GB2375972A - Filter with automatic backwashing - Google Patents

Filter with automatic backwashing Download PDF

Info

Publication number
GB2375972A
GB2375972A GB0113610A GB0113610A GB2375972A GB 2375972 A GB2375972 A GB 2375972A GB 0113610 A GB0113610 A GB 0113610A GB 0113610 A GB0113610 A GB 0113610A GB 2375972 A GB2375972 A GB 2375972A
Authority
GB
United Kingdom
Prior art keywords
filter
pump
automatic
tank
filtrate
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Withdrawn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
GB0113610A
Other versions
GB0113610D0 (en
Inventor
Brian Denis Waring
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 GB0113610A priority Critical patent/GB2375972A/en
Publication of GB0113610D0 publication Critical patent/GB0113610D0/en
Publication of GB2375972A publication Critical patent/GB2375972A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B01D35/05—Floating filters
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/20—Pressure-related systems for filters
    • B01D2201/204—Systems for applying vacuum to filters
    • B01D2201/206—Systems for applying vacuum to filters by the weight of the liquid in a tube, e.g. siphon, barometric leg

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Filtration Of Liquid (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

A filter 2 is automatically backwashed with filtrate (from tank 3) when it clogs. Pump 1 pumps raw water through filter 2 into washwater tank 3 and service line 4. When the filter clogs, the head of water in pipe 5 upstream of the filter 2 actuates a float switch 6 which stops the pump 1. The filtrate in washwater tank 3 then flows through the filter in the reverse direction. After a time set by timer 7, the backwashing operation stops and filtering begins again. Fig 1b has a delivery valve (11), and an exhaust valve (9) leading to a sump (10) for the backwashed liquid. In Fig 2, clogging is sensed by a differential pressure gauge (15) connected across the filter 2 and the washwater tank (12) has an air release and air inlet valve (17). In Fig 1a there are 2 pumps, one for filtering, and one (4) for backwashing.

