Batch-type air seal machinery

The utility model discloses an intermittent airlock, which comprises a shell, a feeding interface, a discharging interface, fixed faceplates, movable faceplates, motors and an electric cabinet, wherein the upper end of the shell is provided with the feeding interface and the lower end of the shell is provided with the discharging interface; the upper end and the lower end of an inner cavity of the shell are provided with the fixed faceplates; the motors are arranged on the fixed faceplates; the movable faceplates are arranged on motor shafts; the motor shafts on lower parts of the movable faceplates are provided with springs, so as to make the fixed faceplates closely matched with the movable faceplates; the fixed faceplates and the movable faceplates are provided with limit switches respectively and are provided with mutually corresponding through holes respectively; the through holes are alternately communicated with each other and controlled by the electric cabinet; and both ends of the shell are connected