| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a device for preventing liquid leakage at a movable seal part of a piston pump which eliminates a leak of liquid even at ultra-high pressure. <P>SOLUTION: The device of liquid leakage at the movable seal part of the piston pump is provided with a cylinder 1, a piston 2, a ring, and a cap screw 8 used for pressing down the ring. The piston 2 performs reciprocating motion in the cylinder 1, and the ring prevents the leakage of liquid between the cylinder 1 and the piston 2. The ring is constituted by incorporating two kinds of rings alternately, namely a plurality of rings 3 on the piston side having truncated conical shapes on both side surfaces and a plurality of rings 4 on the cylinder side having truncated conical shapes on both side surfaces. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