Description

<Desc/Clms Page number 1>
AUTOMATIC NO VALVE FILTER.
THIS INVENTION RELATES TO A NO VALVE FILTER. AUTOMATIC.
FILTERS ARE WELL KNOWN FOR BEING OPERATED FOR FUNCTIONS SUCH AS BACKWASHING OF THE FILTERING MEDIUM BY VALVES WHICH OPEN, CLOSE AND REVERSE FLOW.
ACCORDING TO THE PRESENT INVENTION THERE IS PROVIDED A AUTOMATIC NO VALVE FILTER COMPRISING A PUMP TO PUMP UNFILTERED WATER THROUGH.
THE FILTER THEN THROUGH THE WASHWATER TANKAGE OUT THROUGH THE PIPE AT THE TOP.
A SEPARATE VERTICAL LEG IS PROVIDED ON THE PUMP DELIVERY WHICH READS THE HEAD IN THE SYSTEM. AT A GIVEN HIGH HEAD A FLOAT SWITCH STOPS THE PUMP. FLOW REVERSES IN THE SYSTEM WHICH AUTOMATICALLY BACKWASHES THE FILTER.
A SIMPLE TIMER HOLDS THE CURRENT TO THE PUMP OFF FOR SAY 20MINUTES.
WHEN THE PUMP COMES CN THE SYSTEM IS BAC K INTO FILTERING MODE AUTOMATICALLY.. NO VALVES JSED.
A SPECIFIC EMBODIMENT OF THE INVENTION WILL NOW BE DESCRIBED BY WAY OF EXAMPLE WITH REFERENCE TO THE ACCOMPANYING DRAWING IN WHICH :FIGURE 1 SHOWS IN SECTIONAL ELEVATION THE NO VALVE FILTER.
REFERING TO THE DRAWING THE NO VALVE FILTER COMPRISES A PUMP 1 AND A FILTER 2 WITH A WASHWATER STORAGE TANK 3 WHICH HAS AN OUTLET PIPE-.
IN ORDER TO CONTROL THE SYSTEM AND MAKE IT AUTOMATIC THERE IS PROVIDED A SEPARATE VERTICAL LEG 5 ON THE PUMP DELIVERY LINE TO A HIGH LEVEL FLOAT SWITCH 6 WHICH VIA A TIMER 7 STOPS THE ELECTRICITY SUPPLY TO STOP THE PUMP.
THE STATIC HEAD IN THE WASHWATER'TANK 3 BACKWASHES THE FILTER THROUGH THE PUMP CASING, PAST THE IMPELLOR.
THE TIMER 7 DELAYS FOR SAY 20 MINUTES. WHEN THE CURRENT COMES BACK ON THE PUMP 1 STARTS AND THE SYSTEM STARTS AUTOMATICALLY.
AN OPTIONAL INTEGRAL COMPONENT OF THE SYSTEM COULD BE A SUSPENDED SOLIDS SEPARATOR WHICH COULD BE A PLATE TYPE SEPARATOR WHICH WOULD BE CLEANED BY THE BACKWASH WATER OUT OF THE FILTER.
<Desc/Clms Page number 2>
TWO PUMP AUTOMATIC FILTER 11 1 THIS INVENTION RELATES TO A TWO PUMP AUTOMATIC FI LTER WHICH HAS NO STOP VALVES.
FILTER-, ARE 1,. IET T T----FILTERS ARE WELL KNOWN FOR BEING OPERATED FOR FUNCTIONS SUCH AS BACKWASHING OF THE FILTERING MEDIUM BY VALVES WHICH OPEN, CLOSE AND REVERSE FLOW.
ACCORDING TO THE RRESENT INVENTION THERE IS PROV IDED A AUTOMATIC, TWO PUMP, NO VALVE FILTER COMPRISING A PUMP TO PUMP UNFILTERED WATER THROUGH THE FILTER INTO A WASHWATER STORAGE TANK AND A WASHWATER PUMP WHICH TURNS ON/OFF ALTERNATES WITH THE RAW WATER PUMP DRAWING FILTERED WATER FROM THE FILTERED WATER STORAGE TANK.
A SPECIFIC EMBODIMENT OF THE INVENTION WILL NOW B E DESCRIBED
BY WAY OF EXAMPLE WITH REFERENCE TO THE ACCOMPANYING DRAWINGS IN WHICH :- FIGICL SHOWS IN SECTIONAL ELEVATION THE TWO PUM P AUTOMATIC FILTER WITH NO STOP VALVES.
REFERING TO THE DRAWING THE TWO PUMP FILTER COMPRI SES A RAW WATER (SUBMERSIBLE) PUMP 1 A FILTER 2 AND A WASHWAT ER STORAGE TANK 3 WITH AN OUTLET 6. THE FILTER HAS A CONNECT ION TOO A PRESSURE GAUGE 7 OR HEAD LOSS LEVEL SENCING DEVICE. WHEN THE LEVEL IS REACHED THE PUMP 1 IS STOPPED AND PUMP 4 BACKWASHES THE FILTER. UPON COMPLETION THE PUMPS ARE ALTERNATED ON/OFF/ON ANDFILTRATION AUTOMATIC ALLY COMMENCES.
<Desc/Clms Page number 3>
AUTO M ATIC FILTER 106. TWO VALVE. AUTO FILTER 107 THIS INVENTION RELATES TO AN AUTOMATIC FILTER.. TWO VALVE FILTERS ARE WELL KNOWN FOR BEING BACKWASHED MANUALLY. THIS IS CARRIED OUT BY OPENING AND CLOSING VALVES MANUALLY.
ACCORDING TO THE PRESENT INVENTION THERE IS PROVIDED AN AUTOMATIC FILTER WITH ITS OWN WASHWATER TANK AND TWO VALVES..
ONE ON THE PUMP DELIVERY AND ONE ON THE WASHOUT.
A SPECIFIC EMBODIMENT OF THE INVENTION WILL NOW BE DESCRIBED BY WAY OF EXAMPLE WITH REFERENCE TO THE ACCOMPANYING DRAWING
IN WHICH :- FIGUREib. SHOWS A DIAGRAM OF AN AUTOMATIC FILTER WITHHTWO VALVES.
REFERING TO THE DRAWING THE AUTOMATIC FILTER COMPRISES A PUMP 1 'WATER FILTER X2 FLOWING INTO A WASHWATER TANK 3 WITH A HIGH LEVEL OUTLET PIPE 4.
IN ORDER TO AUTOMATICALLY BACKWASH THE FILTER 2 THE HEAD IN THE SYSTEM IS TRANSMITTED UP PIPE 5. WHEN THE FLOAT VALVE 6 TURNS OFF THE CURRENT TO STOP THE PUMP VIA. TIMER 7 THE PUMP DELIVERY VALVE 11 IS CLOSED AND THE WASHOUT VALVE 9 IS OPENED. WASH WATER DISCHARGING INTO SUMP 10.
AT COMPLETION OF AUTOMATIC BACKWASHING THE TIMER ALLOWS REVERSE OF THE CYCLE, THE PUMP STARTS, FILTRATE FILLS THE WASHWAT ER TAN WT TS
FLO'/TO SERVIC E.
FIGuRE 2. SHOWS A DIAGRAM OF AN AUTOMATIC FILTER WITH TWO VALVES.
IT REFERING TO THE DRAWING THE AUTO FILTER COMPRISES FILTER 2 PRESSURISED '.'SH'.-TER TANK"2 WITH FILTRATE VI''NON RETURN VALVE 16 INTO HEADER13.
DIFFERENCIAL GUGE 5, WATER DRAWN FROM HEADER 14.AT DIFFERENCIAL ACTUATION VALVE 19 IS CLOSED, VALVEE WASHOUT 18 IS OPENED. VALVE"7 OPENED.
AUTO BA@KWASHING TAKES PLACE AFTER WHICH THE TIMER STARTS THE CYCLE INTO REVERSE AND FILTRATION RE COMMENCES WHERE THE FILTRATE FILLS THE WSH'ATER TANK BEFORE FILTRATE GOES INTO THE SERVICE HEADER.
<Desc/Clms Page number 4>
C L A I M S 1. A NO VALVE FILTER COMPRISING A PUMP AND A PRESSURE FILTER WHERE THE FILTERED WATER PASSES INTO A WASHWATER STORAGE TANK OUT THROUGH A HIGH LEVEL PIPE THE SYSTEM HAS A CONNECTION ON THE PUMP DELIVERY TO A FLOAT SWITCH WHICH STOPS THE PUMP AT THE
T3 DESIGN LOSS OF HEAD THROUGH THE SYSTEM.
A TIMER STARTS THE PUHP AFTER A PERIOD OF SAY 20 MINUTES AFTER FLOW IN THE SYSTEM HAS REVERSED AND BACKWASHED THE FILTER.
2. A NO VALVE FILTER AS CLAIMED IN CLAIM 1 WHEREIN THE FILTER IS AN UPWARD FLOW FILTER.
3. A NO VALVE FILTER AS CLAIMED IN CLAIM 1 OR CLAIM 2 WHERECDN THERE IS PROVIDED ON THE INLET TO THE FILTER A SUSPENDED SOLIDS SEPARATOR. 8.
4. A NO VALVE FILTER AS CLAIMED IN CLAIM 1 OR CLAIM 2 OR CLAIM 3 WHEREIN THE FILTER IS FLOATING.

