Membrane module connecting device

The utility model provides a connecting device of a membrane module, which belongs to the technical field of water treatment and comprises a membrane module body, a first water outlet pipeline is arranged at the input end of the membrane module body, a flexible connecting mechanism is arranged on the first water outlet pipeline, and the flexible connecting mechanism comprises a metal corrugated pipe and flange connecting pieces at two ends of the metal corrugated pipe. One end, far away from the metal corrugated pipe, of each flange connecting piece is provided with a connecting pipeline, and one end, close to the membrane module body, of the connecting pipeline is in butt joint with the first water outlet pipeline. The influence of vibration and displacement of the membrane component on the firmness of the connecting position is avoided, so that the probability that air enters the membrane component or water flow leaks due to poor sealing performance is reduced, and the membrane component is easy to mount an