Pollution discharging device for pressure reducing valve

The utility model relates to the technical field of pollution discharge, in particular to a pollution discharge device for a pressure reducing valve, which comprises a tank body, the top end of the tank body is clamped with a first cover body, the bottom end of the first cover body is fixedly connected with a waterproof ring, the middle part of the top end of the first cover body is fixedly connected with a power assembly, and the bottom end of the power assembly is fixedly connected with a connecting column. And a first filtering assembly is clamped at the bottom end of the connecting column. Through the arrangement of the power assembly and the first filtering assembly, water is firstly fed into the tank body through the water inlet pipe during use, then a servo motor in a motor box is started through an external power supply, and a transmission rod drives a first filtering frame below a connecting column to rotate; the first bearing frame drives the scraper to clean and collect impurities intercepted on th