GB721531A - Improvements in or relating to filtering apparatus - Google Patents

Improvements in or relating to filtering apparatus

Info

Publication number
GB721531A
GB721531A GB19388/50A GB1938850A GB721531A GB 721531 A GB721531 A GB 721531A GB 19388/50 A GB19388/50 A GB 19388/50A GB 1938850 A GB1938850 A GB 1938850A GB 721531 A GB721531 A GB 721531A
Authority
GB
United Kingdom
Prior art keywords
wash water
nozzle
sand
valve
pressure
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
GB19388/50A
Inventor
Frederick William Bramwell
Charles Balfour Bramwell
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.)
TURN OVER FILTER CO Ltd
Original Assignee
TURN OVER FILTER CO 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 TURN OVER FILTER CO Ltd filed Critical TURN OVER FILTER CO Ltd
Priority to GB19388/50A priority Critical patent/GB721531A/en
Publication of GB721531A publication Critical patent/GB721531A/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
    • B01D24/4668—Regenerating the filtering material in the filter by moving the filtering element
    • B01D24/4684—Regenerating the filtering material in the filter by moving the filtering element using spray devices
    • 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
    • B01D24/46—Regenerating the filtering material in the filter
    • B01D24/4631—Counter-current flushing, e.g. by air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2101/00—Types of filters having loose filtering material
    • B01D2101/04—Sand or gravel filters
    • 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
    • B01D24/4884—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 pressure measuring

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)

Abstract

721,531. Gravity sand filters. TURN-OVER FILTER CO., Ltd. July 27, 1951. [Aug. 3, 1950] No. 19388/50. Class 46. [Also in Group XXIX] Filtering apparatus of the type in which the sand is washed by ejection from the bed through tubes by jets of water 'issuing from nozzles, the sand being carried up the tubes in a state of turmoil and then settling back on the bed incorporates at least one nozzle comprising pressure-actuable valve means in the nozzle adapted to be opened by the pressure of the wash water to allow issue of the jet, and to close automatically to prevent ingress of sand as soon as the pressure of the wash water falls below a predetermined amount, as for example when it is turned off. Wash water entering a nozzle casing 1 at 3, Fig. 1, depresses an annular flexible diaphragm 5 which in turn causes a hollow valve member 4 to which it is secured at the centre to move downwards to the position shown in this Figure. Wash water thus ejected. from the nozzle outlet 2 .passes up an openended tube 10, Fig. 3, mounted above the nozzle, and entrains sand from the filter bed to effect its circulation and hence cleaning. A number of nozzles, for example five, arranged on a circle may be simultaneously supplied with wash water by radial pipes 12 emanating from a central filtrate discharge pipe 13, the filtrate apertures 15 of which are temporarily obturated by a sleeve 16, which may be actuated by the mechanism 17 ... 20 or hydraulically, to permit either filtered or unfiltered water to be passed up the pipe 13 and sleeve 16. Where more than one nozzle is provided the spring-loading of each valve may be varied by an adjusting screw 7, Fig. 1, to ensure simultaneous operation of the nozzles and hence uniform distribution of wash water. A small balancing port 8 is provided in the wall 4 of the valve-member, Fig. 1, to connect both sides of the diaphragm 5 both to prevent opening of the valve by other than a steady and substantial pressure (of wash water) and to ensure that when the pressure is reduced by shutting off the flow of wash water a spring 6 is enabled to close the valve quickly and promptly. Operation of the nozzles may take place after or simultaneously with a backflushing operation (without sand circulation) brought about by manipulation of suitable valves. The nozzle casings 1 may alternatively be arranged horizontally or at any desired angle.
GB19388/50A 1950-08-03 1950-08-03 Improvements in or relating to filtering apparatus Expired GB721531A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB19388/50A GB721531A (en) 1950-08-03 1950-08-03 Improvements in or relating to filtering apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB19388/50A GB721531A (en) 1950-08-03 1950-08-03 Improvements in or relating to filtering apparatus

Publications (1)

Publication Number Publication Date
GB721531A true GB721531A (en) 1955-01-05

Family

ID=10128526

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19388/50A Expired GB721531A (en) 1950-08-03 1950-08-03 Improvements in or relating to filtering apparatus

Country Status (1)

Country Link
GB (1) GB721531A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0139978A2 (en) * 1983-10-20 1985-05-08 Preussag AG Process for the regeneration of filter material and apparatus for carrying out this process
FR3120237A1 (en) * 2021-03-01 2022-09-02 IFP Energies Nouvelles REGENERABLE SYSTEM AND METHOD FOR FILTRATION OF MICROFIBERS FROM A DRAIN FLUID

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0139978A2 (en) * 1983-10-20 1985-05-08 Preussag AG Process for the regeneration of filter material and apparatus for carrying out this process
EP0139978A3 (en) * 1983-10-20 1986-10-15 Preussag Ag Process for the regeneration of filter material and apparatus for carrying out this process
FR3120237A1 (en) * 2021-03-01 2022-09-02 IFP Energies Nouvelles REGENERABLE SYSTEM AND METHOD FOR FILTRATION OF MICROFIBERS FROM A DRAIN FLUID
WO2022184420A1 (en) * 2021-03-01 2022-09-09 IFP Energies Nouvelles Regenerable system and method for filtering microfibres from a waste liquid

Similar Documents

Publication Publication Date Title
US3487609A (en) Method and apparatus for filtering a gaseous medium
US3703465A (en) Filter with rotating backwash selector
GB812244A (en) A gas filtering apparatus
US2391534A (en) Separator
DK154751B (en) 2-STEER INJECTOR FOR CLEANING GAS DUST FILTERS
ES380808A1 (en) Apparatus for filtering suspended solids from gaseous medium and for removal of filter cake from filter elements
GB1301020A (en) Device for cleaning filter elements
SE470227C (en) Apparatus for separating solid particles from a liquid mixture
JPS56105163A (en) Valve
US6497814B1 (en) Apparatus for cleaning a swimming pool water filter
JPH04505882A (en) spray nozzle
ES336085A1 (en) Apparatus for the continuous separation of solids from a liquid flowing in a conduit
CS241469B2 (en) Rotation drum or disk filter
GB1223294A (en) Improvements in or relating to a process and apparatus for removing the dust from gases
GB1516721A (en) Air filter
US3073529A (en) Spray nozzle
GB721531A (en) Improvements in or relating to filtering apparatus
US2386918A (en) Method and apparatus for projecting liquid jets
US2828017A (en) Automatic backwashing filter
US2434427A (en) Device for cleaning filters
JPS54133613A (en) Diffuser for centrifugal fluid machine
US1858475A (en) Sand blasting machine
CN209501018U (en) A kind of micro- resistance high pressure back-flushing filtering device
CN220143725U (en) Filter element back flush jet device
US894679A (en) Filtering device.