Exhaust device of organic solvent storage tank

The utility model discloses an organic solvent storage tank exhaust device which comprises a material storage cavity internally provided with a solution, a flange seat and an exhaust cap provided with an exhaust hole, the flange seat is located below the material storage cavity, an inverted-U-shaped gas guide pipe is arranged in the material storage cavity, one end of the gas guide pipe penetrates through the bottom face of the material storage cavity, and the other end of the gas guide pipe is connected with the exhaust cap. A gap is formed between the other end of the air guide pipe and the bottom face of the material storage cavity, an open hole is formed in the top of the material storage cavity, the exhaust cap is located at the top of the material storage cavity, an elastic piece, a guide rod, a guide plate and a first sealing block are arranged in the exhaust cap, the guide plate is internally connected to the middle of the exhaust cap, the guide rod penetrates through the guide plate, and the elastic