GB1522552A - Pumping systems - Google Patents

Pumping systems

Info

Publication number
GB1522552A
GB1522552A GB503276A GB503276A GB1522552A GB 1522552 A GB1522552 A GB 1522552A GB 503276 A GB503276 A GB 503276A GB 503276 A GB503276 A GB 503276A GB 1522552 A GB1522552 A GB 1522552A
Authority
GB
United Kingdom
Prior art keywords
shaft
piston
feb
casing
valve
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
GB503276A
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.)
Shandon Diagnostics Ltd
Original Assignee
Shandon Southern Products 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 Shandon Southern Products Ltd filed Critical Shandon Southern Products Ltd
Priority to GB503276A priority Critical patent/GB1522552A/en
Publication of GB1522552A publication Critical patent/GB1522552A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02Column chromatography
    • G01N30/26Conditioning of the fluid carrier; Flow patterns
    • G01N30/28Control of physical parameters of the fluid carrier
    • G01N30/36Control of physical parameters of the fluid carrier in high pressure liquid systems
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02Column chromatography
    • G01N30/26Conditioning of the fluid carrier; Flow patterns
    • G01N30/28Control of physical parameters of the fluid carrier
    • G01N30/32Control of physical parameters of the fluid carrier of pressure or speed
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D7/00Control of flow
    • G05D7/06Control of flow characterised by the use of electric means
    • G05D7/0617Control of flow characterised by the use of electric means specially adapted for fluid materials
    • G05D7/0629Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means
    • G05D7/0676Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means by action on flow sources
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02Column chromatography
    • G01N30/26Conditioning of the fluid carrier; Flow patterns
    • G01N30/28Control of physical parameters of the fluid carrier
    • G01N30/32Control of physical parameters of the fluid carrier of pressure or speed
    • G01N2030/326Control of physical parameters of the fluid carrier of pressure or speed pumps

Abstract

1522552 Reciprocating pumps SHANDON SOUTHERN PRODUCTS Ltd 8 Feb 1977 [9 Feb 1976] 5032/76 Heading F1A [Also in Division G3] A double-acting reciprocating pump 26 for providing a controlled flow of pressurized liquid (to a chromatographic column) comprises a shaft 25 which carries a piston 32 sealed to the bore of casing 27 by a ring 30. The shaft has a threaded portion 24 so that it is reciprocated as a ball nut 22 is rotated by electric stepping motor 21 in alternate directions. Motor reversal is provided by micro-switches 40a, b operated by a shaft lug 39. The liquid input 37 and output 38 are connected to the casing on both sides of the piston via non- return valves 36a-d. As the piston moves to the right, for example, liquid enters via valve 36a and leaves via valve 36d.
GB503276A 1977-02-08 1977-02-08 Pumping systems Expired GB1522552A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB503276A GB1522552A (en) 1977-02-08 1977-02-08 Pumping systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB503276A GB1522552A (en) 1977-02-08 1977-02-08 Pumping systems

Publications (1)

Publication Number Publication Date
GB1522552A true GB1522552A (en) 1978-08-23

Family

ID=9788461

Family Applications (1)

Application Number Title Priority Date Filing Date
GB503276A Expired GB1522552A (en) 1977-02-08 1977-02-08 Pumping systems

Country Status (1)

Country Link
GB (1) GB1522552A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7908056A (en) * 1979-11-02 1981-06-01 Inst Neftechimicheskogo Sintez Eluting agent stream for liq. chromatography - passed to the column under osmotic press. from a soln. of a prod. held at constant concn.
EP0231566A1 (en) * 1986-02-05 1987-08-12 Magnetopulse Ltd. Improvements in and relating to liquid chromatography
WO2016120822A1 (en) * 2015-01-28 2016-08-04 Corob S.P.A. Con Socio Unico Double-chamber piston pump for the distribution of fluid products

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7908056A (en) * 1979-11-02 1981-06-01 Inst Neftechimicheskogo Sintez Eluting agent stream for liq. chromatography - passed to the column under osmotic press. from a soln. of a prod. held at constant concn.
EP0231566A1 (en) * 1986-02-05 1987-08-12 Magnetopulse Ltd. Improvements in and relating to liquid chromatography
WO2016120822A1 (en) * 2015-01-28 2016-08-04 Corob S.P.A. Con Socio Unico Double-chamber piston pump for the distribution of fluid products
CN107873072A (en) * 2015-01-28 2018-04-03 克洛布单股东股份公司 For distributing the double volume room piston pump of fluid product
US10767638B2 (en) 2015-01-28 2020-09-08 Corob S.P.A. Double-chamber piston pump for the distribution of fluid products

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Legal Events

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