Mask ventilation resistance detector

The utility model discloses a mask ventilation resistance detector and belongs to the technical field of mask ventilation detection devices. A mask ventilation resistance detector comprises an upper hollow column and a lower hollow column, an adjusting plate is fixedly connected to the upper hollow column, a pressing rod is slidably connected into the adjusting plate, a first pressing plate is fixedly connected to the bottom of the pressing rod, a threaded rod is fixedly connected to the top of the pressing rod, a circular ring is in threaded connection to the threaded rod, and the circular ring is attached to the adjusting plate; the pressing rod is sleeved with a first spring, the lower hollow column is fixedly connected with a containing plate, the first pressing plate is attached to the containing plate, a rotating shaft is rotationally connected into the lower hollow column, a gear is fixedly connected to the rotating shaft, a rack is fixedly connected to the upper hollow column,the gear is meshed with t