GB1357902A - Liquid straining apparatus - Google Patents

Liquid straining apparatus

Info

Publication number
GB1357902A
GB1357902A GB1077371*[A GB1077371A GB1357902A GB 1357902 A GB1357902 A GB 1357902A GB 1077371 A GB1077371 A GB 1077371A GB 1357902 A GB1357902 A GB 1357902A
Authority
GB
United Kingdom
Prior art keywords
screen
difference
motor
liquid
electrodes
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
GB1077371*[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.)
Glenfield and Kennedy Ltd
Original Assignee
Glenfield and Kennedy 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 Glenfield and Kennedy Ltd filed Critical Glenfield and Kennedy Ltd
Priority to GB1077371*[A priority Critical patent/GB1357902A/en
Priority to IT89604/72A priority patent/IT960342B/en
Priority to DE2219655A priority patent/DE2219655A1/en
Priority to IE540/72A priority patent/IE36321B1/en
Publication of GB1357902A publication Critical patent/GB1357902A/en
Expired legal-status Critical Current

Links

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
    • B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
    • B01D33/073—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for inward flow filtration
    • 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
    • B01D33/80—Accessories
    • B01D33/801—Driving means, shaft packing systems or the like
    • 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
    • B01D33/80—Accessories
    • B01D33/804—Accessories integrally combined with devices for controlling the filtration
    • B01D33/807—Accessories integrally combined with devices for controlling the filtration by level measuring
    • 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
    • B01D33/80—Accessories
    • B01D33/804—Accessories integrally combined with devices for controlling the filtration
    • B01D33/808—Accessories integrally combined with devices for controlling the filtration by pressure measuring

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Filtration Of Liquid (AREA)

Abstract

1357902 Liquid straining apparatus GLENFIELD & KENNEDY Ltd 21 April 1972 [22 April 1971] 10773/71 Heading B1D [Also in Division G3] A filter apparatus comprising a continuously moving screen, e.g. in the form of a rotary drum, disc or a moving band, includes means for cleaning the screen, driving means to move the screen so that each portion of the screen is first brought into a liquid filtering position and then into a cleaning position, and manometer means which is coupled to the driving means to control the rate of movement of the screen in response to the -difference in hydrostatic head across the screen. Fig. 1 shows a rotary drum 1 driven by motor-3 the periphery of which is formed of screens, cleaning means 2 and a pair of capacitance electrodes 4 and 5 forming the manometer means, these electrodes being situated either side of a wall 7 separating liquid to be strained from liquid already strained. The electrodes which dip into the liquid are connected to a comparator 8 (Fig. 2) which generates a difference signal which depends on the pressure difference between the electrodes. This difference signal is passed to a process controller 9 which compares the difference signal with a control signal which it itself produces and which corresponds with the desired pressure difference across the screen, The controller then generates an output signal dependant on the difference between the control signal and difference signal and this is fed to servo-motor 10 controlling the operation of variable speed motor 3. A feed-back connection is provided from the motor 3 to the servo-motor 10 to stop the servo-motor when the speed of the straining screen attains a value maintaining the required pressure difference. A remote control unit 11 containing an amplifier 12 conected to the output of comparator 8 provides a difference head indicator 13 and an audible alarm unit 14.
GB1077371*[A 1971-04-22 1971-04-22 Liquid straining apparatus Expired GB1357902A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB1077371*[A GB1357902A (en) 1971-04-22 1971-04-22 Liquid straining apparatus
IT89604/72A IT960342B (en) 1971-04-22 1972-04-21 IMPROVEMENT IN DEVICES FOR FILTERING AND PURIFYING LIQUIDS
DE2219655A DE2219655A1 (en) 1971-04-22 1972-04-21 LIQUID FILTER UNIT
IE540/72A IE36321B1 (en) 1971-04-22 1972-04-24 Improvements in or relating to liquid straining apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1077371*[A GB1357902A (en) 1971-04-22 1971-04-22 Liquid straining apparatus

Publications (1)

Publication Number Publication Date
GB1357902A true GB1357902A (en) 1974-06-26

Family

ID=9974008

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1077371*[A Expired GB1357902A (en) 1971-04-22 1971-04-22 Liquid straining apparatus

Country Status (4)

Country Link
DE (1) DE2219655A1 (en)
GB (1) GB1357902A (en)
IE (1) IE36321B1 (en)
IT (1) IT960342B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2303563A (en) * 1995-07-27 1997-02-26 Leonard Harris Self-cleaning liquid screening apparatus with level sensor
CN111282336A (en) * 2020-02-26 2020-06-16 中广核研究院有限公司 Control method and system for drum-shaped filter screen in circulating water filtering system of nuclear power station

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3715022C2 (en) * 1987-05-06 1997-08-21 Geiger Maschf Helmut Separation device for the continuous separation of solid components from a solid-liquid mixture
AU9487998A (en) * 1997-09-19 1999-04-12 Baker Hughes Incorporated Method and apparatus for monitoring, controlling and operating rotary drum filters

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2303563A (en) * 1995-07-27 1997-02-26 Leonard Harris Self-cleaning liquid screening apparatus with level sensor
GB2303563B (en) * 1995-07-27 1999-04-07 Leonard Harris Screening apparatus
CN111282336A (en) * 2020-02-26 2020-06-16 中广核研究院有限公司 Control method and system for drum-shaped filter screen in circulating water filtering system of nuclear power station
CN111282336B (en) * 2020-02-26 2022-01-11 中广核研究院有限公司 Control method and system for drum-shaped filter screen in circulating water filtering system of nuclear power station

Also Published As

Publication number Publication date
IE36321B1 (en) 1976-10-13
IE36321L (en) 1972-10-22
IT960342B (en) 1973-11-20
DE2219655A1 (en) 1973-03-15

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Legal Events

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