Novel ventilation valve

The utility model discloses a novel ventilation valve which comprises a ventilation valve body, a rotating shaft is arranged in the ventilation valve body in a rotating mode, an installation cylinder is fixedly arranged on the rotating shaft, fixing assemblies are symmetrically arranged on the two sides of the installation cylinder, valve blades are arranged on the fixing assemblies, and a plurality of reinforcing assemblies are arranged between the fixing assemblies and the valve blades. The valve blade is installed on the installation cylinder through the fixing assembly, when the valve blade needs to be disassembled and cleaned, the valve blade is rotated to partially stretch out of the ventilation valve body, the bolt between the valve blade and the U-shaped base is screwed off, and then the valve blade is pulled out forcibly, so that dust attached to the fixing assembly is conveniently and fully cleaned, disassembly operation is simple, and the ventilation valve is convenient to use. The use is convenien