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WO1995034365A1 - Appareil pour evacuer les matieres solides d'un systeme de traitement de fluide - Google Patents

Appareil pour evacuer les matieres solides d'un systeme de traitement de fluide Download PDF

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Publication number
WO1995034365A1
WO1995034365A1 PCT/US1994/006532 US9406532W WO9534365A1 WO 1995034365 A1 WO1995034365 A1 WO 1995034365A1 US 9406532 W US9406532 W US 9406532W WO 9534365 A1 WO9534365 A1 WO 9534365A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
reservoir
solid matter
recited
inlet
Prior art date
Application number
PCT/US1994/006532
Other languages
English (en)
Inventor
Steven D. Ford
Original Assignee
Claude Laval Corporation
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
Priority to US07/993,568 priority Critical patent/US5320747A/en
Priority claimed from US07/993,568 external-priority patent/US5320747A/en
Application filed by Claude Laval Corporation filed Critical Claude Laval Corporation
Priority to PCT/US1994/006532 priority patent/WO1995034365A1/fr
Publication of WO1995034365A1 publication Critical patent/WO1995034365A1/fr

Links

Classifications

    • 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
    • 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
    • B01D21/26—Separation of sediment aided by centrifugal force or centripetal force
    • 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

Definitions

  • This invention relates to a method and apparatus for removing solid matter from fluid systems, and more particularly to a method and apparatus for purging solid matter which has accumulated within a solid matter separation system.
  • the present invention describes a novel method and apparatus for the purging of solid matter which has accumulated within a solid matter separation system.
  • the invention allows continuous operation of the fluid system, nearly eliminates fluid loss from the system, and requires only limited space. This is accomplished by isolating the solid matter collection reservoir from the system during the brief purging process. The reservoir is vented to prevent the buildup of pressure differentials during the purging sequence and also to prevent the introduction of air into the separation device.
  • FIG. 1 is a perspective view of one embodiment of the invention.
  • FIG.2 is a diagrammatic presentation of the control mechanism of the present invention.
  • FIG. 1 a preferred embodiment of the present invention utilizing a solid matter centrifugal separator 10, well known in the art.
  • Fluid from the system from which solid matter is to be removed enters the separator 10 at inlet port 12, and uncontaminated fluid exits the separator at outlet port 14.
  • Solid matter which has been removed from the fluid passes from the separator via line 16, and, after passing through manual valve 20 and reservoir inlet valve 22, enters the reservoir 30 through reservoir inlet line 32.
  • Manual valve 20 and reservoir inlet valve 22 are normally in the open positions to allow solid matter to pass into the reservoir 30.
  • Manual valve 20 would ordinarily be used to isolate the reservoir from the fluid system for maintenance.
  • Reservoir inlet valve 22 operates during the reservoir purging sequence to be described below.
  • the reservoir 30 is fabricated from a transparent material which will allow visual inspection to determine if purging is required.
  • the reservoir 30 may be an elongate, transparent cylinder. This cylinder is sealed at its ends by gasket assemblies 40 and 42, which are held in a relatively fixed position by four elongate bolts 44. The gasket assemblies 40 and 42 are secured to reservoir inlet line 32 and reservoir outlet line 34.
  • pressure relief valve 24 connected to gasket assembly 40, which is vented to the atmosphere and operates to equalize pressure changes within the reservoir and to prevent the introduction of air into the separation system when the 'reservoir is reconnected to the separation system at the end of the purging sequence.
  • FIG. 2 is a diagram of a control system for the present invention, in which a controller 60 sends operating signals to a solenoid assembly 62.
  • the controller may be programmed to automatically purge at such times as desired, and may also control the duration of the various purge sequential operations.
  • the controller 60 may also be manually actuated if a purging out of the ordinary programmed timing cycle is desired.
  • a preferred embodiment of the invention will use pneumatic pressure from a compressed air supply 64 which is controlled by the solenoid assembly 62 to direct pressure to valves 22, 24, and 26 for control of the purging process.
  • valves 22, 24, and 26 are pneumatic pinch valves.
  • Typical operation of the present invention would be as follows. In the normal configuration, manual valve 20 and inlet valve 22 are open, while relief valve 24 and outlet valve 26 are closed. When a purging of the reservoir 30 is necessary, either as determined visually or as preset into the controller 40, signals are sent to the solenoid assembly 62 to begin the purging sequence. First, inlet valve 22 closes to isolate the reservoir during the purge cycle. Next, relief valve 24 and outlet valve 26 open simultaneously so that collected solid matter may be discharged. The relief valve is necessary to prevent the buildup of a pressure differential within the reservoir which would hinder the solid matter from discharging.
  • outlet valve 26 will close and inlet valve 22 will open to allow the reservoir to be refilled from the fluid system.
  • Relief valve 24 remains in the open position to allow discharge of air from the reservoir as it fills with fluid.
  • a programmed delay period of appropriate duration typically two seconds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Centrifugal Separators (AREA)

Abstract

L'invention concerne un procédé et un appareil pour évacuer les matières solides d'un système de traitement de fluide. Le procédé de l'invention ne nécessite pas un arrêt du fonctionnement du système et diminue les pertes de fluide. Selon ce procédé, on isole d'abord le réservoir (30) de collecte des matières solides du dispositif de séparation (10) et on purge le réservoir (30) de ses matières solides en vue de leur élimination ou récupération. L'opération de purge est améliorée par l'utilisation d'un système d'élimination d'air (24) qui empêche l'apparition d'un différentiel de pression et l'introduction d'air dans le dispositif de séparation durant l'opération de purge. L'ensemble des opérations peut être commandé manuellement ou automatiquement par l'intermédiaire d'un système de commande.
PCT/US1994/006532 1992-12-21 1994-06-10 Appareil pour evacuer les matieres solides d'un systeme de traitement de fluide WO1995034365A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US07/993,568 US5320747A (en) 1992-12-21 1992-12-21 Apparatus for removing solid matter from fluid systems
PCT/US1994/006532 WO1995034365A1 (fr) 1992-12-21 1994-06-10 Appareil pour evacuer les matieres solides d'un systeme de traitement de fluide

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/993,568 US5320747A (en) 1992-12-21 1992-12-21 Apparatus for removing solid matter from fluid systems
PCT/US1994/006532 WO1995034365A1 (fr) 1992-12-21 1994-06-10 Appareil pour evacuer les matieres solides d'un systeme de traitement de fluide

Publications (1)

Publication Number Publication Date
WO1995034365A1 true WO1995034365A1 (fr) 1995-12-21

Family

ID=26788295

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1994/006532 WO1995034365A1 (fr) 1992-12-21 1994-06-10 Appareil pour evacuer les matieres solides d'un systeme de traitement de fluide

Country Status (1)

Country Link
WO (1) WO1995034365A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4517099A (en) * 1983-10-07 1985-05-14 Breckner Raymond A Apparatus and method for handling solids in liquid
US4762620A (en) * 1985-05-10 1988-08-09 Inphardial S.P.A. Method and apparatus for measuring the quantity of plasma water removed during hemodialysis
US5024762A (en) * 1985-03-05 1991-06-18 Memtec Limited Concentration of solids in a suspension

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4517099A (en) * 1983-10-07 1985-05-14 Breckner Raymond A Apparatus and method for handling solids in liquid
US4517099B1 (fr) * 1983-10-07 1989-01-10
US5024762A (en) * 1985-03-05 1991-06-18 Memtec Limited Concentration of solids in a suspension
US4762620A (en) * 1985-05-10 1988-08-09 Inphardial S.P.A. Method and apparatus for measuring the quantity of plasma water removed during hemodialysis

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