To secure reliability and to prolong the lifetime of a seawater desalination device by preventing wear caused by the friction of a power recovery chamber so as to suppress the generation of abrasion powder, and to decrease the friction loss of the power recovery chamber and reduce the cost of the chamber.
The power recovery chamber includes a cylinder 31, a piston 33 disposed in the cylinder 31 and capable of being reciprocated in the longitudinal direction of the cylinder 31, and a piston guide 35 disposed in the cylinder 31 and extending in the longitudinal direction of the cylinder 31 for guiding the piston 33 when the piston 33 is reciprocated in the longitudinal direction of the cylinder 31. At least a part of the outer circumferential surface of the piston 33 does not contact with the inner surface of the cylinder 31, and the piston 33 is brought into contact with the piston guide 35 at a part where the piston guide 35 passes through the piston 33.
HOSHINO KENICHI
GOTO AKIRA
JINNO HIDEKI
| JPS6412083A | 1989-01-17 | |||
| JPS6353069U | 1988-04-09 | |||
| JPS48108048U | 1973-12-13 | |||
| JPS58142072A | 1983-08-23 | |||
| JPH1018977A | 1998-01-20 | |||
| JP2005177753A | 2005-07-07 |
Ryoji Kosugi
Tetsuya Hirosawa