CONTINUOUS LIQUID FEED SYSTEM AND CONTROL METHOD FOR THE SAME

PROBLEM TO BE SOLVED: To restrain the fluctuation of a liquid feed amount even when switching a pump used for liquid feed operation while preventing a break of backflow in a continuous liquid feed system.SOLUTION: The continuous liquid feed system 50 is adapted to suck liquid stored in a container 4...

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Hauptverfasser: ENDO KIJU, TSURU HIDEKAZU
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creator ENDO KIJU
TSURU HIDEKAZU
description PROBLEM TO BE SOLVED: To restrain the fluctuation of a liquid feed amount even when switching a pump used for liquid feed operation while preventing a break of backflow in a continuous liquid feed system.SOLUTION: The continuous liquid feed system 50 is adapted to suck liquid stored in a container 40 and to pressurize and discharge the liquid to a demand source. The system 50 includes a plurality of pumps 18a, 18b communicating with the container; valves 22a, 22b provided at the plurality of pumps respectively and arranged between the pumps and the container; motors 13a, 13b provided at the respective pumps to drive the pumps; and a controller 31 for controlling the motors and the valves. When discharging the predetermined flow by the single pump, the controller puts the other pump in sucking operation or stops it, and reduces the discharge flow of the pump that discharges or has discharged singly for a predetermined time from the start of discharge and for a predetermined time immediately before the end of discharge when the single pump discharges, and further causes the other pump to discharge only the reduced flow portion.
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subjects BLASTING
HEATING
LIGHTING
MECHANICAL ENGINEERING
POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS
PUMPS
PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
WEAPONS
title CONTINUOUS LIQUID FEED SYSTEM AND CONTROL METHOD FOR THE SAME
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