Claims (1)

  1. 5. A TWO PUMP AUTOMATIC FILTER WHICH HAS NO STOP VALVES WHERE PUMP No 1 PUMPS THE RAW WATER TROUGH THE FILTER.. AND WHEN No 1 PUMP IS STOPPED No h PUMP IS TURNED OFF AT WHICH TIME WASHOUT WATER WILL DISCHARGH OUT THROUGH THE
    RAW WATER PUMP No ! CASING. 6. A TWO PUMP AUTOMATIC FILTER AS CLAIMED IN CLAI M 5 WHEREIN THE FILTER IS FLOATING.
    <Desc/Clms Page number 6>
    C L A I M S.
    7. AN AUTOMATIC FILTER 106 WHICH HAS A WASHWATER TANK ON THE FILTRATE OUTLET WITH A PUMP WHICH PUMPS WATER THROUGH THE SYSTEM.
    THE AUTOMATION OF THE BACKWASH CYCLE IS INITIATED BY A HIGH LEVEL, DIFFERENCIAL SENCING FLOAT SWITCH WHICH THROUGH A TIMER STOPS THE PUMP CLOSES THE PUMP DELIVERY VALVE AND OPENS THE WASHOUT AT THIS AUTOMATIC BACK WASHING OF THE FILTER TAKES PLACE. UPON COMPLETION THE TIMER REVERSES THE CYCLE PUTTING THE SYSTEM INTO THE FILTERING MODE.
    8 AN AUTOMATIC FILTER 107 AS CLAIMEDXIN CLAI 7. WHEREIN THE SYSTEM IS UNDER PRESSURE WITH RAW WATER FROM A HEADER, FILTRATE INTO A PRESSURISED WASHWATER TANK WITH FILTRATE DISCHARGING INTO A COMMON HEADER WITH DIFFERENCIAL PRESSURE SENSED BY A DIFFERENCIAL PRESSURE GAUGE. THE SYSTEM HAVING @ AIR RELEASE AND AIR INLET VALVE ON THE WASH0BTER TANK.
GB0113610A 2001-06-02 2001-06-02 Filter with automatic backwashing Withdrawn GB2375972A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0113610A GB2375972A (en) 2001-06-02 2001-06-02 Filter with automatic backwashing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0113610A GB2375972A (en) 2001-06-02 2001-06-02 Filter with automatic backwashing

Publications (2)

