Fireproof and waterproof device

The utility model relates to the field of power distribution room construction, and discloses a fireproof and waterproof device which comprises a calcium silicate fireproof plate, a Z-shaped support, a water pump and a liquid level sensor. A top plate is arranged at the top, close to the center, of the calcium silicate fireproof plate through a supporting plate, a water pump is installed at the top, close to the center, of the top plate through bolts, an extension plate is fixed to one end of the top of the top plate through screws, and a sleeve block is arranged on one side of the top of the extension plate; a PLC electric control cabinet is arranged at the end, away from the extension plate, of the top of the top plate through a mounting base, and the PLC electric control cabinet controls the water pump to be turned on after receiving a signal transmitted by the liquid level sensor. The novel cable trench is provided with an active drainage structure, can effectively drain water entering the cable trench, a