Safety automatic gas and water separator of marsh

The utility model relates to a safe automatic methane-water separator for methane, which comprises a separator casing, a floater arranged in the separator casing, a methane guiding opening arranged on the separator casing and a water guiding opening arranged on the bottom end of the separator casing. The utility model is characterized in that the floater is composed of an upper light part and a lower heavy part, namely a sealed tank body on the upper part and a cylindrical body on the lower part, wherein a conical body is arranged on the bottom end of the cylindrical body and the water guiding opening can be closed by the conical body. The utility model has the characteristic that the cylindrical body is arranged on the lower end of the tank body, so the height of the bottom surface of the tank body on the upper part is effectively increased; thus, the floater floats upward or sinks limberly and conveniently and action is accurate. Water mingled with methane which is automatically discharged by the utility model extends the service lives of methane pipelines.