Hydrogen peroxide dosing device in chemical cleaning

The invention relates to a chemical cleaning hydrogen peroxide dosing device, which comprises a chemical storage box, a plurality of pressure relief assemblies and a water outlet pipe fitting, the lower end of the chemical storage box is connected with one end of the water outlet pipe fitting, the other end of the water outlet pipe fitting is connected with an external cleaning system, the pipeline shape of the water outlet pipe fitting is curved, and the water outlet pipe fitting is provided with a gas filter at the bending position. When an external dosing pump pumps out hydrogen peroxide in a dosing box and hydrogen peroxide with bubbles passes through a gas filtering part, internal decomposed gas reaches the gas filtering part under the pushing of water flow, gas in the hydrogen peroxide is diffused out of the device through the gas filtering part, and meanwhile, the internal hydrogen peroxide flows out of the gas filtering part under the pumping action of the dosing pump. And the hydrogen peroxide enters