FLUID MOTOR DRIVE SCREW PUMP, TRANSFER PUMP EQUIPPED WITH THE SAME, AND METHOD OF COLLECTING MARINE RESOURCE

Japanese Patent JP2018059424

A

PROBLEM TO BE SOLVED: To provide a pump which can ensure stable operation performance, and has high energy efficiency.SOLUTION: A fluid motor drive screw pump 10 is equipped with a housing 11; a shaft 40 rotatably supported in the housing 11; a counterclockwise winding male screw-shaped first inner rotor 41 provided at one end of the shaft 40; a first outer rotor 50 which is eccentrically disposed to an axis CL2 of the first inner rotor 41 and has a female screw-shaped inner peripheral surface in the same direction as the first inner rotor 41; a clockwise winding male screw-shaped second inner rotor 42 provided at the other end of the shaft 40; and a second outer rotor 60 which is eccentrically disposed to an axis CL 2 of the second inner rotor 42 and has a female screw-shaped inner peripheral surface in the same direction as the second inner rotor 42. The first inner rotor 41 and the first outer rotor 50 configure a fluid motor portion 20, and the second inner rotor 42 and the second outer rotor 60 configure a screw pump portion 30.SELECTED DRAWING: Figure 1

JP4277096	Uniaxial eccentric screw pump
JP2006233854	JOINT STRUCTURE OF UNIAXIAL ECCENTRIC SCREW PUMP
WO/2009/139658	PROGRESSIVE CAVITY HYDRAULIC MACHINE

HAYASHIMOTO KAZUTOMO

JP2016196174A

April 12, 2018

October 04, 2016

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FURUKAWA CO LTD

F04C2/107; E21C50/00; F04C11/00; F04C15/00

JPH029991A	1990-01-12
JP2004073968A	2004-03-11
JPS5270406A	1977-06-11
JPH0587059A	1993-04-06
JP2018071098A	2018-05-10

CN2720156Y	2005-08-24
US20160195087A1	2016-07-07
US20160097280A1	2016-04-07

Tetsuya Mori
Hide Tanaka Tetsu
Ichi Hirose

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