FR2292135A1 - Constant flow control on metering pump - having stroke adjustment linked to pressure sensor on damper - Google Patents

Constant flow control on metering pump - having stroke adjustment linked to pressure sensor on damper

Info

Publication number
FR2292135A1
FR2292135A1 FR7535617A FR7535617A FR2292135A1 FR 2292135 A1 FR2292135 A1 FR 2292135A1 FR 7535617 A FR7535617 A FR 7535617A FR 7535617 A FR7535617 A FR 7535617A FR 2292135 A1 FR2292135 A1 FR 2292135A1
Authority
FR
France
Prior art keywords
pump
delivery
stroke
damper
adjust
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.)
Withdrawn
Application number
FR7535617A
Other languages
French (fr)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of FR2292135A1 publication Critical patent/FR2292135A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F04B43/06—Pumps having fluid drive
    • F04B43/067—Pumps having fluid drive the fluid being actuated directly by a 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
    • F04B13/00—Pumps specially modified to deliver fixed or variable measured quantities
    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/08—Regulating by delivery pressure
    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/12—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

Metering pump with method for ensuring a constant volume delivery in unit time independent of the delivery pressure uses a measure of the delivery pressure to adjust the pump delivery volume, increasing it with increased pressure. The pump is a piston pump with adjustable stroke and to adjust the volume, the stroke is adjusted. There is a damper in the pump delivery and a sensor for the delivery pressure on this which produces an electric signal fed to an electronic controller, this being in principle a Wheatstone bridge where the potential from the sensor is measured against a standard. This then adjusts a positioning motor which in turn can adjust either the stroke or the r.p.m. Esp. for metering solvent into chromotograph columns. Piston type metering pumps, including diaphragm tupes, suffer from the defect that the volumetric throughput of the pump declines with increasing delivery to achieve a constant output. The system described provides for adjustment of stroke to overcome this problem.
FR7535617A 1974-11-23 1975-11-21 Constant flow control on metering pump - having stroke adjustment linked to pressure sensor on damper Withdrawn FR2292135A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742455598 DE2455598A1 (en) 1974-11-23 1974-11-23 SYSTEM WITH A DISPLACEMENT PUMP, IN PARTICULAR DOSING PUMP, AND A CONTROL DEVICE TO KEEP THE FLOW RATE PER TIME UNIT

Publications (1)

Publication Number Publication Date
FR2292135A1 true FR2292135A1 (en) 1976-06-18

Family

ID=5931615

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7535617A Withdrawn FR2292135A1 (en) 1974-11-23 1975-11-21 Constant flow control on metering pump - having stroke adjustment linked to pressure sensor on damper

Country Status (3)

Country Link
JP (1) JPS5173603A (en)
DE (1) DE2455598A1 (en)
FR (1) FR2292135A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2388147A1 (en) * 1977-01-21 1978-11-17 Magnussen Haakon VOLUMETRIC PUMP AND ITS ELECTRONIC CONTROL CIRCUIT
FR2428158A2 (en) * 1978-06-07 1980-01-04 Magnussen Haakon Jun PUMP FOR LIQUID PHASE CHROMATOGRAPHY

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4204809A (en) * 1977-12-14 1980-05-27 General Signal Corporation Wide range control for delivery apparatus
JPS6234171U (en) * 1985-08-19 1987-02-28
JPH081175B2 (en) * 1986-06-02 1996-01-10 大阪瓦斯株式会社 Reciprocating pump monitoring device
JP2713401B2 (en) * 1987-01-17 1998-02-16 日本分光株式会社 Reciprocating pump
DE3785207T2 (en) * 1987-09-26 1993-07-15 Hewlett Packard Gmbh PUMP DEVICE FOR DISPENSING LIQUID AT HIGH PRESSURE.
ES2117801T3 (en) * 1993-09-27 1998-08-16 Unilever Nv PUMPING SYSTEM WITH FLOW METER AND LOAD COMPENSATION AND PROCEDURE FOR THE SAME.
EP2890278B1 (en) * 2012-08-16 2020-10-14 Gideon Duvall Device and system for brewing infused beverages

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2388147A1 (en) * 1977-01-21 1978-11-17 Magnussen Haakon VOLUMETRIC PUMP AND ITS ELECTRONIC CONTROL CIRCUIT
FR2428158A2 (en) * 1978-06-07 1980-01-04 Magnussen Haakon Jun PUMP FOR LIQUID PHASE CHROMATOGRAPHY

Also Published As

Publication number Publication date
JPS5173603A (en) 1976-06-25
DE2455598A1 (en) 1976-05-26

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Legal Events

Date Code Title Description
ST Notification of lapse