To transfer carrot pulp with low air-content and at high pressure, by arranging a screw pump which is equipped with a screw from the lower part of a hopper section to the bottom of a straight part in the center of carrot pulp storage tank and connecting a discharge outlet side of this pump to a suction inlet side of a rotary pump.
In a stand-up cylindrical storage tank 1 for carrot pulp, a straight part 3 is extended downward to the bottom of a hopper part 2 and a rotational shaft 6 is inserted into the enter of the storage tank 1. Placing a screw part 7 from the bottom of the hopper part 2 to the bottom of the straight part 3 on the rotational shaft 6, a screw pump 9 in which a casing 8 is the bottom of the hopper part 2 and the straight part 3 is constituted. A discharge outlet 9a side of the screw pump 9 is connected to a suction inlet 11a of a rotary pump 11 via a joint 10 which tapers down. At this time, in order to perform deaeration without reducing forced-feed performance, about 5-15 mm-wide clearance is placed between the screw part 7 and the casing 8.
SUMIMURA KATSUNOBU
INAGUMA TAKAHIRO
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