CHECK VALVE - ISHIZAKI CO LTD

Title:

CHECK VALVE

Document Type and Number:

WIPO Patent Application WO/2021/152842

Kind Code:

A1

Abstract:

A check valve (1) is a straight-point-joint type of diagonal lift valve. The check valve (1) comprises a valve seat (12a), a moving body (2) that can linearly reciprocate between a closed state of being in close contact with the valve seat (12a) and an open state of being separated from the valve seat (12a), a primary flow path (inflow path (12c)) situated on the upstream side of the moving body (2), and a secondary flow path (outflow path (12d)) situated on the downstream side of the moving body (2). The moving body (2) includes a valve body (6) and a valve shaft (7) extending from the valve body (6). The valve seat (12a), which supports the valve body (6), is characterized by being formed so that in a cross section including a center line (CL) of a linearly extending connecting flow path including the primary flow path (inflow path 12c) and the secondary flow path (outflow path 12d), the valve seat (12a) spans across the center line (CL).

Inventors:

ISHIZAKI NOBUYUKI (JP)
OUCHI TAKESHI (JP)
OTA KAZUHIRO (JP)
KIKUCHI DAISUKE (JP)
KOJIMA KAZUHIKO (JP)
HASEGAWA FUTOSHI (JP)
HARA EIJI (JP)
YOSHIDA YUSUKE (JP)

Application Number:

PCT/JP2020/003755

Publication Date:

August 05, 2021

Filing Date:

January 31, 2020

Export Citation:

Click for automatic bibliography generation Help

Assignee:

ISHIZAKI CO LTD (JP)

International Classes:

F16K15/06

Domestic Patent References:

WO2019176850A1	2019-09-19
WO2003038321A2	2003-05-08

Foreign References:

US1703248A	1929-02-26
JP2002213629A	2002-07-31
JP2016205616A	2016-12-08
JP2016075356A	2016-05-12
CN103759050A	2014-04-30
JP2016065572A	2016-04-28
CN104976390A	2015-10-14
US20050062000A1	2005-03-24

Other References: