LIQUID FEEDING PUMP AND LIQUID FEEDING METHOD

The present invention provides a technique that enables liquid feeding with small pulsation by reducing the volume of a liquid feeding pump. Disclosed is a liquid feeding pump comprising: a first plunger pump that has a first plunger; a second plunger pump that has a second plunger and is connected...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	HASHIMOTO, Yuichiro, IWASA, Sho, TSUKADA, Nobuhiro, YOTA, Yusuke, AKIEDA, Daisuke
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING HEATING INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES LIGHTING MEASURING MECHANICAL ENGINEERING PHYSICS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS TESTING WEAPONS
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Beschreibung
Zusammenfassung:	The present invention provides a technique that enables liquid feeding with small pulsation by reducing the volume of a liquid feeding pump. Disclosed is a liquid feeding pump comprising: a first plunger pump that has a first plunger; a second plunger pump that has a second plunger and is connected to the first plunger pump in series; a pressure sensor that is disposed on the downstream side of the second plunger pump; and a control unit that accepts an input of the discharge pressure of a liquid measured by the pressure sensor to control driving of the first plunger and driving of the second plunger, wherein when the first plunger pump compresses the liquid, the control unit drives the first plunger at a first speed, and then decreases the speed to a second speed slower than the first speed before the compression is completed, and wherein the control unit discharges the liquid from the second plunger pump by driving the second plunger in parallel with the driving of the first plunger.