Title:
PRESSURE MAINTAINING GAS CYLINDER VALVE
Document Type and Number:
WIPO Patent Application WO/2023/279870
Kind Code:
A1
Abstract:
A gas cylinder valve having a pressure maintaining function, relating to the technical field of valves, and comprising a valve body (9). An air inlet port (11) is arranged at the bottom of the valve body (9); an air outlet port (15) is arranged on one side of the valve body (9); the valve body (9) is provided with a valve cavity (4) and a ventilation channel (7) communicated with the valve cavity (4); the air inlet port (11) is provided with an air inlet hole (10) communicated with the valve cavity (4); a valve seat (8) is arranged at the top end of the air inlet hole (10); the air outlet port (15) is provided with an air outlet hole (16) communicated with the ventilation channel (7); the valve cavity (4) is provided with a valve core (5); the valve core (5) is connected to a manual control part; an axis of the ventilation channel (7) and an axis of the valve cavity (4) are in a same vertical plane; the ventilation channel (7) penetrates through the valve cavity (4); a pressure maintaining device is arranged on the end of the ventilation channel (7) close to the air outlet hole (16); a pressure maintaining valve seat (20) is arranged at the position where the ventilation channel (7) is connected to the air outlet hole (16). The utility model is simple in structure, size in small, and light in weight, the volume of the valve is reduced, and the use cost is reduced.
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Inventors:
MA ZHENGYUN (CN)
GONG HAOWEI (CN)
LU WEIGUO (CN)
GONG HAOWEI (CN)
LU WEIGUO (CN)
Application Number:
PCT/CN2022/094614
Publication Date:
January 12, 2023
Filing Date:
May 24, 2022
Export Citation:
Assignee:
DANYANG FEILUN GAS VALVE CO LTD (CN)
International Classes:
F16K1/00; F16K15/20; F16K15/18; F16K27/02
Foreign References:
| CN210440587U | 2020-05-01 | |||
| CN1078027A | 1993-11-03 | |||
| CN214946629U | 2021-11-30 | |||
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| CN207378494U | 2018-05-18 | |||
| CN209494938U | 2019-10-15 | |||
| CN210716169U | 2020-06-09 | |||
| CN202834234U | 2013-03-27 | |||
| US20060011883A1 | 2006-01-19 | |||
| US4782861A | 1988-11-08 | |||
| EP2003379A1 | 2008-12-17 | |||
| CN208153787U | 2018-11-27 |
Attorney, Agent or Firm:
JINAN DINGXIN PATENT AND TRADEMARK AGENCY (GENERAL PARTNERSHIP) (CN)
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