Well lid structure capable of preventing open fire from entering hole to ignite gas

The utility model discloses a well lid structure capable of preventing open fire from entering a hole to ignite gas, which comprises a concrete well ring arranged at the top of a well body, an annular well lid support is supported on the well body in the concrete well ring, and a first well lid body and a second well lid body are supported in the well lid support in a limited manner. The first well lid body and the second well lid body are connected through a hinge between plates, the two ends of a rotating shaft of the hinge between the plates are connected with shaft rods for fixing, the ends of the shaft rods are embedded in the concrete well ring, a plurality of vent holes are formed in the first well lid body, and a collecting groove is fixed to the inner wall of the well body below the vent holes. The second well lid body is provided with a hook hole for overhauling, and the hook hole is a blind hole. The anti-deflagration gas well has the remarkable effects that the dense-hole filter screen is arranged