Title:
SWING CHECK VALVE HAVING SLOW-CLOSING FUNCTION
Document Type and Number:
WIPO Patent Application WO/2023/155396
Kind Code:
A1
Abstract:
A swing check valve having a slow-closing function. The swing check valve comprises a swing check valve body (1), which comprises a valve body (11), a valve seat (12), a valve disc (13), a rocker (14) and a valve cover (15). The swing check valve further comprises an elastic sliding device allowing the valve disc (13) to close slowly. The elastic sliding device comprises a connecting stand (16) and an elastic member (17). Sliding grooves (143) are provided in the back face of the rocker (14) facing the connecting stand (16). Engagement members (18) are movably mounted in the sliding grooves (143), and are slidable in the sliding grooves (143) towards and away from a hinge side of the rocker (14). One end of the elastic member (17) is connected to the connecting stand (16), and the other end thereof is connected to the engagement member (18). When the valve disc (13) closes, the elastic member (17) produces damping that prevents the valve disc (13) from closing, so as to slow down the closing of the valve disc (13).
Inventors:
LIN BIN (CN)
CUI GUODONG (CN)
PAN HONG (CN)
XIA ZHAOHUI (CN)
CUI GUODONG (CN)
PAN HONG (CN)
XIA ZHAOHUI (CN)
Application Number:
PCT/CN2022/112401
Publication Date:
August 24, 2023
Filing Date:
August 15, 2022
Export Citation:
Assignee:
WISDRI ENGINEERING & RES INCORPORATION LIMITED (CN)
International Classes:
F16K15/03; F16K47/02
Foreign References:
| CN217108345U | 2022-08-02 | |||
| CN213332558U | 2021-06-01 | |||
| CN214274588U | 2021-09-24 | |||
| CN210423838U | 2020-04-28 | |||
| KR20180054175A | 2018-05-24 | |||
| CN201810831U | 2011-04-27 | |||
| CN101251203A | 2008-08-27 | |||
| JPH06229480A | 1994-08-16 |
Attorney, Agent or Firm:
BEIJING HUIZE INTELLECTUAL PROPERTY LAW LLC (CN)
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