FR2270459A1 - Elution pump for chromatographic sample analysis - has circuit controlling speed of piston drive motor to control output - Google Patents

Elution pump for chromatographic sample analysis - has circuit controlling speed of piston drive motor to control output

Info

Publication number
FR2270459A1
FR2270459A1 FR7415626A FR7415626A FR2270459A1 FR 2270459 A1 FR2270459 A1 FR 2270459A1 FR 7415626 A FR7415626 A FR 7415626A FR 7415626 A FR7415626 A FR 7415626A FR 2270459 A1 FR2270459 A1 FR 2270459A1
Authority
FR
France
Prior art keywords
piston
drive motor
control output
sample analysis
pump
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Withdrawn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
FR7415626A
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.)
INAFRANCE
Original Assignee
INAFRANCE
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 INAFRANCE filed Critical INAFRANCE
Priority to FR7415626A priority Critical patent/FR2270459A1/en
Publication of FR2270459A1 publication Critical patent/FR2270459A1/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Withdrawn legal-status Critical Current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
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
    • F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
    • F04B9/045—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms the means being eccentrics
    • 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
    • F04B49/20—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 changing the driving speed
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/14—Pistons, piston-rods or piston-rod connections
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
    • H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
    • H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
    • H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
    • H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
    • H02P7/285—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only
    • H02P7/288—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using variable impedance

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Reciprocating Pumps (AREA)

Abstract

An elutriation pump for analysis of chromatographic samples, in which the sample is pumped through a vertical column by a block (1) with a vertical channel (2) by a horizontal piston (9), employs an electric motor to drive the piston. The drive arrangement includes an eccentrically mounted ring (10) rotating inside an elongated groove (15) in a slider (13) with an extension (16) to which the piston is attached by a threaded connection (18b). The output of the pump is controlled by varying the motor speed, by means of an automatic control circuit with a set of resistors at the input which can switch in as required, followed by an operational amplifier and a comparator stage. The proportions of the size and the travel of the piston are specified.
FR7415626A 1974-05-06 1974-05-06 Elution pump for chromatographic sample analysis - has circuit controlling speed of piston drive motor to control output Withdrawn FR2270459A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7415626A FR2270459A1 (en) 1974-05-06 1974-05-06 Elution pump for chromatographic sample analysis - has circuit controlling speed of piston drive motor to control output

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7415626A FR2270459A1 (en) 1974-05-06 1974-05-06 Elution pump for chromatographic sample analysis - has circuit controlling speed of piston drive motor to control output

Publications (1)

Publication Number Publication Date
FR2270459A1 true FR2270459A1 (en) 1975-12-05

Family

ID=9138499

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7415626A Withdrawn FR2270459A1 (en) 1974-05-06 1974-05-06 Elution pump for chromatographic sample analysis - has circuit controlling speed of piston drive motor to control output

Country Status (1)

Country Link
FR (1) FR2270459A1 (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
EP0085795A1 (en) * 1982-01-20 1983-08-17 Braun Aktiengesellschaft Device for the care and cleaning of teeth and gums

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
EP0085795A1 (en) * 1982-01-20 1983-08-17 Braun Aktiengesellschaft Device for the care and cleaning of teeth and gums

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Legal Events

Date Code Title Description
ST Notification of lapse