Electronic soap film flowmeter convenient to observe

The utility model relates to the technical field of soap film flowmeters, in particular to an electronic soap film flowmeter convenient to observe. Comprising a detector, a glass tube and a limiting assembly, the glass tube is arranged on the detector, the limiting assembly comprises a driving motor, a disc, two connecting rods, two sliding rails, two sliding blocks, two clamping sleeves and two circular shafts, the detector is provided with a mounting groove, the driving motor is arranged in the mounting groove, and the disc is fixedly connected with the output end of the driving motor; the two circular shafts and the disc are eccentrically arranged respectively, the two sliding rails are symmetrically arranged above the detector, the two sliding blocks are in sliding connection with the corresponding sliding rails respectively, the two ends of each connecting rod are rotationally connected with the corresponding circular shaft and the corresponding sliding block respectively, and the two clamping sleeves ar