Gas extraction monitoring equipment for gas geology dynamic prediction

A gas extraction monitoring device for gas geology dynamic prediction belongs to the technical field of gas control and comprises a collecting cylinder, a top cover, a rubber valve, a gas concentration detector, a driving box, a connecting frame, a piston and a connecting component, the top cover is mounted at the top of the collecting cylinder, and the rubber valve is mounted in the center of the top of the top cover. The gas concentration detectors are mounted on the left and right sides of the collecting cylinder, the driving box is mounted on the front side of the collecting cylinder, the piston is slidably connected into the collecting cylinder, the bottom of the piston is connected with the connecting frame, the connecting frame is connected with the output end of the bottom of the driving box, and the connecting assembly is arranged on the rear side of the collecting cylinder. The driving box is used for controlling the piston to move up and down, gas in the collecting cylinder is extracted and dischar