Air tightness detection device for rice flour packaging bag production

The invention discloses an air tightness detection device for rice flour packaging bag production, and relates to the technical field of air tightness detection, the air tightness detection device comprises a bottom plate and a support frame fixed on the bottom plate, the bottom plate is fixedly connected with a discharging plate, the discharging plate is slidably connected with a sliding block, and the sliding block is provided with an extrusion plate; a movable plate is arranged on the supporting frame, and a main pressing plate is arranged at the bottom of the movable plate; the movable plate is in transmission connection with the sliding block so that when the movable plate moves downwards to drive the main pressing plate to press the rice noodle packaging bag, the movable plate drives the squeezing plate to get close to the sealed packaging bag so as to squeeze gas on the inner circumference of the rice noodle packaging bag to the middle. A main pressing plate moves downwards to extrude the upper portion