Timed gas cut-off device and gas equipment

A timed gas cut-off device, wherein the device comprises:

• a device body (110), comprising an inlet gas channel (111), an outlet gas channel (112) and a valve rod channel, and the inlet gas channel (111) and the outlet gas channel (112) are respectively in communication with the valve rod channel, an accommodation chamber is further disposed in the device body (110), and a through hole communicating the accommodation chamber with the valve rod channel is disposed;
• a valve rod device (140), comprising a rod body (142) slidably cooperating in the valve rod channel, and a shim (144) connected to the rod body (142), and the shim (144) moves in synchronization with the rod body (142) to open or close the valve rod channel, and a free end of the rod body (142) extends through the through hole and is disposed inside the accommodation chamber;
• an elastic soft sealing piece (141), sealingly connected to the through hole and is sleeved on the free end of the rod body (142);
• a timer (120), connected inside the accommodation chamber, and the timer (120) comprises a drive piece;
• in a timed state, the drive piece drives the movement of the free end of the rod body (142) to enable the shim (144) to open the valve rod channel;
• and when the timing is ended, the drive piece stops driving the free end of the rod body (142) and the shim (144) closes the valve rod channel.