LIQUID-FEEDING PUMP FOR LIQUID CHROMATOGRAPHY

PROBLEM TO BE SOLVED: To accurately feed liquid without being affected by an air bubble in an eluent. SOLUTION: A pump is provided with two pump heads with a different volume having first pump heads 5A1 and 5A2 and second pump heads 5B1 and 5B2 that are commonly driven by a coaxial plunger with a di...

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Bibliographische Detailangaben
1. Verfasser:	SAITO TOSHINORI
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING HEATING INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES LIGHTING MEASURING MECHANICAL ENGINEERING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PHYSICS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS SEPARATION TESTING TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To accurately feed liquid without being affected by an air bubble in an eluent. SOLUTION: A pump is provided with two pump heads with a different volume having first pump heads 5A1 and 5A2 and second pump heads 5B1 and 5B2 that are commonly driven by a coaxial plunger with a different diameter. Then, the two pump heads being driven by the large-diameter part of each coaxial plunger with a different diameter of the first pump heads 5A1 and 5A2 and the second pump heads 5B1 and 5B2 are set to a first pump 5A, the two pump heads being driven by a small-diameter part of the coaxial plunger with a different diameter are set to a second pump 5B, the first pump 5A is serially connected to the second pump 5B, and an air/liquid separator 4 for eliminating an air bubble in an eluent being heated by a heater 8 that is installed at the discharge port of the first pump 5A is provided. In this case, the eluent where an air bubble is eliminated by the gas/liquid separator 4 is sucked by the second pump 5B and is sent to the analysis part.