Publication Number Publication Date
GB0113610D0 GB0113610D0 (en) 2001-07-25
GB2375972A true GB2375972A (en) 2002-12-04

Family

ID=9915916

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0113610A Withdrawn GB2375972A (en) 2001-06-02 2001-06-02 Filter with automatic backwashing

Country Status (1)

Country Link
GB (1) GB2375972A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6666976B2 (en) 1998-01-28 2003-12-23 James Benenson, Jr. Self cleaning water filter
US6821444B2 (en) 1998-01-28 2004-11-23 James Benenson, Jr. Self-cleaning fuel oil strainer
GB2377187B (en) * 2001-06-04 2005-06-08 Jr James Benenson Self-cleaning water filter

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109026671A (en) * 2018-09-17 2018-12-18 辽宁格瑞特泵业有限公司 Automatic desilting filter

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2067910A (en) * 1980-01-28 1981-08-05 Schneider Co Inc J R Backwashable filtering device
GB2159725A (en) * 1984-06-09 1985-12-11 Klimatank Holdings Limited Filter apparatus
GB2170420A (en) * 1985-02-06 1986-08-06 Fluid Treatment Pte Ltd Filtration apparatus
EP0688593A1 (en) * 1994-06-23 1995-12-27 Jack Moorehead Filter system for a liquid stream with automatic rapid back flush capability
GB2303563A (en) * 1995-07-27 1997-02-26 Leonard Harris Self-cleaning liquid screening apparatus with level sensor
GB2335150A (en) * 1998-03-12 1999-09-15 Richard Nicholas Barth Filter apparatus with reverse flushing

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2067910A (en) * 1980-01-28 1981-08-05 Schneider Co Inc J R Backwashable filtering device
GB2159725A (en) * 1984-06-09 1985-12-11 Klimatank Holdings Limited Filter apparatus
GB2170420A (en) * 1985-02-06 1986-08-06 Fluid Treatment Pte Ltd Filtration apparatus
EP0688593A1 (en) * 1994-06-23 1995-12-27 Jack Moorehead Filter system for a liquid stream with automatic rapid back flush capability
GB2303563A (en) * 1995-07-27 1997-02-26 Leonard Harris Self-cleaning liquid screening apparatus with level sensor
GB2335150A (en) * 1998-03-12 1999-09-15 Richard Nicholas Barth Filter apparatus with reverse flushing

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6666976B2 (en) 1998-01-28 2003-12-23 James Benenson, Jr. Self cleaning water filter
US6712981B2 (en) 1998-01-28 2004-03-30 James Benenson, Jr. Method of cleaning a cylindrical water strainer utilizing reverse flow and ultrasonic energy
US6821444B2 (en) 1998-01-28 2004-11-23 James Benenson, Jr. Self-cleaning fuel oil strainer
GB2377187B (en) * 2001-06-04 2005-06-08 Jr James Benenson Self-cleaning water filter

Also Published As

Publication number Publication date
GB0113610D0 (en) 2001-07-25

Similar Documents

Publication Publication Date Title
KR20180125023A (en) Household water purification system
CN112142214B (en) Water purifier and control method and device thereof
GB1112072A (en) A filter for liquid
CN204625351U (en) water purification system
GB2375972A (en) Filter with automatic backwashing
CN2769364Y (en) Automatic cleaning and separating quality combined water supply device
CN210528597U (en) Intelligent wastewater recycling water purifier
CN1394813A (en) Microcomputer monitored pipe type water-purifying machine
CN206886818U (en) The water quality water purifier of intelligent water-saving three
CN214360551U (en) Water purifier
CN215975082U (en) Water purifier
CN214653824U (en) Clean drinking machine capable of reducing TDS concentration of effluent
JP4313497B2 (en) Backwash water self-holding pressure filter
CN201124051Y (en) Automatic backwashing device
CN211799300U (en) Backwashing filter box for ornamental water
CN208785879U (en) A kind of intelligent filtering machine
CN209292101U (en) Water purifier water circuit system and water purifier
CN210163221U (en) Ecological environment-friendly wastewater-free water purifier
CN208632228U (en) A kind of micro- waste water energy conservation reverse osmosis water purifier of intelligent frequency-conversion
CN109289282A (en) A kind of automatic cleaning strainer
CN205241384U (en) Water purifying machine without waste water
CN218221393U (en) Microstrainer control system and microstrainer
CN2435384Y (en) Single-cylinder back-cleaning water purifier
KR100967353B1 (en) Filtering apparatus for simple water supply capable of automatic back wash and automatic back wash method
CN217947864U (en) Direct-drinking self-cleaning water purifier

Legal Events

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