Title:
CUT-OFF VALVE
Document Type and Number:
WIPO Patent Application WO/2023/159732
Kind Code:
A1
Abstract:
A cut-off valve comprises: a valve body (10) provided with a valve chamber (11) and a first flow channel (12) and a second flow channel (13) both in communication with the valve chamber (11), the first flow channel (12) penetrating through the inner wall of the valve chamber (11) and forming a first communication port (14); and a diaphragm (20) arranged in the valve chamber (11) and having a blocking protrusion (21) on the side facing the first communication port (14). The blocking protrusion (21) has a first conical surface (210) serving as a peripheral side surface thereof, and the radial size of the blocking protrusion (21) gradually increases from one end close to the first communication port (14) to the end away from the first communication port (14). The circumferential edge of the first communication port (14) is provided with a first chamfer slope (141) or a rounded arc surface. The diaphragm (20) may controllably drive the blocking protrusion (21) to move to the first conical surface (210) to abut against the first chamfer slope (141) or the rounded arc surface.
Inventors:
SUN YIZHOU (CN)
JIANG ZHONGYI (CN)
JIANG ZHONGYI (CN)
Application Number:
PCT/CN2022/087717
Publication Date:
August 31, 2023
Filing Date:
April 19, 2022
Export Citation:
Assignee:
WUXI LEAD INTELLIGENT EQUIPMENT CO LTD (CN)
International Classes:
F16K1/00; F16K1/32; F16K1/38; F16K7/17; F16K27/02; F16K31/122
Foreign References:
| CN111750124A | 2020-10-09 | |||
| CN201696657U | 2011-01-05 | |||
| CN202501017U | 2012-10-24 | |||
| US6000416A | 1999-12-14 | |||
| US6394417B1 | 2002-05-28 | |||
| CN217328480U | 2022-08-30 | |||
| JP2004316679A | 2004-11-11 | |||
| US20210080013A1 | 2021-03-18 |
Attorney, Agent or Firm:
SUZHOU HENGCHUANG INTELLECTUAL PROPERTY FIRM (GENERAL PARTNERSHIP) (CN)
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