Valve element of manual air volume adjusting valve

The utility model discloses a manual air volume regulating valve core, which comprises a push rod and a valve clack component, the push rod comprises a transmission part, a guide part and a hinge part which are sequentially arranged from right to left, the transmission part is provided with a rack, the rack is meshed with a rotating rod, and the guide part is provided with a strip-shaped guide hole. The valve clack assembly comprises a first valve clack and a second valve clack which are both semicircular and arranged in an axial symmetry mode, the back face of the first valve clack and the back face of the second valve clack are hinged through a hinge shaft, the length of the hinge shaft is larger than the diameter of the first valve clack and the diameter of the second valve clack, the push rod penetrates through the center of the first valve clack and the center of the second valve clack, and the middle of the hinge shaft is located in a guide hole of the push rod. A sliding assembly is hinged to the hinge