The invention discloses a simple spraying automatic fire extinguishing device, and relates to the field of fire fighting equipment, the simple spraying automatic fire extinguishing device comprises a fixed shell, a
fire detection structure is arranged in the fixed shell, a
booster pump is arranged in the fixed shell and is connected with an external
water source, a conveying control valve is connected with a water outlet of the
booster pump, and a water spraying
assembly is connected with the conveying control valve; the
system further comprises a pressure stabilizing structure, the pressure stabilizing structure comprises a pressure stabilizing tank, the pressure stabilizing tank is arranged between an external
water source and the
booster pump, the flexible pressure stabilizing part is arranged in the pressure stabilizing tank and divides the pressure stabilizing tank into a
water storage cavity and a pressure stabilizing cavity, and the
water storage cavity is arranged at the bottom of the pressure stabilizing tank and connected with the external
water source and the booster pump. The pressure stabilizing cavity is formed in the top of the pressure stabilizing tank; the simple spraying automatic fire extinguishing device can realize stable
water pressure in the conveying process of fire-fighting water from an external water source to the water spraying
assembly, so that the water spraying
assembly can form effective fire extinguishing water mist or
water flow, and the fire extinguishing effect is ensured.