Collecting device for detecting pH value of rainwater

The utility model belongs to the technical field of collecting equipment, particularly relates to a collecting device for detecting the pH value of rainwater, and aims to solve the problem that most impurities staying on the surface of a filter screen in an existing rainwater collecting device need to be manually scraped off, so that the labor intensity of workers is high. A collecting box is fixedly installed on one side of the top of the base, a storage frame is fixedly installed on the other side of the top of the base, one side of the top of the collecting box communicates with a water receiving disc, a first rotating disc and a second rotating disc are rotationally installed on the outer side of the collecting box, a first circular shaft is fixedly installed on the front side of the first rotating disc, and a second circular shaft is fixedly installed on the front side of the second rotating disc. The discharging device is reasonable in design, the inclined plate can rotate in a reciprocating mode throug