Automatic control device for respiration simulation calibration cylinder

An automatic control device for a breathing simulation calibration cylinder comprises a calibration cylinder connected with a piston push-pull rod, and further comprises a fixing support, a stepping motor, a lead screw, a lead screw sliding rail and a lead screw sliding table, the calibration cylinder is fixed to the fixing support, the lead screw sliding rail is arranged in the moving direction of the piston push-pull rod, and the stepping motor is arranged on the lead screw sliding table. The lead screw is arranged on the lead screw sliding rail and is in driving connection with the stepping motor, the lead screw sliding table is connected to the lead screw and is arranged on the lead screw sliding rail in a sliding mode, the lead screw sliding table is connected with the piston push-pull rod, and front-back push-pull of the piston push-pull rod is achieved through sliding of the lead screw sliding table. According to the device, the stepping motor is adopted to carry out automatic push-pull operation on th