公开(公告)号：US20160377184A1

公开(公告)日：2016-12-29

申请号：US15038895

申请日：2015-01-22

Applicant: HITACHI HIGH-TECHNOLOGIES CORPORATION

Inventor： Takaaki HARA ,  Hiroshi MORIYA ,  Ayano OTSUBO ,  Yoshihiro NAGAOKA ,  Kiyotoshi MORI ,  Shoji TOMITA

IPC: F16K3/06 ,  G01N30/26

CPC classification number: F16K3/06 ,  F16K11/0743 ,  G01N30/20 ,  G01N30/26 ,  G01N2030/202 ,  G01N2030/385

Abstract: Provided are: a flow path switching valve that reduces the pressure load in a contact surface outer peripheral section of the flow path switching valve and inhibits friction between constituent components; and a liquid chromatographic device using the flow path switching valve. The flow path switching valve is provided with a stator having a plurality of through holes and a seal having conduction grooves for causing the through holes to conduct. The seal has a first portion present vertically beneath a region comprising at least a surface of contact with the stator, and a second portion having lower rigidity than the first portion, on the outside of the first portion. Due to this configuration, it is possible to reduce the pressure load when a flow path of a liquid is switched under high-pressure conditions, and inhibit the phenomenon of friction itself.

Abstract translation: 提供：流路切换阀，其减小流路切换阀的接触面外周部的压力负荷，并且抑制构成部件之间的摩擦; 以及使用流路切换阀的液相色谱装置。 流路切换阀设置有具有多个通孔的定子和具有用于使通孔导通的导电槽的密封件。 密封件具有在第一部分的外侧上垂直地包括至少与定子接触的表面的区域和具有比第一部分低的刚性的第二部分的第一部分。 由于这种构造，当在高压条件下切换液体的流路时，可以降低压力负荷，并且可以抑制摩擦现象本身。