GB1343075A - Method of and apparatsu for filtering liquids - Google Patents

Method of and apparatsu for filtering liquids

Info

Publication number
GB1343075A
GB1343075A GB1334771*[A GB1334771A GB1343075A GB 1343075 A GB1343075 A GB 1343075A GB 1334771 A GB1334771 A GB 1334771A GB 1343075 A GB1343075 A GB 1343075A
Authority
GB
United Kingdom
Prior art keywords
bed
chamber
line
valve
backwash
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.)
Expired
Application number
GB1334771*[A
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.)
Ecodyne Corp
Original Assignee
Ecodyne Corp
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 Ecodyne Corp filed Critical Ecodyne Corp
Publication of GB1343075A publication Critical patent/GB1343075A/en
Expired 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
    • B01D24/46—Regenerating the filtering material in the filter
    • B01D24/4631—Counter-current flushing, e.g. by air
    • B01D24/4636—Counter-current flushing, e.g. by air with backwash shoes; with nozzles
    • 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
    • B01D24/48—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof integrally combined with devices for controlling the filtration
    • B01D24/4869—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof integrally combined with devices for controlling the filtration by level measuring

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Biological Treatment Of Waste Water (AREA)

Abstract

1343075 Filter apparatus ECODYNE CORP 5 May 1971 [12 May 1970] 13347/71 Heading B1D A self-backwashing filter for liquids comprises a chamber 10 containing a particulate filter bed 20 and divided by the bed and by partition 16 into an inlet chamber 18, an outlet chamber 22 and a backwash storage chamber 14. Liquid to be filtered enters via line 30, head box 32, line 36 and line 38 and is delivered to service after a downward flow filtration via line 48 without passing it through any further portion of the filter apparatus and without raising it to the level of the backwash storage compartment having valve 50. The backwash chamber 14 is filled by closing valve 50 and opening valve 54 in line 52. The filter is periodically automatically backwashed when the pressure difference across the bed reaches a predetermined limit, as sensed by control pipe 55 and probe 57. The flow of liquid through the bed is ceased by opening by-pass valve 42 and the inlet chamber is drained via line 44 by opening valve 46. A reverse flow of air is then passed through the bed from blower 60 via line 62, followed by an upward flow of backwash liquid.
GB1334771*[A 1970-05-12 1971-05-05 Method of and apparatsu for filtering liquids Expired GB1343075A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US3656970A 1970-05-12 1970-05-12

Publications (1)

Publication Number Publication Date
GB1343075A true GB1343075A (en) 1974-01-10

Family

ID=21889329

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1334771*[A Expired GB1343075A (en) 1970-05-12 1971-05-05 Method of and apparatsu for filtering liquids

Country Status (2)

Country Link
BE (1) BE767003A (en)
GB (1) GB1343075A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5466462U (en) * 1977-10-19 1979-05-11
GB2152021A (en) * 1983-11-11 1985-07-31 Projekt Wasserwirtschaft Veb Biological treatment of effluent
GB2308987A (en) * 1996-01-11 1997-07-16 Kenneth Albert Stagg self cleaning liquid filter
CN113577865A (en) * 2020-12-03 2021-11-02 安徽华塑股份有限公司 Constant-flow filtering device for centrifugal mother liquor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5466462U (en) * 1977-10-19 1979-05-11
GB2152021A (en) * 1983-11-11 1985-07-31 Projekt Wasserwirtschaft Veb Biological treatment of effluent
GB2308987A (en) * 1996-01-11 1997-07-16 Kenneth Albert Stagg self cleaning liquid filter
CN113577865A (en) * 2020-12-03 2021-11-02 安徽华塑股份有限公司 Constant-flow filtering device for centrifugal mother liquor

Also Published As

Publication number Publication date
BE767003A (en) 1971-10-01

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees