Preferably a rotatable arm is provided in the chamber 30 and is formed with at least one nozzle arranged to traverse and hence clean the wall of the mesh 28 as the arm rotates.

Description

<Desc/Clms Page number 1>
FILTRATION SYSTEM The present invention relates to a filtration system for removing particulates and other foreign matter from a water supply, and which includes an automated discharge system for removing such particulates and foreign matter.
The system is specifically intended for use with a filtration unit of the type described in UK Patent Application No. 0116008.4. As described in that document, the filtration unit is located in a tank and in use debris is dislodged from the upstream side of a filter and collects in a sump beneath, from which it must regularly be removed in order to maintain the efficiency of the filtration system. In some applications, particularly when the filtration system is first applied to a water supply which is particularly laden with debris, removal of the accumulated debris may need to be carried out at very frequent intervals.
Accordingly, the present invention provides a filtration system for filtering particulates and other foreign matter from a water supply, comprising a tank having an inlet and an outlet, a filtration unit located in the tank through which water must pass in order to reach the outlet, a sump in which particulates and other foreign matter removed from the water accumulates, the sump having an outlet, a drainage conduit communicating with the outlet, a pump for withdrawing water and accumulated particulates and other foreign matter from the sump and discharging it to the drainage conduit, and a programmable controller for operating the pump.
The controller can thus be programmed to activate
<Desc/Clms Page number 2>
the pump at desired intervals to ensure that discharge of debris from the tank occurs with sufficient frequency.
The outlet of the sump may be provided with a valve.
The valve may consist of a gate valve or a ball valve.
The controller may include a timer of the type used in conventional domestic central heating systems.
Preferably, the drainage conduit has an outlet or vent to atmosphere which is at a higher level than the inlet to the tank. This ensures that in the event of any failure of the pump, the head of water in the drainage channel is greater than the head of water in the tank and thus the tank will not simply drain away.
The filtration unit preferably comprises a filtering chamber, at least a portion of an exterior of the filtering chamber being provided with a mesh through which water may enter the filtering chamber in use, the mesh being sized to filter particulates and other foreign matter from the water, the filter unit further comprising an outlet through which filtered water exits the filter unit, and a rotatable member located within the filtering chamber, the rotatable member having at least one outlet spaced from an internal face of a mesh, the axis of rotation of the rotatable member being such that the at least one outlet traverses at least a substantial portion of the internal face of a mesh, the filter unit further comprising a dedicated pump having an inlet communicating with the filtering chamber and an outlet communicating solely with the rotatable member such
<Desc/Clms Page number 3>
that operation of the pump causes filtered water from within the filtering chamber to be pumped through the rotatable member to exit the at least one outlet and iminge on the internal face of the mesh so as to cause particulates and other foreign matter located on an external face of the mesh to be dislodged.
The invention will now be described in detail, by way of example only, with reference to the accompanying drawing which is a schematic elevation of a filtration system in accordance with one embodiment of the present invention.
The filtration system 10 comprises a tank 12.
The tank has an inlet 14 and an outlet 18. A filtration unit 16 is located in the tank. Water entering the tank must pass through the filtration unit in order to leave the tank 12 through the outlet 18. A lower portion of the tank forms the sump 20 which tapers towards an outlet 22 and a drainage pipe 24.
As described in UK patent application no.
0116008.4, the filtration unit 16 comprises a pair of circular covers 26 with a cylindrical mesh wall 28 therebetween, defining a filtration chamber 30 which communicates with the outlet 18. A rotatable arm (not shown) is provided in the chamber 30 and is formed with one or more outlet nozzles arranged to traverse the interior wall of the mesh 28 as the arm rotates.
Some of the filtered water is recirculated from the outlet 18 and is supplied by a pump 32 to the arm to cause it to rotate. Water exiting the outlet nozzles impacts the interior surface of the mesh wall 28 to dislodge debris on its exterior surface, which then falls under gravity into the sump 20.
<Desc/Clms Page number 4>
A drainage pipe 24 is connected to the outlet 22 of the sump 20 and is arranged with an outlet or vent to atmosphere 40 at a level higher than the level of the inlet 14 into the tank 12. This ensures that the head of water in the drainage pipe 24 is greater than that in the tank 12. Thus, water entering the tank 12 does not simply drain away, cutting off supply to the outlet 18.
However, the outlet 22 from the sump 20 to the drainage pipe 24 may also be closed by a valve 34 of any suitable type such as a gate valve or ball valve.
A pump 36 is provided to pump water and accumulated debris whenever desired (and when the valve 34 is open, if provided) from the sump 20 and along the drainage pipe 24 to waste. The pump may be of any suitable type which is able to operate without fouling due to the debris which may be present in the water.
The valve 34 (if present) and pump 36 are operated by a programmable controller 38 which includes a time clock and which can be preset to activate the valve and pump at desired intervals and for a desired length of time. For example, a conventional domestic central heating timer can be used.
The controller can be set to operate the valve 34 and pump 36 as often as necessary and for as long as necessary. For example, when the system is newly installed and the water to be filtered is particularly laden with particulates and other foreign matter, it may be necessary to clear the accumulated debris every two hours or so, operating the pump for, say, ten minutes each time. Once this initial filtration has
<Desc/Clms Page number 5>
occurred, ongoing filtration may require a lower frequency of perhaps twice a day.
It will be apparent that a number of modifications may be made without departing from the scope of the invention. For example, a different type of filtration unit may be used. A filtration system comprising a number of tanks and filtration units through which water passes consecutively may be employed, with each tank including a sump and automated discharge system in accordance with the invention.

