GB1195795A - Method of and Apparatus for Filtering - Google Patents

Method of and Apparatus for Filtering

Info

Publication number
GB1195795A
GB1195795A GB33936/68A GB3393668A GB1195795A GB 1195795 A GB1195795 A GB 1195795A GB 33936/68 A GB33936/68 A GB 33936/68A GB 3393668 A GB3393668 A GB 3393668A GB 1195795 A GB1195795 A GB 1195795A
Authority
GB
United Kingdom
Prior art keywords
liquid
tank
filter
bed
screen
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
GB33936/68A
Inventor
Gene Hirs
Richard H Wykoff
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.)
Hydromation Engineering Co
Original Assignee
Hydromation Engineering Co
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 Hydromation Engineering Co filed Critical Hydromation Engineering Co
Priority to GB33936/68A priority Critical patent/GB1195795A/en
Priority to DE19681761897 priority patent/DE1761897C3/en
Priority claimed from DE19681761897 external-priority patent/DE1761897C3/en
Priority to BE719095D priority patent/BE719095A/en
Priority to FR162346A priority patent/FR1575431A/fr
Priority to US808868A priority patent/US3550774A/en
Priority to DE2005179A priority patent/DE2005179C3/en
Priority to AT218170A priority patent/AT306058B/en
Publication of GB1195795A publication Critical patent/GB1195795A/en
Expired 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
    • B01D29/13—Supported filter elements
    • B01D29/15—Supported filter elements arranged for inward flow filtration
    • 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
    • B01D24/04—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 clamped between pervious fixed walls
    • B01D24/045—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 clamped between pervious fixed walls with at least one flat vertical wall
    • B01D24/047—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 clamped between pervious fixed walls with at least one flat vertical wall with vertical tubes distributing the liquid to be filtered or for collecting filtrate
    • 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
    • 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
    • B01D29/44—Edge filtering elements, i.e. using contiguous impervious surfaces
    • B01D29/48—Edge filtering elements, i.e. using contiguous impervious surfaces of spirally or helically wound bodies
    • 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
    • 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
    • B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D37/00—Processes of filtration
    • B01D37/02—Precoating the filter medium; Addition of filter aids to the liquid being filtered
    • 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
    • B01D24/14—Downward filtration, the container having distribution or collection headers or pervious conduits

Abstract

1,195,795. Liquid filtering. HYDROMATION ENG. CO. 17 July, '1968, No. 33936/68. Heading B1D. A filter bed of granular plastics or wood saw dust, through which liquid normally flows from inlet pipes 84 to outlet pipes 87, is .periodically cleaned by fluidising the bed with additional clean or unfiltered liquid and forcing the resulting slurry to flow 'round a circuit including a wedgewire screen 81, through which liquid and filtered solids are withdrawn but which retains the filter medium. In Fig. 8, the screen 81 is in the filter tank 80, and pump ,103 delivers liquid to injection pump 97 to circulate the slurry. In Figs. 1 to 7, not shown, the screen (54) is located outside .the filter tank, and is of cylindrical shape and wedgwire construction, flow being inwards or outwards (Figs. 7, 5). Centrifugal pump (47) forces the .slurry round circuit (45, 46, 47, 50 55, 41) while pump (30), which normally delivers unfiltered liquid from tank (33), delivers filtered liquid from tank (37) to make up for liquid leaving the screen through outlet (58). This liquid is separated from the filtered solids by settling in tank (59). Outlet pipes (23), 87 are of helically wound wedgewire construction and closed at the tops, while inlet .pipes (16), 84 are perforated along one side (Fig. 4) and open at the top. At the beginning of a filtration cycle, the filter .tank (11), 80 fills with liquid and flow is downwards through the bed, later the flow is radial. The bed may be polyvinyl chloride .particles with pock marked surfaces, grown in an emulsion, spherical particles of foamed polystyrene, shredded polyethylene, polypropylene or .sawdust.
GB33936/68A 1968-01-09 1968-07-17 Method of and Apparatus for Filtering Expired GB1195795A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
GB33936/68A GB1195795A (en) 1968-07-17 1968-07-17 Method of and Apparatus for Filtering
DE19681761897 DE1761897C3 (en) 1968-07-19 Method and device for regenerating filter material
BE719095D BE719095A (en) 1968-07-17 1968-08-06 METHOD AND APPARATUS FOR FILTRATION
FR162346A FR1575431A (en) 1968-07-17 1968-08-08
US808868A US3550774A (en) 1968-01-09 1969-03-20 Method of and apparatus for filtering
DE2005179A DE2005179C3 (en) 1968-07-17 1970-02-05 Method and device for regenerating filter material
AT218170A AT306058B (en) 1968-07-17 1970-03-09 Process for the regeneration of a filter bed consisting of a granular filter medium

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GB33936/68A GB1195795A (en) 1968-07-17 1968-07-17 Method of and Apparatus for Filtering
DE19681761897 DE1761897C3 (en) 1968-07-19 Method and device for regenerating filter material
BE719095 1968-08-06
FR162346 1968-08-08
US80886869A 1969-03-20 1969-03-20

Publications (1)

Publication Number Publication Date
GB1195795A true GB1195795A (en) 1970-06-24

Family

ID=27507698

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33936/68A Expired GB1195795A (en) 1968-01-09 1968-07-17 Method of and Apparatus for Filtering

Country Status (5)

Country Link
AT (1) AT306058B (en)
BE (1) BE719095A (en)
DE (1) DE2005179C3 (en)
FR (1) FR1575431A (en)
GB (1) GB1195795A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115090018A (en) * 2022-06-30 2022-09-23 重庆海浦洛自动化科技有限公司 Backwashing filtering method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2233790C3 (en) * 1972-07-10 1982-04-08 Heinz 5600 Wuppertal Henke Process for backwashing a Riesler filter combination
DE8717728U1 (en) * 1986-12-22 1989-11-16 Stricker, Max, Zezikon, Ch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115090018A (en) * 2022-06-30 2022-09-23 重庆海浦洛自动化科技有限公司 Backwashing filtering method

Also Published As

Publication number Publication date
AT306058B (en) 1973-03-26
DE2005179B2 (en) 1977-08-18
DE2005179A1 (en) 1970-11-05
DE1761897B2 (en) 1976-05-26
BE719095A (en) 1969-01-16
DE2005179C3 (en) 1978-04-20
FR1575431A (en) 1969-07-18
DE1761897A1 (en) 1970-11-12

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLE Entries relating assignments, transmissions, licences in the register of patents
PCNP Patent ceased through non-payment of renewal fee