Closed foam and water spraying combined automatic fire extinguishing device

The utility model discloses a closed foam and water spraying combined automatic fire extinguishing device. The device comprises a storage box, a proportional mixer and an adjusting box, a foam storagebox and a liquid storage box are arranged in the storage box; one side of the foam storage box is fixedly connected with an adjusting valve; one side of the foam storage box is fixedly connected withthe upper left portion of the proportional mixer through a first fixing pipe. The liquid storage tank is fixedly connected with the left lower part of the proportional mixer through a water pipe; thebottom of the water pipe connected with the proportional mixer is fixedly connected with a valve; valve and return pipe connection, the lower end of the return pipe is inserted into the collecting box; according to the fire extinguishing device, the proportional mixer is arranged, foam and water can be uniformly mixed, the fire extinguishing speed can be increased, the flow speed of mixed liquidcan be adjusted by arranging