Safety fireproof valve

The utility model relates to the technical field of safety fire prevention, in particular to a safety fire damper which comprises a body and a filter device, a partition blade is rotatably connected to the inner surface of the body, the cross section of the partition blade is rectangular, the filter device is arranged on the surface of the body and comprises a filter screen, and the filter screen is in contact connection with the inner surface of the body. The cross section of the filter screen is rectangular, the surface of the body is fixedly connected with a limiting ring, the longitudinal section of the limiting ring is annular, the filter screen is connected with the inner surface of the limiting ring in an inserted mode, the surface of the body is fixedly connected with a guide ring, the longitudinal section of the guide ring is annular, the guide ring is located under the limiting ring, and the inner surface of the guide ring is slidably connected with an ejector rod. And the cross section of the eject