Claims (8)

  1. CLAIMS 1. A filtration system for filtering particulates and other foreign matter from a water supply, comprising a tank with an inlet and an outlet, a filtration unit through which water must pass to reach the outlet, and a sump in which particulates and other foreign matter from the water accumulates, the sump having an outlet, a drainage conduit communicating with the outlet, a pump for withdrawing water and accumulated particulates and other foreign matter through the outlet and discharging it to a drainage conduit, and a programmable controller for operating a valve and pump.
  2. 2. A filtration system as claimed in claim 1, wherein the outlet from the sump is provided with a valve.
  3. 3. A filtration system as claimed in claim 2, wherein the valve is a gate valve.
  4. 4. A filtration system as claimed in claim 2, wherein the valve is a ball valve.
  5. 5. A filtration system as claimed in any preceding claim, wherein the controller includes a timer of the type used in central heating systems.
  6. 6. A filtration system as claimed in any preceding claim, wherein the drainage channel has an outlet or vent to atmosphere at a higher level than the inlet of the tank.
  7. 7. A filtration system as claimed in any preceding claim, wherein the filtration unit comprises a filtering chamber, at least a portion of an exterior
    <Desc/Clms Page number 7>
    of the filtering chamber being provided with a mesh through which water may enter the filtering chamber in use, the mesh being sized to filter particulates and other foreign matter from the water, the filter unit further comprising an outlet through which filtered water exits the filter unit, and a rotatable member located within the filtering chamber, the rotatable member having at least one outlet spaced from an internal face of a mesh, the axis of rotation of the rotatable member being such that the at least one outlet traverses at least a substantial portion of the internal face of a mesh, the filter unit further comprising a dedicated pump having an inlet communicating with the filtering chamber and an outlet communicating solely with the rotatable member such that operation of the pump causes filtered water from within the filtering chamber to be pumped through the rotatable member to exit the at least one outlet and impinge on the internal face of the mesh so as to cause particulates and other foreign matter located on an external face of the mesh to be dislodged.
  8. 8. A filtration system substantially as hereinbefore described with reference to the accompanying drawings.
GB0127816A 2001-01-18 2001-11-20 A filtration system Withdrawn GB2382036A (en)

Priority Applications (13)

Application Number Priority Date Filing Date Title
GB0127816A GB2382036A (en) 2001-11-20 2001-11-20 A filtration system
US10/466,533 US7294257B2 (en) 2001-01-18 2001-12-14 Water filter
US10/466,799 US20040112846A1 (en) 2001-01-18 2001-12-14 Filter
CA002434358A CA2434358A1 (en) 2001-01-18 2001-12-14 Water filter
EP01273309A EP1361913A1 (en) 2001-01-18 2001-12-14 Water filter
IL15683301A IL156833A0 (en) 2001-01-18 2001-12-14 Water filter
PCT/GB2001/005533 WO2002056995A1 (en) 2001-01-18 2001-12-14 Water filter
EP01273310A EP1363717A1 (en) 2001-01-18 2001-12-14 Filter
CNA01822086XA CN1486210A (en) 2001-01-18 2001-12-14 Water filter
JP2002557499A JP2004523345A (en) 2001-01-18 2001-12-14 Water filter
PCT/GB2001/005549 WO2002056996A1 (en) 2001-01-18 2001-12-14 Filter
TW090132849A TWI239258B (en) 2001-01-18 2001-12-28 Filter
TW090132854A TW592781B (en) 2001-01-18 2001-12-28 Water filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0127816A GB2382036A (en) 2001-11-20 2001-11-20 A filtration system

Publications (2)

Publication Number Publication Date
GB0127816D0 GB0127816D0 (en) 2002-01-09
GB2382036A true GB2382036A (en) 2003-05-21

Family

ID=9926124

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0127816A Withdrawn GB2382036A (en) 2001-01-18 2001-11-20 A filtration system

Country Status (1)

Country Link
GB (1) GB2382036A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3744633A (en) * 1971-01-18 1973-07-10 Industrial Filter Pump Mfg Co Filter apparatus and method of filtration
EP0460842A1 (en) * 1990-06-06 1991-12-11 Filtration Limited Self-cleaning filter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3744633A (en) * 1971-01-18 1973-07-10 Industrial Filter Pump Mfg Co Filter apparatus and method of filtration
EP0460842A1 (en) * 1990-06-06 1991-12-11 Filtration Limited Self-cleaning filter

Also Published As

Publication number Publication date
GB0127816D0 (en) 2002-01-09

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)