Novel simple pollution discharge safety device

A novel simple pollution discharge safety device comprises a main storage box and an exhaust pipe connected to the upper end of the main storage box. The diameter of the exhaust pipe is smaller than that of the main storage box. A blow-off pipe is connected from the upper end of the main storage box, and a drain pipe is connected to the lower end of the main storage box; one end of the inverted-U-shaped pipe is connected with the water drainage pipe, and an observation opening is formed in the inverted-U-shaped pipe. Waste oil and water cannot be generated in a chemical production device; whenthe waste oil water needs to be discharged, a certain amount of poisonous, harmful, combustible and explosive gas cannot be dissolved in the waste oil water, the waste oil water is directly discharged and then passes through a sewer, a sewage pipe and the like to be treated, unsafe factors are brought to production, and the pollution discharge safety device is simple and novel and avoids damage of the gas to a production