GB2240819B - De-sludging systems - Google Patents

De-sludging systems

Info

Publication number
GB2240819B
GB2240819B GB9025348A GB9025348A GB2240819B GB 2240819 B GB2240819 B GB 2240819B GB 9025348 A GB9025348 A GB 9025348A GB 9025348 A GB9025348 A GB 9025348A GB 2240819 B GB2240819 B GB 2240819B
Authority
GB
United Kingdom
Prior art keywords
sludging
systems
sludging systems
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 - Fee Related
Application number
GB9025348A
Other versions
GB2240819A (en
GB9025348D0 (en
Inventor
John Matheson
Peter Hassall
Colin Stanley Smith
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.)
Thomas Willett and Co Ltd
Original Assignee
Thomas Willett and 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 Thomas Willett and Co Ltd filed Critical Thomas Willett and Co Ltd
Publication of GB9025348D0 publication Critical patent/GB9025348D0/en
Priority to CA002035255A priority Critical patent/CA2035255C/en
Priority to US07/649,610 priority patent/US5161954A/en
Publication of GB2240819A publication Critical patent/GB2240819A/en
Application granted granted Critical
Publication of GB2240819B publication Critical patent/GB2240819B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/22—Adaptations of pumping plants for lifting sewage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/02—Settling tanks with single outlets for the separated liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/245—Discharge mechanisms for the sediments
    • B01D21/2461—Positive-displacement pumps; Screw feeders; Trough conveyors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/30—Control equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/30—Control equipment
    • B01D21/302—Active control mechanisms with external energy, e.g. with solenoid valve
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/30—Control equipment
    • B01D21/34—Controlling the feed distribution; Controlling the liquid level ; Control of process parameters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2203/00—Motor parameters
    • F04B2203/09—Motor parameters of linear hydraulic motors
    • F04B2203/0902—Liquid pressure in a working chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2203/00—Motor parameters
    • F04B2203/09—Motor parameters of linear hydraulic motors
    • F04B2203/0903—Position of the driving piston
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2205/00—Fluid parameters
    • F04B2205/14—Viscosity
GB9025348A 1990-02-08 1990-11-21 De-sludging systems Expired - Fee Related GB2240819B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA002035255A CA2035255C (en) 1990-02-08 1991-01-30 De-sludging systems
US07/649,610 US5161954A (en) 1990-02-08 1991-02-01 De-sludging systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB909002801A GB9002801D0 (en) 1990-02-08 1990-02-08 Desludging systems

Publications (3)

Publication Number Publication Date
GB9025348D0 GB9025348D0 (en) 1991-01-02
GB2240819A GB2240819A (en) 1991-08-14
GB2240819B true GB2240819B (en) 1993-07-28

Family

ID=10670613

Family Applications (2)

Application Number Title Priority Date Filing Date
GB909002801A Pending GB9002801D0 (en) 1990-02-08 1990-02-08 Desludging systems
GB9025348A Expired - Fee Related GB2240819B (en) 1990-02-08 1990-11-21 De-sludging systems

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB909002801A Pending GB9002801D0 (en) 1990-02-08 1990-02-08 Desludging systems

Country Status (2)

Country Link
DE (1) DE4103430A1 (en)
GB (2) GB9002801D0 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2474691A (en) * 2009-10-23 2011-04-27 Inverter Drive Systems Ltd Pump Control System And Method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2096708A (en) * 1981-01-30 1982-10-20 Whitehead & Poole Improvements relating to pumping apparatus
WO1986003800A1 (en) * 1984-12-21 1986-07-03 Adams Harold P Jr Oil level sensor system and method for oil wells

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2096708A (en) * 1981-01-30 1982-10-20 Whitehead & Poole Improvements relating to pumping apparatus
WO1986003800A1 (en) * 1984-12-21 1986-07-03 Adams Harold P Jr Oil level sensor system and method for oil wells

Also Published As

Publication number Publication date
GB2240819A (en) 1991-08-14
GB9025348D0 (en) 1991-01-02
GB9002801D0 (en) 1990-04-04
DE4103430A1 (en) 1991-08-14

Similar Documents

Publication Publication Date Title
GR3023153T3 (en) Locating system
GB9116745D0 (en) Space dividing system
GB9014118D0 (en) Connection system
GB9117303D0 (en) System
GB2240557B (en) Partitioning systems
GB2243041B (en) Direction finding system
GB9223167D0 (en) Cenveyor system
EP0447873A3 (en) Communicating system
GB2240819B (en) De-sludging systems
EP0447751A3 (en) Size-normalisation system
GB9002083D0 (en) Whirlpool-and spa-bath systems
GB2244162B (en) Timer systems
GB9004201D0 (en) Construction systems
HU912776D0 (en) Coating system
GB9023650D0 (en) Waste-recycling system
GB9022255D0 (en) Anti-intruder system
GB9020196D0 (en) Tremold system
GR900200309U (en) Anti-burglar system
GB9016611D0 (en) Tile-cladding system
GB9006743D0 (en) Viewsafe system
GB9017973D0 (en) Water-recycling system
GB9011617D0 (en) Ranging system
GB9005596D0 (en) The micro-disc system
IL95513A0 (en) Improved multi-exercise system
GB9005464D0 (en) Support systems

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19971121

728V Application for restoration filed (sect. 28/1977)
728Y Application for restoration allowed (sect. 28/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20081121