公开(公告)号：US20240344629A1

公开(公告)日：2024-10-17

申请号：US18223550

申请日：2023-07-19

申请人： NINGBO WANAN CO., LTD.

发明人： Feng ZHANG ,  Yunnan WEI ,  Jinghui FAN ,  Jianshen PAN

IPC分类号： F16K31/48 ,  F16K21/04

CPC分类号： F16K31/485 ,  F16K21/04 ,  F16K31/60

摘要： A timed gas cut-off device, which comprises a device body, comprising an inlet gas channel, an outlet gas channel and a valve rod channel; the inlet and outlet gas channels are respectively in communication with the valve rod channel, an accommodation chamber with a through hole communicating the accommodation chamber with the valve rod channel; a valve rod device, comprising a rod body slidably cooperating in the valve rod channel, a shim connected to the rod body and moves in synchronization with the rod body to open or close the valve rod channel; a free end of the rod body extends through the through hole and disposed inside the accommodation chamber; an elastic soft sealing piece, sealingly connected to the through hole, sleeved on the free end of the rod body; a timer with a drive piece connected inside the accommodation chamber for timed gas use and improves the safety.